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GOVERNMENT DOCUMENTS DEPARTMENT
MANHATTAN:
THE ARMY AND THE ATOMIC BOMB
Maj. Gen. Leslie R. Groves, Officer in Gharge, Manhattan Project
UNITED STATES ARMY IN WORLD WAR II
Special Studies
MANHATTAN:
THE ARMY AND THE ATOMIC BOMB
by
Vincent C. Jones
CENTER OF MILITARY HISTORY
UNITED STATES ARMY
WASHINGTON D.C., 1985
U.S. Army Center of Military History
Brig. Gen. Douglas Kinnaid, USA (Ret.), Chief of Military History
Chief Historian David F. Trask
Chief, Histories Division Col. James W. Dunn
Editor in Chief John W. Elsberg
Library of Congress Cataloging in Publication Data
Jones, \'incent C, 1915-
Manhattan, the Army and the atomic bomb.
(United States Army in World War II) (Special
studies / Center of Military History, United States
Army)
Bibliography: p.
Includes index.
1. United States. Army. Corps of Engineers.
Manhattan District — History. 2. Atomic bomb —
United States — History. I. Title. II. Series.
III. Series: Special studies (Center of Military
History)
QC773.3.U5J65 1985 355.8'251 19'0973 84-12407
First Printing— CMH Pub 11-10
For salt- bv the Supcrintc-iulcm of Docunic-nts, l!.S. (.overniiK-nt Priming Offl
Washington, D.C. 20402
. . to Those Who Served
Foreword
The U.S. Army played a key role in the formation and administra-
tion of the Manhattan Project, the World War II organization which
produced the atomic bombs that not only contributed decisively to
ending the war with Japan but also opened the way to a new atomic
age. This volume describes how the wartime Army, already faced with
the enormous responsibility of mobilizing, training, and deploying vast
forces to fight a formidable enemy on far-flung fronts in Europe and
the Pacific, responded to the additional task of organizing and adminis-
tering what was to become the single largest technological project of its
kind undertaken up to that time.
To meet this challenge, the Army — drawing first upon the long-time
experience and considerable resources of its Corps of Engineers —
formed a new engineer organization, the Manhattan District, to take
over from the Office of Scientific Research and Development adminis-
tration of a program earlier established by American and refugee scien-
tists to exploit the military potentialities of atomic energy. Eventually,
however, the rapidly expanding project turned for support and services
to a much broader spectrum of the Army, including the War Depart-
ment, the Ordnance Department, the Signal, Medical, Military Police,
and Women's Army Corps, the Military Intelligence Division of the
War Department General Staff, and the Army Air Forces. These and
other Army elements worked together in close collaboration with
American industry and science to win what was believed to be a des-
perate race with Nazi Germany to be first in producing atomic weap-
ons. For both soldiers and civilians this history of the Army's earlier
experience in dealing successfully with the then novel problems of
atomic science seems likely to offer some instructive parallels for find-
ing appropriate answers to the problems faced in today's ever more
technologically complex world.
DOUGLAS KINNARD
Washington, D.C. Brigadier General, USA (Ret.)
1 March 1984 Chief of Military History
The Author
Vincent C. Jones, after graduating from Park College (Parkville,
Missouri) with a B.A. in history, earned an M.A. degree at the Universi-
ty of Nebraska with a thesis on German public opinion in World War I
and spent a year as a Sanders Fellow in History at George Washington
University. Moving to the University of Wisconsin, he began work on a
doctoral degree in modern European history just before the outbreak
of W^orld War II in Europe. During the war, he was a noncommis-
sioned officer in a heavy weapons company of the 81st Infantry Divi-
sion, participating in the Peleliu-Angaur and Leyte campaigns in the
Pacific Theater. He was in training in the Philippines in August 1945,
preparing for the impending invasion of Kyushu, when the Army Air
Forces dropped atomic bombs on Hiroshima and Nagasaki. Following
the surrender of Japan, he served in the American occupation forces in
that country before returning to the University of Wisconsin as an
instructor in history.
Completing his doctorate at W'isconsin in 1952, Dr. Jones served a
year as a research associate in American history at the State Historical
Society of Wisconsin and as an assistant professor of history at the
Central State College of Connecticut. Since January 1955 he has been a
historian on the staff of the U.S. Army Center of Military History,
where he has been a major contributor to The Army Almanac and the
ROTC textbook American Military History. In addition to the present
volume. Dr. Jones is author of articles and reviews in professional
journals and of biographical sketches of military figures in a number of
encyclopedias.
Preface
During the nearly four decades since the atomic bombings of Hiro-
shima and Nagasaki in August 1945, much has been written about the
developments leading up to that climactic moment in world history.
Within days of that event, the War Department released its official ac-
count, the well-known semitechnical report by Professor Henry D.
Smyth of Princeton University. Soon popular histories also appeared,
and with the gradual opening of the archival records relating to the top
secret World War II program known as the Manhattan Project, scholars
began examining in detail the scientific, technological, strategic, and
diplomatic story of atomic energy and the atomic bomb (see Biblio-
graphical Note). Yet amid this outpouring of books, none has provided
an adequate and full account of the United States Army's participation
in the atomic program from 1939 to the end of 1946. It is the purpose
of this volume to tell that story.
Stated in its simplest terms, the achievement of an atomic bomb re-
sulted from the highly successful collaboration of American science and
industry carried out under the direction and guidance of the U.S.
Army. This triad — scientists, industrialists and engineers, and sol-
diers— was the product of a decision in early 1942 by America's war-
time leaders to give to the Army the task of administering the atomic
program. Convinced that the Allies were in a race with Germany to be
the first to develop an atomic weapon, they decided that only the Army
could provide the administration, liaison services, security, and military
planning essential to the success of a program requiring ready access
to scarce materials and manpower, maximum protection against espio-
nage and sabotage, and, ultimately, combat utilization of its end
product.
In telling how the Army met the challenge of its unique assignment,
eventually achieving results that would have the most profound impli-
cations for the future of mankind, I have taken a broadly chronological
approach but with topical treatment of detailed developments. The
focus of the narrative is from the vantage point of the Manhattan
Project organization, which functioned under the able direction of Maj.
Gen. Leslie R. Groves and such key scientific administrators as Vanne-
var Bush, James B. Conant, Arthur Compton, and J. Robert Oppen-
heimer in compliance with policies established at the highest levels
of the Washington wartime leadership, fhe volume begins with a
prologue, designed to provide the reader with a brief survey of the his-
tory of atomic energy and to explain in layman's terms certain technical
aspects of atomic science essential to an understanding of the major
problems occurring in the development of an atomic weapon. Early
chapters describe the beginning of the Army's atomic mission, includ-
ing the formation of the Manhattan District, the first steps in acquiring
the means to produce atomic weapons, and the appointment of Gener-
al Groves. Subsequent topical chapters trace the building and oper-
ation of the large-scale process plants for the production of fissionable
materials; the administration of a broad range of support activities,
such as security and community management; and the fabrication, test-
ing, and combat employment of atomic bombs. A concluding section
describes how the Army dealt with the difficult problems arising during
its unexpectedly prolonged postwar trusteeship of the project until De-
cember 1946, when the newly created civilian agency — the United
States Atomic Energy Commission — assumed responsibility for atomic
energy matters.
The Army did not program a volume on the Manhattan Project in
its multivolumed historical series, the U.S. Army in World War II, until
1959. Two developments in the late 1950's had made available the es-
sential records for research by Army historians: the instituting of a his-
torical program by the Atomic Energy Commission, with the objective
of preparing an unclassified account of its own origins; and the open-
ing of access to the Manhattan District records, the so-called General
Groves collection, then located in the Departmental Records Branch of
the Adjutant General's Office but subsequently retired to the National
Archives and Records System.
A great many individuals are deserving of mention for their assist-
ance and support in the preparation of this volume. For aiding me in
my task of researching the voluminous and widely scattered records
controlled by the Department of Energy, I wish to thank Mr. Roger
Anders, Dr. Richard G. Hewlett, and Mr. Thomas J. Pugliese in Ger-
mantown, Maryland; Mr. Floyd F. Beets, Jr., Mr. William J. Hatmaker,
Mr. Frank Hoffman, and Mr. James R. Langley in Oak Ridge, Tennes-
see; Mr. Ralph V. Button and Mr. Milton R. Cydell in Richland, Wash-
ington; Mr. King Derr, Mr. David A. Heimbach, Mrs. Lucille McAn-
drew, and Mr. Robert Y. Porton in Los Alamos, New Mexico;
Mrs. Eleanor Davisson in Berkeley, California; and Mr. E. Newman
Pettit in Lemont, Illinois. For facilitating my use of the Manhattan
Project records at the National Archives, I wish to thank Mr. Sherrod
East, Dr. Lee Johnson, Dr. Herman Kahn, Mr. Wilbert B. Mahoney, Mr.
Wilbur J. Nigh, Dr. Benjamin Zobrist, and, especially, Mr. Edward
Reese, who on countless occasions rendered expert assistance in using
the indispensable General Groves collection. And for making available
interviews and photographs which they assembled for use in their own
excellent account of the construction aspects of the Manhattan Project,
I wish to thank Miss Lenore Fine and Dr. Jesse F. Remington, formerly
of the Historical Division, Corp of Engineers.
Adding another dimension to my understanding of the atomic
project were my visits to several Manhattan research, production, and
community sites, arranged by Mr. Tom Cox and Mr. William McCluen
at Oak Ridge, Mr. R. M. Plum and Mr. James W. Travis at Richland,
Mr. Charles C. Campbell at Los Alamos, and Mr. P. M. Goodbread at
Berkeley.
Many others gave generously of their time in reading and critiquing
all or parts of the manuscript: Dr. James B. Conant, Col. William A.
Consodine, Lt. Col. John A. Derry, Mr. Julian D. Ellett, Mr. Joseph R.
Friedman, Dr. Crawford H. Greenewalt, Lt. Gen. Leslie R. Groves, Dr.
Walter G. Hermes, Col. John E. Jessup, Jr., Dr. Richard G. Hewlett,
Col. John Lansdale, Jr., Dr. Maurice Matloff, Col. Franklin T. Matthias,
Maj. Gen. Kenneth D. Nichols, Mrs. Jean O'Leary, Mr. Robert R.
Smith, Maj. Harry S. Traynor, and Col. Gerald R. Tyler. To each of
them, I extend a special note of thanks.
At each stage in the preparation of this volume, I also benefited
from the unique combination of talents available among my colleagues
in the Army's historical office. Fellow staff historians — Dr. Stanley F.
Falk, Dr. Maurice Matloff, and Dr. Earl F. Ziemke — helped expedite ini-
tial research into the atomic project records, serving with me as mem-
bers of a team under the direction of Dr. Stetson Conn, the chief histo-
rian; in addition. Dr. Falk conducted a number of interviews and wrote
the first draft of the Prologue, Chapters I-IV, and Chapter X. Miss
Carol Anderson, in the library, and Miss Hannah Zeidlik, in the records
branch, cheerfully and expertly dealt with my many requests and kept
me abreast of newly available records and publications on atomic
energy. Mr. Arthur S. Hardyman designed the graphically handsome
maps, some of them in color, and oversaw the layout of the photo-
graphs. His colleague, Mr. Roger D. Clinton, provided the clearly
drawn charts, which will help the reader understand the complex orga-
nization of the Manhattan Project, and assisted in the selection of pho-
tographs. The skillful typing of Mrs. Joyce Dean, Mrs. Margaret L
Fletcher, Mrs. Edna Salsbury, and Miss Lajuan R. Watson, the eagle-
eyed proofreading of Mrs. Rae T. Panella, and the meticulous indexing
of Mrs. Muriel Southwick contributed to the efficient preparation of my
technically difficult and heavily documented manuscript. Lt. Col. John
R. Pipkin shepherded the draft manuscript through clearance by several
government agencies in record time, considering the potential sensi-
tiveness of its subject matter. Finally, Miss Joanne M. Brignolo edited
the volume. She demonstrated a remarkable capacity for quickly grasp-
ing the intricacies of atomic science, enabling her to make read-
able my oftentimes obscure text and to give order and consistency to
its complex documentation. I am obliged to her for whatever literary
merit my book may have.
For her understanding and unremitting support during the many
years this volume was in preparation, I wish to thank my wife, Kay Cox
Jones, who, as an employee at the Argonne National Laboratory in Chi-
cago in the immediate post-World War II period, first brought my at-
tention to the history of the atomic bomb.
For the many others not here mentioned who, over the years this
volume has been in the making, have contributed in some way to its
ultimate completion, I express my gratitude. The author alone, of
course, takes responsibility for the facts presented and the conclusions
reached in this volume.
Washington, D.C. VINCENT C. JONES
1 March 1984
Contents
Page
PROLOGUE: A HISTORY OF ATOMIC ENERGY TO 1939 3
I 'ranium and Fission 8
Efforts To Enlist Support of the U.S. Government 12
Part One: Beginnings of the Atomic Mission
Ctjapter
I. THE ARMY AND THE ATOMIC ENERGY PROGRAM,
1939-1942 19
Origins of the Army's Role 19
Decision To Develop Atomic Weapons 21
Establishment of the NDRC and OSRD 26
New Advances in Atomic Research, 1940-1941 28
Top Policy Group: Preparing for Army Take Over 30
Progress in Research and Development: The Xuclear Steeplechase 35
II. ESTABI T^HING THE MANHATTAN DISTRICT 40
Organizing the District 41
Army-OSRD Planning Meeting 25 June 1942 .-. 46
Progress in Research and Development 50
III. FIRST STEPS FOR WEAPON DEVELOPMENT 55
Securing an Architect-Engineer-Manager 55
Obtaining Funds 56
Securing a Priority Rating 57
Procuring Essential Materials 61
Site Selection 67
Reaching Decisions: The Meeting at Bohemian Grove 70
IV. GENERAL GROVES TAKES COMMAND 73
Reorganization and the Selection of Groves 73
First Measures 78
Establishment of Los Alamos 82
Manhattan Project Organization and Operation 88
Chapter Page
Part Two: Producing Fissionable Materials
V. ORGANIZING FOR PRODUCTION 95
Plutonium Project 95
Reassessment of Processes To Produce a Bomb 101
Contract Xegotiations 105
Hanford Engineer Works 108
Plutonium Semiworks: Argonne vs. Tennessee Ill
Program Funding 1 15
VI. THE ELECTROMAGNETIC PROCESS 117
Electromagnetic Research and the Army, 1 942- 1943 118
Research and Development, 1943-1945: Radiation Laboratory 120
Design and Engineering, 1943-1945 126
Building the Electromagnetic Plant 130
Plant Operation 140
MI. THE GASEOUS DIFFUSION PROCESS 149
Gaseous Diffusion Research and the A rmy, 1942-1943 149
Design and Engineering 150
Building the Gaseous Diffusion Plant 159
Plant Operation 165
\ III. THE LIQUID THERMAL DIFFUSION PROCESS 172
Research and Development: The Role of the Xavy 172
Reassessment: Decision for Full-scale Development 174
Plant Design, Engineering, and Construction 178
Plant Operation 180
IX. THE PILE PROCESS 184
Research and Development: Metallurgical Laboratory 185
Organization for Plutonium Production 198
The Semiworks: Clinton Laboratories 204
The Hanford Production Plant 210
Part Three: Support Activities
X. ANGLO-AMERICAN COLLABORATION 227
Breakdown of Interchange 227
The Quebec Agreement 232
Implementing the Agreement 242
Xe-w Partnership Strains: Repatriation of French Scientists 248
Chapter Page
XI. SECURITY 253
Early Aspects 253
The District's Security System 254
Counterintelligence Activities 259
Safeguarding Military Information 268
XII. FOREIGN INTELLIGENCE OPERATIONS 280
Organization of the ALSOS Mission 280
ALSOS Operations in Italy 281
Manhattan 's Special Intelligence Activities, 1944 282
ALSOS Operations m Western Europe, 1944-1945 285
XIII. THE RAW MATERIALS PROGRAM 292
Geographic Search and Field Exploration 292
Ore Control Agency: Combined Development Trust 295
Ore Acquisition in Foreign Areas 299
XIV. THE FEED MATERIALS PROGRAM 307
Program Organization and Support Activities 307
Feed Materials Procurement 310
Feed Materials Production 314
Quality Control Program 317
XV. LAND ACQLHSITION 319
Clinton Engineer IVorks 319
Los Alamos 328
Hanford Engineer IVorks 331
Other Sites 342
XVI. MANPOWER PROCUREMENT 344
Personnel Organization 345
Scientific and Technical Personnel 348
Industrial Labor 350
Civilian and Military Personnel 355
XVII. MANPOWER CONSERVATION 363
Labor Turnover: The Problem and Its Cure 363
Special Problems With the Selective Service System 366
Labor Relations: Union Activities and Work Stoppages 369
XVIII. ELECTRIC POWER 377
Power Requirements and Sources 377
Implementation of the Power Program 386
Distribution: Clinton Engineer Works 388
Distribution: Hanford Engineer IVorks 39 1
Chapter Page
XIX. COMMUNICATIONS AND TRANSPOR lATION 394
Communications 394
Transportation 397
XX. HEALTH AND SAFETY 410
The Health Program 41 1
The Safety Program 426
XXI. THE ATOMIC COMMUNITIES IN TENNESSEE 432
Oak Ridge: The Operating Community 432
The Construction Camps 440
Community Management 443
XXII. THE ATOMIC COMMUNITIES IN WASHINGTON SI A IE... 450
Selecting Sites 450
Hanford: The Construction Camp 452
Richland: The Operating Community 456
Community Management 460
XXIII. THE ATOMIC COMMUNITIES IN NEW MEXICO 465
Los Alamos: The Operating Community 465
Trinity: The Base Camp 478
Part Four: The Bomb
XXIV. THE LOS ALAMOS WEAPON PROGRAM 485
Planning Phase 485
Laboratoiy Administration 491
Post Administration 496
XXV. WEAPON DEVELOPMENT AND TESTING 503
Building the Bomb 503
Project Trinity: The Test of the Bomb 511
XXVI. THE ATOMIC BOMBING OF JAPAN 519
Preparations for an Atomic Bombing Mission 519
The Decision To i-se the Bomb 530
Dropping the. Bomb 534
The Surrender of Japan 541
Survey of the Bombing Effects 543
Chnfjtey Page
Part Five: Completing the Atomic Mission
XX\ II. THE ATOMIC AGE AND ITS PROBLEMS 553
The Atomic Story: Informing the Public 553
Atomic Energy: Planning for Postwar Control 562
XX\ III. IHE ARMY AND IHE A lOMIC ENERGY PROGRAM,
1945-1947 579
A Postwar Trusteeship 579
The Final Act: Transfer' to Civilian Control 596
EPILOGUE: AN ATOMIC LEGACY 602
APPENDIX— EINSTEIN'S LETTER 609
BIBLIOGRAPHICAL NOTE 611
GUIDE TO ARCHIVAL COLLECTIONS 627
LIST OF ABBREVIATIONS 631
INDEX 643
Tables
Xo.
1. Stone and Webster Engineering and Design Personnel 127
2. Land Acquisition at CEW, 1942-1944 321
3. Comparative Estimates of Atomic Bombing Casualties
in World War II 547
Charts
1. Organization of the Manhattan Project, April 1943 88
2. Organization of the Manhattan District, August 1943 90
3. Organization of the Manhattan District, January 1945 166
4. Feed Materials Network, January 1945 309
5. Estimated Officer Personnel Requirements for the
Manhattan District, January 1943 356
Maps
1. Projected Site for Atomic Production Plants, Tennessee, 1942 48
2. Manhattan Project, 1942-1946 63
3. Clinton Engineer Works, Tennessee, 1943-1945 131
4. Hanford Engineer Works, Washington, 1943-1945 213
No. Page
5. Los Alamos Site, New Mexico, 1943-1945 330
6. Trinity Test Site, 1945 479
7. The Atomic Bombing of Japan, August 1945 525
Illustrations
Maj. Gen. Leslie R. Groves Frontispiece
Ernest O. Lawrence, Arthur H. Compton, Vannevar Bush,
and James B. Conant 29
Secretary of War Henry L. Stimson 32
Brig. Gen. Wilhelm D. Styer 41
Brig. Gen. James C. Marshall 42
Col. Kenneth D. Nichols 43
Silver-wound Magnet Coils for the Electromagnetic Process 68
Approach Road to the Los Alamos Ranch School for Boys 85
Manhattan Project Emblem 89
Mrs. Jean O'Leary and General Groves 90
Col. E. H. Marsden 113
Excavation at the Tennessee Site 135
Alpha I Racetrack, Electromagnetic Plant, CEW 137
Electromagnetic Plant Under Construction 140
CEW Training Facilities 143
Electromagnetic Plant in Full Operation 147
Gaseous Diffusion Plant Under Construction, CEW 162
K-25 Steel-frame Construction 163
Completed Plant Section 168
Completed Gaseous Diffusion Plant 170
Richard C. Tolman 177
Liquid Thermal Diffusion Plant, CEW 181
Billboard at the S-50 Plant Site 182
University of Chicago Physics Building 186
Argonne Laboratory Near Chicago 187
124th Field Artillery Armory in Chicago 188
New Chemistry Building, Metallurgical Laboratory, Chicago 189
Heavy Water Plant at the Wabash River Ordnance Works 192
Maj. Arthur V. Peterson 195
Clinton Laboratories Pilot Pile, CEW 207
Clinton Laboratories 211
300 Area, HEW 215
100 B Pile Area, HEW 216
Chemical Separation Plant Under Construction, HEW 219
Completed Chemical Separation Plants 220
Sir James Chadwick, General Groves, and Richard Tolman 244
Changing of the Guard, CEW 259
Security Sign at the Tennessee Site 269
Farm at the Tennessee Site 322
Typical Terrain of the Los Alamos Site 329
Military and Civilian Workers, CEW 355
Women's Army Corps Detachment, CEW 359
Enlisted Men at CEW During Off-Duty Hours 360
Large Troop Contingent at Los Alamos on Parade 361
Power Plant, HEW 379
K-25 Power Plant, CEW 384
Unimproved Santa Fe-Los Alamos Road 399
Improved Santa Fe-Los Alamos Road 400
Oak Ridge Bus Terminal 402
Gallaher Bridge Road at the Tennessee Site 405
Col. Stafford L. Warren 414
Hazardous Materials Storage Area, Los Alamos 421
Oak Ridge Hospital 423
Oak Ridge Shopping Mall and District Headquarters 437
Black Workers, CEW 438
Prefabricated Houses and Apartment Dwellings, CEW 440
Enlisted Men's Barracks, CEW 441
Gamble Valley Trailer Camp, CEW 442
Oak Ridge Elementary School 444
Main Post Office and Theater in Oak Ridge 445
CEW Reservation Entry Point 447
Chapel-on-the-Hill in Oak Ridge 448
Hanford Construction Camp, HEW 452
Camp Administrative and Residential Areas, HEW 453
Richland Village, HEW 456
Typical Building at the Los Alamos Ranch School 467
Family Apartment Units at Los Alamos 470
Military Mess Facility at Los Alamos 471
Los Alamos Ranch Trading Post 472
Street Scene in Los Alamos 473
Pupils at the Los Alamos Community School 474
Trinity Base Camp 480
J. Robert Oppenheimer 486
Lt. Col. Curtis A. Nelson 501
Technical Area at Los Alamos 505
Brig. Gen. Thomas A. Farrell and General Groves 512
Trinity Control Dugout and Observation Post 515
The Atomic Explosion at Trinity, 16July 1945 516
Little Boy 522
Fat Man. 523
Col. Elmer E. Kirkpatrick, Jr 527
General Groves Checking Location of Bombing Targets 531
Page
Col. Paul W. Tibbets, Jr., and Ground Crew at Tinian 535
Enola Gay at Tinian 537
Mushroom Cloud Over Hiroshima 539
Physical Damage at Hiroshima 546
Atomic Bombing Casualties at Nagasaki 548
Survivors of the Nagasaki Bombing 549
General Groves Holding a Press Conference 557
Henry D. Smyth and Richard Tolman 559
Oppenheimer Congratulating the Troops 582
Secretary of War Robert P. Patterson and General Groves 585
Transfer of Control to the Atomic Energy Commission 600
Illustrations courtesy of the following sources: p. 89 from Typogra-
phy and Design Division, Government Printing Office; pp. 361, 474, and
582 from Col. Gerald T. Tyler; and p. 600 from Wide World Photos. All
other illustrations are from the files of the Department of Defense and
the Department of Energy.
MANHATTAN:
THE ARMY AND THE ATOMIC BOMB
PROLOGUE
A History of Atomic Energy
to 1939
The concept of the atomic structure
of matter first emerged in the fifth
century B.C. with the Greek theory of
minute particles, or atoms, as the un-
changeable and indivisible units com-
prising all material things.^ This new
idea, however, lay dormant for nearly
two thousand years because Aris-
totle's view that all matter is continu-
ous and composed of four elements —
fire, earth, air, and water — prevailed
in the minds of men. Following the
Renaissance in Europe such philoso-
phers and scientists as Galileo, Des-
cartes, Bacon, Boyle, and Newton
supported the early concept, and in
the nineteenth century chemists
(somewhat later, physicists) trans-
formed this atomic theory into a ma-
terial reality.
One of the first and important
steps was the theory proposed by
English chemist John Dalton in 1803
that each element is composed of like
' A simple but excellent explanation of the atomic
concept, including a good historical summary, is
Selig Hechl, Explaining the Atom, 2d ed. (New York:
Viking Press, 1954). The already classic, semitechni-
cal history is H. D. Smyth, A General Account of the De-
velopment of Methods of Using Atomic Energy for Military
Purposes Under the Auspices of the United States Goi'em-
ment, 1940-194'y (Washington, D.C.: Government
Printing Office, 1945), hereafter cited as Smyth
Report. See Bibliographical Note.
atoms, distinguishable from the atoms
forming other elements primarily by
differences in mass. He thus provided
a practical and specific standard for
nineteenth century scientists' descrip-
tions of ninety-two chemical elements
(substances that cannot be broken
down or transformed by chemical
means). By the end of the century, all
known elements had been arranged in
a table, with similar properties in re-
lated positions, in numerical order ac-
cording to atomic mass; it ranged
from element 1, hydrogen, which was
the lightest, to element 92, uranium,
the heaviest. This "periodic table"
not only enabled scientists to predict
the properties of undiscovered ele-
ments but also became the basis of
chemical and physical knowledge of
the elements.
Beginning in the last decade of the
nineteenth century, scientific discov-
eries by those European and Ameri-
can physicists who sought to explain
the phenomenon of radioactivity
opened the way for the modern de-
velopment of atomic energy. This
phenomenon is a property possessed
by some elements to spontaneously
emit radiation that ionizes gas and
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
makes it capable of conducting elec-
tricity. Investigating electrical dis-
charges in gases in 1895, German
physicist Wilhelm Roentgen observed
radiation emissions that penetrated
opaque objects and also produced flu-
orescence. Roentgen's discovery of
these radiations, which he called
X-rays, led French physicist Henri
Becquerel to test fluorescent salts of
uranium to see if they also would
produce penetrating rays. In 1896,
Becquerel demonstrated that uranium
emits penetrating radiations that
would ionize gas, proof that it was
radioactive.
In England, physicist J. J. Thomson
and a young student from New Zea-
land, Ernest Rutherford, used X-rays
to ionize gases, providing further evi-
dence that the penetrating rays were
charged particles much smaller than
atoms. In 1897, Thomson published
data proving the existence of these
particles, each having a mass of about
one two-thousandth of a hydrogen
atom. The following year he suggest-
ed that these particles, subsequently
designated electrons, formed one of
the basic building blocks comprising
all atoms.
Rutherford's succeeding investiga-
tions showed that the penetrating
streams of emitted particles are com-
posed of at least three different kinds
of rays — alpha, beta, and gamma.
Alpha ray particles are heavy, high-
speed, positively charged bodies, later
shown to be nuclei of helium atoms;
beta ray particles are electrons; and
gamma rays are similar in composi-
tion to X-rays. In 1911, Rutherford
proposed the theory of the nuclear
atom, with its mass and positive
charge at the center. The work of
Rutherford, Niels Bohr, a Danish
physicist, and others led to the con-
cept of the atom as a miniature solar
system, with a heavy positive nucleus
orbited by much lighter electrons.
Rutherford finally achieved, in
1919, what man had been attempting
unsuccessfully for centuries: the artifi-
cial transmutation of an element.
Since the discovery of natural radi-
ation, scientists had known that disin-
tegration of radioactive elements in
nature caused them to change sponta-
neously into other elements. Bom-
barding nonradioactive nitrogen with
high-energy alpha particles given off
by naturally radioactive radium, Ruth-
erford caused the nitrogen to disinte-
grate and change into what subse-
quently proved to be a form of
oxygen. His achievement, although
somewhat removed from the ancient
alchemist's dream of transmuting
base metals into gold, was far more
valuable and important. It was not
only the first artificially induced trans-
mutation; it was also the first con-
trolled artificial disintegration of an
atomic nucleus.
A further Rutherford achievement
was isolation and identification of yet
another basic building block of
atomic structure. In addition to
oxygen, nitrogen transmutation had
produced a high-energy particle with
characteristics similar to the positively
charged nucleus of the hydrogen
atom. Later study showed it was a hy-
drogen nucleus, and scientists gave it
the name proton. Such a positively
charged particle as a fundamental
unit in the structure of all atoms had
long been hypothesized; demonstra-
tion of its presence in nitrogen and
other elements confirmed its identity.
A HISTORY OF ATOMIC ENERGY TO 1939
Discovery of the proton pointed
toward the existence of a third parti-
cle. In 1932, James Chadwick, Ruther-
ford's co-worker at Cambridge Uni-
versity, discovered this third particle,
the neutron, an uncharged body ap-
proximately equal in weight to the
proton.
Now the atom was viewed as com-
posed of a positively charged nucleus,
containing protons and neutrons, or-
bited by negative electrons equal in
number to the protons. The number
of protons determined the atomic
number, or numerical position, of the
parent element in the periodic table.
Thus hydrogen, element I, has but a
single proton; helium, element 2, two
protons; and uranium, element 92,
ninety-two protons. For each proton
there is a balancing electron. The
mass, or atomic weight, of an element
is the sum of its protons and neu-
trons; the electrons, with negligible
weight, do not materially affect the
mass of the atom. The weight of each
element is stated in relation to that of
hydrogen, the lightest. Hydrogen,
with a single proton and no neutrons,
has an atomic weight of 1; helium,
with 2 protons and 2 neutrons of
equal weight, a mass of 4; and urani-
um, with 92 protons and 146 neu-
trons, a mass of 238. The chemical
symbols for these elements are writ-
ten iH\ zHe^ and 92U238.
Thus far, three characteristics of
elements had been identified: chemi-
cal uniqueness, atomic number, and
atomic weight. But scientists also dis-
covered that many elements exist in
more than one form, differing solely
in the number of neutrons that each
contains. For example, there are two
forms of helium, each with two pro-
tons and two electrons. Thev are
chemically identical but one form has
a single neutron, thus an atomic mass
of 3, and the other, more prevalent
form two neutrons, thus an atomic
mass of 4. These substances are
called isotopes (from the Greek words
ISO, meaning alike or same, and topos,
meaning place) because they occupy
the same place in the periodic table.
The chemical symbols for the helium
isotopes are written 2He^ and 2He\ or
simply He-3 and He-4; or they may
be spelled out, helium 3 and helium
4. Many other isotopes exist, either
naturally or through scientific trans-
mutations, and they are important in
the story of atomic energy.
James Chadwick's discovery of the
neutron was not the only significant
development in 1932. That same year
British scientist J. D. Cockcroft and
Irish scientist E. T. S. Walton, work-
ing together at Cambridge Universi-
ty's Cavendish Laboratory, used a
particle accelerator to bombard lithi-
um with a stream of protons, causing
the element to disintegrate. Unlike
Rutherford, who experimented with
alpha particles from natural sources,
Cockcroft and Walton, in effect, pro-
duced their own protons through arti-
ficial means.
This artificially induced nuclear dis-
integration, however, was only one
aspect of Cockcroft and Walton's ac-
complishment. As a hydrogen nucle-
us, or proton, struck a lithium nucle-
us, the latter body disintegrated into
two alpha particles of helium nuclei.
The hydrogen atom with a mass of I
united with a lithium nucleus having a
mass of 7, thereby making a total
mass of 8, and then this body imme-
diately divided into two helium
nuclei, each with a mass of 4. Thus,
MANHAIT^AN: THE ARMY AND THE ATOMIC BOMB
the two scientists were also the first
to bring about atomic fission — or, in
the popular phrase, to split the atom.^
Still another result of the Cock-
croft-Walton experiment, and at the
time considered most important, was
its confirmation of Einstein's theory
of relativity, proposed in 1905, that
matter and energy are merely differ-
ent forms of the same thing. The
atomic weights of the lithium, hydro-
gen, and helium nuclei expressed by
Cockcroft and Walton in their experi-
ment were only approximate. The
combined mass of a lithium nucleus
and a hydrogen nucleus is, in fact,
very slightly more than the combined
mass of two helium nuclei. Thus, the
formation of two helium nuclei had
resulted in a loss of mass. This lost
mass was converted into energy in an
amount that could be calculated by
the Einstein equivalence formula
E = mc^ (energy is equal to mass multi-
plied by the square of the velocity of
light) or derived from the speed of
the helium nuclei as they flew apart
from the lithium. Because the two cal-
culations provided answers in very
close agreement, they confirmed Ein-
stein's theoretical projection and
opened the prospect of using atomic
fission as a major new source of
energy.
In the experiments conducted so
far, however, the total energy re-
quired to bombard the atomic nucle-
us and produce fission was much
greater than the energy released. This
initially high input of energy enabled
the charged particle to approach and
penetrate the atom, overcoming the
^Sir John Cockcroft, "The Development and
Future of Nuclear Energy," Bulletin of the Atomic Sa-
entuts 6 (Nov 50): 326.
repulsion of their mutual electrical
charges. Furthermore, even when
high-speed particles were used, only
one in a million succeeded in hitting
its target. This inefficiency led Ruth-
erford to describe using nuclear fis-
sion as an energy source as practical
as "moonshine," ^ and so it indeed
appeared to many.
But Chadwick's discovery of the
neutron provided the solution. The
neutron, because it was an uncharged
particle, would not be repelled and
therefore could penetrate a nucleus
even at relatively slow speeds. Proof
was to come from Italy, where in
1934 Enrico Fermi and his co-workers
set about systematically bombarding
the atoms of all known elements with
neutrons. They soon demonstrated
that the nuclei of several dozen ele-
ments could be penetrated by neu-
trons and thereby broken down and
transmuted into nuclei of other ele-
ments. Their best results were ob-
tained when the bombarding neu-
trons were first slowed down by pass-
ing them through such moderators as
carbon or hydrogen.
The most important result of
Fermi's work was not fully under-
stood for another four years. Among
the substances he had bombarded
with slow neutrons was uranium,
which was naturally radioactive and
the heaviest of all known elements.
Theory and chemical analysis seemed
to indicate that the substance pro-
duced by uranium transmutation was
nothing hitherto known, but was in
fact a new and heavier element. Ura-
nium is element 92; this new element
appeared to be element 93, or possi-
Ibid.
A HISTORY OF ATOMIC ENERGY TO 1939
bly even element 94. Fermi, so it
seemed, had created transuranic ele-
ments not present in nature, and the
popular press hailed his achievement
as a major advance in science.^
Yet many scientists were skeptical,
and Fermi himself was uncertain. The
properties exhibited by the new sub-
stances were not those they had ex-
pected to find in transuranic ele-
ments. For the next four years, physi-
cists and chemists were hard at work
attempting to identify exactly what
Fermi had produced. Progress was
slow, exacerbated by the uncertainty
of the times; fearing the advancing
wave of political oppression, many
scientists in Germany, Austria, and
Italy fled to havens elsewhere in
Europe and in the United States. Nev-
ertheless, out of Nazi Germany, the
answer finally came. Just before
Christmas of 1938, the radiochemists
Otto Hahn and Fritz Strassmann con-
cluded that one of the products of
Fermi's experiment was not a trans-
uranic element at all. It was, rather,
the element barium, with an atomic
weight approximately half that of
uranium.^
When Hahn informed his former
co-worker, Lise Meitner, of the con-
" Laura Fermi, Atoms in the Family: My Life With
Ennco Fermi (Chicago: University of Chicago Press,
1954), Ch. 6 and passim; Enrico Fermi, United States.
1939-1954, The Collected Papers of Enrico Fermi,
ed. Emilio Segre et al.. Vol. 2 (Chicago: University
of Chicago Press, 1965).
^See Charles Weiner, "A New Site for the Semi-
nar: The Refugees and American Physics in the
Thirties," in The Intellectual Migration: Europe and
America, 1930-1960, Perspectives in American Histo-
ry, Vol. 2 (Cambridge, Mass.: Charles Warren
Center for Studies in American History, Harvard
University, 1968), pp. 190-234; Norman Bentwich,
The Rescue and Achieiiement of Displaced Scholars and Sci-
entists, 1933-1952 (The Hague: Martinus NijhofF,
1953).
elusions that he and Strassmann had
reached, the Austrian physicist — who
had recently escaped from Germany
to Sweden — quickly comprehended
the significance of the findings. Work-
ing with her nephew, British (Austri-
an-born) physicist Otto Frisch, she
concluded that the bombardment of
uranium by slow neutrons produced
two elements of roughly half the
weight of uranium. In the splitting
process there was a tremendous re-
lease of energy, far more than neces-
sary to cause fission. Without delay
she passed this exciting information
on to Niels Bohr, who was about to
leave Denmark for an extended stay
at the Institute for Advanced Study at
Princeton University. Thus, even as
Hahn and Strassmann published the
results of their work in Europe, Bohr
carried news of their conclusions to
the United States.^
Further experiments confirmed the
discovery of atomic fission and raised
the possibility that a practical means
of obtaining atomic energy could at
last be realized. Splitting the uranium
atom released not only energy but
also two or three additional neutrons.
Perhaps, under the right conditions,
these neutrons might smash other
atoms, releasing more neutrons to
bombard more atoms while simulta-
neously generating a continuous
emission of energy. This process, or
chain reaction, would be self-sustain-
ing and would continue for as long as
uranium atoms were present to be
split.
^ Lise Meitner, "Looking Back," Bulletin of the
Atomic Scientists 20 (Nov 64): 2-7; S. Rozental, ed.,
Xieh Bohr: His Life and Work as Seen by Friends and Col-
leagues (Amsterdam: North-Holland Publishing Co.,
1967).
8
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
During 1939, scientists in America,
England, France, Germany, the Soviet
Union, Japan, and other countries
worked intensively to extend both the
theoretical and experimental knowl-
edge of atomic fission. By the end of
the year, nearly one hundred papers
on the subject had been published.^
In the United States, native Ameri-
cans and a group of European refu-
gees combined their energies and sci-
entific talents to investigate various
aspects of the complex problem, car-
rying on their work at such institu-
tions as Columbia, Johns Hopkins,
Princeton, the University of California
at Berkeley, and the Carnegie Institu-
tion in Washington, D.C.®
Uranium and Fission
Uranium is considered a rare ele-
ment, although it is a thousand times
more prevalent than gold. Uranium is
more widely dispersed and occurs in-
frequently in a relatively concentrated
form. Found always with radium, pri-
marily as uranium oxide, it occurs
mainly in pitchblende and in carnotite
ores. Before World War II the main
value of these ores lay in their radium
^ Summarized in Louis A. Turner, "Nuclear Phys-
ics," Rnnews of Modem Physics 12 (Jan 40): 1-29.
^ Among the many scientists at work in the
United States on fission research were Herbert L.
Anderson, John R. Dunning, Enrico Fermi, George
B. Pegram, Leo Szilard, and Walter Zinn at Colum-
bia, Edwin M. McMillan at the University of Califor-
nia, Berkeley; Edward Teller at George Washington
University; and John A. Wheeler and Eugene
Wigner at Princeton. In France were Frederic Joliot-
Curie, Hans von Halban, and Lew Kowarski; in Eng-
land, George P. Thomson, James Chadwick, Ru-
dolph Peierls, and others; and in Germany, Otto
Hahn, Fritz Strassmann, and Werner Heisenberg.
The Soviet Union, too, had a number of able and
active physicists in fission research. See Arnold Kra-
mish. Atomic Energy in the Soviet I'nion (Stanford:
Stanford University Press, 1959). Chs. 1-3.
content, although uranium was also
used for coloring glassware and ce-
ramics, for tinting photographic film,
and for making certain steel alloys.
Uranium was rarely produced as a
metal; metallurgists had not yet meas-
ured its melting point accurately.
Substantial radium-uranium con-
centrations in the Shinkolobwe mine
in Katanga Province of the Belgian
Congo were owned by the Union
Miniere du Haut Katanga, a Belgian
firm that completely dominated the
world market. So rich were the Shin-
kolobwe concentrations that in 1937
the company, having stockpiled suffi-
cient ore to satisfy the anticipated
world demand for radium and urani-
um for the next thirty years, ceased
mining operations.
Important but less productive de-
posits were located in the Eldorado
mine at Great Bear Lake in northern
Canada, and ores of much lower
grade were found in the Colorado
Plateau region in the western United
States; however, Colorado Plateau
radium and uranium producers were
forced to close down because they
could not compete commercially with
those in the Congo and Canada. In
addition, other uranium deposits of
varying quality were located in
Czechoslovakia, Portugal, England,
Madagascar, and elsewhere.^
Natural uranium is composed of
three isotopes: U-238, about 99.28
percent; U-235, about 0.71 percent;
^ "The Distribution of Uranium in Nature," Bulle-
tin of the Atomic Scientists 1 (Feb 46): 6; Ms, Office of
the Historian, Armed Forces Special Weapons
Project, "Manhattan District History" (hereafter
cited as MDH), ed. Gavin Hadden, 8 bks., 36 vols.
(Dec 48), Bk. 7, Vol. 1, "Feed Materials and Special
Procurement," pp. 1.1-1.7, 2.1-2.2, 3.1-3.2. 4.1-
4.2, DASA,
A HISTORY OF ATOMIC ENERGY TO 1939
and U-234, just a trace. Experiment-
ing with the isotopic properties of
uranium, scientists eventually proved
that U-235 was fissionable by both
slow and fast neutrons, although
more controUably so by the former.
When U-235 fissions, it emits fast
neutrons, which are captured by the
U-238. The U-238 does not fission
but becomes radioactive and disinte-
grates. For a chain reaction to be self-
sustaining, at least one neutron emit-
ted by the U-235 has to penetrate
another U-235 atom. Because the fast
neutrons are most easily absorbed
bv the U-238, the 140-to-l ratio of
lT-238 to U-235 in natural uranium
makes it even more improbable that
the neutrons can escape the U-238
and be captured by U-235 atoms.
Many neutrons, moreover, escape al-
together from the uranium and others
are absorbed by impurities within it.
This is why uranium does not fission
in its natural state and why an emis-
sion of neutrons does not occur in
any ordinary lump of uranium.
Proper conditions for achieving a
chain reaction required that the
number of neutrons absorbed by im-
purities in uranium and the number
of neutrons lost through its surface or
captured by its U-238 isotope be kept
to a minimum. Neutron absorption
could be decreased by using a careful
chemical process to remove the impu-
rities, although the technique was dif-
ficult and posed major problems. Be-
cause the number of neutrons lost
from a piece of uranium depends on
the area of the surface and because
the number of neutrons captured de-
pends on its mass or volume, neutron
escape or capture could be reduced
by using a suitable shape and size.
The greater the amount of uranium.
the smaller would be its surface area
relative to volume and thus, propor-
tionately, the fewer neutrons that
could be lost through the surface or
captured by the U-238. During fis-
sion, production of at least one neu-
tron in excess of those lost or cap-
tured would cause the uranium to
reach its critical mass and possibly
trigger a chain reaction.
The dilemma researchers faced in
1939 was ascertaining the exact size
of this critical mass. The consensus
was that a tremendous amount of ura-
nium— far more than had ever been
produced and concentrated — would
be necessary. A practical solution to
the supposed enormity of the prob-
lem therefore was to reduce the size
of the critical mass by decreasing the
number of neutrons captured by the
U-238. The U-235 could be separat-
ed from the U-238, or the ratio of
U-235 to U-238 could be increased
artificially.
Theories about what should be
done, however, did not quite coincide
with what could be done at this stage
of the research. Because the two ura-
nium isotopes were chemically identi-
cal, their separation by chemical
means was impossible. And the about
1 -percent difference in mass between
U-235 and U-238 meant that separa-
tion by physical means would be most
difficult. Although producing a suffi-
cient amount of pure U-235 or
U-235-enriched natural uranium to
maintain a chain reaction in a critical
mass of practical proportions ap-
peared only barely possible, there
were those who continued to work on
the multistage problem of separating
what were considered, in Fermi's
10
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
words, "almost magically inseparable"
isotopes. ^°
All separation methods deemed
possible were based on the difference
in atomic weight. One process, the
electromagnetic method, employed a
mass spectrometer or spectrograph.
In this process a stream of charged
particles of a given element is project-
ed through a magnetic field, which
deflects them from their original path.
Because the atoms of a heavier iso-
tope will be more strongly affected by
the magnetic field than those of a
lighter isotope, the stream of particles
will be separated into two or more
streams, each containing a different
isotope, which can then be collected
in different receivers. Alfred O. Nier
of the University of Minnesota did the
initial work on this process. At this
time, the electromagnetic method
proved to be not only ridiculously
slow but also quantitatively insuffi-
cient. It would have taken twenty-
seven thousand years for each mass
spectrometer to produce a single
gram of U-235 or 27 million spec-
trometers a whole year to separate a
kilogram of the isotope.
Another process, the gaseous diffu-
sion method, was based on the princi-
ple that if two gases of different
atomic weights are passed through a
porous barrier, the lighter gas will
diffuse through more readily. First,
uranium would have to be trans-
formed from its naturally solid state
into a gas; then, because of the 140-
to-1 ratio of U-238 to U-235, the dif-
fusion process would have to be re-
peated in order to produce any ap-
preciable amount of U-235 or U-235-
enriched uranium. Scientists in Great
Britain performed most of the early
theoretical and experimental work on
this method. In the United States, it
was not until late 1940 that physicist
John R. Dunning and a small group
of collaborators at Columbia Univer-
sity began intensive research into the
technical problems of gaseous
diffusion. ^^
A third method was the centrifuge
process, in which uranium in a gase-
ous form is rotated rapidly in a cylin-
der. Because centrifugal force causes
the atoms of the heavier isotope to
amass along the outer walls and those
of the Hghter isotope to concentrate
around the axis of rotation, the de-
sired isotope can then be drawn off.
Jesse W. Beams at the University of
Virginia and others in the United
States seemed to offer the best initial
promise for separating uranium iso-
topes, but the magnitude of the engi-
neering problem was such that, as
with the other separation methods,
the centrifuge process offered no
quick or easy solution.
The avenues of research were not
solely Hmited to isotope separation
methods. At Columbia University,
Enrico Fermi and Leo Szilard, a
refugee physicist from Hungary, ex-
perimented with the possibility of
achieving a chain reaction in urani-
um without separating its isotopes —
research that in the not too distant
future would culminate in the world's
first chain reaction. Basing their in-
vestigations on research that Fermi
had carried out five years earlier on
'° Enrico Fermi, "Physics at Columbia University:
The Genesis of the Nuclear Energy Program," Phys-
ics Today 8 (Nov 55): 14.
i» For Cunning's work see MDH, Bk. 2, Vol. 2,
"Research," pp. 3.1-3.2, DASA.
A HISIORY OF AlOMIC ENERGY TO 1939
11
ihc use of moderators to slow down
neutrons, they explored the likelihood
that a moderating substance might be
mixed with natural uranium in such a
way that the high-speed fission-pro-
duced neutrons could be sufficiently
slowed before meeting other uranium
atoms so as to escape capture
by U-238 and remain free to pene-
trate the U-235.
The two most promising modera-
tors were hydrogen and carbon.
Water might make a good moderator;
however, because hydrogen exists in
two natural isotopes (light hydrogen,
the more prevalent, with a mass of 1,
and heavy hydrogen, or deuterium
with a mass of 2), "heavy water," con-
taining deuterium, should make an
even better one. Scientists in France
and England had investigated the use
of heavy water, but it was extremely
costly to produce and was highly vola-
tile. Feeling that heavy hydrogen was
in some ways less efficient as a mod-
erator, Fermi and Szilard turned their
attention to carbon, which was readily
available in the form of graphite.
Proving its feasibility through theoret-
ical investigation and experimentation
would take time, energy, and money,
but the two scientists were confident
they could achieve a chain reaction. ^^
Because such a chain reaction could
provide a tremendous amount of
energy in a form that might be con-
verted into power, this uranium-
graphite system promised to have
ready military application for driving
'^ For the activities of Fermi and Szilard during
1939 see Enrico Fermi, "Physics at Columbia," pp.
12-16: Ms, Leo Szilard, "Documents Relating to
Period March 1939 to July 1940" (hereafter cited as
Szilard Documents), Incl to Ltr, Compton to
Groves, 13 Nov 42, Admin Files, Gen Corresp, 201
(Szilard), MDR.
large ships or aircraft but seemed im-
practical for use as a bomb. A bomb
would have to be so large that the
sudden release of energy in an un-
controlled nuclear explosion would
blow it apart before more than a
small amount of energy was freed;
that amount was not worth the great
effort necessary to detonate it.
Yet, if it were possible to separate
U-235 from the naturally more preva-
lent U-238 or to enrich natural urani-
um greatly in its U-235 isotope, then
a fast-neutron chain reaction might be
achieved and extremely powerful
bombs, far smaller than any explosive
uranium-graphite system, could prob-
ably be built. Controlled energy from
a fast-neutron chain reaction could, of
course, be used as a power source;
but, uncontrolled, it would provide a
far more powerful explosion than
ever before attained by man. Though
perhaps too heavy for a conventional
bomber, a U-235 bomb could be
brought by ship into an enemy port
and exploded with devastating effect.
In early 1939, however, the chances
of constructing a bomb of U-235 ap-
peared far less certain than those of
building a power-producing uranium-
graphite system. To use Fermi's
words, there seemed "little likelihood
of an atomic bomb, little proof that
we were not pursuing a chimera." ^^
Nevertheless, possible military ap-
plication of atomic energy was of in-
creasing interest to a group of for-
eign-born physicists now living and
working in the United States. These
men — including Enrico Fermi from
Italy; Leo Szilard, Eugene Wigner,
and Edward Teller from Hungary;
'^ Laura Fermi, Atoms in the Family, p. 164.
12
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
and Victor Weisskopf from Austria —
knew that government-supported nu-
clear research was under way at the
Kaiser Wilhelm Institute in Berlin,
and the likely military consequences
of a German breakthrough worried
them very much. As most of them had
only recently fled their homelands to
escape fascist tyranny, they had no
wish to see Nazi Germany acquire a
means of dominating the whole
world. Indeed, if any nations were to
exploit atomic energy for mihtary
purposes, they believed the democra-
cies would do well to be first.
These physicists therefore directed
their energies toward two ends: keep-
ing all advances in nuclear research a
secret to discourage an all-out
German effort, and obtaining support
from the American government for
further nuclear research. The group
almost achieved one of its goals in
early 1939, when leading physicists in
the United States and Great Britain
pledged not to publish the results of
their work in the field. However, in
France, Frederic Joliot-Curie refused,
and his determination to publish his
own research led to continued publi-
cation by scientists in other countries.
It was not until late 1940, after a
large number of articles had appeared
in scientific journals and the popular
press, that publication on atomic
energy generally ceased.
Efforts To Enlist Support of the
U. S. Government
The atomic scientists' first attempt
to gain support from the U.S. govern-
ment for their atomic energy research
came in March of 1939, even as
German troops were completing the
occupation of Czechoslovakia. Sched-
uled to give a lecture in Washington,
D.C., on the sixteenth, Enrico Fermi
arrived in the national capital with a
letter of introduction from Dean
George B. Pegram of Columbia to
Rear Adm. Stanford C. Hooper, di-
rector of the Technical Division,
Office of the Chief of Naval Oper-
ations. On the morning of the seven-
teenth, Fermi met with Admiral
Hooper and other individuals, includ-
ing Ross Gunn, a physicist and techi-
cal adviser of the Naval Research Lab-
oratory. Pegram, who was also a phys-
icist, had explained in his letter what
Fermi discussed in his lecture,
namely, the importance of atomic
energy and its possible uses for man-
kind, although both men were pru-
dent about making predictions.
Gunn and his associates at the
Naval Research Laboratory already
were aware of the potentialities of
atomic energy; however, they were
more interested in the prospects for
nuclear ship propulsion than in devel-
oping an atomic bomb. Now Fermi's
visit spurred them on to continue
their own investigations, but it did
not lead to any naval support for the
scientists working at the universi-
ties.^^ A second approach to Gunn,
made by Szilard in June, was no more
successful. While the Navy pursued its
own program of research on uranium
isotope separation, Gunn indicated to
Szilard in July that "it seems almost
impossible, in the light of the restric-
i* Ibid., pp. 162-65; Testimony of Gunn in U.S.
Congress, Senate, Special Committee on Atomic
Energy, Atomic Energy: Hearings on S. Res. 179, 79th
Cong., 1st and 2d Sess., 27 Nov 45-15 Feb 46
(Washington, D.C.: Government Printing Office,
1945-46), pp. 365-67. Gunn testified that Army of-
ficers were present at the 17 March conference, but
this does not appear to have been the case.
A HISTORY OF ATOMIC ENERGY TO 1939
13
tions which are imposed on Govern-
ment contracts for services, to carry
through any sort of agreement that
would be really helpful to you." ^^
By mid-July, then, Szilard, Teller,
and Wigner concluded that another
channel had to be found. The results
of ongoing nuclear research indicated
that a chain reaction could very prob-
ably be achieved in a uranium-graph-
ite system, "and that this possibility
had to be considered as an imminent
danger." ^^ There was, moreover,
ominous news from Europe of contin-
ued German interest and progress in
nuclear research. American scientists
returning from visits to Germany re-
ported a growing emphasis on the in-
vestigation of isotope separation, with
the apparent objective of achieving a
fast-neutron chain reaction in U-235,
the basis of an atomic bomb.^^ After
moving into Czechoslovakia, the Ger-
mans closed the door on the coun-
try's uranium ore exports. Convinced
that the need to keep other uranium
deposits from falling into German
hands required action at the highest
level, Szilard, Teller, and Wigner ap-
proached Einstein. At first, Szilard
thought to have Einstein approach
the Department of State and use his
acquaintance with the royal family in
Belgium as a means for stopping ura-
nium ore shipments to the Germans.
But, after further discussion, he de-
cided a direct approach to the White
House was necessary. Through a ref-
ugee journalist friend, Szilard secured
an introduction to Alexander Sachs, a
Wall Street economist and student of
international affairs who had long
been an informal adviser of President
Franklin D. Roosevelt. Sachs was fa-
miliar with the subject of atomic
energy, having read avidly Hahn and
Strassmann's first report and having
followed subsequent publications on
atomic fission. Also, he had become
acutely aware of the possible military
applications of atomic energy during
Niels Bohr's visit to the Institute of
Advanced Study at Princeton. Indeed,
the growing tensions in Europe and
Germany's increasing threat to world
peace eventually led him to discuss
the Hahn-Strassmann report and its
possible effect on the international
situation in a brief session with
Roosevelt early in March.
Sachs agreed to help, and he and
Szilard concluded that a letter from
Einstein to Roosevelt would empha-
size the importance of their message.
The letter, primarily the work of Szi-
lard, was drafted in Sachs's office. Szi-
lard and Teller took it to Einstein,
who was vacationing on Long Island,
on 2 August. Sources disagree over
whether Einstein rewrote the Sachs-
Szilard draft or merely put his name
to it; but, in any event, Szilard re-
turned to Sachs with a signed letter
from Einstein to the President.^®
>^ Ltr, Gunn to Szilard, 10 Jul 39, Szilard Docu-
ments, MDR.
'« Szilard Documents, p. 7, MDR.
'^ Arthur Holly Compton, Atomic Qiiest: A Personal
S'arrative (New York; Oxford University Press,
1956). p. 118.
'^ Account of approach to President Roosevelt
through Sachs based on Interv, Stanley L. Falk with
Sachs, 18 Jul 60, CMH; Ms, Alexander Sachs, "Early
History [of] Atomic Project in Relation to President
Roosevelt, 1939-40" (hereafter cited as Sachs Histo-
ry), 8-9 Aug 45, pp. 1-6, Admin Files, Gen Corresp,
201 (Sachs), MDR; Testimony of Sachs in Atomic
Energy Hearings on S. Res. 179. pp. 2-11 and 553-59;
Szilard Documents, p. 7, MDR; Otto Nathan and
Heinz Norden, eds., Einstein on Peace (New \'ork:
Simon and Schuster, 1960). pp. 291-97; Nat S,
Finnev, "How FDR. Planned To Use the A-Bomb,"
14
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
This letter, a milestone in the Ameri-
can atomic energy program, states
that "it is almost certain that this [a
chain reaction in a large mass of
uranium] could be achieved in the im-
mediate future" and that this phe-
nomenon could possibly lead to the
construction of a new type of an ex-
tremely powerful bomb.^^
To this letter, Szilard himself added
a careful memorandum. In it he ex-
plained in more detail the scope and
effects of research on atomic fission,
the unproved nature of its conclusion,
and the need for financial support for
further investigation. He pointed out
that atomic energy released through a
chain reaction achieved with slow
neutrons could be utilized for ship or
aircraft propulsion, and also raised
the possibility that a fast-neutron
chain reaction would result in a pow-
erful explosive. Szilard also reempha-
sized the need for acquiring large
stocks of uranium ore from the Bel-
gian Congo and suggested that an-
other attempt to arrange for the with-
holding of publications on the subject
of nuclear research might be neces-
sary. ^° Included with the letter and
memorandum were reprints of two ar-
ticles from the Physical Review that
provided documentation of the scien-
tific points raised by Einstein and
Szilard.
Look, 14 Mar 50. pp. 25-27; Geoffrey T. Hellman.
"A Reporter at Large: Contemporaneous Memoran-
da of Dr. Sachs," \eu' Yorker, 1 Dec 45, pp. 73-76;
Edward Shils, "Leo Szilard — A Memoir," Encounter
23 (Dec 64): 35-41; Eugene Rabmowitch, "1882-
1964" and "1898-1964" (obituaries on James
Franck and Leo Szilard, respectively). Bulletin of the
Atomic Scientists 20 (Oct 64): 16-20.
^* Ltr, Einstein to Roosevelt, 2 Aug 39, repro-
duced in the Appendix to this volume.
2° Memo, Szilard to Roosevelt, 15 Aug 39, Szilard
Documents, MDR.
Despite the agreed upon necessity
for haste, almost two months passed
before Sachs was able to bring Ein-
stein's letter and its inclosures to the
White House. "Mere delivery of
memoranda was insufficient," he
felt.^^ In the hectic days of August
and September 1939, with war in
Europe first an imminent danger and
then a frightening actuality, there
seemed little likelihood that Roosevelt
could spare Sachs more than a few
moments. Not until early October did
Sachs find a time he felt was suitable
to approach the President.
The story of Sachs's visit to the
White House has been told frequently
and with several variations. Suffice it
to say that Sachs met with Roosevelt
for over an hour on 1 1 October.
Reading aloud, Sachs prefaced Ein-
stein's letter and Szilard's memoran-
dum with a letter of his own in which
he summarized and amplified the
other material, emphasizing German
nuclear research, the danger of
German seizure of Belgian uranium,
and the "urgent" need to arrange for
American access to the uranium ore
of the Belgian Congo. He stressed the
necessity of enlarging and accelerat-
ing experimental work, which could
not be done on limited university
budgets, and seconded the suggestion
made in Einstein's letter for liaison
between the government and the
scientists. ^^
The President's initial reaction was
one of skeptical interest. He was
doubtful about the availability of
funds to support nuclear research and
^'Testimony of Sachs in Atomic Energy Hearings on
S. Res. 179, p. 556.
"Ltr, Sachs to Roosevelt. 11 Oct 39, Exhibit 3,
Sachs Historv, MDR.
A HISTORY OF ATOMIC ENERGY TO 1939
15
felt, moreover, that there were other
aspects of national defense with a
higher claim for attention. Neverthe-
less, he invited Sachs to breakfast the
next morning and, at this second
meeting, was convinced of the neces-
sity for action.
President Roosevelt's 12 October
decision to explore the potentialities
of atomic energy eventually led to
complete governmental direction of
nuclear research in the United States.
And, in the early years of its develop-
ment, no single government agency
was to play a more important role
than the United States Army.
PART ONE
BEGINNINGS OF THE ATOMIC MISSION
Chapter I
The Army and the Atomic Energy
Program, 1939-1942
At eight o'clock on the evening of
17 June 1942, Col. James C. Marshall
received a teletype message from
Washington, D.C., to report to Maj.
Gen. Eugene Reybold, chief of the
Corps of Engineers, "for temporary
duty,"^ thus interrupting his present
assignment as commanding officer of
the Syracuse (New York) District. Ar-
riving at General Reybold's office the
next day, Marshall received further
instructions to report to Brig. Gen.
Wilhelm D. Styer, chief of staff to the
commanding general of the War De-
partment's Services of Supply, a
major division newly created to over-
see Army logistics. Late in the after-
noon. Colonel Marshall learned from
General Styer the precise nature of
his new assignment: General Reybold
had chosen him to form a new engi-
neer district "for construction of a
new manufacturing plant." ^ The lo-
' Col James C. Marshall, Chronology of District X
(hereafter cited as Marshall Diary), 17 Jun 42-31
Oct 42, OCG Files, Gen Corresp, Groves Files, Misc
Recs Sec, behind Fldr 5, MDR. On Marshall's earlier
career see George W. Cullum, Biogiaplucal Register of
the Officers and Graduates of the U.S. Military Academy. 9
vols. (1-3, 3d rev. ed. and enl., Boston: Houghton,
Mifflin and Co., 1891; 4-9, aegis of Association of
Graduates, U.S. Military Academy, 1901-50),
6B:1978, 7:1298,8:366,9:258.
2 Marshall Diary, 18 Jun 42, MDR.
cation had not been selected but,
Styer explained, the plant would be
part of a project already in progress
to develop atomic energy for military
purposes. Thus the Army became di-
rectly involved in a project in which it
had been playing a minor and some-
what intermittent role since the fall of
1939.
Oyigins of the Army 's Role
The Army's expanded role in the
American atomic energy program in
mid- 1942 grew out of developments
that had occurred as a result of the
outbreak of World War II and the
subsequent involvement of the United
States in that conflict. On the morn-
ing of 12 October 1939, persuaded by
Alexander Sachs's urgent arguments.
President Roosevelt agreed to investi-
gate the desirability of providing
some preliminary support for inde-
pendent and private research.
Roosevelt's military aide, Maj. Gen.
Edwin M. Watson, immediately re-
quested that the Army and the Navy
send officers to the White House to
talk to an "inventor" about a new ex-
plosive. At two o'clock that same
afternoon, the Armv sent Lt. Col.
20
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Keith F. Adamson, chief of the Am-
munition Division, Ordnance Depart-
ment, and his chief civiHan assistant,
Arthur Adelman; the Navy sent
Comdr. Gilbert C. Hoover, also an
ordnance specialist. In General Wat-
son's office, Sachs repeated much of
his earlier presentation to the Presi-
dent. After some discussion, the
group broke up with the understand-
ing that Watson would advise them
what specific action the President
desired.^
The Army's Chemical Warfare
Service (CWS) also received Sachs's
material on atomic energy. Lt. Col.
Haig Shekerjian, the CWS executive
officer, and another chemical warfare
officer may have been present at the
meeting in the White House, or they
may have been briefed later in the
afternoon. General Watson's objective
was to test Sachs's information
against the knowledge and experience
of the technical services most likely to
be concerned with development of
nuclear research and bombs. Ironical-
ly, the technical service that eventual-
ly had the most to do with develop-
ment of the atomic bomb, the Corps
of Engineers, was not consulted.'*
The first reaction of the Army
representatives to the military poten-
tialities of atomic energy was not gen-
erally enthusiastic. Colonel Adamson
displayed a cool skepticism, although
3 Intervs, Stanley L. Falk with Adamson, 22 Apr
60, and with Sachs, 18 Jul 60; Ltr, Adamson to Maj
Gen Levin H. Campbell, Jr. (Chief of Ord), 26 Jun
44; Memo, Arthur Adelman, sub: Fission Explosives
(hereafter cited as Adelman Fission Memo), 30 Jun
44, p. 4. All in CMH.
■* Adamson and Sachs Intervs, 22 Apr 60 and
18 Jul 60; Interv, Falk with Shekerjian, 27 Oct 59;
Ltr, Adamson to Campbell, 26 Jun 44; Adelman Fis-
sion Memo, pp. 4-5; Ltr, Shekerjian to Falk, 1 1 Sep
59. All in CMH.
he later warmed to the subject. He
apparently questioned whether nucle-
ar research had advanced far enough
for the government to support it with
any reasonable hope of success.
Moreover, with an eye to Sachs's Wall
Street background, he was suspicious
of the financier's motives in urging
purchase of Belgian Congo uranium.^
A similar response came from the
Chemical Warfare Service. Despite
Colonel Shekerjian's favorable reac-
tion, Maj. Maurice E. Barker, chief of
the CWS Technical Division, ex-
pressed a decidedly negative view.
After studying Einstein's letter and
Szilard's memorandum. Major Barker
concluded that there was "no basis"
for believing that the bombardment
of uranium by neutrons would
produce an explosion. While conced-
ing that the proposed nuclear
research "would be extremely inter-
esting, and might have considerable
scientific value," he thought that "the
chance of anything of military value
being developed ... so slight that it
would not justify the expenditure of
funds available for research for that
purpose." ^
The Army's initial skepticism may
be attributed to a number of factors.
For all of Alexander Sachs's enthusi-
asm, even the group of American and
foreign-born physicists still regarded
the potentialities of atomic energy as
only a "reasonable possibility," ^ as
5 Adamson and Sachs Intervs, 22 Apr 60 and
18 Jul 60, CMH; Ltr. Adamson to Campbell, 26 Jun
44, CMH; IVashmgton Post. 26 Mar 46.
^ Quotation from Memo for File, Barker, sub:
Uranium Activated bv Neutrons as an Explosive and
Source of Power (Proj A 10), 13 Oct 49, Incl G to
Adelman Fission Memo. Shekerjian Interv, 27 Oct
59. Ltr, Shekerjian to Falk, 1 1 Sep 59. All in CMH.
'' Louis A. Turner, "Nuclear Phvsics," Rei'iews of
Modem Physics 12 (Jan 40): 21.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1939-1942
21
the tentative tone of Einstein's letter
and Szilard's memorandum readily
showed. Unlike the Navy, in 1939 the
Army had no central research organi-
zation that might have seized upon
the abstract possibilities of atomic
energy. Consequently, budget-minded
Army officers, who had served
through a period of extremely re-
stricted military expenditures in the
1930's, were not likely to lose their
restraint over new and possibly far-
fetched ideas. They had witnessed
drastic cuts in funds, especially for
Army research and development,
which was allotted only 1.1 percent of
military expenditures in fiscal year
1939. Army policy called for immedi-
ate development of critical items
rather than eventual production of
better weapons and equipment
through prolonged research. Ord-
nance and chemical officers were, of
course, particularly aware of this situ-
ation. Thus, it was hardly surprising
that Sachs's proposals failed to trans-
late their scientific conservatism into
military enthusiasm.® Not until civil-
ian research and development had
buttressed the theoretical predictions
of the physicists with undisputable
scientific evidence and the nation was
involved in war would the Army
assume a principal role in developing
the military potentialities of atomic
energy.
® Mark S. Watson, Chief of Staff: Prewar Plans and
Preparatwm (Washington, D.C.: Government Print-
ing Office, 1950), pp. 31-32 and 42-44; Constance
McLaughlin Green, Harr\ C. Thomson, and Peter
C. Roots, The Ordnance Department: Planning Munitiom
for War (Washington, D.C.: Government Printing
Office, 1955), pp. 204-08; Leo Brophy and George
J. B. Fisher, The Chemical Warfare Sennce: Organizing
for War (Washington, DC.: Government Printing
Offiice, 1959). pp. 37-38. All in the series U.S. Armv
m World War IL
Decision To Develop Atomic Weapons
Through the President's Advisory
Committee on Uranium, established
on 12 October 1939, the Army had
an opportunity to express its general-
ly negative reaction to the military
potentialities of atomic energy. This
small group, charged with making
recommedations on the ideas and ma-
terials submitted by Sachs, was com-
prised of Colonel Adamson, Com-
mander Hoover, and, as chairman,
Lyman J. Briggs. Briggs was director
of the National Bureau of Standards,
which was one of the principal gov-
ernment agencies of the pre-World
War II period concerned with re-
search in the physical sciences.^
The first meeting of the Uranium
Committee, as it came to be called,
took place on the morning of 21 Oc-
tober at the Bureau of Standards. The
committee had invited Alexander
Sachs and, at his suggestion, also Leo
Szilard, Edward Teller, Eugene
Wigner, and Albert Einstein to attend
its session. Einstein was unable to be
present but two other physicists, Fred
L. Mohler of the Bureau of Standards
and Richard B. Roberts of the Carne-
gie Institution, attended to provide
the committee with technical guid-
ance. Szilard, Teller, and Wigner out-
lined the steps they believed neces-
sary to attain a chain reaction in the
uranium-graphite system proposed by
Fermi and Szilard. During their pre-
9 Smyth Report, p. 32; Ltr, Sachs to Wigner, 17
Oct 39; Exhibit 4, Sachs History, MDR; Ltr, Roose-
velt to Einstein, 19 Oct 39, President's Secy's Files,
Sachs Fldr, FDR; Sachs Interv, 18 Jul 60, CMH;
Rexmond C. Cochrane, Measures for Progress: A Histo-
ry of the Xational Bureau of Standards (Washington,
D.C.: National Bureau of Standards, U.S. Depart-
ment of Commerce, 1966), p. 362.
22
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
sentadon, the three scientists request-
ed $6,000 to purchase the graphite
and emphasized the need for secrecy
about ail activities relating to nuclear
research.
In the discussion that followed,
three schools of thought became ap-
parent. Colonel Adamson and Com-
mander Hoover, generally skeptical,
stated their belief that several years of
further research would be needed
even to determine whether the mili-
tary possibilities of atomic energy
were sufficient to justify government
support. In contrast, Sachs, Briggs,
and Teller were almost enthusiastic
about the chances of success. Main-
taining a more conservative approach,
Szilard and Wigner portrayed the
great possibilities of their work but
also stressed the as yet tentative
nature of their conclusions. ^°
In spite of the cautious attitude of
Adamson and Hoover, the Uranium
Committee's report to the White
House on 1 November gave the scien-
tists in effect what they wanted. While
conceding that the harnessing of
atomic energy for power or bombs
was still only a theoretical possibility,
the committee nevertheless recom-
mended that "in view of the funda-
mental importance" and "potential
military value" of nuclear research,
"adequate support for a thorough in-
vestigation of the subject should be
provided." This support should in-
clude funds for immediate purchase
of 4 metric tons of pure graphite and,
if the results of initial experiments
warranted continuing the program,
additional funds to obtain 50 tons of
uranium oxide. ^^
The Uranium Committee submitted
its report and recommendations to
President Roosevelt through General
Watson. Apparently viewing the
report as preliminary, Watson asked
Chairman Briggs for a special recom-
mendation before he advised the
President. Until then, no executive
action could be expected.
Consequently, the members of the
Uranium Committee kept in touch
with the nuclear research program at
Columbia University, awaiting word
of progress from the scientists. In the
interim, the Naval Research Laborato-
ry continued its interest in university
research that pertained to its own in-
vestigations into isotopic separation.
At this stage, however, neither the
Navy nor the Uranium Committee
made any effort to coordinate or link
the various nuclear research programs
in progress. Such attempts as were
made came from the scientific com-
munity and from Sachs rather than
from any governmental agency. ^^
Then, in January 1940, Briggs took
the first concrete step to obtain gov-
ernment funds for the university sci-
entists. From the Navy, up to now
more interested in nuclear research
than the Army, Briggs obtained a
*° Sachs History, pp. 6-7, Admin Files, Gen Cor-
resp, 201 (Sachs), MDR; Adamson and Sachs In-
tervs. 22 Apr 60 and 18 Jul 60, CMH; Washiriglon
Post, 26 Mar 46; Memo, Szilard, sub: Mtg of 21 Oct
39 m Washington, D.C., 26 Oct 39, Inci H to Adel-
man Fission Memo, CMH; Szilard Documents, p. 7,
Admin Files, Gen Corresp, 201 (Szilard), MDR.
^'Quoted words from Memo, Briggs, Adamson,
and Hoover to President, sub: Possible Use of Ura-
nium for Submarine Power and High Destructive
Bombs, 1 Nov 39, Exhibit 5, Sachs History, MDR
(also in Adelman Fission Memo, following p. 5,
CMH). Testimony of Sachs in Atomic Energy Heanngs
on S. Res. 179. p. 560.
'2 Sachs History, pp. 10-11, MDR; Ltr, Adamson
to Campbell, 26 Jun 44, CMH; Adamson Interv,
22 Apr 60, CMH; Testimony of Gunn in Atomic
Energy Heanngs on S. Res 179, p. 367.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1939-1942
23
promise of $3,000. On 15 January, he
called on Maj. Gen. Charles M.
Wesson, the chief of Army Ordnance,
and asked him to match this sum.
Briggs outlined the potentialities of
atomic fission. "It appears," reads the
account of the conversation in Gener-
al Wesson's office diary, "that this de-
velopment has possibilities from an
explosive viewpoint." These "possi-
bilities" and Briggs's reference to the
fact that the President was "interested
in this project" were enough to make
the Ordnance chief agree to advance
$3,000 out of Picatinny Arsenal funds
for the development of explosives. ^^
The Army and Navy funds went to
the Bureau of Standards, which allot-
ted them to Columbia University in
mid-February. Fermi and his col-
leagues used the money to purchase
graphite in quantities that, at the
time, seemed huge. They needed a
sufficient amount of the highly puri-
fied carbon substance to determine its
capture cross section, that is, its ca-
pacity to absorb neutrons. With this
information they could then ascertain
the practicability of achieving a slow-
neutron chain reaction in a uranium-
graphite system. ^^
Meanwhile, Alexander Sachs and
the scientists exerted increasing pres-
sure on the President and the Army
and Navy. Einstein wrote to Sachs on
7 March, summarizing the situation
and suggesting that the information
concerning new evidence of German
interest in atomic energy be passed
'^Min, Wesson Confs: Jan-Jun 40, 15 Jan 40, Ord
Historical Files, Hist Br, OCO.
'''Memo, Briggs to Watson, sub: Your Memo of
Feb 8ih, 20 Feb 40, Exhibit 6b, Sachs History,
MDR; Min. Wesson Confs, 15 Jan 40, OCO; Enrico
Fermi, "Phvsics at Columbia," Physics Today 8 (Nov
55): 15.
on to President Roosevelt. This Sachs
did, including also Einstein's recom-
mendations that steps be taken to halt
publication of articles on atomic sub-
jects and that a "general policy . . .
[be] adopted by the Administration
with respect to uranium." But Ein-
stein's views brought no immediate
response from the White House. In
fact, after discussion with Colonel Ad-
amson and Commander Hoover in
late March, General Watson accepted
Adamson's suggestion that no further
action be taken until an official report
on the research at Columbia was
available. ^^
The official report was not ready,
however, when the Uranium Commit-
tee held its second meeting on 27
April 1940. The meeting took place
as a result of several factors, includ-
ing Sachs's continued urgings for
greater support, the reports of prom-
ising progress in the nuclear experi-
ments at Columbia and elsewhere,
and an ominous turn of events in the
war of Europe. Since the first meeting
in October 1939, the atomic scientists
had proven definitely that fission oc-
curred only in the U-235 isotope and,
in experiments with the centrifuge
system of isotopic separation at the
University of Virginia, had been suc-
cessful in enriching a gram of urani-
um to 10 percent U-235. In Europe,
the Germans had successfully invaded
Norway in early April and, as a result,
secured control of the Norsk Hydro
plant, the only large facility in the
world producing heavy water. Thus
>^ Sachs History, pp. 11-12; Etrs. Einstein to
Sachs (source of quotation), 7 Mar 40, Exhibit 7a,
Sachs to President, 15 Mar 40, Exhibit 7b, Watson
to Sachs. 27 Mar 40, Exhibit 7c, ibid.; Szilard Docu-
ments, pp. 8-9. MDR.
24
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
they had obtained a ready source of
the substance they were suspected of
using as a moderator to achieve a
slow-neutron chain reaction.
Chairman Briggs, Colonel Adam-
son, and Commander Hoover now lis-
tened more sympathetically to the ar-
guments presented by Alexander
Sachs, Enrico Fermi, George Pegram,
Leo Szilard, Eugene Wigner, and
Rear Adm. Harold G. Bowen, director
of the Naval Research Laboratory.
While the committee still did not
make any formal recommendations, it
reached general agreement that nu-
clear research should be vigorously
pursued, even if this required large
sums of money, and that steps should
be taken, as Szilard strongly urged, to
halt further publications on atomic
matters. ^^
Developments in May 1940 in the
laboratory and on the war front
brought further justification for pro-
viding additional funds for nuclear re-
search. Promising results at Columbia
led scientists there to propose a plan
to study methods of uranium isotope
separation, hopefully with Navy sup-
port, and to establish a large-scale ex-
perimental program that would dem-
onstrate beyond any doubt that a
chain reaction could be maintained in
a uranium-graphite system. The Ger-
mans' successful invasion of Belgium
and Holland in mid-May and new re-
ports on their interest in uranium re-
'* Smyth Report, p. 33, errs in giving the date
of the Uranium Committee's second meeting as
28 April. Sachs History, pp. 12-20, MDR; Szilard
Documents, pp. 9-10, MDR; Testimony of Gunn in
Atomic Energy Hearings on S. Res. 179, pp. 367 and
370; Ltr, Pegram to Bowen, 7 Apr 40, Incl I to
Adelman Fission Memo, CMH; William L. Laurence,
Men and Atoms: The Discovery, the i'ses. and the Future of
Atomic Energy (New York: Simon and Schuster,
1959), pp. 73-74.
search underlined Sachs's efforts to
secure action on control of Belgian
uranium and to obtain financial and
administrative support for atomic re-
search in the United States. ^'^
New funds came from a variety of
sources. On 23 May, the Carnegie In-
stitution of Washington allotted
$30,000 for research on uranium by
members of its own staff. A short
time later. Colonel Adamson fur-
nished $20,000 from Army Ordnance
funds to combine with a substantially
larger contribution from the Navy and
some money from the Bureau of
Standards, making a total of more
than $100,000. This amount was
more than sufficient to underwrite
contracts at Columbia and the Univer-
sity of Virginia and to increase sup-
port of the work at the Naval Re-
search Laboratory.^®
German occupation of Belgium
gave urgency to the question of how
the United States could control and
acquire the rich uranium ore in the
Congo. Seeking a solution, Alexander
Sachs met with President Roosevelt at
the end of May and, a few days later,
also with Uranium Committee Chair-
man Briggs, Professor Harold C.
Urey, a chemist on the staff at Colum-
bia University, and Admiral Bowen of
the Naval Research Laboratory. At
''' Sachs History, pp. 20-25, MDR; Szilard Docu-
ments, p. 10, MDR; Ltr, Pegram to Briggs, 6 May
40, Incl K to Adelman Fission Memo, CMH; Lau-
rence, Men and Atoms, p. 41.
'^ James Phinnev Baxter 3rd, Scientists Against
Time, Science in World War II (Boston: Little,
Brown and Co., 1946), p. 423; Adelman Fission
Memo, p. 6 and Incls A-E, CMH; MDH, Bk. 1, Vol.
4, "Auxiliary Activities," pp. 12.2-12.3, DASA; Ad-
amson Interv, 22 Apr 60, CMH; Ltr, Adamson to
Campbell, 26 Jun 44, CMH; Testimony of Gunn in
Atomic Energy Hearings on S. Res. 179, pp. 367-71;
Smyth Report, p. 33; Compton, Atomic Quest, p. 29.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1939-1942
25
Briggs's suggestion, Sachs began
looking into the possibility of getting
uranium directly from the Congo.
For some time Sachs had been
aware that Edgar Sengier was in New
York. Managing director of Union
Miniere du Haut Katanga, the Belgian
firm that controlled the Shinkolobwe
mine in Katanga Province of the
Congo, Sengier had come to New
York from Brussels in the fall of
1939, aware of the rising importance
of uranium from conversations with
French and British scientists. He had
ordered shipped to America all
radium held by his firm in Belgium —
some 120 grams worth nearly $2 mil-
lion. At the same time, he had direct-
ed that uranium ores stocked by
Union Miniere at Oolen, Belgium,
also be shipped to the United States,
but little or none was sent before the
German invasion made it impossible.
Sachs and Urey went to see Sengier
in New York in early June 1940. Sen-
gier gave them considerable informa-
tion on the status of Congo uranium
but would not agree to Sachs's pro-
posal that Union Miniere ship ore to
the United States, even with the stipu-
lation that U.S. officials would not re-
export the ore without special
permission. ^^
Failure to achieve an agreement
with Sengier left the uranium re-
search program dependent upon Ca-
'» Sachs History, pp. 25-26, MDR; Ltrs, Sachs to
Watson, 23 May 40, Exhibit 11a, and Briggs to
Sachs, 5 Jun 40, Exhibit 18, ibid.; Eeslie R. Groves,
\ow It Can Be Told: The Story of the Manhattan Project
(New York: Harper and Brothers, 1962), pp. 33-34;
Compton, Atomic Quest, p. 96; Smyth Report, p. 33;
Richard G. Hewlett and Oscar E. Anderson, Jr., The
\eu' World. 1939-1946. A History of the United
States Atomic Energy Commission, Vol. 1 (Universi-
ty Park, Pa.: Pennsylvania State University Press,
1962), p. 26.
nadian sources. Fortunately, by the
end of 1940, small amounts of Cana-
dian uranium were available as a
result of arrangements based on earli-
er conversations between Dean
George B. Pegram of Columbia Uni-
versity and a representative of Eldora-
do Gold Mines, Ltd., owner of the
Canadian deposits. 2°
Funds contributed in the summer
of 1940 began a two-year period of
rapid growth in the program to ex-
ploit atomic energy for military pur-
poses. During this time, American
governmental leaders left develop-
ment of the new energy source to ci-
vilian organizations, in spite of its ob-
vious application to military objec-
tives and its close relationship to the
expanding conflict in Europe and
Asia. Army participation ceased
almost completely, and the Navy con-
tinued only a relatively small isotope
separation project. Under civilian
guidance, the work on atomic energy
became a major component in the
federal government's greatly broad-
ened program to apply the achieve-
ments of American science to the re-
quirements of modern warfare. Thus,
by early 1942, when the Army
renewed its participation in the devel-
opment of atomic energy, the pro-
gram had evolved into a large
research and development enterprise,
with civilian scientists carrying on
2° Memo, Szilard to Briggs, sub: Possibility of
Large-scale Experiment in Immediate Future, 26
Oct 39, Incl to Szilard Documents, MDR; Supreme
Court of the State of New York, Eldorado Mining and
Refining (formerly Eldorado Gold Mines) vs. Bons
Pregel et al.. Statement to Pregel, 18 Oct 46, Investi-
gation Files, Gen Corresp (Boris Pregel), MDR;
MDH, Bk. 7, Vol. 1, "Feed Materials and Special
Procurement," pp. 3.1-3.3, DASA.
26
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
program activities at a number of
sites across the country.
Establishment of the NDRC and OSRD
The organizational framework of
the American atomic energy program
first began to take shape in the
summer of 1940. In June, a number
of the scientific leaders took the initi-
ative in providing a more effective ad-
ministrative organization. At Leo Szi-
lard's suggestion and with the backing
and approval of Admiral Bowen and
Lyman Briggs, Harold Urey organized
a committee of scientists to advise
Briggs on atomic energy and to study
the question of security. This group,
the Advisory Committtee on Nuclear
Research, met for the first time on
the thirteenth under Urey's chairman-
ship. One of its first actions was to
formulate, with support of American
scientific journals, a policy on secrecy
that eventually halted publication of
scientific papers on atomic energy in
the United States. Thus, a beginning
was made in solving what was to
become another major and persistent
problem — how to maintain a level of
secrecy hitherto never attempted in
so large and diverse a project. ^^
Even as the Advisory Committee on
Nuclear Research was meeting, events
were taking place that would increase
effective leadership and direction for
the entire American scientific war
effort, including the atomic energy
program. Since the invasion of Bel-
gium, Sachs had been urging
Roosevelt to establish a "Scientific
Council of National Defense" to ad-
minister "the testing and execution of
technical projects of utility for nation-
al defense." Another strong advocate
for such a council was Vannevar
Bush, president of the Carnegie Insti-
tution of Washington since 1939. ^^
For some time he had discussed his
ideas with several of the nation's fore-
most scientists and had gained their
support for the project. In addition,
the country's military leaders, includ-
ing both Army Chief of Staff General
George C. Marshall and Chief of
Naval Operations Admiral Harold R.
Stark, strongly favored the proposal.
Consequently on 15 June 1940, the
President established the National De-
fense Research Committee (NDRC),
with Bush as chairman, to direct, co-
ordinate, and carry out a national
program of military research and de-
velopment. Membership was drawn
from the National Academy of Sci-
ences, with Brig. Gen. George V.
Strong, chief of the War Plans Divi-
sion, representing the Army and Rear
Adm. Harold G. Bowen, director of
the Naval Research Laboratory, repre-
senting the Navy.
With establishment of the NDRC,
the President made provision for con-
tinuation of the atomic energy pro-
gram. He asked Vannevar Bush to
reconstitute the original Uranium
Committee as a subcommittee of the
NDRC. The new Committee on Ura-
nium, reporting to Bush and with
Briggs continuing as its chairman, in-
cluded six other scientists but lacked
the service representation that the
21 Szilard Documents, pp. 10-11, MDR; Ltr, Urey
to Sz.laid. 7 Jun 40, Incl to ibid.
22 Sachs History, p. 24, MDR; Ltr, Sachs to
Watson (source of quotation), 15 May 40, Exhibit
15a, ibid. Bush enjoyed a distinguished career in ap-
plied mathematics and electrical engineering at MIT
in the two decades following WW I and achieved a
reputation as a scientific administrator of great skill.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1939-1942
27
original committee had. Briggs was
authorized "to maintain close and
direct contact with those officers of
the Army and Navy most directly in-
terested," but only Ross Gunn of the
Naval Research Laboratory continued
to serve on the new committee. ^^
On 1 July, Briggs reviewed for
Bush the earlier activities of the Com-
mittee on Uranium. At the same time,
he requested the $140,000 that he
and Urey's Advisory Committee had
agreed was necessary for purchasing
uranium metal and pure graphite and
for making further measurements of
the fundamental nuclear constants. At
its first formal meeting the next day,
the NDRC considered Briggs's re-
quest, but its members found them-
selves in a dilemma. The basic NDRC
mission was research and develop-
ment of weapons and equipment with
direct application to the war. NDRC
scientists still regarded the chances of
an atomic weapon as "very remote,"
in Bush's words, and even the possi-
bility of nuclear power for battleships
or submarine propulsion seemed a
distant eventuality at best. Given the
need for funds and trained scientists
in other areas, there was grave doubt
as to the wisdom of allocating money
and energy to "what might eventually
appear to have been wild research."
Yet, there was a danger that German
nuclear research might prove success-
ful. Committee members concluded,
therefore, that prudence demanded
acquisition of knowledge of the fun-
damental physics of atomic energy.
Accordingly, the NDRC approved
Briggs's request in principle and
asked him for further definite propos-
als for "a careful, but not elaborate or
expensive program." ^'*
Promise of NDRC funds opened
the way for the future rapid expan-
sion on atomic research in the United
States. But until these new funds
became available, the atomic program
had to continue to draw upon money
supplied earlier by the Army and the
Navy. Even the $40,000 for the first
NDRC contract for atomic research,
an agreement signed with Columbia
University in early November, came
out of the remaining Army-Navy
funds.
Beginning with the NDRC's allot-
ment on 25 October of the $140,000
requested by Briggs on 1 July, there
followed a series of contracts and
transfer agreements arranging for nu-
clear research by various institutions.
By the spring of 1941, the NDRC had
committed nearly $500,000 for work
at Columbia, Harvard, Princeton, the
University of Minnesota, the Standard
Oil Development Company, Iowa
State College, Cornell, the University
of Chicago, Johns Hopkins, the Car-
negie Institution of Washington, the
University of California (Berkeley),
the University of Virginia, the Bureau
of Standards, and the Department of
Agriculture. While the NDRC's ex-
penditure for atomic energy was small
compared with amounts allotted to
"Quoted words from Ltr, Roosevelt to Briggs,
15 Jun 40, Exhibit 19, Sachs History, MDR. Baxter,
Snenlists Against Time. pp. 12-16; Ltr, Roosevelt to
Bush, 15 Jun 40, HLH; Watson, Chief of Staff, pp.
49-59; Smyth Report, p. 34.
^^ Quoted words from National Defense Research
Committee Report for First Year of Operation, 27
Jun 40-28 Jun 41 (hereafter cited as NDRC Rpt,
1940-41) pp. 34-35, Incl to Ltr, Bush to President,
16 July 41, FDR. Szilard Documents, pp. 10-11,
MDR; Irvin Stewart, Organizing Scientific Research for
War. Science in World War II (Boston: Little, Brown
and Co., 1948), pp. 120-21 and 230; Baxter, Scien-
tists Against Time, pp. 423-24.
28
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
other wartime scientific research, it
represented a significant financial
boost for the American program. As
Alexander Sachs observed a few years
later, the program had become "in-
vested with the importance, the re-
sources and the secrecy available to
the Government of the United States
. . . for the translation of the idea
into a reality. . . ." ^^
While the NDRC was able to focus
the energy and capabilities of civilian
scientists on many aspects of military
technology, it left certain gaps in the
program to mobilize American sci-
ence for war. Hence, at the end of
June 1941, President Roosevelt estab-
lished the Office of Scientific Re-
search and Development (OSRD),
with the NDRC as one of its subordi-
nate agencies. Bush became OSRD
director and James B. Conant, presi-
dent of Harvard University, succeed-
ed Bush as NDRC chairman. In this
reorganization the Committee on
Uranium under Briggs remained
within the NDRC, but it was some-
what enlarged and was renamed the
Section on Uranium. Again it includ-
ed no Army or Navy representatives,
and even Ross Gunn of the Naval Re-
search Laboratory was no longer a
member. ^^
New Advances in Atomic Research,
1940-1941
In mid-July 1941, enthusiastic over
reports that atomic scientists in Amer-
ica and Great Britain were making
^^ Quoted words from Sachs History, p. 27, MDR.
Smyth Report, pp. 34-35; Stewart, Organizing Scientific
Research for War, pp. 121 and 123; Baxter, Scientists
Against Time, p. 424; Testimony of Gunn in Atomic
Energy Hearings on S. Res. 179, pp. 367 and 371.
^^ Stewart, Organizing Scientific Research for War. pp.
34-40 and 121; Smyth Report, p. 35.
significant progress in atomic re-
search, Vannevar Bush reported to
the President that "new knowledge"
made "it probable that the produc-
tion of a super-explosive may not be
as remote a matter as previously ap-
peared." ^^ At Columbia, supported
by investigations at Princeton and the
Universities of Chicago and California
(Berkeley), researchers produced suf-
ficient favorable data on the capture
cross sections for the neutrons of
U-235 and U-238 and on the ab-
sorption qualities of graphite to justi-
fy construction in July 1941 of the
first lattice pile — a large graphite cube
in which containers of uranium oxide
were distributed at equal intervals.
The research results also convinced
many more scientists that a chain re-
action in a uranium-graphite system
eventually would be achieved.
At Berkeley, physicists working with
Ernest O. Lawrence on the bombard-
ment of uranium with neutrons
discovered that the capture of fast
neutrons by U-238 transmuted that
isotope first into element 93 and then
into element 94, which they named
neptunium and plutonium, respective-
ly. After further investigation of these
transuranium elements, neither of
which was then known to exist in
nature, Lawrence's group concluded
that plutonium had the same fission
characteristics as U-235; it could be
split by neutrons and would, in turn,
release more neutrons. U-238, hither-
to regarded as worthless for energy
purposes, was in fact a prime source.
2 7 NDRC Rpt. 1940-41, p. 35, Incl to Ltr. Bush
to President, 16 Jul 41, FDR. Except as indicated,
following section on progress of atomic research in
the United States during 1940-41 based on Smyth
Report, pp. 26, 36, 38-41, 47-49.
THE ARMY AND THE ATOMIC
ENERGY PROGRAM, 1939-1942
29
1 'jpHwpn
JBf\|B
^
n .
H
^^^' / -^^^^^^L •M^^
M^ • 2_i ^^g^ .^iV^i^M
Ddl
^^^^ '^^^^^^^^^^^^^^^ IB^^^^^^^I
^^j/Sj^^
1
^^9k
h^^H
^^^^^^^P^HjI^^^^^^^^Hfv'^
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^^^^^^^^B^^^^^^^^^^i
^^■991^^1
1
Ernest O. Lawrence, Arthur H. Compton, Vannevar Bush, and James B.
CoNANT (left to right), four of the Manhattan Project 5 scientific leaders (1940 photograph)
Furthermore, as there was reason to
believe that chemical separation of
plutonium from uranium might prove
more practicable than isotopic separa-
tion of U-235 from U-238, chances
that an atomic bomb based on a fast-
neutron chain reaction could be built
were tremendously increased.
American atomic scientists learned
of encouraging British developments
on isotopic separation by gaseous dif-
fusion and on heavy water as a mod-
erator in a slow-neutron chain reac-
tion system through a scientific infor-
mation exchange program, begun in
the fall of 1940. With the support of
the War and Navy Departments,
NDRC members conferred informally
with British scientific representatives,
both in the United States and in Eng-
land, achieving a limited exchange of
data about the progress of nuclear re-
search in each country. ^^
28 See Ch. X for discussion of a formal program
of information interchange with Great Britain on
nuclear matters. Margaret Gowing, Britain and Atomic
Energy, 1939-1945 (London: Macmillan and Co., St.
Martin's Press, 1946), pp. 115-26; J. G. Crowther
and R. Whiddington, Science at War (London: His
Majesty's Stationery Office, 1947), pp. 143-46; H.
Duncan Hall and C. C. Wrigley, Studies of Ch'erseas
Supply. History of the Second World War (London:
His Majesty's Stationery Office, 1956). pp. 358-85
and 405-13; Sir George Thomson, "Anglo-U.S. Co-
operation on Atomic Energy," American Snenttst 41
(Jan 53): 78.
30
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
In the summer of 1941, a special
reviewing committee of the National
Academy of Sciences supported
Bush's optimism. The committee, es-
tablished at Briggs's suggestion that
an impartial evaluation of the atomic
program was needed, first met in May
under the chairmanship of Arthur H.
Compton, head of the physics depart-
ment and dean of the Division of
Physical Sciences at the University of
Chicago. The committee's initial
report was buttressed by supporting
remarks from Briggs, and on 18 July
the NDRC approved contracts and
transfers amounting to nearly
$400,000 for chain reaction, nuclear
power, and isotope separation re-
search. While the NDRC remained
cautious in its estimate of whether
atomic energy could be harnessed in
time to affect the outcome of the war,
it recognized that continued progress
in nuclear research would eventually
require establishment of a long-range
program so vast and expensive that in
wartime only the Army or Navy could
carry it out.^^
The pressure of an all-out attack on
the problem of atomic energy grew
rapidly. At the University of Califor-
nia, Lawrence was more and more
convinced of the feasibility of using
plutonium to make an atomic bomb
and he communicated his enthusiasm
to both Compton and Conant. Comp-
ton was especially interested and he,
in turn, talked with other nuclear re-
searchers. From Urey and physicist
John Dunning, who also was on the staff
at Columbia, he learned of progress on
isotope separation, and from Fermi
he received encouraging news of the
results of experiments with the lattice
pile. Most of the scientists now in-
volved felt that the atomic energy
program should be pushed, and in
mid-October, at Conant's suggestion,
Compton reconvened his reviewing
committee, now somewhat enlarged,
to prepare another report. ^°
On 3 October, Bush received the
first official copy of a British review of
atomic energy that had been complet-
ed in mid-July, but he was not yet at
liberty to disclose its contents to the
NDRC. The British scientists had op-
timistically concluded that a uranium
bomb could be built with an explosive
power of 1,800 tons of TNT. They in-
dicated a rough idea of its critical
mass and possible methods of assem-
bly and fusing. They thought the gas-
eous diffusion method offered the
best answer to the problem of separat-
ing a sufficient amount of U-235 and
the uranium-heavy water system gave
promise as a means for producing
power and plutonium.^ ^
Top Policy Group: Preparing for
Army Take Over
Increasing conviction that atomic
bombs were feasible prompted Bush
to take immediate steps to obtain the
high-level policy decisions he had
foreseen would be necessary to assure
aggressive pursuit of the uranium
program. On 9 October 1941, almost
^^ Baxter, Scientists Against Time. pp. 424-26;
Compton, Atomic Quest, pp. 45-49; Smyth Report, pp.
35 and 49; Stewart, Organizing Scientific Research for
War, p. 121; Hewlett and Anderson, New World, pp.
36-43.
30 Compton, Atomic Quest, pp. 6-9 and 53-56;
Smyth Report, p. 36; Hewlett and Anderson, New
World, pp. 45-49.
3» Smyth Report, p. 36; Crowther and Whidding-
ton, Science at War, pp. 144-45; Thomson, "Anglo-
U.S. Cooperation," pp. 78-79; Cowing, Bnlain and
Atomic Energy, pp. 83-86 and 116-17.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1939-1942
31
two years to the day on which Alexan-
der Sachs first informed the President
about atomic energy, Bush had a long
conversation with Roosevelt and Vice
President Henry A. Wallace. In late
July, Bush and Wallace had discussed
the progress of the American pro-
gram; now, supported with more con-
crete evidence of possible success at
hand, they were considering what the
President could do to further develop
the program. The OSRD director out-
lined the current status of research in
both the United States and Great
Britain, pointing up the general opti-
mism of the scientists in both coun-
tries but, at the same time, emphasiz-
ing that their predictions could not be
guaranteed. He indicated, too, that
much work would be required before
success could be anticipated.
President Roosevelt agreed that the
atomic energy program must be pro-
vided with a better organization and
more funds and that arrangements
should be made for a complete inter-
change of information with the Brit-
ish. He directed formation of what
was informally designated the Top
Policy Group, to be headed by him-
self— although he never actually par-
ticipated in its proceedings — and to
consist of Vice President Henry A.
Wallace, Secretary of War Henry L.
Stimson, Army Chief of Staff General
George C. Marshall, Vannevar Bush,
and James B. Conant.^^ Thus the
President took the first step in imple-
menting a maximum effort to develop
an atomic bomb as soon as possible.
He also decided that the Army, and
not the Navy, would be given the pri-
mary responsibility for attaining this
goal.
The NDRC had concluded that no
private institution or relevant govern-
ment agency had the means or per-
sonnel to carry out the extraordinarily
large tasks of plant construction and
administering development of a nu-
clear weapon. The choice, then, was
the Army or the Navy. When
Roosevelt appointed Secretary Stim-
son and General Marshall to the Top
Policy Group that had no naval rep-
resentation, he decided in effect that
the Army was to manage the job.
Why had the President selected the
Army when the Navy had exhibited
much greater interest in nuclear re-
search? Indications are that Bush and
his associates had decided that the
Army was the more appropriate
choice for the project. The end prod-
uct was to be a bomb, presumably de-
livered by an Army bomber. Also the
Army, judged on the basis of its past
experience and its organization, ap-
peared better fitted to undertake the
vast construction program. ^^
The President also had agreed to
establish an effective exchange of in-
formation with the British. On 1 1 Oc-
tober he communicated with Prime
Minister Winston S. Churchill, sug-
gesting that they correspond or talk
about atomic developments, inaugu-
^^ Baxter, Scientists Against Time, p. 427; Smyth
Report, p. 37; Ltr, Bush to President, 9 Mar 42, HB
Files, Fldr 58, MDR.
^^ Col. James C. Marshall, who would head the
new Army engineer district that would administer
the atomic bomb program, reported that Bush, in
the fall of 1942, told him and other Army officers
that the Navy "had been left out of the present
project at the explicit direction of the President."
See Marshall Diary, 21 Sep 42, MDR. The Navy,
nevertheless, would continue to support research al-
readv under way on liquid thermal diffusion. See
Ch. VIII.
32
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Secretary of War Henry L.Stimson
rating a period of regular interchange
between the two countries.^'*
The President's efforts to strength-
en the American atomic energy pro-
gram were reinforced a few weeks
later by Compton's National Academy
reviewing committee. On 6 Novem-
ber, the committee issued another re-
port that, while not as optimistic as the
earlier British study, nevertheless con-
stituted a strong endorsement of an
expanded atomic bomb program. Be-
cause Compton's group had prepared
its report without access to the British
conclusions — Bush up to now had
^^Ltr. Roosevelt to Churchill. 11 Oct 41, FDR;
Churchill's reply quoted in Msg, Prime Minister to
Harry L. Hopkins, 27 Feb 43, HLH; Crovvlher and
Whiddington, Science o I l\'ar\ p. 146; Smyth Report, p.
37. For detailed discussion of efforts to establish ef-
fective interchange in late 1941 see Ch. X.
been bound not to disclose them — its
findings consisted of both a further
verification of the British views and an
independent recommendation.
The committee report stated that
"within a few years . . . military supe-
riority" might be determined by
U-235 bombs and that building these
bombs seemed "as sure as any un-
tried prediction based upon theory
and experiment can be." The amount
of U-235 needed for each bomb
would be between 2 and 100 kilo-
grams, producing an explosive energy
per kilogram of U-235 equal to that
of about 300 tons of TNT and a de-
structive effect equivalent to about 30
tons of TNT. Atomic bombs could
thus be of "decisive importance" in
defeating Germany and, based on an
estimate that military and industrial
targets in Germany could be devastat-
ed with 500,000 tons of TNT bombs,
from 1 to 10 tons of U-235 would be
needed to do the same job. This
much U-235 could be obtained, con-
tinued the report, by one or more
methods of isotope separation, of
which the gaseous diffusion and cen-
trifuge methods appeared to be fur-
thest along in development. In ac-
cordance with instructions from Bush,
the committee did not discuss pluto-
nium and it purposely played down
the expense of producing U-235
bombs to avoid arousing government
fears of excessive costs. "If all possi-
ble effort is spent on the program,"
the report concluded, "fission
bombs" might "be available in signifi-
cant quantity within three or four
years." ^^
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1939-1942
33
This prediction came at a time
when only infinitesimal amounts of
plutonium had been produced and
when no appreciable quantity of
U-235 had been separated from
U-238, no large amounts of uranium
metal or moderators produced, and,
as yet, no chain reaction achieved.
Nevertheless, the committee report,
as had its British counterpart, reflect-
ed the substantial progress that had
been made in research. Although
some scientists were still no more
convinced that atomic weapons were
imminently possible than they had
been a year earlier, the threat of
American involvement in war now
seemed far stronger, with the result
that large expenditures of money and
effort were no longer seen as ex-
travagances but rather as necessary
precautions.
Bush's first action after receiving
Compton's committee report was to
show it to Secretary of War Stimson.
Whether the 6 November meeting
was Stimson's first word of his ap-
pointment to the Top Policy Group is
not clear, but there is no doubt about
his reaction to the awesome possibili-
ties of an atomic bomb. "A most ter-
rible thing," he called it, sensing the
grave responsibility falling upon those
who would unleash the power of such
^^Bolh quotations from Rpt, Academy Committee
on Uranium, sub: Rpt to President of the Natl Acad-
emy of Sciences, 6 Nov 41, OSRD. Portions of the
report are reproduced in the following sources:
Smyth Report, pp. 49-52; Smyth Ms (containing
some material not included in final version). Admin
Files, Gen Corresp, 319.1 (Smyth Rpt), MDR;
Compton, Atomic Quest, pp. 56-59; Baxter, Scientists
Against Time. pp. 426-28.
a devastating weapon.^®
During the next few weeks, Bush
apparently reviewed the entire Ameri-
can atomic energy program and, in
compliance with the President's in-
structions, devised a plan for an ad-
ministrative reorganization designed
to expedite efforts "in every possible
way." ^' Finally, on 27 November,
Bush forwarded the report of Comp-
tion's reviewing committee to Roose-
velt and, presumably, his own rec-
ommendations for the new organi-
zation. The NDRC endorsed these
recommendations on the twenty-
eighth. Then on 6 December 1941,
the day before the Japanese attack on
Pearl Harbor, Conant — speaking for
Bush — announced the details of the
new organization to those persons
who would now join together in a
maximum effort to develop an atomic
bomb.
Under the new organization, the
atomic energy program was divorced
from the NDRC and placed under the
immediate supervision of Bush as the
OSRD director. Bush reported direct-
ly to the President, at the same time
keeping Vice President Wallace and
Secretary Stimson fully informed. The
scientific group under Bush was now
called the OSRD S-1 Section, drop-
ping the word uranium for security
reasons. Its function was to recom-
mend and coordinate action on nucle-
ar research, ensure that authorized as-
signments were carried out, and,
within six months, prepare a final
^® Diary of Henry L. Stimson (hereafter cited as
Stimson Diary), 6 Nov 41, HLS; Henry L. Stimson,
"The Decision To Use the Bomb," Harper's 194
(Feb 47): 98-99; Compton, Atomic Quest, p. 59.
"Ltr, Bush to President, 9 Mar 42, MDR.
34
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
report on the feasibility of building
atomic bombs.
Conant, acting as Bush's represent-
ative, had oversight of the whole pro-
gram. Briggs stayed on as chairman
of the S-1 Section, with Dean Pegram
of Columbia as vice chairman and a
number of outstanding scientists serv-
ing as consultants. In addition, three
program chiefs, each a Nobel Prize
winner, were in charge of three dis-
tinct programs in physics. Arthur H.
Compton of the University of Chicago
headed the program of basic physics
studies and measurements of nuclear
properties pertinent to the chain reac-
tion. His program also included ex-
ploring the problem of plutonium
production by means of the con-
trolled fissioning of uranium. Ernest
O. Lawrence of the University of Cali-
fornia, Berkeley, had responsibility
for producing the first small samples
of fissionable elements, isotope sepa-
ration by the electromagnetic method,
and experimental work on the prop-
erties of plutonium. Finally, Harold
C. Urey of Columbia University had
charge of isotope separation by the
diffusion and centrifuge methods, as
well as research on heavy water
production.
To supervise engineering procure-
ment and production plant construc-
tion— activities that Bush and his as-
sociates knew must shortly be turned
over to the Army — the OSRD director
set up a planning board, headed by
Eger V. Murphree, vice president of
the Standard Oil Development Com-
pany, an affiliate of Standard Oil
Company (New Jersey). The OSRD
would enter into and finance all con-
tracts negotiated in support of the re-
organized atomic energy program.
The board would make recommenda-
tions to Bush concerning those con-
tracts for engineering, for develop-
ment of the diffusion and centrifuge
processes, and for the heavy water
program. Briggs and Conant, with the
interested program chiefs, would rec-
ommend all other contracts. When
the Army took over administration of
much of the atomic energy program,
many OSRD contracts had to be
renegotiated.^^
America's entry into World War II
hastened the move for the Army to
take over the primary direction and
control of the bomb development
project. Concrete steps to bring about
this change came up for discussion at
a meeting of the Top Policy Group
called by Vice President Wallace on
16 December. In attendance were
Secretary Stimson, Bush, Wallace,
and, in addition, Harold D. Smith, di-
rector of the Budget Bureau. Conant
and General Marshall were unable to
attend. According to Secretary Stim-
son, that meeting was significant. The
group discussed, he recorded, "some
of the new inventions, many of them
diabolical, that are coming out of the
Scientific Research Commission"
[NDRC] and "decided to go ahead
with certain experiments." Bush him-
self noted the group's strong opinion
"that OSRD should press as fast as
possible on the construction of pilot
plants." ^^ He estimated this aspect of
^*Ibid. and Incl; Smyth Report, pp. 53-55; Baxter,
Snentuts Against Time. p. 428; Compton, Atomic Qimt,
pp. 62-63 and 68-78; Stewart, Organizing Scientific
Research for War, pp. 121-22; Hewlett and Anderson,
Xeu' World, pp. 40-51; Charles Sterling Popple,
Standard Oil Company (Xew Jersey) in World War II
(New York: Standard Oil Co., 1952), p. 295.
^^ Stimson Diary, 16 Dec 41, HLS; Bush quoted in
Smyth Report, p. 55.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1939-1942
35
the work would cost $4 to $5 million
and stated that the Army should take
over when full-scale construction
began, presumably when the pilot
plants were ready. He recommended
that a suitably trained Army officer
should familiarize himself with the
general nature of the program.
The Top Policy Group then ap-
proved Bush's reorganization of the
atomic energy program and his plans
and recommendations for action.
They also agreed that the internation-
al aspects were clearly a presidential
responsibility, with Bush's function
limited to liaison solely on technical
matters. *°
Progress in Research and Development:
The Xuclear Steeplechase
Two days later, on 18 December,
the new OSRD S-1 Section held its
first meeting, a session "pervaded by
an atmosphere of enthusiasm and ur-
gency." *^ Conant explained again
the decision to proceed with the de-
velopment of the bomb and stressed
the necessity of a maximum effort.
His words were seconded by Urey
and Pegram, recently returned from
England, who described British
progress on the gaseous diffusion
method of isotope separation and in
experiments with heavy water. They
also emphasized that Britain greatly
feared Germany might produce
atomic bombs before the Allies. Prob-
ably the most enthusiastic presenta-
tion was Lawrence's description of his
success in testing the electromagnetic
method as a possible process for sep-
arating uranium isotopes. As a
member of Compton's reviewing
committee the previous summer, Law-
rence had become convinced of the
great potentialities of this method in
spite of the widely prevailing belief
among scientists that the so-called
space charge limitation — mutual re-
pulsion of ions, making sharp focus of
a beam of particles impossible — made
it impractical for large-scale separa-
tion. Lawrence asserted that experi-
ments at his Berkeley-based Radiation
Laboratory with the mass spectro-
graph proved that the technical diffi-
culties that tended to reduce the effi-
ciency of the electromagnetic process
could be overcome. ^2
A 184-inch cyclotron magnet,
nearly five times wider than the 37-
inch magnet used for previous experi-
ments, had been under construction
at the University of California, Berke-
ley, funded by the Rockefeller Foun-
dation. Work had stopped because of
the war, but now an extra appropria-
tion from the foundation permitted
Lawrence to complete the project by
the end of May 1942, providing a
means, as Lawrence wrote later, that
"made it seem possible that we might
be able to get somewhere ... in time
to be of value in this war." '*^
With the Radiation Laboratory re-
searchers concentrating increasingly
on electromagnetic separation, most
*° Smvth Report, p 55; Ltr, Bush to President,
9 Mar 42, MDR; Hewleii and Anderson, Xew IVorld.
pp. 51-52.
*' Smvth Report, p. 55.
*^ Rpt, W. M Brobeck and W. B. Reynolds, sub:
On Future Development of Electromagnetic System
of Tube Alloys Isotope .Separation, 15 Jan 45, OCG
Files, Gen Corresp, Groves Files, Fldr 10, MDR;
Compton, Atomic Quest, pp. 76-77; Hewlett and An-
derson, \eu> Worlri, pp. 56-57.
■•^ I.tr, Lawrence to Warren Weaver (Natural Sci-
ences Div Dir, Rockefeller Foundation), 20 Aug 45,
Admin Files, Gen Corresp, 201 (W), MDR; Smvth
Report, pp. 46, 49, 55, 136-40; Compton. Atomic
Quest, pp. 73-74.
36
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
of the work on plutonium was left to
Compton's University of Chicago
group that was investigating the feasi-
bility of achieving a chain reaction. In
January 1941, Compton decided to
move the scientists working under his
supervision at Columbia and Prince-
ton to the University of Chicago. By
early February, he concentrated the
various research and development ac-
tivities under what was called, for se-
curity reasons, the Metallurgical Lab-
oratory. Compton's group devoted
itself henceforth to three main tasks:
achievement of a chain reaction; study
of the chemistry of plutonium, includ-
ing development of a means for sepa-
rating it from uranium; and the
design of plutonium-producing piles.
Because these tasks depended upon
an adequate supply of uranium and
graphite, representatives of the Metal-
lurgical Laboratory also actively sup-
ported the S-1 Section's planning
board in the procurement program,
contributing much to its success.**
At the same time, research on the
gaseous diffusion process and on the
production of heavy water went for-
ward under Harold Urey's direction
at Columbia, and investigations on
the centrifuge method of separation
progressed under the general supervi-
sion of Eger Murphree at the Univer-
sity of Virginia, where physicist Jesse
W. Beams directed the program, and
at the Standard Oil Development
Company in New Jersey, where re-
search begun earlier at Columbia was
continued.
Work was also proceeding on still
another separation method, liquid
thermal diffusion, based on the tend-
ency of one of two isotopes in a fluid
to concentrate near the hotter of two
opposing surfaces. Philip H. Abelson
had started research on this process
at the Carnegie Institution but later
moved to facilities at the Naval Re-
search Laboratory. While develop-
ment of the thermal diffusion process
was not a part of the OSRD program,
it would prove highly useful to the
atomic project at a later date.*^
Thus the OSRD was at work simul-
taneously on five methods of pro-
ducing fissionable materials — three
isotope separation processes (electro-
magnetic, gaseous diffusion, and
centrifuge) for producing U-235 and
two pile processes (uranium-graphite
and uranium-heavy water) for manu-
facturing plutonium — projects Conant
referred to as five "horses" in a
race.*^ Choosing a favorite and pre-
dicting an outcome, however, were
almost impossible because any one of
the horses might encounter insur-
mountable obstacles. Although con-
centrating all resources on the most
promising horse would have been
more efficient and economic, playing
this odd just might have enabled Ger-
many to be the first to build an
atomic bomb.
In support of this nuclear steeple-
chase, the OSRD, by early February
1942, had entered into ten contracts
with twelve institutions totaling more
than $1 million, figures that roughly
doubled in the next month. On the
*'' Smyth Report, pp. 56 and 63-65; Compton,
Atomic Quest, pp. 80-98.
*^ Smvth Report, pp. 47 and 56; Testimony of
Gunn in Atomic Energy Heanngs on S. Res. 1 79, pp.
367-68.
*^ In his account of the development of aUernate
methods for producing fissionable materials in early
1942, Compton counted only four "horses" in the
race, perceiving the two pile processes as a single
method. See Atomic Quest, pp. 77-78.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1939-1942
37
twentieth, Conant recommended that
all five methods "be pushed vigorous-
ly" until 1 July, by which time he
hoped many of the contracts could be
dropped or revised in accordance
with whatever progress had been
made. Indeed, Conant continued, if
by then the electromagnetic method
of separation demonstrated a clear ca-
pability "of producing grams per
day," work on other methods of pro-
ducing fissionable materials might be
dropped or at least continued at a
slower pace. Furthermore, even if all
five horses had to be kept running "at
full speed down the course" until the
beginning of 1943, the OSRD re-
search program might still be com-
pleted for between $10 and $17
million.*^
The "intense scientific research and
engineering planning now underway"
was the subject of a guardedly opti-
mistic progress report that Bush sub-
mitted to the President on 9 March.
"The possibility of actual production
appears more certain," he wrote, but
"the way to full accomplishment is
still exceedingly difficult." A full-scale
effort might achieve completion of
the project in 1944, or possibly six
months sooner, and success for either
the Allies or the enemy could "be de-
termining in the war effort." Bush
pointed out that the work was "rapid-
ly approaching the pilot plant stage,"
with selection of the best methods of
production not too far off. The
summer of 1942, he believed, would
"find the matter ready to turn over to
Army control, for actual production
plant construction." A further reason
for transferring "the whole matter . . .
to the War Department," Bush
added, was the necessity for institut-
ing tight security measures once
actual production began.*®
With the Army's entrance into the
atomic energy program only a few
months off, it was time to assign a
suitable officer to follow nuclear de-
velopments. For this mission. General
Marshall personally chose Brig. Gen.
Wilhelm D. Styer, chief of staff of the
Services of Supply (SOS). A graduate
of the U.S. Military Academy, with an
additional degree in civil engineering
from Massachusetts Institute of Tech-
nology and two decades of experience
as a Corps of Engineers officer super-
vising various kinds of construction
projects, Styer was well qualified to
lay the groundwork for Army partici-
pation in the atomic energy program.
He immediately began an intensive
study of the project, in close coordi-
nation with Bush and the S-1 Section.
Despite the demands of his SOS
duties, from this point until his depar-
ture for an overseas assignment late
in the war. General Styer would play
an important part in the Army's effort
to produce an atomic bomb.*^
■'■' Conant's words as quoted in Baxter, Scientists
Against Time. p. 433; Smyth Report, p. 56; Rpt to
President, sub: Status of Tube Alloys Development,
9 Mar 42, Incl to Ltr, Bush to President, same date,
MDR.
■»« Ltr, Bush to President, 9 Mar 42, MDR.
■»« 1st Ind, Stver to Chief of Mil Hist, 15 Aug 61,
to Ltr, Chief of Mil Hist to Styer, 17 Jul 61, CMH;
Memo, Bush and Conant to Wallace, Stimson, and
Marshall, sub: Atomic Fission Bombs, 13 Jun 42,
Incl to Ltr, Bush to President, 17 Jun 42, HB Files,
Fldr 6, MDR (cf. Ltr. Bush to President, 9 Mar 42,
and Incl, MDR). On Styer, see John D. Millett, The
Organization and Role of the Ar7ny Serince Forces. U.S.
Armv in World War II (Washington, D.C.: Govern-
ment Printing Office, 1954). pp. 5, 32. 369. and
passim; Cullum, Biographical Register. 6B:1806,
7:1121-22.8:306,9:207.
38
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Meanwhile, the five horses were in
the running, four of them neck and
neck, with a fifth one now bidding to
join the race. This was the alternate
method of producing plutonium by
using heavy water instead of graphite
as the moderator in a chain reaction
pile, a process strongly championed
by Urey. As work approached the
pilot plant stage, the need to concen-
trate on one or more of these horses
was becoming increasingly apparent.
To conserve time, design and con-
struction of actual production plants
should begin even before the pilot
plants were finished. However,
Conant believed there was "a desper-
ate need for speed" to build the
bombs before the Germans could and
he only solution was to go ahead on
all five.50
On 23 May, S-1 Section Chairman
Lyman Briggs met with Compton,
Lawrence, LIrey, and Murphree to
make final recommendations on the
program. In a report submitted to
Bush two days later, the group con-
cluded that practical atomic bombs of
either U-235 or plutonium, with an
energy release equal to that of several
thousand tons of TNT, were definite-
ly feasible. Underestimating the
amount of fissionable material later
found necessary for each bomb, as
well as the time required for develop-
ment and construction, they believed
the bombs would be available in small
quantities by about July 1944. They
recommended funding of all five
methods, although, for reasons ad-
vanced primarily by Compton, they
gave the uranium-graphite pile a defi-
nite priority over the heavy water pile.
They also proposed a pilot diffusion
plant and preparation of complete en-
gineering designs for a full-scale dif-
fusion installation. They advised con-
structing a centrifuge plant by Janu-
ary 1944, an electromagnetic plant by
late 1943, a plutonium-producing
atomic power installation by early
1944, and, as an auxiliary to the
latter, heavy water plants by May
1943.
Bush, Conant, and General Styer
approved these recommendations
and, on 13 June, Bush and Conant
submitted them to the Top Policy
Group with detailed plans to expand
the atomic energy program. They un-
derlined the danger of German suc-
cess in building an atomic bomb and
endorsed the proposal to continue
work on all major methods of produc-
tion. At the same time, they warned
that such a course would interfere
with other military research and
called for careful judgment, when fur-
ther study made it possible, to
achieve a better balance.^ ^
Importantly, Bush and Conant rec-
ommended that construction of the
separation plants and development of
the power project be turned over to
the Army, specifically "to be in [the]
charge of a qualified officer designat-
ed by the Chief of Engineers and re-
porting to him. . . ." They also sug-
gested that this officer be assisted on
a full-time basis by leading civilian
scientists and engineers, "preferably
in the status of officers." ^^ Funds for
Quoted in Baxter, Scienlists Agonist Time. p. 434.
^1 Ibid., pp. 434-35; Memo, Bush and Conant to
Wallace, Stimson, and Marshall, 13 Jun 42, Incl to
Ltr, Bush to President, 17 Jun 42, MDR; Smvth
Report, pp. 56-57; Compton, Atomic Qimt. pp. 98-
103.
^2 Memo, Bush and Conant to Wallace, Stimson,
and Marshall. 13 Jun 42, Incl to Ltr, Bush to Presi-
dent, 1 7 Jun 42, MDR.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1939-1942
39
this work — $54 million in fiscal year
1943 — should be made available to
the Engineers chief who, to avoid
delay, should be authorized to spend
or overobligate any money under his
control with the understanding that
he would be reimbursed later. After
consulting with the S-1 Section's
planning board, the Engineers chief
should also begin immediately to let
contracts for the detailed design of all
plants.
Under the Bush-Conant proposals,
the OSRD would continue to direct
and control research and develop-
ment, with $31 million directly
available for this purpose and an ad-
ditional $5 million held in reserve for
contingencies in the next fiscal year.
There would be frequent meetings
between representatives of the OSRD
and the Corps of Engineers in order
to coordinate and report on research,
development, and construction. Re-
search and development on the actual
military uses of atomic energy would
be under the Joint Committee on
New Weapons and Equipment of the
Joint Chiefs of Staff. In addition.
Bush and Conant suggested that sites
be selected, priorities established, and
close security regulations imposed on
the entire project.
With the approval of Vice President
Wallace, Secretary Stimson, and Gen-
eral Marshall, Bush forwarded the
proposed program to the President
on 17 June 1942. "If you also ap-
prove," he wrote, "we will proceed
along these lines immediately." The
President's initials — "OK FDR" —
were affixed that day, signaling the
decision to go ahead. ^^
The United States was now firmly
and fully committed to an all-out
effort to build an atomic bomb. From
initial skepticism and only casual in-
terest, the attitude of the government
had changed gradually to one of
active support. The ultimate decision
to build the bomb was a presidential
one and, as such, had been made at
the meeting with Wallace and Bush
on 9 October 1941. But laying the
groundwork for that far-reaching de-
cision were the intermediate steps
taken by Bush and his scientific asso-
ciates in early December 1941, rein-
forced by Stimson and Wallace later
that month, and confirmed by mem-
bers of the S-1 Section and the Top
Policy Group in the spring of 1942.
As for the Army, the President's deci-
sion on 17 June brought it back into
the atomic bomb program, this time
to participate on a far broader scale.
Within hours of that decision, the
Army designated Col. James C. Mar-
shall, who had nearly twenty-five
years as a regular in the Corps of
Engineers, to begin the task of orga-
nizing and carrying out its vast new
assignment as administrator of all
construction work for that program.
>3 Ltr, Bush to President, 17 Jun 42, MDR.
CHAPTER II
Establishing the Manhattan District
Undeterred bv the unusual nature
of the atomic energy program, the
Army Corps of Engineers in June
1942 prepared to carry out its new
wartime construction assignment.
After his initial conference with Brig.
Gen. Wilhelm D. Styer late in the
afternoon of the eighteenth, Col.
James C. Marshall experienced a cer-
tain restlessness as he tried to com-
prehend the scope of the new task at
hand. The next day, he received some
of the answers to his many questions
when Styer took him to the Office of
Scientific Research and Development
to call on V'annevar Bush, fhe OSRD
director gave the two officers several
documents, among them a copy of
the program for continued develop-
ment of atomic energy that President
Roosevelt had approved on the seven-
teenth. From these papers Marshall
learned that the Army was now
charged with "all large-scale as-
pects," ^ as Bush put it, of the atomic
energy program, with the OSRD re-
taining responsibility for scientific re-
search and pilot plant experimenta-
tion. The Army's mission included
building both pilot and full-scale
plants for producing fissionable mate-
rials to be used in the manufacture of
atomic bombs, letting contracts for
these plants and others to be under
OSRD direction, and extensive site
selection, acquisition, and develop-
ment— all to be carried out in close
coordination with the OSRD.
That afternoon, again in General
Styer's office. Colonel Marshall re-
ceived formal orders on the Army's
phase of the atomic energv project.
On the covering letter of the ap-
proved program, Styer wrote the fol-
lowing endorsement to Marshall:
"This is referred to you for informa-
tion and appropriate action in accord-
ance with our discussion of this sub-
ject with Dr. Bush this morning." ^
This simple statement constituted the
basic directive to the C>orps of Engi-
neers for its work on development of
the atomic bomb. Styer also empha-
sized that the orders had come direct-
ly from the War Deparment's Services
of Supply (SOS) and that Colonel
Marshall would furnish all details of
the new project to the Engineers
chief, Maj. Gen. Eugene Reybold.
hi the weeks that followed the hur-
ried orientation of the past two days,
Colonel Marshall became more famil-
iar with the current status of the pro-
' Memo. Bush K) (onaiii. sub:
All<)%s| I'lf^m, 19 |un 42. HB Fik-s,
luhcallov 11
Fl(ir (i. MDR
2 Isi lud, StNC-l
Bush lo SIMM, sa
Marshall. 19 |un 42, lo I.ir,
date, HB Flics, FIdi (., MDR.
ESIABLISHING IHE MANHAIIAN DISTRICT
41
Brig. Gen. W ilhelm D. St\er
{1941 photograph)
gram and what the Army's role was to
be in the months ahead. He was to
have broad authority to use engineer
facilities, choose personnel, and take
whatever steps were necessary to
carry out his assignment. Marshall
soon realized, however, that he was
going to need all the assistance he
could muster in order to have any
hope of success in achieving his
mission.^
Organizing the District
1 he Engineers chief normally over-
saw construction projects through an
engineer district, the basic unit of the
engineer field organization for super-
vising construction work. The district
engineer customarily was responsible
to a division engineer, who headed
one of the eleven geographical divi-
sions in the United States (which, in
1942, constituted regional administra-
tive headquarters of the Engineer De-
partment of the Corps). Because of
the special character, scope, and im-
portance of Colonel Marshall's mis-
sion, however, the new district to
oversee atomic energy construction
would be directly subordinate to the
Engineers chief and, unrestricted by
geographical limitations, its field of
operations would extend into other
districts and divisions. Furthermore,
although designated a district engi-
neer, Marshall was to have all the au-
thority, responsibility, and independ-
ence regularly granted to a division
engineer. Indeed, in many respects,
he was to have far more.^
While Marshall's responsibility was
to the Engineers chief, in practice he
worked with Reybold's assistant. Brig.
Gen. Thomas M. Robins, who was in
charge of construction, and particu-
larly with his deputy. Col. Leslie R.
Groves. During the summer of 1942,
Robins and Groves reviewed Mar-
shall's plans and furnished him with
the support and assistance necessary
to get the project started. Appropri-
ate agencies of the chief's staff also
cooperated fully with Marshall, who
was able to make good use of other
engineer facilities and War Depart-
ment assistance. On all important de-
3 Marshall Diarv, 19 jun 42, OCCi Files. Gen Cor-
resp, Ciroves Files, Misc Recs Sec, behind Fldi 5,
MDR,
"AR 100-20, l« Sep 42; Paul W. Ihonipson,
What You Should Know About the Army Engineers (New
York. W. W. Norton and Co., 1942), pp. 194-96.
Subsection based primarily on Marshall I)iar\, MDR,
and Groves, Xow It Can Be Told, pp. 11-18.
42
jftmKKi^^
^^ ^>^
Brig. Gen. James C. Marshall
( 19-f6 photograph)
cisions, Marshall consulted with Gen-
erals Reybold and Styer; the latter, in
addition to his many duties as SOS
chief of staff, kept well abreast of cur-
rent nuclear developments. To en-
force strict secrecy, Army Chief of
Staff General George C. Marshall
originally had forbidden Styer to
reveal to the SOS commander, Lt.
Gen. Brehon B. Somervell, anything
about the atomic energy program. In
June, however, with the entrance of
the Army into an active role in the
project. General Marshall directed
Styer to brief Somervell and to enlist
his support.^
MANHATTAN: THE ARMY AND IHE AI OMIC: BOMB
In late June, Colonel Marshall
opened a liaison office in Washing-
ton, D.C., in the New War Depart-
ment Building at 21st Street and Vir-
ginia Avenue, NW. At the same time,
he set up temporary district head-
quarters at 270 Broadway in New-
York, where he had ready access not
only to the colocated administrative
facilities of the Engineer Depart-
ment's North Atlantic Division but
also to the Manhattan office of the
Stone and Webster Engineering Cor-
poration, soon to become a major
contractor for the atomic project. To
staff the district. Colonel Marshall re-
ceived authorization from the Engi-
neers chief to draw on officers and ci-
vilians who had served under him in
the Syracuse District, among them Lt.
Col. Kenneth D. Nichols, whom he
appointed assistant district engineer.
The Syracuse District recently had
completed the major part of its war-
time construction program and, as the
volume of work decreased during the
summer, Marshall was able to draw
more and more personnel from his
former command. Soon over a dozen
men had transferred to the new dis-
trict. Several who were civilians at the
time subsequently received reserve
commissions and went on active duty.
To provide still more officers. Gener-
al Robins directed other districts to
give Marshall a priority on any sur-
plus personnel they might have.®
^ Styer's recollection is that he was not aiithoii/ed
to bring in Somervell until September, but contem-
porary evidence indicates Somervell was participat-
ing in late June. 1st Ind, Stver to Chief of Mil Hist,
\r> Aug (il, to I.tr. Chief of Mil Hist to Stver, 17 Jul
61, CMH (cf. Marshall Diary, 26 Jun and 10 Jul 42,
MDR). On the I-Lngineers organization in earlv 1942
see Blanche D. C-oll, Jean E. Keith, and Herbert H.
Rosenthal, Thf Corps oj Engineers: Troops and Equip-
ment. r.S. Arniv in World War II (Washington, D.C.:
Government Printing Office, 1958), pp. 1,S2-:U).
^ Details on the engagement of Stone and Web-
ster as a major contractor for the atomic project are
ESIABLISHINC; IHK MANHA 1 IAN DIS IRId
43
Col. Kenneth D. Nichols { 1945 photograph}
Engineer districts normally took
their names from the city where they
were located, bnt Colonel Marshall's
new district lacked a permanent head-
quarters. Some convenient designa-
tion was needed, however, that would
conceal the real nature of the project.
On 26 June, Generals Somervell,
Styer, and Reybold agreed on the
elaborate cover name of Laboratory
for the Development of Substitute
Materials, or DSM. Within the next
discussed laid on m this chapter. Interv, Slanlc\ L.
Palk and Author with Clharles \'anden Bulck (former
S\racusc District civihan emplo\ee before serving as
Chief. Admin I)iv, MD) and his assistant Capt VV. R.
McCaulev. 22 Jun 60. CMH; MDH. Bk. 1. \'ol. 1.
■•(ieneral." p. 3.13. DASA. See also I.tr, Marshall to
Robins. Hi Nov 42, Admin Files, Gen Corresp.
231.2, MDR, in which Marshall's procurement prior-
it \ was extended to supplies and equipment as well
as personnel, and the word surplus was dropped.
two weeks Marshall's plans and orga-
nization for a new district were ap-
proved and he submitted to Colonel
Groves the draft of a general order
establishing a DSM District. To
Groves, the term DSM seemed likely
to arouse attention and curiosity. Ac-
cordingly, the two officers reached
agreement that the name Manhattan,
where Marshall had established his
temporary headquarters, would be a
better name. On 13 August, General
Reybold issued a general order (effec-
tive on the sixteenth) officially estab-
lishing "a new engineer district, with-
out territorial limits, to be known as
the Manhattan District, . . . with
headquarters at New York, N.V., to
supervise projects assigned to it by
44
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
the Chief of Engineers." ^ The term
DSM continued in use as an official
code name for the entire project, but
the word Manhattan — symbolically
representing the Army's contribution
in the development of the atomic
bomb — gradually superseded it.^
Meanwhile, Vannevar Bush carried
out the necessary changes in the
OSRD organization. Under the provi-
sions of the newly approved program,
the OSRD retained responsibility for
pilot plants for the centrifuge, diffu-
sion, and electromagnetic separation
processes, as well as for further re-
search and development on the latter
method, for the heavy water project,
and for additional miscellaneous re-
search. Acting upon a suggestion of
James B. Conant, based upon his
review of past operating procedures
of the uranium project. Bush abol-
ished the S-1 Section and its planning
board and, in their place, established
the S-1 Executive Committee. Mem-
bership of the new committee includ-
ed most of the individuals who had
previously served in the S-1 Section:
Conant, as chairman; Lyman J.
Briggs; Ernest O. Lawrence; Arthur
H. Compton; Harold C. Urey; and
Eger V. Murphree, with the addition
of Irvin Stewart, the OSRD executive
secretary. H. T. Wensel, formerly of
the planning board, became technical
aide. Only Dean George B. Pegram of
Columbia dropped out.
Bush charged the new S-1 Execu-
tive Committee with recommending
contracts and supervising contract op-
erations and enjoined its members to
begin work immediately, in close co-
ordination with the Army Corps of
Engineers. Bush particularly cau-
tioned them on the importance of
maintaining the "greatest secrecy" on
all phases of the project, and stated
that "we will continue ... to adhere
to the principle that confidential in-
formation will be made available to an
individual only insofar as it is neces-
sary for his proper functioning in
connection with his assigned
duties." ^
An additional, though temporary,
responsibility of the S-1 Executive
Committee was overseeing experi-
mentation on the military applications
of atomic energy. As outlined in the
atomic energy program approved by
the President, the Joint Committee on
New Weapons and Equipment of the
Joint Chiefs of Staff had primary re-
sponsibility for this administrative
mission. Vannevar Bush also headed
this committee. Serving with him
were Brig. Gen. Raymond G. Moses,
chief of the Supply Division (G-4) of
the Army General Staff, and Rear
Adm. Willis A. Lee, Jr., who held a
similar position as Assistant Chief of
Staff (Readiness), U.S. Fleet. With
these officers Bush raised the ques-
tion of establishing a subcommittee to
consider military uses of atomic
energy — formed, not hastily, but with
"great care." Pending organization of
this new group. Bush directed the S-1
Executive Committee to continue its
work on military applications. ^°
'WD, (K.K, GO 33, 13 Aug 42. While the legal
designation of the new district was Manhattan Dis-
trict, it was often referred to as the Manhattan Engi-
neer District.
*Smvth Ri-port. p. 59.
^Qiioted words from Memo, Bush to Conant,
19 Jun 42, MDR. See also Stewart, Organizing Scien-
lific Research fm War. p. 122; Smyth Report, p. 59.
'"Ltr, Bush to Stver, 19 Jun 42, and Memo, Bush
to Conant, 19 Jun 42. MDR; Min, 6th Mtg of JNW,
16 Jun 42, 334, JCS: Ms, Vernon E. Davis, "Organi-
ESTABLISHING IHE MANHA ITAN DISTRICT
45
The relationship between the Man-
hattan District and the OSRD S-1
Committee during the summer of
1942 can best be described as a coop-
erative one. While each agency had its
assigned functions within the overall
atomic energy program, they coordi-
nated either formally or informally on
all major decisions. But they did not
act together as a joint directorate, for
each organization was free to proceed
as it wished to carry out decisions, or
other activities, strictly within its own
area of competence.
Periodic meetings of the S-1 Com-
mittee with Colonel Marshall and one
or more other officers of the Manhat-
tan District provided the formal link
between the two organizations. Rep-
resentatives of the principal engineer-
ing or industrial firms connected with
the project also attended frequently.
During this period, the S-1 Commit-
tee met at least once a month, usually
in executive session in the morning —
while Marshall was conferring with his
military superiors — and then opened
the meeting to the Manhattan repre-
sentatives. These joint meetings en-
couraged a free exchange of views,
provided scientific briefings for Mar-
shall and his colleagues, enabled the
scientists to seek Army assistance
where necessary, and generally en-
hanced coordination.^^
zalional I^evelopmciit: Development of the JCS
Committee Structure,"' The History of the Joint
Chiefs of Staff in World War II, Vol. 2 (Washington,
DC: Historical Division, Joint Chiefs of Staff,
1972), pp. 308-12, NARS.
"In addition to material from the Marshall Diary,
MDR, detailed sunmiaries of the S-1 Committee
meetings are included in the DSM Chronology,
OROO. The latter is a rough first-draft summary of
events relating to the Manhattan District, covering
most developments in some detail through .April
1943 and for the single month of July 1944, leaving
a gap from May 1943 through June 1944. The chro-
Army-OSRD links were further
strengthened by cooperation between
Manhattan officers and civilian scien-
tists working together on specific
projects. In the beginning these ties
were kept inconspicuous, especially to
conceal the Army's interest. In their
visits to university or industrial lab-
oratories. Army officers usually wore
civilian clothing, and every effort was
made to hide the relationship be-
tween the Corps of Engineers and
OSRD-directed projects. This effort
was sometimes frustrated when a few
scientists, unaccustomed to working
under rigid security conditions, talked
more freely than they should have
about the Army's interest in their
work. And despite Bush's warnings,
even the S-1 Committee was careless
on occasion. In mid-August, for ex-
ample, Colonel Marshall had to point
out that highly classified material
should not be sent to him through
the regular mail. In general, however,
the good relationship between the
Manhattan District and the S-1 Com-
mittee helped to keep such occur-
rences to a minimum.
Details of the Army-OSRD meet-
ings reached the Top Policy Group
through twin channels: scientific and
military. Conant reported to Bush
and Colonel Marshall to his superiors
in General Reybold's office, or some-
times directly to General Styer. The
latter then passed on information
about the atomic project to Generals
Somervell and Marshall. Secretary of
War Henry L. Stimson appears to
nology, apparently prepared in late 1944 bv Maj.
Harrv S. Iravnor, a Manhattan staff officer, is based
not onlv on sources cited in this volume but also on
certain other materials not available to the present
author.
46
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
have received only limited data on de-
velopments during the summer of
1942; Vannevar Bush submitted only
one formal report to Harvey Bundy,
the Secretary's special assistant for
scientific affairs. To what extent Vice
President Henry A. Wallace received
information on atomic developments
is unclear; the Top Policy Group did
not meet during this period and there
is no other indication that reports
were sent to Wallace. Even the Presi-
dent's information and activities were
evidently limited to the question of
nuclear collaboration with Great Brit-
ain, and he seems to have discussed
that only with Bush. In effect, then,
the S-1 Executive Committee and
Manhattan District were free to act on
any mutually approved decision.
Their scientific or military superiors
could always exercise the right of
veto, but in the summer of 1942 they
apparently did not do so. Only later,
when major changes were to be made
in the atomic energy program, would
they once more actively enter the
picture. ^^
Army-OSRD Planning Meeting,
23 June 1942
On the occasion of the first meet-
ing of the S-1 Executive Committee,
convened at the Carnegie Institution
in Washington, D.C., on 25 June
1942, General Styer, Colonels Mar-
shall and Nichols, Vannevar Bush,
and the regular members of the com-
mittee reached several important de-
cisions regarding site selection, con-
tracting with engineering firms, and
obtaining government priorities for
needed materials and equipment. ^^
War Department policy normally
required location of new munitions
plants out of range of enemy carrier-
based planes, in a great inland zone
between the Appalachian and Rocky
Mountains and approximately 200
miles from the nation's borders with
Canada and Mexico.^* General Styer
stated that the main atomic energy in-
stallations should be placed within
this zone and that, to ensure secrecy,
all manufacturing plants should be
built at a single site. The group gen-
erally agreed with Styer on plant con-
centration, which would enable rapid
and economical construction and fa-
cilitate control over the work. To sup-
port the extensive facilities, a continu-
ous supply of approximately 150,000
kilowatts of electricity would be
needed by the end of 1943 and hun-
dreds of thousands of gallons of
water per minute. There would have
to be a climate suitable for construc-
tion in winter, a ready supply of
labor, an accessibility to transporta-
tion, a relative immunity from enemy
attack, and a terrain cut up by ridges
that would limit the effects of any ac-
cidental explosion.
Some steps for finding a satisfac-
tory site already had been taken. An
OSRD-directed study group in early
April had picked out an area near
Knoxville, close to the region under
intensive development by the Tennes-
'^ Smyth Report, pp. 58-60; Stimson Diary for
summer of 1942, HI.S; Memo, Bush to Bundy, 29
Aug 42. HB Files, Fldr 58, Mi:)R; 1st Ind, Styer to
Chiel of Mil Hist, 15 Aug 61, to l.tr, Chief of Mil
Hist to Slver, 17 Jul 61, CMH.
"Subsection based primarily on Marshall Diary,
25 Jun 42, MDR, and DSM Chronology, 25 Jun 42,
Sec. 2(e), OROO.
14 Lenore Fme and Jesse A. Remington, The Corps
of Engineers: Conslruclwn m the United States, L'.S. Army
in World War II (Washington, D.C.: Governmenl
Printmg OflKe, 1972), pp. 134-35.
ESTABLISHING THE MANHATTAN DISTRICT
47
see Valley Authority, as suitable for
the full-scale centrifuge and diffusion
separation plants. (See Map 1.) About
the same time, members of Arthur
Compton's team at the Metallurgical
Laboratory in Chicago had been seek-
ing a site for the full-scale plutonium
production plant. They seriously
weighed the possibilities of two loca-
tions near Chicago, but finally con-
cluded that the Tennessee Valley was
also the best area for their purposes.
In mid-June, Bush expressed his liking
for the Tennessee site to General
Styer, and Colonel Marshall, in one of
his first moves as district engineer,
also discussed its merits with Colonel
Groves. Groves made a quick survey of
the electric power situation and indi-
cated his approval of the Knoxville
area. Thus, Army representatives rec-
ommended the Tennessee Valley loca-
tion for all the large-scale production
plants. ^^
All scientific leaders at the 25 June
planning meeting accepted this rec-
ommendation save Lawrence, who
maintained that the electromagnetic
separation plant ought to be located
closer to his research operations in
California. Bowing to his objections,
the conferees agreed to postpone a
decision on location of the electro-
magnetic plant, pending further
progress in basic research on this
process. Even though research for the
centrifuge and diffusion methods was
still at a stage where firm planning
for production installations was im-
practical, the group decided that the
plants for these processes as well as
for the plutonium process would be
located on a 200-square-mile site in
the Tennessee Valley. The Army, the
planning group agreed, should begin
steps at once to select and acquire
this site.
The planners also considered sites
for two other operations. The first
was a pilot plutonium plant required
by the Metallurgical Laboratory. This
plant needed to be within commuting
distance of the laboratory; but, for
reasons of safety and security, it could
not be built in heavily populated Chi-
cago. Consequently, Compton and his
colleagues selected an isolated area
known as the Argonne Forest, a part
of the Cook County Forest Preserve
about 20 miles southwest of the city.
This selection was tentatively ap-
proved on 25 June and the next day
Compton and Colonel Nichols
reached final agreement on the gen-
eral plan for the Argonne site.^^
In 1941, the OSRD had sponsored
laboratory tests at Princeton Univer-
sity, under the direction of British
chemist Hugh S. Taylor, to develop a
technique for large-scale production
of heavy water by a hydrogen-water
exchange process. Taylor had found
that this process operated most effi-
ciently when using the electrolytic
method to produce hydrogen. The
Consolidated Mining and Smelting
Company, a Canadian firm, operated
an ammonia plant at Trail on the Co-
lumbia River, situated a few miles
15MDH. Bk. 1, Vol. 12, "Clinton Engineer
Works," pp. 2.1-2.6 and Apps. A140-A142, DASA;
Compton, Atomic Qitesl. pp. 154-55; Ltr, Bush to
Stver, 15 Jun 42, Admin Files, Cen Corresp, 600.3,
MDR; Marshall Diary, 19 Jun 42, MDR; Croves, Xoiv
It Can Be Told. pp. 13-14.
'^ Ms, Arthur C-ompton, "Mr. Fermi, the .Argonne
Laboratory and the University of Chicago," 28 Jul
44, p. 1, Admin Files, Gen Conesp, 080 (Argonne-
Univ of Chicago), MDR; Maishall Diarv, 26 Jul 42,
MDR; Compton, Atomic Quest, pp. 110-11; MDH,
Bk. 1, Vol. 12, p. 2.5, DASA.
MAP 1
ESTABLISHING THE MANHATTAN DISTRICT
49
north of the Canadian-U.S. border,
that was the largest producer of hy-
drogen by the electrolytic method in
North America. In an effort to tap
this resource for heavy water, Taylor
met with company officials to discuss
the possibility of Consolidated Mining
allowing its plant to be altered so that
heavy water could be extracted from
the hydrogen supply without using up
any appreciable quantities of the hy-
drogen. The reaction was favorable.
The OSRD therefore made the final
arrangements and, in May of 1942,
engaged the Boston construction firm
of E. B. Badger and Sons to proceed
with the engineering and design work
on plant alterations. During the 25
June meeting, Army-OSRD represent-
atives approved the plan for Trail
and, on the twenty-sixth, shifted re-
sponsibility for construction to the
Army but left the financing and direc-
tion of research with the OSRD.^^
A few days before the meeting.
Colonel Marshall had talked with
Groves about his urgent need for
competent engineering advice in or-
ganizing the atomic project and
Groves had recommended Stone and
Webster. The well-known Boston firm
already was involved in an OSRD
project on the diffusion method and
was currently maintaining a good
record on several contracts for the
Corps of Engineers. Marshall pro-
posed to the Army-OSRD group that
it engage Stone and Webster as archi-
tect-engineer-manager for the atomic
project, to monitor site development
and major construction.^®
The Army-OSRD conferees ap-
proved Marshall's proposal and
agreed that Stone and Webster would
be primarily concerned with site de-
velopment and housing construction
in Tennessee and with engineering
and building the centrifuge and elec-
tromagnetic plants. In addition, the
firm would build the Argonne pilot
plant and, eventually, the full-scale
plutonium production plant. The
group also decided to engage the
M. W. Kellogg Company of New
Jersey. This firm had extensive expe-
rience in the design and construction
of petroleum refineries and chemical
installations and was already assisting
the scientific team at Columbia on
diffusion research under an OSRD
contract. Kellogg would take respon-
sibility for the diffusion plant and
Badger and Sons would continue on
the job at Trail. ^^
The Army-OSRD group decided
that a substantial number of OSRD
research contracts already in oper-
ation should be extended at the dis-
cretion of the S-1 Executive Commit-
tee. To continue these contracts
beyond the end of the fiscal year —
less than a week away — the atomic
program urgently needed $15 million.
Marshall promised to obtain the
money immediately from engineer
funds. This sum represented slightly
less than half of the $31 million in-
cluded for the OSRD in the program
'^ Hewlett and Anderson, Xew World, pp. 66-67;
MDH, Bk. 3, "The P-9 Project," Sees. 1-2, passim.
DASA; Marshall Diarv, 26Jun 42, MDR; DSM Chro-
nology, 25 Jun 42, .Sec. 2(e). OROO.
18 Groves, Xow It Can Be Told. pp. 12-13; Marshall
Diarv, 25, 27, and 29 June 42, MDR.
19 DSM Chronology, 25 Jun 42. Sec. 2(a). OROO;
Stephane GrouefT, Manhattan Project: The Untold Story
of the Making of the Atomic Bomb (Boston: Little.
Brown and Co., 1967), pp. 22-23.
50
MANHAITAN: THE ARMY AND IHE AIOMIC BOMB
approved by President Roosevelt on
17 June. Yet it sufficed, for the Army
gradually took over most OSRD func-
tions in the field of atomic energy
and the $15 million proved to be
more than enough to finance all fur-
ther OSRD expenditures for the
atomic program. ^^
The final subject at the Army-
OSRD meeting was the urgent need
to obtain government priorities suffi-
ciently high to ensure a ready supply
of critical materials and equipment.
Some required items were in ex-
tremely short supply and the OSRD
was having little success obtaining
them. What was needed, OSRD rep-
resentatives told Colonel Marshall,
was some means of coordinating their
requirements and gaining the neces-
sary priorities to satisfy them. They
requested that the Army designate a
priorities officer to meet with them
and to establish an office in Washing-
ton, D.C. Marshall agreed and indi-
cated that, as a first step, he would
eliminate obvious competition by co-
ordinating Army and OSRD procure-
ment on the atomic project.
The decisions of the Army and
OSRD representatives had served to
inaugurate officially a new phase in
the atomic energy program, a period
of Army-OSRD cooperation that
would last until late spring of 1943.
Progress in Research and Development
For Colonel Marshall and his Man-
hattan District associates, the summer
of 1942 was a period of organization
and planning to lay groundwork
for developing an unprecedented
2° Marshall Diary, 29-30 Jun 42, MDR; Stewart,
Organizing Scientific Research /or War, p. 123.
weapon. The scope of the problem
was broad. To the normal administra-
tive headaches of setting up a very
large construction and manufacturing
project were added the problems of
expediting and coordinating research,
experimentation, industrial applica-
tion, and design of a weapon based
on materials that in all probability
would not be available for testing
until the weapon itself had been built.
Of all the problems to be dealt with —
the execution of engineering, con-
struction, and operating contracts; the
selection and acquisition of sites; the
obtaining of large sums of money and
of adequate priorities; the procure-
ment of materials; the maintenance of
security — the first and most basic to
the success of the whole project was
that of continued progress in scien-
tific development. On this rested the
outcome of the entire atomic enter-
prise. And, in mid- 1942, Marshall
found that nearly all problems he
faced were connected in one way or
another with the vital task of research
and experimentation.
The program adopted on 17 June
called for backing all five methods of
producing fissionable materials — until
one or more proved most certain of
success. Thus, each process was sub-
ject to intensive research efforts that
summer. Objectives for the centrifuge
process were a pilot plant and, by
January 1944, a full-scale plant pro-
ducing 100 grams of U-235-enriched
uranium per day. A low-yield pilot
plant and a 1-kilogram-per-day pro-
duction plant were planned for the
diffusion process and a 5-gram-per-
day pilot plant and, by late 1943, a
100-gram-per-day production plant
for the electromagnetic process. The
ESI ABLISHING 1 HE MANHA I I AN DISTRICT
51
plutonium project needed a 100-
gram-per-day production plant, as
well as heavy water plants producing
0.5 tons per month by May 1943.^^
The diffusion and centrifuge meth-
ods, which had seemed most promis-
ing the previous autumn, now ap-
peared less certain than the others.
And of the pile and electromagnetic
processes, the latter appeared to offer
the best immediate hope.
Although the feasibility of the gase-
ous diffusion method had been dem-
onstrated, two major problems stood
in the way of achieving large-scale
separation of uranium isotopes. First
was development of a material that
would be sufficiently porous to permit
passage of uranium hexafluoride
through thousands of stages, as well
as be resistant to the exceptional cor-
rosiveness of this gas and suitable for
fabrication by mass production meth-
ods. The second was to design and
manufacture corrosion-resistant me-
chanical equipment — a variety of
pumps, valves, seals, and instru-
ments— to move the gas through
miles of pipe, maintaining required
vacuum conditions, temperatures, and
pressures.
These problems were being studied
mainly at Columbia University under
John Dunning and Harold Urey, but
also by the M. W. Kellogg Company,
whose chief concern was major pro-
duction of diffusion equipment and,
eventually, construction of a full-scale
plant. At a meeting of the OSRD S-1
Executive Committee on 30 July
1942, Urey reported his hope that the
diffusion method would be producing
enough enriched uranium by the fall
of 1944 to begin using that material
in an atomic weapon. ^^
Work on the centrifuge process was
going equally slow. Under the general
direction of Eger Murphree, theoreti-
cal and experimental research contin-
ued at Columbia University and the
University of Virginia, respectively;
design and development at the Wes-
tinghouse Research Laboratories, a
subsidiary of the Westinghouse Elec-
tric and Manufacturing Company; and
engineering studies at the Standard
Oil Development Company. Feasibili-
ty of the method had long been dem-
onstrated, but major technical and
mechanical difficulties prevented
rapid progress. Nevertheless, a pilot
plant had been designed at Standard
Oil and actual production of parts
and models for the pilot plant was
under way at Westinghouse. Like the
diffusion process, the centrifuge proc-
ess would require many hundreds of
stages to achieve large-scale separa-
tion. Also by Murphree's estimate, the
centrifuge method could not produce
a sufficient amount of enriched urani-
um for use in atomic weapons before
autumn of 1944. ^^
Of all the programs in progress
that summer, perhaps the most exten-
sive was the pile process for manufac-
turing plutonium under the leader-
ship of Arthur Compton at the
University of Chicago. The objectives
of the Chicago program were to
prove experimentally that a chain re-
2> I.tr, Bush to President, 17 Jun 42, and Ind, HB
Files, Fldr 6, MDR.
22 Smvth Report, pp. 125-35; MDH, Bk. 2, Vol. 3,
"Design!" pp. 2.1-2.2. DASA; DSM Chronology,
30 Jul 42, Sec. 2(e), OROO; Compton, Atomic Quest,
p. 152.
23 MDH, Bk. 1, Vol. 4, "Auxiliary Activities," pp.
14.1-14.24, DASA; DSM Chronology, 30 Jul and
26 Aug 42, each Sec. 2(e), OROO; Marshall Diary,
24-26 and 28 Aug 42, MDR.
52
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
action was actually possible, then to
devise a means to produce plutonium
on a large scale and extract it chemi-
cally from uranium, to work out the
necessary data for bringing about an
explosive chain reaction with either
plutonium or U-235, and, finally, to
design the atomic bomb itself. Investi-
gations into all of these problems
were being conducted simultaneously
by large research staffs at the Univer-
sity of Chicago and other institu-
tions.^'* One particularly important
group at the University of California
(Berkeley) had been organized in
June by J. Robert Oppenheimer, then
widely regarded as "the leader of the-
oretical aspects of atomistics and
similar subjects of physics." ^^ Under
Oppenheimer's direction a number of
the nation's ablest theoretical physi-
cists undertook a study that, in Op-
penheimer's words, "for the first time
really came to grips with the physical
problems of atomic bombs, atomic
explosions to initiate thermonuclear
reactions." By the latter he meant the
possibility of a hydrogen bomb, a
matter that he raised with Compton
and Bush that summer and that was
to lie heavy on his mind for many
years to come.^^
The University of Chicago's Metal-
lurgical Laboratory staff also devoted
most of its energies to theoretical
** Account of work carried out at Chicago based
on Compton's book Atomic Quest, pp. 80-98; Smyth
Report, pp. 63-74; Testimony of Oppenheimer in
Atomic Energy Commission, In the Matter of J. Robert
Oppenheimer: Transcript of Hearing Before Personnel Secu-
rity Board (Washington, D.C.: Government Printing
Office, 1954), pp. 11-12 and 27-28.
^* Testimony of Bush in Oppenheimer Hearing, p.
563.
^® Quotation from Ltr, Oppenheimer to Nichols,
4 Mar 54, Oppenheimer Heanng, p. 11. See also
Memo, Bush to Bundv, 29 Aug 42, HB Files, Fldr
58, MDR.
studies. Lack of basic materials — ura-
nium, plutonium, highly purified
graphite, and heavy water — made any
extensive experimentation program
impossible. Nevertheless, at the
30 July meeting of the S-1 Commit-
tee, Compton estimated that plutoni-
um would be ready for use in an
atomic weapon by fall of 1944.^' The
process that appeared to offer the
best hope for producing fissionable
materials was the electromagnetic
method under study at Princeton and
at the University of California (Berke-
ley), where Lawrence's work with the
giant 184-inch magnet attracted the
most attention. As with other ap-
proaches, this method had been faced
with major technical difficulties, but
as the months passed Lawrence en-
thusiastically reported success in
meeting and overcoming these prob-
lems. Most important, he had actual-
ly achieved the separation of small
amounts of U-235, even though only
in milligram quantities. ^^
A visit in late July to Berkeley by
Colonel Marshall and Stone and
Webster representatives convinced
them that, in Marshall's words, "Law-
rence's method is ahead of the
other[s] . . . and should be exploited
to the fullest without delay." The
colonel was anxious that work on "a
sizeable pilot plant," as well as a full-
scale production plant, begin as soon
as possible. ^^ The S-1 Committee ap-
" Smyth Report, p. 67; DSM Chronology, 30 Jul
42, Sec. 2(e) OROO.
^* Discussion of electromagnetic process based on
Marshall Diary, 9, 20, 30-31 Jul and 5, 17-19, 22
Aug 42, MDR; Smyth Report, pp. 136-41 and 143-
45; DSM Chronology, 9 and 30 Jul 42, each Sec.
2(e), OROO.
"Marshall Diary, 20 Jul 42, MDR.
ESTABLISHING I HE MANHAITAN DISTRICT
53
proved Colonel Marshall's recommen-
dation on 30 July and decided that
the Army, rather than the OSRD,
would be responsible for building the
pilot plant on land rented from the
University of California. Lawrence es-
timated that material from the elec-
tromagnetic process would be ready
to go into an atomic weapon by the
spring of 1944.
In mid-August, Colonel Nichols vis-
ited Berkeley and gave his tentative
approval to plans for the pilot plant.
With him was Maj. Thomas T. Cren-
shaw, whose job it was to set up the
new California Area Engineers Office
of the Manhattan District, to support
and assist Lawrence, and to represent
Colonel Marshall during construction
and operation of the pilot plant. Nich-
ols felt that Lawrence was "making
great progress and that the whole
project should be pushed into full-
scale production as fast as possible,"
an opinion with which Lawrence
agreed wholeheartedly. Indeed, be-
cause Lawrence's only question con-
cerned the actual efficiency of the
separation units, he felt that construc-
tion of the full-scale production plant
should be started concurrently with
that of the pilot installation. ^°
At the 26 August meeting of the
S-1 Committee, both August C.
Klein, Stone and Webster's chief me-
chanical engineer, and Colonel Mar-
shall supported Lawrence's proposal,
and there was general agreement,
based upon Lawrence's optimistic
report, that the electromagnetic
method would probably be first to
^"Qiiotation from Marshall Diarv. 17-18 Aug 42,
MDR. See also Memo, Crenshaw to Hist Engr, sub:
Weeklv Progress Rpt, 22 Aug 42, Admin Piles, Cien
Corresp, 001 (Mtgs), MDR.
yield material in substantial amounts.
The plutonium process, though pro-
gressing satisfactorily, was still
months awa\ from even the pilot
plant stage and the other methods
lagged even further behind. Had a
decision been made at this time to
back a single horse in the nuclear
race and to scratch the others, Law-
rence very likely would have been the
one rider left on the course.
Yet no one was certain that the
electromagnetic method would prove
to be the best process in the long
run. In fact, the group conjectured
that the ultimate full-scale plant
would probably have several times the
capacity of the contemplated electro-
magnetic production plant and was
likely to be comprised of a combina-
tion of methods, with one process
producing enriched uranium and the
electromagnetic method providing the
final stage of separation. They
thought a decision to proceed with an
electromagnetic production plant was
unrealistic and might be interpreted
as a final decision in favor of the elec-
tromagnetic process, causing the de-
velopment of the other methods to be
slowed down — or even eliminated.
At last the conferees at the 26 Au-
gust meeting agreed to continue work
as rapidly as possible on the four
pilot plants and on the production of
heavy water at Trail. A start on a full-
scale plutonium production plant
would be delayed, pending the out-
come of experiments at the Argonne
pilot plant. Design and construction
of an electromagnetic production
plant would be postponed until mid-
September, when the S-1 Committee
was to visit the Berkeley project and
make further recommendations. Van-
54
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
nevar Bush approved these conclu-
sions and passed them on to Secreta-
ry Stimson with the warning that the
time would soon be at hand for a
major decision on the extent of the
effort the United States should make
on the atomic energy program. ^^
31 Marshall Diary, 26 Aug 42, MDR; DSM Chro-
nology, 26 Aug 42, Sec. 2(e), OROO; Memo, Bush
to Bundy, 29 Aug 42, HB Files, Fldr 58, MDR.
CHAPTER III
First Steps for Weapon
Development
In those incredibly busy two
months following the planning meet-
ing of 25 June 1942, the military lead-
ers— working closely with project sci-
entists and technicians — energetically
set about not only to organize the
operational requirements for the
Army's administration of the project
but also to carry out the specific steps
for development of an atomic
weapon. On the twenty-sixth Maj.
Gen. Eugene Reybold, chief of the
Corps of Engineers, held a briefing
with Brig. Gen. Thomas M. Robins,
the assistant chief; Col. Leslie R.
Groves, the deputy assistant; Col.
James C. Marshall, the new district
engineer; and Lt. Col. Kenneth D.
Nichols, the deputy district engineer.
During the session Reybold reviewed
some of the immediate problems of
the atomic project, placing special
emphasis on two that required
prompt action: selection and acquisi-
tion of a site for atomic production
facilities in the 1 ennessee Valley, and
securing a contract with the Stone
and Webster Engineering Corpora-
tion to serve as architect-engineer-
manager (AEM).
Securing an Architect-Engineer-Manager
Consistent with Army policy that
the industrial operator of a proposed
installation should have a strong voice
in selection of the specific site, the
district engineer gave his first atten-
tion to securing a working agreement
with Stone and Webster, which was
slated to have the chief responsibility
for the Tennessee plants.^ Following
Colonel Marshall's orders. Colonel
Nichols went to New York on Satur-
day, 27 June, to visit Stone and Web-
ster President John R. Lotz. Nichols
outlined the role projected for the
firm and Lotz responded enthusiasti-
cally. The following Monday, Lotz
and other company officials met with
Robins, Groves, Marshall, and Nichols
in Washington, D.C. Lotz assured
them the AEM job would not serious-
ly interfere with the firm's work on
other important Corps of Engineers
contracts and that the firm could
meet the strict security requirements
of the atomic project. The group then
drew up a letter of intent, which Lotz
» Marshall Diary, 26 Jun 42, OCC; Files, Gen Cor-
resp. Groves Files, Misc Recs Sec, behind Fldr 5,
MDR; Fine and Remington, Corps of Enginens: Con-
struction, p. 135.
56
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
and Marshall signed, authorizing
Stone and Webster to begin work im-
mediately on preliminary investiga-
tions and surveys, procurement of
supplies, and initiation of design. The
following afternoon, Vannevar Bush,
director of the Office of Scientific Re-
search and Development (OSRD),
gave the Stone and Webster repre-
sentatives a thorough explanation of
the technical processes involved in
the atomic project. This completed
the preliminary discussions.
Stone and Webster now became the
Army's agent for managing the
atomic energy project, charged with
overseeing and subcontracting all re-
search and development, procure-
ment, engineering, and construction
that fell within the Army's sphere of
responsibility. Company officials es-
tablished a separate engineering
group to operate with the utmost se-
crecy under the direct control of the
firm's senior engineers. Project lead-
ers had hoped that a single company
could perform all AEM tasks; howev-
er, by the time Stone and Webster
signed the formal contract (backdated
to 29 June) several months later, the
Army had to seek the assistance of
other major firms to share with Stone
and Webster the vast and complex
job.2
Obtaining Funds
The Stone and Webster agreement
required immediate funds. The ap-
proved program had allotted $85 mil-
lion— $54 million for the Army Corps
of Engineers and $31 million for the
OSRD — but had not indicated the
source of this money. ^ An effort in
early June to obtain this sum from the
President's Emergency Fund was un-
successful. Marshall's pressing finan-
cial obligations totaled $38 million:
$10 million to cover the letter of
intent issued to Stone and Webster,
$15 million to repay the sum ad-
vanced to the OSRD, $6 million for
site acquisition, $2 million for the
projected Argonne pilot plant, and $5
million for the purchase of materials.
He also required "practically unlimit-
ed authority," as he put it, to spend
it.4
By 16 July, Marshall was able to ar-
range for an allotment from the
Office of the Chief of Engineers, spe-
cifically from the Engineer Service-
Army category of available funds. The
$15 million for the OSRD had already
been provided, $5 million was fur-
nished immediately, and the remain-
der became available a few weeks
later at the time of the formal alloca-
tion of the total sum. Marshall also
received assurances from the War De-
partment's budget officer that all re-
strictions on the use of these funds
that could legally be removed had
been set aside. These included regu-
lations on establishing title to proper-
ty, the placing of government con-
tracts, employment in the United
States and abroad, rentals and im-
2 Marshall Diary, 27, 29-30 Jun and 1 Jul-23 Oct
42, MDR; Completion Rpt, Stone and Webster, sub:
Clinton Engr Works, Contract W'-7401-eng-13,
1946, pp. 6 and 143, OROO; Stone and Webster, A
Report to the People: Stone and Webster Engineering Corpo-
ration in World War II (| Boston]: Stone and Webster,
1946), pp. 9-13; Smyth Report, p. 28.
3 Ltr. Bush to President, 17 Jun 42, and Incl, HB
Files, Fldr 6, MDR.
•* Marshall Diary, 10 Jul 42, MDR. Section on
funds based on entries in ibid, for 29-30 Jun, 9-11
and 16 Jul 42; Memo, Marshall to Groves, sub: Al-
lotment of Additional Funds to MD, 29 Sep 42,
Admin Files, Gen Corresp, 110 (Appropriations),
MDR; Groves, Sow It Can Be Told. pp. 15-16.
FIRST STEPS FOR WEAPON DEVELOPMENT
57
provements of property, and several
other controls. Colonel Marshall ap-
peared to be well on the way to at-
taining the fiscal means and inde-
pendence that the atomic project
required.
Securing a Priority Rating
Even as fiscal problems eased, the
atomic project encountered serious
difficulties on the matter of priorities.
In the summer of 1942, competition
for critical materials was strong and
unremitting as America prepared to
halt the worldwide Axis offensive.
With these conditions prevailing.
Colonel Marshall soon realized that
access to the scarce supplies and
equipment needed for atomic re-
search, construction, and production
might be blocked unless he could
secure a high-priority rating for the
project.
In the wartime economy, the estab-
lishment of priorities for military and
civilian demands was the responsibil-
ity of the War Production Board
(WPB), succinctly characterized by
one World War II historian as "the
supreme industrial mobilization con-
trol agency." ^ The Army and Navy
Munitions Board (ANMB) adminis-
tered the priority system for military
and related agencies, theoretically
subject to WPB approval, but in 1942
the War Department's Services of
Supply (SOS) gradually began to take
over the ANMB's responsibilities re-
^ R. Elberton Smith, The Army and Economic Mobili-
zation, U.S. Army in World War II (Washington,
D.C.: Government Printing Office, 1959), p. 517.
Discussion of DSM priority problems based primari-
Iv on Marshall Diary, 25 Jun-16 Sep 42, MDR; DSM
Chronology, Jun-Sep 42, Sec. 18, OROO; Memo,
Bush to Bundy, 29 Aug 42, HB Files, Fldr 58. MDR;
Groves, Now It Can Be Told, pp. 16 and 22-23.
lating to the Army. The SOS, particu-
larly through its staff divisions for re-
quirements and resources that formed
the ANMB's Army Section, controlled
and coordinated all War Department
procurement activities. SOS officers,
moreover, served on WPB commit-
tees. For example. Brig. Gen. Lucius
D. Clay, the SOS deputy chief of staff
for requirements and resources, had
an important voice in the establish-
ment of policy and would play a key
role in the matter of assigning prior-
ities to the atomic project.
Major programs received ratings of
AA-1 through AA-4, in decreasing
order of precedence, whereas lesser
projects received ratings in a more
extensive category, the highest desig-
nation of which was A-l-a. A special
top rating of AAA, reserved for emer-
gencies, could not be assigned to an
entire program but was limited to
expediting delivery of small quanti-
ties of critical items. Although the
program approved by President
Roosevelt did not mention a specific
priority designation for the new
project, it did imply that the program
should be given a relatively high
rating, which was to be balanced
against the needs of other critical
projects.^ When Colonels Marshall
and Nichols met with General Clay on
30 June, they requested only an AA
rating — without, apparently, asking
for a specific classification within that
category. Marshall assured Clay that
the project "would issue such lower
ratings as were possible whenever we
did not need the A." "^ General Clay,
^ Ltr, Bush to President, 17 Jun 42, and Incl,
MDR.
7 Marshall Diarv, 30 Jun 42, MDR.
58
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
who had known Marshall since their
days as West Point classmates, told
Marshall and Nichols that all DSM re-
quests would be given prompt atten-
tion and the highest preference in
processing, and that he personally
would take immediate steps to obtain
an AA rating for the project and
would be available at any time for any
specific request.
Despite Clay's assurances, nearly
two weeks passed with no priority
rating forthcoming. Finally, on 13
July, following some persistent prod-
ding by Colonel Nichols, the ANMB
approved a rating of AA-3 for the
atomic project.® This rating, with
which Clay concurred, came as a
grave disappointment. It was based,
however, on an ANMB directive that
limited AA-1 and AA-2 ratings to the
most essential and urgently needed
weapons and equipment — airplanes,
ships, guns, and tanks scheduled for
production in 1942. Even AA-3 rat-
ings were reserved for those items of
military equipment and construction
that constituted an essential part of
the 1942 program or were required in
1942 for the 1943 program. Under
the circumstances, a rating of AA-3
was the highest the atomic project
could have received. Indeed, given
the as yet unproved nature of the
project, the cautious estimates of how
long it might take to produce atomic
weapons, and the absence of a specif-
ic presidential directive assigning it a
high priority, the wonder is that the
^Written confirmation came ten days later. 1st
Ind, Col Joseph L. Phillips (Priorities Br chief. Re-
sources Div, SOS) to Chief of Engrs, 23 Jul 42, to
Ltr, Nichols to Priorities Div, ANMB, Attn: Col Phil-
lips, sub: Preference Rating [for] DSM Proj, 23 Jul
42, in MDH, Bk. 1, Vol. 9, "Priorities Program,"
App. A3, DASA.
atomic program fared as well as it
did. Because the ANMB was limiting
AA-1 and AA-2 ratings. Clay told the
protesting Nichols that an AA-3
should be adequate for the atomic
project. If difficulties did arise, he
promised the project could obtain an
AAA priority to pry loose certain
critical items. With this assurance,
the atomic project leaders had to be
satisfied.
The anticipated problems were not
long in appearing. Badger and Sons
soon reported that the heavy water
reconversion work on the Trail plant
was coming into competition with its
commitments in the synthetic rubber
program. Both projects had an AA-3
rating, with the rubber program
having first choice on materials and
skilled workmen because of its earlier
start. By mid-August 1942, Badger of-
ficials estimated the Trail plant would
probably not go into operation until
August 1943, although an AA-1
rating might better this date by at
least two or three months. This, how-
ever, would cause a delay in the
rubber program and, as S-1 Commit-
tee Chairman James B. Conant point-
ed out to Colonel Nichols, it would
be bad politics to push for a higher
priority at Trail at the expense of
such a critical project as synthetic
rubber. As a matter of fact. General
Clay had already indicated his opposi-
tion to such a move. Thus, for the
moment, the best policy seemed to be
to go ahead at Trail under the AA-3
rating.
Procurement was generally an S-1
Executive Committee responsibility,
and only when the OSRD was unable
to secure the necessary priorities did
it turn to the Army for help. During
FIRST STEPS FOR WEAPON DEVELOPMENT
59
July, difficulties in obtaining small but
essential quantities of scarce materials
held back progress on important ex-
perimental work. Two much-needed
nickel shipments totaling less than 85
pounds, for example, were threatened
with a delay of several months and
were only cleared for delivery after
two weeks of effort by OSRD mem-
bers, General Clay, and Maj. Gen.
Wilhelm D. Styer, the SOS chief of
staff. 9
On 30 July, the S-1 Committee
raised this problem with Colonels
Marshall and Nichols, and the group
decided to urge OSRD Director Van-
nevar Bush to ask WPB Chairman
Donald Nelson for a blanket AA-1
priority for all atomic project orders
below a value of $1,500 or $2,000, to
eliminate bottlenecks without interfer-
ing unduly with other wartime pro-
grams. The next day Marshall, accom-
panied by Nichols, went again to see
General Clay, making one last at-
tempt to secure the desired rating
before going over his head. Clay re-
peated that the atomic project was en-
titled to no higher rating than AA-3,
except in very few specific instances,
and said he would oppose any effort
to secure a blanket AA-1 rating. That
afternoon, Marshall, Nichols, Conant,
and others met with Bush, emerging
with an agreement that the OSRD di-
rector would confer with the WPB
chairman. Receptive to Bush's pro-
posal. Nelson promised to discuss the
matter further with Army Chief of
Staff General George C. Marshall, but
whether or not he actually did is un-
clear. In the end, the matter was re-
^ Correspondence relating to this incident, begin-
ning with Ltr, Styer to Dr. H. T. Wensel (Natl Bur
of Standards), 26 Jun 42, filed in AG 313.3 (22 Aug
47).
ferred back to the ANMB, which still
refused to grant a higher rating but
worked out a procedure that eliminat-
ed the bottleneck on small orders.
Meanwhile, the priorities situation
worsened. Securing materials became
progressively more difficult. Steel, for
example, would soon be virtually un-
obtainable with less than an AA-2
rating. Without access to this basic
material, the atomic project would
come to a standstill. Marshall was al-
ready receiving reports of delays in
plant construction and, in mid-
August, the ANMB questioned con-
tinued assignment of even an AA-3
priority to the Trail project. Prompt
action by General Clay ended that
threat, however.
On 26 August, Marshall, Nichols,
and Stone and Webster representa-
tives met with the S-1 Executive
Committee, and again priorities were
a major topic. Most small orders were
now being handled without undue
delay, but there was serious general
concern about the large-scale pro-
curement soon to be required for the
production plants. A limited number
of firms had the organization and ex-
perience needed to build and operate
the major facilities, and they were all
heavily engaged on other AA-3 pro-
grams for which orders had been
placed before atomic project orders.
The only way to push ahead of other
programs was to get a higher priority.
With an AA-1 priority, the electro-
magnetic separation pilot plant would
probably be ready by April instead of
August 1943 and earlier completion
dates for other plants would also be
assured. The effect of achieving this
end, however, would be that of delay-
ing the progress of other vital
60
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
projects. Clearly a decision was
needed, perhaps from the President
himself, on the relative importance of
the atomic project and other war pro-
grams. Either atomic energy should
be pushed with a higher priority, or it
should remain an experimental
project for postwar application, with a
lower priority.
As a result of these conclusions, on
29 August Colonel Nichols again
called on General Clay. With concur-
rence from General Styer, Nichols
now outlined the status of the atomic
energy program and presented the
unanimous opinion of its Army and
OSRD leaders that a higher priority
was necessary. If Clay would indicate
exactly what procedure must be taken
to secure an AA-1 priority from the
ANMB and WPB, Bush would obtain
a letter signed by the President and
addressed to whomever Clay thought
necessary. Clay suggested that a letter
go from the Joint Chiefs of Staff to
the ANMB and that it simply state
that the atomic project should be
granted a higher priority. But he him-
self opposed this course. He did not
believe that the presidential approval
of 17 June ever implied the granting
of an overall AA-1 rating and he was
convinced that the project was less
important than "tanks and other mu-
nitions of war." Clay would support
the AA-3 priority, but nothing higher.
In Nichols's presence, he telephoned
Brig. Gen. Theron D. Weaver — direc-
tor of the SOS Resources Division
and, thus, the ANMB's senior Army
representative — and directed that the
AA-3 rating assigned to the atomic
project should not be questioned. ^°
On the same day, Vannevar Bush
wrote to Harvey Bundy, Stimson's
special assistant who served as the
Secretary's personal agent in scientific
affairs. Bush knew that his memoran-
dum would come to Stimson's atten-
tion. He summarized the current
status of the atomic energy project
and its plans and hopes for the future
in relation to the problem of prior-
ities. He emphasized that if the
ANMB persisted in its view that Man-
hattan did not need a higher priority
rating, the entire atomic bomb pro-
gram would be delayed. The time had
come, he continued, for weighing the
relative importance of the atomic pro-
gram against other wartime programs
with which it might interfere and, on
that basis, deciding the best way to
expedite its development. "From my
own point of view," he concluded,
"faced as I am with the unanimous
opinion of a group of men that I con-
sider to be among the greatest scien-
tists in the world, joined by highly
competent engineers, I am prepared
to recommend that nothing should
stand in the way of putting this whole
affair through to conclusion, on a rea-
sonable scale, but at the maximum
speed possible, even if it does cause
moderate interference with other war
efforts." ^^
Bundy showed Bush's memoran-
dum to the Secretary a few days later.
'"Marshall Diary, 29 Aug 42. MDR. Quoted
phrase in Nichols's recollection, recorded in the
diary, of what Clay told him.
»i Memo, Bush to Bundy, 29 Aug 42, MDR. On
Harvey Bundy's position in Stimson's office see
Henry L. Stimson and McGeorge Bundy, On Active
Sennce m Peace and War (New York: Harper and
Brothers, 1947), pp. 343-44. Harvey Bundy, a
Boston lawyer, served as Assistant Secretary of State
under Stimson, from 1929 to 1933.
FIRST STEPS FOR WEAPON DEVELOPMENT
61
but there is no indication that Stim-
son took any immediate action. ^^
Meanwhile, Stone and Webster repre-
sentatives reported that steel compa-
nies had reacted negatively to their
attempts to place orders and the
ANMB warned Manhattan officers
that the rating was scarcely sufficient
to secure the steel needed for the
projected electromagnetic pilot plant.
Stone and Webster experienced a
similar response to its effiDrts to
obtain copper required for the Trail
project. Capt. Allan C. Johnson, as-
signed in August to head the project's
liaison office in Washington, D.C.,
found that WPB and ANMB officials
viewed the AA-3 rating as indicating
that the atomic bomb program was,
as he phrased it, "an unimportant
miscellaneous type."^^ On 12 Sep-
tember, Marshall asked the ANMB for
an AAA rating for the Trail copper.
Three days later, backed by Colonel
Groves, the district engineer went to
see General Weaver of the ANMB
and the following day the board as-
signed the rating, but only with the
understanding that the metal would
be drawn from the normal quota of
the Corps of Engineers. Unfortunate-
ly this delayed other engineer
projects, but Marshall had no alterna-
tive. His action opened the way for
the work at Trail to proceed on
schedule.
Despite the victory on copper pro-
curement for Trail, there was univer-
sal agreement among those con-
cerned with the atomic energy pro-
gram that improvement in the whole
priorities picture was an absolute ne-
cessity if the entire project was not to
founder. Groves felt that DSM leaders
would be able to justify a higher pri-
ority rating only after sites were defi-
nitely selected, plans were firmly
adopted, and actual construction was
under way. He urged Marshall to
move ahead on these matters with all
possible speed. As chairman of the
S-1 Executive Committee, Conant
had concluded that nuclear develop-
ments had become more important
than the highly rated synthetic rubber
program and now believed that they
should be given preference. Bush,
too, saw the immediate need and
called for assignment of a higher pri-
ority. The problem in mid-September
1942, as Groves later recalled it, was
"quite simple." If atomic energy "was
really the most urgent project, it
should have the top priority." ^* The
solution to this problem was not far
off, but it would not come before the
atomic project itself had undergone
major organizational changes.
Procuring Essential Materials
Certain materials essential to the
program had never been in sufficient
demand for industrial or commercial
use to have been produced in quanti-
ties. At the time the Army entered the
atomic project, three such materials
were urgently required: processed
uranium feed material (chemical com-
pounds and metal), highly purified
graphite, and heavy water. The Man-
hattan District had to develop its own
sources of supply for these essential
materials.
12 Stimson Diary, 1 Sep 42, HLS.
13 Marshall Diary, 2 Sep 42, MDR
^* Groves, Now It Can Be Told, p. 22.
62
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Uranium
In early 1942, the OSRD S-1 Sec-
tion's planning board had located suf-
ficient raw uranium ore in North
America to satisfy the anticipated re-
quirements of the project for many
months to come. But the means for
converting this uranium into the vari-
ous kinds of feed materials needed
for the different methods of produc-
ing fissionable materials were almost
wholly lacking. While the OSRD had
taken some steps to secure these ma-
terials, the major task of procurement
remained to be carried out by the
Army.
The most immediate demand was
for processed uranium in the form of
metal for the Metallurgical Laborato-
ry. Raw uranium ore is customarily
refined either as uranium oxide, com-
monly termed black oxide, or as ura-
nium salts. The oxide or the salts can
be converted into metal by additional
processing; however, at the beginning
of 1942, this was still complicated and
expensive and only a limited quantity
was available in the United States —
several grams of good quality pro-
duced experimentally by the Wes-
tinghouse Electric and Manufacturing
Company and a few pounds in the
form of pyrophoric powder manufac-
tured by Metal Hydrides, Inc., of Bev-
erly, Massachusetts. Both Westing-
house and Metal Hydrides had ob-
tained the black oxide from the Cana-
dian Radium and Uranium Corpora-
tion of New York.
Canadian Radium's source was the
mine owned by Eldorado Gold Mines,
Ltd., at Great Bear Lake in Northwest
Canada (Map 2). Eldorado processed
the ore in its refinery at Port Hope,
Ontario, and then marketed it in the
United States through Canadian
Radium. The mine itself had been
closed and allowed to fill with water
in the summer of 1940, because suffi-
cient ore had been stockpiled to satis-
fy anticipated demand for five years.
The uranium for early atomic re-
search in the United States had come
from these stockpiles. When the
OSRD placed a sizable order in 1941,
it obtained additional equipment and
supplies for getting the mine back
into operation and, meanwhile, Cana-
dian Radium continued to supply
amounts of black oxide refined from
the stockpiled ores.^^
As deliveries increased during the
spring of 1942, project scientists in-
tensified their efforts to develop
better methods of purifying the mate-
rial and transforming it into metal.
Experiments at the National Bureau
of Standards demonstrated that an
ether process, long known, could
remove all impurities by a single ex-
traction method, greatly simplifying
the conversion of black oxide into
uranium dioxide, or brown oxide, the
starting point for uranium metal pro-
duction. Arthur Compton arranged
with Edward Mallinckrodt, an old
friend who owned the Mallinckrodt
Chemical Works in St. Louis, to de-
velop large-scale production of brown
oxide, using the ether process. To
ensure an adequate supply of urani-
um oxide, Colonel Nichols directed
Stone and Webster to buy 350 tons
from Canadian Radium to cover the
project's needs for the year ahead. ^^
*^ Smyth Report, pp. 65-66; Hewlett and Ander-
son, Vw iVorld. p. 65; MDH, Bk. 7, Vol. 1, "Feed
Materials and Special Procurement," p. 3.1, DASA.
>« MDH, Bk. 7, Vol. 1, App. F2, DASA; Marshall
Diary, 7 Jul 42; MDR; DSM Chronology, 7 Jul 42,
Continued
MAP 2
64
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Thanks to these measures, by the fall
of 1942 Mallinckrodt's production of
brown oxide from Eldorado's ore had
increased sufficiently to supply the
project's requirements. Mallinckrodt
and other chemical firms converted
the brown oxide into uranium tetra-
fluoride, or green salt, the feed mate-
rial employed in most uranium metal-
making processes. Westinghouse had
abandoned a photochemical method
in favor of a faster process using
green salt and soon was producing at
a satisfactory rate. At first Metal Hy-
drides was less successful, failing to
provide a metal of sufficient purity
with pyrophoric powder.
Intensive research during the
summer at Massachusetts Institute of
Technology, Iowa State College, and
the Bureau of Standards had devel-
oped new and improved metal-
making techniques. Most important
was a steel-bomb process for reduc-
ing green salt to metal, employing
highly purified calcium — and later
magnesium — as a reduction agent. By
early 1943, using this method, Iowa
State had developed a manufacturing
program and Metal Hydrides had sig-
nificantly increased its output. New
Army contracts with the Electro Met-
allurgical Company of Niagara Falls,
New York, a subsidiary of Union Car-
bide and Carbon Corporation, and
with E. I. du Pont de Nemours and
Company further increased produc-
tion, and the acute metal shortage
was largely relieved by 1944.^"^
Sec. 20, OROO; Memo, [RuhofT] to Groves, sub:
Summary of Ore Contracts, 15 Feb 44, Admin Files,
Gen Corresp, 161 (African Metals), MDR; Compton,
Atomic Qimt. pp. 93-95.
i^MDH, Bk. 7, Vol. 1, pp. 10.1-10.9, DASA;
Hewlett and Anderson, Neu^ World, pp. 87-88 and
293-94; Memo, Nichols to Groves, 21 Dec 44,
In September 1942, Colonel Mar-
shall placed Capt. John R. Ruhoff in
charge of all uranium metal produc-
tion. Ruhoff had been a chemical en-
gineer at Mallinckrodt, assisting in the
uranium oxide program, and when he
was inducted into the Army that
summer, Manhattan officials had ar-
ranged his assignment to the District
as its area engineer in St. Louis, with
headquarters at the Mallinckrodt firm.
Then in October, Marshall formed a
Materials Section in the District office
to administer the whole feed materi-
als program. He selected Lt. Col.
Thomas T. Crenshaw of the Califor-
nia Area Engineers Office to head the
section and had Ruhoff transferred to
New York to serve as Crenshaw's
assistant.^®
Meanwhile, project leaders knew
the reopened Eldorado mine would
probably not be able to produce and
ship ore for at least another year and
that stockpiles at the Port Hope refin-
ery were insufficient for the 350 tons
of oxide ordered for the project in
July. They urgently needed a source
that could provide high-grade urani-
um on short notice. Such a source, in
fact, had long been close at hand.
Late in 1940, when German seizure of
much of Africa appeared likely, Edgar
Sengier — head of Union Miniere with
whom Alexander Sachs of Wall Street
and Harold Urey of Columbia had
earlier conferred — had ordered ship-
ment of approximately 1,200 tons of
high-grade ore from the Shinkolobwe
stockpile in the Congo via Portuguese
West Africa to New York. Storing the
Admin Files, Gen Corresp, 319.1, MDR; DSM Chro-
nology. 4 Sep 42, Sec. 20, OROO.
18MDH, Bk. 7, Vol. 1, pp. 1.16-1.17, DASA;
Compton, Atomic Qufst, pp. 95-96.
FIRST STEPS FOR WEAPON DEVELOPMENT
65
ore in a warehouse in Port Richmond
on Staten Island, Sengier apparently
made no effort to call it to the atten-
tion of American government officials
until after the United States entered
the war. Attending a meeting in
Washington, D.C., in March 1942, he
mentioned his Staten Island cache to
Thomas K. Finletter and Herbert
Feis, State Department officials con-
cerned with international economic
affairs, but neither state nor defense
officials indicated any immediate in-
terest in the ore — why is not entirely
clear. Nevertheless, it was soon
common knowledge in trade circles
that Sengier was interested in selling
the ore.^^
It was early September 1942, how-
ever, before word of the Congo ore
reached Manhattan District officials.
The Standard Oil Development Com-
pany, working on the centrifuge proc-
ess, had opened negotiations with
Sengier for procurement of the ura-
nium oxide it needed. Through
Standard Oil, Metallurgical Laborato-
ry staff members learned of the
Staten Island ore and sought to pur-
chase additional quantities. Through
his Union Miniere outlet in New
York, the African Metals Corporation,
Sengier had submitted a request to
the State Department for a license to
ship ore from Port Richmond to El-
dorado's refinery in Ontario, for
processing into black oxide. On 7
September, Colonel Nichols received
a query from Finletter concerning the
request from African Metals — his first
inkling of the existence of the Congo
ore. Nichols acted promptly; he met
with Finletter and Feis at the State
Department on 12 September and
then dispatched Captain Ruhoff to
consult with Stone and Webster in
Boston and Sengier in New York,
while he himself hurried to California
for the meeting of the OSRD S-1 Ex-
ecutive Committee on the thirteenth
and fourteenth. The committee rec-
ommended that all Sengier's ore be
acquired. 2° Thus, at just the time
when an acute shortage of uranium
threatened to seriously delay the
atomic project, the store of rich
Congo ore became available to pro-
vide most of its wartime
requirements.
Graphite, Heavy Water, and Silver
Either highly purified graphite or
heavy water to use as a moderator in
the atomic pile was essential for the
plutonium program and the other
work under way at the Metallurgical
Laboratory. Ample graphite was al-
ready being produced commercially
in the United States; the question was
one of "purity and priority." The
main quality required in the graphite
was low-neutron absorption, which
was directly dependent on its purity.
Unfortunately, the standard product
had too many impurities, particularly
boron. Scientists at the National
Bureau of Standards traced the boron
in commercial graphite to the coke
used for its production. By substitut-
ing petroleum for coke and altering
certain manufacturing techniques,
both National Carbon Company and
Speer Carbon Company were soon
•9 Groves, Sow It Can fif Told. pp. 33-35; Hewlett
and Anderson, Xnf World, pp. 85-86; Lewis L,
Strauss, Mm and Den.sions (Garden Citv. N.\ '.: I^ou-
bleday and Co., 1962), pp. 181-82.
2° Groves, A'oir // Can Be Told. p. 36; Marshall
Diar^. 7 and 12-13 Sep 42, MDR; DSM Chronology,
13 Sep 42, Sees. 2(e) and 20, OROO.
66
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
producing highly purified graphite
that absorbed 20 percent fewer neu-
trons and satisfied the stringent re-
quirements of the Metallurgical Labo-
ratory. With the WPB's cooperation
in arranging the necessary priorities,
the OSRD was able to place large
orders with these firms, essentially
solving the atomic energy program's
graphite problem. ^^
Heavy water was another matter.
Scientific leaders knew that heavy
water could not be available in large
quantities for many months or even
years. Researchers at the Metallurgi-
cal Laboratory had directed their pri-
mary interest toward developing a
uranium-graphite pile, viewing heavy
water as an alternate solution should
the problems with graphite prove
insuperable. Meanwhile, the OSRD
moved ahead with its plans for a
heavy water plant at Trail (see Map 2),
but priority difficulties delayed con-
struction and the plant did not begin
operating until June 1943. ^^
A store of approximately 400
pounds — almost all the heavy water in
the world outside of that being pro-
duced by the German-controlled
Norsk Hydro plant in southern
Norway — was in the hands of British
scientists. This heavy water had an in-
teresting history. Nuclear research in
France by Frederic Joliot-Curie and
his collaborators, Hans von Halban
and Lew Kowarski, had concentrated
on using heavy water as a moderator
to achieve a slow-neutron reaction. In
'^ Smyth Report, pp. 65-68 (quotation from p.
68); Compton, Alomir Qimt, pp. 97-98; MDH, Bk. 1,
Vol. 4, "Auxiliary Activities," pp. 12.7-12.9, DASA.
22 Smyth Report, p. 65; Compton, Atomic Quest, pp.
79 and 98-99; Marshall Diary, MDR, and DSM
Chronology, OROO, for the summer of 1942,
passim; MDH, Bk. 3, "The P-9 Project," pp. 4.1-4.7
and 5.4, DASA.
March 1940, just before the German
attack on Norway, Joliot-Curie had se-
cured about 160 to 165 liters (169 to
174 quarts) of heavy water from
Norsk Hydro. Shortly before the fall
of Paris in mid-June, he sent von
Halban and Kowarski with most of
this precious store to England, where,
after a hazardous trip, the two men
joined the growing team of British
and refugee scientists doing atomic
research. Work with this stock of
heavy water had contributed to the
optimistic British reports on a urani-
um-heavy water system. When the
group relocated to Canada at the end
of 1942, the heavy water went
along. 2^
The need for large quantities of
silver had not been anticipated. At
the Army-OSRD meeting on 9 July,
Ernest Lawrence of the University of
California, Berkeley, pointed out that
he needed several thousand tons of
copper for magnet coils. Because
copper was high on the list of critical
materials and might be impossible to
obtain, he thought that silver, a good
electrical conductor and not on the
critical materials list, would do as
well. Accordingly, Colonel Nichols
23 H. D. Smyth, "British Information Service
Statement, 'Britain and and the Atomic Bomb,'
August 12, 1945," in Atomic Energy for Military Pur-
poses, 8th ed. (Princeton, N.J.: Princeton University
Press, 1948), p. 276; Cowing, Britain and Atomic
Energy, pp. 49-51; Crowther and Whiddington, Sci-
ence at War, pp. 144-45 and 148; Sir George Thom-
son, "Anglo-U.S. Cooperation on Atomic Energy,"
American Scientist, 41 (Jan 53): 77-78 and 80; Glas-
stone. Sourcebook on Atomic Energy, 3d ed. (Princeton,
N.J.: D. Van Nostrand Co., 1967), n. on p. 513. The
figure given for the amount of heavy water that the
French secured from Norsk Hydro varies somewhat
in the different accounts. Most state that there were
about 160 to 165 liters, an amount that would have
weighed about 176 to 182 kilograms (388 to 410
pounds).
FIRST STEPS FOR WEAPON DEVELOPMENT
67
visited Under Secretary of the Treas-
ury Daniel W. Bell to find out if silver
would be available. Although Nichols
did not provide specific details of the
DSM project, Bell appeared receptive.
"How much silver do you want?" he
asked. "About fifteen thousand tons,"
answered Nichols. Visibly startled,
Bell exclaimed: "Young man, ... I
would have you know that when we
talk of silver we speak in terms of
ounces." ^'*
Ounces or tons, that the DSM
project would get what it wanted was
soon clear. With relatively good
speed, considering the need for secre-
cy and the number of clearances re-
quired, the Department of the Treas-
ury, the ANMB, and the WPB ap-
proved the necessary arrangements.
On 29 August, in a letter to Secretary
of the Treasury Henry Morgenthau,
drafted jointly by Manhattan and
Treasury representatives, Secretary of
War Stimson requested the transfer
of 175 million fine troy ounces (about
6,000 tons of silver) "to the War De-
partment to be used as a substitute
for copper" for an "important
project" that was "highly secret." "At
this time," read Stimson's letter, "the
interests of the Government do not
permit my disclosing the nature of
the use." ^^
**As related by Compton, Atomic Quest, p. 157.
Subsection based on Marshall Diary, 9 Jul-29 Aug
42, MDR; MDH, Bk. 5, Vol. 4, "Silver Program,"
DASA; Groves, Now It Can Be Told, pp. 107-09.
Groves gives the impression that Marshall himself
visited Under Secretary Bell, but Marshall s 3 Aug
42 entry in his diary indicates that he sent Nichols
to confer with Bell on the question of securing
silver for the Manhattan Project.
^*Ltr, Stimson to Secy Treas, 29 Aug 42, in
MDH, Bk. 5, Vol. 4, App. B-1, DASA.
The endorsement of the Treasury
Department on a second letter that
day constituted an agreement be-
tween the two agencies for the trans-
fer. It provided that the silver would
remain in the United States; would be
returned to the Treasury in five years,
or sooner if required; would be uti-
lized in government-owned plants es-
sential to the war effort; and would
be protected against loss. Subsequent
agreements in 1943 and 1944 would
raise the quantity involved to roughly
14,700 tons, worth about $304 mil-
lion. ^^ Under constant heavy guard,
the bars of silver were transferred —
after being melted, cast in cylindrical
billets, rolled into strips, and finally
fabricated into magnet coils. Because
the electromagnetic process seemed
the most promising in the summer of
1942, this turn of events was indeed
encouragmg.
Site Selection
Project leaders in the summer of
1942 were well aware that acquisition
of suitable sites was as important to
the success of the atomic program as
obtaining adequate priorities. At the
Army-OSRD meeting of 25 June, they
had confirmed an earlier decision to
build a heavy water plant at the Trail
site and approved location of the pro-
posed plutonium pilot plant in the
Argonne Forest near Chicago. The
Army delayed actual acquisition of a
specific area in the Argonne Forest
preserve pending receipt of further
^^The Atomic Energy Commission did not return
the last of the 14,700 tons of silver to the U.S.
Treasury until May 1970, a quarter of a century
later. See news item in Washington Post, 29 May 70.
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Silver-wound Magnet Coils for the Electromac.np.tk: Process
information from the Metallurgical
Laboratory concerning the size of site
needed for the plutonium pilot plant.
In early July, Colonel Nichols ob-
tained clarification of the specific Ar-
gonne requirements in discussions
held in Chicago with Stone and Web-
ster officials and Compton and his
staff, opening the way for lease in
August of 1,000 acres from Cook
County. At the same time, the Univer-
sity of Chicago agreed to provide an
additional acre on the campus for
future construction of additional labo-
ratory space. To administer the site
acquisitions and oversee construction
activities, Colonel Marshall estab-
lished the Chicago Area Engineers
Office in August and assigned Capt.
James F. Grafton as area engineer. ^^
For the main production plants,
Colonels Marshall and Nichols and
representatives of Stone and Webster
and the Tennessee Valley Authority
(TVA) began a survey of possible
sites in the Knoxville area on I July.^®
"Marshall Diarv, 6-7, 10, 13, 17 Jul and 13 Aug
42, MDR; MDH, Bk. 4, Vol. 2, "Research," Pt. 1,
pp. 2.5-2.7 and 7.2, DASA.
^* Paragraphs on Tennessee site based on Mar-
shall Diarv, 1-3, 9, 10, 14. 15. 23, 29, 31 Jul and 3,
17-19, 26-27 Aug and 2-5, 10 Sep 42, MDR; MDH,
Bk. 1, Vol. 10. "Land Acquisition CEW." pp. 2.3-
2.4 and 2.20-2.21, and Vol. 12, "Clinton Engineer
Works," pp. 2.2-2.4, DASA; DSM Chronology, 9,
30 Jul and 26 Aug 42, each Sec. 2(e), OROO;
Groves, Xow It Can Be Told, p. 15; Memo, Crenshaw
to Dist Engr, sub: Weekly Progress Rpt, 22 Aug 42,
Admin Files, Gen Corresp, 001 (Mtgs), MDR.
FIRST STEPS FOR WEAPON DEVELOPMENT
69
{See Map 1.) Requisite conditions for
the site were a nearby source of a
large amount of continuous electric
power, enough for a fair-sized city;
availability of a very large quantity of
water for cooling and processing as
well as construction and operating re-
quirements; and proximity to a main
line railroad and good access roads,
to ensure delivery of heavy construc-
tion materials and supplies. Topogra-
phy, too, was important. An area
bounded by natural barriers, such as
rivers and hills, would be securer and
individual plant sites separated by
ridges far safer in case of an explo-
sion, although the slopes of these
ridges should be gentle enough for
easy construction. The substratum
should provide adequate foundation,
yet not be so full of rocks as to make
excavation unnecessarily difficult and
time-consuming. Finally, there should
be adequate and suitable space for a
town with facilities for housing and
serving thousands of workmen and
technicians and their families.
The survey and subsequent investi-
gations filled nearly three days,
during which Colonel Marshall and
his colleagues examined several possi-
ble sites. None seemed at first glance
exactly right, but one, at least, had
possibilities. TVA officials seemed
certain that the 150,000-kilowatt
power requirement of the plants
could be met if Marshall could hasten
the delivery of some badly needed
heavy-generating equipment. As
project priorities were indefinite at
this time, Marshall agreed to look
into the matter; however, he empha-
sized that because an entirely suitable
site had not been found, he would
have to consider an area near Spo-
kane, Washington, where the Bonne-
ville Power Administration might
more easily meet his requirements.
Site problems were a key issue at
the next Army-OSRD meeting on
9 July. John R. Lotz, head of Stone
and Webster, reported that his firm
had surveyed the Spokane area and
concluded that it lacked sufficient
transmission lines to supply the re-
quired power. The group reaffirmed
in principle its earlier decision for a
site in Tennessee. Also, Marshall and
the Stone and Webster engineers
agreed that half of the 200 square
miles previously believed necessary
would be adequate, and even a site of
this size would not be required were
it not for the plutonium plant. The
danger of highly radioactive fission
products escaping, or even of a nucle-
ar explosion, dictated building this
plant 2 to 4 miles from any other in-
stallation and an equal distance in
from the boundaries of the site.
The 9 July Army-OSRD meeting
ended without a decision on a specific
Tennessee site or any indication of
when one might be made. Nor was
there, for that matter, any clear fore-
cast of scientific developments that
might help determine the choice.
Only a tentative and, as soon became
clear, excessively optimistic construc-
tion schedule emerged. As Colonel
Groves pointed out to Colonel Mar-
shall that afternoon, a general air of
vagueness seemed to pervade the
whole atomic project, with the start-
ing dates for development of many of
its phases still too indefinite. He
urged Marshall first to insist upon the
prompt and complete programming
of all contemplated steps and then to
see that this schedule was adhered to
as far as possible. An obvious neces-
70
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
sity was a swift decision on the major
production site.
Shortly thereafter, Marshall and
Stone and Webster officials agreed to
try to obtain a site in Tennessee by
10 August so that construction on the
project administration building and
some housing facilities could begin,
even if plant construction could not.
Stone and Webster drew up a formal
site report on the most promising
area, about 12 miles west of Knox-
ville, and prepared maps indicating
the exact tracts of land to be ac-
quired. To avoid having a public
highway run through the site, an ob-
vious security hazard, the firm also
studied the possibility of relocating
Tennessee 61, which then crossed the
northern portion of the area. The
Ohio River Division of the Engineer
Department then prepared an ap-
praisal of the cost of acquiring the ap-
proximate 83,000 acres in the area,
comprised of land in the Roane,
Loudon, Knox, and Anderson Coun-
ties of Tennessee. On 30 July, at the
next Army-OSRD meeting, Colonel
Marshall reviewed the steps taken
toward acquisition of the site and the
entire group agreed that the Tennes-
see Valley seemed the best location,
although some of the scientists felt
that a site farther east in the Great
Smoky Mountains, where the climate
was not as warm, might prove more
desirable in the future for a proposed
permanent central laboratory.
Hardly had the way been cleared
for immediate acquisition of the Ten-
nessee site when Colonel Marshall,
with the approval of General Robins,
decided to postpone carrying it out.
He knew that the site and making the
necessary pre-construction changes
and improvements, not including re-
location of Tennessee 61, would cost
an estimated $4.25 million and
require resettlement of some 400
families living in the area. Marshall
reasoned there could be no harm in
delaying acquisition until more defi-
nite information on the plutonium
process was available. At worst, a
postponement would cause only a few
weeks delay, for the Engineers' Real
Estate Branch was sure that the land
could be acquired to the point of
right of entry within ten days of his
order to proceed. Meanwhile, he
would try to get the TVA the needed
priorities and, when scientific devel-
opments warranted, order acquisition
of the site.
Although Ernest Lawrence indicat-
ed he was now willing to have the
full-scale electromagnetic separation
plant built in Tennessee, locating the
plants in the Shasta Dam area of Cali-
fornia was seriously studied and the
proposal was not completely aban-
doned until early September. Never-
theless, Colonel Marshall felt he was
"about ready to recommend purchase
of at least part of the Tennessee site"
by 26 August, the next S-1 Executive
Committee meeting. When the com-
mittee, however, delayed a decision
on production facilities, acquisition of
the site was postponed, despite the
urgings of Robins and Groves to the
contrary. ^^
Reaching Decisions: The Meeting at
Bohemian Grove
About 10-12 miles northwest of
San Francisco, across the Golden
Gate and amidst the giant redwood
=>« Marshall Diary, 26 Aug 42, MDR.
FIRST STEPS FOR WEAPON DEVELOPMENT
71
trees of the Muir Woods National
Monument, there is a beautiful area
known as the Bohemian Grove. In
this impressive setting, not too far
from Lawrence's laboratory at the
University of California, Berkeley, the
S-1 Executive Committee met on 13
and 14 September 1942 to consider
at length and in detail the major
problems of the DSM project. ^°
Present along with the committee at
this fifth Army-OSRD meeting were
Colonel Nichols and the California
area engineer, Maj. Thomas T. Cren-
shaw— both in civilian clothes to mask
from casual observers the Army's in-
terest in the work at Berkeley — as well
as J. Robert Oppenheimer and two
other scientific consultants.
The first major decision was to ac-
quire the Tennessee site immediately.
But on which plants could construc-
tion begin? The gaseous diffusion and
centrifuge separation methods still
appeared feasible and promising, but
neither had produced any appreciable
amounts of U-235 and both would re-
quire hundreds or thousands of pro-
cess stages for large-scale separation.
The plutonium process had yet to see
a self-sustaining chain reaction, much
less production and separation of plu-
tonium. Thus far, only the electro-
magnetic method had achieved signif-
icant production. Because one elec-
tromagnetic unit could separate 10
miUigrams of U-235 per day, it was
not inconceivable that fifty thousand
units could separate a pound, and, in
the same period, a billion units could
separate a ton. To design and build
'"Section on Bohemian Grove meeting based on
Compton, Atomic Quest, pp. 150-54 and photograph
facing p. 140; Marshall Diary, 13 Sep 42, MDR;
DSM Chronology, 13-14 Sep 42, Sec. 2(e), OROO;
Smyth Report, pp. 140-41.
these units would be difficult and ex-
pensive, and the full-scale plant
would require considerably more re-
search and engineering development
as well as the training of large num-
bers of skilled operators. But the
process appeared sufficiently feasible
to justify starting work on a produc-
tion plant. After a visit to Lawrence's
laboratory, where the Executive Com-
mittee viewed experimental separa-
tion units in actual operation, the
group agreed to proceed with the
construction of a large-scale electro-
magnetic plant.
This 100-gram-per-day (the output
specified in the 17 June program)
electromagnetic installation would be
erected in Tennessee at an estimated
cost of $30 million. Design and pro-
curement for the plant were to begin
immediately, subject to cancellation at
any time before New Year's Day of
1943 if further developments so war-
ranted. On that date, the group
hoped, design would be frozen and
construction could begin. At the same
time, a small electromagnetic pilot
plant was projected for Tennessee;
however, at a later date, this plan was
dropped.
The experimental plutonium plant
planned for the Argonne Forest site
was now switched to Tennessee. This
change was necessitated by growing
evidence that operations at this
plant — including chemical studies on
extracting the plutonium, training of
operators, and testing of equipment
and processes — would be on a scale
too large for the Argonne site. Stone
and Webster would arrange a subcon-
tract with a chemical company to
develop and operate the chemical en-
gineering equipment needed for plu-
72
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
tonium separation. Now the experi-
mental pile from the Metallurgical
Laboratory could be relocated from
the heart of south Chicago to the
safer Argonne location. In further
support of the plutonium project,
construction of the heavy water plant
at Trail would be pushed as rapidly as
necessary to complete this work by
I May 1943.
The meetings on 13 and 14 Sep-
tember brought an end to much of
the indecision that the course of
events had imposed on the atomic
energy program during the summer
of 1942. The decisions reached at the
Bohemian Grove, in the words of one
participant, "were destined to shape
the entire future development of the
project.
Indeed, even as these de-
cisions were taking form, changes
were under way that would have a
profound effect on the organization
and direction of the atomic bomb
program. The early period of Army
participation, marked by a slow and
deliberate entrance into the project,
was coming to an end.
^'Compton, Atomic Qiml, p. 150.
CHAPTER IV
General Groves Takes Command
As the son of an Army chaplain,
Leslie R. Groves spent many of his
boyhood years on different military
posts in the western United States.
During these formative years, young
Groves often listened to the old Indian
fighters who frequented the posts
recount many a stirring tale of how
the West was won. Their tales fired
the boy's imagination, yet he lament-
ed that those days were past and that
there were no more frontiers left for
him to conquer. He could not know,
of course, that the opportunity to re-
alize his youthful dreams to lead in
the exploration and conquest of a
new frontier — his to be a scientific
and technical one whose develop-
ments would have a decisive impact
on the future and fate of all man-
kind— would come as the result of the
administrative reorganization of the
American atomic energy program in
the summer and fall of 1942 and his
selection as a 46-year-old career Army
officer to be officer in charge of the
project.^
Reorganization and the Selection
of Groves
On 17 June 1942, President
Roosevelt had approved the propos-
Groves, Now It Can Be Told, p. 415.
als, made by Vannevar Bush and
James B. Conant to the Top Policy
Group, that the Army assume overall
direction of the atomic program and
that the Joint Committee on New
Weapons and Equipment (JNW) es-
tablish a special subcommittee to con-
sider the military application of
atomic energy. Bush, however, who
served as JNW chairman, did not see
any need for immediate appointment
of the subcommittee and thus waited
until 10 September to propose to
Secretary of War Stimson that a small
group of officers be assigned the task
of considering possible strategic and
tactical uses of atomic energy. When
Stimson informed Army Chief of Staff
General George C. Marshall of Bush's
request, the general indicated that he
felt it was premature and expressed
grave concern about the increasing
problem of security as more and
more people became aware of the ex-
istence of the atomic energy program.
Despite Marshall's reservations, it
soon became evident that a special
committee was needed not only to
consider the ultimate uses of atomic
energy but also to determine general
policies and supervise the growing
project. The sequence of events in
September 1942 that led to formation
74
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
of a policymaking committee and to
strengthening the mihtary leadership
of the project seems to have been
about as follows. ^
Early that month — almost certainly
before learning the results of the Bo-
hemian Grove meeting and possibly
even before Bush made his recom-
mendations to Stimson — General
Styer discussed the status of the
atomic energy program with his com-
mander, Lt. Gen. Brehon B. Somer-
vell, Services of Supply (SOS) com-
manding general, and then with
General Marshall. In outlining devel-
opments in the program, he empha-
sized that the Army's responsibilities
were now becoming increasingly
large. Then on the sixteenth, or pos-
sibly a day or so earlier. Bush, Styer,
and Somervell met to discuss the top-
level organization of the atomic
project. Under Secretary of War
Robert P. Patterson also may have
been present, or perhaps Somervell
saw him separately. At any rate, two
decisions were reached: A policy com-
^ Description of events through 22 Sep 42 recon-
structed from Memo, Bush and Conant to Wallace,
Stimson, and Marshall, sub: Atomic Fission Bombs,
13 Jun 42, Incl to Ltr, Bush to President, 17 Jun 42;
Ltr, Bush to Styer, 19 Jun 42. Both m HB Files, Fldr
6, MDR. Stimson Diary, 10 Sep 42, HLS. Memo,
Bundy to Stimson, 10 Sep 42, HB Files, Fldr 5,
MDR. 1st Ind, Styer to Chief of Mil Hist, 15 Aug
61, to Ltr, Chief of Mil Hist to Styer, 17 Jun 61,
CMH. Groves, AW // Can Be Told. pp. 3-5 and 21-
23. Marshall Diary, 16-21 Sep 42, OCG Files, Gen
Corresp, Groves Files, Misc Recs Sec, behind Fldr 5,
MDR. Memo (penciled note), VB [Bush] to Bundy,
in envelope marked 9/17, HB Files, Fldr 7, MDR.
Diary of Lt Gen Leslie R. Groves (hereafter cited as
Groves Dairy), 17-22 Sep 42, LRG. The diary was
an office record maintained by Groves's secretaries
to list visits, telephone calls, etc. It covers the
period from 1 Jan 42 to 7 Nov 45. Entries of later
years are more complete than for the early period of
the Manhattan Project. No entry was written by
Groves, nor was each one necessarily seen by him.
It appears to be accurate, although incomplete.
mittee would be formed to oversee
the program, and an Army officer
would be chosen to carry out the
policies established by this committee.
Anxious to counteract General So-
mervell's tendency to favor giving the
Army dominant control of the
project, thus relegating the scientists
to a lesser role. Bush proposed that
the committee should be organized
first. Styer and Somervell, however,
wanted to choose an officer immedi-
ately. The obvious choice was Styer
himself, but the job was a full-time
one and Somervell was unwilling to
lose his chief of staff. Styer then,
without hesitation, proposed Colonel
Groves, a recommendation readily ap-
proved by Generals Somervell and
Marshall.
In addition to his impressive gener-
al qualifications,^ another factor made
^ Leslie R. Groves entered the U.S. Military Acad-
emy in 1916 following three years as a student at
the LJniversity of Washington (1913-14) and the
Massachusetts Institute of Technology (1914-16).
His class at West Point did not graduate until No-
vember 1918, too late for him to see active duty in
World War I. Assigned to the Corps of Engineers,
for more than a decade after the war he held a vari-
ety of engineer positions in the United States,
Hawaii, and Nicaragua. During the 1930's, he at-
tended the Command and General Staff School at
Fort Leavenworth, Kansas, and the Army War Col-
lege in Washington, D.C., and also served in the
Office of the Chief of Engineers (OCE), on the Mis-
souri River Division staff, and on the War Depart-
ment General Staff. Beginning in 1940, he held im-
portant administrative posts in the rapidly expand-
ing military construction program, moving quickly
from the rank of captain to full colonel. As chief of
the Operations Branch, Office of the Quartermaster
General (OQ_MG), he acted as special assistant to
the quartermaster general for Army construction.
When the Construction Division was transferred
from OQMG to OCE at the end of 1941, he became
deputy chief of the division under Brig. Gen.
Thomas M. Robins. Having an excellent background
of experience on a variety of major construction
projects, the best known being the huge Pentagon
Continued
GENERAL GROVES TAKES COMMAND
75
Groves the logical choice to head the
atomic project: As deputy chief of the
Engineers' Construction Division, he
had spent considerable time advising
District Engineer Marshall in his
quest for power resources and in his
selection of sites for the Manhattan
District facilities. Furthermore, with
military construction in the United
States past its wartime peak, Groves
was seriously considering taking an-
other assignment, probably overseas.
On the morning of 17 September,
Groves had to testify on a military
housing bill before the House Military
Affairs Committee. When he left the
hearing room, he encountered Gener-
al Somervell and learned of his new
assignment. Groves later recalled that
his first reaction was one of great dis-
appointment at the prospect of miss-
ing overseas duty. Somervell, un-
doubtedly sensing Groves's lack of
enthusiasm for his new job, expressed
the opinion that a successful conclu-
sion to the atomic energy program
could well have a decisive impact on
winning the war.'*
Shortly after leaving Capitol Hill,
Groves, accompanied by Colonel
Nichols (Colonel Marshall was on the
West Coast), reported to General
Styer for orders. Styer explained the
building, Groves earned the reputation among his
professional colleagues as an able, aggressive, and
industrious ofTicer who repeatedly demonstrated su-
perior engineering, administrative, and organiza-
tional abilities. See 1st Ind, Styer to Chief of Mil
Hist, 15 Aug 61, to Ltr, Chief of Mil Hist to Styer,
17 Jul 61, CMH; WD Press Release, Oct 46, CMH;
Groves, Now It Can Be Told, p. 465; Fine and Rem-
ington, Corps of Engineers: Construction, pp. 158-59
and 254-55. A detailed listing of Groves's military
assignments may be found in Cullum, Biographical
Register, 6B:2010, 7:1338, 8:382, 9:271.
■• Groves, Sow It Can Be Told, pp. 3-4; Fine and
Remington, Corps of Engineers: Construction, pp. 586-
603.
new high-level organization of the
project and Groves's role in it.
Groves was to be relieved of his posi-
tion in the Construction Division. He
was, however, to continue to exercise
control over construction of the
nearly completed Pentagon. In this
way he would avoid arousing public
curiosity at his sudden absence from
this project, which was viewed with
great interest by Congress. After the
Pentagon job was finished in a few
months. Groves was to devote himself
entirely to the atomic energy
program.
The directive for Groves's new as-
signment— Styer had consulted with
him on its wording — ordered the En-
gineers chief, General Reybold, to re-
lieve him "for special duty in connec-
tion with the DSM project." ^ The di-
rective emphasized, however, that
Groves was to operate closely with
the Construction Division and other
elements of the Corps of Engineers.
He was to have full responsibility for
administering the entire project and
to make immediate arrangements for
priorities, for formation of a commit-
tee to formulate military policy gov-
erning use of the project's product
output, and for procurement of the
Tennessee site as the location for its
major activities. He was also instruct-
ed to make plans for the organization,
construction, operation, and security
of the project and, after they had
been approved, to undertake the
measures necessary to carry them out.
^ Memo, Somervell to Chief of Engrs, sub: Re-
lease of Groves for Special Assignment, 17 Sep 42,
OCG Files, Gen Corresp, MP Files, Fldr 25, Tab B,
MDR. Directive to Groves reprinted in his book Now
It Can Be Told, App. I. pp. 417-18.
76
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Styer also informed Groves that
General Marshall had directed that he
be promoted to the grade of brigadier
general. As the list of new promo-
tions would be out in a few days.
Groves suggested (and Styer agreed)
that he should not take over the
project officially until he had received
his star. "I thought that there might
be some problems in dealing with the
many academic scientists involved in
the project," he wrote later, "and I
felt that my position would be strong-
er if they thought of me as a general
instead of a promoted colonel." The
new military chief of the atomic
project, however, seems not to have
considered that for several months
Colonel Marshall and other officers
had been dealing successfully with
project scientists in spite of their rela-
tively low military rank.^
Following the conference with
Styer, Groves delivered the directive
covering his new assignment to Gen-
eral Reybold and also stopped in the
office of his erstwhile chief. General
Robins, to brief him on its contents.
He then sat down with Colonel Nich-
ols to learn from the deputy district
engineer more about the actual status
of the project. He was not very
pleased with what he learned. "In
* Groves received the grade of brigadier general
on 23 Sep 42 and, subsequently, the grade of major
general on 9 Mar 44, a rank he continued to hold
for the rest of the time he served as commander of
the Manhattan Project. He moved up to the rank of
lieutenant general, effective 24 Jan 48, but shortiv
thereafter (29 Feb 48) retired from active dutv on
his own application. .At the time of his retirement.
Congress enacted a special measure giving him the
honorary rank of lieulcnanl general, effective 16 Jul
43, in recognition of his services in directing the
atomic bomb project. .See C.ullum, Bwgtophiral Regis-
ter. 9:27 1 . Quotation is from Groves, Xow It Can Be
Told. p. 5
fact," he recalled subsequently, "I
was horrified. It seemed as if the
whole endeavor was founded on pos-
sibilities rather than probabilities." "^
On the afternoon of the same day
(17 September), Groves and Nichols
called on Bush. Unfortunately, no one
had yet officially informed the OSRD
director of Groves's assignment to the
project. Furthermore, Bush was dis-
turbed that this action was additional
evidence that Somervell was intent on
having the Army take over control of
the atomic energy program to the
complete exclusion of the scientists.
Consequently, he was most reluctant
to answer Groves's questions and the
whole conversation was somewhat
one-sided, relatively brief, and, in
Groves's words, "far from satisfactory
for both of us." ®
As soon as Groves departed, Bush
hurried over to see Styer. He repeat-
ed his views that the proposed policy
committee should choose its own
agent; he "doubted whether he
[Groves] had sufficient tact for such a
job." Bush recollected later that Styer
disagreed with him on the first point
and, while acknowledging that Groves
was "blunt etc [he] thought his
other qualities would overbalance."
Styer went on to explain that Groves's
assignment already had been approved
by General Marshall. Returning to his
office. Bush wrote to Harvey Bundy,
Stimson's assistant for scientific mat-
ters: "I fear we are in the soup." ®
^ Groves, Xow It Can Be Told. p. 19.
*Ibid., p. 20. See also Hewlett and Anderson, \eu<
World p. 81.
'Paragraph on Bush's reaction to Groves's assign-
ment based on Memo. Bush to Bundv, in envelope
marked 9/17, MDR
GENERAL GROVES TAKES COMMAND
77
For the next few days, Groves was
busy preparing for his new assign-
ment, including conferences with
Colonel Marshall and Generals Styer
and Robins. Robins made a point that
the Engineer Department of the
Corps of Engineers would have no
further responsibility for the program
and that the Manhattan District would
henceforth report to Groves rather
than to the Engineers chief.
On 21 September, Colonels Groves
and Marshall called on Bush. This
time the OSRD director was cordial
and open. He explained his earlier re-
luctance to talk freely, then briefed
Groves thoroughly on the scientific
and historical background of the
project and cautioned him on the
need for tightening security measures.
Thus, from what Groves himself later
termed an "inauspicious beginning,"
relations between the two leaders of
the atomic project soon grew into a
firm and fruitful friendship, with each
expressing the greatest respect for
the other's capabilities.^*^
On the afternoon of 23 September,
a few hours after Groves had been
sworn in as a brigadier general and
had taken official charge of the
atomic project, he went to a meeting
'"Qiioted phrase from Groves, \oit< It Can be Told.
p. 21. Bush acknowledges in his memoirs that Styer
"was right when he insisted that Groves was the
man for the job" [see \'annevar Bush, Pieces of the
Action (New York: W'illliam Morrow, 1970), p. 61].
Groves implies in his account (pp. 21-22) that his
second meeting with Bush occurred on 19 Septem-
ber, whereas the Marshall Diary, 21 Sep 42, MDR,
indicates that the meeting actually took place on the
twentN-fiist. Groves saw Styer again on the twenty-
second, but he fails to mention this meeting in his
book. Curiously enough, however, the two pages de-
scribing the events of that date are missing from
both copies of the Marshall Diary, and although the
Groves Diary, 22 Sep 42, LRG, records the fact that
the meeting took place, no other details are given.
convened by Secretary Stimson at the
War Department. Present also were
Bush, Conant, Bundy and Generals
Marshall, Somervell, and Styer. The
group agreed to establish a small
Military Policy Committee, responsi-
ble to the Top Policy Group, to for-
mulate project policies on research
and development, construction and
production, and strategic and tactical
matters. Bush was chosen chairman,
with Conant as his alternate; the
other members were General Styer
and Rear Adm. William R. Purnell,
who had replaced Rear Adm. Willis
A. Lee, Jr., on the JNW Committee.
General Groves was to sit with the
committee and to act as its executive
officer in carrying out its policies.
The new committee was directed to
report periodically to the Top Policy
Group. The OSRD S-1 Executive
Committee was to continue to advise
on scientific aspects of the program,
with most of the research activities
under OSRD direction. ^^
As soon as the Military Policy Com-
mittee had received written approval
from the Top Policy Group and the
JNW Committee, it assumed virtually
complete control of all aspects of the
atomic energy program, acting
through General Groves as, to use
Stimson's phrase, "the executive head
of the development of the
enterprise." ^^
''Rpt, Bundv, sub: S-1 Mtg at Secv War's Ofiice,
23 Sep 42; Memo A, signed bv all lOp Policy Group
(except President) and JNW members, 23 Sep 42,
Ltr, Bush to Patterson, 13 Oct 45. All in HB Files,
Fldr 6, MDR. DSM Chronologv, 26 Sep 42, Sec.
2(e), OROO. Smvth Report, pp. 59-60.
'2 Stimson Diarv, 23 Sep 42, HI.S.
78
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
First Measures
Acquiring the Tennesssee Site
Making a hurried departure from
the 23 September meeting at the War
Department, Groves went directly to
Union Station and caught an over-
night train for Knoxville, Tennes-
see.^^ {See Map 1.) The next morning
he met Colonel Marshall, who had
been rechecking the proposed site for
the project. Groves and Marshall
spent the day going over the site as
carefully and thoroughly as was prac-
ticable on existing roads. "It was evi-
dent that it was an even better choice
than . . . [he] had anticipated." ^^
Well satisfied that the site would meet
all requirements, and knowing that
preliminary steps for acquisition were
under way. Groves telephoned Col.
John J. O'Brien of the Engineers'
Real Estate Branch to proceed at
once with formal acquisition.
The roughly rectangular site, about
16 miles long and 7 miles wide, cov-
ered substantial portions of both
Roane and Anderson Counties. It was
located approximately midway be-
tween the two county seats, Kingston
and Clinton, and about 12 miles west
of Knoxville, the nearest citv. Bound-
•^ Subsection based on Marshall Diarv, 29-31 Jul
and 19, 23, 24, 26 Sep 42, MDR; Ur, Robins (Act
Chief of Engrs) to CG SOS, sub: Acquisition in Fee
of Approx 56,200 Acres of Land for Demolition
Range Near Kingston, Tenn., and Inds, 29 Sep 42,
Incl to Memo, O'Brien to Lt Col Whitney Ashbridge
(CE Mil Constr Br), sub: Land Acquisition in Con-
nection With MD, 17 Apr 43, Admin Files, Gen
Corresp, 601 (Santa Fe), MDR; Groves, Sow It Can
Be Told, pp. 24-26; MDH, Bk. 1, Vol. 10, "Land Ac-
quisition CEW, " p. 2.21 and App. Fl, and Vol. 12,
"Clinton Engineer Works," pp. 2.6-2.8, DASA;
George O. Robinson, Jr., The Oak Ridge Story (Kings-
port, Tenn.: Southern Publishers, 1950), p. 27.
'*Groves, \ow It Can Be Told, p. 25.
ed on three sides by the meandering
Clinch River and on the northwest by
Black Oak Ridge, the terrain of the
site was typical of the region.
Wooded ridges, running more or less
parallel to its long axis, rose generally
about 200 feet above narrow valleys.
Of the approximately one thousand
families, most resided on farms or in
one of several small hamlets.
On 29 September, Under Secretary
of War Patterson authorized the Engi-
neers to acquire the some 56,000
acres at an estimated cost of $3.5 mil-
lion. Subsequent additions brought
the total to about 59,000 acres. On
7 October, a court-approved condem-
nation for the whole area went into
effect, and within a month the first
residents began to leave. Construc-
tion began almost immediately. Ulti-
mate acquisition of the entire site
would not be completed without
many problems, but now, at least, the
first essential step toward building the
great plants for producing fissionable
materials had been taken. ^^
For security reasons earliest public
references to the site indicated it was
an artillery and bombing practice
area, and for several weeks it was
known as the Kingston Demolition
Range. The official designation, how-
ever, and the name that was released
to the public in late January 1943,
was the Clinton Engineer Works.
Project leaders chose the name of the
town located a few miles northeast of
the site as being least likely to draw
attention to the atomic energy activi-
ties at the site. The Clinton Engineer
Works continued to be the Tennessee
Land acquisition problems are dealt with in Ch.
GENERAL GROVES TAKES COMMAND
79
area's official designation as long as it
remained under Army control. In
mid- 1943, when permanent housing
for the site's growing population was
erected along Black Oak Ridge, the
townsite became known as Oak
Ridge, and this name was used as the
post office address. ^^
Procuring Uranium
Whether the Manhattan Project had
sufficient uranium ore to fulfill its
mission. Groves felt, was of para-
mount importance. ^^ Immediately
after his 17 September departure
from the Corps and before he official-
ly assumed his new position as Man-
hattan commander, he took steps to
ascertain the availability of uranium
to the project. Informed by Colonel
Nichols of the contracts already made
^^ KnoxvUle Joimial. 31 Jan 43; Groves, \ou> It Can
Be Told, pp. 25-26. Groves notes that not until es-
tablishment of the AEG in 1947 did the name Oak
Ridge become the official designation of the Tennes-
see project.
'''Subsection based on Memo for File, Merritt,
sub: Foreign Sources of Material Which Should Be
Further Investigated, 23 Feb 43; Memo, Merritt to
Nichols, sub: Resume of Production of Uranium
Products for MD in Golorado Plateau Area, 26 Jan
45. Both in Admin Files, Gen Gorresp, 410.2 (I'ra-
nium), MDR. Rpt, Military Policy Committee to Top
Policy Group, sub: Present Status and Future Prgm
(hereafter cited as MPC Rpt), 15 Dec 42, Incl to Ftr,
Bush (for MPC) to President, 16 Dec 42, OCG Files,
Gen Gorresp, MP Files, Fldr 25, Fab B (original of
covering letter, with Roosevelt's approval, filed
herein), MDR. Marshall Diary, 14 Sep-15 Oct 42,
MDR. Ltr, Bush to Styer, 11 Sep 42, OSRD. Memo,
[RuhofT] to Groves, sub: Summary of Ore Contracts,
15 Feb 44, Admin Files, Gen Corresp. 161 (African
Metals), MDR. Contract W'-7405-eng-4 (signed by
Nichols and Sengier), 19 Oct 42, OROO. Kenneth
D. Nichols, Comments on Draft Hist "Manhattan:
The Army and the Atomic Bomb," Incl to Ltr, Nich-
ols to Chief of Mil Hist, 25 Mar 74, CMH. MDH,
Bk. 7, Vol. 1. "Feed Materials and Special Procure-
ment," passim, DASA. Smyth Report, p. 66. Comp-
ton. Atomic Qiiest. pp. 96-97. Groves, Sow It Can Be
Told. pp. 33-37.
with Edgar Sengier of Union Miniere
and of the Bohemian Grove decision
to acquire the company's reserve of
ore on Staten Island, Groves directed
Nichols to press the negotiations with
the mining executive.
During the previous week Colonel
Nichols, Capt. John R. Ruhoff, assist-
ant chief of the District's Materials
Section, and officials of the Standard
Oil Development Company and the
Stone and Webster Engineering Cor-
poration had agreed that Ruhoff
should arrange for a test of the Staten
Island ore to determine the percent-
age of recoverable UaOs (uranium
oxide) and, on the fifteenth, Ruhoff
had secured Sengier's release of 100
tons for shipment to Eldorado Gold
Mines' Port Hope refinery. In the
meantime, Nichols had obtained the
necessary export licenses through the
State Department.
In follow-up negotiations with Sen-
gier on 18, 23 and 25 September,
Nichols arranged for procurement of
the Staten Island ore. The time re-
quired to work out the necessary
arrangements with both Eldorado
Gold Mines and its marketing agent,
the Canadian Radium and Uranium
Corporation, delayed signing of the
contract until 19 October. It called
for purchase by the United States of
the uranium content of 100 tons of
ore, with Union Miniere's African
Metals retaining ownership of the
radium in the ore. Also, the United
States was to have an option to pur-
chase the remaining 1,100 tons of
uranium ore on Staten Island, assayed
at 65 percent uranium oxide, as well
as about twice that amount of ap-
proximately 20 percent ore in storage
in the Belgian Congo. Except for that
80
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
ore shipped immediately to Port
Hope for processing (the first 100
tons reached there in November), all
Staten Island ore was to be trans-
ferred to Seneca Ordnance Depot at
Romulus, New York, for safekeeping.
Subsequent contracts covered pur-
chase of additional Congo uranium
on terms similar to those set forth in
the 19 October agreement.
Working in close consultation with
Maj. Gen. Charles P. Gross, the
Army's Transportation chief, Manhat-
tan officials arranged for shipping the
ore from Africa by the safest and
swiftest means available. Based upon
Sengier's recommendations, fast
motor ships traveling out of convoy
were employed to traverse the subma-
rine-infested South Atlantic. Because
the ore arrived at the port of New
York considerably faster than it could
be refined, it was assayed and stored
in a warehouse at Middlesex, New
Jersey, especially leased by the Army
for that purpose.^®
In a move to further expedite the
uranium progam and, at the same
time, to relieve overburdened Stone
and Webster of part of its extensive
assignment, the Manhattan District as-
sumed responsibility for procurement
and preliminary refining of the ore.
Capt. Phillip L. Merritt, a trained ge-
ologist who was already on the staff,
was assigned to monitor these activi-
ties. Working under the general guid-
ance of Colonel Nichols, Merritt gave
special attention to the project's
worldwide search for possible addi-
tional sources of uranium.
Toward the end of 1942, the Eldo-
rado mine in Canada resumed oper-
ations. Meanwhile, the District made
arrangements for uranium extraction
from tailings of Colorado Plateau car-
notite ores mined originally for their
radium and vanadium content. In Jan-
uary 1943, the War Production Board
(WBP) issued orders (subsequently
amended in August) that future sale
or purchase of uranium compounds
was limited to the atomic program,
except for essential military and in-
dustrial applications. Even before the
board acted, Manhattan's Military
Policy Committee had reported opti-
mistically to the President that the
project had "either in hand or on the
way, sufficient uranium for the entire
program up to and including military
use. ^^
Obtaining Prionty Ratings
In June 1942, President Roosevelt
had endorsed a recommendation by
the Top Policy Group that the atomic
energy program should be assigned
the highest priorities to facilitate pro-
curement of the tools and materials
required to produce an atomic
bomb. 2° Yet, by September, as
^* During the war only two shipments of ore, to-
tahng 200 tons, failed to reach the United States-
one aboard a vessel torpedoed in late 1942 and the
other on a ship that sank as a result of a marine ac-
cident in earlv 1943. See MDH, Bk. 7, Vol. 1, p. 2.5,
D.AS.A.
19 MFC Rpt, 15 Dec 42, MDR.
20 Except where indicated, discussion of priorities
based on MDH, Bk. 1, Vol. 9, "Priorities Program,"
D.\SA, with many of the basic documents relating to
the priorities problem reproduced in •A.pp. A. Ibid.,
p. 2.5 and App. Bl, DASA; Ltr, Weaver (Resources
Div Dir, SOS) to Groves, sub: Special Priorities Au-
thoritv for Dist Engr, 26 Sep 42, copy in ibid., App.
A5, DAS.^; Memo, Marshall to All Area Engrs, sub:
Requests for Out-of-line Ratings, 16 Oct 42, copy in
ibid., App. A 12, DASA: Marshall Diarv, 17, 19, 26
Sep and 1 Oct 42, MDR; Memo, Johnson to Groves,
sub: Current Events, 30 Sep 42, Admin Files, Gen
Coniinued
GENERAL GROVES TAKES COMMAND
81
Groves assumed overall administra-
tive leadership of the project, it was
evident that the AA-3 base rating
Colonel Marshall had secured in July
was not going to be adequate to
ensure the uninterrupted develop-
ment of the atomic program. Conse-
quently, following consultation with
General Styer, Groves moved imme-
diately to obtain for the project the
priority rating he believed was essen-
tial for its successful continuation.
Both generals had decided to seek
broad authority for the District to
issue an AAA priority whenever there
was a need to break a bottleneck.
When Groves called on WPB Chair-
man Donald Nelson on 19 Septem-
ber, he had with him the draft of a
brief letter — addressed to himself and
to be signed by Nelson — in which he
had incorporated the idea of assign-
ing the desired AAA authority to the
project. As Groves later recalled. Nel-
son's first reaction was negative; how-
ever, when the general threatened to
take the matter to the President, the
chairman changed his mind. Whether
or not other pressure already had
been brought to bear on Nelson is
not known, but he did agree to sign
the letter as Groves had written it.
I am in full accord [it read] with the
prompt delegation of power by the Army
Corresp, 319 1. MDR; DSM Chronology. 26 Sep 42,
Sec. 2(e), OROO; Groves, Xoiv It Can Be Told. pp.
22-23; MPC Rpt, 15 Dec 42, MDR; Groves. S-1 Ex
Committee Mtg (hereafter cited as MPC Min — actual
summaries of actions required and decisions
reached at MPC meetings), 5 Feb 43, OCG Files,
Gen Corresp, MP Files, Fldr 23, Tab A, MDR;
Memo, Weaver to C^hief of Engrs, sub: Priority
Rating for MD, 22 Mar 43, Admin Files, Gen Cor-
resp, 322.011 (LC), MDR; Memo, Denton, ASF, to
Chief of Engrs, Attn: Groves, sub: MD, 1 Jul 44,
.■\dmin Files, Gen C-orresp, 400.1301 (Priority),
MDR.
and Navy Munitions Board [ANMB]
through you to the District Engineer,
Manhattan District, to assign an AAA
rating, or whatever lesser rating will be
sufficient, to those items the delivery of
which, in his opinion, cannot otherwise
be secured in time for the successful
prosecution of the work under his
charge.^ ^
On 26 September, the ANMB
issued the District a blank check to
assign the AAA priority. But General
Weaver, senior Army representative
on the ANMB, warned Groves that
use of this AAA authority must not
interfere unnecessarily with other
high-priority programs and that, with
each use of the rating, a written
report must be submitted within a 24-
hour period. That same day, at his
first meeting with the S-1 Executive
Committee, Groves explained to the
group that the AAA priority would
not be used for the entire project, but
only when progress would be unduly
delayed by employment of any lower
rating. And to ensure retention of
AAA authority, an AA-3 or lesser pri-
ority would be utilized whenever pos-
sible. Before adjourning, the confer-
ees agreed that the OSRD would con-
tinue to deal with its own priority
problems as far as possible, with the
Army lending assistance when neces-
sary, and that the Washington Liaison
Office of the Manhattan District
would handle the general administra-
tion and coordination of priorities for
all future procurement for the atomic
project.
Now that the District had AAA au-
thority as a backup to overcome pro-
curement obstacles, both Groves and
2'Etr, Nelson to Groves, 19 Sep 42, OCG Files,
Gen Corresp, MP Files, Fldr 25, Tab B, MDR.
82
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Styer believed that development of
the atomic program could continue
with the AA-3 base rating. By 1943,
however, the project's unfolding re-
quirements revealed that for even
routine procurement the AA-3 rating
was inadequate and the AAA rating
unnecessarily high. To remedy this
situation, Groves wrote to General
Weaver in early February and re-
quested that the District's priority
"authority given in [the] letter of Sep-
tember 26, 1942 be amplified to in-
clude use of AA-1 and AA-2 rat-
ings." ^^ Although the Nelson letter
had referred to the use of lesser rat-
ings than AAA whenever these would
suffice, the fact that the Joint Chiefs
of Staff had forbidden use of AA-1 or
AA-2 for construction projects had
ruled out their earlier use by the Dis-
trict. Weaver officially responded on
22 March, upgrading the rating of
AA-3 to AA-2X — a new priority cre-
ated to provide supplies and services
for urgent foreign and domestic in-
dustrial programs.
Groves, however, still was not satis-
fied and, in the months that followed,
continued to press ANMB officials to
assign the maximum AA-1 base
rating. Time passed, but the general
persisted in order to achieve his ob-
jective. Finally, on 1 July 1944, the
District received AA-1 authority.
Following District policy, the Wash-
ington Liaison Office was to use the
lowest rating that would bring about
the required delivery of materials. But
to counter the threat from other
urgent wartime programs during the
District's massive procurement and
"Ltr, Groves to Weaver, sub: Out-of-line Ratings,
7 Feb 43, copy in MDH, Bk. 1, Vol. 9, App. 7,
DASA.
construction phase between 1943 and
early 1945, the officer assigned emer-
gency priorities at the AAA level for
more than $77 million worth of
orders. At times, the Manhattan
Project was using more AAA ratings
than the combined total for all other
Army and non-Army programs. Yet,
through the exercise of discretion,
Groves and his staff were able to
avoid not only strong criticism of
their actions but also attempts to
revoke the District's AAA authority.
Groves's success in obtaining the suc-
cessive advances in the priority status
of the Manhattan Project ensured
that, despite occasional problems and
annoyances, procurement needs for
the atomic program were met.
Establishment of Los Alamos
In the late summer of 1942,
J. Robert Oppenheimer, the Univer-
sity of California physicist who was di-
recting the theoretical aspects of de-
signing and building an atomic bomb,
became convinced a change was
needed. Studies under his direction
had been going on in various institu-
tions that were equipped for fast-neu-
tron studies. Now Oppenheimer and
his associates felt that further
progress could be best achieved by
concentrating everything in one cen-
tral laboratory devoted exclusively to
this work. Taking this step would not
only eliminate waste and duplication,
but it would also permit a freer ex-
change of ideas and provide for the
centralized direction of all work, in-
cluding studies of chemical, engineer-
ing, metallurgical, and ordnance
GENERAL GROVES TAKES COMMAND
83
problems that so far had received
little or no attention. ^^
Groves first met Oppenheimer in
early October while on his initial trip
to familiarize himself with the atomic
programs at the Universities of Chi-
cago and California (Berkeley). The
general heard a report from Oppen-
heimer on the eighth and the two
men hit it off at once. Groves was in-
terested in Oppenheimer's proposed
central laboratory and, a week later
when the two met again with Marshall
and Nichols on a Chicago-New York
train, Groves asked Oppenheimer to
come to Washington, D.C., to explore
the idea. There, they talked with
Arthur Compton and Vannevar Bush,
and on 19 October Groves approved
the decision to establish a separate
bomb laboratory. Pleased with what
had been accomplished and confident
that Groves's support in this step
would "bear good fruit in the future,"
Oppenheimer left immediately for
Boston to brief Conant at Harvard,
where the latter held the post of uni-
versity president.^*
Oppenheimer and Compton had
spoken of placing the laboratory at
the Tennessee site, or possibly in
Chicago, but neither they nor General
Groves were satisfied with these
choices. For this most secret part of
the secret Manhattan Project isolation
and inaccessibility were most essen-
tial, and neither the Clinton Engineer
^'Testimony of Oppenheimer in Oppenheimer Hear-
ing, pp. 12 and 28; Smyth Report, p. 74.
^"Quotation from Ltr, Oppenheimer to Groves,
19 Oct 42, Admin Files, Gen Corresp, 322 (Los
Alamos), MDR. See also Testimony of Oppen-
heimer in Oppenheimer Hearing, p. 28; Nichols, Gom-
ments on Draft Hist "Manhattan," Incl to Ltr, Nich-
ols to Chief of Mil Hist, 25 Mar 74, CMH; Marshall
Diary, 15-16 Oct 42, MDR; Groves Diary, Oct 42,
LRG; Groves, \ow It Can Be Told, p. 61.
Works nor Chicago offered these. In
addition to the obvious requirements
of a climate that would permit year-
round construction, safety from
enemy attack, ready transportation,
and access to power, fuel and water,
there were several other important
considerations. The site would have
to provide an adequate testing
ground; it should be in a sparsely
populated area, for reasons of safety
as well as security; the land should be
relatively easy to acquire; and it
should already have sufficient build-
ings to house most of what was antici-
pated would be a comparatively small
staff. 2 5
Groves briefly considered two other
sites. One near Los Angeles, he re-
jected on security grounds; the other,
near the California-Nevada border, on
the east side of the Sierra Nevada in
the vicinity of Reno, he found unsatis-
factory because it was too inaccessible
and heavy snows would interfere with
winter operations. He agreed with
Oppenheimer that the region around
Albuquerque, New Mexico, seemed to
offer the most attractive possibilities.
Oppenheimer owned a ranch in this
vicinity, and his general knowledge of
the countryside contributed consider-
ably to making an accurate appraisal
of the area. Air and rail service to Al-
buquerque were excellent; the climate
was moderate throughout the year;
2^ Paragraphs on selection of bomb laboratory
site based on Groves, Sow It Can be Told, pp. 63-67;
MDH. Bk. 8, Vol. 1, "General," Sec. 2, DASA; Rpt,
U.S. Engrs Office, Albuquerque Dist. sub: Proposed
Site for Mil Proj at Los Alamos Ranch School,
Otowi, N.Mex., 23 Nov 42, Admin Files, Gen Cor-
resp, 600.03, MDR; Groves Diary, Nov 42, LRG;
Testimony of Oppenheimer in Oppenheimer Hearing.
pp. 12 and 28; Inlerv, Author with Edwin M. McMil-
lan (Rad Lab, Univ of Calif at Berkelev), 8 Jul 64.
CMH.
84
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
and the area was not only isolated but
also sufficiently far inland from the
West Coast to be beyond any serious
danger from the by now remote pos-
sibility of Japanese interference.
At the end of October, Maj. John
H. Dudley, one of Colonel Marshall's
assistants who was familiar with the
general area, made some preliminary
surveys. He recommended a site at
Jemez Springs, about 50 miles north
of Albuquerque. {See Map 2.) Engi-
neers from the Albuquerque District
surveyed the site and, on 16 Novem-
ber, Groves met Oppenheimer and
several others for a personal inspec-
tion of the area. They soon conclud-
ed, however, that the Jemez Springs
site would not do; the land would be
difficult to acquire and the nature of
the terrain would prevent later expan-
sion of the installation.^®
Stiil hoping to find a suitable loca-
tion in this general area, Groves and
the others drove east and slightly
north toward the tiny settlement of
Los Alamos. This community, atop a
high, level tableland, actually consist-
ed of little more than the Los Alamos
Ranch School for Boys. Otherwise the
area was virtually uninhabited, with
the nearest town located some 16
miles away. The school buildings and
the complete isolation of the site were
^** Account of inspection of sites in Los Alamos
area based primarily on Groves, S'ow It Can Be Told,
pp. 65-67, and Testimony of Oppenheimer in Op-
penheimer Heanng, p. 28. Another member of the in-
spection party was Edwin M. McMillan, a physicist
on the faculty at the University of California, Berke-
ley, and a long-time associate of Oppenheimer. As
McMillan recalled, he, Oppenheimer, and Dudley
had gone on horseback to the Jemez Springs area
earlier in the day and then had been joined by
Groves in the afternoon. McMillan had been a guest
at Oppenheimer's ranch on «.;;rlier occasions and
was therefore generally familiar with the Los
Alamos area. See McMillan Interv, 8 Jul 64, CMH.
arguments in its favor. There ap-
peared to be sufficient water, if the
supply were carefully used, and all
other characteristics seemed satisfac-
tory. The only question was how will-
ing the owners of the school would
be to give it up to the Army. If they
seriously opposed government acqui-
sition, the resultant publicity would
run counter to the secrecy desired by
the project leaders.
While Groves and Oppenheimer
headed back to Washington, D.C.,
Dudley and engineers of the Albu-
querque District began a formal
survey of a proposed site at Los
Alamos. The desired area consisted of
about 54,000 acres in Sandoval
County, somewhat more than 20
miles airline distance northwest of
Santa Fe, of which all but about 8,000
acres was in national forest land al-
ready owned by the United States
government. Grazing lands and the
Los Alamos Ranch School comprised
the rest of the area. Because the
school was having some difficulty get-
ting instructors during the war and
was in serious financial trouble, the
owners were willing to sell. As for the
grazing lands, there appeared to be
no problem in acquiring them.
Even before the reports of this
survey came in. General Groves had
called a meeting in Washington to
confer about the site with Oppen-
heimer, as well as with two of his sci-
entific colleagues from California,
Ernest Lawrence and Edwin McMil-
lan, and with Arthur Compton. Then,
on 23 November, with the reports in
hand, Oppenheimer, Lawrence, and
McMillan again inspected the area
with Major Dudley and made recom-
mendations on possible locations for
GENERAL GROVES TAKES COMMAND
85
#. ^
-A
Approach Road to the Los Alamos Ranch School for Boys
laboratories and housing. "Lawrence
was pleased by the site," Oppen-
heimer reported to Groves, "and so,
again, were we." ^"^
And so, again, was Groves. Two
days later he approved the Los
Alamos site and began steps to ac-
quire the land. Right of entry to the
heart of the site had already been ob-
tained from the school director and,
although the actual legal acquisition
would take several months, Groves
was able to authorize the Albuquer-
que District to proceed with construc-
tion on 30 November. The whole
business was carried out, to use Op-
penheimer's words, "with unbeliev-
able dispatch." ^®
^^ Llr, Oppenheimcr to Groves, 23 Nov 42,
Admin Files, Cien Corresp, 600.1 (Santa Fe), MDR.
^* Memos, Groves to Albuquerque Dist Engr, sub:
Proj Gonstr at Los Alamos, N.Mex., 30 Nov 42, and
Groves to SWD Div Engr, sub: Gonstr in Vic of Al-
buquerque, N.Mex., 30 Nov 42, Admin Files, Gen
As with the Clinton Engineer
Works, the Los Alamos site in the be-
ginning also was referred to, for secu-
rity reasons, as a demolition range — a
somewhat ironic reference for a labo-
ratory where an atomic bomb would
be built. The site also had several
names, the most common being Site
Y, Project Y, Zia Project, Santa Fe, or
simply, Los Alamos, its official title
and the name by which it would be
most widely known in the future. ^^
Corresp, 600.1 (Santa Fe), MDR; Ltr, Robins (Act
Chief of Engrs) to CG SOS, sub: Acquisition of
Land for Demolition Range at Los Alamos, N.Mex.,
25 Nov 42, Incl to Memo, O'Brien to Ashbridge,
sub: Land Acquisition in Connection with MD, 17
Apr 43. MDR: MDH, Bk. 8, Vol. 1, Sees. 2-3,
passim, DASA. Quoted words from Testimony of
Oppenheimer in Oppenhemer Hearing, p. 28. For de-
tailed account of land acquisition at Los Alamos see
Ch. XV.
2^ Memo, Groves to CG SOS, sub: Activation and
Administration of Los Alamos, 27 Feb 43, Admin
Files, Gen Corresp, 319.2 (Los Alamos), MDR.
86
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Once the choice of Los Alamos had
been made, events moved swiftly.
"The last months of 1942 and early
1943," recalled Oppenheimer later,
"had hardly hours enough to get Los
Alamos established." ^° Vigorously
supported by Groves, Compton,
Conant, and others, Oppenheimer
launched an extensive recruitment
program. He traveled all over the
country, urging scientists of recog-
nized ability to join the new laborato-
ry. Restricted to revealing only what
was absolutely necessary about the
project, Oppenheimer faced no easy
task trying to arouse the interest of
scientists, technicians, and mechanics
in the program, in indicating its sense
of urgency, and in persuading them
to sign up for work at a military post
in the middle of the New Mexico
desert, where they and their families
might have to remain isolated for the
duration of the war. Nevertheless, he
was highly successful in these efforts.
Recruits from Princeton, Chicago,
California, Minnesota, Wisconsin, and
other universities joined the program,
the first contingent arriving at Los
Alamos with Oppenheimer in March
1943, long before construction at the
site was completed.
With the university scientists came
their equipment: a cyclotron from
Harvard, two more particle accelera-
tors from Wisconsin, another from Il-
linois. Locating and securing this es-
sential equipment was difficult
enough; shipping it to New Mexico
was an additional problem. "Every-
body," Oppenheimer later recalled,
"arrived with truckloads of junk and
equipment." Under a contract with
the University of Cahfornia, erection
of the first cyclotron began at Los
Alamos in mid-April, and the first ex-
periment was performed early in July.
Already, Oppenheimer continued,
"we were finding out things that
nobody knew before." ^^
Los Alamos was officially activated
as a military establishment on 1 April
1943, with Oppenheimer as its scien-
tific chief and Col. John M. Harman
as its military head. It was unique
among Manhattan Project installa-
tions in that it was established as a
separate organization, directly re-
sponsible to General Groves. It came
under the district engineer only for
routine administrative matters. As its
civilian director, Oppenheimer had
broad authority and administrative re-
sponsibility. In charge of all scientific
work as well as "the maintenance of
secrecy by the civilian personnel
under his control," ^^ he was respon-
sible only to Groves and Conant. This
arrangement relieved Compton and
the Metallurgical Laboratory of the
responsibility for bomb design and
construction and left them free to
concentrate on plutonium production.
The relations between Oppenheimer
and Colonel Harman were based on
close cooperation, rather than con-
trol. Harman, who also reported to
Groves, had little or nothing to do
with scientific matters. His primary
responsibility was to oversee Los
^° Testimony of Oppenheimer in Oppenheimer
Hearing, p. 12. This and following paragraph based
on ibid., pp. 12-13 and 28-29; Smyth Report, p. 151;
Compton, Atomic Quest, p. 130.
*' Quoted words from Testimony of Oppenheimer
in Oppenheimer Hearing, p. 29. See also Memo, Op-
penheimer to Groves, 7 Nov 42, and Styer corre-
spondence with Univs of 111 and Wis, Admin Files,
Gen Corresp, 400.12 (Equipment), MDR.
*^Ltr, Conant and Groves to Oppenheimer, 25
Feb 43, Admin Files, Gen Corresp, 600.12 (Los
Alamos), MDR.
GENERAL GROVES TAKES COMMAND
87
Alamos as a military reservation, in-
cluding those housekeeping and
guard functions necessary to support
Oppenheimer's program. ^^
The other major element in the ad-
ministration of Los Alamos was the
prime contractor, the University of
California. Under a War Department
contract, its role was largely to
provide business management and
technical procurement. For reasons of
security, the university had no repre-
sentative at Los Alamos with authority
comparable to that of Oppenhcmier
or Colonel Harman.
Project leaders wanted to make the
work and the living conditions at Los
Alamos as attractive as possible; how-
ever, for reasons of security and
safety. General Groves wished to
maintain as much control as he could
over the scientists. One idea he fa-
vored was to put key civilians in uni-
form as army officers. This plan
seemed attractive to Oppenheimer
but aroused strong opposition from
many of the other scientists. The Mili-
tary Policy Committee finally agreed
to drop the idea for the period of ini-
tial experimental studies, but insisted
that the scientific and engineering
staff be composed entirely of commis-
sioned officers when final experi-
ments and the construction of the
bomb began. Yet, when this time ar-
" Except where noted, this and following para-
graphs based on ibid.; Memo, Groves to CG SOS,
sub: Activation and Administration of Los Alamos,
25 Feb 43, MDR; Testimony of Oppenheimer and
Groves in Oppenheimer Hearing, pp. 28 and 171-72;
Compton, Atomic Qitest. pp. 129-30; Memo, Marshall
to Groves, sub: Major MD Contracts, 27 Apr 43,
Admin Files, Gen Corresp, 161, MDR (also see
WD-Univ of Calif Contract W-7405-eng-36,
20 Apr 43, LASL); MDH. Bk, 8, Vol. 2, "Techni-
cal," pp. 1. 5-1.6, III.6, App. 7, DASA; MPC Min, 5
Feb 43, MDR. See Ch. XXIII for further discussion
of the administrative organization at Los Alamos.
rived. Project Y had grown so large
that the plan was dropped as being
impractical and unnecessary.
The most important personnel
problem at Los Alamos was choice of
a scientific director, and Oppen-
heimer's appointment was no simple
matter. While he had been the leader
of the group studying the theoretical
aspects of constructing atomic bombs,
the Los Alamos program was to be a
practical operation, and carrying it
out would require considerable ad-
ministrative and organizational abili-
ties. The chiefs of the three other
major Manhattan laboratories —
Compton, Lawrence, and Urey — were
all Nobel Prize winners. Oppenheimer
was not, and there was some feeling
among the scientists that this might
disqualify him as head of the Los
Alamos Laboratory. General Groves,
while impressed with Oppenheimer's
great intellectual capacity, also was
not entirely certain. Bush and Conant
shared his hesitation; Lawrence,
Compton, and Urey all indicated
some reservations.
Nevertheless, a tentative decision in
favor of Oppenheimer appears to
have been made quite early, because
neither Lawrence nor Compton — the
only other candidates — could be
spared from his own vital project. Op-
penheimer's appointment as "Scien-
tific Director of the special laboratory
in New Mexico" was formalized on 25
February in a letter to him from
Groves and Conant; ^'' it did not.
^'' Quotation from Ltr, Conant and Groves to Op-
penheimer, 25 Feb 43, MDR. See also Groves, Sow
It Can Be Told. pp. 60-64; Compton, Atomic Qitest. p.
129; Testimony of Bush in Oppenheimer Hearing, pp.
560-61; Ltr, Conant to Groves, 21 Dec 42, Admin
Files, Gen Corresp, 334 (Postwar Policy Committee-
Coniinued
88
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
however, become final until mid-July
because of security clearance prob-
lems. As was well-known to most of
the project leaders, Oppenheimer had
an extended history of supporting
Communist-front organizations and
causes and of association with Com-
munists and fellow-travelers. Only
through direct action by Groves was
Oppenheimer, who was already at
work in Los Alamos, finally cleared. ^^
Manhattan Project Organization
and Operation
With the establishment of Los
Alamos on 1 April 1943, the basic
structure of the Army's organization
for administering the atomic bomb
program was essentially completed. In
the months that followed, detailed
and sometimes substantial changes
were made in that organization.^® For
example, in mid-August, the Manhat-
tan District moved from its temporary
location in New York to permanent
quarters at Oak Ridge, and Colonel
Chicago), MDR; Leslie R. Groves, Comments on
Draft Ms "Now It Can Be Told: The Story of the
Manhattan Project," LRG; Interv, British writer
Hailey with Groves, 13 Dec 57, LRG.
*^See Ch. XI for full story of the security investi-
gation and clearance of Oppenheimer.
^^ Subsection based on Org Charts, U.S. Engrs
Office, MD, 27 Jan, 1 and 30 Apr 43, OROO; Org
Charts, U.S. Engrs Office, MD, 15 Aug and 1 Nov
43, 15 Feb, 1 Jun, 28 Aug, and 10 Nov 44, and
26 Jan 45, Admin Files, Gen Corresp, 020 (MED-
Org), MDR; Gen Corresp, Dist Engr to MD Subor-
dinates. Sep 42-late 43, OROO [e.g., see Memo, Lt
Col Thomas T. Crenshaw (Mat Sec chief) to Dist
Engr, sub: Org Chart, 13 Nov 42, and Memo, Lt
Col Robert C. Blair (Ex Off, Engr and Opns, MD)
to Dist Engr, sub: Proposed Org for Maint and Opn
of Gen Facilities, 22 Jan 43]; Interv, Fine and Rem-
ington (Hist Div, OCE) with Marshall, 19 Apr 68,
CMH; Interv, Stanley L. Falk and Author with
Charles Vanden Bulck and Capt W. R. McCaulev,
22 Jun 60, CMH; MDH, Bk. 1, Vol. 1. "General,"
pp. 3.13-3.21, DASA; Groves, \ow It Can Be Told.
pp. 2 and 27-32.
Nichols, the deputy district engineer,
replaced Colonel Marshall as district
engineer when the Corps of Engi-
neers reassigned Marshall to a post
where he might receive his long over-
due promotion to the rank of briga-
dier general.^' But these subsequent
changes in key personnel and in the
location of certain elements would
not significantly affect the basic struc-
ture of the Manhattan Project, the term
that by mid- 1943 most accurately de-
scribed the Army's overall administra-
tive organization for the atomic bomb
program.
The administrative elements that
comprised the Manhattan Project
'' Marshall's new assignment was as commanding
officer. Engineer Replacement and Training Center,
Camp Sutton, N.C., with the rank of brigadier gen-
eral. He remained in this assignment only until No-
vember 1943, when he went overseas to the South-
west Pacific Area to serve in a variety of positions in
Australia, New Guinea, and the Philippines (Decem-
ber 1943 to February 1945). Marshall had first sug-
gested to Groves that he be relieved as district engi-
neer of the Manhattan District at the end of 1942,
after realizing that Groves was not going to function
simply as a liaison officer in Washington, DC, but
intended to take a very direct and active role in the
detailed administration of the District. Marshall later
recalled he thought having two senior and experi-
enced engineer officers exercising the command
function was unnecessary duplication. Furthermore,
Marshall, who was senior to Groves in permanent
Regular Army rank, realized his own chances of pro-
motion to general officer rank were remote as long
as he remained in a subordinate position under
Groves. Groves, however, responded negatively to
Marshall's request, stating he felt that he must have
an officer of Marshall's experience and capabilities
in the key district engineer position. Thus, Marshall
resigned himself to serve as district engineer for the
duration of the project; however, in August 1943,
Groves unexpectedly informed him that his request
for relief had been approved. For further details on
Marshall's relief and reassignment see Marshall
Interv, 19 Apr 68, CMH; Marshall Diary, 19 Sep 42,
MDR; and Groves, Sow It Can Be Told. p. 29. In his
account of Marshall's reassignment. Groves errs in
stating that Marshall was relieved for an immediate
"key assignment overseas," overlooking Marshall's
intervening assignment to command Camp Sutton.
Chart 1 — Organization of the Manhattan Project, April 1943
CHIEF OF STAFF
SECRETARY OF WAR
OFFICE OF SCIENTIFIC
RESEARCH & DEVELOPMENT
OFFICER IN CHARGE, MANHATTAN PROJECT
DISTRICT ENGINEER, MANHATTAN DISTRICT
DEPUTY DISTRICT ENGINEER
EXECUTIVE ASSISTANT
CONTRACTORS
TECHNICAL STAFF
m:^
NIVERSITY OF CHICAGO
COLUMBIA UNIVERSITY
UNIVERSITY OF CALIFORNIA
PROJECT DIRECTOR
'■9 UINT CHIEF
MORGANTOWN
COLUMBIA (LIAISON)
SPECIAL MATERIALS
X-10 UNIT CHIEF
HANFORD
ENGINEER WORKS
CHICAGO (LIAISON)
CLINTON
ENGINEER WORKS
X-IOSEMIWORKS
PROJECT DIRECTOR
Y-12 UNIT CHIEF
CLINTON
ENGINEER VI/ORKS, Y-12
SPECIAL ACCOUNTS _
CLINTON AREA
DEPUTY DISTRICT ENGINEER
EXECUTIVE ASSISTANT
ADMINISTRATIVE
DIVISION
CALIFORNIA (LIAISON) ^-
ALL SPECIAL
MATERIAL AREAS
K-25 UNIT CHIEF
NEW YORK AREA
MILWAUKEE AREA
COLUMBIA (LIAISON)
INTELLIGENCE
PROTECTIVE SECURITY
LABOR RELATIONS
CLASSIFIED FILES
MILITARY PERSONNEL
AUDITS ACCOUNTING
OFFICE ADMINISTRATION
PRIORITIES & MATERIALS -
WASHINGTON LIAISON —
Sources: MDH, Bk. 1, Vol. 12. App. C21. DASA; Org Charts, U.S. Engrs OfTice. MD, 27 Jan and 1 Apr 43, OROO.
GENERAL GROVES TAKES COMMAND
89
Manhattan Project Emblem
{unofficial circa 1946)
were divided into two major catego-
ries: those that functioned as integral
elements of the Manhattan District
and those that operated outside the
structure of the District, mostly in the
area of high-level policymaking or in
the executive direction of the atomic
project (Chart 1 ). The central element
in the high-level administrative hierar-
chy of the Manhattan Project was
General Groves's personal headquar-
ters. The headquarters organization
consisted of only a very small group:
Groves; Mrs. Jean O'Leary, his secre-
tary who served as his administrative
assistant in lieu of an executive offi-
cer; and several clerical employees.^®
Shortly after becoming Manhattan
commander, and knowing from expe-
rience that any effort on his part to
expedite important project activities
would require access or negotiations
with government agencies and offi-
cials. Groves decided to locate his
personal headquarters in rooms adja-
cent to those already occupied by the
Manhattan District's Washington Liai-
^* Through most of the war, the headquarters or-
ganization remained small. Then in 1945, in antici-
pation of employment of atomic bombs against
Japan, Groves enlarged it to include a public infor-
mation group.
son Office in the New War Depart-
ment Building on Virginia Avenue, a
few blocks from the White House.
Considered at first to be temporary,
time proved that location especially
well suited to the project's need, and
Groves's office remained there for the
duration of the Army's administration
of the atomic bomb program.
When Groves replaced Marshall as
the Army's project director, the Engi-
neers chief pointedly removed himself
from any further administrative re-
sponsibility for the program. Although
the Corps of Engineers continued to
assist the project, the latter functioned
as a basically independent organiza-
tion, with the Manhattan commander
having responsibility to the Army
Chief of Staff and Secretary of War
and through them to the President.
Committees continued to play an
important role in guiding, advising,
and instructing the Army administra-
tors of the project and, to some
extent, limiting their authority. Begin-
ning in late 1942, the group most in-
volved in providing guidance for the
day-to-day administration was the
MiHtary PoHcy Committee, which de-
rived its authority for policymaking
from the Top Policy Group. Although
the group never formally convened, it
continued, as during the OSRD
period, to review and ratify all major
policies and decisions relating to de-
velopment and employment of atomic
energy for military purposes in World
War II. The OSRD S-1 Executive
Committee also continued to function
as an advisory group until the transfer
of most atomic activities from the
90
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Mrs. Jean O'Leary Reviewing Project Reports With General Groves
OSRD to the Army was completed in
mid-1943.39
Responsibility for execution of the
plans, policies, and decisions made by
the various advisory groups of the
Manhattan Project devolved first
upon General Groves and through
^^ Subsequently, three other advisory groups con-
tributed significantly to administration of the
project. These were the Combined Policy Commit-
tee (CPC), formed in late 1943, which was con-
cerned with collaboration and exchanges of infor-
mation on atomic matters with the British and Cana-
dian governments; the Combined Development
Trust (CDT), established in June 1944, which was
involved in the international aspects of procure-
ment, supply, and control of uranium and thorium
ores; and the Interim Committee (IC), organized in
May 1945 by the Secretary of War with approval of
the President to advise on postwar control of atomic
energy at home and abroad, on release of informa-
tion to the public, and on employment of the bomb
against Japan. See Ch. X for a detailed discussion
on the establishment and work of the CPC, Ch. XIII
on the CDT, and Ch. XXVI on the IC.
him upon the Manhattan District.
Groves, as officer in charge of the
atomic bomb program for the Army,
exercised command authority over
the District, but he was not its chief
executive officer. That position was
held by the district engineer, who re-
ported to Groves.
The district engineer presided over
an organization that was, as it
emerged in mid- 1943, similar in many
respects to the engineer districts that
had been formed by the Corps of En-
gineers in the past to carry out special
assignments (Chart 2). Its administra-
tive elements were grouped into two
major categories: operating units,
which were involved primarily in the
day-to-day monitoring of contractor
operations; and staff units, which
were engaged in overseeing and pro-
OPERATING UNITS
Chart 2 — Organization of the Manhattan District. August 1943
district engineer
special assistant
executive officer
MEDICAL SECTION
LEGAL SECTION
MADISON SQUARE AREA
SPECIAL PRODUCTS
NEW YORK AREA
TECHNICAL DIVISION
CALIFORNIA AREA
CONSTRUCTION
DIVISION
(Y.12, K-?5, X-10)
COLORADO AREA
BEVERLY AREA
CHICAGO AREA
COLORADO AREA
LEGAL SECTION
ROCHESTER AREA
JRRAY HILL AREA
LMINGTON AREA
ST. LOUIS AREA
EM DETACHMENT
TONAWANDA AREA
WILMINGTON AREA
IOWA AREA
WILMINGTON AREA
BOSTON AREA
SPECIAL ACCOUNTS
WAC DETACHMENT
-i
Some. Org Chan. I'.S. Kngrs Olficc. MI), 1.5 Aug 43. Adniiu Files. Gen Corrcsp. 020 (MED-Org). MDR.
GENERAL GROVES TAKES COMMAND
91
viding services. In both types of units,
military personnel headed virtually all
administrative elements down to the
section level, although many of the
District employees filling positions
that required special knowledge or
training were civil service workers.
The chiefs of each of these units re-
ported directly to the district engi-
neer, who functioned with the assist-
ance of a small headquarters group
comprised of an executive officer, two
administrative assistants, and legal
and medical advisers.
Operating units, each headed by a
unit chief or an area engineer, were
formed to monitor each of the major
contractor-operated activities. The
number and precise character of these
operating units varied considerably
due to the quantity and type of con-
tract operations under District super-
vision. Thus, in the early period of
the District's operation the units con-
formed to the emphasis on construc-
tion activities, whereas later they re-
flected the shift to plant-operating ac-
tivities. By the time of the District
headquarters move in August 1943
from New York City to Oak Ridge,
five major operating units — Madison
Square Area, Hanford Engineer
Works, Clinton Engineer Works, New
York Area, and Special Products — had
been established.
The elements concerned with over-
seeing project operations and services
were divided among seven major staff
components: the Y-12 (electromag-
netic), K-25 (gaseous diffusion), X-10
(plutonium), and P-9 (heavy water)
unit chiefs; and the Technical, Service
and Control, and Administrative Divi-
sions. The four unit chiefs were re-
sponsible for the overall supervision
of the construction and operations
phases of the production processes.
The Technical Division had responsi-
bility for the major contractor-operat-
ed research and development pro-
grams at Columbia and the Universi-
ties of California (Berkeley), Chicago,
and Rochester; *° the Service and
Control Division, for control func-
tions, intelligence and security mat-
ters, labor relations, safety, and mili-
tary personnel; and the Administra-
tive Division, for procurement and
contracts, fiscal matters, civilian per-
sonnel, priorities and materials, corre-
spondence and the library, classified
files and mail and records, and the
District's Washington Liaison Office.
Additionally, the latter division pro-
vided the Los Alamos Laboratory with
specified routine services.
With the rounding out of the
Army's organization for administra-
tion of the American atomic energy
program in mid- 1943, General
Groves and his District staff were in a
much firmer position to convert the
OSRD-inherited research and devel-
opment organization into an industri-
al complex for producing fissionable
materials for atomic weapons. During
the months that followed, the Army
had to make further internal reorgani-
zations to meet the new requirements
resulting from the shift from plant
construction to plant-operating activi-
ties and the addition of new facili-
ties.'*^ But with Groves at the helm,
^^ In early 1943, Groves selected Professor Staf-
ford L. Warren of the University of Rochester to
direct a medical research program on the effects of
radiation. See Ch. XX.
''While from mid-1943 until the end of World
War II the basic pattern of the Manhattan District's
administrative organization remained relatively
fixed, the district engineer in 1944 established new
C.onlinued
92
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
carrying out the Military Policy Com- seemingly insurmountable obstacles,
mittee's decisions and overcoming the atomic project moved ahead.
operating units for specific functions — for example,
to administer divisions charged with supervising op-
eration of community and site facilities in Tennes-
see, to supervise construction and operation of the
third major production plant (thermal diffusion),
and to expedite production in all of the project's
major plants. He also abolished the staff unit's Serv-
ice and Control and Technical Divisions, placing
part of their functions in the Administrative Division
(for example, labor relations) and shifting the rest
into special staff elements that reported directlv to
him. Thus, by late 1944, the special staff included
control, research control, safety, and historical
record sections, medical and naval detachment ele-
ments, a public relations and special services office,
a legal adviser, a district inspector, and a special as-
signments officer (cover designation for officer re-
sponsible for liaison with Canadian atomic program
officials). Not on the special staff but functioning as
units in the District headquarters were intelligence
and security, patents, fire protection, and liaison
elements in Washington, D.C.
PART TWO
PRODUCING FISSIONABLE MATERIALS
CHAPTER V
Organizing for Production
In June 1942, the Army took its
first step to form a production organi-
zation for the manufacture of fis-
sionable materials with negotiation of
an AEM (architect-engineer-manager)
agreement with the Stone and Web-
ster Engineering Corporation of
Boston; however, as the complexity of
the AEM job became evident in the
following months, attempts were
made to involve a number of other
leading American industrial and con-
struction firms. The Army's task of
getting the skilled manpower and
technical know-how required to
produce fissionable materials in quan-
tities sufficient to fabricate atomic
weapons was not easy. It was compli-
cated greatly by the absolute necessity
for speed, which meant that contracts
had to be let before the customary
preliminary plans and technical data
were available. This lack of specific
information — blueprints, specifica-
tions, and similar data — was an added
handicap because many of the scien-
tific and technical processes involved
were virtually unknown in industrial
circles. Also, because many industrial
organizations already had committed
most of their resources to war pro-
duction, the managers and engineers
of these organizations were reluctant
to take on additional responsibilities
for a project of such unusual and un-
certain character. The Army therefore
was faced with the problem of some-
how convincing them that the success
of the program was so crucial to the
outcome of the war they simply could
not refuse to participate.
Plutonium Project
The question of who should have
responsibility for carrying through the
plutonium program to the production
stage had been a matter of contro-
versy for some time at the Metallurgi-
cal Laboratory.^ Some of the scien-
tists had proposed that they them-
selves direct the design, development
and engineering, and construction of
the plutonium plant. Metallurgical
Laboratory Director Arthur Compton,
who early in his career had worked as
an employee and consultant for large
electrical companies, knew that this
proposal ran counter to the proce-
dure customarily followed in Ameri-
can industry, namely, the assigning of
research, development, and produc-
tion to separate departments — a prac-
* Paragraphs on the Metallurgical Laboratory
based on Compton, Atomic Qiiesl. pp. 108-10;
Groves, \ou> It Can Be Told. pp. 44-46; DSM Chro-
nology, 25 Jun 42, Sec. 2(e), OROO; Hewlett and
Anderson, Xeiv World, p. 184.
96
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
tice that experience had shown gener-
ally brought the most efficient results.
He suggested that time would be
saved by securing an experienced in-
dustrial firm already accustomed to
carrying out large-scale projects, leav-
ing the research to the Metallurgical
Laboratory staff.
The staff's reaction, he recalled
later, "was a near rebellion." ^ The
younger scientists pointed out that
they had demonstrated their ability to
supervise development of processes
to the stage of large-scale production
by the success they had so recently
achieved in increasing the output of
pure uranium metal and graphite.
After having contributed so much to
its initiation and development, they
wanted to see the plutonium program
through to final fulfillment. And sol-
idly backing them were those labora-
tory scientists who had been born and
educated in Europe. Most of them
were inclined to suspect the motives
of large industrial firms. Also, most
had a more extensive knowledge of
engineering techniques than their
American counterparts learned as a
regular part of their scientific
training.
By early summer of 1942, progress
in research required that a decision
soon be reached. Compton assembled
some seventy-five members of his re-
search and administrative staff to
agree on a plan of organization. It
soon became apparent they were not
going to reach a consensus, so Comp-
ton announced he would proceed
without their approval. At the OSRD
S-1 Executive Committee meeting of
25 June, Compton supported the de-
cision to assign AEM responsibility
Compton, Atomic Quest, p. 109.
for the plutonium as well as the other
processes to Stone and Webster.
Although the S-1 Committee had
suggested that the University of Chi-
cago might operate the pilot facility
to be built in the Argonne Forest area
southwest of the city, no action had
yet been taken. In mid-August,
Compton urged Colonel Marshall that
an operator should be selected
promptly as construction of this unit
was about to begin. He also pointed
out that the operator of the Argonne
chemical facility probably would have
responsibility for the separation works
of the main plutonium plant; there-
fore, the operator's engineering and
design personnel should have an op-
portunity to observe construction of
the plant at Argonne.
As possible operators, Compton
recommended that Marshall approach
E. I. du Pont de Nemours Company,
Standard Oil Development Company,
or Union Carbide and Carbon Corpo-
ration. For reasons of security, Mar-
shall wanted to hold to a minimum
the number of firms to be brought in
to build and operate project facilities.
He proposed that for the time being
Stone and Webster add operation of
the Argonne separation plant to its
other responsibilities. Both Compton
and the engineering firm promptly ac-
cepted this arrangement — the latter,
however, with a proviso that it be per-
mitted to secure technical assistance
from other organizations.
At the Bohemian Grove meeting in
early September, the S-1 Committee
recommended that Stone and Web-
ster get the technical assistance it re-
quired. General Groves, newly ap-
pointed as Manhattan commander,
and Stone and Webster agreed on
ORGANIZING FOR PRODUCTION
97
26 September that Du Pont should
be approached and the S-1 Commit-
tee accepted their decision. Two
weeks later, Du Pont assented to
design and procure not only the
chemical separation equipment but
also part of the pile equipment for
the plutonium pilot plant. At first Du
Pont had resisted taking on any re-
sponsibility for the piles, pleading
lack of experience and strain on its fa-
cilities as a result of its other govern-
ment projects. But Groves and Comp-
ton finally persuaded the company
that this was the logical solution to a
difficult problem.^
Because Du Pont's contract covered
only design and procurement of
equipment and because Stone and
Webster would operate only the Ar-
gonne separation installation, the
most important plutonium production
problem — securing an operator for
the other pilot facilities and the pro-
duction plant — remained to be solved.
Both Groves and Compton were
moving rapidly toward the view that
the size and complexity of this task
required the selection of a company
other than Stone and Webster. The
Manhattan chief paid his first visit to
the Metallurgical Laboratory in early
October 1942. Reviewing the plutoni-
um program with Compton and his
senior staff. Groves quickly concluded
that to bring this process into produc-
tion was going to be a far greater
project than anyone had anticipated.
After further consultation. Groves
=» Marshall Diary, 14, 18, 26 Sep and 2, 9 Oct 42,
OCG Files, Gen Corresp. (iroves Files, Misc Recs
Sec, behind Fldr 5, MDR; DSM Chronolog\, 14-15
Aug 42. Sec. 16, 13 Sep 42, Sec. 2(e), and 26 Sep
42, Sec. 15(b). OROO: Ms, Leslie R. Groves, "Now
It Can Be Told: The Story of the Manhattan
Project" (hereafter cited as (iroves Ms), pp. 95-96,
c;mh
and Compton decided that Stone and
Webster should be relieved of all re-
sponsibility for the plutonium project,
a decision concurred in by both Van-
nevar Bush and James B. Conant.*
As General Groves learned more
about the plutonium process, he also
came to the conclusion that it would
be preferable to turn the entire
project of design, engineering, con-
struction, and operation over to a
single firm. If the proper organization
were chosen, the gain in efficiency of
operation would ease his own task of
coordination. One Du Pont policy, in
particular, impressed Groves. Unlike
most American industrial firms, the
company had a long-established prac-
tice of building its own plants. Hence,
Du Pont had the resources and expe-
rience necessary to carry out all as-
pects of the plutonium production
plant, an advantage from the stand-
point of both security and speed of
getting into production.
When Groves proposed to Comp-
ton, Bush, Conant, and other leaders
that Du Pont be asked to assume sole
responsibility for the plutonium pro-
duction project, replacing Stone and
Webster, he received a generally fa-
vorable response. But the Manhattan
chief was fully aware that several key
members of the Metallurgical Labora-
tory, with whom Du Pont engineers
would have to work quite closely, re-
mained unreconciled to any course
that would take plutonium production
out of their hands. Furthermore,
■* .Account of negotiations with Du Pont drawn
primarily from Groves, Xow It Can Be Told. pp. 46-
52; Memo, sub: Prelim Negotiations . . . Between
I'nited States of America and Du Pont . . . , Incl to
Ltr, R. E. DeRight (Du Pont) to Groves. 30 Oct 43,
OCG Files. Gen Corresp. MP Files, Fldr 2F, MDR;
DSM Chronology, 10 Nov 42, Sec. 23(b), OROO.
98
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
some members of this dissatisfied
group would be especially upset over
the selection of Du Pont, which in
many ways seemed to them to epito-
mize big industry.
Groves, nevertheless, decided to
take immediate steps to negotiate an
agreement with Du Pont. On 30 Oc-
tober, he invited Willis Harrington,
senior vice president of the firm, to
meet with him and Conant, who him-
self once had served as a consultant
to Du Pont. Harrington came the next
day, accompanied by chemist Charles
Stine, also a vice president of Du
Pont and a friend of Conant. Groves
and Conant gave the two Du Pont ex-
ecutives data on the pile program and
general information about the other
processes and the military objectives
of the project, emphasizing the ur-
gency of the program and frankly ad-
mitting there were serious questions
as to its feasibility.
Harrington and Stine were appalled
at the idea that their company should
assume major responsibility for this
phase of the atomic program. As they
perceived it, the technical require-
ments were formidable, the operating
conditions unorthodox, and the scien-
tific field one in which Du Pont had
no special experience and compe-
tence. Faced, however, with Groves's
insistence that Du Pont was the only
industrial organization in America
with the capacity to build the plutoni-
um plant, they reluctantly indicated
the company might be able to do the
job. But a final decision could only be
made by Du Pont President Walter S.
Carpenter, Jr., and other members of
the firm's executive committee follow-
ing an investigation by company
chemists and engineers. Consequent-
ly, a day or two later. Groves granted
the company permission to send a
team of experts to the Metallurgical
Laboratory to see the work in
progress.
On 10 November, General Groves,
Colonel Nichols, the deputy district
engineer, Arthur Compton, and
Norman Hilberry, who was associate
director of the Metallurgical Labora-
tory, went to Wilmington, Delaware,
to plead further for Du Pont's assist-
ance. Groves emphasized to Carpen-
ter that the project was of utmost im-
portance to the war effort, adding
that President Roosevelt, Secretary of
War Stimson, and Chief of Staff Mar-
shall also shared this opinion. Fur-
thermore, he continued, there was
reason to believe the Axis states
might soon be producing fissionable
materials in quantities sufficient to
manufacture atomic weapons. The
only known defense against such
weapons was "fear of their counter-
employment." ^ If the United States
could develop such weapons before
the enemy, it could materially shorten
the war and potentially reduce Ameri-
can casualties by the tens of
thousands.
Following his conference with Car-
penter, Groves went to a meeting of
the Du Pont executive committee.
There, he was joined by Nichols,
Compton, and Hilberry. With Car-
penter presiding at the meeting.
Groves repeated what he had said
earlier to the Du Pont president.
Some committee members expressed
reservations, many of them traceable
to the report of the team of company
chemists and engineers who had just
returned from a visit to the Metallur-
^ Groves, Now It Can Be Told. p. 49.
ORGANIZING FOR PRODUCTION
99
gical Laboratory. The team had re-
ported that the laboratory scientists
had neither demonstrated a self-sus-
taining chain reaction nor furnished
adequate information concerning the
basic problem of controlling and re-
moving the tremendous amount of
heat that would be generated in a pile
operation. And though they were at
work on three different pile designs,
none — at least when judged in terms
of practical engineering — seemed
likely to provide a prototype for a
large-scale production pile. Progress
on the plutonium separation process
did not appear much more encourag-
ing. The scientists had yet to demon-
strate a method that would separate
more than microscopic amounts of
plutonium from radioactive fission
products. On the basis of its observa-
tions, the Du Pont team estimated
that only minute amounts of plutoni-
um could be produced in 1943, not
much more in 1944, and only
enough, possibly, in 1945 to fulfill the
planned rate of production for
weapon purposes.
The pessimistic tone of the Du
Pont executive committee's evaluation
was not surprising; they concluded,
nevertheless, that the pile method was
probably feasible. To be certain of
this, however, they felt Du Pont must
have control over all aspects of the
project. Furthermore, the government
should guarantee the company
against loss from the obviously great
hazards inherent in the process. Car-
penter informed General Groves on
12 November that Du Pont would
take the job, and the Manhattan com-
mander immediately directed Colonel
Nichols to draft the terms of a
contract.
With Du Pont's participation appar-
ently assured, the Military Policy
Committee cautiously endorsed going
ahead with plans to build a plutonium
plant capable of producing 1.0 kilo-
gram of fissionable material per day.
It also directed that Du Pont take
over from Stone and Webster at Chi-
cago, relieving the Boston firm of vir-
tually all of its AEM responsibilities
for plutonium project activities.^
Hardly had that question been set-
tled when important new data cast se-
rious doubt on the explosive charac-
teristics of plutonium. Wallace A.
Akers, technical chief of the British
Directorate of Tube Alloys (corre-
sponding to the S-1 Executive Com-
mittee), was in Washington, D.C., on
14 November to discuss information
exchange with Conant. During a
luncheon conversation, Akers re-
vealed that British atomic scientists
had discovered that plutonium had
premature fissioning tendencies that
might make it unsuitable for use in a
weapon. Greatly disturbed, Conant
checked with Ernest Lawrence and
Arthur Compton. When they told him
that both Oppenheimer and Glenn
Seaborg, a chemist who had done ex-
tensive research on plutonium at the
University of California, Berkeley, ex-
pressed some concern about the pos-
sibility of obtaining material of suffi-
cient purity to ensure the fissioning
qualities in a weapon, Conant got in
touch with General Groves. The Man-
hattan chief responded immediately
by setting up an investigating team
composed of Lawrence, Compton,
« MPC Min, 12 Nov 42, OCG Files, Gen Corresp,
MP Files, Fidr 23, Tab A, MDR.
100
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
and Oppenheimer, as well as physicist
Edwin McMillan."^
On 18 November the four scientists
reported back to Groves in optimistic
terms.® Basing their recommenda-
tions on the conclusion that despite
"many difFicult but solvable problems
it should be possible to produce a sat-
isfactory bomb . . . from 49 [plutoni-
um] probably during 1945," they
urged maximum speed in building a
plutonium production plant. The sci-
entists supported their recommenda-
tions with Oppenheimer's estimate of
the degree of plutonium purity re-
quired for a bomb.
Instead of convincing Conant and
Du Pont of the feasibility of plutoni-
um, Oppenheimer's data had the op-
posite effect. By chance, the Harvard
University president had just received
figures on plutonium purity require-
ments from British scientist Sir James
Chadwick, and when he compared
these with Oppenheimer's, he was
shocked to find that the latter's esti-
mates allowed for a degree of impuri-
ty ten times as great. This discrepancy
was so large that Conant momentarily
suspected American scientists had
erred seriously in their calculations.
Not until he received additional data
and written assurances from Compton
and Lawrence was his confidence in
the feasibility of plutonium fully
restored.^
^ DSM Chronology, 14 Nov 42. Sec. 2(a), and 19
Nov 42, Sec. 23, OROO; Hewlett and Anderson,
Xeu' World, pp. 109-10. See Ch. X for details on
problems with information interchange between the
British and American atomic programs.
* Team's report in Memo (for File), Lawrence,
Compton, Oppenheimer, and McMillan, 18 Nov 42,
Admin Files, Gen Corresp, 401.1-410.2 (Materials),
MDR.
^ Hewlett and Anderson, Xeu> World, pp. 109-10;
Llr, Lawrence to Conant, 23 Nov 42, Admin Files,
Gen Corresp, 201 (Conant), MDR; Ltr, Compton to
As for Du Font's engineers, Oppen-
heimer's estimate appeared so exact-
ing that it would be unattainable in
any reasonable period of time. In
Groves's office on 18 November,
Charles Stine and Crawford H.
Greenewalt, a chemical engineer serv-
ing as chemical director of Du Font's
Grasselli Chemicals Department, com-
plained with some feeling that the
Manhattan commander was asking the
firm to undertake the most difficult
and unpromising of the processes for
producing fissionable materials and
suggested the company might be
better qualified to carry out one of
the other processes. Greenewalt's lack
of enthusiasm at this juncture can be
traced to his pessimistic interpretation
of some information he had received
a short time before, leading him to
conclude that there was only about a
60-percent chance that a sustained
chain reaction would be achieved. ^°
Compton, who was also present,
was shocked by Stine's assertion that
the odds were 100 to 1 against
achieving plutonium production in
time to be of any value to the war
effort. For the Metallurgical Laborato-
ry chief this marked the beginning of
a gradual disillusionment with Du
Font. By the end of December he
would be seriously suggesting that
some other firm be brought in to
build the production plants. Compton
later recalled that he "probably took
Stine's words much more seriously
than they were intended." Neverthe-
Conant, 8 Dec 42, Admin Files, Gen Corresp, 319.1,
MDR.
10 Groves, Xow It Can Be Told p. 52; Ltr. Law-
rence to Conant, 23 Nov 42, MDR; Compton, Atomic
Quest, pp. 132-34. Du Pont purchased the Grasselli
Chemical Company of Cleveland in 1928 and incor-
porated it as a separate department in the firm.
ORGANIZING FOR PRODUCTION
101
less, under those immediate circum-
stances, he felt that he could not
"have drawn such a conclusion with-
out considering the task a waste effort
as far as the present war was con-
cerned." Therefore, Compton deter-
mined immediately to try to change
"their [Du Font's] point of view to
one of optimism." ^^
Reassessment of Processes To
Produce a Bomb
At the meeting on 10 November,
the Du Pont executive committee sug-
gested that a reappraisal of all aspects
of the project would help the compa-
ny in determining the precise role it
should play in the atomic energy pro-
gram. Seeing the logic of this sugges-
tion. Groves and Conant thought the
time was appropriate for a reassess-
ment because project emphasis was
shifting from research and develop-
ment in scientific principles to practi-
cal application on an industrial scale.
Furthermore, the Military Policy
Committee shortly was going to have
to prepare a progress report to the
President on the project. ^^
Leu'is Reviewing Committee
Groves acted promptly to imple-
ment reassessment of the project. On
18 November, following close con-
sultation with Conant, he appointed
a five-man reviewing committee,
headed by Warren K. Lewis, a highly
respected professor of chemical engi-
" Quotations from Compton, Atomic Quest, p. 134.
See also ibid., pp. 132-33, and Groves, Now It Can
Be Told. pp. 55-57.
12 MPC Min, 12 Nov 42, MDR; MPC Rpt, 15 Dec
42, OCG Files, Gen Corresp, MP Files, Fldr 25, Tab
B, MDR.
neering at Massachusetts Institute of
Technology (MIT). Groves made cer-
tain that Du Font was well represent-
ed on the committee, appointing
Crawford H. Greenewalt, who had
been a student under Lewis at MIT
and was an expert on research; Tom
C. Gary, manager of the Design Divi-
sion in the Engineering Department
and a specialist in construction; and
Roger Williams, chemical director of
the Ammonia Department, who was
an expert on plant operations. The
fifth member, Eger V. Murphree of
Standard Oil Development Company
and former head of the OSRD S-1
Section's planning board, became ill at
the last minute and was unable to par-
ticipate in the committee's activities. ^^
The committee's mission was to re-
view the entire project from a manu-
facturing standpoint. To accomplish
this, committee members would visit
Harold Urey's project at Columbia
University, investigate Arthur Comp-
ton's research on the pile process at
the Metallurgical Laboratory, and as-
sess Ernest Lawrence's work on the
electromagnetic process at the Radi-
ation Laboratory. They would not
evaluate the centrifuge method. The
consensus was that this process was
unlikely to produce U-235 in suffi-
cient quantities to be of use during
the war. The Military Policy and S-1
Executive Committees agreed that all
work, including that on a pilot plant,
should be reduced to the minimum
necessary to establish the feasibility of
the method. Although some support
for the centrifuge process still per-
'^DSM Chronolog>', 19 Nov 42, Sec. 23, OROO;
Groves Diary, 18, 19, 21 Nov 42, LRG; Groves, Xow
It Can Be Told, p. 52; Compton, Atomic Quest, pp.
134-35.
102
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
sisled, in lime it would be dropped as a
major method for producing fission-
able material for the bomb.
After conferring briefly with Groves
and Conant in Washington, D.C., on
21 November, the Lewis reviewing
committee began its toiir in New
York. There, committee members met
with leaders of the gaseous diffusion
project and inspected the experimen-
tal equipment in the laboratories at
Columbia University, as well as con-
ferred with respresentatives of the
M. W. Kellogg Company which had
been assigned work on the diffusion
process. Leaving New York by train,
the committee reached Chicago on
the twenty-sixth. Thanksgiving Day.^'*
Compton had first heard about the
committee's impending visit on the
nineteenth. Sensing that the occasion
would afford him the chance to con-
vince Du Pont and the leaders of the
Manhattan Project that plutonium
could be produced in quantity, and
also that the rest of the atomic pro-
gram was feasible and of great impor-
tance for the war, he and his scientific
staff immediately had directed all pos-
sible resources into a twofold effort:
completing as soon as possible the
chain reaction experiment under way
since October, and preparing a report
to demonstrate conclusively the feasi-
bility of the plutonium project. ^^
Unfortunately the experiment was
still in progress when the committee
arrived, but a hundred-page feasibility
report was ready for study. This care-
fully organized and documented
report presented a most optimistic es-
timate of the situation. Plutonium
could be produced in one or more of
several types of chain-reacting piles,
of which a uranium-graphite system
cooled with helium, preferably, or
with ordinary pure water seemed to
offer the most practical solution.
Also, chemical extraction of plutoni-
um in a sufficiently pure state to be
used successfully in a bomb was feasi-
ble. Moreover, this bomb would prob-
ably be more effective than previous
estimate had indicated. Provided the
plutonium project received adequate
support, the goal to produce suffi-
cient fissionable material in 1944 and
to attain the production stage in 1945
should be possible. Report in hand,
the committee left for Berkeley
Thanksgiving evening. ^^
Achievement of the Chain Reaction
The Lewis reviewing commitee re-
turned from the West Coast via Chi-
cago on 2 December. Stopping over
between trains, they consulted further
with the Metallurgical Laboratory
staff. "Lm sorry," Compton ex-
plained, "but Enrico Fermi has an im-
portant experiment in hand in the
laboratory and has asked to be
excused." ^^
The "important experiment" was,
of course, the continuing attempt to
achieve a controlled chain reaction in
the experimental pile then under con-
struction at the Metallurgical Labora-
tory. In October, after laboratory sci-
entists had accumulated a sufficient
amount of uranium metal and graph-
'^MPC Min. 12 Nov 42. MDR; DSM Chronology,
14 Nov 42, Sec. 2(0, and 19 Nov 42, Sec. 23,
OROO.
^^Compion, Atomic Qiust, p. 135.
"^Ibid., pp. 135-36; Rpt, Compton, sub: Feasibili-
ty of "49" Proj, 26 Nov 42, OSRD; Smyth Report,
Ch. 6, especially pp. 64-65 and 74-76. Smyth based
this chapter largely on the feasibility report.
"Compton, Atomic Qiiest, p. 140.
ORGANIZING FOR PRODUCTION
103
ite of requisite purity, two alternating
teams began piling graphite blocks in-
termixed with lumps of uranium in a
carefully devised pattern atop a
timber framework on the floor of a
squash court under the West Stands
of Stagg Field, the University of Chi-
cago football stadium. When news of
this ongoing experiment reached
Groves and Conant during the 14 No-
vember S-1 meeting, both men ex-
pressed great alarm; however, but-
tressed with evidence from several
tests carried out while the pile was
under construction and supported by
the senior scientists on his staff,
Compton assured Groves and Conant
that the experiment posed no great
hazard to the heavily populated area
adjacent to the university. Although
Groves decided not to interfere, he
nevertheless alerted the area engineer
at the Metallurgical Laboratory to
inform him immediately of any signs
or developments that indicated the
Chicago scientists were underestimat-
ing the element of danger. ^^
Based on the results of earlier ex-
periments, the scientists constructing
the pile knew that when it reached a
certain size it would become critical,
thus initiating what was hoped would
be a self-sustaining chain reaction. To
prevent the possibility of premature
fission and also to be able to control
the reaction once it began, the scien-
tists inserted several neutron-absorb-
ing cadmium strips as control rods.
Removal of these control rods would
release the flow of neutrons in the
lumps of uranium and permit the
chain reaction to begin; their reinser-
tion would halt the process. Various
measuring instruments also were at-
'» Groves, Xow It Can Be Told, pp. 53-54.
tached to or placed in the pile, and
the whole setup was watched over by
Fermi and his colleagues with all the
care and nervous intensity that so
unique and critical an experiment
inspired.
Late in the afternoon of 1 Decem-
ber, Fermi's crew placed the last lump
of uranium and layer of graphite
blocks on the pile, by now a massive
structure, essentially square in shape
and solid-appearing from the floor up
to about two-thirds of its height, and
from that point to its top near the
high ceiling, a series of setbacks.
On the morning of 2 December,
the entire experimental group assem-
bled for the crucial test. Most of
those present were on the balcony of
the court, either as observers or oper-
ators of the instrument control cabi-
net located there. Norman Bilberry,
equipped with an axe, was prepared
to sever a rope tied to the balcony
rail, which would drop into place an
emergency safety rod suspended over
the pile. A young scientist from the
laboratory staff, George Weil, re-
mained on the floor of the court to
handle the final control rod. On a
platform above the pile, three men
stood ready to flood it with a cadmi-
um salt solution, which would absorb
sufficient neutrons to halt a runaway
reaction if the pile's other control
mechanisms should fail. A hundred
feet away, behind two concrete walls,
another group monitored the test by
means of instruments and an inter-
communication system. Should any-
thing go wrong on the squash court,
incapacitating the group there, the
"remote control" men could throw a
switch to activate electrically operated
104
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
safety rods and halt the chain
reaction.
In midmorning, Fermi sent word to
Compton that the test was about to
begin and the Metallurgical Laborato-
ry chief, accompanied by Crawford
Greenewalt, whom he had selected as
the representative of the Lewis re-
viewing committee, hastened from
nearby Eckhart Hall to the stadium.
As they arrived, Fermi was testing the
pile systematically. As Weil slowly
withdrew the final control rod, Fermi
carefully checked the recording in-
struments. With each foot the rod was
pulled out, the pile came closer to
criticality, and the instruments meas-
uring the neutron activity clicked
faster. By about 11:30 a.m. the grow-
ing tension among the scientists in
the squash court had become obvi-
ous. "I'm hungry," said Fermi, sud-
denly breaking the spell. "Let's go to
lunch."
Shortly after 2:00 p.m. the tests
were resumed. Faster and faster
clicked the neutron counters as the
control rod was slowly withdrawn. At
about 3:25, Weil moved the rod an-
other foot. Fermi made a rapid com-
putation with his slide rule and, turn-
ing to Compton, exclaimed: "This is
going to do it." As the neutron count
ran faster, it was obvious Fermi was
right. The rate of rise of the count
was now constant. "The reaction is
self-sustaining," announced Fermi,
meaning that the slow fissioning of
uranium atoms in the pile would con-
tinue to produce enough neutrons to
keep the process going.
After nearly half an hour of oper-
ation, when the radiation around the
pile began to rise to dangerous levels,
Fermi ordered the control rods rein-
serted. The world's first self-sustain-
ing nuclear reaction had been initiat-
ed, allowed to run, and then stopped.
Man had accomplished the controlled
release of atomic energy. ^^
Lewis Reviewing Committee Report
While practical demonstration of a
chain reaction did much to relieve the
hesitancy of Du Pont, the company's
management was perhaps even more
encouraged by the report of the
Lewis reviewing committee, submitted
on 4 December. On the premise that
"production must be substantially 25
kilos of '25' [U-235] or 15 kilos of
'49' [plutonium] per month," the
committee felt that the diffusion pro-
cess had the best chance of producing
enough fissionable material of the de-
sired quality and, equally important,
that it would probably be the first to
attain full-scale production. They
agreed that the electromagnetic pro-
cess was probably the most immedi-
ately feasible of all methods under
consideration, but it seemed least
likely to produce U-235 in the quanti-
ty that would be needed. Despite
problems, the pile process now had a
much better chance of success and
might even provide "the possibility of
earliest achievement of the desired
result." Accordingly, the committee
recommended construction of a diffu-
'' Quotations from WD Press Release, "Back-
ground Material for L'se in Connection With Ob-
servance of the Fourth Anniversary, December
Second, of the Scientific Event of Outstanding Sig-
nificance in the United States Program of Develop-
ment of Atomic Energv," 1 Dec 46, pp. 10-11,
CMH. See also Compton, Atomic Quest, pp. 136-43;
Smyth Report, pp. 70 and 177-81; Enrico Fermi,
"The First Pile," Bulletin of the Atomic Scientists 18
(Dec 62): 19-24. Many of the other published works
cited in this volume also contain lengthy descrip-
tions of this event.
ORGANIZING FOR PRODUCTION
105
sion plant, of a pile pilot plant and
several full-scale production piles,
and of facilities for producing heavy
water. It urged continued develop-
mental work on the electromagnetic
process, including building a pilot
plant to produce small quantities of
U-235 for use in experiments. Finally,
the committee recommended that
companies with appropriate experi-
ence be given the responsibility nec-
essary for operating all these projects.
There no longer seemed any doubt
concerning the feasibility of produc-
ing sufficient quantities of fissionable
material. ^°
When the Military Policy Commit-
tee met on 10 December in General
Groves's office, it had before it the
report of the Lewis reviewing commit-
tee. The effect of this report and the
events that had taken place in Chicago
a week earlier were evident. At its
meeting on 12 November, the Mili-
tary Policy Committee had agreed to
proceed with the construction and op-
eration of a small electromagnetic
separation plant; a pilot diffusion
plant and, if practicable, a small pro-
duction plant; and a plutonium
plant. ^^ Now a month later, the com-
mittee's decisions were far more opti-
mistic. The pile method for produc-
ing plutonium, it decided, would "be
carried forward full blast." Design for
the pilot diffusion plant was well ad-
vanced and construction of test units
was already under way at Columbia
University. But rather than await com-
pletion of the pilot plant, the commit-
tee decided that work on the design
and construction of a full-scale pro-
duction plant should begin at once.
The electromagnetic plant would be
comprised of only 500 tanks "in
order to get the earliest possible pro-
duction of material, even though it
may be in small quantities." ^^ Thus,
the Military Policy Committee had
opened the way to rapid development
of those processes that seemed most
likely to provide large-scale produc-
tion of fissionable materials.
Contract Negotiations
In rapid sequence during the next
few weeks. Groves and the Manhattan
staff oversaw negotiation of construc-
tion and operation contracts. The
first of these was a letter contract for
Du Pont on 21 December (effective as
of 1 December 1942), pending com-
pletion of negotiations for a formal
contract. It provided that the com-
pany secure designs, procure equip-
ment, and erect facilities for a large-
scale plutonium production plant,
which it would also operate. Although
the agreement of I December super-
seded the letter contract of 3 Octo-
ber, which had provided that Du Pont
design and procure equipment for
plutonium pilot installations, it did
not specify that the firm would build
a pilot plant. New location problems
had made temporary postponement
of settling this aspect expedient. ^^
^° Conclusions of Reviewing Committee, 4 Dec 42,
Admin Files, Gen Corresp, 334 (Special Reviewing
Committee), MDR. These conclusions, but without
the statistical analysis portion, are also in the MPC
Rpt, 15 Dec 42, MDR. See also Compton, Atomic
Quest, p. 145.
2> MPC Min, 12 Nov 42, MDR; Groves Diarv,
10 Dec 42, LRG.
" MPC Mm, 10 Dec 42, MDR; MPC Rpt, 15 Dec
42, MDR.
23 Ltr Contract W-7412-eng-l, 1 Dec 42 (accept-
ed 21 Dec 42), Tab B; Ltr, E. B. Yancey (Gen Mgr,
Explosives Dept, Du Pont) to Lt Col J. M. Harman,
21 Dec 42, Incl to Memo, Maj A. Tammaro to Maj
Continued
106
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Du Pont did not want to manufac-
ture plutonium after the war and
made ckar it was agreeing to do so
now only because of the expressed
desire of the Army. Accordingly, in
the cost-plus-fixed-fee contract, Du
Pont waived all profits and accepted
the assignment on the basis of reim-
bursement for the company's ex-
penses on the project, plus a fixed fee
of $1.00. However, arrangements
were made to protect the firm from
financial losses that might arise, be-
cause the hazards concomitant to the
new process were not yet fully known
or understood and conceivably could
result in catastrophic losses for the
company. Du Pont requested that the
contract be submitted to the comp-
troller general of the United States
for approval, particularly the sections
covering reimbursement and indemni-
fication, which the company feared
might otherwise be upset by a future
ruling. General Groves agreed and, as
further assurance to Du Pont, Vanne-
var Bush also forwarded a letter to
President Roosevelt, explaining the
basis upon which the government was
assuming responsibility for the unique
hazards involved in the project. ^^
The Army had to negotiate with a
number of companies for design, con-
struction, and operation of the gase-
Claude C. Pierce, Jr. (Washington Liaison OfTice),
sub: Du Pont Contract W-7412-eng-l, 5 Dec 44,
Tab G. Both in OCG Files, Gen Corresp, Groves
Files, Fldr 19, MDR. Copies of formal contract,
completed on 8 Nov 43, on file in OROO. See also
amendments and amplifications to this contract,
same file, and Du Pont, Stockholders Bulletin, 13 Aug
45, Admin Files, Gen Corresp, 161 (Du Pont),
MDR.
2* Groves, \ow It Can Be Told. pp. 46-59; Memo,
sub: Prelim Negotiations . . . , Incl to Ltr, De-
Right to Groves, 30 Oct 43, MDR; DSM Chronolo-
gy, 10 Nov 42, Sec. 23(b), OROO; Compton, Atomic
Quest, pp. 131-34.
ous diffusion plant. Because the M. W.
Kellogg Company had been work-
ing for nearly a year on research and
design for a pilot plant, the Military
Policy Committee decided at its
10 December meeting that this firm
should also design and engineer the
production plant. Hence, on the
twelfth. General Groves requested
Kellogg to act as architect-engineer
for the diffusion project and, two days
later, the company signed the neces-
sary letter contract. To simplify oper-
ations and for reasons of security,
Kellogg created a wholly-owned sub-
sidiary, the Kellex Corporation, ^^ for
the project. After consulting with
Kellex representatives, the Manhattan
commander asked Union Carbide and
Carbon Corporation to operate the
plant. By late January, the Carbide
and Carbon Chemicals Corporation —
a subsidiary of Union Carbide — had
signed a Manhattan letter contract
and its engineers had begun working
closely with Kellex on difficult design
problems.
While earlier plans had called for
Stone and Webster to build the diffu-
sion plant, it soon became clear this
job would overburden the engineer-
ing firm's already heavily taxed re-
sources. Some consideration also was
given to having Kellex construct the
plant, but Groves decided that organi-
zation would have its hands full with
the design and engineering problems.
Groves remembered that he had been
favorably impressed by the manage-
ment, skill, and integrity of the J. A.
Jones Construction Company of
Charlotte, North Carolina, which had
25 The name Kellex was derived from "Kell" for
Kellogg and "X" for secret.
ORGANIZING FOR PRODUCTION
107
built several large camps for the
Army. The company accepted a letter
contract covering this assignment on
18 May 1943.26
Arrangements already had been
made for Stone and Webster to build
the electromagnetic plant; however,
because project leaders had decided
that the task of operating the plant
would be beyond the firm's practical
capabilities, Groves offered the job to
the Tennessee Eastman Corporation,
a subsidiary of the Eastman Kodak
Company, which had considerable ex-
perience in chemical processes. On
5 January 1943, Tennessee Eastman
informed Groves that it would accept
the job and the next day signed a
letter of intent, pending negotiation
of a formal contract. Within a few
days key personnel of the company
went to the Radiation Laboratory at
Berkeley to familiarize themselves
with Lawrence's experimental electro-
magnetic separation units. ^^
26MPC Min, 10 Dec 42 and 21 Jan 43. MDR;
DSM Chronology, 12 Dec 42, Sec. 4, 28 Dec 42,
Sec, 15(b), 30 Dec 42, Sec. 16, 14 Jan 43, Sec. 2(f).
OROO; Groves, \ow It Cati Be Told. pp. 111-12;
MDH, Bk. 2, Vol. 3, "Design," Sec. 3, Vol. 4, "Con-
struction," Sec. 3. and Vol. 5, "Operation," pp. 2.1-
2.4, DASA. Copies of formal CPFF contracts execut-
ed with M. W. Kellogg Co. on 1 1 Apr 44 (Contract
W-7405-eng-23, efTective 14 Dec 42), with Carbide
and Carbon Chemicals Corp. on 23 Nov 43 (Con-
tract W-7405-eng-26, efTective 18 Jan 43), and with
J. A.Jones Construction Co. on 2 Mar 44 (Contract
W-7421-eng-ll, effective 18 May 43) on file in
OROO. See also l.ist. sub: Signed Prime and Sub-
contracts Over $100,000, Incl to Memo, 1.1 Col K.
H. Marsden (Ex Off, MD) to Groves, 31 Aug 43,
Admin Files, Gen Corresp, 161, MDR.
" Groves, Xow It Can Be Told. pp. 96-97; DSM
Chronology, 28 Dec 42, Sec. 2(e), OROO; MDH,
Bk 5, Vol. 6, "Operation," Sec. 2, DASA. Groves
Diarv, 30-31 Dec 42 and 5 Jan 43, l.RG. Copv of
formal CPFF contract executed with Tennessee
Kastman Corp. on 7 Jun 43 (Contract W-7401-eng-
23, effective 6 Jan 43) on file in OROO.
Upon examining the plans for vari-
ous types of piles at the Metallurgical
Laboratory in early November 1942,
Du Pont engineers had rated the pile
with a heavy water moderator second
only to the helium-cooled graphite
pile. It now appeared to be the logical
choice "as a second line of defense"
in case the graphite pile should fail.
Accordingly, Du Pont recommended
that the Manhattan commander take
immediate steps to increase the
monthly production of heavy water to
approximately 3 tons per month: 0.5
tons to be produced by the electrolyt-
ic process at the Trail plant already
under construction, and 2.5 tons by
the distillation process at new plants
to be built by Du Pont as adjuncts to
ammonia-producing facilities already
under construction by the company at
government-owned ordnance plants.
(At the request of the S-1 Committee,
Du Pont earlier had investigated and
ascertained the practicability of em-
ploying the distillation process to
produce heavy water.) ^^
Both the Military Policy and S-1
Committees endorsed Du Pont's rec-
ommendations. Under the terms of a
letter contract of 16 November, Du
Pont agreed "to select a process and
provide facilities for the production of
heavy water in order to make avail-
able a supply of this material at the
earliest possible date." ^^ Groves au-
thorized the company to expand fa-
cilities under construction at Morgan-
town Ordnance W'orks, near Morgan-
's DSM Chronologv, 10 Nov 42. Sec. 23(i), and
14 Nov 42. Sec. 2(0(k-m), OROO; MDH, Bk. 3,
"The P-9 Project," p. 2.4, DASA.
29 Copv of I.tr Contract W-74 12-eng-4, 16 Nov
42, on file in OROO. See also MPC Min, 12 Nov
42. MDR.
108
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
town, West Virginia; the Wabash
River Ordnance Works, adjacent to
Newport, Indiana; and the Alabama
Ordnance Works, near Sylacauga,
Alabama. {See Map 2.) Du Pont would
build and operate the facilities,
making as extensive use as possible of
existing steam plants and other instal-
lations. Because Du Pont already had
contracts with the Army's Ordnance
Department for construction and op-
eration of munitions-making facilities
at each of these ordnance plants, it
was agreed the additional work could
be covered by supplements to these
contracts, thus eliminating the need
for the Manhattan chief to negotiate
new agreements. Nevertheless, for
reasons of security, each heavy water
plant was to be built and operated
almost entirely under the immediate
supervision of the local area engineer
and general supervision of the Man-
hattan District. The Ordnance De-
partment, in Colonel Marshall's
words, was "not to be involved in the
design or knowledge of use of the
product." ^°
Hanford Engineer Works
Until November 1942, project lead-
ers had assumed that the main pluto-
nium production plant would be
30Di.st Engr, Monlhlv Rpt on DSM Proj, 21 Jan
43, OCG Files, Gen Corresp, MP Files, Fldr 28, Tab
A, MDR, DSM Chronolog>, 29 Dec 42, Sec. 4,
OROO; Memo, Brig Gen R. F. Handy (Asst, OCO)
to Maj G. W. Boush (Ord Ammo Prod Office), sub;
New Goustr at Alabama Ord Works . . . , 13 Jan 43,
Admin Files, Gen Corresp, 161 (Du Ponl), MDR;
Memos, Handy to Alabama, Morgantown, and
Wabash River Ord Works CO's, sub: New Constr at
Alabama [and other] Ord Works, 1 Jan 43, Admin
Files, Gen Corresp. 600.1 (Constr), MDR; MDH, Bk.
3, Sees. 2-3. DA.SA; Groves Ms, pp. 214-15, CMH.
located at the Tennessee site.^^ How-
ever, Du Pont was greatly concerned
about the hazards of manufacturing
plutonium on a large scale. An atomic
explosion might devastate an area
surrounding a plant and send a lethal
cloud of radioactive dust and gases
over a much larger zone. Such an ex-
plosion less than 20 miles from Knox-
ville could be a catastrophic disaster.
Groves himself already had qualms
about placing a hazardous operation
adjacent to electromagnetic and gase-
ous diffusion plants and near other
important war production facilities in
the Tennessee Valley Authority
(TVA) region. Even if the physical ef-
fects were limited, an explosion
would compromise the security of the
whole project. If the plant were to be
built at the Tennessee site, more land
than originally contemplated would
have to be acquired, a time-consum-
ing process. Furthermore, there was a
strong possibility that a power and
labor shortage in the TVA area might
*' Section based on Groves, Sow It Can Be Told,
pp. 69-77: DSM Chronology, Nov 42-Jan 43,
passim, OROO; MDH, Bk. 4, Vol. 3, "Design," Sec.
2, and Vol. 4, "Land Acquisition," Sees. 1-2, DASA.
Diary of Col Franklin T. Matthias (hereafter cited as
Matthias Diary), prior to 1 Feb 43, OROO; Rpt, Du
Pont, sub: Special Investigation of Plant Site Loca-
tion, 2 Jan 43, Incl to Ltr, E. G. Ackart (Engr Dept
chief, E)u Pont) to Groves, sub: Pio 9536. 5 Jan 43,
Admin Files, Gen Corresp, 600.03, MDR; Rpt, OCE,
sub: Basic Data on Hanford Engr Works, 19 May
43, same files, 601 (Hanford), MDR; Ltr, Robins
(Act Chief of Engrs) to CG SOS, sub: Acquisition of
Land for Cable Proj, Pasco. Wash., 8 Feb 43, Incl to
Memo, O'Brien to I.t Col Whitney Ashbridge (CE
Mil Constr Br), sub: Land Acquisition in Connection
With MD, 17 Apr 43, same files, 601 (Santa Fe),
MDR; Smyth Report, p. 81; MPC Rpt, 15 Dec 42,
MDR; Compton, Atomic Quest, p. 166; Ltr, Groves to
Herbert S. Marks (Power Div, WPB), 7 Feb 43, and
related correspondence. Admin Files, Gen Corresp,
675, MDR.
ORGANIZING FOR PRODUCTION
109
interfere with construction and oper-
ation of the plutonium plant.
All of these factors entered into the
decision of the Military Policy Com-
mittee on 10 December that "a new
plant site [for plutonium production]
will have to be selected in an isolated
area, but near power and water." ^^
Groves sent Colonel Nichols and Lt.
Col. Franklin T. Matthias to Wilming-
ton on the fourteenth to discuss
choice of a new site with Du Pont of-
ficials and with Compton and other
representatives of the Chicago
project. Matthias, an experienced civil
engineer in civilian life, had been
working with Groves on various prob-
lems, including the atomic energy
program, and, while he had not yet
been officially assigned to the Man-
hattan District, he was Groves's tenta-
tive choice for the key position of
area engineer on the plutonium
project. The Wilmington conference
concentrated on developing guide-
lines, with the main emphasis on
safety limitations, for the new site.
When Matthias returned, Groves di-
rected him to make an inquiry con-
cerning sites where sufficient electrici-
ty would be available.
Matthias consulted first with those
Corps of Engineers officials whom
Groves had indicated would know a
great deal about the wartime power
situation. As a result, when he sat
down with Groves and two Du Pont
officials on 16 December to draw up
more specific plans, he had consider-
able information about potential sites.
The precise criteria that emerged
from this discussion indicated that the
site selected would have to be rela-
tively large, isolated from centers of
32MPC Min, 10 Dec 42. MDR.
population, easily acquired, and with
access to a large amount of water and
power. Based on the estimated space
needed for six atomic piles and three
separation plants, an area 12 by 16
miles would be necessary for the pro-
duction facilities alone. This amount
of space would allow for contingen-
cies well beyond the then anticipated
requirements. It would permit a dis-
tance of 1 mile between each of the
piles and 4 miles between each of the
separation plants. Laboratories would
have to be at least 8 miles away from
these separation plants, and the work-
ers' village and nearest railroad or
highway at least 10 miles away. About
100,000 kilowatts of continuous
power would be required, as well as
25,000 gallons of water (preferably
soft) per minute for use in cooling
the piles. A relatively mild climate,
level terrain, a ready supply of sand
and gravel, and ground and subsur-
face conditions favorable for heavy
construction were also desirable for
speed and economy in building the
various facilities. And finally, along
with other considerations, an area of
comparatively low land values would
reduce costs and facilitate acquisition.
As Groves, Matthias, and the two
Du Pont representatives visualized it,
the site would contain at least 700
square miles, with no main highway
or railroad traversing it. This central
area would consist of a restricted
zone, 24 by 28 miles in size, in the
center of which would be a 12- by 16-
mile plant area. If possible, the site
should be centered in a sparsely pop-
ulated area, 44 by 48 miles in size,
with no towns of more than one thou-
sand inhabitants. The outer 10 miles
of this last-named area would consti-
110
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
tute a buffer zone from which all resi-
dents would be removed, although it
would not necessarily have to be pur-
chased by the government.
Groves favored the Pacific North-
west, convenient to the growing
power resources of the great Bonne-
ville Power Administration (BPA) on
the Columbia River. {See Map 2.) In
this he was supported by Brig. Gen.
Thomas M. Robins, the assistant chief
of the Corps of Engineers, and Carl
H. Giroux, the Corps' chief power
expert, who also suggested possible
sites in the southwest as alternate
choices.
Matthias and the Du Pont repre-
sentatives investigated possible site
locations from the California-Arizona
border near Hoover Dam to the great
Grand Coulee Dam in northeast cen-
tral Washington. They checked a
score of potential locations and stud-
ied maps and detailed reports pre-
pared by the Los Angeles, Sacramen-
to, and Seattle district engineers.
Four sites appeared promising: two in
Washington — one near Grand Coulee
Dam and the other in the vicinity of
Hanford, a community in the south
central part of the state; a third on
the Pit River, near the almost com-
pleted Shasta Dam in northern Cali-
fornia; and the last on the California-
Arizona border in the Needles-Blythe
area, easily accessible to power from
Hoover Dam. Because Matthias and
his colleagues strongly favored the
Hanford location. General Groves
directed Col. John J. O'Brien, head of
the Engineers' Real Estate Branch, to
begin a preliminary appraisal of the
site. Meanwhile, Groves also made a
personal inspection of the area on
16 January 1943 and gave it his
approval.
Before asking for War Department
authorization for acquisition of the
Hanford site. Groves sought and re-
ceived the BPA's assurance that it
could provide adequate power when
needed. The site selection team had
found that the BPA's only recently
completed trunk transmission line
running between Grand Coulee and
Bonneville Dams traversed the west-
ern portion of the projected Hanford
site, with a major substation located
at Midway, just outside the site area.
This meant that a connection into the
BPA system could be made quickly,
guaranteeing an initial power supply
for plant operations as soon as
needed.
The Hanford Engineer Works, as
the plutonium production site was
designated officially, comprised about
670 square miles (slightly smaller
than contemplated) in an isolated part
of the south central Washington
region near the confluence of the Co-
lumbia and Yakima Rivers. It lay pri-
marily in Benton County, but also in-
cluded parts of Yakima, Grant,
Adams, and Franklin Counties. Very
sparsely settled, the site included only
three tiny communities: Hanford,
White Bluffs, and Richland. A few
miles to the southeast was the larger
town of Pasco, an important rail
center. Yakima, some 20 miles to the
west, was a small city serving as a
trade center for a surrounding rich
agricultural area.
The major population centers of
Seattle, Tacoma, Portland, and Spo-
kane were all more than 100 miles
distant. The Columbia River provided
ample cold water of unusually high
purity for cooling; the terrain and cli-
mate were close to ideal. Bounded
ORGANIZING FOR PRODUCTION
111
generally on the south by the Yakima
River, on the east and north by the
Columbia, and on the west and south-
west by a steep 3,500-foot ridge line,
the site was, for the most part, flat or
slightly rolling, with only the 1,000-
foot-high Gable Mountain rising to
the north from the otherwise unbro-
ken terrain. Excellent rail transporta-
tion lines ran nearby and a fairly ex-
tensive, existing road system could be
extended without much difficulty over
the level terrain.
The shape of the site was irregular,
but roughly circular, extending on a
north-south line about 37 miles at its
widest point and with a maximum
east-west breadth of about 26 miles.
The tentative plan called for purchase
of a little less than half of the land
and for lease of the remainder. The
outer 10-mile security buffer zone was
no longer considered necessary, but
two smaller areas totaling some 60
square miles, adjacent to an impor-
tant sector of the site, were to be
leased for security purposes. The esti-
mated cost of acquiring the entire site
was slightly over $5 million.
With Under Secretary of War Pat-
terson's approval on 9 February, ac-
quisition began immediately. By late
spring much had been acquired, but
gaining control of the entire site
would be a long process. Had Gen-
eral Groves been able to foresee the
troubles that lay ahead, he might well
have selected another site.^^
Plutonium Semiworks: Argonne
vs. Tennessee
The decision to shift the site of the
main plutonium production plant
from Tennessee to the Pacific North-
west threw open to question once
again the location of the semiworks
for the pile process.^'* In December
1942, after learning that the main
production facilities probably would
not be built at the Tennessee site,
Arthur Compton and his Metallurgi-
cal Laboratory staff favored going
back to the original plan of centering
plutonium experimentation, testing,
and pilot plant production of fission-
able material at the conveniently situ-
ated Argonne Forest site.^^ {See Map 2.)
But Du Pont, having full respon-
sibility for the plutonium program,
strongly opposed this alternative. Du
Pont engineers placed considerable
emphasis on the hazards involved in
setting up operations near a large
^^ See Ch. XV for a detailed account of land
quisition at the Hanford site.
^^ A semiworks is a developmental plant in which
the equipment and the amounts of materials used
are larger than those employed in regular laboratory
research. In the context of this discussion, the term
semiworks refers to the intermediate stage for trans-
forming research data into a large-scale production
process. See MDH, Bk. 4, Vol. 1, "General Fea-
tures," App. A3, and Vol. 2, "Research," Pt. 2, pp.
2.1-2.3, DASA.
^^ Subsection based on Compton, Atomic Quest,
pp. 150-52 and 170-72; Groves, Now It Can Be Told,
pp. 68-69; DSM Chronology, 13-14 Sep 42, each
Sec. 2(a), OROO; ibid., 6, 8-9 Jan 43, each Sec. 3.
OROO; ibid., 16 Jan 43, Sec. 5, OROO; Min. Tech
Council, 10 and 28 Dec 42 (Rpt CS-371), ANL;
Hewlett and Anderson, Aw World, pp. 190-91;
Supp. No. 1,4 Jan 43. to Ltr Contract W-7412-
eng-1, 1 Dec 42, OCG Files, Gen Corresp, Groves
Files, Fldr 19, Tab B, MDR; Completion Rpt, Du
Pont, sub: Clinton Engr Works, TNX Area, Contract
W-7412-eng-23, 1 Apr 44, p. 2, OROO; Ltr, Wil-
liams to Yancey, 12 Jan 43, Admin Files, Gen Cor-
resp, 337 (Univ of Chicago), MDR; Groves Diary, 9-
11 and 16 Jan 43, LRG; MDH, Bk. 4, Vol. 2, Pt. 2,
pp. 3.1-3.2, DASA.
112
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
metropolitan area; they did not think
there would be enough room at the
Argonne site; and they also saw cer-
tain disadvantages in having the
semiworks readily accessible.
Du Pont also objected to the Metal-
lurgical Laboratory staff assuming it
could dictate plans and policies on
matters that the company held to be
its own prerogatives. Compton had
already detailed physicist Martin D.
Whitaker, who had worked with Fermi
on the first pile, and other staff mem-
bers to supervise development of re-
search facilities that would operate in
connection with the semiworks. Du
Pont, however, had a long-established
policy that a research staff must not
be permitted to exert too much con-
trol over the design and construction
phases of a project. When this hap-
pened, the company had found, the
staff had a tendency to keep making
changes that seriously interfered with
construction progress. In the world of
industry, Du Pont felt, the research
laboratory was the servant of manage-
ment, not its master.
General Groves realized that if the
differences between the Metallurgical
Laboratory scientists and the Du Pont
industrial engineers could not soon
be resolved, there was serious ques-
tion as to whether they would ever
function efficiently as a team. From
the Army's point of view, achievement
of a harmonious working agreement
on the design, construction, and loca-
tion of the semiworks was crucial, not
only for present operations but also
for future plans regarding the main
production plant. Now that Du Pont
had made significant progress on its
design and procurement of essential
equipment for the works, both Groves
and Du Pont officials felt that no fur-
ther delays could be tolerated. Fur-
thermore, the efforts of Crawford
Greenewalt, Du Pont's liaison repre-
sentative, to establish an agreement
with the Chicago scientists had not
been too successful. Consequently, on
4 January 1943, Du Pont accepted the
Army's alternative solution that the
company design and construct the
buildings to house the pilot pile and
chemical separation facilities.
The Army-Du Pont agreement,
however, still left the question of the
location of the semiworks unsettled,
and this issue was the main item on
the agenda of a conference held in
Wilmington on 6 January. Hoping to
get a prompt decision. General
Groves sent two of his ablest officers
from District headquarters — Colonel
Nichols and Lt. Col. E. H. Marsden —
to assist the area engineer at Wilming-
ton, Maj. William L. Sapper, in pre-
senting the Army's views to the repre-
sentatives of Du Pont and the Metal-
lurgical Laboratory. The Manhattan
chief's strategy succeeded; the meet-
ing closed with a tentative agreement
that the semiworks be erected at the
Tennessee site.
The tentative agreement almost,
but not quite, settled the issue. Under
a previous agreement governing rela-
tions between Du Pont and the Metal-
lurgical Laboratory, all important de-
cisions had to receive final approval
from both Compton and Greenewalt.
Greenewalt's assent was a foregone
conclusion, but Groves knew that
Compton was not likely to give in
without at least an effort to salvage
something for the Argonne site. In
anticipation of this, he sent Colonel
Nichols to Chicago.
ORGANIZING FOR PRODUCTION
■.Mtm
113
Col. E. H. Marsden ( 1946 photograph). Marsden became executive officer of the
Manhattan District in July 1943.
Conferring with Compton and his
assistant, Norman Hilberry, Colonel
Nichols stressed the greater safety of
the Tennessee site. Nichols's argu-
ment, however, failed to alter Comp-
ton's conviction that the Argonne site
was adequately safe and eminently
suitable. Furthermore, he contended,
to shift to Tennessee now would be a
severe blow to the morale of his labo-
ratory staff. The Metallurgical Labo-
ratory did not have enough scientists
and technicians to staff another major
research center in addition to those at
Chicago and Argonne. If the decision
was going to be to erect the
semiworks in Tennessee, Compton
concluded, then the Argonne Labora-
tory should be authorized to build for
its own use a pile of sufficient size to
produce the supply of plutonium it
needed for experimental purposes.
Nichols suggested to Groves that a
meeting between Compton and Roger
Williams, head of Du Font's TNX Di-
vision (the company's special organi-
zation for carrying out its atomic
energy program commitments), might
pave the way to an agreement. Sens-
ing that the time had arrived for deci-
sive action on his part. Groves imme-
diately arranged to meet with Wil-
liams, Compton, Hilberry, and Fermi
on 11 January in Chicago. Colonel
Marshall also came from District
headquarters in New York to assist in
pressing for a decision.
The meeting opened with Williams
reiterating Du Font's opposition to
Argonne. Then the group considered
114
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
alternative sites. Williams warned that
a site other than Tennessee or Ar-
gonne would result in a further seri-
ous delay. Location at Hanford, for
example, would require too much
time, would very likely interfere with
construction of the production facili-
ties, and would place the installation
too far away from Wilmington and
Chicago. Finally, with Compton still
reluctant, the group agreed that the
semiworks should be built in
Tennessee.
The question of who would operate
the semiworks also came up for dis-
cussion at the Chicago meeting.
Taking advantage of Williams's pres-
ence, both Groves and Compton pro-
posed that Du Pont operate as well as
build the semiworks. But Williams,
pleading lack of authority, avoided
making a commitment.
The next opportunity for discussing
the semiworks problem came at a
conference on pile project policies,
held in Wilmington on 16 January.
General Groves was away on an in-
spection trip at the Hanford site, but
Colonel Nichols and Maj. Arthur V.
Peterson, the Chicago area engineer,
were on hand. Compton, accompa-
nied by Hilberry and Whitaker, came
determined to persuade Du Pont that,
as builder and operator of the main
production plant, it logically should
also perform both these functions for
the semiworks. But Williams, acting
again as spokesman for a strong Du
Pont delegation, had ready some ef-
fective counterarguments. In perfect-
ing any new technical process, he
pointed out, Du Pont always left op-
eration of the experimental plant
stage to the research staff. Further-
more, WiUiams continued, Du Pont
felt especially unqualified to operate
the semiworks because it involved
major processes entirely outside the
field of chemistry, the company's
normal area of specialization. Wil-
liams thus proposed that the Universi-
ty of Chicago operate the semiworks
and Du Pont furnish the university
with engineers, accountants, and simi-
lar personnel.
Compton obviously was profoundly
shocked by Williams's proposal. Nei-
ther in terms of its fundamental pur-
pose nor of its proper function, he
said, could a university operate an es-
sentially industrial enterprise at a lo-
cation some 500 miles from its
campus. The Du Pont representatives
countered with the observation that
the university would be performing at
least one appropriate function: edu-
cating company personnel in the spe-
cial art of making plutonium. Comp-
ton knew that the Army would prefer
not having Du Pont take on operation
of the semiworks because it believed
the firm's resources would be taxed
to the limit in building and operating
the plutonium production plant and
in carrying out its other war con-
tracts. He agreed to consult with
Conant in Washington, D.C., and
with the administration of the Univer-
sity of Chicago.
There can be little doubt that
Compton still held serious reserva-
tions on the task of operating the
semiworks. He was even more dubi-
ous that the University of Chicago ad-
ministration could be persuaded to
agree to the task. Conant gave him no
encouragement; the Harvard presi-
dent took a dim view of a university
running an industrial plant. Hence,
perhaps no one was more relieved
than Compton when the University of
ORGANIZING FOR PRODUCTION
115
Chicago agreed to accept a contract
for operation of the plutonium
semiworks. An exchange of letters be-
tween Groves and University of Chi-
cago President Robert Maynard
Hutchins in March 1943 provided the
necessary formal agreement for nego-
tiation of a War Department contract.
Hutchins, who happened to be absent
from the campus at the time the
actual decision was made, remarked
to Compton the next time he saw him
on the street: "I see, Arthur, that
while I was gone you doubled the size
of my university." ^^
For General Groves, successful res-
olution of the plutonium semiworks
problem was a major administrative
achievement. As the program devel-
oped, this accompHshment set the
standard for future cooperation be-
tween Du Pont and Compton's pluto-
nium research and development ac-
tivities— a key factor in working out
the far more complex problems of
building and operating the great plu-
tonium production works at Hanford.
Program Funding
As the size and complexity of the
atomic energy program increased, the
^® Quoted in Compton, Atomic Quest, pp. 172-74.
See also Dist Engr, Monthly Rpt on DSM Proj, 21
Jan 43, MDR. In his report the district engineer al-
ready refers to the University of Chicago as the "op-
erator" of the plutonium semiworks, more than six
weeks before the university had formally agreed to
take this responsibility. Other items pertinent to
negotiation of the semiworks operation contract are
Ltr, Conant to Compton, 4 Mar 43, OSRD; Ltrs,
Groves to Hutchins, 10 Mar 43, and Hutchins to
Groves, 16 Mar 43, Admin Files, Gen Corresp, 161,
MDR; MDH, Bk. 4, Vol. 2, Pt. 1, p. 2.3, and Ft. 2,
pp. 3.1-3.2, DASA; WD-Univ of Chicago Contract
W-7405-eng-39, 1 May 43, OROO, with pertinent
extracts found in Cert of Audit MDE 179-46, E. I.
du Pont de Nemours and Co., 30 Jun 46, Fiscal and
Audit Files, Cert of Audit (Sup), MDR.
Army had to face the problem of ad-
ditional funding. The decision to de-
velop four processes was obviously
going to cost a great deal more than
could be covered by the original fi-
nancial commitment. A few days after
Groves took command of the Manhat-
tan Project in September 1942, Colo-
nel Marshall discussed with him the
necessity for speed in appropriating
the remainder of the $85 million ear-
lier approved for the program. Only
$38 million had actually been allocat-
ed during the summer, and the rest
would soon be needed. Groves, how-
ever, did not take any immediate
action. In early November, Marshall
again raised this question but now re-
ported that future needs would total
around $400 milHon. Agreeing with
this estimate. Groves earmarked the
remainder of the $85 million for the
Manhattan Project and laid the
groundwork for a drastic increase in
its funding.
On 15 December, the Military
Policy Committee forwarded the $400
million estimate to the President, rec-
ommending that the necessary addi-
tional funds be made available early
in 1943. Also, the committee urged
that General Reybold, the Engineers
chief, be authorized to enter into con-
tractual obligations beyond the funds
then under his control, should obsta-
cles arise to prevent an early appro-
priation of additional money.
Roosevelt approved the commit-
tee's recommendations, and prepara-
tions were begun to secure the funds
confidentially within regular Army ap-
propriations. By April 1943, the need
for General Reybold to exercise his
authority to spend additional money
was clear. Some $50 million would be
116
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
required by the end of June and an
additional $286 million within an-
other six months. In late May, Gener-
al Somervell, the Army Service Forces
commander, ^"^ authorized Reybold to
make available to the Manhattan
Project $300 million from engineer
funds; however, by this time, an addi-
tional $400 million was needed to
carry the project through to the end
of 1944. This sum, too, was soon
made available under disguised pur-
poses in the Military Appropriations
Act of 1944. At least for the immedi-
ate future, it appeared fiscal require-
ments had been met. When the prob-
lem rose again in the following year,
new means would have to be devised
to solve it.^®
By spring of 1943, approximately
six months after General Groves's as-
signment to the Manhattan Project,
major advances in the atomic pro-
gram provided more promise than at
any time in the past of success in
^^ Initially called the Services of Supply (SOS),
the name was changed to Army Service Forces
(ASF) by WD GO 14, 12 Mar 43.
^^ Correspondence (Sep 42-May 43) on this sub-
ject filed in Admin Files, Gen Corresp, 110 (Appro-
priations), MDR. See also MPC Rpt, 15 Dec 42,
MDR; ibid, 12 Aug 43, Incl to Memo, Groves (for
MPC) to Chief of Staff, same date, OCG Files, Gen
Corresp, MP Files, Fldr 25, Tab E, MDR; MPC Min,
5 May 43, MDR; MDH, Bk. 1, Vol. 5, "Fiscal Proce-
dures," App. B2, DASA.
building an atomic bomb. These in-
cluded achievement of a self-sustain-
ing chain reaction in the pile method;
assurance of an adequate supply of
uranium ore; selection of plant sites
and work on their acquisition; letting
of contracts for construction and
plant operation; and appropriation of
requisite funding through 1944. Work
on the design of a bomb was pro-
gressing, bolstered by satisfactory
progress in the research and develop-
ment of methods to isolate a suffi-
cient quantity of U-235 and of the ap-
parent feasibility of obtaining and
using plutonium as a fissionable ex-
plosive. Project officials now believed
there was a good chance that the pro-
duction of bombs on a one-per-
month basis would begin in the first
half of 1945. By mid-1943, the Man-
hattan District had taken over admin-
istration of most of the OSRD re-
search contracts and was preparing to
assume responsibility for the rest in
short order. ^^ Now that the period of
joint Army-OSRD administration of
the program was coming to an end,
all work on the development of the
atomic bomb would continue under
the direction of the Army.
39 Dist Engr, Monthly Rpt on DSM Proj, 23 Apr-
24 May 43, MDR.
CHAPTER VI
The Electromagnetic Process
Considered from the viewpoint of
basic mihtary objectives, the single
most important problem of the Man-
hattan Project was how to produce
fissionable materials in the quantity
and of the quality required to make
an atomic bomb. By the end of 1942,
because project leaders were reason-
ably certain that a considerably great-
er amount of fissionable materials
than had been previously estimated
would be needed, the Military Policy
Committee decided to proceed with
full-scale development of three pro-
duction methods: for plutonium, the
pile process; for U-235, the gaseous
diffusion and electromagnetic proc-
esses. Of the three, project leaders
agreed that the electromagnetic
method most likely would be the first
to produce an appreciable quantity of
fissionable material, although not
nearly enough for an atomic weapon.
There remained, however, some
major reservations concerning the
feasibility of the electromagnetic
method as a large-scale production
process. In its recommendation that
the Army initiate construction of a
1 00-grams-per-day electromagnetic
plant, the S-1 Executive Committee
indicated that all contractual arrange-
ments should be drawn up so that
they could be readily canceled should
"subsequent developments warrant
... a change of plans." ^ Similarly,
following its fact-finding tour of the
project's research laboratories, the
Lewis reviewing committee reported:
"We do not see that the electromag-
netic method presents a practical so-
lution to the military problem at its
present capacity. . . ." ^ An electro-
magnetic plant capable of producing
1 kilogram of fissionable material per
day would require at least twenty-two
thousand separation tanks, whereas
the same output could be achieved by
a diffusion plant of only forty-six hun-
dred stages or three 250,000-kilowatt
plutonium piles. These figures im-
plied that an electromagnetic plant
would take longer to build, use up far
more scarce materials and manpower,
require more electrical power to op-
erate, and cost a much greater sum
than either a gaseous diffusion or plu-
tonium plant with equivalent produc-
tion capabilities.^
In spite of the drawbacks of the
electromagnetic method as a large-
» DSM Chronology, 13 Sep 42, Sec. 2(e), GROG.
2 Rpt of Lewis Reviewing Committee, in MPC
Rpt, 15 Dec 42. OCG Files, Gen Corresp, MP Files,
Fldr 25, Tab B, MDR.
^ Conclusions of Reviewing Committee, 4 Dec 42,
Admin Files, Gen Corresp, 334 (Special Reviewing
Committee), MDR.
118
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
scale industrial process, each of the
three committees concluded that the
method presented advantages which
outweighed its obvious defects. Based
on a proven laboratory tool, the mass
spectrograph, the electromagnetic
method was the most certain of the
processes to produce at least some
fissionable material, albeit not very ef-
ficiently. Also, a mass production
level could be more rapidly attained
because an electromagnetic plant
could be built in relatively small, self-
sufficient sections, each of which
could begin producing material as
soon as it was completed. Neither the
gaseous diffusion nor pile methods
had this advantage. Finally, too, Gen-
eral Groves and S-1 Chairman James
B. Conant, as well as several of the
other project leaders, perceived the
leadership of Ernest Lawrence as
giving a distinct advantage to the
electromagnetic process. The Univer-
sity of California scientist repeatedly
had demonstrated an ability to find
quick, practical solutions to even the
most difficult technical problems that
had arisen in development of the
process.*
Electromagnetic Research and the Army,
1942-1943
Only weeks after Colonel Marshall's
assignment as district engineer, the
Army began to take over administra-
tion of engineering, construction,
procurement, and related aspects of
the electromagnetic program, leaving
to the Office of Scientific Research
and Development (OSRD) continued
supervision of research and develop-
ment activities and fiscal and budget-
ary matters. In August, Marshall
opened the California Area Engineers
Office at Berkeley and assigned Maj.
Thomas T. Crenshaw as area engi-
neer and Capt. Harold. A. Fidler as
his assistant. Crenshaw soon estab-
lished himself in the university's
Donner Laboratory, adjacent to Law-
rence's office.^
During the fall and winter of 1942-
43, Major Crenshaw's office became
increasingly involved in procurement
of materials and equipment for the
research and development program
and with providing liaison between
the Berkeley program and other ele-
ments of the atomic project. In this
period, an important phase of the
staff's liaison function was arranging
visits to the Radiation Laboratory for
the various individuals and groups in-
volved in trying to decide what the
role of the electromagnetic process
should be.^
*MDH, Bk. 5, Vol. 2, "Research." pp. 1.6-1.8,
DASA; Groves, Now It Can Be Told, p. 96; Smyth
Report, pp. 145-46; Stone and Webster, A Report to
the People, p. 18.
5 MDH, Bk. 5, Vol. 2, pp. 2.1-2.2, DASA; Memo,
Crenshaw to Dist Engr, sub: Weekly Progress Rpt,
22 Aug 42, Admin Files, Gen Corresp, 001 (Mtgs),
MDR; Interv, Author with Fidler, 6 Jul 64, CMH.
^Subsection based on DSM Chronology, 13-14
Sep 42, Sec. 2(e), 11 Nov 42, Sec. 2(d), 14 Nov 42,
Sec. 2, OROO; Hewlett and Anderson, New World,
pp. 96, 112, 141-47, 157-58; Rpt, Capt Arthur V.
Peterson, sub: Visit to Berkeley Proj, 17 Oct 42,
Admm Files, Gen Corresp, 680.2 (Berkeley), MDR;
Groves Diary, 1-9 Nov 42, LRG; Rpt, sub: R & D at
Univ of Calif Rad Lab, 24 Apr 45 (prepared as Bk.
5, Vol. 2, of MDH), Figs. 6 and 7, SFOO; MDH, Bk.
5, Vol. 2, pp. 1.4, 3.9-3.10, 4.1-4.3, and Vol. 3,
"Design," pp. 2.6-2.10, 3.5-3.6, App. C6, DASA;
MPC Min, 10 Dec 42, OCG Files, Gen Corresp, MP
Files, Fldr 23, Tab A, MDR; Memo, Lawrence to
Fidler, 8 Mar 43, LRL. For a detailed discussion of
the electromagnetic process, see the appropriate
volumes in Division 1, Electromagnetic Separation
Project, of the National Nuclear Energy Series (see
Bibliographical Note).
THE ELECTROMAGNETIC PROCESS
119
These visitors came to learn first-
hand more about Lawrence's method
and how it was progressing. After
clearances by Crenshaw's staff and
the laboratory's security officials,
Lawrence and his technical staff
showed them the impressive physical
facilities and equipment. They toured
the conventional laboratories on the
university grounds and then the great
domed cyclotron building with its ad-
jacent shops and facilities located in
the hilly area east of the main
campus. There they observed the in-
tensive investigations under way into
the physics and chemistry of separat-
ing U-235 from ordinary uranium by
the electromagnetic method. Law-
rence had committed the largest part
of his staff and resources to the phys-
ics or physical aspects of the separa-
tion process, centering this research
in two buildings, one housing a 37-
inch magnet and the other a 184-inch
magnet. The availability of these cy-
clotron magnets, which were excep-
tional in size and strength, was the
single most important factor in
making possible research into the fea-
sibility of the electromagnetic method
as a production process. Research
into the chemical aspects of the sepa-
ration process under Lawrence's di-
rection was a much smaller program,
with laboratory investigations in
progress at both the Berkeley and
Davis campuses of the University of
California.'^
'' Not all research into the chemistry of the elec-
tromagnetic process was located at the University of
California, Berkeley. The OSRD also had contracted
with Brown, Purdue, and Johns Hopkins to investi-
gate some aspects. Subsequently, too, the electro-
magnetic production plant operator, the Tennessee
Eastman Corporation, carried on chemical research
for the process in Eastman Kodak laboratories in
Rochester, N.Y., and near the plant site in Oak
Lawrence and his scientist col-
leagues repeatedly emphasized to visi-
tors that their ultimate success or fail-
ure depended on development of the
calutron — a name derived from the
words California, university, and cyclo-
tron, ff they could redesign the calu-
tron, a novel hybridization of two
well-known laboratory tools — the
mass spectrograph and the cyclotron
magnet — so that it would operate not
only intermittently, as in the labor-
atory, but also on an around-the-
clock, day-after-day, month-after-
month basis without breakdown, then
they would have the means for pro-
ducing a significant amount of en-
riched uranium for an atomic weapon.
Lawrence had made some design
modifications in the first calutron, in-
stalled in the 37-inch magnet, follow-
ing successful experiments in Febru-
ary 1942. He found, however, that he
was unable to test the validity of these
changes until he had access to a more
powerful magnetic field. This became
available in the spring with comple-
tion of the 184-inch magnet. The re-
designed calutron became the proto-
type for the first production units at
the Tennessee plant. Mounted on a
metal door, this calutron could be
taken out of its vacuum tank as a
single unit, which greatly facilitated
recovery of any of the valuable urani-
um feed material adhering to compo-
nents and also expedited reloading
and maintenance.
At the same time, Lawrence's group
had also developed the essential
supporting components — magnet,
vacuum pumps, cooling systems, and
Ridge, Tenn. See MDH, Bk. 5, Vol. 2. pp. 1.1-1.2,
3.1,4.1, DASA.
120
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
electrical power and control equip-
ment. While these components were
more conventional in design and
function, they still had to be adapted
to conform to the requirements of the
electromagnetic process. The design
engineers, for example, decided that
the most efficient layout for the mag-
nets and tanks was in an oval-shaped
pattern, thus creating the racetrack
configuration that characterized each
major element of the production
plant. A special system of pumps
achieved and maintained the required
vacuum equivalent of one one-hun-
dred-millionth of normal atmospheric
pressure in hundreds of calutron
tanks.
Involving less space, fewer person-
nel, and mainly conventional proce-
dures, the chemical aspects of the
electromagnetic process must have
appeared far less important; neverthe-
less, both the first and final stages of
the process were essentially chemical
operations and required new tech-
niques and chemical substances about
which relatively little was known. For
the first stage the chemists had to de-
velop a method of large-scale produc-
tion of uranium tetrachloride, the
most promising feed material for the
calutrons. For the last stage they had
to devise an efficient method to ex-
tract the enriched uranium produced
by the calutrons and prepare it for
use by the Los Alamos Laboratory
scientists in developing an atomic
bomb. By early 1943, the chemists
had made substantial progress on
both the feed material and extraction
techniques.
Virtually all who visited the Radi-
ation Laboratory at Berkeley came
away impressed with the feasibility of
the electromagnetic research program
and with the eminently empirical
approach of Lawrence and his staff.
This approach, characterized by a
frequently demonstrated talent for
finding practical solutions to every
problem, inspired project leaders with
further confidence in Lawrence's
process as they prepared to transform
the research data and devices into an
industrial production plant at the
Tennessee site.
Research and Development, 1943-1945:
Radiation Laboratory
As the electromagnetic program
shifted from basic research to the
problems of designing, building, and
operating a major production plant,
the Army brought the project more
directly under its administrative juris-
diction. Replacing OSRD contracts
with War Department contracts was
an important step in attaining this
goal.
The University of California accept-
ed a letter contract from the district
engineer, effective 1 April 1943,
pending the working out of details of
a formal War Department contract.
Then on the sixteenth, representa-
tives of the Manhattan District,
OSRD, and the university's Board of
Regents reached final agreement on
terms of a new prime contract cover-
ing most aspects of the atomic re-
search program in progress at the Ra-
diation Laboratory. The new contract
went into effect on 1 May, bringing to
an end the OSRD's formal connection
with the California project. Hence-
forth, until the Army terminated con-
trol of the atomic energy program at
the end of 1946, this new agreement,
THE ELECTROMAGNETIC PROCESS
121
renewed annually, provided the con-
tractual basis for continuing the re-
search and development activities req-
uisite to construction and operation
of the electromagnetic plant in Ten-
nessee. In recognition of the overrid-
ing requirements of security, the re-
gents assented to leaving all details of
managing the program as they related
to the university to their secretary,
Robert M. Underbill, and to Law-
rence. Some subsequent modifica-
tions in the prime contract relating to
health and chemistry activities did not
result in major changes in the Radi-
ation Laboratory program, nor in the
Army's relationship to it.^
In general, fiscal arrangements re-
mained the same as they had been
under the OSRD contract, with one
significant exception. The War De-
partment contract provided that an
amount equal to 25 percent of the
total funds allotted for salaries and
wages could be used by the university
to defray its overhead expenses in op-
* Ltr Contract W-7405-eng-48, Marshall to Univ
of Calif, Attn: R. M. Underbill, 1 Apr 43, copy in
MDH, Bk. 5, Vol. 2, App. C3, also see pp. 2.1-2.3,
DASA; Historical Summary of Contract W-7405-
eng-48, May 43-Aug 47, comp. by Russell H. Ball,
Jan 48, witb significant correspondence on subcon-
stracts W-7405-eng 48A (health) and W-7405-eng
48B (chemistry) under Tab 6, pp. 35-49 and 50-60,
SFOO; NDRC and OSRD Contracts with Univ of
Calif, Jun 41-Sep 42, SFOO; Rpt, sub: R & D at
Univ of Calif Rad Lab, 24 Apr 45, pp. 19-28, SFOO;
Fidler Interv, 6 Jul 64, CMH. The Radiation Labo-
ratory health reseach program, directed by J. D.
Hamilton, functioned as a part of the project-wide
health program of the Manhattan District, which was
centered at the Metallurgical Laboratory in Chicago.
A chemistry program, directed by W. M. Latimer,
had grown out of the participation of the University
of California's chemistry department in the early
phases of atomic research at Berkeley. When the
OSRD contracts for these programs came up for re-
newal in June 1943, the Army continued them as
separate projects operating under the prime
contract.
erating the Radiation Laboratory; the
OSRD contract had provided 30 per-
cent for this purpose. Partly in reac-
tion to this reduction in overhead al-
lotment, in November 1943 business
representatives of the University of
California, University of Chicago, and
Columbia University requested the
Manhattan District to include a provi-
sion in prime contracts guaranteeing
the universities, in view of their non-
profit status, against a profit or loss
in administering atomic research pro-
grams. Following several months of
negotiation with the universities, the
District agreed in May 1944 that the
government would compensate them
if their overhead costs should exceed
their 25 percent allowance and, con-
versely, they would return to the gov-
ernment any surplus that might result
from this allowance.
At the same time, the District
added a provision in the prime con-
tracts with California, Chicago, and
Columbia for a so-called welfare fund.
Thus, in the case of California, the
government established a fund of
$500,000, which was to continue in
existence for a period of ten years
after termination of its contract with
the War Department. Any claims
made by Radiation Laboratory em-
ployees or their relatives during that
time because of death or disability re-
sulting from a specified list of unusual
hazards in atomic research activities —
for example, radioactivity, high vol-
tages, and movement of objects by
magnetic forces — would be paid from
this fund. The government provided
the money for the fund and the uni-
versity administered it with assistance
of a private insurance company. The
welfare fund took the place of the
122
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
OSRD's private indemnification insur-
ance, which the District had contin-
ued only until such time as a gov-
ernment-financed system could be
established.^
The Army's first major administra-
tive task after the formal contract
became effective was to supervise
preparation of the program's fiscal
year (FY) 1944 budget. As of mid-1943,
cost of the program had reached about
$500,000 a month, and was following
an upward trend. District and univer-
sity officials agreed upon a request for
$7.5 million (an average of $625,000
per month) for FY 1944. By November,
however. Regents Secretary Underbill
was warning Captain Fidler, who had
replaced Major Crenshaw as area engi-
neer, that even this increased sum was
not likely to be enough to meet mush-
rooming costs. Underbill estimated
that the university would need an addi-
tional $1.5 to $2 million in the remain-
ing months of FY 1944. Consequently,
the District approved a supplementary
appropriation, bringing total cost to
$9.5 million.
The Army's negotiations with the
University of California for the FY
1944 budget set the pattern for sub-
sequent years. Even after the electro-
magnetic production plant began op-
erations in the spring of 1944, the
electromagnetic research program
continued to require a large staff to
solve production problems and make
improvements in plant operations.
Thus, for the FY 1945 budget, the
Army scheduled $8.5 million, al-
though only $6.5 million was actually
expended. By the time the war ended
in August 1945, total outlay for the
electromagnetic research program
had reached about $20 million — some
$3.7 million under OSRD con-
tracts before 1 May 1943 and the
remainder under the War Department
contract. ^°
Increases in cost reflected the very
rapid expansion of the Radiation Lab-
oratory, both in terms of personnel
and physical facilities. In May 1943,
when the Army assumed full responsi-
bility for the research program, the
laboratory was occupying a number of
buildings in two different locations on
the Berkeley campus. Starting out
modestly in 1941 in the prewar Radi-
ation Laboratory building, atomic re-
search activities gradually had spread
into four adjacent structures, includ-
ing the new Donner Laboratory, and,
by mid- 1942, to the new 184-inch-
cyclotron building in Berkeley Hills.
Soon the circular-shaped cyclotron
building, standing on the slope of a
hill some 900 feet above the campus
proper, was ringed with smaller addi-
tional structures housing a machine
shop, chemistry laboratories, ware-
houses, and other facilities essential
to operating and testing calutrons
and other equipment prototypes de-
signed for the production plant in
9 Rpt, sub: R & D at Univ of Calif Rad Lab, 24
Apr 45, pp. 24-27, SFOO; MDH, Bk. 5, Vol. 2, p.
2.3, DASA; Ltr, Underbill lo Nichols, 13 Mar 44,
Tab 6, Historical Summary of Contract W-7405-
eng-48, SFOO; Ltr and Incl, Nicbols to Lawrence,
15 Apr 44, Tab 9, ibid.
10 Rpt, Underbill, sub: Hist of Contract W-7405-
eng-48, [probably 1948], Tab 1; Ltr, Underbill to
Fidler. 10 Nov 43, Tab 5b; Ltr, Fidler to Underbill,
16 Feb 44, Tab 5e; Memo, Fidler to Dist Engr, sub:
Contract W-7405-eng-48, 18 Feb 44, Tab 5d;
Memo, Priestly to O. Lundberg, sub: Budgets for
1944-45 for Projs 48, 48A and 48B, 29 Jun 44, Tab
7; Ltr, Nichols to Univ of Calif Regents, Attn: Un-
derbill. 20 Mar 45, Tab 8a. All in Historical Summa-
ry of Contract W-7405-eng-48, SFOO. See also
Ltr, Lawrence to Nichols, 24 Mar 44, Admin Files,
Gen Corresp, 001 (Mtgs), MDR.
THE ELECTROMAGNETIC PROCESS
123
Tennessee. Part of the chemistry pro-
gram, too, had overflowed facihties
on the Berkeley campus and been
moved to the University of Califor-
nia's School of Agriculture at Davis.
For each new structure or renova-
ton, Lawrence and his staff laid out
preliminary plans and estimates,
which went to the area engineer's
office for approval and checking. De-
tailed supervision of construction was
left to Radiation Laboratory business
manager Kenneth Priestly. To expe-
dite the work and minimize security
problems. Priestly let contracts to the
local firms that the university had em-
ployed extensively in the past. For the
same reasons, most contracts were of
the fixed-fee or lump-sum type. By
mid- 1945, Priestly had allocated for
various types of construction more
than $300,000 from funds allotted
under the University of California's
War Department contract. ^^
By far, the largest expenditures
were for salaries and wages of the re-
search staff and for the laboratory
equipment and materials they needed.
Annual payroll costs were running at
a level of nearly $3 million in May
1943, when the Army assumed full
control of the Manhattan Project, and
had reached a high point of about
$3.7 million a year later. Equipment
and other expenses, although some-
what less than personnel, attained a
*^ Constr Completion Rpt, Univ of Calif Rad Lab,
sub: Contract W-7405-eng-48, 1 May 43-1 Aug 46,
comp. by Calif Area Engrs Office, 1 Sep 46, SFOO
(with maps of the two campus areas where major
laboratory facilities were located and with selected
photographs of important buildings); Rpt, W. B.
Reynolds (Rad Lab Man Engr), sub: Notes on 184-
inch Cyclotron, 16Jun 45, SPOO; "Domed Building
Fitted to Research Needs," Engineering News-Record, 9
Apr 42, pp. 64-66; MDH, Bk. 5, Vol. 2. pp. 2.7-2.8,
DASA.
maximum of nearly $300,000 a month
in November 1943. ^^
Starting in 1941 with personnel of
the University of California's Radi-
ation Laboratory, which Lawrence
had been building up since the
1930's, the staff at Berkeley grew rap-
idly. By May 1943, as primary empha-
sis began to shift from basic research
to engineering and developmental
problems and training of operational
personnel for the Tennessee plant, it
numbered almost nine hundred scien-
tists, technicians, engineers, mechan-
ics, clerks, skilled workers, and others.
By mid- 1944, there were nearly
twelve hundred on the Radiation Lab-
oratory payroll, and total employment
remained well above one thousand
until the end of the war.^^
The basic organization of the Radi-
ation Laboratory had taken shape
under Lawrence's guidance in the
years immediately preceding the out-
break of World War II and con-
formed, more or less, to the conven-
tional pattern for peacetime academic
research programs, with a major divi-
sion into research and administrative
staffs. While Lawrence, as director,
theoretically exercised equal control
over both divisions, he devoted his
energies to the research staff, delegat-
ing to the OSRD and then the Army
the administration of nonscientific ac-
tivities. Major responsibilities for
these activities devolved upon Cap-
tain Fidler, the area engineer. Fidler
worked closely with Regents Secretary
Underbill, and also with Priestly who.
12 Chart, Proj 48 Expenses Estimated by Months
to Nearest $5,000, in MDH, Bk. 5, Vol. 2, App. Bl 1,
DASA.
13 Chart, Lab Personnel by Months (UCRL), in
MDH, Bk. 5, Vol. 2, App. B2, DASA.
124
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
as the laboratory's business manager,
supervised administration of finances
and personnel. ^^
In providing personnel, security,
and other administrative services for
the research staff, the area engineer
dealt with teams of scientists and
technicians organized along function-
al lines under three broad areas of in-
vestigation. The physics division, by
far the largest, worked on the experi-
mental calutrons, vacuum problems,
mechanical and electrical design, reas-
sembly of equipment, and fundamen-
tal physical research. The chemistry
division, much smaller, investigated
problems of preparing feed material
for the calutrons and recovery and
purification of their output of U-235
and ordinary uranium. The biological
group constituted a subsidiary ele-
ment of the Manhattan District's med-
ical research program that had its
headquarters at the Metallurgical Lab-
oratory in Chicago. The area engi-
neer provided its director with admin-
istrative support in coordinating the
activities of his group with Lawrence's
program, based upon primary guid-
ance from the Chicago medical scien-
tists. The Army was helpful, too, in
assisting the laboratory in recruitment
and maintenance of a staff of several
** Paragraphs on the Radiation Laboratory based
on Rpt, Peterson, sub: Visit to Berkeley Proj, 17 Oct
42, Admin Files, Gen Corresp, 680.2 (Berkeley),
MDR; Directory of Personnel, MD and Univ of Calif
Personnel of R & D Group, 20 May 43, SFOO; Rpt,
sub: R & D at Univ of Calif Rad Lab, 24 Apr 45, pp.
30-46, SFOO; MDH, Bk. 5, Vol. 2, pp. 5.2-5.4, and
Vol. 3, pp. 5.1-5.3 and App. B5 (Org Chart, Univ of
Calif Lab Proj), DASA; Interv, Author with Reyn-
olds, 6 Jul 64, CMH; Visitors Permits [Rad Lab],
Oct 43 through 1946, Visitors Info File, SFOO;
Fidler Interv, 6 Jul 64, CMH; Min, Coordination
Committee Mtgs, Oct 42-Mar 44, Admin Files, Gen
Corresp, 337 (Mtgs and Confs-Univ of Calif), MDR;
Hewlett and Anderson, New World, p. 150.
hundred technicians and skilled work-
men, who supported the work of the
scientists and engineers.
Adding to the complexity of admin-
istering the Radiation Laboratory
were the periodic influxes of scien-
tific, engineering, and other technical
delegations not only from the major
American contractors but also those
from abroad. Such firms as the Stone
and Webster Engineering Corpora-
tion, Westinghouse Electric and Man-
ufacturing Company, and especially
the Tennessee Eastman Corporation
sent their personnel to Berkeley to
assist in plant development, or for
orientation and training in the elec-
tromagnetic process. And in Novem-
ber 1943, Australian physicist Marcus
L. E. Oliphant, who had played a sig-
nificant role in the development of
radar, and thirty of the British scien-
tists who had come to the United
States to aid in the atomic project
were assigned to the laboratory —
some until the end of the war — to
work on various aspects of electro-
magnetic research.
The arrival and processing of each
of these groups presented special
problems to the area engineer in se-
curity and safety, to the laboratory
business manager in personnel and fi-
nance, and to the laboratory director
in program and staff coordination.
These problems were further multi-
plied and magnified by their high
turnover rate, the result of the
project's need for scientific expertise
at other facilities. As early as 1943,
the Army had begun to send many of
the contractors' specialists to the
Clinton Works to assist Tennessee
Eastman in preparing to operate the
electromagnetic plant. The area engi-
THE ELECTROMAGNETIC PROCESS
125
ncer's staff facilitated their transfer,
eventually permanently reassigning a
sizable number. Again, in September
1944, the staff oversaw the move of
one-third of the British scientists to
the Tennessee site.
For the most part, the area engi-
neer's staff was not directly involved
in the many meetings of committee
and group leaders who planned
research, assessed the results of ex-
perimental work, and advised on reas-
signment of technical and scientific
personnel. But the area engineer and
other Manhattan representatives did
participate in one key group, the Co-
ordination Committee. Business and
scientific leaders of the laboratory
and representatives of the major con-
tracting firms attended the weekly
meetings of this committee, which
Lawrence had established to ensure
coordination of effort between his
program and the many outside orga-
nizations collaborating on design and
construction of the electromagnetic
production plant. After each session
Captain Fidler, who had extensive
training and experience in both engi-
neering and science, prepared a writ-
ten report of the entire proceedings
to keep General Groves, and other
District personnel, up to date on the
progress of research and development
activities at Berkeley. Whenever
Groves visited the laboratory, usually
once a month during the crucial
period from October 1942 to Novem-
ber 1943, Lawrence convened the
weekly committee meeting to coincide
with the commander's itinerary. Feel-
ing that the meetings provided an ex-
cellent means of communication with
the key members of the laboratory
staff, Groves took an active role in the
free-for-all discussions of electromag-
netic problems.
The area engineer's staff also car-
ried on a number of other activities,
most of them of a routine character.
It took part in the negotiation and in-
terpretation of contracts and the
review of fiscal plans and policies; as-
sisted in those aspects of personnel
administration involving military
problems, especially the obtaining of
deferments for key scientific and tech-
nical employees; expedited procure-
ment of equipment and materials,
particularly those in scarce supply;
and supervised the more ordinary as-
pects of security. For example, to
avoid any possibility of revealing the
connection of the University of Cali-
fornia with the Army and the atomic
project, Groves always conducted his
inspections of the laboratory in civil-
ian clothes. When he arrived at the
San Francisco airport, Fidler met
Groves clandestinely and whisked him
off to his own house so that the gen-
eral could change from military into
civilian attire before going to the
university.
Even the remarkably smooth course
of the collaboration between the Uni-
versity of California, Berkeley, and
the Manhattan District — a testimony
to the success of Captain Fidler's liai-
son efforts, Groves's strenuous en-
deavors to keep himself fully in-
formed, and Lawrence's exceptional
administrative capabilities — on occa-
sion was punctuated with a few prob-
lems, primarily because the university
administration had to accept Manhat-
tan's substantial requirements largely
on faith for reasons of security. In
mid-January 1943, sensing a disrup-
tion to normal university activities.
126
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
William J. Norton, the university busi-
ness manager, complained to Groves
in no uncertain terms: "To date I
have not seen the scratch of a pen —
one written word setting forth the
suggestions or directives of the gov-
ernment representatives in regard to
the conduct of the Radiation Labora-
tories on the Berkeley campus. . . ."
Noting that he was aware that in the
past half year several Army officers,
including Groves, had visited the
campus, Norton continued that "in-
variably, after one of these visits, . . .
[my] office is deluged with requests
by numerous persons for more office
space, laboratory space, entire build-
ings, shops, more guards, more of
this and that — all in the name of the
General or the colonel, or the captain
who has just visited the various
plants. But for some reason I am
never in on the discussions at the
start." Norton then assured Groves
that he wished to have the project run
smoothly, an objective that could be
much more easily achieved, he said, if
the general would only let him know
the importance of the project and
who on the campus officially repre-
sented the Manhattan District. ^^
Groves wrote to University of CaH-
fornia President Robert G. Sproul,
carefully explaining the reasons for
the secrecy of the project and for the
complicated and sometimes confusing
relationships that existed between the
Army, the university, and the con-
tracting firms. He then outlined brief-
ly the anticipated requirements for
further space in university buildings.
"Captain Fidler has been instructed,"
he stated, "to keep you [President
Sproul] fully informed ... at all
times" concerning the physical needs
of the project. ^^ Groves also had re-
quested that the War Department ex-
plain to Sproul the importance of the
work in progress at the Radiation
Laboratory. "[Its] energetic prosecu-
tion . . . ," Secretary of War Stimson
wrote, "is a vital military necessity,
for it is one of the foundation stones
of an extremely important, probably
the most important, development
project in our war activities." ^'
Not all basic research for the elec-
tromagnetic process was done under
the University of California contract.
In June 1943, District representatives
arranged with Tennessee Eastman to
carry out research on certain aspects
of process chemistry, using laboratory
facilities (leased from Eastman Kodak)
in Rochester, New York, and at the
plant site in Tennessee. Cost of these
research contracts, as well as those
for process improvement in 1944 with
Johns Hopkins and Purdue Universi-
ties, were small by comparison with
the expenditures at the University of
California, totaling considerably less
than $2 million. ^«
Design and Engineering, 1943-1945
At its 25 June 1942 meeting, the
S-1 Executive Committee decided
that Stone and Webster would have
primary responsibility for basic design
and engineering of both buildings
'5 Ltr, Norton to Groves, 14 Jan 43, Admin Files,
Gen Corresp, 161 (Univ of Calif). MDR.
'«Ltr, Groves to Sproul, 27 Jan 43, Tab 2, Histor-
ical Summary of Contract W-7405-eng-48, SFOO.
*'Ltrs, Stimson to Sproul, 27 Jan 43, and Groves
to Fidler, 8 Feb 43, Tab 2, Historical Summary of
Contract W-7405-eng-48, SFOO.
'«MDH, Bk. 5, Vol. 2, pp. 1.1, 2.5-2.10, Apps.
B4, B6-B9, B12-B15, DASA; Hewlett and Ander-
son, New World, p. 158.
THE ELECTROMAGNETIC PROCESS
Table 1 — Stone and Webster Engineering and Design Personnel
127
Date
At Boston
At Berkeley
In the
Field"
Total
1 January 1943
1 July 1943
1 January 1944
1 July 1944
1 January 1945
1 July 1945
' Clinton and elsewhere.
Source: MDH. Bk. 5. Vol. 3, "Design," p. 3.52
239
738
743
685
463
338
277
770
789
772
520
381
and equipment at the Tennessee
site.^^ For security, the company
formed a separate design organiza-
tion, which by mid- 1944 had nearly
750 employees occupying thirteen
floors in four buildings in Boston
and, in addition, a subordinate unit at
the Berkeley campus and a liaison
office at the Tennessee site {Table 1).
To monitor the Stone and Webster
design group, the district engineer es-
tablished in August 1942 the Boston
Area Engineers Office and assigned
Maj. Benjamin K. Hough, Jr., to head
a relatively small staff. From the be-
ginning, one of Major Hough's most
important responsibilities was to
ensure that the Stone and Webster
design group functioned under maxi-
mum security conditions. The special
group thus worked separately from
other company employees, and over-
all knowledge of the electromagnetic
project was limited to a few key offi-
cials and to August C. Klein, the com-
pany's chief mechanical engineer and
newly appointed project engineer for
the electromagnetic plant. The area
engineer's staff also assisted the com-
pany in developing special security
control measures in distribution of
thousands of drawings to General
Electric, Westinghouse, and other
firms providing equipment and mate-
rials. The designs reflected the em-
phasis on security and speed in every
phase of development. Wherever fea-
sible. Stone and Webster designers
planned to use standard items of
equipment and customary methods of
construction, primarily to save time.
There was, however, a limit to the
extent that standardization would be
possible because of the special char-
acter of the processes; the need for
exceptionally close tolerances and
performance capabilities; and, as
proven by experience, inevitable
changes in equipment design.^®
'^In addition to the main production facilities.
Stone and Webster also designed most of the elec-
tromagnetic plant auxiliary, service, and support fa-
cilities— including experimental racetracks to tram
plant operators, shops, steam plants, a foundry,
warehouses, cafeterias, and community utilities.
20 Cert of Audit MDE 177-46, Boston Area,
26 Apr 46, Fiscal and Audit Files, Cert of Audit
Registers. MDR; Org Charts. I'.S. Engrs Office,
MD, 15 Aug 43, 28 Aug and 10 Nov 44, Admin
Files, Gen Corresp, 020 (MED-Org), MDR; List of
Continued
128
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
By the turn of the year, Lawrence
and his staff at the Radiation Labora-
tory had made significant progress
not only in their electromagnetic re-
search but also in the areas of prelim-
inary design and engineering of plant
facilities, the results of which they for-
warded to Stone and Webster. But
before design of the plant could pro-
ceed very far, company engineers
needed answers to two important
questions: How rich in U-235 must
the final product be and would a
single-stage electromagnetic plant
achieve that degree of enrichment?
On 4 January 1943, Oppenheimer
furnished Lawrence with a tentative
answer. The goal, he wrote Lawrence,
must be near-perfect separation, that
is, production of practically pure U-
235 as the final product. Any lesser
enrichment, Oppenheimer believed,
would require such a large amount of
the very heavy uranium that its weight
would make it unacceptable for a
weapon. 2^ The degree of enrichment
possible with a single-stage plant was
not definitely known, but it would not
be enough to meet such stringent
standards. A second-stage facility
might take uranium processed in the
original 500-tank plant and bring it to
the required higher degree of
enrichment.
Key Personnel, MD Area OfFices (ca. Nov 44),
Admin Files, Gen Corresp, 231.001 (LC), MDR;
MDH. Bk. 5, Vol. 3, pp. 3.51-3.52, DASA; Tables
(Employment by MD on Design, Research and
Constr as of 31 May, 31 Jul, and 31 Oct 43) in Rpt,
sub: MD Proj Data as of 1 Jun 43 (most items as of
1 Jun 43, but tables appear to have been added at
later date). Admin Files, Gen Corresp, 600.12 (Projs
and Prgms), MDR; Completion Rpt, Stone and
Webster, sub: Clinton Engr Works, Contract W-
7401-eng-13, 1946, p. 143, OROO.
2* I.tr, Oppenheimer to Lawrence, 4 Jan 43,
Admin Files, Gen Corresp, 201 (Lawrence), MDR.
At the Coordination Committee
meeting in early February, Lawrence
expressed the view that design of the
second-stage might reasonably be de-
layed for another two months, pend-
ing receipt of data on the degree of
enrichment attained in the experi-
mental XA calutrons nearing comple-
tion at Berkeley. If this data indicated
eventual achievement of 70- to 80-
percent enrichment, no second stage
would be necessary. Groves dis-
agreed. There always had been the
possibility that the electromagnetic
process would be coordinated with
some other isotopic separation proc-
ess (he probably had in mind the gas-
eous diffusion plant), and he believed
the second-stage facility would be
necessary either as a supplement to
the first stage of the electromagnetic
plant or as part of a plant for enhanc-
ing the slightly enriched product from
another plant.
As Groves departed from Berkeley
on 14 February, he urged that prompt
decision should be reached on the
Beta process, as it now came to be
called to distinguish it from the first
stage, or Alpha process. The Radi-
ation Laboratory staff had convinced
him that the Beta tanks could prob-
ably be designed to make maximum
use of Alpha-type equipment, but he
needed further assurance from Stone
and Webster that a second stage
would not delay completion of the
first stage.
General Groves and Colonel Mar-
shall conferred with Stone and Web-
ster on 17 March. Marshall took the
initiative in securing a firm agreement
that the first five Alpha racetracks at
the Clinton Engineer Works (CEW)
would be identical in design and
THE ELECTROMAGNETIC PROCESS
129
equipment, to guarantee their com-
pletion at the earliest possible date.
When the company assured Groves
that Beta construction would not
delay the Alpha units, he gave his ap-
proval for the second stage. ^^
By late spring, design development
for both stages was in full swing. The
Berkeley, CHnton, and Boston design
staffs worked under constant pressure
from Groves and other project lead-
ers to produce thousands of blue-
prints for five Alpha and two Beta
racetracks. The emphasis on speed
took its toll. Frequently, General
Electric, Westinghouse, and the other
firms manufacturing components for
the racetracks had to incorporate es-
sential design changes after equip-
ment was fabricated and installed,
and inevitably some equipment fail-
ures occurred. Everyone connected
with the electromagnetic project soon
realized design, redesign, and process
improvement would continue long
after the first major units of the plant
began production operations. ^^
^^ Min, Coordination Committee Mtgs, 3 and 13
Feb 43, MDR; Excerpt from Memo, M. P. O'Brien
(Rad Lab Ex Engr) to Fidler, 14 Feb 46, quoted in
par. Id of Memo, Fidler to Groves, sub: Initiation of
Work on Y-12 Beta Process, 22 Oct 46, Admin
Files, Gen Corresp, 319.1, MDR; Hewlett and An-
derson, New World, pp. 151-52.
2^ This and following paragraphs on electromag-
netic design based on MDH, Bk. 5, Vols. 2-3,
DASA; Hewlett and Anderson, New World, pp. 149-
67; Ltr, Lawrence to Groves, 14 Jun 43, Admin
Files, Gen Corresp, 440.17 (Mfg-Prod-Fab), MDR;
Lawrence to Groves, 3 Aug 43, Admin Files, Gen
Corresp, 095 (TEC LC), MDR; Memo, Maj Wilbur
E. Kelley (Y-12 Opns Div chief, CEW) to Lt Col E.
H. Marsden (Ex Off, MD), sub: Summary of Y-12
Proj as of 9 Aug 43, same date. Admin F'iles, Gen
Corresp, Misc File, MDR; Min, Coordination Com-
mittee Mtgs, 2, 9, 30 Sep and 17 Nov 43, MDR;
MPC Min, 13 Aug 43, MDR; Rpt, sub: R & D at
Univ at Calif Rad Lab, 24 Apr 45, pp. 17 and 23,
SFOO; Dist Engr, Monthly Rpts on DSM Proj, Sep
By summer, with most blueprints
for Alpha I completed and procure-
ment contracts for plant equipment
arranged. Groves approved design
changes in the fifth Alpha I racetrack.
In September, he authorized con-
struction of Alpha II, comprised of
four additional racetracks incorporat-
ing the improved design (a step rec-
ommended earlier by the Military
Policy Committee). He also approved
two more Beta racetracks, to process
the additional output from Alpha II.
Thanks to experience gained on the
Alpha racetracks, design of the Beta
racetracks posed fewer problems.
Beta chemical equipment, however,
was quite a different story, because of
the small quantities of material under-
going processing and the fantastically
high value of U-235. To prevent even
a minimum loss of output, the design-
ers made the equipment as small as
possible and used corrosion-resistant
materials and special devices to recov-
er the last traces of U-235.
With the start of plant construction,
continuing design activities assumed a
secondary role. Lawrence and his col-
leagues continued to propose innova-
tions and design alterations in the
racetracks, but General Groves con-
sistently followed a policy of approv-
ing only changes that clearly would
speed up progress. Hence, Radiation
Laboratory scientists, in 1944 and
1945, were relegated largely to the
role of consultants to Stone and Web-
ster, Tennessee Eastman, and the
other contractors, assisting them to
improve design and operation of the
existing plant facilities.
and Nov 43, OCG Files, Gen Corresp, MP Files,
Fldr 28, Tab A, MDR.
130
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Building the Electromagnetic Plant
Actual construction began in Febru-
ary 1943 on a tract of 825 acres locat-
ed in Bear Creek Valley, some dis-
tance southwest of the rapidly grow-
ing community of Oak Ridge (Map 3).
Project engineers had selected this
location because they hoped the
wooded ridges paralleling the valley
would limit possible lethal effects of a
major explosion or similar accident.
There was more than ample room be-
tween ridges to permit adequate spac-
ing of the numerous plant facilities
that, at the height of plant operations,
would include nine main process
buildings and some two hundred aux-
iliary structures, comprising nearly 80
acres of floor space. ^'^
Construction Procurement
Stone and Webster had primary re-
sponsibility for procuring the materi-
als, equipment, and field construction
force needed for building the produc-
tion plant; however, the Army had di-
rected that the firm consult regularly
with the Radiation Laboratory and
with the major manufacturing con-
tractors in carrying out materials and
equipment procurement. ^^ Both
Stone and Webster and Manhattan of-
ficials had agreed that, because of the
special nature of much of the equip-
ment required for the electromagnetic
process, only the leading manufactur-
ing firms in the electrical equipment
field were likely to have the resources
and capabiHties necessary to supply it.
Consequently, in early 1943 Stone
and Webster, with considerable assist-
ance from District officials, negotiated
subcontracts with General Electric,
Westinghouse, Allis-Chalmers, and
several smaller firms to design and
manufacture such items as regulators,
rectifiers, calutron tanks, diffusion
pumps, magnet coils, and vacuum
valves that would meet the project's
high standards for workmanship and
performance and, at the same time,
comply with its stringent procurement
deadlines. 2^
As Stone and Webster negotiated
contracts, it also developed an elabo-
rate purchasing organization at its
Boston office. This organization
worked closely with the Boston Area
Engineers Office and, through a pro-
curement unit established at the Ten-
nessee site, with the CEW Construc-
tion Division. In addition to the 150
persons employed in Boston and
Tennessee, Stone and Webster main-
tained another 250 representatives in
the field at contractor plants and in
major industrial areas. These field
workers checked equipment for con-
formity to specifications, expedited
deliveries, and assisted in locating
scarce materials for subcontractors.
Stone and Webster's procurement or-
ganization also worked closely with
the Washington Liaison Office, espe-
cially in obtaining critical materials,
^* A detailed discussion of most aspects of elec-
tromagnetic plant construction may be found in
MDH, Bk. 5, Vol. 5, "Construction," DASA.
^* A detailed discussion of the procurement of
manpower for the electromagnetic project appears
in Ch. XVI.
26 Subsection based on MDH, Bk. 5, Vol. 2, pp.
3.3, 3.9, 4.6, Vol. 3, pp. 4.1 and 4.3-4.24, and Vol.
5, pp. 6.1-6.2, DASA; Completion Rpt, Stone and
Webster, sub: CEW, Contract W-7401-eng-13,
1946, pp. 19, 21-23, 146-48, OROO; Org Charts,
U.S. Engrs Office, MD, 15 Aug and 1 Nov 43, MDR;
Fine and Remington, Corps of Engineers: Construction,
p. 678; Min, Coordination Committee Mtgs, 23 Dec
42 and 23 Jan, 6 and 13 Feb, 29 Apr, 21 Oct 43,
MDR.
MAP 3
132
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
on which it achieved an excellent
record of placing most orders within
a few days of construction authoriza-
tion. Maj. Wilbur E. Kelley, a young
engineer from Indiana who was re-
sponsible for overseeing electromag-
netic activities for the Manhattan Dis-
trict, and Lt. Col. Warren George,
head of the CEW Construction Divi-
sion, also kept a watchful eye on pro-
curement. (5^^ Chart 2. )
The sheer quantity and variety of
materials and equipment that rolled
in by the trainload over a recently
built spur track to the construction
site taxed the monitoring capabilities
of the CEW Construction Division.
Starting in the spring of 1943, the
builders of the plant moved into the
site more than 2,157 carloads of elec-
trical equipment; 1,219 of heavy
equipment; 5,389 of lumber; 1,407 of
pipe and fittings; 1,188 of steel; 257
of valves of all sizes; and 1 1 of weld-
ing electrodes. The Construction Di-
vision was responsible for seeing that
all of this material was brought to the
site as nearly on schedule as possible.
If items arrived early, the division had
to help find storage space — not
always an easy task because of limited
warehousing facilities.
Because parts and machinery could
not be fabricated on schedules that
dovetailed precisely with construction
progress, much had to be accepted as
the manufacturers were able to turn it
out. Those items that arrived ahead
of schedule had to be closely guard-
ed; protected from dirt, corrosion,
and other kinds of damage; and care-
fully inventoried so that they would
be immediately available as needed.
Chemical equipment posed problems
because of special manufacturing and
handling requirements, and the
equipment often arrived late or just
barely on time.
Schedules had to be adapted to
last-minute changes in design and to
many uncertainties. Discouragingly
few items were commercially avail-
able. Tanks, magnets, vacuum pumps,
cubicles, and most of the chemical
equipment, for example, were either
completely new in design or so much
larger or so much greater in capacity
that nothing of the kind previously
had been manufactured. Many less
obvious items also carried perform-
ance specifications that far exceeded
anything ever attempted on a com-
mercial scale. For instance, the calu-
trons required electrical cable that
could carry a high-voltage load con-
tinuously. The only commercial prod-
uct that came near meeting this speci-
fication was the heaviest X-ray cable,
and it was designed to operate inter-
mittently. Even when the commercial
equipment could be used, suppliers
often had to add to their productive
capacity or build entire new plants to
furnish the items required in the
enormous quantities they were
needed. Thus, in the first equipping
of the racetracks some eighty-five
thousand vacuum tubes were re-
quired. In the case of one type of
tube, procurement officials ordered in
advance the entire national output for
1943 as well as that from a plant still
under construction. In the early
months of plant operation, when
tubes burned out faster than predict-
ed, some feared the racetracks might
prove inoperable simply through in-
ability to maintain the tube supply.
New methods had to be developed
for machining and shaping the graph-
ite in those parts of the calutron sub-
THE ELECTROMAGNETIC PROCESS
133
ject to intense heat. No standard ma-
terial would endure the high poten-
tials, mechanical strain, and tempera-
ture changes to which bushings in the
high-voltage elements in the sources
were continuously subjected. After
months of investigation, Stone and
Webster found an insulator made of
zirconium oxide, a new and still very
expensive substance. Similarly, use of
large quantities of liquid nitrogen to
condense moisture created a demand
for a substance hitherto not produced
on a commercial scale anywhere in
the country.
Nowhere were Manhattan District
personnel more spectacularly in-
volved in procurement than in the
project's need for vast amounts of
silver. ^^ Because copper was in great
demand for all kinds of wartime uses
and because silver could serve as a
substitute in electrical equipment.
Colonel Marshall in the summer of
1942 had detailed Nichols to negotiate
an agreement with the Treasury for
withdrawal of silver from the United
States Bullion Depository in West
Point, New York.
District officials arranged to have
the silver processed through the De-
fense Plant Corporation, which was
conducting a silver program of its
own in connection with other war in-
dustries. The silver, in 1,000-ounce
bars, was moved by guarded truck to
^■' Paragraphs on silver procurement based on
MDH. Bk. 5. Vol. 4, "Silver Program," DASA. For
details on Nichols's role in the silver negotiations,
see Ch. III. Groves presents a good, brief account in
his own book Xow It Can Be Told, pp. 107-09. Dis-
trict officials had to account for and protect nearlv
one-third billion dollars of silver ultimately with-
drawn from the Treasury for the use in the electro-
magnetic plant.
Carteret, New Jersey, where it was
cast into billets, and then to Bayway,
New Jersey, where it was extruded
into strips %'s of an inch thick, 3
inches wide, and 40 to 50 feet long.
From Bayway, under the protection of
Manhattan District guards, the coiled
strips were moved by rail freight to
the Allis-Chalmers plant in Milwau-
kee. There, some 258 carloads of
silver were fabricated into coils and
bus bars, then sealed into welded cas-
ings, and finally shipped on open, un-
guarded flatcars, by various routes
and on irregular schedules, to the
Clinton Works.
A central control section in the
New York Area Engineers Office ad-
ministered the silver program, but as
a double check the District retained
the services of a firm of auditors and
a metallurgical concern. Some precau-
tions taken to avoid unnecessary loss
included weighing the silver each
time it entered or left one of the
plants, storing the pieces in stacks
that would permit minimum handling
during each eight-hour accountability
check, and painstakingly collecting
the scrap — even the minute amounts
that might accumulate on a worker's
clothing or shoe soles. ^®
2* When the time came to return the silver to the
Treasurv after the war was over, Manhattan District
workmen disassembled and cleaned part by part the
machines where it had been used, dismantled the
furnaces in which it had been melted, and even took
up the burned wooden floors to recover every trace
possible. As a result, in the final accounting, less
than one thirty-six-thousandth of 1 percent of the
more than 14.700 tons borrowed by the District for
the atomic project was missing, most of which was
an unavoidable melt loss. See MDH, Bk. 5, Vol. 4,
pp. 4.1-4.5, DASA; Groves, Xow It Can Be Told. p.
109; Hewlett and Anderson, .V^i World, p. 153.
134
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Playit Construction
As work crews began excavating
building sites and laying foundations
early in the summer of 1943, Stone
and Webster foremen knew plant con-
struction must move ahead with maxi-
mum speed during the prime summer
building season, to meet the extreme-
ly short deadlines projected by the
Army. Reluctantly, Stone and Web-
ster officials agreed to have the first
Alpha racetrack building ready to turn
over to Tennessee Eastman, the plant
operator, by November and the re-
maining Alpha units at approximately
monthly intervals thereafter. Project
leaders were convinced that only ad-
herence to this rigorous schedule
would produce sufficient fissionable
materials to fulfill the requirements
for design and fabrication of an
atomic weapon in time to affect the
outcome of the war.
Stone and Webster had little diffi-
culty in maintaining force-draft con-
struction schedules for the plant
buildings, mainly designed along the
lines of structures in common use by
industry. The only unexpected delay
was the discovery of unfavorable sub-
soil conditions; excavation crews thus
had to do some extra blasting and
mucking and laying of 6-foot-thick
concrete mats to ensure firm founda-
tions for the enormously heavy elec-
tromagnetic machines. Through use
of more thorough soil-sampling tech-
niques, Stone and Webster was able
to minimize the time lost in providing
adequate footings for the later race-
track buildings.
Internal construction of the plant,
however, was characterized by uncon-
ventional methods and unorthodox
problems that seemed certain to
cause delays and setbacks in working
schedules. Project leaders had antici-
pated some problems. They knew, for
example, that installing equipment
while the building shells were under
construction was likely to lead to
complications because riggers, pipe
fitters, and mechanics were not ordi-
narily accustomed to working elbow
to elbow with concrete pourers, form
builders, and other building construc-
tion workers. Also, security measures
and the need to maintain extreme
cleanliness in certain areas would re-
quire guards and a pass system to
limit access to some parts of the
buildings. And they well understood
that assembling the complex racetrack
and other production units involved
demanding and time-consuming
measures. ^^
Consequently, Manhattan District
officials were pleasantly surprised
when Colonel Nichols, who had re-
placed Marshall as district engineer,
reported to General Groves in
September that the electromagnetic
construction was about 34 percent
completed, including the turnover to
Tennessee Eastman of the first oper-
ational facilities. These were the two
tanks and three magnet coils of the
XAX development plant with auxiliary
supporting units to be used for train-
ing production plant workers. At the
same time. Colonel Nichols noted
that construction on the crucial main
Alpha equipment was no more than a
few weeks behind the ambitious
schedules set up by Groves earlier in
the year. Stone and Webster engi-
neers had reported to him that they
29MDH, Bk. 5. Vol. 5, pp. 3.1 and 3.9-3.10,
DASA.
THE ELECTROMAGNETIC PROCESS
135
Excavation of Typical Rocky Substratum at the Tennessee Site
expected the first Alpha racetrack to
be operational by 1 December 1943.
The only disquieting note in Nichols's
optimistic September estimate was
mention of discovery of some "bugs"
when the XAX tanks underwent their
initial test operation. ^°
Partly on the basis of this impres-
sive progress, General Groves author-
ized start of work on four of the im-
proved Alpha Il-type racetracks and
two additional Beta units in Septem-
ber. Stone and Webster organized a
whole new field force and the district
engineer reorganized the CEW Con-
struction Division, enlarging its per-
sonnel and establishing separate con-
30 Dist Engr, Monthly Rpt on DSM Proj, Sep 43,
MDR, MDH, Bk. 5, Vol. 5, p. 3.16 and .App. Dll
(Chart. Employees on Stone and Webster's Payroll).
DASA; Memo, Kellev to Marsden, sub: Summary of
V-12 Proj as of 9 Aug 43, same date, MDR.
struction divisions to monitor the
three major building projects in
progress at the Tennessee site: the
electromagnetic, gaseous diffusion,
and plutonium semiworks facilities.
Colonel George continued as head of
the newly formed Electromagnetic
Construction Division, but with addi-
tional officers assigned to branches to
monitor Stone and Webster's nine
construction subunits and a special
expediting section. Thus, as Stone
and Webster's engineers prepared to
carry out a test run of the nearly com-
pleted Alpha I unit, District officials
were confident that the electromag-
netic project was well on the way to
successful completion. Had they taken
more careful note of the "bugs" that
persisted in the XAX calutron test op-
erations, they might have been better
136
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
prepared for setbacks the project was
to suffer in the months ahead. ^^
The first of the unanticipated prob-
lems with the newly completed Alpha
I racetrack was reported to Colonel
Nichols in early November. A few
days after they had started test runs,
plant engineers discovered that the
14-ton calutron tanks, which stood
back to back between the coils, had
moved apart as much as 3 inches,
causing a tremendous strain on the
piping used to maintain a vacuum in
the tanks. After investigation they de-
termined that the powerful magnetic
field set up in the racetrack had cre-
ated such a force between the tanks
that they "walked" away from each
other when they were jarred, as
during installation or removal of a
door. Following a few days study of
the phenomenon. Stone and Webster
reported that the adverse effects of
the magnetic field could be overcome
by installing heavy steel tie straps to
hold the tanks firmly in place. ^^
No such simple solution was possi-
ble, however, for the second major
problem that the November test oper-
ations revealed. The symptoms were
intermittent electrical shorts with
wide fluctuations in magnetic field
strength as successive magnet coils
were energized. Colonel Nichols re-
ported the problem to General
Groves in early December, by which
time the complete failure of several
coils seemed to threaten the whole
future of the process. Plant engineers
indicated that dirt in the oil coolant
inside the coils was probably the
major cause of the malfunction and
the only sure cure was to drain the oil
and dry out the coils. Very much
upset by the ominous developments,
the Manhattan commander directed
Nichols to take all measures neces-
sary, pending his own arrival at the
site to discuss such other steps as
might be required, including "a reor-
ganization of personnel in charge of
the Y-12 [electromagnetic] construc-
tion work so that similar occurrences
[would] be avoided in the future." ^^
Groves arrived at the Clinton
Works on 14 December for a hurried
two-day inspection visit. On hand al-
ready were project engineer August
Klein from Stone and Webster and a
team of experts from Allis-Chalmers,
where the unsatisfactory coils had
been manufactured. Their further
checking. Groves learned, had re-
vealed that the trouble stemmed not
only from mill scale and rust in the
cooling oil but also from moisture in
the cloth and fiberboard insulation,
and too close winding of wire. Groves
set in motion a thorough reorganiza-
tion of the Clinton electromagnetic
administrative team and reemphasized
his earlier directive to Lawrence that
he concentrate Radiation Laboratory
resources on finding a solution for
the defects in the racetrack
equipment.^'*
3>Org Charts, U.S. Engrs Office, MD, 15 Aug
and 1 Nov 43, MDR; MDH, Bk. 5, Vol. 5, pp. 6.1-
6.4 and Apps. D7 and DIO, DASA.
^^Min, Coordination Committee Mtg, 11 Nov 43,
MDR; Dist Engr, Monthly Rpt on DSM Proj, Nov-
Dec 43, MDR.
"Msgs. Nichols to Groves and reply. 6 Dec 43,
Admin Files, Gen Corresp. 412.41 (Motors), MDR.
^''Msg, Nichols to Groves (at Hanford), 6 Dec 43;
Msg, Lt Col Thomas T. Crenshaw (Ex Off, CEW) to
Groves, [probably 7 or 8 Dec 43]; Memo, Peterson
to Groves, 9 Dec 43. All in Admin Files, Gen Cor-
resp, 412.41 (Motors), MDR. MDH, Bk. 5, Vol. 5,
pp. 3.10-3.11, DASA. Groves Diary, 14-15 Dec 43,
LRG.
THE ELECTROMAGNETIC PROCESS
137
Alpha I Racetrack, Electromagnetic Plant, CEW
A new administrative hierarchy re-
sulted from the reorganization of the
eletromagnetic team, which took
effect in January 1944. Lt. Col. John
S. Hodgson, who had considerable
experience as a civilian contractor, re-
placed Colonel George as chief of the
Electromagnetic Construction Divi-
sion; Maj. William A. Bonnett moved
up from a position as a liaison officer
with Stone and Webster field units to
be Hodgson's assistant; and Maj.
Walter J. Williams, who had had as-
signments on a number of ordnance
plant construction projects, took over
responsibility for completion of the
original electromagnetic plant. Only
Maj. Mark C. Fox, who had served as
area engineer on other Corps of En-
gineers projects, continued in his re-
cently assigned task of overseeing
construction of extensions to the
original electromagnetic plant. At the
same time. Stone and Webster
brought in Frank R. Creedon from
the synthetic rubber progam to be
general manager of all the company's
operations at the Clinton Works.
Creedon had had an earlier associa-
tion with General Groves, having
worked as a civilian employee of the
Army's Construction Division on ord-
nance projects before 1942.
The first big task facing the new
team was how to solve the technical
defects in the Alpha I electrical equip-
ment. Project technicians decided the
only sure remedy was to return the
malfunctioning magnet coils to Allis-
Chalmers' Milwaukee plant for clean-
ing and rewinding, as well as to have
equipment crews disassemble and
138
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
clean all oil lines in the racetrack
building. It took about three months
to complete these corrective meas-
ures, and thus the first Alpha I race-
track was not hilly operative again
until early March 1944.^^
With the distressing days of techni-
cal problems in the past, by spring
the somber mood of Manhattan and
Stone and Webster officials concern-
ing the electromagnetic method had
dissipated, and they were enjoying a
revived sense of optimism. One argu-
ment in favor of the process had been
that the production plant could be
built in segments which would
become operational as soon as they
were completed, making possible the
early detection of defects and the ad-
dition of indicated improvements.
And now, because the trying experi-
ences of Stone and Webster engi-
neers with the first Alpha I racetrack
had enhanced their understanding of
the problems and the reasons for
them, they were able to make changes
in equipment handling and installa-
tion techniques for subsequent race-
tracks. On the second Alpha I race-
track, for example, the engineers in-
troduced much more rigid standards
of cleanliness, including such meas-
ures as drying out pipe lines by circu-
lating preheated oil through them
and adding filters for each coil.^^
»^Org Chart, U.S. Engrs OfTice, MD, 15 Feb 44,
MDR; MDH, Bk. 5, Vol. 5, pp. 3.10-3.11 and 6.1,
DASA; Fine and Remington, Corps of Engineers: Con-
struction, pp. 684-86; Groves, \ow It Can be Told, p.
102 and 427; Dist Engr, Monthly Rpt on DSM Proj,
Mar 44, MDR.
'«MDH. Bk. 5, Vol. 5, pp. 3.11, DASA; Memo, E.
W. SeckendorfT (Y-12 Process Engr) to T. R.
Thornburg (Gen Supt, V'-12, Stone and Webster),
sub: Detailed Method ot Cleaning and Altering Pipe
at Racetrack B-Bldg 9201-1, CEW, Area V-12, 30
Dec 43, Incl to Memo, Crenshaw to Groves, 1 Jan
Initial failure of Alpha I also reaf-
firmed a cardinal principle of General
Groves's administrative policy for the
atomic project. For months, the Man-
hattan commander had been empha-
sizing that the major resources and
personnel at the atomic research lab-
oratories should be concentrated on
the single objective of securing pro-
duction of militarily significant
amounts of fissionable materials in
time to be of use during the war. On
more than one occasion during his
visits to the Radiation Laboratory in
the fall of 1943, Groves had reminded
Lawrence's scientific staff that the
Army was not interested in advancing
pure science. Their mission, he
stated, once the research and devel-
opment for the production plant was
completed, was to support in what-
ever way was necessary the design,
construction, and operation of that
plant. The natural tendency of the
Radiation Laboratory scientists was to
resist limiting themselves solely to so-
called debugging activities for the
Tennessee plant, but the crisis caused
by Alpha I's failure forced Lawrence
to push new research entirely into the
background and, in December, to
completely redefine laboratory prior-
ities in terms of two objectives: in-
creasing the output and efficiency of
the electromagnetic plant; and devel-
oping new ideas, methods, and engi-
neering designs for expanding that
plant. ^"^
44. Admm Files, Gen Corresp, 337 (Kellex LC),
MDR.
^^ Min, Coordination Committee Mtg, 17 Nov 43,
MDR; Dist Engr, Monthly Rpt on DSM Proj, Nov-
Dec 43 and Feb 44, MDR; Ltr, Lawrence to Nichols,
22 Mar 44. MDR.
THE ELECTROMAGNETIC PROCESS
139
The Army's prompt administrative
measures to counter the adverse con-
sequences of Alpha I's failure proved
to be highly effective. The engineers
were successful in making the second
Alpha I operational by the end of Jan-
uary 1944, the first Beta and the first
and third Alpha I in March, and the
fourth Alpha I in April. Impressed
with the rapid progress being
achieved, Colonel Nichols reported to
Groves that he was now convinced
that the prediction given to President
Roosevelt in December 1942 — com-
pletion of an atomic weapon by early
1945 — would be realized if persisting
manpower shortages could be
overcome.^®
Meanwhile, Stone and Webster had
been moving ahead with construction
of other major elements of the elec-
tromagnetic plant. Construction time
for building the extension units — the
Alpha II racetracks — was far less in
comparison to that required for
Alpha I. The Stone and Webster
crews' rapid progress was in part due
to certain design modifications, such
as using cement asbestos brick for the
outer siding of buildings and making
the racetrack shape rectangular rather
than oval. Also, the experience gained
on Alpha I expedited installation of
equipment in Alpha II. The first race-
track in the extension plant began op-
erating in July 1944 and all four were
ready for operation by 1 October. ^^
At the same time. Stone and Web-
ster and its subcontractors construct-
ed the Beta units, where the Alpha-
^^ Disi Kngr, Monthly Rpts on DSM Proj, Jan and
Mar 44, MDR, Rpt, Nichols, sub: Info for Groves, 8
Apr 44, OCX; Files, Gen Corresp, MP Files, Fldr 28,
Tab A, MDR.
39MDH, Bk. 5, Vol. 5, pp. 3.17-3.20, 3.22, 5.2,
DASA.
processed material would be further
enriched, and built the facilities for
chemical preparation and recovery for
both Alpha and Beta plants. In spite
of several changes in plans, resulting
in considerable expansion of the Beta
and chemical facilities, the Electro-
magnetic Construction Division kept
the work on or even ahead of sched-
ule, avoiding delays in processing ma-
terial from the Alpha plants. From
original plans in 1943 for only a
single Beta unit to process Alpha I
output, the number grew to four: one
for Alpha II; another to handle addi-
tional output from Alphas I and II
that resulted from using partially en-
riched feed material from the gaseous
diffusion plant; and still another in
1945 so that there would be enough
Beta facilities to process enriched ma-
terial coming directly from the diffu-
sion plants. Similarly, each expansion
of the Alpha and Beta units required
an increase in the number of chemical
and other processing facilities, giving
the division additional work in expe-
diting procurement, monitoring revi-
sion in contracts, and inspecting com-
pleted construction. This continuing
high-level of construction activity oc-
casioned Colonel Hodgson to reorga-
nize his division in late 1944 and to
establish five separate branches
(structures, electrical, expediting,
process piping, and mechanical). Not
until early 1945, when the Military
Policy Committee decided that the in-
dicated successful operation of the
gaseous diffusion and plutonium
plants would make further large-scale
expansion of electromagnetic produc-
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Electromagnetic Plant Under Construction
tion facilities unnecessary, did the di-
vision's workload ease significantly. ^°
Plant Operation
Terms of the June 1943 contract
for operation of the electromagnetic
*°Ibid.. pp. 3.13-3.15, 3.20-3.23, App. D6 (Tab-
ulation of Bldg Statistics), DASA; Dist Engr, Month-
ly Rpts on DSM Proj, Oct 43 and Aug and Nov 44,
MDR; MPC Min, 10 May 44 and 25 Feb 45, MDR;
Completion Rpts, Stone and Webster, sub: CEW,
Contract W-7401-eng-13, 1946, pp. 49-50, and
Contract W-14-108-eng-60, 1946, pp. 6-8, OROO;
Rpt, W. M. Brobeck and W B. Reynolds, sub: On
Future Development of Electromagnetic System of
Tube Alloys Isotope Separation, 15 Jan 45, OCG
Files, Gen Corresp, Groves Files, Fldr 10, MDR.
plant provided that Tennessee East-
man operate it on a cost-plus-fixed-
fee basis, serve as a consultant on
plant design, obtain and train operat-
ing personnel, and carry on research
to improve the process and its prod-
uct. For performing these services,
the government agreed to pay the
firm a basic operating fee of $22,500
each month plus $7,500 for each
racetrack up to seven and $4,000 for
each one over that number.*^
"» WD Contract W-7401-eng-23, 7 Jun 43, with
supps., OROO; MDH, Bk, 5, Vol. 6. "Operation,"
pp. 2.2-2.5 and 3.1-3.5, DASA.
THE ELECTROMAGNETIC PROCESS
141
Preparations
In early 1943, when Tennessee
Eastman initiated preliminary oper-
ational activities at the Tennessee site
and at the Berkeley and Rochester re-
search facilities, the district engineer
formed a CEW Division in the New
York office and assigned Major Kelley
as division chief to supervise electro-
magnetic operations. Kelley's division
not only monitored the contractor's
activities relating to administration,
chemical processes, electrical process-
es and plants, and special accounts
but also established liaison with its
Berkeley and Boston administrative
units that coordinated with the Radi-
ation Laboratory and Stone and Web-
ster. Tennessee Eastman's Boston
staff, however, moved to the Tennes-
see site in August, in keeping with the
firm's frequently expressed desire to
center its plant operations activities
there. *2
During construction Major Kelley
and his operating unit staff were busy
assisting Tennessee Eastman in re-
cruiting and training personnel to op-
erate the Alpha, Beta, and chemical
process equipment. Early estimates of
the number of employees needed
were far too low and requirements
were repeatedly revised upward. Al-
though recruiting was carried on in
all sections of the country through re-
*^ Subsection based on Org Chart, U.S. Engrs
Office, MD, 1 Nov 43, MDR, MDH, Bk. 5, Vol. 5,
Sec. 3, and Vol. 6, pp. 3.3-3.5 and 8.1-8.3, DASA;
Min, Coordination Committee Mtgs, 23 Jan, 6 Mar,
and 24 Jun 43, MDR; Dist Engr, Monthly Rpts on
DSM Proj, Sep 43 and Mar 44, MDR; Min, Special
Progress Mtg, 5 Aug 43, Admin Files, Gen Corresp,
337 (Mtgs and Confs-Univ of Calif), MDR; Hewlett
and Anderson, S'eu< World, p. 162; Rpt, F. T.
Howard, sub: The DSM Proj, Synthetic Catalyst Diy,
22 Apr 43, OCG Files, Gen Corresp, MP Files, Fldr
28, Tab A, MDR.
gional offices of the United States
Employment Service, the best results
were attained in Knoxville and vicini-
ty. For the many jobs requiring tech-
nical knowledge and background, the
electromagnetic project had to resort
to procurement through military
channels. Many of the scientifically
trained personnel in the Manhattan
District's Special Engineer Detach-
ment (SED) at the Clinton Works
were assigned to work in the plant,
reaching a total of 450 SED enlisted
personnel by August 1945. The Dis-
trict also assisted in the temporary as-
signment of technically trained Navy
officers to the plant in 1944, their
number reaching a maximum of 143
in July of that year.*^
Tennessee Eastman made a major
effort to develop a training program
for the thousands of operators who
would be required when the plant was
ready for full-scale operation. Work-
ing closely with Radiation Laboratory
scientists, the firm's Berkeley staff laid
the groundwork for systematic train-
ing of workers and supervisory per-
sonnel. While many practiced with
the Alpha experimental equipment at
Berkeley, others went to the Univer-
sity of California's Davis campus to
learn chemical processing techniques.
Radiation Laboratory scientists and
Manhattan District representatives
carefully reviewed all training materi-
al, the latter group giving special
attention to the security problem.
Tennessee Eastman technicians delib-
erately compiled the training material
to give the would-be operator only
the information needed to perform
*^ For a more detailed account of manpower re-
cruitment, and the SED's formation and organiza-
tion, see Ch. XVI.
142
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
the job, without reveaHng the true
character or purpose of the end prod-
uct. Experimentation demonstrated
that trainees with prehminary orienta-
tion in the nature of the electromag-
netic process made the most rapid
progress. Meanwhile, by September
1943, intensive recruiting efforts by
the company had resulted in the
hiring of some eighteen hundred op-
erator trainees, most of them from
the Knoxville area.
Some preliminary instruction took
place in facilities of the University of
Tennessee, because the large-scale
training program at the plant site did
not start until early fall. By that time
hundreds of trainees were on hand to
begin training on two experimental
XAX electromagnetic production
tanks that had started operating in
the development plant. Tennessee
Eastman moved all but a few of its
personnel from Berkeley to the Ten-
nessee site to participate in training
the twenty-five hundred operators
deemed necessary for the five Alpha I
racetracks. With the addition of the
Alpha II and Beta buildings, the train-
ee program expanded to provide sev-
eral times that many operators. By
early 1944, Tennessee Eastman's pay-
roll had increased to ten thousand
and by mid- 1945 it would rise to
more than twenty-five thousand.
The typical operator trainee was a
woman, recently graduated from a
nearby Tennessee high school, with
no scientific training whatsoever.
Using one of the XAX electromagnet-
ic tanks in the development plant, the
instructional staff taught her how to
operate complex control panels in the
calutron cubicles adjacent to the race-
tracks. They gave her only informa-
tion essential to her task as an opera-
tor and, for security reasons, actually
mislead her as to the real purpose
and character of the product. The
training program was surprisingly
successful, supplying operators on
schedule for each Alpha and Beta
racetrack as it went into operation.
Production Activities
Starting up in late 1943, the elec-
tromagnetic chemical units eventually
were producing thousands of pounds
of the charge material necessary for
the production operation of the race-
tracks. The first really effective pro-
duction of the U-235-enriched final
product came in late January, when
the second Alpha I racetrack began
operating. In the five-month period
following, as the remaining three
Alpha I and the first two Beta tracks
became fully operational, production
steadily increased. And by mid- 1944,
the Army could view the electromag-
netic start-up operations as, in the
main, successful.'*'*
Manhattan District officials, howev-
er, were unprepared for the almost
continuous problems that arose as the
electromagnetic plant moved into the
sustained production phase of its op-
eration. One mechanical or equip-
ment failure after another plagued
plant operations; short circuits and
shortages, breakdowns and breakages
cropped up on all sides. In spite of
the best efforts of Tennessee Eastman
and District procurement officials, the
spare parts situation skirted the edge
of chaos for months. Lack of experi-
ence, of standardization, and of a suf-
""MDH, Bk. 5, Vol. 6, pp. 4.2 and 4.4-4.5,
DASA; Dist Engr, Monthly Rpts on DSM Proj, Jan-
Jun 44, passim, MDR.
THE ELECTROMAGNETIC PROCESS
143
CEW Training Facilities (background ), where electromagnetic plant employees received
preliminary instruction. District headquarters buildings are in the foreground.
ficicnt number of suppliers all con-
tributed to the severe parts procure-
ment difficulties. Nevertheless, the
District's electromagnetic staff and
Tennessee Eastman — working in close
coordination — managed sufficiently to
overcome the adverse effects of these
many problems so that in March 1944
plant workers shipped the first of sev-
eral hundred grams of Alpha product,
containing 13 to 15 percent U-235, to
Los Alamos. Three months later the
first shipment of the much more
highly enriched Beta product reached
the New Mexico laboratory.*^
But Manhattan and Tennessee
Eastman officials were well aware that
this output of sample quantities rep-
resented only the first steps in bring-
*s MDH, Bk. 5, Vol. 6, pp. 4.2 and 4.4-4.5,
DASA; Memo, J. C. White (Gen Mgr, Tenn East) to
Groves, 28 Jun 44, Admin Files, Gen Corresp, 095
(TEC), MDR.
ing the electromagnetic plant up to a
maximum rate of production, a com-
plicated undertaking with pitfalls at
every turn.*^ They readily perceived
that part of the difficulty was inherent
in the basic nature of the process that
used large complex machines and sig-
nificant quantities of electric power
and raw materials to isolate an infin-
itesmally small amount of final prod-
uct. The basic feed material, orange-
colored uranium oxide shipped in
from refineries operating under direc-
tion of Manhattan's Madison Square
Area Engineers Office, moved
through a series of very complex
steps. A chemical preparation process
converted it into a gaseous form, ura-
nium tetrachloride, which plant work-
*® Paragraphs on electromagnetic plant oper-
ations based primarily on MDH, Bk. 5, Vol. 6, Sec.
4, DASA.
144
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
ers then fed into the Alpha racetracks.
Here part of the feed material sepa-
rated, while the rest adhered to vari-
ous parts of the interior of the calu-
tron, where it had to be recovered for
recycle. The separated portion went
to the Beta chemical preparation
stage and then into the Beta race-
tracks for further separation. That
separated portion emerged as U-235
final product and, after concentration,
workers shipped it to the Los Alamos
Laboratory. The rest had to be re-
covered, recycled through the Beta
racetracks, and concentrated for
shipment.
Only 1 in 5,825 parts of charge ma-
terial fed into the Alpha racetracks
emerged as final product; 90 percent
of the charge material was left in the
feed bottles or scattered around the
tanks. Of the 10 percent that passed
into the ion beams, only a very small
quantity entered the receivers. The
amount reaching the receivers was
limited by the capacity of the calu-
trons. It could not be increased
except through use of enriched
charge material, or by construction of
more racetracks. Furthermore, the
amount actually recovered from the
receivers, because of its minute quan-
tity and the essentially violent nature
of the process, could not be made to
reach 100 percent even by the most
practicable methods.
Because of the high intrinsic value
of the final product, recovery had to
be as complete and thorough as pos-
sible, yet with no undue holdup time
in the chemical apparatus to slow
down the process. The Beta chemistry
facilities included a salvage depart-
ment which used batteries of extrac-
tors, reactors, filters, centrifuges,
evaporators, and driers so that the
very last traces of enriched uranium
might be recovered. Justification for
these intensive efforts was demon-
strated when worn-out carbon receiv-
er parts from the calutrons were
burned. They yielded enough en-
riched uranium to raise the January
1945 production a full 10 percent.*"^
Even under the best of conditions,
a small amount of U-235-enriched
product always remained in solutions,
or bound in solids, or adhered to
costly and scarce equipment parts;
however, it was economically unfeasi-
ble for this material to be recovered.
A certain percentage also remained in
that part of the uranium feed matter
which passed through the ion beam
but did not enter the receivers. It was
imperative that this material — consti-
tuting nine-tenths of the uranium fed
into the Alpha calutrons and seven-
eighths of that going into the Beta
racetracks — be prevented from con-
taminating the enriched uranium and
be recovered and stored for possible
future reprocessing. To keep losses at
a minimum and to prevent theft, Ten-
nessee Eastman instituted a strict ma-
terial accounting system. Stock room
employees inventoried the Alpha
stocks every four weeks, the Beta
every two weeks. In spite of this care-
ful check, surprisingly large amounts
of material (17.4 percent of Alpha
product by September 1945 and 5.4
percent of Beta product by December
1946) were lost unavoidably in the
various kinds of wastes created by the
separation process itself.*®
*'' Memo, Kelley to Groves, sub: Present Status of
Beta Chemistry Opns, 8 Sep 44, Admin Files, Gen
Corresp, 600.1 (Constr CEW), MDR; Hewlett and
Anderson, Xew World, pp. 295-96.
^^ Data concerning losses of feed materials and
recovery problems is derived from MDH, Bk. 5, Vol.
Continued
THE ELECTROMAGNETIC PROCESS
145
The most crucial phase of the re-
covery operation took place in Beta
chemistry. Alpha workers moved the
final Alpha product, stored in receiver
pockets on the removable doors of
the Alpha calutrons, to the Beta
chemistry buildings. After dismantling
the pockets. Beta workers first
scraped, bleached, and burned the
graphite parts and then leached and
electrostripped the metal parts. Final-
ly, chemists processed the resulting
solutions and solids to extract all en-
riched uranium. They then purified
this enriched uranium and converted
it into Beta feed material.
The Beta preparatory chemical
process proved to be one of the most
persistently troublesome operations
in the electromagnetic plant. The
process was slow, requiring, even
under optimum conditions, about
three weeks. More worrisome, howev-
er, only about 60 percent of the en-
riched uranium brought from Alpha
was showing up as an end product of
the Beta chemical process, causing a
serious shortage of feed material for
the Beta racetracks. In July 1944,
Groves himself went to the Clinton
Works to discuss the problem with
plant and District officials. As a result,
Tennessee Eastman temporarily shut
down all Beta production in August
so that company engineers and out-
side consultants could thoroughly
analyze the process and equipment.
Their investigations revealed that the
trouble lay in the overly complex
piping and equipment and in the
tendency of certain materials in this
equipment to absorb too much
uranium.
6, pp. 4.16-4.17 and App. C (with illustrations),
DAS A.
District and Tennessee Eastman of-
ficials immediately instituted changes
in equipment, techniques, and organi-
zation to overcome these weaknesses
in Beta chemistry. Project engineers
set about removing, cleaning, and re-
designing piping; replaced glass-lined
tubes with pyrex; put in more parts
made of graphite from which ab-
sorbed uranium could be recovered
by burning; and made other changes
to speed up the process. For varying
periods during the fall of 1944, ex-
perts like Frank H. Spedding, the
metallurgist who headed Manhattan's
research program at Iowa State Col-
lege, and John P. Baxter, one of the
British scientists assisting in the bomb
development program, came to the
Clinton Works to study Beta chemis-
try with an eye to improving tech-
niques employed in the process. And,
in December, District officials negoti-
ated contracts with Johns Hopkins
and Purdue Universities to study
methods for increasing recovery and
reducing holdup time in the Beta
process. Tennessee Eastman, now
more fully aware of the chemical diffi-
culties of isotopic separation, com-
pletely reorganized its Clinton chem-
istry division and greatly increased
the number of personnel.
In spite of the difficulties with Beta
chemistry operations, in January 1945
the district engineer reported to the
Manhattan commander that there had
been a dramatic increase in Beta pro-
duction during the second half of
1944, with output being about 60
percent greater at the close of De-
cember. This increase was attributa-
ble primarily to the much higher pro-
ductive capacity of Alpha II calutrons,
and the fact that all Alpha II's were
146
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
fully operational by November. Con-
sequently, Beta output in November
was more than ten times the July rate,
increasing even more in December to
twice the November rate. The Alpha
II's, however, were far from trouble-
free. The major problem experienced
had to do with the insulators burning
out at a high rate, but the engineers
quickly corrected this defect by rec-
ommending that zircon be substituted
for the less durable material in the
bushings. ^^
Not all of the production problems
of the electromagnetic project were
mechanical or technical in nature.
When the spare parts crisis occurred
in June 1944, Groves looked into
project management by Tennessee
Eastman and District officials. Follow-
ing a visit to the plant, he wrote to
Conant that he had observed a
number of ways in which he thought
production might be increased. Su-
pervisors ought to make more fre-
quent inspections, especially in instal-
lation and servicing of calutrons.
More should be done to build up and
maintain employee morale. Lack of
sufficient organization charts and the
presence of "too many people" in the
operating rooms gave Groves the im-
pression that the plant managers were
not making the most efficient use of
personnel. Also, he wondered if Fred-
erick R. Conklin, the Tennessee East-
man works manager, and Major
Kelley, chief of the District's Electro-
magnetic Operations Division, were
*^ Memos for File, Kelley, sub: Notes on 3 and 14
Jul Confs, 4 and 15 Jul 44, Admin Files, Gen Cor-
resp, 337 (LC), MDR; Memo, Kelley to Groves, sub:
Present Status of Beta Chemistry Opns, 8 Sep 44,
MDR; Dist Engr, Monthly Rpts on DSM Proj, Jul
44-Jan 45, passim, MDR; Hewlett and Anderson,
Xeu' World, pp. 295-96; MDH, Bk. 5, Vol. 6, pp. 4.9-
4.10 and 5.3, DASA.
"too similar in disposition," noting
that neither Conklin nor Kelley was a
"hard driving, optimistic executive.
Instead of setting an impossible goal
and then breaking their hearts to
almost achieve it, they set a nice,
comfortable goal making plenty of al-
lowances for difficulties and then feel
very proud of themselves for having
been proven right in their pessimistic
outlook." ^°
General Groves took no immediate
steps to institute major changes in
management. He could not overlook
the fact that Major Kelley got along
extremely well with the key executives
of Tennessee Eastman and also was
held in very high regard by Lawrence
and the staff of the Radiation Labora-
tory. It was not until September, with
the spare parts problem partially re-
lieved and the Beta chemistry bottle-
neck on the way to solution, that the
Manhattan commander directed the
district engineer to replace Kelley.
Colonel Nichols selected Lt. Col.
John R. Ruhoff, a chemical engineer
by profession, because of his familiar-
ity with electromagnetic problems; he
had been assistant chief of the Dis-
trict's Materials Section and, since
1943, chief of the Madison Square
Area Engineers Office where he was
responsible for overseeing the provi-
sion of feed materials for the electro-
magnetic process. In early 1945,
Ruhoff assumed responsibility for
overseeing all electromagnetic activi-
ties at the Clinton Works and contin-
ued in that post until the end of the
war. Major Kelley did not leave the
^° Ltr, Groves to Conant, 5 Jun 44, Admin Files,
Gen Corresp, 400.17 (Mfg-Prod-Fab), MDR; Ltr,
White to Groves, 28 Jun 44, Admin Files, Gen Cor-
resp, 095 (TEC LC), MDR.
THE ELECTROMAGNETIC PROCESS
147
Electromagnetic Plant in Full Operation
Manhattan Project, but replaced
Ruhoff as head of the Madison
Square Office. ^^
Although there was a gradual, but
not spectacular, improvement in elec-
tromagnetic production, intermittent
expressions of dissatisfaction with the
way the plant was operating contin-
ued. For example, British scientists
working at the Radiation Laboratory
came away from a visit to the plant
highly critical of certain design fea-
tures of process equipment and of the
alleged gross inefficiency of the serv-
ice crews. Marcus Oliphant, head of
the British group, also found serious
fault with personnel and organization.
He wrote to Sir James Chadwick in
November 1944, expressing concern
at the "poor quality of the higher
grade personnel in TEC [Tennessee
Eastman Corporation] . . . [and] the
clumsiness of the army organization,
which neither controls nor checks the
operation except in a very desultory
and inefficient manner." ^^
Partially as a reaction to this con-
tinuing criticism, but chiefly as a re-
flection of frayed nerves under the
long strain, Tennessee Eastman ex-
ecutives complained bitterly in April
1945 to Brig. Gen. Thomas F. Farrell,
^' Llr, Lawrence to Nichols, 12 Jul 44, Admin
Files, Gen Corresp, 020 (MED-Org), MDR; MDH,
Bk. 5, Vol. 6, p. 8.1, DASA.
"Ltr, Oliphant to Chadwick, 2 Nov 44, Admin
Files, Gen Corresp, 201 (Chadwick, J), MDR;
Baxter, Notes on Alpha and Beta Output, 6 Nov 44,
Admin Files, Gen Corresp, 600.12 {V-12), MDR.
See also Interv, Author with Dr. Elkin Burckhardt
(physicist, V-12), CMH.
148
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
who had been serving as Groves's
deputy since February, that the firm
was not getting the recognition it de-
served for what it had accompHshed
at the CHnton Works. Operation of
the electromagnetic plant should be
viewed for what it actually was, a
huge pilot plant, not a normal indus-
trial operation. While, undoubtedly,
there were deficiencies that the firm
could correct, there were also handi-
caps which it could not possibly over-
come. The plant had been designed
with few interchangeable parts; the
damage to equipment had been
greater than projected; and the pro-
gram had been constantly changing,
as in the case of the recent shifts to
thermal and gaseous diffusion feed
materials. In the light of all these
mitigating factors, they were especial-
ly disturbed by the implication of
General Groves's remark to the oper-
ating supervisors that "they should
work until they fell into their graves
just as the war was over." ^^
The criticisms and complaints
began to lose some of their sting by
late spring of 1945 as rapidly increas-
ing production provided concrete evi-
dence that the plant was going to be
a success. In January, all the race-
tracks had demonstrated their ability
to perform at predicted capacity, even
though delays in servicing, chemistry,
and procurement of parts still im-
posed a drag on full production. In
February, the first slightly enriched
(1.4 percent) uranium feed had come
from the new thermal diffusion plant,
and in March the first enhanced
(5 percent and up) material from
the gaseous diffusion plant. In April,
the gaseous plant began turning out
uranium sufficiently enriched to go
directly into the Beta racetracks,
gradually increasing product enrich-
ment until it reached 23 percent on
5 August: the day before the first
bomb was dropped on Japan.
Because of the higher enrichment
of the Beta feed material, the Alpha
stage was no longer necessary. In
early September 1945, with the occu-
pation of Japan going forward suc-
cessfully, plant officials ordered the
Alpha racetracks shut down. They
had produced more than 88 kilo-
grams of final product with average
enrichment of 84.5 percent. Beta con-
tinued in operation until the end of
the year, producing an additional 953
kilograms of final product with an en-
richment of about 95 percent. ^"^
"Memo, Farrell to Groves, sub: Apr 18th Conf at
Clinton, 19 Apr 45, Admin Files, Gen Corresp, 337
(CEW), MDR,
5''MDH, Bk. 5, Vol. 6, pp. 4.13-4.14 and Top
Secret App., DASA.
CHAPTER VII
The Gaseous Diffusion Process
By late 1942, atomic project leaders
had authorized development of four
technically and theoretically different
processes — the electromagnetic, gase-
ous and liquid thermal diffusion, and
gas centrifuge — as potential methods
for producing sufficient U-235 of a
quality to be militarily useful in
World War II. Work on these proc-
esses had been in progress for about
two years, long enough to make appar-
ent the relative advantages and disad-
vantages of each.
Because no single method appeared
capable by itself of producing the
badly needed U-235, Manhattan lead-
ers conceived the possibility of em-
ploying two or more of the processes
in combination. They readily en-
dorsed the electromagnetic as one of
the methods; unlike the other three, it
could begin producing adequately en-
riched U-235 from an only partially
completed plant. Selection of the
other process for full-scale develop-
ment in tandem with the electromag-
netic came in early December. The
Lewis reviewing committee gave the
gaseous diffusion process a solid en-
dorsement, recommending construc-
tion of a 4,600-stage plant capable of
producing 90 percent U-235 in sub-
stantial quantities. Meeting on the
tenth, the Military Policy Committee
then approved this recommendation,
basing its decision upon the conclu-
sion that even though project scien-
tists had yet to satisfactorily design
the key components for a gaseous dif-
fusion plant, the process was, never-
theless, more likely to produce a suffi-
cient quantity of fissionable material
suitable for an atomic weapon than
either the liquid thermal diffusion or
centrifuge processes.^
Gaseous Diffusion Research and the
Army, 1942-1943
Research and development on the
diffusion process, which had started
in 1940, centered at Columbia Uni-
1 The Military Policy Committee approved contin-
ued but limited support for research and develop-
ment of the liquid thermal diffusion and centrifuge
processes. The detailed arguments for and against
full-scale development of these processes may be
found in Memo, Richard C. Tolman (Groves's scien-
tific adviser) to Groves, sub: Visit to Centrifugal
Plant at Bayway, N.J., 20 Dec 43, Admin Files, Gen
Corresp, 201 (Tolman), MDR; Draft Rpt, Lt Col
John R. Ruhoft", sub: Summary on Atomic Energy,
17 Jun 46. Admin Files, Gen Corresp, 600.12
(Atomic), MDR; MPC Min, 12 Nov and 10 Dec 42,
OCG Files, Gen Corresp, MP Files, Fldr 23, Tab A,
MDR; MDH, Bk. 2, Vol. 3, "Design," pp. 3.1-3.2,
DASA; Conclusions of Reviewing Committee, 4 Dec
42, Admin Files, Gen Corresp, 334 (Special Review-
ing Committee), MDR; Ltr, Urey to Conant, 4 Sep
43, Admin Files, Gen Corresp, 201 (Urey), MDR.
See also Chs. VI and VIII.
150
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
versity under the direction of two
members of the faculty, Harold C.
Urey, an eminent physical chemist
and Nobel Prize winner (1934), and
John R. Dunning, a young physicist.
Supported since 1941 by funds from
the Navy and an OSRD contract, dif-
fusion research by December 1942
had made substantial progress toward
development of a large-scale expan-
sion of the process. On the basis of a
theory provided by Karl P. Cohen, a
young mathematician on the Colum-
bia staff, the Columbia research
group had built Pilot Plant No. 1, a
small twelve-stage apparatus, in the
university's Pupin Hall. And oper-
ation of this unit in the fall of 1942
had furnished valuable data on the
major elements of a diffusion plant,
most significantly, the material for the
barrier component that filtered the
process gas in each separating stage. ^
When the Army began taking over
direction of the atomic bomb project
in the summer of 1942, the Columbia
diffusion research program continued
to operate under OSRD contracts.
Beginning in the fall, the Manhattan
District gradually extended its control
over administration of the program,
culminating with Columbia's accept-
ance of a War Department contract
on 1 May 1943. Shortly thereafter
university and District representatives
reorganized the diffusion research
program, redesignating it as the SAM
(for Special Alloyed Materials) Lab-
oratories and appointing Urey as di-
rector. (See Map 2.) Maj. Benjamin K.
Hough, Jr., who had come to Colum-
bia in the spring as area engineer for
the program, reorganized his office to
conform to the SAM organization and
moved with most of the rapidly ex-
panding research activities from
campus laboratories to more spacious
facilities in the university's Nash
Building, a few blocks north of the
campus.^
Design and Engineering
The Military Policy Committee,
after deciding to give priority to full-
scale development of the gaseous dif-
fusion process, selected the M. W.
Kellogg Company to design and engi-
neer the production plant, designated
K-25 for security reasons. The choice
was a logical one, for the firm was al-
ready extensively involved in diffusion
research under OSRD contracts, in-
cluding design of a ten-stage pilot
plant for barrier development. On 14
December 1942, Kellogg accepted a
letter contract from the Manhattan
District, with some unusual provisions
that reflected the unique character of
the project. The Army required no
guarantees from the firm that it could
successfully design, build and put into
operation a gaseous diffusion produc-
tion plant. For reasons of security, the
company agreed to set up a separate
corporate entity, the Kellex Corpora-
tion, to function as a self-sustaining
and autonomous organization for car-
rying out the project. Because of the
great uncertainty regarding the pre-
2 Smyth Report, pp. 125-26 and 132-33; Hewlett
and Anderson, New World, pp. 97-101; MDH, Bk. 2,
Vol. 2, "Research," pp. 4.11-4.12, 4.14-4.15, 7.2-
7.3, DASA.
3 Cert of Audit MDE 103-46, Columbia Area,
27 Feb 46, Fiscal and Audit Files, Cert of Audit
Registers, MDR; MDH, Bk. 2. Vol. 2, pp. 2.1-2.2,
11.1-11.3, App. B (Org Chart, Columbia Area,
4 Aug 43), DASA; Groves, Now It Can Be Told, p. 111.
Groves remembered the code name SAM as stand-
ing for Substitute Alloy Materials rather than Spe-
cial Alloyed Materials.
THE GASEOUS DIFFUSION PROCESS
151
cise scope and cost of the project, the
District and Kellogg also agreed to
defer fixing any financial terms until
later execution of a formal fixed-fee
contract. (This was not actually ac-
complished until April 1944, when
Kellogg accepted payment of about
$2.5 million for its work.) *
Kellogg provided the Kellex Corpo-
ration with its own research, engi-
neering, expediting, accounting, and
service divisions. It designated one of
its own vice presidents, Percival C.
Keith, a Texas-born chemical engi-
neer and graduate of Massachusetts
Institute of Technology, to be execu-
tive in charge at Kellex. Keith, who
had already gained considerable fa-
miliarity with the atomic bomb
project through his service on the
OSRD S-1 Section's planning board,
not only drew upon managerial and
technical employees of Kellogg but
also borrowed personnel from other
firms in order to staff Kellex. Kellex
employees — some thirty-seven hun-
dred at the height of the firm's activi-
ties in 1944 — worked in the New York
area at Kellex's headquarters in the
downtown Manhattan Woolworth
Building, at Columbia University's
laboratory facilities in the Nash Build-
ing, and at Kellogg's Jersey City
plant; and in Tennessee at the Clin-
ton Engineer Works. ^
* Ltr Contract W-7405-eng-23, 14 Dec 42, and
Formal Contract W-7405-eng-23, 1 1 Apr 43, both
in Contract Files, OROO; MDH, Bk. 2, Vol. 2, pp.
3.4-3.6 and App. A, DASA; Memo, Nichols to Car-
roll L. Wilson (Ex Asst to Bush), sub: Background
on P. C. Keith, 10 Jan 47, Admin Files, Gen Cor-
resp, 201 (Keith), MDR; Ltr, Keith to WD. Attn:
Groves, 25 Jan 44, Admin Files, Gen Corresp, 167,
MDR.
*Memo, Nichols to Wilson, sub: Background on
P. C. Keith, 10 Jan 47, MDR; Groves, Xow It Can Be
Told, pp. 112 and 428; Ltr, M. W. Kellogg to
Groves, 9 May 45, Admin Files, Gen Corresp,
To oversee the work of Kellex, as
well as to handle the administrative
details relating to the large number of
Special Engineer Detachment person-
nel assigned to the firm (nearly one
hundred by mid- 1944), the district
engineer in January 1943 established
the New York Area Engineers Office
in the conveniently located Wool-
worth Building and assigned Lt. Col.
James C. Stowers not only as the new
area engineer but also as the unit
chief for the entire K-25 project. At
the start Stowers supervised a military
and civilian staff of less than twenty;
it remained small, never numbering
more than seventy. While monitoring
performance on the Kellogg contract,
this New York staff also coordinated
the unusually complex developmental
diffusion research of numerous con-
tractors— including Princeton Univer-
sity working on barrier corrosion;
Ohio State University on chemical
compounds as feed materials and proc-
ess gas; and Union Carbide's Carbide
and Carbon Chemicals Corporation,
Linde Air Products Company, and
Bakelite Corporation, Western Elec-
tee's Bell Telephone Laboratories,
and Interchemical Corporation, all on
suitable barrier fabrication.^
231.21 (Kellex), MDR; Ltr, Keith to WD, 25 Jan 44,
MDR; MDH, Bk. 2, Vol. 3, pp. 18.5-18.7 and Apps.
C14-C15 (Org Charts), DASA.
^Ltr, R. B. Van Houten (Asst Proj Mgr, Kellex) to
John H. Arnold (Kellex R&D Dir), sub: SED Per-
sonnel Assigned to Nash Bldg (with attached ros-
ters), 28 Jun 44, Army Personnel Files, Box 73A (1-
A), Kellex, OROO; Cert of Audit MDE 202-46, New
York Area, 1 Nov 45, MDR; Memo, Groves to Dist
Engr, sub: List of Personnel, 27 Sep 43, Admin
Files, Gen Corresp, 201 (Gen), MDR; Org Chart,
Kellex Corp., 8 Apr 45, Admin Files, Gen Corresp,
231.21 (Kellex), MDR; Org Charts, U.S. Engrs
Office, MD, 15 Aug and 1 Nov 43, 10 Nov 44,
26 Jan 45, Admin Files, Gen Corresp, 020 (MED-
Conlinued
152
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Theoretical and Practical Problems
The complexities and difficulties in
gaseous diffusion plant design arose
from the nature of the process itself,
which required a stable compound of
uranium that would exist as a fluid at
ordinary temperatures, and also from
the almost total lack of any adequate
data on what would happen when the
process was transformed from a labo-
ratory phenomenon into a mass pro-
duction operation.' In 1941, Karl P.
Cohen had worked out the fundamen-
tal theory of the gaseous diffusion
process by applying the well-estab-
lished Graham's Law to the only
known gaseous compound of urani-
um, the highly corrosive uranium
hexafluoride. Briefly stated, Graham's
Law holds that if a mixture of two
Org), MDR; MDH, Bk. 2, Vol. 2, pp. 2.2-2.5, Vol. 3,
pp. 18.2-18.5 and Apps. C7-C13 (Org Charts), and
Vol. 4, "Construction," App. C16 (Org Chart),
DASA; Ltr, Keith to Nichols, 6 Aug 43. Admin Files,
Gen Corresp, Misc File (unmarked fldr), MDR; Ltr,
Tolman to Groves, sub: Visit to Bell Tel Labs To
Discuss Work on Barrier Problem, 9 Oct 43, Admin
Files, Gen Corresp, 319.1 (Rpts), MDR.
^Subsection based on MDH, Bk. 2, Vol. 2 (espe-
cially pp. 2.4 and 8.5-8.6) and Vol. 3, and Bk. 7,
Vol. 1, 'Teed Materials and Special Procurement,"
pp. 9.6-9.9, DASA; Hewlett and Anderson, \eu<
World, pp. 125-131; Gowing, Bntain and Atomic
Energy, pp. 57-58 and 218-25; Completion Rpt, M.
W. Kellogg Co. and Kellex Corp., sub: K-25 Plant.
Contract W'-7405-eng-23, 31 Oct 45, pp. 5 (re-
vised)-6, OROO; Interv, Author with Cohen, 8 Jul
82, CMH; Karl Cohen, The Theoiy of Isotope Separation
as Applied to the Large-scale Production of U-235, ed.
George M. Murphy, in Division IH, Special Separations
Project. National Nuclear Energy Series, Vol. 3 (New
York: McGraw-Hill Book Co., 1951), pp. 5-29;
Memo, Dunning to George T. Felbeck (K-25 Proj
Mgr, Kellex), Albert L. Baker (Kellex Chief Engr),
and Keith, sub: Importance of Low Humidity at K-
25 Plant Site, 17 Apr 43, Admin Files, Gen Corresp,
601 (CEW), MDR; Safety Committee. Bull SM-2,
Safety Committee Regulations for Handling C-126
(Fluorine), Admin Files, Gen Corresp, 729.31,
MDR. On the question of cooler design, see Calen-
dar of Events, Internal vs. External Coolers, 6 Mav
44, Admin Files. Gen Corresp. 001, MDR.
gases of unequal densities is placed in
a porous container surrounded by an
evacuated space, the lighter gas will
tend to escape at a more rapid rate
than the heavier. If the process can be
controlled, separation can be carried
forward by stages until an almost
pure concentration of the hghter
component is achieved. How much
more of the lighter than the heavier
component passes through a single
stage depends upon the density of the
gases and the difference in their mo-
lecular weights. In the case of urani-
um hexafluoride, the difference is
very small indeed, the lighter U-235
constituting only 0.85 percent.
Hence, the highest enrichment of the
lighter isotope in a single stage is
1.0043 times that of the heavier.
In practice, the degree of single-
stage separation actually attainable is
affected by the size, number, and dis-
tribution of the apertures, or pores,
in the barrier through which the proc-
ess gas passes and the variations in
the pressure of the gas itself. After in-
vestigating whether these limiting fac-
tors could be overcome sufficiently to
make possible construction of an effi-
cient plant in terms of time and
output, Cohen proposed building a
plant of forty-six hundred stages to
produce 90 percent U-235. This
plant would operate as a single cas-
cade, with each stage feeding en-
riched material to the next higher
stage and depleted material to the
stage below. Operating at a relatively
high pressure, the plant would have a
low holdup of material in the barrier,
thus reducing the equilibrium time —
that is, the time required to complete
the process.
THE GASEOUS DIFFUSION PROCESS
153
The single cascade design contrast-
ed with the diffusion plant design on
which British atomic scientists had
been working since 1940. Their pro-
posed plant would employ a cascade-
of-cascades arrangement with low
pressure and high holdup. Such a
plant had certain advantages over the
American design; its lower-operating
pressure and temperature made the
solution to the barrier problem easier
and reduced the corrosive effect of
the process gas. The British scientists
also claimed their cascade-of-cascades
plant would have greater operating
stability and present fewer mainte-
nance problems, but American engi-
neers rejected the design because its
high holdup would increase the equi-
librium time substantially.
With the results of Cohen's studies
and the British experiments at hand,
SAM scientists and Kellex engineers
worked as a team to design the basic
gaseous diffusion production unit.
This unit, designated the stage, had
three main elements: a converter,
control valve, and centrifugal pumps.
The converter consisted of a barrier,
its most central feature, and a cooler.
The highly porous metallic barrier,
initially comprised of flat plates but in
final design made up of annular bun-
dles of small tubes arranged and sup-
ported in much the same fashion as
the conventional shell-and-tube heat
exchanger long employed in steam-
powered engines, filtered the process
gas to separate uranium isotopes; the
cooler, a circular bundle of finned
copper tubes in the head of the con-
verter, removed the process-generat-
ed heat and controlled the stage tem-
perature. The system's control valve,
an adaptation of the conventional
butterfly valve, maintained the re-
quired stage pressure, and its centrif-
ugal pumps, consisting of a booster
and blower, transported and fed the
process gas from one stage to
another.
The Columbia-Kellex designers
considered combining the stage's con-
verter, control valve, and pumps in a
completely sealed unit. This design
offered certain advantages, especially
with respect to maintaining a vacuum
and preventing leaks. The unit, how-
ever, would be bulky and its compo-
nents difficult to service. And, more
importantly, its fabrication would re-
quire more time than separate fabri-
cation of its component parts. To
overcome these disadvantages, the
designers modified their original dif-
fusion stage concept. Final equipment
designs called for the control valve
and the pumps and its motors to be
outside the converter. Although Car-
bide and Carbon engineers had sug-
gested that the cooler be removed
from the converter and manufactured
as a separate unit, the Columbia-
Kellex team rejected this proposal,
feeling that such a change would slow
down delivery of the converters.
This modified stage design, never-
theless, forced the Columbia-Kellex
designers to contend with another
mechanical problem — how to prevent
leakage. After extensive testing they
proposed that both pumps and
motors be encased in a vacuum-tight
enclosure containing inert gas, there-
by eliminating the primary obstacle in
centrifugal pump design: the need for
seals. The Westinghouse Electric and
Manufacturing Company built several
models of this design, which Colum-
bia scientists later successfully em-
ployed in laboratory tests. But before
154
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Columbia could develop a production
model, researchers at the Elliott Com-
pany in Pennsylvania had invented a
radically different type of seal for cen-
trifugal pumps. When tested at Co-
lumbia in early 1943, the designers
determined that this new type of seal
met all the requirements for the K-25
plant.
Some of the most difficult design
problems arose from the necessity of
using the highly corrosive uranium
hexafluoride as the process gas. Be-
cause earlier efforts by the OSRD to
find a substitute for uranium hexa-
fluoride had failed, the Army expand-
ed research by SAM, Princeton, and Du
Pont scientists in an effort to devise
ways to cope with the corrosive char-
acter of the gas. These investigations
established that the adverse effects of
corrosion could be inhibited through
pre-installation conditioning of the
process equipment and contributed to
the design of treatment methods.
The Barrier Problem
The heart of the gaseous diffusion
system was the barrier, the compo-
nent that proved most difficult to
design and fabricate.® Two objectives
» Subsection based on MDH, Bk. 2, Vol. 2, pp.
4.1-4.30 and 4.32-4.33, DASA; DSM Chronology,
16 Jun 44, Sec. 10, OROO; MPC Min, 13 Aug 43,
MDR; Ltr, Tolman to Groves, sub: Visit to Bell Tel
Labs To Discuss Work on Barrier Problem, 9 Oct
43, MDR; Ltr, Edward Mack, Jr. (SAM Labs), to
Urey, 31 Mar 44, Admin Files, Gen Corresp, 319.1
(Kellex and Others), MDR; Ltrs, Urey to Groves,
10 May 43, and Urey to Hough, 10 Nov 43, Admin
Files, Gen Corresp, 201 (Urey), MDR; Ltrs, Keith to
Groves, 23 Oct 43, and W. A. Akers (British group)
to Stowers, 26 Jun 44, and Min, Follow-up Review
Conf (K-25), 5 Jan 44, Admin Files, Gen Corresp,
001, MDR; Memo, Stowers to Groves, 7 Jan 44,
Admin Files, Gen Corresp, 095 (Kellex), MDR;
Hewlett and Anderson, \ew World, p. 139; Memo,
Tolman to Grove, sub: Status of Work on Pilot
guided barrier research and develop-
ment at Columbia University, as well
as at Kellex: find a material that
would efficiently separate U-235 and
U-238 in a hexafluoride compound,
and develop mass production meth-
ods for making the material into bar-
riers. Ongoing tests soon revealed
that this material had to have certain
essential characteristics, namely, be
highly porous; resistant to the reac-
tive nature of uranium hexafluoride;
capable of withstanding the stresses
of fabrication, installation, and utili-
zation; and suitable for mass
production.
Columbia research had experiment-
ed with a great variety of metals and
alloys over a two-year period (1941-
42), testing many of them in Pilot
Plant No. 1, but with repeated disap-
pointment. Finally, in December
1942, the experiments of researchers
Edward Norris and Edward Adler
with a form of corrosion-resistant
nickel revealed the material's highly
promising characteristics for satisfying
the exacting and rigorous barrier re-
quirements. To manufacture the
Norris-Adler barrier material in a
continuous process, as well as to test
other equipment under conditions ap-
proaching those anticipated in a
large-scale diffusion plant, the re-
search team at Columbia in January
1943 started building Pilot Plant
No. 2, a six-stage cascade unit, in the
Plants, Barriers, etc., in N.Y., 13 Mar 44, Admin
Files, Gen Corresp, 201 (Tolman), MDR; Memo,
Nichols to Groves, sub; Requirement for Nickel
Powder, 2 Mar 43, Admin Files, Gen Corresp,
600.12 (Research), MDR. In response to the atomic
program's need for large quantities of powdered
nickel. International Nickel Company built addition-
al manufacturing facilities in West Virginia, New
Jersey, and New York.
THE GASEOUS DIFFUSION PROCESS
155
Nash Building. In early summer, this
pilot plant began producing the
Norris-Adler barrier material. Initial
tests, however, revealed distressing
structural weaknesses and production
deficiencies; the nickel material's brit-
tleness made fabrication into tubes
difficult and the complex character of
the manufacturing techniques created
problems in achieving uniform quality
of production.
Manhattan leaders, nevertheless,
continued to be confident that the
barrier problem would be solved sat-
isfactorily. They intensified barrier re-
search and testing efforts of the Co-
lumbia team, as well as those of the
Kellex-Bell-Bakelite barrier research
group experimenting with a powdered
nickel barrier. The progress and re-
sults of these ongoing barrier-develop-
ment experiments were reviewed and
discussed in August, when the Military
Policy Committee convened on the
thirteenth. With cautious optimism,
the committee concluded that a suita-
ble— if not ideal — barrier would soon
be designed and fabricated, an im-
proved version of either the Norris-
Adler or Kellex barrier. But ensuing
results from months of testing dashed
the Columbia scientists' hopeful ex-
pectations of producing good-quality
barrier material; their Norris-Adler
prototype, though much improved,
was still too brittle and lacking in uni-
form quality. The Kellex-Bell-Bakelite
team's experiments, however, particu-
larly those with a material that com-
bined some of the best features of the
Norris-Adler and the powdered nickel
barriers, demonstrated that its new
barrier achieved good separation char-
acteristics and presented fewer fabrica-
tion problems.
In early November, Groves endeav-
ored to reach a workable solution as
to the direction barrier development
should proceed. After listening to ar-
guments from Urey and the Columbia
scientists in support of the latest bar-
rier they had devised and to Keith
and the Kellex group concerning the
advantages of their improved pow-
dered nickel barrier, Groves decided
that the most feasible policy was to
continue work on both types, the
Kellex barrier providing insurance
against the possible failure of the Co-
lumbia barrier. Predictably, this com-
promise was unpopular with both
sides. Urey, in particular, who from
the start had resented the diversion of
effort from his own project to the
Kellex group to accelerate barrier de-
velopment, saw it as further indica-
tion of Groves's intention to exclude
Columbia from all useful work on the
atomic project, and he reminded the
Manhattan commander that he had al-
ready transferred both the pile ex-
periments and the heavy water re-
search from Morningside Heights to
Chicago.
Contributing to Urey's harsh judg-
ment of the intent of Groves's action
was his awareness of the discourage-
ment felt by many of those working
on the barrier problem. In fact, by
the end of 1943, morale had plum-
meted to a very low point. Not the
least of the factors causing this pre-
vailing pessimism was adverse criti-
cism of the Columbia-Kellex plant
design by some members of the Brit-
ish delegation of scientists assigned to
the atomic project. The British ex-
pressed decided preference for the
cascade-of-cascades design of their
own plant, arguing that the single cas-
156
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
cade design of the American plant
would not eliminate the "surges" —
sudden, sharp variations in gas pres-
sure— that might well make the Ten-
nessee plant inoperable. While also
stating a preference for Kellex's im-
proved powdered nickel barrier over
Columbia's, the British considered
even the Kellex barrier to be far from
perfected. Finally, too, the visiting sci-
entists indicated great skepticism that
Kellex would have the production
plant in operation by the projected
date, 1 July 1945. Groves sharply dis-
agreed with the British on this last
point, holding that, if Kellex was rea-
sonably certain the plant would be
operating by that date, it probably
would be in production even sooner.
Keith and his Kellex colleagues par-
ticularly resented the visit of the Brit-
ish scientists. In January 1944, the
Kellex chief asserted that the British
had set progress back a month be-
cause of time spent answering ques-
tions and assisting them in making
studies, many duplicating studies
made by his own engineers months
earlier. At the same time, he com-
plained to the New York area engi-
neer that Groves appeared to be
avoiding a decision on the barrier
question and also seemed to be trying
to push back the plant completion
date. Colonel Stowers wrote hurriedly
to General Groves, expressing anxiety
at the alarming decline of enthusiasm
he noted in the normally ebullient
and confident Kellex chief.
But much of the gloom prevailing
at Kellex and Columbia was dispelled
by developments in the early months
of 1944. On 16 January, Groves met
with representatives of Kellex, Car-
bide and Carbon, SAM Laboratories,
and the Houdaille-Hershey Corpora-
tion to discuss progress on the bar-
rier. The group convened at Decatur,
Illinois, where Houdaille-Hershey was
building a new plant for the manufac-
ture of barriers of the Norris-Adler
type. At the conclusion of the meet-
ing Groves announced that the Deca-
tur plant would be converted immedi-
ately so that it could produce Kellex's
improved powdered nickel barrier,
because it was considerably easier to
fabricate and manufacture than the
Norris-Adler. Fortunately, a lot of
precious production time was not lost
during the conversion process. Most
of the equipment and many of the
procedures for producing the Norris-
Adler barrier were readily adapted for
producing the Kellex type.
An important factor in Groves's de-
cision to go ahead with mass produc-
tion of the Kellex barrier was his
knowledge of the International Nickel
Company's successful production of a
high-quality powdered nickel, thus
providing a ready source of the type
of nickel out of which the Kellex bar-
rier could be best fabricated. In what
proved to be a most fortuitous move,
the Manhattan commander had di-
rected Colonel Nichols in the spring
of 1943 to have the company build fa-
cilities for the manufacture of barrier
material. And because of this early
start, company technicians by early
1944 had developed a process for
producing powdered nickel of a type
and quality especially suitable for fab-
ricating the Kellex barrier. In fact, by
April, the firm had accumulated in its
storage facility some 80 tons, more
than enough for immediate shipment
to the diffusion pilot plants in New
York.
THE GASEOUS DIFFUSION PROCESS
157
Meanwhile, barrier developments at
Columbia also provided more reason
for optimism. Pilot Plant No. 2 had
begun turning out sizable amounts of
a good-quality Norris-Adler barrier.
Thus, before receipt of the District's
orders in April to convert No. 2 to
manufacture Kellex's improved pow-
dered nickel barrier, Columbia scien-
tists had the satisfaction of being the
first to achieve quantity production of
their material.
Pilot plant testing and production
of barrier materials continued apace
into the summer of 1944. While pro-
viding the first opportunity to ascer-
tain the separation qualities of the
Kellex barrier under conditions simu-
lating large-scale plant operations,
these pilot plant tests demonstrated
the need for more improvements.
But, at this juncture, with the con-
tinuing lack of barrier components
threatening to hold up further
progress in design and construction
of the main diffusion plant at the
Clinton site, Manhattan Project lead-
ers knew the time for experimentation
was at an end. They now felt the ur-
gency of directing all of their efforts
to expediting Houdaille-Hershey's
mass production of the less than ideal
Kellex barrier in sufficient quantity to
equip each of the thousands of stages
of the Tennessee plant.
Plant Design
In the early stages of planning, ev-
eryone had assumed that the objec-
tive was to design and build a gaseous
diffusion plant capable of producing
a 90-percent-enriched product. But
data that became available to the
design teams from ongoing research
and pilot plant studies indicated that
considerable time in design and engi-
neering would be saved if the cascade
equipment were limited to that pro-
ducing a product of lower enrich-
ment. Theoretically, a cascade con-
structed with tubular barriers would
be efficient up to the point of a 36.6-
percent concentration; for higher
product enrichment, quite differently
designed barriers would be necessary.
Furthermore, the plant designers
soon discovered that, because of the
greater capacities required, the cen-
trifugal pumps under development
for the lower stages could not be
used above the 36.6-percent level. In
other respects, too — for instance, in-
creased likelihood of critical product
accumulation — the design of the
upper stages presented special
problems.
General Groves, as early as Febru-
ary 1943, cited an alternative solution
that would save much time and
seemed certain to work: Why not take
the output from the lower stages of
the gaseous diffusion plant and feed
them into the Beta phase of the elec-
tromagnetic plant? By mid-year, elec-
tromagnetic plant construction was
going so well that this solution
seemed all the more feasible. Groves
therefore asked Kellex to submit esti-
mated completion dates for 5-, 15-,
36.6-, and 90-percent plants. On the
basis of these estimates, he then in-
structed Keith and the Kellex design
teams to draw up plans for a 36.6-
percent plant. Meanwhile, research on
the upper stages continued on a re-
duced scale.
As a consequence, by late 1943,
project design was making substantial
progress in most directions. The
knottier aspects of pump design and
158
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
procurement appeared to be solved;
soon, the Allis-Chalmers Manufactur-
ing Company and several smaller
firms would be able to satisy all of the
District's requests for pumps in what-
ever quantities needed. Also, the
pump seal problem appeared to be
well on the way to solution.^
Although lack of a really suitable
barrier had prevented development of
adequate equipment for testing the
diffusion operation on something ap-
proaching production plant scale, it
had not held up completion of Kellex
designs for the overall plant. These
designs projected as the main gaseous
diffusion production unit a cascade of
2,892 stages, connected in a single
series. Ideally, Kellex engineers might
have incorporated into the plant
design a requirement for a converter
and pumps of slightly smaller size at
each successive stage in the cascade.
Because this, however, would have re-
sulted in extremely complicated and
costly manufacturing and installation
problems, they compromised. They
provided for five different-sized
pumps and four different-sized con-
verters, thus dividing the whole cas-
cade into nine variably pressurized
sections. The sections normally would
function as a single cascade, although
each could be operated individually.
Within each section the smallest oper-
able unit was the cell, containing 6
stages enclosed in a sheet metal cubi-
cle that would be supplied with dry
^Min, Coordination Committee Mtg, 13 Feb 43,
and Ltrs, S. B. Smith (Kellex) to Stowers, 7 Sep 43,
Admin Files, Gen Corresp, 337 (Univ of CaliO and
(Kellex), respectively, MDR; Ltr, Oppenheimer to
Nichols, 1 Jul 43, and Memo, Arnold and Dunning
to Keith, sub: The Diffusion Plant, 28 Apr 43,
Admin Files, Gen Corresp, 600.12 (Projs and
Prgms: K-25), MDR; MDH, Bk. 2, Vol. 2, pp. 5.1-
5.28, and Vol. 3, pp. 7.1-7.3 and 8.12-8.14, DASA.
air and kept heated to a uniform
temperature. ^°
Design of the cascade unquestion-
ably constituted the single most im-
portant and difficult feature of the
gaseous diffusion production plant.
But for the Kellex engineers it was
only a small part of the job. Working
in cooperation with numerous equip-
ment and supply contractors, they
also had to prepare blueprints and
specifications for a vast array of sup-
port and control facilities. Cascade
operation, for example, required
purge cascades, process gas recovery,
surge and waste, and product removal
systems, as well as a large number of
instruments for maintaining a con-
stant check on all conditions through-
out the plant. Plant instrumentation
had to be extremely reliable, for even
slight variations in such factors as
pressure or temperature could
produce adverse effects.
To house the main cascade and its
auxiliary facilities, Kellex engineers
designed a huge structure of fifty-four
contiguous units, or buildings, ar-
ranged in a gigantic U-shaped pat-
tern more than half a mile long on
each side and a quarter of a mile
wide. They laid out the interior of
these buildings on four different
levels: a basement housing lubricating
and cooling equipment, ventilating
fans and ducts, and transformers and
electrical switchgear; a cell floor con-
taining the steel-encased cells lined
up in two parallel rows extending the
length of a building; a pipe gallery
carrying the main process lines and
numerous auxiliary lines; and an op-
'OMDH, Bk. 2, Vol. 3, Sees. 8 and 9, DASA; Com-
pletion Rpt, Kellex Corp., sub: K-25 Plant, 31 Oct
45, pp. 5(revised)-8, OROO.
THE GASEOUS DIFFUSION PROCESS
159
crating floor, the location of most of
the control devices and meters for
cascade operation. At the operating
floor level they placed a central con-
trol room at the base of the U , with
instruments to keep track of the
whole process and remote controls
for all motorized valves.
After completion of the cascade
design for the plant at the Clinton
Engineer Works (CEW), most of the
research and development teams at
Columbia and Kellex, and elsewhere,
turned their primary energies to engi-
neering and testing equipment and
support facilities. With Groves's per-
mission, however, a few SAM and
Kellex researchers and engineers con-
tinued work on developing diffusion
equipment that could achieve a
higher product enrichment. In sup-
port of this investigation, in late
summer of 1944 Kellex placed a 10-
stage pilot plant in operation. By mid-
January 1945, Kellex was ready to
begin engineering and procurement
for an extension to the upper stages
of the K-25 plant that would bring
the level of its product to an enrich-
ment of approximately 85 percent.
Groves authorized Kellex to proceed,
but canceled the extension when data
showed a greater product output
could be achieved by increasing the
amount of uranium of a lower per-
centage of enrichment for feeding
into the electromagnetic plant. To
achieve this goal. Groves directed
Kellex to design and engineer a 540-
stage side-feed unit (later designated
K-27) in which the waste output from
the main K-25 cascade could be com-
bined with natural uranium to
produce a slightly enriched product.
By feeding the K-27 output into the
higher stages of K-25, plant designers
estimated the total production of
U-235 could be increased by 35 to
60 percent. Kellex hoped to get the
K-27 extension into operation early in
1946.11
Building the Gaseous Diffusion Plant
The Tennessee site for the gaseous
diffusion plant consisted of a tract of
5,000 acres in the northwest corner of
the CEW reservation, approximately
15 miles southwest of the town of
Oak Ridge. 12 {See Map 3.) Enclosed
i^Dist Engr, Monthly Rpts on DSM Proj, Mar-
Apr 45 to Mar 46, OCG Files, Gen Corresp, MP
Files, Fldr 28, Tab A, MDR; MDH, Bk. 2, Vol. 3,
Sec. 14, DASA; Completion Rpt, M. W. Kellogg Co.
and Kellex Corp., sub: K-27 Extension, 31 Jan 46,
p. 3 (revised), OROO.
^2 Subsection based on Completion Rpt, Kellex
Corp., sub: K-25 Plant, 31 Oct 45, pp. 4, 8-10, 14-
28, 30-31, 33 (revised), and maps following p. 40,
OROO; MDH, Bk. 2, Vol. 4, pp. 2.6-2.7, 3.3-3.9.
3.46-3.51, 3.73-3.75, 5.1-5.4, 7.1, and Apps. CI
(Chart, Actual K-25 Constr Progress), C7 (Chart,
Process Area Constr Progress), C16 (Org Chart),
C25 (Chart, Daily K-25 Constr Forces), and Vol. 5,
"Operation," pp. 6.3-6.4, DASA; Memo, Dunning
to Felbeck, Baker, and Keith, sub: Importance of
Low Humidity at K-25 Plant Site, 17 Apr 43, MDR;
Groves, Now It Can Be Told, pp. 12 and 116-17;
Completion Rpt, Kellex Corp., sub: K-27 Extension,
31 Jan 46, p. 21 (p. 2 of attached cost statement),
OROO; Dist Engr, Monthly Rpts on DSM Proj,
1 Jul-9 Aug and Sep 43, Apr, Jun, Aug and Oct 44,
and Mar and Sep 45, MDR; Org Charts, U.S. Engrs
Office, MD, 15 Aug and 1 Nov 43, and 15 Feb 44,
MDR; Maj William T. St. Clair (MD officer who
monitored K-25 plant construction). Daily Diary,
9 Nov 43-13 Sep 45, passim, Kellex Records, Box
748, OROO; Draft Article, Maj Gen Leslie R. Groves,
"Development of the Atomic Bomb," Admin Files,
Gen Corresp, 000.74 (Mil Engr), MDR; Ltrs, Keith
to Stowers, 6 Oct 44, Stowers to Dist Engr, sub:
Change of Estimate Opn Date of Case I, 10 Oct 44,
and Groves to Dist Engr, 1 Nov 44, Admin Files,
Gen Corresp, 600.12 (Projs and Prgms: K-25),
MDR; Ltr, Tolman to Groves, sub: Status of Case V,
1 Feb 45, Admin Files, Gen Corresp. 319.1 (Rpts).
MDR.
160
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
on the north, south, and east by thick-
ly wooded ridges and on the west by
the Clinch River, the site had few
roads, no railroads (although a main
line was located a few miles to the
north), and only one substantial struc-
ture (a country schoolhouse). Project
engineers would have preferred a dif-
ferent location, especially one with
lower average humidity; however, be-
cause the land at Clinton had been
available for immediate purchase in
early 1943, Manhattan leaders did not
perceive the engineers' concern as
critical as their own desire to get
plant construction under way. Fur-
thermore, they felt that the site satis-
fied other major requirements. It had
a readily available water supply and a
relatively level area of about 1,000
acres for the plant facilities, and its
location was distant from the other
production plants and the densely
populated areas.
Under terms of the prime contract
with M. W. Kellogg, Kellex was to not
only design and engineer the K-25
plant but also supervise its construc-
tion, using its own large field forces
plus numerous contractors and sub-
contractors. The prime construction
contractor was the J. A. Jones Con-
struction Company of Charlotte,
North Carolina, whose reputation on
other Army projects had impressed
Groves. Typical of the more than
sixty subcontractors were the D. W.
Winkleman Company for grading and
drainage of the site, the Bethlehem
Steel Corporation for steel work, and
the Interstate Roofing Company for
installation of heating and ventilating
systems.
Wherever possible, Kellex delegat-
ed to Jones and the other contractors
specific procurement of equipment
and supplies needed in construction.
Similarly, it contracted out thousands
of orders for process and auxiliary
equipment. Major equipment manu-
facturers were AUis-Chalmers for cen-
trifugal pumps and motors of all
kinds; the Chrysler Corporation for
converters; and Houdaille-Hershey,
Linde Air Products, and Bakelite for
barrier material. Some of these
firms — for example, Allis-Chalmers,
Chrysler, and Houdaille-Hershey —
had to build entirely new plants or
undertake extensive conversion of ex-
isting facilities.
Through its rapidly expanding
Manhattan District organization, the
Army monitored and reviewed the
many hundreds of agreements negoti-
ated by Kellex, Jones, and other firms
in late 1943. During the first few
months of relatively limited oper-
ations at the building site, District En-
gineer Nichols exercised control over
the project through the New York
Area Engineers Office, whose staff
maintained constant contact with the
Kellex and Columbia University
groups, and through the CEW Con-
struction Division. But rapid expan-
sion of construction and procurement
activities eventually compelled Colo-
nel Nichols to reorganize his Tennes-
see headquarters staff, establishing
construction and operations divisions
for each major production project. In
his capacity as the K-25 unit chief,
and in keeping with normal Corps of
Engineers practice, Colonel Stowers
organized the new K-25 Construction
Division to parallel the organizational
structure set up by the principal con-
struction contractors — Unit I for the
power plant. Unit II for the condi-
tioning facilities, and Unit III for the
THE GASEOUS DIFFUSION PROCESS
161
the process plant — and assigned Maj.
William P. Cornelius as division
chief. 13
Actual construction started on the
day after Memorial Day 1943, when a
survey party began laying out the
power plant site at an area adjacent to
the east bank of the Clinch River.
Two months later grading began in
the area for the conditioning facili-
ties— a large structure to house the
treatment apparatus for coating proc-
ess equipment with fluorine gas, thus
providing protection against the ex-
tremely corrosive action of the urani-
um hexafluoride process gas, and a
number of smaller buildings for the
generation and storage of fluorine,
production of gaseous nitrogen, and
neutralization. To ensure these facili-
ties would be ready in time so that
K-25 workers could treat the process
equipment before installation in the
main production plant, Kellex and
District authorities decided to engage
a second major construction contrac-
tor— the firm of Ford, Bacon, and
Davis — to build them.
Ground preparation on the main
plant site did not start until 20 Octo-
ber 1943. Although relatively level by
comparison with the surrounding ter-
rain, the site was broken into ridges
and valleys that required cuts up to
50 feet and fills averaging 25 feet.
The great weight of the buildings that
would house the cascade and its com-
plicated, interconnected equipment
made exceptionally stable foundations
necessary. Ordinarily, such founda-
tions would have been carried down
to bedrock, a procedure that would
have required thousands of concrete
columns of different lengths. But, to
save time, Kellex used the then novel
method of compacted fill. Foundation
workers put down earth in 6-inch
layers, constantly checking in a field
laboratory for proper moisture con-
tent and soil mixture. Then they com-
pacted the fill with sheepsfoot rollers
to a density slightly greater than that
of undisturbed soil.^"* Next they
poured the foundation footings di-
rectly on top of the undisturbed earth
in the cut sections and on the com-
pacted fill in the filled-in sections. In
spite of the abnormally rainv weather
in the fall of 1943, the K-25 workers'
use of innovative construction tech-
niques enabled them to complete
laying down the foundations far more
quickly than would have been possi-
ble with more traditional methods.
Kellex engineers also employed
other time-saving methods, consistent
with their basic goal of completing
the production plant as rapidly as
possible. Thus, wherever feasible,
they overlapped activities normally
carried out separately. The day grad-
ing began, J. A. Jones crews also
poured concrete for the first building.
And, as soon as the foundations had
hardened, crews moved in heavy
gooseneck cranes (the foundations
had been deliberately designed to
carry their weight) and began lifting
the structural steel frames of build-
ings into place.
*^The conditioning area was comprised of facili-
ties for preparing process equipment for installation
in the process buildings. See Ch. XVIII for a fuller
description of the design and construction of the
K-25 power plant.
*■* Used to compact clay soil, a sheepsfoot roller is
a towed roller with a large number of 4-inch-long
steel bars welded radially to the surface of the roller
drum. See Diclwnary of Civil Engineering, s.v. "sheeps-
foot roller."
162
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Gaseous Diffusion Plant Under Construction at CEW
Another objective of Kellex's
speedup techniques was to get some
sections of the huge plant into oper-
ation as soon as possible. The firm's
initial construction schedule, adopted
in August 1943, provided for, first,
completing one cell for testing;
second, finishing one building as a
so-called 54-stage pilot plant; and
third, completing enough of the plant
to produce an enriched product con-
taining 0.9 percent U-235. The
schedule designated this first produc-
tion section. Case I. Three additional
cases, with outputs of 5-, 15-, and 36-
percent product enrichment, ^^ would
be finished as of 1 June, 15 July, and
23 August 1945, respectively. As con-
struction progressed, Kellex engi-
neers revised the original schedule to
conform to changing conditions.
Thus, the schedule of August 1944
called for completion in 1945 of Case
I (0.9 percent) on 1 January, Case II
(5 percent) on 10 June, Case III (15
percent) on 1 August, Case IV (23
percent) on 13 September, and a new
Case V (36 percent) as soon as possi-
ble thereafter.
To ensure adherence to this highly
complex and, in many respects unor-
thodox construction schedule, Kellex
'^ In their projections of estimated output the
Kellex design engineers reduced the original 36.6-
percent level of product enrichment to 36 percent.
See Completion Rpt, Kellex Corp., sub: K-25 Plant,
p. 3, OROO.
THE GASEOUS DIFFUSION PROCESS
163
K-25 Steel-frame Construction
adopted a variety of rigid control
measures. Typical were the two com-
plete and identical charts the firm
maintained, one in its New York
office and the other at the construc-
tion site, on which it recorded the
current manufacturing and delivery
status of the hundreds of thousands
of items required for building the
plant.
There were times, however, when
labor shortages, especially in the
skilled categories, were acute. The
contractors endeavored to overcome
some of the shortages by on-the-job
training and simplifying construction
tasks wherever possible. Fortunately,
too, because each stage of the plant
was comprised of similar basic com-
ponents, construction crews gained
skill and speed from the repetitive-
ness of their work. With the Army's
support, J. A. Jones and Ford, Bacon,
and Davis also sought to improve
living conditions and undertook other
ameliorative steps for their workers,
which reduced labor turnover and
limited work stoppages to about 0.1
percent of total man-hours. ^^
One unusual feature of the con-
struction work on the K-25 plant was
the exceptionally stringent emphasis
16 See Chs. X\'I and XVII for a more detailed dis-
cussion of manpower problems. See Ch. XXI for a
description of efforts to improve living conditions
for K-25 construction employees.
164
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
on cleanliness. Because even minute
amounts of foreign matter would have
highly deleterious effects on process
operations, construction workers had
to cleanse all pipes, valves, pumps,
converters, and other items of equip-
ment thoroughly before installation.
Workmen in a special unit performed
this vast operation in the large condi-
tioning building, using equipment for
solvent degreasing, alkaline cleaning,
acid pickling, scratch brushing, sur-
face passivation, and a variety of
other procedures. When they fin-
ished, they sealed all openings to in-
terior surfaces and kept them sealed
until installation teams put the equip-
ment into place.
To make certain no dust or other
foreign matter polluted the system
during installation, J. A. Jones insti-
tuted a rigid schedule of surgical
cleanliness in installation areas. Iso-
lating these areas with temporary par-
titions, the workers installed pressure
ventilation, using filtered air. Then
they cleaned the areas thoroughly,
and inspectors carefully checked all
personnel and material that entered
them. Maintenance crews with mops
and vacuum cleaners continued to
remove any foreign substances that
seeped in. When trucks had to enter,
workers hosed them down at the
entrances.
Workers wore special clothes and
lintless gloves. Because certain work
on equipment to be used in plant in-
stallations could not be done in the
dirt-free areas, such as welding pipes
and other small jobs, J. A. Jones in-
stalled special inflatable canvas bal-
loons and the work was done inside
them. The cleanliness control meas-
ures required many additional guards,
inspectors, and supervisors, but they
did not appreciably slow down the
work. In fact, in some ways the good
housekeeping actually facilitated the
progress of construction.
Even more painstaking was the in-
stallation of more than 100 miles of
pipe without flanged joints, and with
welds that had to meet tightness spec-
ifications more severe than any ever
encountered before in commercial
construction. Pipe-fitting crews devel-
oped fourteen special welding tech-
niques. Individual welders then learn-
ed the techniques, each specializing in
those required for a particular type of
installation. At the height of construc-
tion, there were some twelve hundred
welding machines in use. All of the
work required rigid control and tedi-
ous inspection to ensure joints were
tight and no internal scale formed
that might later find its way into the
process system
At last, on 17 April 1944, the first
6-stage cell of the main plant was
ready for test runs. Brief trial oper-
ations of this unit continued in May.
During the summer months, as con-
stuction crews finished additional
stages, technicians put them through
trial runs. Although barrier tubes
were not available (installation of the
first did not begin until fall of 1944),
these tests permitted assembly of val-
uable data concerning performance of
other plant components and detection
of mechancial defects, such as leaks
and sealant failures. Approximately
two months behind schedule, equip-
ment contractor workmen completed
Case I (402 stages) to the point where
processing of feed material could
begin, but at least another month
passed before the unit attained the
0.9-percent level. The other cases
THE GASEOUS DIFFUSION PROCESS
165
were completed either on time or
ahead of schedule. Kellex and J. A.
Jones transferred the last K-25 plant
unit to Carbide and Carbon, the op-
erating contractor, on 1 1 September
1945. Total construction cost, includ-
ing the 540-stage side-feed extension
(K-27) unit completed after the war,
was $479,589,999.
Plant Operation
In late 1942, when the atomic
project leaders were considering po-
tential operators for the gaseous dif-
fusion plant, Kellex's Percival Keith
expressed a strong preference for the
Union Carbide and Carbon Corpora-
tion.^'^ In this leading chemical firm
Keith saw a versatile organization
with skilled personnel who would be
able to not only operate the complex
diffusion production process but also
provide design, engineering, and con-
struction assistance to hard-pressed
Kellex engineers. Satisfied with
Keith's opinion. Groves directed Man-
hattan representatives to commence
negotiations with Union Carbide offi-
" Subsection based on DSM Chronology, 12 Dec
42, Sec. 4, OROO; Hewlett and Anderson, \eu<
World, pp. 120-22, 298-302, 374, 624-25; Dist
Engr, Monthly Rpts on DSM Proj, Dec 44 and Jan-
Sep 45, MDR, MDH, Bk. 2. Vol. 1, "General Fea-
tures," pp. 4.6 and 5.7, Vol. 2, pp. 2.2-2.3, and Vol.
5, pp. 2.1-2.7. 3.1-3.6, 4.3-4.4, 8.1-8.16 (especially
table following 8.3), 10.1-10.5, 12.1-12.2, and
Apps. Bl (Chart, K-25 Vacuum Testing Opns and
Progress), B22 (Org Chart, Ford, Bacon, and Davis,
31 Mar 44), F2 (Key Personnel, Carbide and
Carbon), DASA, Sm\\h' Report, p. 133; Org Charts,
U.S. Engrs Office, MD, 15 Feb 44, 1 Jun 44, 28 Aug
44, 10 Nov 44, 26 Jan 45, MDR; Memo for File, Maj
Wilbur E. Kelley (V-12 Opns Div chief), 23 Sep 44,
Admin Files, Gen Corresp, 600.12 (Projs and
Prgms: K-25), MDR; Completion Rpt, Kellex Corp.,
sub: K-25 Plant, p. 3, OROO; Memo for File, Brig
Gen Thomas F. Farrell (Grovess Dep), sub: Jul 12th
Confs in New York, N.Y., 13 Jun 45, Admin Files,
Gen Corresp, 337 (LC), MDR.
cials. Finally, in January 1943, Union
Carbide agreed to become the prime
operating contractor — but through its
subsidiary, the Carbide and Carbon
Chemicals Corporation — and selected
one of its vice presidents, physical
chemist and engineer George T. Fel-
beck, as project manager in charge of
K-25 operations.
In the letter contract with Carbide
and Carbon, Keith made certain that
there was a provision for Kellex to
obtain help in plant construction.
Later modifications in the formal con-
tract, signed in November 1943, ex-
tended the operating contractor's
area of responsibility to include co-
ordination of barrier research and de-
velopment, construction and oper-
ation of a plant for producing nickel
powder, conversion of Bakelite facili-
ties to produce special barrier materi-
al, and assumption in February 1945
of the SAM Laboratories research
program, hitherto operated by Co-
lumbia University.
Under terms of the prime contract,
Carbide and Carbon was to receive an
operator's fee of $75,000 per month
for full plant operation, and addition-
al payments as warranted. Although it
would shoulder principal responsibil-
ity for production activities, it did not
agree — as did Du Pont with the
plutonium plant and the Tennessee
Eastman Corporation with the elec-
tromagnetic plant — to serve as sole
operator of the gaseous diffusion
plant. Carbide officials did not want
responsibility for conditioning the
process equipment against the corro-
sive nature of the uranium hexafluor-
ide process gas, nor did they want the
potentially hazardous task of manu-
166
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
facturing the volatile fluorine gas
used for conditioning.
As an alternative, District officials
had arranged with Chrysler, already
under contract for manufacturing the
converter component of the diffusion
system, to do the conditioning. But
when Kellex and Army authorities
came to working out details of the
equipment contract with the automo-
bile firm, they learned that it lacked
the necessary facilities for fluorine
conditioning in its Detroit plant. Fol-
lowing months of delay, Manhattan
and Carbide officials resolved the
problem in November 1943. Based on
recommendations by Union Carbide,
Carbon and Carbide officials tempo-
rarily assigned responsibility for oper-
ating the conditioning facilities to the
building contractor. Ford, Bacon, and
Davis, and building and operating re-
sponsibility for the fluorine produc-
tion facilities to the Hooker Electro-
chemical Company. Up until early
1945, when Carbide and Carbon as-
sumed full operational control of
these facilities, this arrangement per-
mitted the prime operating contractor
to concentrate its efforts on the proc-
ess and power plants.
Preparations
During 1943, with gaseous diffu-
sion plant production activities on a
limited scale, the Manhattan District
monitored the work of the several op-
erating contractors through its K-25
Construction Division. When oper-
ations began to expand rapidly in early
1944, the district engineer established
a K-25 Operations Division, headed
by Maj. John J. Moran (Chart 3).
For months Moran's division func-
tioned with only eight officers and
five civil service employees. Then as
the main diffusion plant became oper-
ational in 1945, the division acquired
some additional personnel and, by
the fall of that year, was operating
with fourteen officers, nine enlisted
men, and twenty civil service employ-
ees. But this was a relatively small
staff to oversee the multifarious activi-
ties of a production plant that at the
peak of its operations employed more
than eleven thousand workers. It
proved adequate, however, because
Colonel Stowers, the K-25 unit chief,
employed the staff of the New York
Area Engineers Office, which he also
continued to head, to assume a con-
siderable part of the load of maintain-
ing liaison among the major compa-
nies involved in gaseous diffusion
operations.
In the spring of 1944, about the
time construction crews were com-
pleting the first cell in the main proc-
ess building. Carbide and Carbon
began setting up its production orga-
nization at the plant site. The firm
had been recruiting personnel for an
operating force since late 1943, but
with only limited success. And be-
cause recruitment difficulties also ex-
tended to supervisory and technical
positions, the district engineer even-
tually had to augment the K-25
technical staff with skilled personnel
from the District's Special Engineer
Detachment.^®
'® On specific problems in recruitment of supervi-
sory and technical personnel see Memo, Stowers to
Marshall, sub: K-25 Proj Requirements, 21 Jan 43,
Admin Files, Gen Corresp, 600 12 (Projs and
Prgms: K-25), MDR; MDH, Bk. 2, Vol. 5, pp. 2.1-
2.4, DASA.
Chart 3— Organization of the Manhattan District, January 1945
DISTRICT ENGINEER
DEPUTY DISTRICT ENGINEERS
EXECUTIVE OFFICERS
SPECIAL PROJECTS
EXECUTIVE ASSISTANT
WASHINGTON LIAISON
REPORTS S STATISTICS
SPECIAL STUDIES
SPECIAL STAFF
EXECUTIVE ASSISTANT
INTELLIGENCE S SECURITY
INTELLIGENCE. SAFEGUARDING
MILITARY INFORMATION t
\ BRANCH OFFICES
NAVAL DETACHMENTS
COORDINATOR
PRODUCTION
MADISON SOUARE AREA
Colorado
H3 S. St Lo
Alabama Ordnance Works
Morgantown Ordnance Works
Wabash River Ordnance Works
Delroit
Milwaukee
HANFORD ENGINEER WORKS
EXECUTIVE ASSISTANT
ADMINISTRATION
FISCAL BRANCH
ADMINISTRATIVE BRANCH
CONTRACTS S CLAIMS
Contracts & Procurement
Engmeenng
PRIORITIES S EXPEDITING
I GENERAL ACCOUNTING OFFICE ^
EXECUTIVE ASSISTANT
FOR
OPERATIONS
SAFETY BRANCH
MAINTENANCE t, UTILITIES
BRANCH
CLINTON ENGINEER WORKS
SERVICE BRANCH
Redistribution t, Salvage
Clinton Engineer Works
Redistribution & Salvage
Classified Material
Clinton Engineer Works
EXECUTIVE ASSISTANT
FOR
PERSONNEL
MILITARY PERSONNEL
Hanford Engineer Works
WASHINGTON REPRESENTATIVE
, US. Engrs OHice. Ml). 26 Jan 45. AcJniin Files.
iirrcsp. 020 (MED-Org). MDR.
THE GASEOUS DIFFUSION PROCESS
167
As newly recruited workers report-
ed in, Carbide and Carbon made
preparations for their orientation and
training. By October 1944, a suffi-
cient number of instructors and train-
ees were on hand to establish an op-
erations training center in a building
formerly occupied by the local public
school. At the start, the center's cur-
riculum consisted of two major cours-
es: process training and vacuum test
training. Later, courses were added
for process maintenance men and in-
strument mechanics. In the begin-
ning, only men were enrolled, but the
continuing shortage of workers com-
pelled Carbide and Carbon to recruit
a large number of women as process
operators. After employees had re-
ceived more than eighty hours of
formal classroom training, they un-
derwent a period of on-the-job train-
ing before final assignment to an op-
erating position.
In August 1944, some new workers
had the opportunity to acquire practi-
cal experience on the operation of the
54-stage pilot plant, an experimental
unit located at the base of the U in the
main process building. The barrier
tubes were not yet available, so the
cell stages were fitted with steel ori-
fices instead of converters. This
meant, of course, that no isotope sep-
aration could occur. But, using either
nitrogen or "test fluid," ^^ the opera-
^^ "Test fluid," the chemical compound n-per-
fluoroheptane (CtFis) project chemists had devel-
oped for process building test runs, was a nonhy-
drogenous gaseous material with characteristics
similar to the process gas, uranium hexafluoride,
except that it was noncorrosive. During test oper-
ations in the first three buildings, however, C7F16
exhibited a number of technical deficiencies. Conse-
quently, in February 1945, project chemists decided
to discard it in favor of using the process gas in
final test runs, realizing that the latter — although
highly corrosive — would provide the same test infor-
tor trainees simulated actual plant op-
erations and plant managers were
able to develop operating techniques,
provide realistic training for foremen
and key operators, and test perform-
ance of seals, pumps, and valves. In
January 1945, Carbide moved all
training activities from outlying build-
ings to the 54-stage pilot plant.
Production Activities
By the end of 1944, J. A. Jones
construction crews were ready to turn
over the first 60 of the 402 stages of
Case I — the first major section of the
production plant. Jones employees
tested pumps, instruments, and other
equipment for operability in the pres-
ence of Carbide and Carbon repre-
sentatives, noting in an acceptance
report all deficiencies that would re-
quire adjustment, repair, or replace-
ment. Witnesses from both firms then
had to approve the report before a
completed plant section could be
turned over to the operating staff for
another series of tests preliminary to
actual production.
A typical preoperation test was to
make certain no leaks existed in the
process system, because the separa-
tion process would operate effectively
only under conditions approaching an
absolute vacuum, with an infinitesi-
mally small pressure buildup. SAM
Laboratories vacuum technicians and
Carbide and Carbon employees, all
specially instructed in detecting leaks,
worked together to carry out the deli-
cate preoperation test. The test teams
pumped down the process equipment
mation with a considerable savings in both time and
labor. See MDH, Bk. 2, Vol. 5, pp. 3.4-3.5, DASA.
168
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Completed Plant Section with corrugated steel sheathing
to a high vacuum and then played a
stream of helium water over every
welded joint, instrument, and valve. If
there were leaks, helium would enter
the system, where a mass spectrome-
ter would detect it. Some four hun-
dred to six hundred test personnel ul-
timately had to devote about eight
months to complete a check of the
whole gaseous diffusion plant.
As soon as a unit, or building, suc-
cessfully passed the leak-test require-
ments, plant operators prepared it for
a test run with regular process gas.
Before they could do this, however,
they had to make a thorough check
and calibration of all instruments and
carry out final conditioning of equip-
ment. The 130,000 instruments in the
main process area — probably up to
that time the largest number ever in-
stalled in a single production plant —
included many that were of special
design and development and some
that (for example, the mass spectrom-
eters) were extremely delicate and
complicated. Many, too, never before
had been used routinely in a commer-
cial-scale plant. Consequently, months
of painstaking testing, calibrating, and
checking were necessary before the
final steps to put the plant into
operation.
Units in the production plant cas-
cade began operating for the first
time on regular process gas in Febru-
ary 1945, testing procedures that sub-
sequently were employed throughout
the plant. The initial step was vapori-
zation of the feed material — solid ura-
nium hexafluoride from the Harshaw
Chemical Company in Cleveland — by
THE GASEOUS DIFFUSION PROCESS
169
subjecting it to a series of hot baths
to convert it into a gas. The feed ma-
terial then entered the process stream
in its gaseous form at any convenient
feed intake point and flowed through
the cascade of enriching stages.
Emerging from these stages, the proc-
ess gas went through a stripping sec-
tion that carried depleted gas from
the higher enrichment stages back to
the lower part of the cascade for
recirculation.
By early March, construction crews
had completed sufficient additional
cells to permit start-up of a two-build-
ing cascade. Unfortunately, on the
ninth, as the actual start-up procedure
began, nitrogen flooded the two-
building cascade, because a worker
had failed to close a valve in a bypass
line. But quick purging action by
plant crews soon cleared the system
and, by the twelfth, they not only had
the two-building cascade in partial
production but also had connected
two more buildings to the system. On
the twenty-fourth, the whole of Case I
went on stream. In the months fol-
lowing, Cases II through IV were fin-
ished at the rate of a case per month,
until in mid-August the full plant cas-
cade of 2,892 stages was in operation.
From the start, production results
were much better than anticipated,
despite occasional minor interrup-
tions because of equipment failures
and operational errors. ^° By May
1945, Cases I and II were turning
out a product containing 1 percent
U-235. In the following month, using
slightly enriched material from the
liquid thermal diffusion plant as feed.
^° For a detailed listing of these interruptions
during the period of getting the K-25 plant into full
operation in the spring and summer of 1945 see
ibid., pp. 8.4-8.7, DASA.
operators drew off some product con-
taining nearly 7 percent U-235. After
the full plant cascade went on stream,
product concentration increased to 23
percent. During the fall, the plant
demonstrated a productive capacity
far higher than its designers had pre-
dicted. Contributing to this increased
rate of output was a cell stream effi-
ciency and barrier performance great-
er than expected.
In early 1945, the District's Produc-
tion Control Committee, appointed
earlier by Colonel Nichols to coordi-
nate production by the diffusion proc-
esses and the electromagnetic proc-
ess, had worked out a plan to achieve
the maximum feasible output of
U-235. Based upon a careful analysis
of each process, the committee direct-
ed that K-25 would not be brought
into the production chain until it
demonstrated a capability of produc-
ing a product enrichment of 1.1 per-
cent. The K-25 plant attained the 1.1-
percent level in April, and project
workers began sending the output to
the electromagnetic plant for final en-
richment. At the same time, thermal
diffusion plant workers who had been
sending the plant's output to the rela-
tively inefficient Alpha I stage of the
electromagnetic plant now began de-
livering the entire product output to
K-25. Thus, the gaseous diffusion
process became an integral part of
the U-235 production chain and,
during the spring and summer of
1945, contributed substantially to
the manufacture of the fissionable
material used in the fabrication of
atomic weapons at the Los Alamos
Laboratory.
The Army's success in bringing the
vast and complex gaseous diffusion
170
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Completed Gaseous Diffusion Plant. The K-27 extension unit subsequently was
erected adjacent to Poplar Creek, at the upper right.
plant into full-scale production was to
a considerable extent due to its
having formed in the union of Kellex
and Carbide and Carbon an effective
organization with the requisite re-
sources, industrial knowledge, and
skilled personnel. Fortunately, during
most of the 1943-45 period when
first the K-25 plant and then its K-27
extension were being brought from
the draftsman's table to fully operat-
ing production units, the various
Kellex-Carbide elements functioned
together surprisingly smoothly and ef-
ficiently considering the unrelenting
pressure of time and the frustrations
created by all kinds of wartime short-
ages in material and manpower.
Inevitably, however, there were oc-
casional misunderstandings and per-
sonality conflicts that threatened to
disrupt the teamwork of the organiza-
tion. One such incident occurred in
June 1945, when Kellex was phasing
out participation in the project and
leaving primary responsibility for
plant operation to Carbide and
Carbon. At this time, a dispute arose
over the role of Kellex's strong-
minded executive in charge, Percival
Keith. The problem seemed to be
that Carbide officials thought Keith
was no longer devoting as much time
to gaseous diffusion as he should,
whereas Keith felt that he should be
the judge of how much of his time
should be spent on the project. After
exceptional effort on the part of Gen-
eral Groves and his staff, Keith yield-
ed to persuasion and agreed to stay
THE GASEOUS DIFFUSION PROCESS
171
on in an advisory capacity to assist
Carbide and Carbon in operating the
production plant.
Considered in terms of its ultimate
production capabilities, the gaseous
diffusion plant did not attain a signifi-
cant level of output until the fall of
1945, after World War II had ended.
This was not the result of poor plan-
ning or a failure to fulfill, in the main,
established construction and produc-
tion schedules. Rather it stemmed
from the fact that when Groves and
the other leaders of the atomic energy
program were working out the plans
for the plant in 1943, the consensus
of opinion was that the war against
Japan would last at least until mid-
1946. Had this been the case, the
K-25 plant would have attained the
level of maximum output at the time
when U-235 would be needed in
large quantities for the weapons fabri-
cation program. Events, of course, did
not unfold quite as the atomic project
planners had anticipated, and the war
ended in August 1945. Consequent-
ly, full-scale operation of K-25 and its
K-27 extension constitutes an episode
in the immediate postwar history of
the Manhattan Project rather than its
wartime aspect. In this postwar period,
the great industrial complex so hur-
riedly designed, erected, and placed in
operation, employing largely inexperi-
enced personnel working under far
from favorable conditions, demon-
strated that it was the most efficient
and productive of all the process
plants built to manufacture U-235.
Shortly after the war was over, the
Manhattan District shut down the
liquid thermal diffusion plant and the
Alpha units of the electromagnetic
plant. But the gaseous diffusion plant
continued in operation as the basic
source of U-235 for the entire atomic
project. And in the postwar era, the
great plant at the bend of the Clinch
River became the prototype for new
facilities built elsewhere in the United
States to increase output of U-235,
and also for the production units built
in other countries to manufacture fis-
sionable uranium for atomic energy
programs. ^^
^'See Ch. XXV'III on the closing down of the
liquid thermal diffusion plant and the Alpha units of
the electromagnetic plant.
CHAPTER VIII
The Liquid Thermal Diffusion
Process
Leaders of the atomic energy pro-
gram had decided against large-scale
development of the liquid thermal
diffusion process in early 1943, partly
because they judged the process in-
feasible and partly because transfer of
a Navy project to the Army-directed
Manhattan Project was likely to result
in major administrative and security
problems. By the spring of 1944,
however, significant progress in ther-
mal diffusion research — coupled with
the threat of not reaching the requi-
site production level of fissionable
uranium because of delays in getting
the electromagnetic and gaseous dif-
fusion plants into full operation —
opened the way for serious reconsid-
eration of this method as a means for
providing a supplementary supply of
partially enriched material for the Los
Alamos Laboratory weapon program.
Research and Development:
The Role of the Navy
One advantage of the liquid ther-
mal diffusion method of separating
isotopes was its relative simplicity.
When a liquid containing isotopes of
a given element is placed in the annu-
lar space between two vertical con-
centric receptacles, the inner one
heated and the outer one cooled,
thermal diffusion — that is, the passage
of heat from the hot to the cold
wall — tends to concentrate lighter iso-
topes near the hot wall and heavier
isotopes near the cold wall and, si-
multaneously, because of convection,
to carry the hotter liquid upward and
the cooler fluid downward. The result
is accumulation of lighter isotopes at
the top of the receptacle and heavier
isotopes at the bottom, thus permit-
ting extraction of both fractions.
This method, first tested in the late
1930's by German scientists using
zinc salts dissolved in water, had pro-
duced a small amount of separation;
however, the phenomenon remained
a little-known scientific curiosity until,
in 1940, wartime events precipitated
intensive research by American scien-
tists to secure the fissionable materi-
als necessary for the atomic project.
In Washington, D.C., chemist Philip
H. Abelson of the Carnegie Institu-
tion and physicist-technical adviser
Ross Gunn of the Naval Research
Laboratory simultaneously sought fi-
nancial support from the government
for a liquid thermal diffusion research
THE LIQ.UID THERMAL DIFFUSION PROCESS
173
program. Abelson, who had worked
with chemist Glenn Seaborg on pluto-
nium chemistry at the University of
California, Berkeley, wrote to Urani-
um Committee Chairman Lyman
Briggs at the National Bureau of
Standards and described how urani-
um isotopes might be separated by
thermal diffusion, and Gunn, also a
member of the Uranium Committee,
passed on to other committee mem-
bers his own interest in the potentiali-
ties of the process. Acting on Briggs's
suggestion, the Navy decided to sup-
port research in hopes that it might
provide fuel for a nuclear power plant
suitable for submarines.
Abelson started his research at the
Carnegie Institution, but in October
1940 moved his experiments to the
Bureau of Standards. Then in June
1941, at Gunn's suggestion, Abelson
became an employee at the Naval Re-
search Laboratory, which had been
providing funds for his experiments
since September 1940, and shifted his
equipment to that institution. Using
36-foot columns consisting of two
vertical concentric pipes, the inner
carrying hot steam and the outer
process liquid, Abelson began actual
tests with uranium hexafluoride, a
compound so little known at the time
that he had to devise his own method
for producing the substance in quan-
tity. Results were disappointing at
first; however, by changing the spac-
ing between the hot and cold walls of
the columns, Abelson was able to
demonstrate that a separation factor
as high as 21 percent could be
achieved and an equilibrium separa-
tion could be attained in about two
days.^
In August 1942, when Abelson's re-
search had progressed to the stage
where he needed a pilot plant to as-
certain the feasibility of operating a
large-scale plant, the Navy undertook
the task of building the first thermal
diffusion pilot plant at its Anacostia
Station near the Naval Research Lab-
oratory facilities. Completed by No-
vember, the original pilot plant con-
sisted of five (later others were
added) 36-foot columns and the req-
uisite pumps, piping, and other
equipment; a recently installed 20-
horsepower gas-fired boiler provided
the necessary steam. From the start of
operations in December, the plant
proved amazingly reliable, running
for days at a time with scarcely any at-
tention from the operating staff.
Then in early 1943, the staff discov-
ered that greater operational efficien-
cy resulted from increasing the tem-
perature of the hot wall. Although the
higher temperature complicated
design because of the high pressures
required for hotter steam, it largely
overcame the excessively long equilib-
rium time required for the plant to
reach the stage of producing signifi-
cant amounts of U-235.
' On the early history of the Hquid thermal difTu-
sion method see Progress Rpt, Philip H. Abelson,
sub: Liq Therm DifT Research (Rpt 0-1977), 5 Jan
43, Admin Files, Gen Corresp, 600 12 (Therm DifT
Proj), MDR: MI^H, Bk. 6, Sec. 2, "Research and De-
velopment," pp. 2.1-2.4, DASA, Hewlett and An-
derson, \eu' World, pp. 32 and 168-70; Smyth
Report, p. 47.
174
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Reassessment: Decision for Full-scale
Development
For a time in late 1942, the liquid
thermal diffusion method appeared to
have been eliminated from further se-
rious consideration for the atomic
weapon program. In September, Gen-
eral Groves and Colonel Nichols had
visited the Naval Research Laboratory
and had talked to Gunn, but the small
size of the project and the apparent
lack of urgency of its developmental
program had left the Manhattan com-
mander unimpressed. Groves, too, re-
called that Vannevar Bush, director of
the Office of Scientific Research and
Development, had just told him that
in March President Roosevelt had di-
rected that the Navy be excluded
from the S-1 program. Yet in late No-
vember, the S-1 Executive Committee
reassessed all of the more promising
methods for mass production of fis-
sionable materials and, at the last
moment, decided to include Abel-
son's project in its review.^
General Groves and the S-l's reas-
sessment group, the Lewis reviewing
committee headed by MIT Professor
Warren K. Lewis, visited the Naval
Research Laboratory on 10 December
and were sufficiently impressed with
Abelson's progress to recommend
continued support of the thermal dif-
fusion project. Bush took steps to get
continued support from the Navy,
channeling his efforts through Rear
Adm. William R. Purnell of the Mili-
tary Policy Committee to avoid con-
flict with the President's directive to
keep the Navy out of the S-1 project.
Purnell had Abelson's latest scientific
reports sent to S-1 Committee Chair-
man James B. Conant, who turned
them over to the S-1 Executive Com-
mittee. An S-1 subcommittee, com-
prised of Lyman Briggs, Eger V.
Murphree, and Harold C. Urey, re-
viewed the reports and visited the
Navy project. On 23 January 1943,
they informed Conant that "the Naval
Research Laboratory . . . [had] made
excellent progress in the separation
of isotopes by liquid thermal diffu-
sion . . . ," ^ but expressed concern
over the lack of solid production data
and the excessive length of the equi-
librium time. Consequently, the sub-
committee limited its recommenda-
tion to suggesting that a commercial
organization be invited to prepare
preliminary designs for a production
plant, a stage of development that the
gaseous diffusion and centrifuge
projects had attained nearly a year
earlier. But two days later Murphree
reviewed his own estimate of Abel-
son's project and proposed that the
Manhattan leaders consider substitut-
ing liquid thermal diffusion for gase-
ous diffusion in the lower stages of a
U-235 separation plant. ^
At the beginning of February, Gen-
eral Groves submitted the various
proposals concerning thermal diffu-
sion and the reports from Abelson to
the Lewis reviewing committee. After
due consideration the committee sug-
^Ltr, Briggs, Murphree, and L'rev to Conant,
23 Jan 43, Admin Files, Gen Corresp, 600.12
(Therm Diff Proj), MDR; Marshall Diary, 21 Sep 42,
OCG Files, Gen Corresp, Groves Files, Misc Recs
Sec, behind Fldr 5, MDR; Groves, \ow It Can Be
Told. p. 23; Hewlett and Anderson, Sew World, pp.
169-70.
^Ltr, Briggs, Murphree, and Urey to Conant,
23Jan43. MDR.
■•Memo, Nichols to Groves, 20 Jan 43, Admin
Files, Gen Corresp, 319.1 (Liq Therm DifT), MDR;
Hewlett and Anderson, Xew World, p. 171 (based on
Ltr, Murphree to Briggs, 25 Jan 43, OSRD).
THE LIQUID THERMAL DIFFUSION PROCESS
175
gested continuing with a limited pro-
gram of research and preliminary en-
gineering designs. The S-1 Executive
Committee accepted this recommen-
dation on the tenth, and another
review by Lewis, Briggs, Murphrec,
and Urey toward the end of the
summer resulted in essentially the
same recommendation.^
From September 1942 until April
1943, there was an almost complete
loss of contact between the Navy pro-
gram and the Manhattan Project. This
temporary exclusion from the main
arena of atomic energy activities did
not, in the long run, seriously impede
continued development, although
Groves's refusal in October to ap-
prove Abelson's request for addition-
al supplies of uranium hexafluoride
momentarily threatened the program.
Groves soon relented, however, when
Navy officials reminded him that
Abelson was the scientist who had de-
vised the process for producing large
quantities of uranium hexafluoride.
Abelson needed the increased quanti-
ties of the compound for the three-
hundred-column high-pressure pilot
plant he planned to build at the Phila-
delphia Navy Yard, where there was
an adequate supply of steam avail-
able. The Navy finally authorized con-
struction of the new plant in Novem-
ber and work started on a one-hun-
n.tr, C. H. Greenewalt (TNX Tech Div chief. Du
Pont) to Groves. 8 Feb 43, Admin Files, Gen Cor-
resp, 600.12 (Therm DifT Proj). MDR; Hewlett and
Anderson, Xeu' World, pp. 171-72; Rpt, Murphree
and Urey, sub: Prgm for Experiments To Be Car-
ried Out on Therm Diff Method, 19 Feb 43, Admin
Files, Gen Corresp, 319.1 (Liq Therm Difi). MDR;
Ltrs, Briggs, Urey, Murphree, and Lewis to Conant,
8 Sep 43, and Conant to Purnell, 15 Sep 43, Admin
Files, Gen Corresp, 334 (Mil Policv), MDR.
dred-column segment in January
1944.6
The final impetus for full-fledged
development did not come from the
Army or the S-1 Committee, but
from that element most vitally con-
cerned with obtaining an early and
adequate supply of fissionable mate-
rials: the Los Alamos Laboratory.
In particular. Laboratory Director
J. Robert Oppenheimer was constantly
on the alert for any means that gave
promise of speeding up large-scale
production of fissionable materials. At
a time when the electromagnetic plant
at the Clinton Engineer Works was
just beginning to produce a sizable
amount of enriched uranium and
completion of the gaseous diffusion
and plutonium production plants still
was many months away, Oppen-
heimer reviewed certain fragmentary
data received earlier on the thermal
diffusion project. His information in-
cluded two nearly year-old reports by
Abelson and some oral reports re-
ceived from Capt. William S. Parsons,
the naval officer in charge of ord-
nance at Los Alamos.
Parsons had just returned from a trip
to the East, during which he had made
inquiries about the pilot plant under
construction at Philadelphia. He had
learned that the plant was scheduled
to begin operating on 1 July, using
one hundred columns to produce an
estimated 5 grams per day of an en-
riched product containing 5 percent
U-235. Oppenheimer knew that par-
tially enriched material in such small
quantities would not begin to fulfill
the requirements of the atomic
^Hewlett and Anderson, Xnt' World, pp. 171-72;
MDH, Bk. 6, Sec. 2, pp. 2.4 and 2.9, DASA; Smvth
Report, p. 147
176
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
project; however, the thought oc-
curred to him that if the one hundred
columns of the plant could be con-
nected in parallel rather than as a
fractionating pyramid, they might be
made to produce something like 12
kilograms a day of an enriched prod-
uct containing about 1 percent U-235.
And this output would be tripled
if Abelson carried out his plan to
erect a total of three hundred col-
umns, the number that could be oper-
ated on the steam available at the
Philadelphia Yard. On 28 April, Op-
penheimer wrote to Groves that de-
velopment of the thermal diffusion
process to provide partially enriched
uranium feed for the electromagnetic
process would give "hope that the
production of the Y-12 [electromag-
netic] plant could be increased by
some 30 or 40 percent, and its en-
hancement somewhat improved, many
months earlier than the scheduled
date for K-25 [gaseous diffusion]
production." ^
Groves did not reply immediately.
In later years he stated he did not
know why he or someone else had
not suggested thermal diffusion as a
feeder process for the electromagnet-
ic plant at least a year before; per-
haps, he conjectured, this occurred
because everyone at first had thought
of using a single process to achieve a
final product enrichment and, as a
single production system, thermal dif-
fusion had certain technical draw-
backs. But by August 1943, Manhat-
tan leaders had adopted the feeder
concept for the gaseous diffusion
plant, proposing to use its output to
feed the Beta cycle, and in this new
context they were then able to per-
ceive the potentialities of thermal
diffusion.®
Unquestionably, too, development
by an organization outside the Army-
administered Manhattan District was
an important factor contributing to
the delay. For this reason it did not
attract the active interest of most of
the scientists and engineers who orga-
nized the bomb project, and the Army
administrators feared security prob-
lems from bringing outside agencies
into the Manhattan Project. That the
latter consideration created at least
some reservation in Groves's mind as
to the feasibility of Oppenheimer's
suggestion seems borne out by the
fact that the Manhattan commander,
who was not characteristically a man
to allow grass to grow under his feet,
let a whole month pass before acting
upon it. Finally, on 31 May 1944,
Groves appointed a committee con-
sisting of Lewis and Murphree, who
had previously investigated the Navy
project, and physicist Richard C.
Tolman, who was serving as his scien-
tific adviser. This committee con-
firmed Oppenheimer's information,
except they found his prediction re-
garding the potential output of the
one-hundred-column plant overly op-
timistic. Groves informed Oppen-
heimer that he did not know yet
whether the Manhattan District would
avail itself of the Navy's facilities but
that "arrangements have been made
for this eventuality if it should be
desirable." ^
' Ltr, Oppenheimer to Groves, 28 Apr 44, Admin
Files, Gen Corresp, 600.12 (Therm DifTProj). MDR;
Oppenheimer Hearing, pp. 164-65.
^ Oppenheimer Hearing, pp. 119-20.
^ Ltr, Groves to Oppenheimer, 3 Jun 44. See also
Memos, Groves to Lewis, Murphree, and Tolman,
Continued
THE LIQIHD THERMAL DIFFUSION PROCESS
177
• \ F . .^
Richard C. Tolman {1945 photograph)
On 5 June, Groves sent Conant and
Lewis to District headquarters to
confer with Colonel Nichols concern-
ing the practical feasibility of using
the Navy pilot plant at Philadelphia
and constructing a thermal diffusion
plant at the Tennessee site, employ-
ing steam available from the K-25
powerhouse. The two scientific lead-
ers ultimately concluded the thermal
diffusion plant "would probably be a
feasible [and] desirable adjunct to the
Y-12 process." ^«
Then on the twelfth. Groves re-
quested that Murphree, who had ex-
tensive industrial experience, make a
sub: Possible Utilization of Navy Pilot Therm DifT
Plant, 31 May 44, and Lewis, Murphree, and
Tolman to Groves, same sub. 3 Jun 44. All in
Admin Files, Gen Corresp. 600.12 (Therm DifT
Proj), MDR.
'"Memo, Nichols to Groves, 11 Oct 44, Admin
Files, Gen Gorresp, 600.12 (Projs and Prgms),
MDR. See Ch. XV'III for a detailed description of
the K-25 powerhouse.
Study to determine the cost, construc-
tion time, and amount of high-pres-
sure steam needed for a thermal dif-
fusion plant capable of producing 50
kilograms a day of enriched uranium
with concentrations of U-235 ranging
from 0.9 to 3.0 percent. Murphree
asked Tolman and the scientists Karl
P. Cohen and W. L Thompson, both
of whom had participated in previous
investigations of the Navy project, to
assist him in making the study. They
concluded that the 1.25-million
pounds per hour of steam that the
K-25 powerhouse (with some modifica-
tions) could supply would be approxi-
mately sufficient to operate a thermal
diffusion plant of sixteen hundred
tubes, costing about $3.5 million, and
capable of enriching 50 kilograms of
uranium a week to slightly less than
0.9-percent concentration.^^
Groves decided on 24 June to go
ahead with construction. Such a plant
promised to be relatively cheap. It
could use the already available steam
capacity at the gaseous diffusion plant
site at least for several months, pend-
ing completion of the K-25 cascade.
While its product would contain only
about 20 percent more U-235 than
natural uranium, this enrichment
would be translated into a vital 20-
percent-greater output by the electro-
magnetic plant. But Groves decided
against the recommendation to in-
clude the existing Navy facilities, be-
*'Ltr, Murphree to Groves, 22 Jun 44. See also
Rpt, Thompson and Cohen, sub: Process Design for
Liq DifT Plant. 17 Jun 44; Rpt, Thompson and
Cohen, Sub: Rough Prelim Estimate of Plant Cost,
19 Jun 44; Ltrs, Tolman to Groves, subs: Further
Info as to Steam C^apacitv at Tenn., 19 Jun 44, and
Still Later Info as to Steam Capacity at lenn.,
20 Jun 44. All in Admin Files, Gen Corresp, 319.1
(Liq Therm Difl), MDR.
178
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
cause the Navy installation would not
be under direct control of the Army
and because he was convinced that
the Manhattan District would build
the thermal diffusion plant more
quickly if it were not diverted by the
problems of operating the Navy plant.
Both Groves and Nichols held to the
view that the key factor was getting
the plant into operation at the earliest
possible date to fill the anticipated
gap between the time the electromag-
netic plant reached full capacity and
the gaseous diffusion plant began
producing large quantities of en-
riched uranium feed.^^
Plant Design, Engineering, and
Construction
The need for exceptional speed in
both design and construction of the
thermal diffusion plant, designated
S-50 for security reasons, was an im-
portant consideration in Groves's se-
lection of the H. K. Ferguson Com-
pany as the prime contractor. In earlier
defense projects, the Manhattan com-
mander had been greatly impressed
with the Cleveland firm's ability to
complete a job on schedule. Against
the advice of his advisers, who
thought six months was an optimistic
schedule, Groves determined that the
plant must be in full operation in four
months. Furthermore, the first pro-
duction unit should begin operating
only seventy-five days after start of
construction. Groves offered the
high-pressure services of Manhattan's
Washington Liaison Office for expe-
diting procurement; instructed the
company to place its orders without
competition and by wire or tele-
phone, using wherever practicable the
same manufacturers who had supplied
equipment for the Navy pilot plant;
and ordered that plant components
be identical copies of those developed
for Abelson's project. ^^
To further ensure that Ferguson
would have access to all available as-
sistance the Army could provide,
Colonel Nichols in June 1944 estab-
lished an S-50 Division in the Man-
hattan District office. {See Chart 3) He
assigned Lt. Col. Mark C. Fox as unit
chief for the thermal diffusion project
and Maj. Thomas J. Evans, Jr., as his
assistant, with special responsibility
for overseeing plant construction. In
anticipation of the need for special
measures to enable Ferguson and its
subcontractors to successfully carry
out the extraordinarily demanding
terms of the S-50 contract. Colonel
Fox organized an Expediting Branch
in the division, which functioned
through District procurement officers
in industrial centers throughout the
United States.^''
With only a few weeks in which to
complete blueprints and let procure-
ment contracts, the Ferguson Com-
pany had no alternative but to adhere as
closely as practicable to the Naval Re-
search Laboratory design. Ferguson
engineers visited the laboratory and
the Navy turned over to them all of
the drawings and blueprints needed
^^Memo, Nichols to Groves, 11 Oct 44, Admin
Files, Gen Corresp, 600.12 (Projs and Prgms),
MDR; Groves, Sow It Can Be Told. pp. 120-21.
"Groves, Xow It Can Be Told. p. 121; MDH, Bk. 6,
Sec. 3, "Design and Construction," pp. 3.15-3.17,
DASA.
'■•MDH, Bk. 6, Sec. 6, "Organization and Person-
nel," p. 6.2, DASA; Org Chart, U.S. Engrs Office,
MD, 28 Aug 44, Admin Files, Gen Corresp, 020
(MED-Org), MDR. When Colonel Fox was assigned
to another part of the Manhattan Project in March
1945, Major Evans replaced him as S-50 unit chief.
THE LIQUID THERMAL DIFFUSION PROCESS
179
for construction of the columns and
racks. They modified Navy designs
and developed new ones for certain
elements of the auxiliary equipment
only to the extent necessary to meet
the different conditions existing at the
Tennessee location. To save time
they based much of the construction
on simple field sketches, postponing
completion of detailed drawings until
after the plant was built. ^^
As laid out in the Ferguson engi-
neers' designs, the plant consisted of
2,142 columns, each 48 feet in height,
distributed in twenty-one racks. ^^
Each of the columns had three con-
centric tubes, comprised of a 1 Vi-inch
nickel pipe inside; a slightly larger
copper pipe in the middle; and a
4-inch galvanized iron jacket on the
outside. In the small (one one-hun-
dredth of an inch) annular space be-
tween the outer wall of the nickel
pipe and inner wall of the copper
pipe the diffusion process would
occur. Steam, under a pressure of 100
pounds per square inch and at a tem-
perature of 545 degrees Fahrenheit,
would circulate downward through
the nickel pipe while water at 155 de-
grees Fahrenheit would flow upward
through the iron jacket; simultaneous-
ly, uranium hexafluoride would flow
into the base of each column from a
reservoir, specially designed to main-
tain at the bottom of each column a
concentration of LI-235 approximat-
ing that in natural uranium. Designed
into the top of each column was a
system of freezing coils; this feature
eliminated the need for complicated
mechanical valves, and would permit
'^MDH, Bk. 6, Sec. 3, p. 3.6. DASA.
'®Thi.s and following paragraph based on MDH,
Bk. 6, Sec. 4, "Description of Plant," pp. 4.1-4.5,
DASA.
plant employees to draw off small
amounts of the enriched product at
frequent intervals.
All the racks, each with 102 col-
umns, occupied a single main process
building, a huge black structure 522
feet long, 82 feet wide, and 75 feet
high. Running the full length of the
west side of this building was a mez-
zanine partitioned into eleven control
rooms, one for each two racks, and an
equal number of transfer rooms con-
taining process equipment for supply-
ing feed material and removing en-
riched product and depleted uranium
hexafluoride from the columns. The
engineers designed the final rack with
separate control and transfer rooms
so that it could be used for employee
training and experimental work.
On 9 July 1944, Ferguson workers
began clearing the S-50 plant site in
the area adjacent to the K-25 power-
house. In less than three weeks they
had completed foundations for the
main process building and by mid-
August were installing the process
equipment. Pipe fitters and welders
concentrated on the major task of
erecting the twenty-one racks of col-
umns during September and October.
Test operations, however, soon re-
vealed that many of the columns
leaked at the top and bottom and
would require additional welding; yet
in spite of this delay, all racks were
ready for start-up operations by Janu-
ary 1945 and became fully operation-
al by mid-March. In the meantime,
the District had closed out the Fergu-
son construction contract, assigning
completion of subcontracts for re-
maining insulation and electrical sys-
tem work to other firms available in
the Clinton area. These subcontrac-
180
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
tors also completed auxiliary build-
ings, including a new S-50 steam
plant to supplement the K-25
powerhouse. ^^
Plant Operation
Because time was so short, and to
avoid endangering security by bring-
ing in yet another outside firm. Gen-
eral Groves insisted that the H. K.
Ferguson Company also operate the
plant. ^^ At first Ferguson officials ob-
jected, stating that as an engineering
construction company it maintained a
closed shop and, therefore, could an-
ticipate union trouble on its other
wartime jobs if it attempted to carry
on a nonunion operation at the Clin-
ton Engineer Works, where security
regulations prohibited employee
unions. But District representatives
soon overcame this objection by re-
sorting to a corporate fiction similar
to that which had worked so well with
the M. W. Kellogg Company on the
gaseous diffusion project. They per-
mitted Ferguson to form a wholly
owned subsidiary, designated the Fer-
cleve (from the words Ferguson and
Cleveland) Corporation. Fercleve then
accepted a letter contract on 1 July
(and a formal contract in late 1944),
according to which it would procure
supplies and materials; train person-
nel; and inspect, supervise, and oper-
ate the thermal diffusion plant in
"Ibid., Sec. 3, pp. 3.18-3.20, DASA. To equip
this boiler plant, the District acquired twelve surplus
boilers from the Navy, fabricated for use in destroy-
er escort vessels, and the Washington Liaison Office
secured a number of 25,000- and 482,000-gallon
tanks from excess Army stocks.
^* Except as otherwise indicated, section based on
ibid.. Sec. 5, "Operations," DASA; Org Chart, U.S.
Engrs Office, MD, 10 Nov 44, MDR. See also
Groves, \'ow It Can Be Told, p. 120, n. 8.
return for a fee of $11,000 a month.
To monitor the Fercleve contract,
Colonel Fox established an Oper-
ations Branch in the S-50 Division.
While Fercleve wasted no time in
taking steps to set up an operating
organization, its late start presented it
with some difficult problems. When
company personnel officials attempt-
ed to recruit an operating force, they
found the other plants had already
cut deep into the local labor market.
And they could not offer housing on
the reservation, a main inducement
used by the other operating compa-
nies. Problems also arose in Fer-
cleve's efforts to train operators. As a
beginning step, the company sent
four of its own employees and ten en-
listed men from the Manhattan Dis-
trict's Special Engineer Detachment
to Philadelphia to receive training
from Abelson. This group acquired
some experience in conditioning tech-
niques but learned little about oper-
ations because the Navy plant was not
yet completed. Then, on 2 Septem-
ber, an explosion wrecked a large
part of the Navy pilot plant, injuring
several of the trainees. This unfortu-
nate incident not only ended the ini-
tial training program but also raised
for a time some severe doubts con-
cerning the design of the Clinton
plant. Subsequently, however, Abel-
son and fifteen of his experienced
staff moved to the Tennessee site,
where they gave valuable assistance,
first in conditioning the production
plant and then in getting it into
operation. ^^
In spite of recruiting difficulties,
Fercleve by April 1945 had an operat-
'9 Groves, \ow It Can Be Told, p. 122.
THE LIQUID THERMAL DIFFUSION PROCESS
181
Liquid Thermal Diffusion Plant (long, dark building) at CEW. The adjacent K-25
power plant drew water from the Clinch River.
ing force, exclusive of military per-
sonnel, of about 1,600 at the Clinton
Engineer Works. In addition, Special
Engineer Detachment enlisted per-
sonnel, comprised primarily of men
trained in engineering or science,
served as operators and supervisors
in the plant, their number reaching
a total of 126 at the height of
operations.
While plant construction was still in
progress, Fercleve crews began condi-
tioning Rack 21 for start-up oper-
ations. When they opened the valves
to let high-pressure steam from the
K-25 power plant flow into the rack,
great quantities escaped with an ear-
splitting noise, and parts of the rack
were soon shrouded in hot vapor.
Under ordinary conditions such clear-
ly demonstrated indications of defec-
tive equipment would have resulted in
an immediate shutdown. But faced
with Groves's insistence that the first
units must be in operation by early
fall, Fercleve's plant manager had no
choice but to proceed with start-up
activities. Consequently, in the last
months of 1944, operating personnel
pressed ahead with start-up of addi-
tional racks, and soon plant employ-
ees came to accept the noise of escap-
ing steam, accompanied by great
clouds of vapor, as almost normal op-
erating conditions.
There can be little doubt that the
haste to get into production increased
already inherent operating hazards in
the thermal diffusion plant. In the
confined spaces of the diffusion col-
umns, high-pressure steam and urani-
um hexafluoride, which expanded 35
182
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
« FERCLEVE FIREPOWER^
Billboard at the S-50 Plant Site
percent in passing from a solid to a
liquid, created highly explosive
forces. During the period of full oper-
ation, the plant did have a somewhat
higher accident rate than the other
Manhattan production units, but the
incidence of really serious accidents
was not as great. Most were attrib-
utable to lack of training and the
inevitable confusion occasioned by
construction and operating crews hav-
ing to work in the same area
simultaneously. ^°
During the first months there were
times when results scarcely seemed to
justify the risks. The combined disad-
vantages of largely inexperienced per-
sonnel and numerous equipment defi-
ciencies seemed to forebode many
months of low output and work stop-
pages before the plant attained an ac-
ceptable level of production. Thus,
Colonel Nichols reported to General
Groves that total output in October
1944 was only a token 10.5 pounds of
uranium containing 0.852 percent
U-235. While production increased to
171.8 pounds in November, it fell
back to 20 pounds the following
month, when steam leaks forced nu-
merous shutdowns. With six racks in
operation during the first half of Jan-
uary 1945, production for the first
time approached predicted levels, but
shutdown of some of the K-25 steam
units for repairs in the last half of the
month reduced output again. Febru-
ary production reached a total of
3,158 pounds in spite of an inad-
equate steam supply — an anticipated
deficiency eventually overcome
through the prompt construction of
the S-50 steam plant. In the spring
and early summer of 1945, plant
output went up rapidly, reaching a
peak of 12,730 pounds in June. It
dropped back briefly in July because
of the changeover to the S-50 steam
plant, but by that time the thermal
diffusion process had served its pur-
pose for the wartime program. The
slightly enriched material it pro-
duced— sent first to the electromag-
netic plant for further enrichment and
then, beginning in late April 1945, di-
rectly to the gaseous diffusion plant —
added enough to the total output of
U-235 to guarantee a sufficient
amount for one bomb of an appropri-
ate design by the end of July. ^^
Operational studies made after the
surrender of Japan in August 1945
showed that, except in an emergency,
the gaseous diffusion plant, which was
^° For data on injury rates on the thermal diflu-
sion project as compared with those on the other
CHnton projects see MDH. Bk. 6. App. D8, DASA.
See also Ch. XX.
2 1 Dist Engr, Monthly Rpts on DSM Proj, Jul 44-
Jul 45, passim, OCG Files, Gen Corresp, MP Files,
Fldr 28, Tabs A and B, MDR; Smvth Report, p. 147;
Hewlett and Anderson, Sew HorW, pp. 299-301.
THE LIQUID THERMAL DIFFUSION PROCESS
183
just approaching full production,
could henceforth handle the lower de-
grees of enrichment alone and do it
more economically than the thermal
diffusion plant. Consequently, operat-
ing crews made preparations for shut-
ting down the thermal plant. After
continuing in production long enough
to extract the last product from mate-
rial remaining in the columns, the
plant ceased operating on 9 Septem-
ber 1945, less than a year after its
first unit had started up in the fall of
1944.22
22 Dist Engr, Monthly Rpt on DSM Proj, Sep 45,
OCG Files, Gen Corresp, MP Files, Fldr 28, Tab B,
MDR.
CHAPTER IX
The Pile Process
Of the three fissionable materials
production processes (electromag-
netic, gaseous diffusion, and pile)
endorsed by the Military Policy Com-
mittee in 1942 for full-scale develop-
ment, the greatest gamble of all
appeared to be the pile method, pri-
marily because of a number of diffi-
cult technical problems facing project
scientists.^ Experimentation with re-
search piles at the University of Chi-
cago's Metallurgical Laboratory had
revealed that plutonium production
on a large scale would require the
design and engineering of special
process techniques and equipment to
cope with radioactivity and energy,
mostly in the form of heat, more in-
tense and pervasive than ever before
encountered in an industrial process.
Similarly, investigations into the
chemical separation of plutonium
from the transmutation residual of
natural uranium and highly radioac-
1 MPC Rpt, 15 Dec 42, OCG Files, Gen Corresp,
MP Files, Fldr 25, Tab B, MDR. The original nucle-
ar reactor that Fermi and his scientific colleagues
constructed at the University of Chicago's Stagg
Field in late 1942 consisted of a cubic lattice of
lumps of uranium and graphite piled one layer upon
another. Hence, the structure came to be called a
pile, a convenient designation for reasons of securi-
ty because it did not reveal the purpose of a chain-
reacting system. The term nuclear reactor did not
come into general use until after the end of World
War II.
tive fission products had demonstrat-
ed that there were still many unan-
swered questions as to the best way
to carry out this ancillary phase of
plutonium production.
The Military Policy Committee had
taken these problems into account
when it decided in December to pro-
ceed with mass production of plutoni-
um. Several factors contributed to
this affirmative decision. The commit-
tee was much impressed by the
progress of research and development
in the plutonium process at the Met-
allurgical Laboratory and elsewhere,
and also was convinced that the vast
potential of the process warranted the
undoubted risks inherent in its devel-
opment. From a military standpoint,
project scientists told the committee,
the process would produce not only
fissionable material for an atomic
weapon but also, as a by-product, ra-
dioactive fission materials that prob-
ably could be utilized as an exception-
ally deadly chemical warfare weapon.
Even if the scientists and engineers
failed to develop the process in time,
the plutonium pile with its enormous
capabilities for producing heat could
become a major source of power for
peacetime uses. Given all of these
considerations, the Military Policy
THE PILE PROCESS
185
Committee could see no alternative to
continuing full-scale development of
the process.
Research and Development: Metallurgical
Laboratory
Following consolidation of most
plutonium research and development
at the Metallurgical Laboratory in
February 1942, Director Arthur
Compton formed an organization that
consisted of an engineering council,
headed by chemical engineer
Thomas V. Moore from industry,
and nine major divisions — physics,
theory, technical, chemistry, pilot
plant, fast neutron, clinical-biological
(subsequently health) physics, defense
measures, and engineering.^ One of
^Section on Metallurgical Laboratory based on
Org Chart attached to Rpt, Capt Arthur V. Peter-
son, sub: Visit to Chicago Proj, 29 Sep 42, Admin
Files, Gen Corresp, 600.12 (misfiled under Therm
DifT Proj), MDR; Memo, Maj Peterson to Groves,
sub: Met Proj Org Chart, 14 Oct 43, Admin Files,
Gen Corresp, 201 ((^en), MDR; Smvth Report, pp.
63-65 and 92; Interv, Author with Norman Hil-
berrv, 3 Jan 63, CMH; MDH. Bk. 4, Vol. 2, "Re-
search." Pi. 1, pp. 2.5-2.8, 7.1-7.3, Apps. B3, B5-
B7, D2 (Constr Rpt Extracts), DASA; Completion
Rpt, Stone and Webster, sub: Clinton Engr Works,
Contract W-7401-eng-13, 1946, pp. 6-11, OROO;
Rpt, Compton, sub: Opn of Met Proj, by Univ of
Chicago, and Ms, Compton, sub: "Mr. Fermi, the
Argonne Laboratory and the University of Chica-
go," both 28 Jul 44,' .Admin Files, (k-n Corresp, 080
(Argonne-L'niv of Chicago), MDR; Tables (Employ-
ment by MD on Design, Research and Constr as of
31 May, 31 Jul, and 31 Oct 43) in Rpt, sub: MD Proj
Data as of 1 Jun 43 (most items as of 1 Jun 43, but
tables appear to have been added at a later date).
Admin Files, Gen Corresp, 600.12 (Projs and
Prgms), MDR; DSM Chronologv, 13-14 Sep 42,
Sec. 2(a), OROO; Compton, Alonuc Quest, pp. 82-86,
110-11, 114-15, 151-52, 157, 170-71, 185-86; Mar-
shall Diarv, 25 Jun-5 Sep 42, OCG Files, Gen Cor-
resp, Groves Files, Misc Recs Sec, behind Fldr 5,
MDR; Interv, Author with J. M. McKinley, 4 Jan 63,
CMH. Captain McKinley served as deputy area engi-
neer at Chicago from about November 1943 to July
1945 and as area engineer until about November
1945.
these divisions, fast neutron, was ac-
tually located at the University of
California, Berkeley, with work in
progress at several other institutions.
Other divisions, too, had some as-
pects of their work under way at
other sites (for example, chemistry, at
Iowa State, where metallurgist Frank
Spedding was testing the metallurgi-
cal properties of uranium; and at
California, where chemist Glenn Sea-
borg was investigating the virtually
unknown chemistry of plutonium).
Under Compton's supervision and
direction, the Metallurgical Labora-
tory scientific staff moved ahead effec-
tively with devising and testing pile
and chemical separation designs for a
large-scale plutonium production
plant. With this experimental activity
proceeding apace, Compton reported
to District Engineer Marshall the
pressing need for additional research
facilities. Marshall immediately con-
tacted Stone and Webster and had
the firm draw up plans to expand the
laboratory's physical facilities, direct-
ing that subcontracts be let to Chi-
cago area construction companies. At
the same time. Deputy District Engi-
neer Nichols worked out with Comp-
ton the land and building require-
ments for the Argonne Forest pilot
plant site, located southwest of the
city, and cleared the way for its acqui-
sition by the Corps of Engineers'
Great Lakes Real Estate Office.
By the fall of 1942, the Army had
become an active partner in the Chi-
cago program. To provide liaison
with the Manhattan District, as well as
to assist Compton in procurement
and personnel matters, Marshall
opened the Chicago Area Engineers
Office in the University of Chicago's
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
University of Chicago Physics Building
physics building, which was adjacent
to Compton's own headquarters and
the laboratory's administrative and
business offices, and assigned Capt.
James F. Grafton as area engineer.
Shortly thereafter, the decision to
reduce Stone and Webster's responsi-
bilities for Metallurgical Laboratory
construction to limited architectural
and engineer services shifted much of
the burden of administering the ex-
pansion program upon Captain Graf-
ton and his modest staff. The in-
creased work load of letting and over-
seeing the great number of University
of Chicago subcontracts forced Graf-
ton to enlarge his staff, which gradu-
ally increased in size from nearly 100
in the summer of 1943 — when the
Army took over all OSRD-sponsored
research and development contracts —
to a total of approximately 250 in July
1945. To provide additional space for
the expanding Chicago area staff, the
Manhattan District leased the state of
Illinois' massive grey 124th Field Ar-
tillery Armory, located only a short
distance from the university campus.
Sharing the quarters with the area en-
gineer's staff were the laboratory's
administrative personnel, an arrange-
ment that facilitated closer coordina-
tion between the two groups in such
matters as security, labor and materi-
als procurement, personnel, prior-
ities, patents, and finances.
During the Metallurgical Laborato-
ry building and remodeling program,
which continued uninterrupted until
THE PILE PROCESS
187
Argonnl LABOKAroR\ Near C^hicago, one of the Metallurgical Project's
research facilities.
late 1944, the Chicago Area Engi-
neers Office oversaw construction
that provided the Chicago program
with more than 500,000 square feet
of space, including an entirely new
chemistry building with an annex,
several new buildings at the Argonne
site, and extensively remodeled facili
ties in existing structures, all at an ul-
timate total cost of about $2.15 mil-
lion. In carrying out this expansion,
the Army received the constant and
effective support of the University of
Chicago's administrative staff, which
consistently adhered to the policy set
forth at the beginning of the program
in 1942, namely, that it would "turn
the University inside out if necessary
to help win the war. Victory is much
more important than survival of the
University." ^
Pile Design
In late 1942, as Army leaders
gradually became more familiar with
the plutonium phase of the atomic
bomb project, they realized that
progress in pile development at the
Metallurgical Laboratory was likely to
be the key factor determining how
soon large-scale production of fission-
able material would be possible. ** In
^Rpt, Compton, sub: Opn of Met Proj bv l'ni% of
Chicago, 28 Jul 44, MDR.
■* Subsection on pile designs based on Rpt, Peter-
son, sub: Visit to Chicago Proj, 29 Sep 42, MDR;
Min, Conf at Met Lab, 15 Oct 42, Admin Files, Gen
Continued
188
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
124th Field Artillery Armory in Chicago
September, General Groves, newly
appointed as Manhattan commander,
sent Capt. Arthur V. Peterson, a civil
engineer by profession, to visit the
Chicago scientists. Then using the de-
tailed information in Peterson's
report as a guide, Groves arranged a
series of personal visits to Chicago in
early October, during which he at-
tended the policymaking meetings of
the Metallurgical Laboratory Techni-
cal Council and conferred with mem-
bers of its engineers and scientific
staff.
The Manhattan commander was im-
pressed with the way in which Comp-
Corresp, 337 (Univ of Chicago), MDR; Min, Tech
Council, 5 Oct 42 (Rpt CS-286), 12 Oct 42 (Rpt
CS-294), 13 Oct 42 (Rpt CS-306), 15 Oct 42 (Rpts
CS-309 and -311), 23 Dec 42 (Rpt CS-397), 22 Jan
43 (Rpt CS-414), ANL; MDH, Bk. 4, Vol. 2, Pt. 1,
pp. 3.1-3.16, and Pt. 2, pp. 4.2-4.7, and Vol. 3,
"Design," pp. 5.14-5.35, DASA; Hewlett and An-
derson, New World, pp. 174-82 and 193-98; Smyth
Report, pp. 42, 75, 81-83; Groves Diary, 5, 10, 15
Oct 42, LRG; Groves, Now It Can Be Told, pp. 40-41
and 80-81; DSM Chronology, Nov-Dec 42, passim,
OROO; Memo, Peterson to Nichols, sub: Reassess-
ment Sess at Chicago (12/2/42), 4 Dec 42, Admin
Files, Gen Corresp, 410.2 (Uranium), MDR; MPC
Rpt, 15 Dec 42, MDR; Rpt. Mtg with Grccnewalt, 24
Feb 43 (Rpt CS-2644), ANL; Ltr, Greenewalt to
Groves, 8 Jul 43, Admin Files, Gen Corresp, 080
(Argonne-Univ of Chicago), MDR; Compton, Atomic
Qiirsl. pp 161-63 and 167-70; Completion Rpt, Du
Pont, sub: CEW, TNX Area, Contract W-7412-cng-
23, 1 Apr 44, p. 303, OROO; Dist Engr, Monthly Rpt
on DSM Proj, 23 Mar 43. OCC; Files, Gen Corresp.
MP Files, Fldr 28, Tab A. MDR. For a detailed
discussion of the plutonium production process, see
appropriate volumes in Division 4, Plutonium Project,
of the National Nuclear Energy Series.
THE PILE PROCESS
189
New Chemistry Building, Metallurgical Laboratory, on the University of Chica-
go campus. Barely visible is the gothic tower (at far left) of the football stadium where Ennco
Fermi achieved the first chaw reaction in a graphite pile.
ton had organized the laboratory and
with the exceptional capabilities of
the scientific staff. He indicated his
general approval of the research pro-
gram, expressing but one major criti-
cism: The program was not moving
fast enough to permit a decision on
which proposed pile design should be
adopted for full-scale development. If
necessary, he said, the research scien-
tists should develop more than one
design, regardless of the cost, be-
cause the earliest start possible on de-
tailed design and construction was
tremendously important. Groves re-
called later that he had quickly con-
cluded that "the plutonium process
[of all the methods proposed] seemed
to offer . . . the greatest chances
for success in producing bomb
material." ^
At the time of Groves's first visits.
Metallurgical Laboratory scientists
had achieved only limited progress in
transforming the results of pile re-
search into concrete blueprints for
pile design. Seriously handicapped by
the lack of pure uranium metal in the
quantities needed for essential experi-
ments, the research teams barely had
made a start on a program for pile
development that called for pile
design and engineering in three
stages: a 10,000-kilowatt experimental
unit, to ascertain whether a chain re-
action could be sustained; a 100,000-
kilowatt pilot pile, to test helium cool-
^ Groves, \ow It Can Be Told. p. 41.
190
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
ing and the mechanical techniques of
loading and discharging; and a
second 100,000-kilowatt pile, also
helium cooled, to be the first unit of
the large-scale production plant. Each
of these piles would employ graphite,
now available in ample quantities
from commercial sources, as a moder-
ator. The pile designers would have
preferred heavy water, which com-
bined in a single element the moder-
ating and cooling factor required, but
its continuing scarcity made design of
a pile employing that hydrogen iso-
tope impractical.
Groves found, too, that project sci-
entists had not reached agreement on
what was, in some respects, the most
crucial problem in pile design — how
safely and efficiently to disperse the
intense heat that would be produced
by the fissioning process in a high-
wattage pile. Under the three-stage
plan, Compton had given helium
cooling a priority position. At the
same time, however, physicists
Eugene Wigner and Leo Szilard, as
well as other staff scientists, were still
giving serious consideration to a
number of other coolants, including
diphenyl and bismuth.^ Even water,
with its corrosive reaction to uranium
and high-neutron absorption, could
not be discounted.
Groves and the Manhattan District
officers who visited the Metallurgical
Laboratory in the fall of 1942 quickly
learned that the feasibility of all pile
designs would have to remain in
doubt until physicist Enrico Fermi
and his colleagues had completed
construction of an experimental pile
capable of a sustained chain reaction
and also had accurately measured the
neutron-absorbing characteristics of
each pile component (lattice, controls,
loading and unloading mechanism,
shielding, and coolant). At this stage
the pile researchers felt that attaining
a state of criticality was possible with
a properly designed and assembled
lattice of sufficiently pure graphite
and uranium metal. But what they
were uncertain of, and could not as-
certain until a chain reaction was set
going, was the actual size of the
multiplication factor k — the excess
number of neutrons above unity re-
quired to barely sustain fissioning in a
critical pile. And lacking this data,
design engineers found themselves
not knowing how much leeway they
had in selecting the materials for the
mechanical structure and coolant
system of the large-scale production
piles. "^
Spurred by the Army's insistence
on moving into engineering and con-
struction as rapidly as possible and by
the impending participation of E. L
du Pont de Nemours and Company as
a full-time partner of the Metallurgi-
cal Laboratory, Compton and the pile
researchers decided to modify earlier
plans. Under the revised program,
Fermi and his staff were to complete
as quickly as possible a low-powered
pile, to demonstrate the feasibility of
a chain reaction and furnish the
much-needed data about the k factor;
® Diphenyl is a white crystalline hydrocarbon that
melts at 160 degrees Fahrenheit and readily con-
ducts heat. Bismuth (Bi-83) is a grayish white metal,
with a reddish tinge, that absorbs relatively few neu-
trons and, like diphenyl, has a low melting point.
^ Criticality; or critical size, in a pile fueled with
uranium may be defined as the condition in "which
the number of neutrons produced in the fission
process just balances those lost by leakage and by
capture." See Glasstone, Sourcebook on Atomic Energy,
p. 518, par. 14.45.
THE PILE PROCESS
191
and another team was to begin work
on a second pile of low wattage at the
Argonne site, to provide project
chemists with the additional small
quantities of plutonium they urgently
needed to test methods and equip-
ment for separating the element. Pile
designers now would design only a
single 100,000-kilowatt helium-cooled
pile capable of producing an estimat-
ed 100 grams of plutonium daily; this
pile, they hoped, would function as
both the testing unit and the first unit
of the full-scale production plant. Fi-
nally, they were to continue testing
designs for piles cooled by water, di-
phenyl, and bismuth.
Fermi, achieving the historic first
sustained chain reaction on 2 Decem-
ber,® found that the k factor was con-
siderably larger than he had anticipat-
ed. This discovery removed a chief
objection to water, diphenyl, or even
air as a coolant in high-powered piles,
since the greater margin of k would
permit more neutron absorption with-
out reducing the efficiency of pile
operation. Also, the larger k factor
indicated a much greater choice in
materials of coolant pipes, the control
mechanism, and for load and dis-
charge equipment.
Nevertheless, in view of the ad-
vanced status of the helium-cooled
pile design, both Du Pont and the
Army continued to favor its develop-
ment as the prototype for the produc-
tion units, even though Fermi's new
data and other Metallurgical Labora-
tory scientists' encouraging research
into alternate methods had made
liquid or air cooling seem far more
^ See Ch. V for a fuller description of the historic
first sustained chain reaction on 2 I^ec 42.
feasible. By the time the Military
Policy Committee decided on 10 De-
cember to shift the location of the
large-scale plutonium production
plant from the Clinton Engineer
Works in Tennessee to a more isolat-
ed area, preliminary designs for the
100,000-kilowatt helium-cooled pile
were sufficiently complete to provide
the Army with the requisite criteria
not only for determining the safety,
power, water, and other site require-
ments but also for compiling the
specifications list of materials.
An unresolved point of concern to
project engineers, especially those
from Du Pont, was the feasibility of
operating a graphite-moderated pile
on an industrial scale, whether cooled
by helium or any other type of cool-
ant. Because so many technical uncer-
tainties still remained, Du Pont scien-
tists emphasized to Groves the need
for developing an alternate pile
design, as insurance against total fail-
ure, and expressed particular interest
in the technical and engineering ad-
vantages of a pile that could be both
moderated and cooled with heavy
water. The Military Policy Committee,
therefore, decided to continue the
heavy water research already in
progress, recommending the expan-
sion of heavy water facilities. Some
weeks earlier, Du Pont had suggested
that the manufacture of heavy water
by the distillation method could be
carried out by modifying certain fa-
cilities at the Morgantown (West Vir-
ginia), Wabash River (Indiana), and
Alabama Ordnance Works, where the
company was manufacturing muni-
tions for the government. Conse-
quently, in late December, Groves ap-
proved negotiation of contracts with
192
W^
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
-.. ,^^^
-L,^
- ' .^ .if ^'
Heavy Water Production Plant at the Wabash River Ordnance Works
Du Pont to build and operate heavy
water plants at these facilities. {See
Map 2.)
From the standpoint of pile engi-
neering development, completion of a
pile design as quickly as possible was
a matter of considerable importance
to Du Pont. In January 1943, Du Pont
was still giving first priority to the
helium-cooled pile for the production
plant, even though company design-
ers were experiencing little success in
resolving complex technical prob-
lems. A hopeful portent, however.
was Fermi's latest research finding
into the value of k, which revealed
that the margin of neutrons in a ura-
nium-graphite pile was probably suffi-
cient to make either liquid or air cool-
ing feasible on a large scale. Encour-
aged by Fermi's data, Wigner and his
research team had pushed ahead on
designs for a water-cooled production
pile and were able to complete ac-
ceptable preliminary blueprints by
early January. At the same time, also
partly in response to Fermi's revela-
tion, a team of Du Pont and Metallur-
THE PILE PROCESS
193
gical Laboratory engineers and scien-
tists began intensive work on design
of an air-cooled pilot pile of moderate
wattage. In spite of minor difficulties,
the team completed virtually all pile
engineering designs and specifications
by the end of April. That same
month, in accordance with the earlier
decision to move the location of the
plutonium semiworks from Chicago
to Clinton, Du Pont commenced pile
construction at the Tennessee site.
Meanwhile, Wigner's group submit-
ted the preliminary designs for the
water-cooled production pile to Du
Pont. Du Pont engineers at first were
skeptical about the feasibility of the
water-cooled pile, because they seri-
ously doubted the problems of leak-
age and the water's corrosiveness
could be overcome; however, continu-
ing problems with the helium-cooled
pile designs finally persuaded them
that Wigner's pile might be the
answer for the plutonium produc-
tion plant. Terminating all helium
pile research in mid-February, Du
Pont design teams worked at an accel-
erated pace through the spring,
summer, and early fall to complete
blueprints for a water-cooled pile. In
October, as the early stages of build-
ing the plant at the Hanford site in
south central Washington State were
rapidly nearing completion, delivery
of the design specifications precluded
serious delays in meeting pile con-
struction schedules.
Chemical Separation Process Design
In the fall of 1942, the problems of
developing the second stage of the
plutonium production process — the
chemical separation of the new ele-
ment from irradiated uranium — ap-
peared less formidable to General
Groves and Du Pont officials than
those relating to development of the
pile and separating the isotope U-235
from LI-238, because chemical sepa-
ration generally involved techniques
already familiar to chemists and
chemical engineers. But time proved
this optimism was not warranted;
project scientists and engineers spent
almost as long developing an indus-
trial-scale separation process as they
did to complete design and engineer-
ing of a pile production process.
Since the beginning of the year, re-
search teams at the Universities of
Chicago and California, Berkeley, and
at Iowa State College had worked
without letup to design a suitable sep-
aration process. Handicapped at first
by the unavailability of more than mi-
crogram quantities of plutonium, the
teams had tested a variety of meth-
ods, all of which had required han-
dling the intensely radioactive by-
products by remote control. Deciding
finally in favor of a precipitation proc-
ess employing lanthanum fluoride in
solution as the carrier, project chem-
ists convened in Chicago on 15 Octo-
ber to present the results of their re-
search to representatives of the Army,
Du Pont, and Stone and Webster.^
^ For a fuller account of development of a process
for the chemical separation of plutonium consult
Met Lab Monthly Rpts, CN-I14, -239, -250, -261,
-299, -343, -359, -419, -421, mostly 1942, ANL;
Min, Lab Council (Met Lab), 31 Mav 43 (Rpt CS-
194
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
General Groves, Colonels Marshall
and Nichols, and Captain Grafton
joined with officials from the two
firms serving as prime contractors on
the plutonium project and members
of the Metallurgical Laboratory staff
to hear leaders of the separation
process research teams describe why
they believed the lanthanum fluoride
method was feasible for a large-scale
production plant. Impressed by the
practicality of the research teams'
proposed separation process based on
the precipitation method, both Army
and industry representatives approved
going ahead with further tests. They
also were duly impressed by the evi-
dence of intense radioactivity in the
separation process, a fact that subse-
quently contributed to the Military
Policy Committee's decision in De-
cember to shift the plutonium pro-
duction plant from Tennessee to an-
other location.
As further research in the winter
and spring of 1943 revealed that lan-
thanum fluoride presented certain
chemical problems not previously dis-
cerned, project scientists began test-
ing other substances and found that
bismuth phosphate gave the best re-
sults. In May, Du Pont managers de-
cided in favor of designing the chemi-
cal separation units at the Clinton
694) and 3 Jul 43 (Rpt CS-749), ANL; Min, Conf at
Met Lab, 15 Oct 42, MDR; DSM Chronology, 14
Dec 42, Sec. 25, OROO; MDH, Bk. 4, Vol. 2, Pt. 1,
pp. 6.1-6.8, and Pt. 2, 5.2, and Vol. 3, pp. 6.5-6.6
and 6.9, DASA; Smyth Report, pp. 71-73, 86-88, 97-
100; Compton, Atomic Quest, pp. 50-52, 55-56, 100-
101, 175-76; Groves, Xow It Can Be Told. pp. 41-42;
Glenn Seaborg, The Transuranium Elements (New
Haven: Yale University Press, 1958), pp. 20-27;
Hewlett and Anderson, Xew World, pp. 182-85 and
204-05.
semiworks and the Hanford produc-
tion plant to employ bismuth phos-
phate, with the possibility of lantha-
num fluoride as a backup choice,
because both chemicals could be
employed in the same type of
equipment.
Du Pont Collaboration and
Other Problems
Steady progress on development of
pile and chemical separation process
designs in early 1943 demonstrated
the basic validity of the Army-orches-
trated arrangements for collaboration
between the Metallurgical Laboratory
and Du Pont. On occasion, however,
some differences surfaced between
the two organizations that posed a
possible threat to fully effective joint
cooperation. When such instances oc-
curred, the Army promptly intervened
and endeavored to provide the direc-
tion and guidance essential to main-
taining viable collaboration. In Janu-
ary, for example. Major Peterson,
who recently had replaced Captain
Grafton as the Chicago area engineer,
joined with Compton in developing a
plan to move the first chain-reacting
pile from the University of Chicago's
West Stands squash court to the Ar-
gonne site. Fermi and his fellow sci-
entists wanted to keep the pile on
campus; however, Army and Du Pont
officials considered pile operation in
the heavily populated university dis-
trict much too hazardous. A short
time later, the Army also acted as ar-
bitrator for Du Pont and the Univer-
sity of Chicago, securing an agreement
from the latter that it would operate
the Clinton semiworks.
THE PILE PROCESS
195
/
Maj. Arthur V. Peterson
While collaboration between the
Metallurgical Laboratory and Du Pont
proceeded harmoniously on most
matters, the emergence of seemingly
innocuous misunderstandings in Feb-
ruary portended more serious dis-
agreement in the future. ^° One of the
first "minor" disputes erupted over a
question on the extent the physicists
who had designed the water-cooled
pile at the Metallurgical Laboratory
should participate in drawing up the
^"Memo, Compton to Groves, sub: Opn of Piles
I, II, and III, 19 Jan 43; Memo, Compton to Groves,
sub: Chain-reacting Unit on Univ of Chicago
Campus, 2 Feb 43; Rpt, Compton, Fermi, and
Robert S. Stone (Clinical-Biological Physics Div
chief. Met Lab), sub: Public Hazards at West Stands,
3 Feb 43. All in Admin Files, Gen Corresp, 600.12
(Projs and Prgms), MDR. Hewlett and Anderson,
Sew World, pp. 200-201. Ltr. (Compton to Groves, 5
Feb 43, Admin Files, Gen Corresp, 600 12 (misfiled
under Therm Diff Proj), MDR.
detailed engineering blueprints and
specifications for the production
plant. Crawford H. Greenewalt, Du
Pont's liaison representative to the
Metallurgical Laboratory, pointed out
that Du Pont's customary policy was
to rely primarily upon its own staff
for detailed design and that, while Du
Pont would want to have continued
access to the Chicago scientists for
occasional assistance, the initiative in
requesting such help should come
from the company. Eugene Wigner,
who had considerable training in en-
gineering as well as physics, dis-
agreed. He contended that his team
was entitled to an active role. When
Wigner learned Du Pont did not plan
to invite his group to Wilmington, he
concluded that his own earlier ex-
pressed opposition to having the firm
participate in the plutonium project
was the reason. He offered to resign
as group leader, hoping that would
clear the way for the rest of his team
to go to Wilmington. Compton ex-
plained that Du Pont's action was cus-
tomary practice and not motivated by
any personal objection to the scien-
tist. While Wigner's suspicions were
not entirely allayed, he agreed to con-
tinue with the project. He stayed only
briefly in Wilmington, however, and
then returned to Chicago, where
Compton diverted him to the expand-
ing heavy water pile program. ^^
The Wigner incident pointed up a
major problem for the Army in ad-
ministering the Manhattan Project. As
development of a process moved
from basic research into engineering.
''Compton, Atomic Quest, pp. 168-69; Ltr, Wigner
to Compton, 5 Aug 43, Incl to Memo, Peterson to
Groves, sub: Dissatisfaction at Met Lab, 13 Aug 43,
Admin Files, Gen Corresp, 080 (Labs), MDR.
196
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
construction, and operations, many of
the scientists were no longer needed.
Yet Manhattan leaders had to have
ready access to the fundamental
knowledge and skills of these scien-
tists. For security reasons, too, scien-
tists who had become privy to impor-
tant aspects of the program could not
simply be released and sent back to
the colleges and universities. One so-
lution was to transfer them to labora-
tory positions at Clinton, Hanford,
Los Alamos, or to the staff of indus-
trial firms under contract to the
project. But for the majority who
must be retained on the staff of basic
research organizations like the Metal-
lurgical Laboratory, there had to be
continuing programs of meaningful
research and development. In such a
novel and relatively undeveloped
field, devising useful research projects
was not difficult; the problem was to
keep the always limited resources in
manpower and materials channeled
into those projects that would con-
tribute most directly to the ultimate
production of atomic weapons.
By spring, Compton found a good
compromise solution in the project
for design of a heavy water pile, al-
ready under way on a limited scale
and acceptable to both Du Pont offi-
cials and Groves because they viewed
it as an essential backup for the Han-
ford plant. Furthermore, it was of in-
terest to many of the Metallurgical
Laboratory scientists. The promise of
increasing supplies of heavy water
from both Trail (British Columbia)
and the Du Pont-operated distillation
plants prompted Compton to work
out an agreement with Greenewalt
and Colonel Nichols that provided for
centering all future heavy water re-
search at the Metallurgical Laboratory
under the direction of Professor
Henry D. Smyth, head of the physics
department of Princeton University. ^^
But Major Peterson reported that,
in spite of the initiation of the heavy
water pile program, Metallurgical
Laboratory scientists continued to be
discontented with Du Pont's methods
and procedures. Many disliked the te-
dious work of reviewing the detailed
blueprints for the Hanford plant, a
chore made necessary because the
Metallurgical Laboratory had to ap-
prove all process designs. When they
found errors, they concluded Du Pont
was mismanaging pile development.
Wigner, too, again complained that
Du Pont was not consulting sufficient-
ly with its Chicago counterpart on
heavy water pile design, thus delaying
its development.
In late June, Groves decided the
time had come to deal with what he
termed the "scientist problem." In
*^ For a detailed discussion of Manhattan
Project's heavy water program and heavy water pile
development see MDH, Bk. 3, "The P-9 Project,"
and Bk. 4. Vol. 2, Pt. 1, pp. 3.3-3.14. DASA. Brief
discussion in this and following paragraph on the
heavy water pile program at Chicago based on
Notes on Conf Held at Wilmington, Del., on April
16th, Incl to Memo, Nichols to Groves, 19 Apr 43,
Admin Files, Gen Corresp, 337 (Wilmington), MDR;
Ltr, Greenewalt to Compton, 12 Jun 43, Admin
Files, Gen Corresp, 441.2 (Polymer), MDR; Trans-
mittal Ltr, Compton to P-9 Reviewing Committee
Members, sub: Memo on Transmittal of P-9 Rpt,
1 1 Aug 43, Admin Files, Gen Corresp, 334 (P-9 Re-
viewing Committee), MDR; Memo, Capt Lawrence
L. Grotjan (Columbia Univ Area Engr) to Nichols,
17 Apr 46, Admin Files, Gen Corresp, 201 (Urey),
MDR; MPC Min, 9 Sep 43, OCG Files, Gen Cor-
resp, MP Files, Fldr 23, Tab A, MDR; DSM Chro-
nology, 10 Nov 42, Sec. 23(i), OROO; Hewlett and
Anderson, Neui World, pp. 201-04; Smyth Report, pp.
101-02; Compton, Atomic Qufst. pp. 99-100; Groves,
Now It Can Be Told, p. 15, n. 8.
THE PILE PROCESS
197
line with a suggestion from the MiH-
tary Policy Committee, he arranged
with President Franklin D. Roosevelt
to write a letter, addressed to him but
actually intended for the atomic
project scientists. Emphasizing first
the need for strictest adherence to se-
curity in atomic matters (there had
been incidents involving scientists,
particularly at Los Alamos), the Presi-
dent went on to say that he had
placed Groves in complete charge of
carrying out "all development and
manufacturing aspects of the work."
He concluded that "whatever the
enemy may be planning, American
Science will be equal to the
challenge." ^^
The Manhattan commander made
certain this letter received wide circu-
lation among project scientists. In
Wigner's group, it appears to have
elicited an unfavorable response.
"They felt," Peterson reported to
Groves, "that it was unfair for the
President to give authority to you and
that his closing sentence concerning
American Scientists being equal to
any challenge was a farce since he al-
lowed them neither responsibility nor
authority." In the opinion of some
members of the group, "the presence
of Du Pont and the Army slows the
project. . . ." ^*
In early August, General Groves
appointed a committee to review the
^^ Ltr (source of quotations), Roosevelt to
Groves, 29 Jun 43, OCG Files, Gen Corresp, MP
Files, Fldr 25, Tab D, MDR; MPC Min, 24 Jun 43,
MDR.
** Memo, Peterson to Groves, sub: Dissatisfaction
at Met Lab, 13 Aug 43, MDR. Peterson erred in
paraphrasing from the President's letter, stating
"American Scientists" instead of "American
Science."
role the heavy water program should
have in the atomic bomb project, a
step that was, at least in part, also in-
tended to allay dissatisfaction among
the Chicago scientists. Headed by
MIT Professor (chemical engineering)
Warren K. Lewis, with Standard Oil
Vice President Eger V. Murphree,
physicist Richard C. Tolman, who was
Groves's scientific adviser, and Har-
vard Professor (chemistry) E. Bright
Wilson, Jr., as members, the group
upheld the Army, Du Pont, and
Compton's earlier objectives. They
recommended continuation of a rela-
tively modest heavy water pile re-
search program at the Metallurgical
Laboratory "as insurance against a
possible failure of the Hanford graph-
ite piles to produce 49 [plutonium] at
their rated capacity, and secondarily
to explore the possibilities of a
method for producing 49 which might
utilize uranium more efficiently than
graphite piles." ^^
By early fall, the scientists' dissatis-
faction had declined substantially,
partly as a result of the chance they
had had to unburden their grievances
to members of the committee and
partly because the major design phase
of pile development was nearing an
end. Even Wigner, acceding to Comp-
ton's wishes, agreed somewhat reluc-
tantly to continue to oversee work on
the heavy water pile. Nevertheless,
Compton later recalled that, although
the collaboration had achieved basic
design of the plutonium semiworks
and production plant by late 1943,
there remained in the relationship "a
1* Rpt, Committee on Heavy Water Work, 19 Aug
43, Att. 2 to MPC Min, 9 Sep 43, MDR.
198
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
state of tension that caused continual
concern to those responsible for the
success of the undertaking." ^^
Organization for Plutonium Production
In early 1943, General Groves and
the Military Policy Committee devot-
ed considerable attention to assisting
Du Pont and the Metallurgical Labo-
ratory staff in forming a plutonium
production organization. In this orga-
nization Du Pont was to have primary
responsibility for design, construc-
tion, and — except for the semiworks —
operation of the plutonium facilities.
Because of the uniqueness of the
processes involved, the firm's limited
experience in dealing with them, and
the overall urgency of the bomb
project, Du Pont felt its scientists and
engineers would need assistance from
the Metallurgical Laboratory staff in
all phases of the plutonium program.
Thus, as the setting for collaboration
was about to shift— although in a
somewhat altered form — from the
design to the construction and pro-
duction phases, the Army once again
had the primary administrative task of
preventing fundamental differences in
the two organizations' modus operandi
from interfering with the progress of
the program.
Du Pont's TNX Division
At the end of 1942, after analyzing
the unusual nature of the problems
involved in the plutonium production
process and weighing the District's
stringent requirements for security
and safety, Du Pont established a spe-
cial organization for plutonium activi-
ties within the company itself. ^'^
Given the designation TNX Division,
this new unit functioned as a subordi-
nate element of the company's Explo-
sives Department, which already had
designed and was operating a number
of government-owned munitions
plants. Locating the TNX Division in
a regular company department was
consistent with Du Pont's decision to
organize and administer its plutonium
program in accordance with its stand-
ard operating procedures, and, con-
comitantly, because this arrangement
helped to conceal the true character
of TNX operations, it fully satisfied
the District's requirements for project
security.
Du Pont's operating procedures dif-
fered somewhat from comparable in-
dustrial firms in the early 1940's. The
company did not have a highly cen-
tralized organizational structure and
method of operation but was a kind
of industrial confederation of semiau-
tonomous departments, each with
many of the characteristics of an inde-
pendent business enterprise. Guided
by broad policies laid down by top
executives, a general manager admin-
istered each department very much in
the same fashion as the president of a
company, operating under his own
budget and making most of the rou-
tine decisions. When additional assist-
Compton, Atomic Quest, p. 169.
'^ Except as otherwise noted, subsection on Du
Pont's plutonium organization based on E. I. du
Pont de Nemours and Company, Du Pont 's Part m the
Xatwnal Security Program. 1940-1945 (Wilmington,
Del.: Du Pont, 1946), pp. 8-9; Rpt, Du Pont, sub:
Constr at Hanford Engr Works, Contract W-7412-
eng-1, Du Pont Proj 9536, Proj Hist (hereafter cited
as Du Pont Constr Hist), 9 Aug 45, Vol. 1, pp. 22-
39, HOO; MDH, Bk. 4, Vol. 3, pp. 10.2-10.3 and
App. B7, DASA; Groves Diary, 16 Dec 42, LRG;
Hewlett and Anderson, Sew World, pp. 187-88.
THE PILE PROCESS
199
ance was needed, the manager could
get it from Du Font's permanent aux-
iliary departments — the Engineering
Department, for example — that fur-
nished regularly required services,
such as plant construction and per-
sonnel recruitment.
Consistent with these operating
procedures, Du Font's management
turned over to the general manager
of the Explosives Department, E. B.
Yancey, overall responsibility for most
of the company's plutonium program.
Yancey, already extensively involved
in other wartime projects, delegated
direct authority over the program to
his assistant general manager, Roger
Williams. A chemical engineer with
extensive experience in wartime con-
struction for the government, Wil-
liams's introduction to the atomic
project had been as a member of the
Lewis reviewing committee. He now
became, in effect, the active head of
the TNX Division, with responsibility
for Du Pont plutonium activities at
Wilmington, Clinton, and Hanford.
Drawing personnel from most of
the departments of Du Font, as well
as from company-operated war plants
and the Metallurgical Laboratory,
Williams organized TNX into two
major subdivisions: the Technical Di-
vision, which carried out design de-
velopment in close collaboration with
the Chicago and Clinton researchers;
and the Manufacturing Division,
which advised the Engineering De-
partment on construction of the plu-
tonium facilities and planned and su-
pervised production plant operations.
From the Grasselli Chemicals Depart-
ment, Williams selected chemical en-
gineer Crawford Greenewalt to head
the Technical Division. Serving, as
General Groves perceived it, "as the
bridge between the hard-driving,
thoroughly competent, industrial-
minded engineers and executives at
Wilmington and the highly intelligent
but theoretically inclined scientists at
Chicago," Greenewalt spent much of
his time at the Metallurgical Labora-
tory and Clinton semiworks and thus
left his assistant, George Graves, in
charge of routine administration.^^
Williams's choice to head the Manu-
facturing Division was R. Monte
Evans, a production manager of long
experience, most recently with the
company's Ammonia Department.
The extensive involvement of Du
Font's Engineering Department in the
atomic project came about as a result
of the company's policy of building its
own plants rather than contracting
them out to regular construction
firms. E. G. Ackart, Du Font's chief
engineer and Engineering Depart-
ment head, assigned to his deputy,
Granville M. Read, primary responsi-
bility for the construction aspects of
the plutonium program and to John
N. Tilley the vital role of liaison offi-
cer to the Explosives Department.
Eventually, the Engineering Depart-
ment committed more than 90 per-
cent of its personnel and resources to
plutonium construction.
Metallurgical Project
In 1943, shortly after Du Font had
established its TNX Division, Arthur
Compton, faced with the rapid
growth of the plutonium research
program, extensively restructured and
expanded its administrative organiza-
tion. By October, the plutonium orga-
** Groves, Now It Can Be Told, p. 79.
200
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
nization, now designated the Metal-
lurgical Project, ^^ comprised the Met-
allurgical and Argonne laboratories
at Chicago; the newly designed Clin-
ton Laboratories (cover name for the
plutonium semiworks) at the Tennes-
see site; and the many research pro-
grams under way at other institu-
tions— eventually seventy — in the
United States.
Giving up his dual position as
chairman of the Metallurgical Labora-
tory and its Executive Committee
(which he abolished), Compton
became director of the Metallurgical
Project and appointed three associate
directors: Norman Hilberry, his
former student and longtime personal
assistant, as associate director for re-
search; ^° Robert S. Stone, from the
University of California at Berkeley,
as associate director for health mat-
ters; and Wilbur C. Munnecke, from
the University of Chicago, as associate
director for administration. At the
same time, using the Metallurgical
Laboratory Technical Council as a
basis, he established the policy-
making Metallurgical Project Council
'^Subsection on Metallurgical Project based on
Org Chart attached to Rpt, Peterson, sub: Visit to
Chicago Proj, 29 Sep 42, MDR; Memo, Peterson to
Groves, sub: Met Proj Org Chart, 14 Oct 43, MDR;
Rpt, Compton, sub: Opn of Met Proj by Univ of
Chicago, 28 Jul 44, MDR; MDH, Bk. 4, Vol. 1,
"General Features," pp. 9.2-9.3, and Vol. 2, Pt. 1,
pp. 2.1-2.2, 7.1, App. B5, DASA; Smyth Report, pp.
63-65 and 92; Compton, Atomic Qtmt, pp. 82-86
(quotations from p. 84), 157, 170-71, 185-86; Hil-
berry Interv, 3 Jan 63, CMH.
^"Hilberry, who served as Compton's personal
representative on those occasions when the latter
could not carry out some of his many professional
commitments, became, in effect, associate director
of the entire Metallurgical Project in late 1943,
when Compton moved his headquarters to Oak
Ridge. Hilberry remained at the Metallurgical Labo-
ratory in Chicago, where he had his office. See
Compton, Atomic Quest, p. 185.
and, as council members, selected
twenty-five leading staff scientists
from the subordinate laboratories.
The Metallurgical Project was from
its initiation "a novel enterprise" for
Arthur Compton, who, even before
the reorganization of the plutonium
program, had realized that its ulti-
mate success in producing some hun-
dreds of pounds of plutonium for the
wartime needs of the atomic project
was dependent on coordinating the
resources and talents of literally thou-
sands of scientists and technicians. He
had made a substantial beginning
toward attaining the program objec-
tive in 1942 through the organization
and operation of the Metallurgical
Laboratory, and now he endeavored
to assure its success by providing in
the Metallurgical Project the organiza-
tion with the means to carry through
to completion the research, develop-
ment, design, and engineering of the
plutonium facilities.
District Area Offices
Starting in late 1942, as the scien-
tific and industrial elements of the
plutonium program rapidly expanded,
the Army responded by enlarging its
own organization for overseeing the
program. As each major element
began to function, the Manhattan Dis-
trict established an area office for it.
By early 1943, area offices were oper-
ating in Chicago, Clinton, and Han-
ford; at Du Pont headquarters in Wil-
mington, Delaware; at the heavy water
plants in British Columbia, West Vir-
ginia, Alabama, and Indiana; and at
the larger research programs in
progress elsewhere in the country.
THE PILE PROCESS
201
such as at Iowa State College in
Ames.^^ {See Chart 1.)
In the early phases of plutonium
development, the Chicago and Wil-
mington area offices were the largest
and most important. And once Du
Pont started construction of the plu-
tonium semiworks in Tennessee, the
district engineer enlarged Major Pe-
terson's Chicago area responsibilities
to include the Clinton installation.
After visiting the site, Peterson set up
a Clinton branch of his Chicago area
office, designating it the TNX Oper-
ating Division. In August 1943, when
the District headquarters moved from
New York City to Oak Ridge, this di-
vision became the Clinton Laborato-
ries Division as a result of a major ad-
ministrative reorganization. Peterson,
while continuing as the Chicago area
engineer, assumed additional respon-
sibilities as the new division chief but
turned over immediate supervision of
the plutonium semiworks to his new
assistant. Captain Grafton, who had
been with the recently abolished Clin-
ton Area Engineers Office, until he
(Peterson) could relocate to the Ten-
nessee site. To handle most of the
routine administrative services for the
Chicago area office, the District head-
quarters furnished the area office's
new division with a token staff of
2^ Except as indicated, subsection on area offices
based on Org Charts, U.S. Engrs Office, MD, 15
Aug 43, 1 Nov 43, 15 Feb 44, 1 Jun 44, 28 Aug 44,
and 26 Jan 45, Admin Files, Gen Corresp, 020
(MED-Org), MDR; Ltr, Groves to Styer, sub: Pro-
motion of Lt Col Franklin T. Matthias, 25 Oct 44,
Admin Files, Gen Corresp, 210.2 (Off Promo),
MDR; Matthias Diary, Jan-Sep 43, passim, OROO;
Du Pont, In Xatwnal Secimty Program. App. 3B (origi-
nally issued as Stockholdns Bulletin. 24 Aug 45), p.
61; MDH, Bk. 4, Vol. 5, "Construction," Apps.
B57-B58, and Vol. 6, "Operations," pp. 18.1-18.6
and Apps. B8-B10, DAS A; Compton, Atomic Quest,
pp. 107-08; Groves, Xow It Can Be Told. pp. 72-73.
three District officers, five (later nine)
technically trained enlisted men, and
five civil service employees. By late
1943 and early 1944, with the shift
from research and development to
construction and operation of the
large-scale production plant, the area
office at Hanford expanded rapidly
while those at institutional research
centers reduced their activities and
staffs.
The precise character of the admin-
istrative relationships between the
Chicago, Wilmington, Hanford area
offices and the Manhattan District
headquarters in Oak Ridge varied
considerably. Certain factors, howev-
er, tended permanently to influence
this relationship. One of these was
geography. The stringencies of war-
time travel and communications and
Hanford's relatively isolated location
resulted in the area engineer, Lt. Col.
Franklin T. Matthias, having a good
deal more administrative autonomy,
at least in routine matters, than Peter-
son in Chicago or Maj. William L.
Sapper in Wilmington. Matthias main-
tained a permanent liaison official,
Mr. H. J. Day, in the Oak Ridge office
to keep him informed on current
Manhattan developments and to serve
as a channel for expediting action on
Hanford requests. By way of contrast,
the Chicago office always maintained
a much closer day-to-day relationship
with the District headquarters, par-
ticularly after Peterson began spend-
ing a major part of his time in
Tennessee as of late 1943. ^^
22 On charts showing the organization of the U.S.
Engineers Office, Manhattan District. Oak Ridge, in
late 1943. H. L. Day is listed as the liaison officer
for the plutonium project. See Org Charts, 15 Aug
Continued
202
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
While the Chicago area engineer
supervised plutonium research and
development activities, the Wilming-
ton area engineer had primary re-
sponsibility for monitoring plutonium
engineering and design, with a sec-
ondary assignment of supervising Du
Font's feed materials program at the
company's Chambers Chemical and
Dye Works in Deep Water, New
Jersey. Design activities centered in
Wilmington, where the Du Pont
design staff and visiting Metallurgical
Project scientists collaborated on the
engineering blueprints and specifica-
tions for the plutonium facilities in
Tennessee and Washington State.
Review and approval of these designs
before their dispatch to company en-
gineers at the Clinton and Hanford
sites constituted the most important
tasks of Major Sapper's Wilmington
staff, which, much of the time, re-
ceived assistance from personnel who
were temporarily detailed from the
Hanford area office. Because close co-
ordination between the Wilmington
and Hanford area offices was essential
on all matters relating to construction
and operation of the production
plant, Sapper reported to the district
engineer through Colonel Matthias.
A civil engineer with considerable
experience in civilian construction.
Colonel Matthias recruited both mili-
tary and civilian personnel, many
from other Corps of Engineers
projects, to form the operating nucle-
us (more than five hundred personnel
by 1944) of a burgeoning office orga-
nization. To complement Du Pont's
and 1 Nov 43, MDR. Matthias noted in his diary on
2 Aug 43 that Day was going to be located at the
Oak Ridge headquarters after 14 August. On the
relative autonomy of the Hanford area engineer see
Matthias Diary, 12 Sep and 28 Oct 43, OROO.
field construction organization at the
Hanford site, Matthias established
major divisions to monitor the many
construction-related activities of the
prime contractor and its numerous
subcontractors. Similarly, to reflect
the reorientation of plant activities
when Du Pont converted its construc-
tion organization into one for plant
operations, he revamped the Hanford
area office by expanding the produc-
tion division; by forming a new engi-
neering and maintenance operations
division; and, to the extent necessary,
by reorganizing the security, safety,
labor relations, fiscal audits, and com-
munity affairs sections. ^^
Army-Du Pont Administration
The Army-Du Pont plan for coordi-
nating and controlling project activi-
ties at the Hanford Engineer Works
(HEW) illustrates the way in which
District and TNX officials went about
jointly administering the plutonium
production program.^'* On matters of
general policy, TNX executives could
consult with Colonel Nichols, to
whom Groves had given broad re-
sponsibility for plutonium construc-
tion and production, or, if necessary,
directly with Groves — but only after
informing Nichols. On nonpolicy mat-
ters, TNX officials were to communi-
cate with Colonel Matthias (or, where
^^ On the area engineer and Du Pont construc-
tion and operations organization at Hanford Engi-
neer Works see MDH, Bk. 4, Vols. 5 and 6, each
App. B, DASA; Du Pont Constr Hist, Vol. 1, HOO;
Intro to Rpt, Du Pont, sub: Memoranda for File on
HEW Opns, 1944-46 (hereafter cited as Du Pont
Opns Hist), Sep 46, HOO.
^"•Ltr. E. B. Yancey to Dist Engr, Attn.: Nichols,
sub: Corps of Engrs-Du Pont Corresp and Con-
tracts of HEW, 4 May 43, Admin Files, Gen Cor-
resp, 161 (Du Pont), MDR.
THE PILE PROCESS
203
appropriate, with Lt. Col. H. R.
Kadlec, his construction chief); or
Major Sapper at Wilmington; or Maj.
James E. Travis at District headquar-
ters, who in 1943 headed the Service
and Control Division at Oak Ridge.
On questions relating to nonpolicy
matters submitted by Matthias,
Kadlec, and other staff members, Du
Font's officials at the Hanford site
could make decisions, furnish infor-
mation, or provide recommendations
as they saw fit; when necessary, they
could consult with their department
or division in Wilmington by teletype.
In those instances when the Hanford
area engineer or his staff members
were dissatisfied with results of in-
quiries directed to the Du Pont field
staff, they were authorized to commu-
nicate directly with Roger Williams or
Granville Read or with Major Sapper.
Inevitably, many problems arose
that could not be readily resolved by
the local area engineer, or even by
the district engineer, and the majority
of these ended up on General
Groves's desk in Washington, D.C.
Most often they involved important
policy decisions or required extensive
negotiations with other wartime agen-
cies. For example, during the design
and construction phases of the pluto-
nium project. Groves had to deal with
problems of electric power supply at
Hanford, acute shortages of essential
workers at both the Hanford Engi-
neer Works and Clinton Laboratories,
deferment of key civilian scientific
and technical personnel, and procure-
ment of a great variety of materials
and equipment. Groves and his small
liaison staff frequently intervened per-
sonally to expedite solutions. In a
comparatively few cases, problems
had to be resolved by the Military
Policy Committee or by special re-
viewing committees that Groves ap-
pointed. Typical was the heavy water
research and experimentation pro-
gram, which required an investigation
by a reviewing committee and a deci-
sion by the Military Policy Committee
to determine the scope of this
program and the extent of inter-
change with the Canadians that was
permissible.^^
Beginning in late 1942, the com-
bined efforts of Groves, Compton,
Greenewalt, and Williams facilitated
effective Metallurgical Project-Du Pont
collaboration through an interchange
of both expert personnel and scientific
and technical information of all
kinds. ^^ To explain the Metallurgical
Laboratory scientists' preliminary heli-
um- and water-cooled pile designs to
Du Pont's TNX staff, Compton dis-
patched the respective pile research
teams to Wilmington. While most of
the Chicago scientists stayed at Wil-
mington only for a limited time, at least
one young physicist, John A. Wheeler,
who was an expert on pile develop-
ment, became a permanent member of
the Du Pont design staff. The design
teams from Wilmington that visited
the Metallurgical Laboratory in No-
vember were the vanguard of many
others who, in subsequent months, fol-
^^ For examples of problems relating to power
and labor see correspondence in HB Files, Fldr 51,
MDR. The extent of Groves's involvement in solv-
ing such problems can be traced in Groves Diary,
Apr-Jun 43, passim, LRG. On the heavy water prob-
lem see MFC Min. 9 Sep 43, MDR.
^^ Discussion of development of the means for
collaboration between the Metallurgical Project and
Du Pont based on Groves, Xow It Can Be Told, pp.
48 and 79-80; Smyth Report, pp. 92-93; Compton,
Atomic Quest, pp. 164-65; DSM Chronolog>', 25 Nov
42, Sec. 23(a), OROO; Rpt, Whitaker, sub: Conf at
Wilmington, 17-18 Dec 42 (Rpt CS-406), ANL.
204
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
lowed periodically to confer with the
Chicago scientists about the latest de-
velopments in the pile process.
Greenewalt, too, regularly spent ex-
tended periods in Chicago (and, later,
at Clinton) and assigned Du Pont
physicist J. B. Miles as his permanent
representative at the Metallurgical
Laboratory. Both Greenewalt and
Miles, when they were in Chicago,
attended meetings of the Metallurgical
Project Council and regularly con-
ferred with the laboratory group
leaders.
The frequent interchange of expert
personnel gradually became a key fea-
ture of the collaboration, extending
eventually to include not only ex-
changes between the Chicago scien-
tists and Wilmington designers but
also between the Wilmington design-
ers and the Clinton researchers, and
among the Clinton, Chicago, and
Hanford scientific staffs. While Metal-
lurgical Project scientists on occasion
complained bitterly that the Du Pont
design staff was not consulting ade-
quately with them on some matters,
on the whole the interchange appears
to have been one of the most essen-
tial and profitable aspects of the
collaboration.
Consistent with the plan to em-
ploy the Metallurgical Project essen-
tially as a Du Pont research and de-
velopment division, the plutonium
project leaders incorporated into the
Metallurgical Project-Du Pont work
relations agreement certain special
provisions to ensure a continuous and
adequate exchange of scientific and
technical information. The Metallurgi-
cal Project scientists regularly sent
copies of pertinent reports to the Du
Pont design team; in turn, the Wil-
mington designers kept the Chicago
and Clinton researchers fully in-
formed on current layout and process
design decisions, all of which then
had to be approved by appropriate
members of the Metallurgical Project
staff. A further interchange occurred
when Du Pont submitted completed
blueprints and process drawings to
the district engineer for the usual
contract review. The district engineer,
in compliance with the work agree-
ment, then sent the completed de-
signs to the Metallurgical Project staff
for final approval of the scientific and
technical aspects.
The Semiworks: Clinton Laboratories
In the early months of 1943, while
design groups were still developing
pile process designs and engineering
specifications, Du Pont construction
workers began building the plutoni-
um semiworks — in April, for security
reasons, officially designated CHnton
Laboratories — at the Clinton Engi-
neer Works in Tennessee. The
semiworks site, consisting of 112
acres and officially named the X-10
area, lay between two ridges along a
small creek in the isolated Bethel
Valley, some 20 miles southwest of
the town of Clinton and about 10
miles southwest of the planned com-
munity of Oak Ridge. Tentative plans
for the semiworks (they would be al-
tered and expanded several times
during the period of construction)
called for an air-cooled uranium-
graphite pilot pile and chemical sepa-
ration plant, 2'^ as well as an extensive
2^ Plutonium project officials conceived the Clin-
ton pilot pile and separation plant as a true
semiworks for the Hanford production plant; how-
Continued
THE PILE PROCESS
205
research laboratory and a number of
support, training, and administrative
facilities.
Construction
In his February 1943 progress
report to General Groves, District En-
gineer Marshall set 1 July as the con-
struction completion date for the plu-
tonium semiworks.^® The X-10 pile
and separation plant had to be put
into operation as quickly as possible,
to provide not only the design and
operational data for the Hanford pro-
duction plant but also the small quan-
tities of plutonium so urgently
needed for ongoing research and test-
ing. Furthermore, the facilities were
required to train key Du Pont em-
ployees in the techniques of plant
operation.
Pending completion of engineering
designs for the permanent installa-
tions, and less than a month after
Du Pont had signed the letter con-
tract (8 January 1943), company con-
struction crews began building the
temporary, service, and utility facili-
ties. In March, other Du Pont crews
began work on the permanent instal-
lations, starting with the chemical
separation plant. Even though
ever, with the decision to use water to cool the Han-
ford piles, the air-cooled pilot pile, strictly speaking,
lost its function. The officials weighed the possibili-
ty of converting the Clinton pile, but finally decided
that early production of small quantities of plutoni-
um was more important. Hence, only the separation
plant functioned as a true pilot facility. See Smyth
Report, p. 76; MDH, Bk. 4, Vol. 2, Pt. 2, p. 4.1,
DASA.
^^ Subsection on semiworks construction based
primarily on Completion Rpt, Du Pont, sub: CEW,
TNX Area, 1 Apr 44, OROO; Disl Engr. Monthly
Rpts on DSM Proj, Jan-Sep 43, MDR; MDH, Bk. 4,
Vol. 2, Pt. 2, pp. 2.1-2.10, DASA; Hewlett and An-
derson, Xeu' World, pp. 207-10.
Greenewalt, who was supervising
design of this plant, had not yet
reached a decision on which of sever-
al chemical processes would be em-
ployed in it, the Wilmington design
teams had accumulated sufficient en-
gineering data to permit a start on its
basic components. As these neared
completion in the late summer,
Greenewalt decided to employ the
bismuth phosphate separation
method, which required installation of
miles of pipe as well as other process
apparatus. By early fall the chemical
plant was ready for test operations,
but these could not be carried out
until the pilot pile produced irradiat-
ed uranium slugs.
Construction work on the pilot pile
did not progress as swiftly and expe-
ditiously as that on the separation
plant, because the Du Pont design
staff did not complete the engineer-
ing blueprints for the air-cooled pile
until the end of April and crews exca-
vating the pile site unexpectedly
struck a large bed of soft clay, neces-
sitating installation of much more
foundation work than had been antici-
pated. It was June before construction
crews started pouring concrete for
the 7-foot-thick walls of the pile's
great outer shell, which would pre-
vent escape of radioactive emissions,
and late summer before they complet-
ed them. Thousands of holes pierced
the front facing of the shell, to permit
insertion of uranium fuel slugs. The
side and rear walls and the massive
top also had numerous openings of
varying sizes and shapes, to accom-
modate experimental and operating
equipment built into the pile. The
outer shell finished, technicians began
to assemble the pile itself, putting
206
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
into place hundreds of carefully ma-
chined graphite bars to form its inner
core — a structure measuring 24 feet
square and weighing an estimated
1,500 tons. In the meantime, other
workmen constructed the four-story
concrete and wood building to house
the pile and its auxiliary facilities — a
control room, a small "hot" labora-
tory equipped to handle radioactive
materials, and a core removal area.
In spite of constant pressure by
General Groves on Du Font's Engi-
neering Department, completion of
the Clinton Laboratories was slow,
primarily because of the extent of the
support and training facilities the
semiworks required. Because of the
isolation of the Bethel Valley X-10
site from the Y-12 (electromagnetic),
K-25 (gaseous diffusion), and S-50
(liquid thermal diffusion) areas, Du
Pont had to provide the semiworks
with its own machine shops, water
supply and treatment installations, a
steam plant, storage areas, and class-
rooms and laboratories for training. A
number of other factors beyond the
control of company officials also con-
tributed to serious delays. The addi-
tion of installations not included in
the original engineering designs and
major alterations in building plans
doubled the amount of construction.
Furthermore, building schedules
could not be maintained in the face of
persistent shortages in both common
and skilled labor in the region adja-
cent to the Tennessee site that, de-
spite efforts, grew worse in late 1943.
Unsatisfactory housing and commut-
ing conditions aggravated these short-
ages by increasing absenteeism and
worker turnover. Finally, there were
the chronic wartime difficulties in
procurement of essential building
materials.^®
The Army, endeavoring to assist
Du Pont in overcoming specific bot-
tlenecks, achieved its greatest success
in expediting materials and equip-
ment procurement. For example,
when Du Pont found that its standard
5-cubic-yard trucks for hauling ready-
mixed concrete were too heavy for
the poor condition of the entrance
road at the construction site, the Clin-
ton area engineer obtained on short
notice enough lighter trucks from the
St. Louis District to do the job. Simi-
larly, the area engineer's procurement
staff arranged for the transfer of
steam boilers, an item in extremely
short supply, from a Du Pont plant
near Nashville to the X-10 site. In an-
other instance, when the quarry at the
site failed to supply all the crushed
stone needed, the area engineer se-
cured authorization for Du Pont to
pay a higher rate for material re-
quired in road construction, thus ena-
bling the company to purchase addi-
tional amounts from sources available
outside the reservation.^^
The Army's resolution of procure-
ment problems enabled Du Pont to
meet the District's revised schedule
for completion and start-up oper-
ations of the semiworks, which Gen-
eral Groves optimistically predicted
in his October construction progress
report to Maj. Gen. Wilhelm D. Styer,
29 Groves, Now It Can Be Told, p. 78; Ltrs, Read to
Groves, 15 Apr 43, and Groves to Read, 22 Apr 43,
Admin Files, Gen Corresp, 600.12 (Projs and
Prgms), MDR; Completion Rpt, Du Pont, sub: CEW,
TNX Area, 1 Apr 44, pp. 44-72, OROO. See Ch.
XVII for details on measures taken to try to solve
the CEW labor shortage.
30 Completion Rpt, Du Pont, sub: CEW, TNX
Area, 1 Apr 44, pp. 70-71 and 203-04.
Clinton Laboratories Pilot Pile at CEW. Workers are inserting a uranium slug in
the east loading face of the graphite pile.
208
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
the Army Service Forces chief of
staff, ^^ could be expected by mid-De-
cember. Events in the ensuing
months bore out Groves's optimism.
CHnton Laboratories workers began
"charging" the pile in early Novem-
ber and, before the end of the year,
were processing the first batch of irra-
diated slugs in the chemical separa-
tion plant and sending the resulting
product to the Metallurgical Labora-
tory for use in further experiments.
And by early 1944, only weeks later
than Groves had estimated, the Man-
hattan commander had the satisfac-
tion of knowing the semiworks was
largely completed and well on the
way to full operation. ^^
Operation
As director of the plutonium pro-
gram, Compton began to develop
plans for operating pile facilities at
the Tennessee site as early as Sep-
tember 1942. He asked physicist
Martin D. Whitaker, who had taken
part in the early planning for a labo-
ratory at the site, to select Metallurgi-
cal Laboratory staff members to serve
as the nucleus of the X-10 operating
organization. While witnessing the
ongoing planning and construction of
the Clinton Laboratories in the ensu-
ing months, Whitaker and his staff
made the necessary preparations for
its future operation, giving a high pri-
^*The Army Service Forces, formerly the Services
of Supply, became the official designation with the
issue of WD GO 14 on 12 March 1943.
^^Memo, Groves to Styer, sub: Constr Progress,
MD, 19 Oct 43, AG 313.3 (22 Aug 47); Dist Engr,
Monthly Rpts on DSM Proj, Apr, May, Sep, Oct,
Dec 43 and Feb 44, MDR; Completion Rpt, Du
Pont, sub: CEW, TNX Area, 1 Apr 44, pp. 303 and
313, OROO; MDH, Bk. 4, Vol. 2, Pt. 2, pp. 4.7 and
5.3, DASA.
ority to manpower recruitment.^^
To obtain the requisite number of
operating personnel to perform both
industrial and managerial functions,
Whitaker's staff relied heavily on the
resources of the Metallurgical Project
laboratories and Du Pont. The first
permanent operating personnel ar-
rived from the Metallurgical Labora-
tory in April, at which time Du Pont
began to transfer its technicians. The
number of employees increased rap-
idly during the months that followed,
peaking in March 1944 at fifteen hun-
dred, which included the first ten of a
contingent of one hundred enlisted
men from the District's newly formed
Special Engineer Detachment (SED).
From March until the end of January
1945, which was the period of full
semiworks operation, total personnel
(that is, permanent employees, train-
ees for Hanford, and the SED
contingent) averaged about thirteen
hundred. ^"^
As the pilot pile attained full-scale
operation in January 1944, Whitaker
and Compton submitted to Major Pe-
terson, now chief of the Clinton Lab-
oratories Division, a projected re-
search and development program. In
it they outlined a specific schedule for
plutonium production through March
'and, in some detail, emphasized that
more than 75 percent of the laborato-
ries' 160-man technical staff would
concentrate on product isolation stud-
ies, which were essential for Hanford
^'Hewlett and Anderson, A'ra- World, pp. 210-12.
='^MDH, Bk, 4, Vol. 2, Pt. 2, pp. 8.2-8.4 and App.
B7 (Summary, Total Employees of Clinton Labs),
DASA; Stanley L. Falk and Author, Notes on Intervs
of X-10 Personnel at Oak Ridge, 22-24 Jun 60,
CMH. See Ch. XVI for details on the formation of
special military units, such as the SED, and on other
aspects of personnel recruitment.
THE PILE PROCESS
209
operations, and only 12 percent on
product production. Peterson ap-
proved the program, without major
changes, as the basis for semiworks
operation that would contribute most
effectively to the continued de-
velopment of large-scale plutonium
production. ^^
Soon after the pilot pile began op-
erating, the Clinton Laboratories op-
erating staff introduced certain design
modifications with the goal of achiev-
ing greater pile productivity. Month
by month, as the staff raised the effi-
ciency of pile operation, Colonel
Nichols kept General Groves in-
formed of the increased output. By
May, the pile was operating at a
power level of 1,800 kilowatts, almost
double that conceived by its design-
ers, and the addition of two large fans
in June and July significantly raised
the level to 4,000 kilowatts. ^^
These increases would have been to
no avail, however, had the separation
plant failed to perform as anticipated.
The operating staff remained very un-
certain about the success of the chem-
ical plant, because process design-
ers— lacking more than minute
amounts of plutonium — had not been
able to make adequate laboratory
tests of either the bismuth phosphate
or alternate lanthanum fluoride sepa-
ration method, so by early 1944 plu-
tonium project officials were greatly
relieved when the separation plant
produced a small amount of relatively
pure plutonium out of the first batch
of slugs from the pile. In February,
with the pilot pile producing irradiat-
ed uranium at a rate of one-third of a
ton each day, the district engineer es-
timated that plutonium production
for the first month of the separation
plant's operation would total over
500 milligrams. During the next five
months of operation, the operating
staff introduced occasional modifica-
tions that eventually increased the ef-
ficiency of the separation plant from
40 to over 90 percent. The plant op-
erated as a production unit until Jan-
uary 1945, when enough plutonium
had been produced to meet project
needs. The Clinton Laboratories then
undertook experiments with other ir-
radiated materials as fissionable fuel.
At this stage the separation process
was no longer required and the plant,
which had processed a total of 299
batches of uranium slugs, ceased
operations. ^"^
In addition to testing and operating
the pilot pile and separation plant,
the Clinton Laboratories technical
staff supplemented the Metallurgical
and Argonne laboratories staffs' ef-
forts to find solutions to the many
day-to-day problems that arose direct-
ly out of the design, construction, and
operation of the Hanford plants. For
example, the Clinton staff had an
active role in improving the canning
of uranium slugs, including develop-
ment of techniques to detect failure
and tests to ascertain the effects of
'^Memo, Whitaker and Compton to Peterson,
sub: Clinton Labs Prgm as of 1 Dec 43, 25 Jan 44,
Admin Files, Gen Corresp, 600.12 (Projs and
Prgms), MDR.
36MDH, Bk. 4, Vol. 2, Pt. 2, pp. 4.1 and 4.8-4.9,
DASA; Disl Engr, Monthly Rpts on DSM Proj, Jan
and Aug 44, MDR.
^^Dist Engr, Monthly Rpts on DSM Proj, Jan,
Mar-Jun, Oct 44 and Jan 45, MDR; MDH, Bk. 4,
Vol. 2, Pt. 2, pp. 5.1-5.5, DASA; Smyth Repnrl. pp.
76 and 102-04; Hewlett and Anderson, Sew World,
pp. 211-12; Compton, Atomic Quest, p. 190. The
Clinton Laboratories technical stafFs recommenda-
tions for the separation process are in the Rpt CN-
2021, 1 (Xt 44, OROO.
210
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
water corrosion. They also studied
high-neutron absorption by certain
fission products produced in pile op-
eration, a phenomenon that might
cause the pile to become inoperative.
But from a study of two of these
products, samarium and gadolinium,
they concluded that these rare elements
would not lead to shutdown of the pile.
They failed, however, to observe that
another of the neutron-absorbing
products, a radioactive isotope of
the rare gaseous element xenon, was a
far more potent poisoning agent. The
Clinton staff used the pile, too, for
testing materials to be employed in
construction of the Hanford piles, in-
cluding aluminum, graphite, brass, neo-
prene, bakelite, concrete, and masonite
(for shielding).^*
With completion of the essential as-
pects of the Clinton Laboratories pro-
gram, which ran for more than two
years (1 March 1943-30 June 1945)
and cost approximately $12.3 million
($6.8 million just for salaries), the
University of Chicago was anxious to
be relieved of its responsibility as op-
erator of the plutonium semiworks — a
role it had accepted, but with the
greatest reluctance. Acceding to the
university's request. General Groves
discussed with Compton the question
of transferring operations of the lab-
oratories to an industrial firm. Their
choice was the Monsanto Chemical
Company of St. Louis. Groves dele-
gated to Charles A. Thomas, a com-
pany official who had been associated
with the atomic project in various ca-
pacities and was currently coordinator
of chemical and metallurgical work at
Los Alamos, the task of carrying out
negotiations. On 2 May 1945,
Thomas and Groves met with other
company representatives to approve
an agreement under which Monsanto
would take over operations of the
Clinton Laboratories from the Univer-
sity of Chicago on 1 July. On this
date, Monsanto activated a special di-
vision to handle general administra-
tion, appointing Thomas as division
head, and Martin Whitaker assented
to stay on as director of the laborato-
ries, now to oversee operations for
the production of experimental mate-
rials, such as radioactive isotopes, and
the conduct of radiation research. ^^
The Hanford Production Plant
While Du Pont was building the
semiworks, its TNX Division was
moving ahead with plans and prelimi-
nary preparations for construction of
the production plant. As soon as the
Army acquired the site, both the TNX
chief and Hanford area engineer set
up field organizations that promptly
began overseeing the formidable task
of establishing, in the vast and remote
semidesert region along the Colum-
bia River, the support facilities essen-
tial to construction and operation of a
highly complex industrial enterprise.
Except for railroads and power trans-
mission lines, these facilities were
almost entirely lacking, and Du Pont
and the Army had to devote many
months and considerable manpower
and materials to providing them
before construction could begin on
the plant's permanent structures.'**'
MDH, Bk. 4, Vol. 2, Pt. 1. pp. 6.2-6.8, DASA.
39lbicl., Pt. 2, pp. 3.5-3.6, DASA; Groves Diary,
23-25 Apr and 2 May 45, LRG; Compton, Atomic
Quest, p. 197; Hewlett and Anderson, New World, p.
627.
*° Paragraphs on preliminary measures that Du
Continued
THE PILE PROCESS
211
Clinton Laboratories, consisting of the large pilot pile building, the chemical separation
plant (structure directly to the rear), and other support facilities
Consequently, during much of
1943, Du Pont and its subcontractors
extended and improved existing
roads and railroads, power and tele-
phone lines and sewer and water sys-
tems. They built temporary facilities
that, because of the remoteness of the
site and also the safety and security
Pont and the Army had to carry out in preparation
for construction of the Hanford plutonium plant
based on MDH, Bk. 4, Vol. 5, Sees. 1-5, DASA; Du
Pont Constr Hist, Vols. 1-2, HOO; Matthias Diary,
1943, passim, OROO; Memo, Travis to Marsden
(Ex Off, MD), sub: Status of HEW as of 2 Jun 43,
same date, in Rpt, sub: MD Proj Data as of 1 Jun
43, MDR. See Chs. XIII-XIV and XVI for detailed
account of measures taken to solve the problems in
materials and manpower procurement for Hanford.
requirements, had to be unusually ex-
tensive, including the Hanford camp for
construction workers, numerous build-
ings to house Du Pont and Army ad-
ministrative personnel in the field,
and a variety of shops. Thus, at White
Bluffs, adjacent to the site selected
for the plutonium separation plants,
they built shops to fabricate concrete
pipes, masonite panels, and steel
plate sections; at Hanford, near the
construction camp, erected a shop
to shape, cut, bore, face, and test
graphite; and at strategic points in
the plant construction area, installed
five concrete plants. In addition, they
provided repair and maintenance
212
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
shops, including those for railroad,
automotive, electrical, and construc-
tion equipment.
Du Pont and the Army also were
able to begin some work that related
directly to the construction of the
production plant. For example, the
Army's Seattle district engineer su-
pervised soil tests and borings at the
sites selected for the permanent plant
facilities. These tests and soil samples
provided Du Pont field engineers with
essential data on the weight-carrying
capacities of the ground, especially
significant because many of the plant
installations were enormously heavy;
on rock formations likely to cause dif-
ficulties in excavation work; and on
the availability of aggregate for
making concrete. Field survey teams
inspected existing transmission lines
and road nets in the plant areas,
reaching the conclusion that these fa-
cilities were adequate to meet the re-
quirements for the earliest phases of
plant construction. The area engineer
and Du Pont were able to agree on
optimum locations for most of the
major plant installations, taking into
account also safety, security, transpor-
tation, availability of river water, and
other related factors."*^
Construction
Decisions on the character and lo-
cation of various plant installations
deviated surprisingly little from the
general layout of the production plant
developed back in mid-December
1942 to serve as a guide in site selec-
tion. These early plans had projected
initial construction of at least three
pile and two separation units, with
provision made for the addition, if
need be, of three more piles and an-
other separation unit. In the main,
such changes as the Du Pont design
team did make reflected the subse-
quent decisions to employ water cool-
ing rather than helium for the graph-
ite piles and a bismuth phosphate
precipitation method in the separa-
tion units. ^^
The specific layouts provided for
seven separate process areas, six of
them located generally in the north-
ern half of the 400,000-acre Hanford
reservation and the seventh in a
sector directly north of the operating
village of Richland in the southeast-
ern corner of the reservation (Map 4).
The three production piles were lo-
cated at the points of a triangle
formed by a bend in the Columbia
River near White Bluffs. Designated
as the 100 B (West), 100 D (North),
and 100 F (East) Pile Areas, each was
about 1 mile square and, for reasons
of safety, about 6 miles distant from
any neighboring installation. About
10 miles directly south of the pile
sites were the three separation pro-
cess areas: 200 W (West), 200 E (East),
200 N (North). In the West Area
there were two separation plants, with
a mile of open desert between them;
in the East Area, only a single separa-
tion plant; and in the North Area,
*'MDH, Bk. 4, Vol. 5, pp. 2.1-2.7, DASA; Matth-
ias Diary. 24 Feb 43, OROO. See Chs. XVIII and
XIX for more details on development of process
support facilities for the production plant.
"^This paragraph and the several that follow
based on DSM Chronology, 14 Dec 42, Sec. 25,
OROO; MDH, Bk. 4, Vol. 3, pp. 2.1-2.2., 3.1-3.7.
Apps. A2 and A4 (Maps, Location of Major Instls),
and Vol. 6, pp. 2.1-2.5, DASA; Du Pont Constr
Hist, Vols. 3-4, HOO; Hewlett and Anderson, New
World, pp. 214-22 and map opposite p. 225. See Ch.
XV for general layout of the plant in relation to site
acquisition.
MAP 4
214
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
only the lag-storage facilities for hold-
ing the pile-processed uranium metal
until natural decay reduced its radio-
activity to a point where it could be
sent to the separation plants. In the
seventh process site — the 300 Area —
were the metal testing and fabricating
facilities for preparing uranium to be
charged into the piles.
In scheduling construction of the
various permanent installations, Du
Pont gave priority to the 300 Area,
for it included many installations that
were essential both to building and
operating the rest of the plant. Here,
for example, were facilities for testing
many of the building materials to be
incorporated into the piles and sepa-
ration units, for preparing uranium
metal to be charged into the piles,
and for assembly and calibration of
instruments to control production op-
erations and protect workers against
radiation. One of the buildings
housed an operating test pile. An-
other held the machines that
"canned" uranium in metal contain-
ers to be inserted for processing in
the piles.
In spite of the high priority, how-
ever, Du Pont experienced great diffi-
culty in meeting building schedules in
the 300 Area. Stabilizing designs was
the most frequent cause of delay, at-
tributable primarily to the lack of pre-
vious experience. Related to the
design problem was the frankly exper-
imental character of many of the fa-
cilities. Other factors slowing con-
struction were the shortage of skilled
labor and the classified nature of
much of the work, requiring restric-
tion of access to the 300 Area. Yet
construction crews pressed forward
during the summer and fall of 1943,
turning to the area engineer for as-
sistance. Through Army intervention
with wartime labor officials, the com-
pany secured permission for double
work shifts of nine hours on urgently
required buildings. It also obtained
special handling in procurement of
certain materials. It let subcontracts,
which the area engineer approved, to
firms with specially qualified person-
nel and equipment and speeded up
procedures for approval and issue of
designs. These various expedients,
however, were never quite sufficient
to overcome the bottlenecks, and
work in the 300 Area remained con-
sistently behind schedule.*^
In the three pile areas and the 300
Area, Du Pont faced the problem of
erecting a great variety of facilities.
Each pile area comprised an industrial
complex made up not only of a pro-
duction unit but also of support ele-
ments. The latter included equipment
for pumping vast amounts of water
from the nearby river and subjecting
it to treatment to make it suitable for
cooling the piles. It also included re-
frigeration and helium-purification
units and extensive storage facilities.
Each area, too, had its own facility to
provide steam and some electricity.
Most of the support elements had to
be housed in large industrial-type
buildings, some of them with tall
stacks and water storage tanks on
high steel-frame towers.
For the experienced Du Pont engi-
neers and foremen, much of the work
was sufficiently conventional to
present no serious problems other
43 Dist Engr, Monthly Rpts on DSM Proj, Nov-
Dec 43 and Dec 44, MDR; MDH, Bk. 4, Vol. 5, pp.
6.1-6.4 and Apps. B35-B37 (Tables and Charts,
Constr Progress and Subcontracts for Metal Fab and
Test Area), DASA.
THE PILE PROCESS
215
The 300 Area at HEW, where Du Pont workers manufactured uranium slugs and tested
materials for the piles. The slogan on the water tower reads, "Silence Means Security. "
than those attributable to geographic
isolation and wartime conditions. The
exception was the production piles.
Housed in concrete structures rising
more than 120 feet from the flat
desert floor, these great machines for
transmuting uranium into plutonium
presented construction problems
never encountered before, even by
Du Font's highly competent field
forces. As in the 300 Area, but on a
far vaster scale, the construction
crews not only had to cope with
almost day-to-day changes in design
and specifications but also to adopt
many expedients based upon results
of tests, construction experience, and
limitations of materials.
Using water as a coolant required
installation of a complex system of
river pumps; purification, aeration,
and distillation units; and retention
basins for holding radioactive water
until natural decay permitted its
return to the Columbia. Because
keeping the piles at a proper temper-
ature was crucial, plant designers in-
cluded a refrigeration unit in both the
North (100 D) and East (100 F) Areas
as a precautionary measure to cool
river water during the summer
months; however, to save time, they
216
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
The 100 B Pile Area at HEW, consisting of the production pile (building with single
stack), the steam-electnc plant (building with twin stacks), the pump house (on the Columbia
River), and other support facilities
did not provide this unit in the West
(100 B) Area, gambling on the chance
it might not be necessary.'**
Completion of at least one pile and
a separation unit would start produc-
tion of urgently needed plutonium.
Accordingly, Du Pont and Army offi-
cials agreed to give the West Pile
Area priority, concentrating the limit-
ed materials and manpower available
to expediting its construction. Late in
1943, they scheduled the West Pile
** Paragraphs on construction of production piles
based on MDH, Bk. 4, Vol. 5, pp. 3.2-3.5, 6.5-6.22,
Apps. B38-B42, and Vol. 6, pp. 2.5-2.18, DASA;
Du Pont Constr Hist, Vol. 3, pp. 636-811, HOO;
Hewlett and Anderson, Xew World, pp. 216-18; Dist
Engr, Monthly Rpts on DSM Proj, Jan-Mar 44, MDR.
for operation by June 1944, but by
February, with the plant only 27 per-
cent complete, they rescheduled the
start-up date to mid-August. At the
same time, they established later com-
pletion dates for the North and the
East Pile Areas.
The pace of construction, however,
was disappointing. In general, the fac-
tors that slowed construction in the
300 Area also adversely affected the
pile areas — the isolated location of
the Hanford reservation, aggravating
shortages of manpower and essential
materials, the uniqueness of much of
the construction, and the continuing
need for alterations in orginial de-
signs and specifications.
THE PILE PROCESS
217
As in the 300 Area, the Army gave
its approval to Du Font's various ex-
pedients to speed up construction.
The company instituted shift work in
September 1943, at the same time ex-
tending the regular work week to six
nine-hour days (in some cases,
manual labor temporarily put in ten
hours a day, seven days of the week).
It let more than thirty subcontracts to
firms that would carry out specialized
aspects of the job — for example,
boiler and elevated tank erection,
pipe work, concrete block and cement
brick construction, channel excava-
tion— and thus gained access to des-
perately needed manpower and
equipment. And Du Pont repeatedly
turned to District procurement per-
sonnel in Hanford, Oak Ridge, and
Washington, D.C., for assistance in
obtaining a great variety of scarce ma-
terials and equipment, including such
items as solenoid valves, synthetic
cable, and stainless steel fittings and
valves. The Army also expedited ship-
ment of many crucial items from sup-
pliers distant from the isolated site,
authorizing use of air and rail ex-
press, trucks, and even the Army Air
Forces' Air Transport Command
planes. The Army, too, allowed Du
Font's TNX Division to ease the per-
sistent design bottlenecks by sending
out special personnel to work in the
division engineer's office at the West
File site, authorizing them to make
on-the-spot minor alterations without
clearing them with the home office.
By spring of 1944, these expedients
and a gradual easing of manpower
problems brought a decided improve-
ment in the progress of pile area con-
struction. The district engineer esti-
mated that the West File Area was
nearly half completed, and in Septem-
ber he pronounced it ready to go into
operation. Du Font construction
crews failed to meet the scheduled
October completion date for the
North File, requiring an additional
two months. Then, with the advan-
tage of experience and a far more
adequate supply of labor, they man-
aged to finish the East File Area on
10 February, five days earlier than the
projected completion date. Weeks
earlier, the West File had discharged
its first batch of "active metal," and
plant workers immediately sent it to
the West Separation Area for
processing.'*^
In building the chemical separation
facilities, Du Font crews encountered
many of the same problems they
faced in construction of the produc-
tion piles; however, for the most part,
the problems were never quite as
severe. There was more time to build
the separation units, as no irradiated
slugs would be ready for processing
until weeks or months after the first
pile began to operate, and there were
fewer installations to build, with a
total of thirty-two process buildings in
the three separation areas (200 E, W,
and N) as compared with fifty-three in
the three pile areas. Also, there was
less need for changes in specified
design, construction materials, and
equipment.*^
45 See MDH, Bk. 4, Vol. 5, Apps. B41 (List. Sub-
contractors for Pile Area Constr) and B42 (List, Ma-
terials Used), DASA; Dist Engr, Monthly Rpts on
DSM Proj, Apr, Jun, Nov, Dec 44 and Feb 45, MDR.
*^ Paragraphs on construction of plutonium sepa-
ration units based on MDH, Bk. 4, Vol. 5, pp. 3.5-
3.7, 6.22-6.31, Apps. B43-B46, and Vol. 6, pp.
2.18-2.26, DASA; Du Pont Constr Hist, Vol. 3. pp.
812-983, HOO: Hewlett and Anderson, Xew World.
pp. 219-22: Dist Engr, Monthly Rpt on the DSM
Proj, Jan 44, MDR.
218
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Design problems were a significant
factor in delaying the construction of
the separation plants. Du Pont design
teams could do little toward provid-
ing detailed blueprints and specifica-
tions until project scientists and engi-
neers reached a decision on the exact
chemical process to be employed.
Even after the decision to use the bis-
muth phosphate method, designers
had to await additional data from the
Clinton separation plant, still under
construction. Consequently, in 1943,
Du Pont had accomplished little
beyond site preparation and excava-
tion in the separation plant areas.
Detailed blueprints and specifica-
tions, finally ready by early 1944, pro-
jected construction of four separation
plants — two in the East Area and two
in the West Area (in June, project of-
ficials canceled one East Area unit
when performance data at the Clinton
separation plant indicated it probably
would not be needed). Completed
layouts provided for a variety of pro-
cess buildings and supporting facilities.
The dominant feature of each plant
area was a "cell building," an en-
largement of the six-cell unit in the
Clinton plant. Viewed from a dis-
trance across the level desert, this
massive (800 feet long, 65 feet wide,
and 80 feet high) concrete structure
resembled an ancient mausoleum. A
railroad system interconnected the
various facilities and provided the
means for transporting the thick-
walled portable casks that brought ir-
radiated slugs from the pile areas for
temporary storage in the North Area
and final processing in the East or
West Separation Areas.
Insufficient manpower proved a
major problem never fully solved, but
partially alleviated by Army-sanc-
tioned reallocation of workers from
other parts of the project, very fre-
quent use of shift and Sunday work,
and extended hours. Materials short-
ages, most notably of stainless steel,
resulted in serious delays. With Dis-
trict assistance, Du Pont saved three
to four months in obtaining stainless
steel for more then 700,000 feet of
piping; 150,000 bolts; and other
equipment. The company saved time,
too, by subcontracting (with approval
of the area engineer) work on struc-
tural steel, railroads, pipe and tank
installation, and other aspects of
construction.
The disappointing progress in con-
struction reported by the district en-
gineer at the end of December 1943
clearly indicated that his earlier pro-
jections had been far too optimistic.
Thus in February 1944, Du Pont
issued new start-up dates for various
elements of the pile and separation
areas, which became the basis for
subsequent building schedules. Al-
though plagued by continuing delays
in delivery of stainless steel, Du Pont
completed the two West Area separa-
tion plants and the North Area lag-
storage facilities in December, in time
to accept the first irradiated slugs
from the West Pile. Finally, in early
February 1945, with the East Separa-
tion Area ready to be turned over to
operating crews. Colonel Nichols re-
ported to General Groves that the
Hanford Engineer Works was sub-
stantially completed.'*'^
*'' Dist Engr, Monthly Rpts on DSM Proj, Jan,
Apr, Jun, Dec 44 and Jan 45, MDR.
THE PILE PROCESS
219
Chemical Separation Plant Under Construction at HEW
Operation
Although construction crews were
months away from completing all of
the major elements of the plant, Du
Pont operating crews took the first
step in starting plant operations when
they began charging the West Pile
with aluminum-covered uranium slugs
on 13 September 1944.^^ As with the
electromagnetic and diffusion plants
at the Clinton Engineer Works, pro-
duction of plutonium at Hanford was
a highly technical operation, carried
**^ Except as indicated, subsection on production
plant operation based primarily on MDH, Bk. 4,
Vol. 6, DASA; Du Pont Opns Hist, HOO; Matthias
Diary, Sep 44-Aug 45, OROO; Hewlett and Ander-
son, Xeu' World, pp. 304-10. The Army's activities
in providing essential services are described in sub-
sequent chapters, especially XVI-XX.
out, for the most part, by an operat-
ing force comprised of Du Pont engi-
neers, technicians, and trained plant
personnel. The Army had only a lim-
ited role in plant operations, its pri-
mary function being to maintain those
conditions in the plant areas and
Richland village community that
would enhance in every way possible
production of plutonium. To this end,
the Hanford Area Engineers Office
continued to provide most of the
services instituted in the period of
site development and plant construc-
tion, including security, safety, trans-
portation and communications, per-
sonnel and materials procurement,
fiscal and contract review, and com-
munity support.
220
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Completed Chemical Separation Plants (foreground and background), sennced by
the twin-stacked steam-electnc facility
In mid-August, Du Pont operating
personnel began taking over the West
Pile building, although construction
crews continued to work in the area.
On the seventeenth, Colonel Matthias
notified Colonel Nichols at Oak Ridge
that he thought "anytime after the
27th of August would be a good time
to come out for the initial starting op-
erations." Both Nichols and Groves
found reasons for visiting: ostensibly,
as project officials, to confer on labor
and safety problems; tacitly, as engi-
neers, undoubtedly drawn by the nat-
ural desire to see near completion a
project to which they both had devot-
ed many months of effort. Groves ar-
rived on 1 September and Nichols on
the following day. Matthias took each
on a personal inspection tour. Both
gave special attention to the crucial
preparation of the uranium fuel. They
were pleased to learn that a welding
process had largely eliminated leaks
in the cans, or slugs that held the ura-
nium fuel, a problem that for many
months had posed a threat to the
whole process.'*^
Neither Groves nor Nichols could
be present on 13 September, when
the plant workers started up the West
''^ Matthias Diary, 1-2 Sep 44 and 17 Aug 45
(source of quotation), OROO; Groves Diary, 1 Sep
44, LRG. On uranium canning problem see MDH,
Bk. 4, Vol. 6, pp. 4.7-4.9 and 5.7-5.8, DASA; Hew-
lett and Anderson, Xew World, pp. 223-26 and 303-
04.
THE PILE PROCESS
221
Area production pile for the first
time. But Colonel Matthias was on
hand, as were Compton and Fermi
from the Metallurgical Project and
Greenewalt and Williams from Du
Pont. In a scene somewhat reminis-
cent of that dramatic occasion when
Fermi had achieved the first con-
trolled chain reaction, the redoubta-
ble Italian physicist inserted the initial
uranium fuel can into the production
pile at 5:43 p.m. Thus began the slow
procedure, interrputed by many tests
that would bring the pile, on the fif-
teenth, to that level of reactivity
known as dry critical. At this stage,
without cooling water present in the
fuel tubes, the pile contained enough
uranium to sustain a chain reaction.
Up to this point the pile was perform-
ing precisely as anticipated. ^°
For the next few days the loading
crews, under Fermi's guidance, insert-
ed additional slugs, building up to the
number he estimated would be re-
quired for the pile to be reactive with
cooling water in the tubes. They
reached this number — actually 838
tubes loaded — late in the afternoon of
18 September and began final tests of
the cooling system. These tests and
other measurements continued for
several days, until shortly before mid-
night on the twenty-sixth. At 10:48
P.M., with more than 900 of the 2,004
tubes loaded, they started withdrawl
of the control rods to begin for the
first time plutonium manufacture on a
production scale. But to their sur-
prise, when they tried to increase the
power level, the level of reactivity
began to decline and, by 6:30 p.m. on
the twenty-seventh, the pile shut
down completely. Colonel Matthias
immediately informed General
Groves, who was visiting the Radi-
ation Laboratory in Berkeley. Arriving
in San Francisco on the thirtieth,
Matthias explained to Groves that the
pile operators at first believed that
water, or some other neutron-absorb-
ing substance, had leaked into the
pile. Yet when they found no evi-
dence of this, they concluded that un-
anticipated buildup of a fission by-
product had inhibited reactivity
of the pile. Matthias suggested to
Groves "that certain of the high-ranking
scientists come out to Hanford immedi-
ately to supervise corrective action." ^^
Meanwhile at Hanford, Greenewalt
had turned to the Metallurgical
Project scientists for an explanation.
Nothing in the Clinton operations
seemed to provide an answer, but the
Argoime staff discovered that when
they ran the heavy water pile at its
highest power level for a period of
twelve hours (which they had not pre-
viously done), its reactivity first rose
and then declined following a pattern
similar to that observed at Hanford.
The data from the Argonne pile also
confirmed that the "poisoning" of the
pile was caused by one of the fission
by-products, a radioactive isotope of
the rare gaseous element xenon. At a
meeting with Compton and Metallur-
gical Project scientists in Chicago on
50 Matthias Diary, 13-14 Sep 44, OROO; Rpt,
Matthias to Dist Engr, sub: Monthly Opns, 30 Sep
44, Admin Files, Gen Corresp, SIQIi (Misc), MDR;
Du Pont Opns Hist, Intro, p. 22, and Bk. 4, HOO.
5' Quotation from Matthias Diary, 30 Sep 44
OROO. See also ibid., 16-17, 19-21, 25-29 Sep 44,
OROO; Groves Diary, 29-30 Sep 44, LRG; Dist
Engr, Monthly Rpt on DSM Proj, Sep 44, MDR;
Memo, Matthias to Groves, sub: Status of 100 B
Area Opns, 18 Sep 44, Admin Files, Gen Corresp,
319.1 (Misc), MDR; MDH, Bk. 4, Vol. 6, pp. 4.9-
4.10 and App. Dl (Xenon Poisoning), DASA.
222
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
3 October, Groves was highly critical
of the scientists for not having discov-
ered a phenomenon that might well
prevent production of sufficient plu-
tonium in time to be used in the war.
Sensing the gravity of Groves's
words, Compton left immediately for
Hanford so that he could take direct
action. ^^
By the time Compton reached Han-
ford on the fourth, operating person-
nel working under Greenewalt, Hil-
berry and others had found that by
adding more uranium slugs to the
pile charge they could increase the
power level without inducing a de-
cline in reactivity. This demonstrated
that pile operation at a higher power
level overcame the dampening effects
of xenon poisoning, but it still did
not tell the pile operators how much
more uranium they would have to
load into the pile to raise the power
level to that point where it would effi-
ciently produce plutonium. Nor did it
indicate whether the existing controls
and instrumentation of the pile were
adequate for such operation.
For answers to these critical ques-
tions they had to carry out a time-
consuming series of tests. They
gradually increased the uranium load,
carefully checking and adjusting the
complicated control devices and in-
struments of the pile. By late Novem-
^^ Memo, Compton to Groves, sub: Oscillation
EfTect of W Pile, 30 Oct 44, Admin Files, Gen Cor-
resp, 400.12 (Experiments), MDR; Memos, Walter
Zinn (Argonne Lab scientist) to Compton, 3 Oct 44,
Compton to Groves, sub: Draft Notes to Mtg at Chi-
cago, 3 Oct 44, and Matthias to Groves, sub: Start-
up Opns of 100 B Area, 3 Oct 44, Admin Files, Gen
Corresp, 319.1 (Misc), MDR; Oppenheimer Heanng, p.
174; MDH, Bk. 4, Vol. 2, Pt. 1, pp. 3.13-3.14 and
5.2-5.3, and Pt. 2, pp. 6.4-6.5, DASA; Hewlett and
Anderson, Xew World, pp. 306-07; Dale F. Babcock,
"The Discovery of Xenon-135 as a Reactor Poison,"
Sudear Sews 7 (Sep 64): 38-42.
ber, they showed conclusively that by
fully loading the pile, including slugs
in the extra tubes that Du Font's con-
servative designers had installed
against the advice of the scientists,
the pile would operate at its designed
power level. As a final precaution, the
operating personnel tried operating
the 100 D pile (completed in Novem-
ber) with uranium in all tubes, but
without cooling water. The success of
this dry critical test clearly demon-
strated that the 100 B pile, with the
added protection of cooling water,
was likely to function as designed. On
28 December, the 100 B pile, with all
its 2,004 tubes loaded went into oper-
ation, marking at last the start of full-
scale production of plutonium. ^^
Xenon poisoning and uranium can-
ning problems were not the only
technical difficulties faced by Du
Font's operating personnel as they
took over control of the other units of
the plutonium production plant. But
none of the other start-up problems
posed so serious a threat to the effec-
tive operation of the plant, and Du
Pont engineers found solutions ade-
quate to eliminate or counteract their
adverse effects upon the plutonium
production process.^*
^^ Dist Engr, Monthly Rpts on DSM Proj, Nov-
Dec 44, MDR; Memo, Compton to Mrs. O'Leary,
Attn: Groves, 7 Oct 44, Admin Files, Gen Corresp,
400.17 (Mfg-Prod-Fab), MDR; Groves, Notes on
Conf with Greenewalt in New York, 18 Oct 44,
Admm Files, Gen Corresp, 337 (Confs), MDR;
Memos, Matthias to Groves, sub: Start-up Opns of
100 B Area, 17 and 20 Oct 44, Admm Files, Gen
Corresp, 319.1 (Misc), MDR; Matthias Diary, Oct-
Dec 44, passim, OROO; MDH, Bk. 4, Vol. 6, pp.
4.10-4.12 and App. Dl, DASA; Compton, Atomic
Quest, pp. 191-94; Hewlett and Anderson, \eui
IVorld. pp. 307-08.
^^ For a more detailed account of some of the
other operating problems that developed in Han-
ford pile operations see MDH, Bk. 4, Vol. 6, pp.
4.12-4.19, DASA.
THE PILE PROCESS
223
With attainment in March 1945 of
full-scale production at Hanford, the
plutonium project leaders turned with
renewed energy to establishing firm
production schedules and to reaching
agreement on final specifications for
the product. General Groves, aware
that the war in Europe was rapidly ap-
proaching an end and knowing that
the scientists at Los Alamos would
soon need substantial quantities of
plutonium, arranged with Du Pont to
run the two refrigerated production
piles above their rated operational
level during the spring and summer
of 1945. Carried out at some risk, this
procedure substantially increased
product output and thus provided the
plutonium for an atomic device in
July and for one of two bombs in
August. Through these events, vindi-
cation finally came to the atomic
project leaders on their late- 1942 de-
cision to go ahead with the develop-
ment of the pile process — a decision
that, in the intervening years, when
the plutonium program experienced
repeated setbacks, may well have ap-
peared to many to have been a seri-
ous error in judgment. ^^
^^The correspondence concerning speeding up
plutonium production at Hanford is in two separate
MDR files. Ir Admin Files, Gen Corresp, 400.17
(Mfg-Prod-Fab): Ltrs, Groves to Williams, 13 Jan 45,
and Williams to Groves, 16 Jan 45. In OCG Files,
Gen Corresp, Groves Files, Fldr 5: Ltrs, Williams to
Groves, 14 Feb 45, and Groves to Williams, 15 Feb
45, both Tab I; Memo, Nichols to Groves, sub: Site
W Prod Schedule, 9 Mar 45, Tab J; Ltr, Groves to
Oppenheimer, 22 Mar 45, Tab L; Ltr, Groves to
Williams, 22 Mar 45, Tab J; Ltr, Williams to Groves,
9 Apr 45, 1 ab M; Memo, Groves to Nichols, 20 Jul
45, Tab S. See Ch. XXIV on the relationship be-
tween the development of the implosion bomb at
Los Alamos and the rate of plutonium production at
Hanford.
PART THREE
SUPPORT ACTIVITIES
CHAPTER X
Anglo-American Collaboration
On 15 December 1942, the Military
Policy Committee submitted its first
report to the Top Policy Group on
the "present status and future pro-
gram" of the Manhattan Project. The
report dealt at length with such mat-
ters as scientific progress, the organi-
zation of the project, the need for
funds, the availability of raw materi-
als, and the status of the Anglo-Amer-
ican atomic partnership. The latter,
reported the committee in something
of an understatement, needed "clarifi-
cation." ^ In effect, at the urging of
OSRD Director Vannevar Bush, S-1
Chairman James B. Conant, and
General Groves, the Military Policy
Committee was proposing a reconsid-
eration of American policy on the ex-
change of information and a presi-
dential decision not only on the im-
mediate problem but also on the far-
reaching one of postwar relations in
the field of atomic energy.^
This call to reevaluate Anglo-Amer-
ican collaboration on atomic energy
research and development was a
result of the extensive and rapid ex-
» MPC Rpt, 15 Dec 42, OCG Files, Gen Corresp.
MP Files, Fldr 25, Tab B, MDR.
2 Memo, Stimson, 29 Oct 42, HB Files, Fldr 47.
MDR; MPC Rpt, 15 Dec 42, MDR. This theme is de-
veloped at length in Hewlett and Anderson, New
World, pp. 256-67.
pansion of the Manhattan Project
during the past six months. Until then
the American effort had faced serious
problems and its leaders had been
willing, even eager, to compare notes
with their British counterparts. But,
by the fall, with both the scientific
and engineering programs moving
ahead, the project's military and civil-
ian administrators had made an im-
pressive start at cutting away red
tape, thus assuring the atomic pro-
gram a strong and solidly backed po-
sition in the American war effort. As
the need for British assistance seemed
less urgent, a new attitude about in-
terchange took, hold, and in Decem-
ber project leaders voiced their in-
creasing reluctance, reinforced by
growing security considerations, to
give the British the fruits of American
labors.
Breakdown of Interchange
The atomic partnership between
the United States and Great Britain,
which the allies had begun on a
small scale in the fall of 1940 and
developed into a full exchange pro-
gram by late 1941, first underwent
a slight modification in the early
summer of 1942. Meeting at Hyde
228
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Park on 20 June, President Franklin D.
Roosevelt and Prime Minister Winston
S. Churchill agreed that the United
States should take the major role in
atomic weapons production and that
Great Britain should devote its al-
ready severely limited resources to
the more immediate problems of
fighting the war. In spite of this
somewhat qualified yet carefully con-
sidered arrangement, which would
permit the British to avoid the risk
that large-scale atomic installations
might be damaged or destroyed by
German air raids, Churchill left the
conference with the "understanding
. . . that everything was [still] on the
basis of fully sharing the results as
equal partners," and shortly thereaf-
ter Roosevelt reported to Bush that
he and Churchill were "in complete
accord." ^
It appeared that the two wartime
leaders had reaffirmed continuation
of the free and open exchange of
atomic information; however, devel-
opments in the months following the
Hyde Park summit clearly illustrate
the slow waning of Anglo-American
collaboration. On 5 August, six weeks
after the Roosevelt-Churchill talks,
the British Cabinet officer in charge
of atomic energy, Sir John Anderson,
Lord President of the Council — who
was to the Tube Alloys program what
Secretary Stimson was to the DSM
program — wrote to Bush. He pro-
posed integrating the British gaseous
diffusion project into the American
program and, as a consequence, pro-
viding British representation for the
OSRD S-1 Executive Committee.*
Thus, with the simultaneous transfer
of the British heavy water research
group to Canada, which Sir John con-
currently was suggesting to Canadian
authorities, most Tube Alloys activi-
ties would be removed beyond the
danger of German air attacks. Sir
John also made reference to the
broader question of controlling
atomic energy, both during the war
and afterwards. For this, he recom-
mended immediate implementation of
a joint policy on patents and raw ma-
terials and the early establishment of
an Anglo-American commission on
atomic energy.
Anderson's proposals reached Bush
at a time when the Manhattan Project
still was beset with major difficulties;
scientific problems loomed large, ade-
quate priorities were lacking, no deci-
sion had been reached on site ques-
tions, and even the basic matter of
organization remained unresolved.
Bush, accordingly, was in no position
to commit himself to anything far-
reaching, no matter how much he still
desired British assistance. Finally on
1 September, after checking with
Stimson's assistant, Harvey Bundy,
Bush replied to Anderson, expressing
general approval of close Anglo-
American collaboration but putting
off for the moment any specific im-
plementation of this principle. Only
^ Quotations from Msg, Prime Minister to Harry
L. Hopkins, 27 Feb 43, HLH, and Memo, Roosevelt
to Bush, 11 Jul 42, FDR. See also Ltr, Bush to
Styer, 19 Jun 42, HB Files, Fldr 6, MDR; Ltr, Bush
to President, 19 Jun 42, FDR; Winston S. Churchill,
The Second World War: The Hinge of Fate (Boston:
Houghton Mifflin Co., 1950), pp. 374-81.
■* The terms Tube Alloys and DSM (Development of
Substitute Materials) were the official code names
for the British and American atomic energy projects
in WW II. See Ltrs, Anderson to Bush, 5 Aug 42,
HB Files. Fldr 47, MDR; Cowing, Britain and Atomic
Energy, pp. 188-89; Ceorge C. Laurence, "Canada's
Participation in Atomic Energy Development," Bulle-
tin of the Atomic Scientists 3 (Nov 47): 326.
ANGLO-AMERICAN COLLABORATION
229
the transfer of the heavy water
group to Canada — an action subse-
quently taken — elicited his immediate
concurrence. For the rest, he said, he
would reply "somewhat later when
other broad phases have been
resolved." ^
Within the next few weeks, Manhat-
tan leaders were successful in over-
coming many of the uncertainties. Yet
a strong desire for the kind of close
partnership Anderson had suggested
still was lacking; indeed, when Gener-
al Groves raised the question of
Anglo-American relations at the S-1
Committee meeting in Stimson's
office on 23 September, no one
pressed for immediate action. Be-
cause some members felt working
closely with the British might even
slow down American research, the
committee agreed to delay any deci-
sion until Stimson had talked with the
President. When Bush wrote to An-
derson a week later, he outlined the
new American organization and urged
continued close contact, but he pur-
posely avoided a precise commitment,
pending word from the President.^
It was the end of October before
Stimson was able to discuss the issue
with Roosevelt, for this was a period
when relations between the Secretary
of War and the President were some-
what strained by disagreement over
the forthcoming North African oper-
ations and Stimson saw Roosevelt in-
frequently. Finally, following a Cabi-
5 Ltr, Bush to Anderson, 1 Sep 42, OCG Files,
Gen Corresp, MP Files, Fldr 16, Tab A, MDR. See
also Memo, Bush to Bundy, 1 Sep 42, HB Files,
Fldr 47, MDR.
6 Rpt, Bundy, sub: S-1 Mtg at Secy War's OfTice,
23 Sep 42, HB Files, Fldr 6, MDR; Groves, Xow It
Can Be Told, p. 128; Ltr, Bush to Anderson, 1 Oct
42, HB Files, Fldr 47, MDR; Ltr, Bush to Bundy,
1 Oct 42, HB Files, Fldr 7, MDR.
net meeting on the twenty-ninth, he
seized the opportunity to talk with
Roosevelt alone. After pointing out
that the United States was doing most
of the work on atomic energy, the
Secretary added that Manhattan lead-
ers wanted to learn what commit-
ments the President had made to the
British. When the President assured
him his conversation with Churchill
had been "of a very general nature,"
Stimson suggested going "along for
the present without sharing anything
more than we could help." The Presi-
dent agreed but indicated that he,
Churchill, and Stimson had better talk
over the whole problem before too
long. And there the matter rested."^
Meanwhile, as the American Army
took over management of more as-
pects of the atomic project, the Brit-
ish were becoming disturbed at the
trend toward an independent course
that minimized Anglo-American coop-
eration. Hence, no one was surprised
when Anderson proposed that
Wallace A. Akers, the engineer who
headed the British Directorate of
Tube Alloys (which was comparable
to Conant's position as chairman of
the S-1 Executive Committee) should
visit Washington, D.C. During the
weeks that followed Akers' arrival in
early November, he assiduously con-
sulted with Bush, Conant, and
Groves, seeking ways to link more
closely the American-British atomic
energy programs but achieving only
an agreement on steps to set up and
support the British heavy water re-
search group in Canada.
■' Memo, Stimson, 29 Oct 42, MDR. See Stimson
Diary, HLS, for the state of Stimson's relations with
the President during this period.
230
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
What Akers wanted, based on his
understanding of agreements reached
"at the highest levels," was a "really
cooperative effort between the two
countries." ® This would include joint
research, development, and produc-
tion efforts, and complete interchange
of information on all aspects. British
scientists and engineers would work
in American plants and their Ameri-
can counterparts would do the same
in England. Each country would make
available to the other all atomic data
in its possession, including theoretical
and developmental information, plant
designs, and operational details. This
approach, insisted Akers, was the
most efficient way of assuring success
for the program and, moreover,
would be in harmony with the under-
standing between the President and
the Prime Minister.
The position taken by Bush,
Conant, and Groves — as worked out
among themselves and at meetings of
the Military Policy and S-1 Executive
Committees — fell considerably short
of Akers' view. They were still uncer-
tain about what Roosevelt had told
Churchill, and especially about what
he now desired, and because they
were not convinced that complete co-
operation on all phases of the pro-
gram would necessarily build an
atomic bomb any sooner, they pre-
* Quotation from I.tr, Akers to Conant, 15 Dec
42, HB Files, Fldr 47. MDR. See also Draft Memo,
sub: Interchange With British and Canadians on
S-1, 15 Dec 42, Incl to Ltr, Conant to C.J. Macken-
zie (Canada's Natl Research C^ouncil head), 2 Jan
43. HB Files, Fldr 47, MDR; MPC Rpt, 15 Dec 42,
MDR; Hewlett and Anderson, Xeiv World, pp. 264-
67; Groves. Xow It Can Be Told, pp. 128-29; MPC
Min, 12 Nov and 10 Dec 42. OCG Files. Gen Cor-
resp. MP Files, Fldr 23. Tab A. MDR; DSM Chro-
nology, 14 Nov 42, Sec. 2(0, OROO; Groves Diary,
13 Nov and 8 Dec 42, LRG; Cowing. Bnlaw and
Atomtc Energy, pp. 148-54.
ferred that cooperation and inter-
change of information be restricted to
matters that would be of use to each
partner in the successful prosecution
of the war. The three Americans
also shared the suspicion that Akers'
arguments most probably were "influ-
enced by an undue regard for possi-
ble postwar commercial advan-
tages." ^ Another serious concern was
the growing problem of security,
which would increase if British scien-
tists were permitted access to all
project developments. Finally, too,
joint Anglo-American production cer-
tainly would complicate production
efforts in the United States and might
actually impede, rather than speed
up, the manufacture of atomic bombs.
From the American view, the extent
of atomic cooperation that would be
desirable varied according to the spe-
cific phase of the program concerned.
Bush, Conant, and Groves felt there
should be no interchange whatsoever
on the electromagnetic separation
process, because the British were not
working on this method and presum-
ably had no "need to know." Akers
replied with the argument that com-
plete cooperation had been agreed
upon, regardless of which country de-
veloped the idea or of where the pro-
duction plants were to be built.
Progress on one method had a direct
bearing on work being done on other
methods, he insisted, and there ought
to be full interchange on the electro-
magnetic process.
On the gaseous diffusion process,
where the British had done consider-
able work, the American project lead-
ers were willing to permit unrestrict-
' Groves, Xow It Can Be Told. p. 129.
ANGLO-AMERICAN COLLABORATION
231
ed interchange on experimental and
design problems, but felt that ex-
change of information beyond this
was unnecessary. Akers argued that
limiting exchange on gaseous diffu-
sion to these aspects was not accepta-
ble. The British should be given full
information on construction and op-
eration of the production plant, and
British engineers and scientists actual-
ly should be employed in it. Not only
did this fall within his understanding
of the Churchill-Roosevelt agreement,
but also, as he emphasized, the Brit-
ish were already working on a diffu-
sion plant.
As for production data on LI-235,
Bush, Conant, and Groves held that
none should be given to the British
because of the fact that their interest
in uranium production was only for
experimental purposes. The same ap-
plied to plutonium. The three Ameri-
cans were willing to exchange infor-
mation about scientific findings, but
not about the design, construction, or
operation of production plants. Heavy
water, which might be used to manu-
facture plutonium, fell into the same
category. Akers continued to argue,
although in vain, for full British par-
ticipation in American efforts.
Regarding the work at Los Alamos,
Bush, Conant, and Groves proposed
that there should be no interchange
with the British on information per-
taining to weapon research and devel-
opment. Once again Akers urged full
reciprocity of information, and again
his arguments were without effect.
As a direct result of these extended
discussions, the Military Policy Com-
mittee prepared a comprehensive
progress report on its views on future
U.S. -British relations in the field of
atomic energy. The report, dated
15 December, identified "only one
reason for free interchange of secret
military information between allied
nations — namely, to further the pros-
ecution of the war in which both are
engaged." ^° The consensus of the
committee was that, because the Brit-
ish had now given up any intention of
manufacturing atomic bombs or sig-
nificant amounts of fissionable materi-
als during the war, making produc-
tion data available to them would not
increase their military capabilities. Al-
though the work of British scientists
on diffusion and heavy water was well
along, the results of their research
was not essential to the Manhattan
Project; American efforts in these
areas were considerably advanced. A
complete halt of interchange on diffu-
sion and heavy water would be an in-
convenience, but it would not serious-
ly hinder progress of the American
program.
Nor did the committee see any
moral objections to halting inter-
change. Both countries had worked
on the basic concept, as, indeed, had
the Germans. British studies on diffu-
sion probably had benefited from
American research, and vice versa.
Heavy water had been used in a ura-
nium pile first in France and then in
Britain at the instigation of refugee
French scientists. But only after the
discovery in the United States that
plutonium was fissionable by fast neu-
trons had the British given a high pri-
ority to the heavy water program.
And, as Conant emphasized, the Brit-
ish had not followed a policy of unre-
lOMPC Rpt, 15 Dec 42, MDR. Hewlett and An-
derson (Xeui World, p. 266) state that the section on
interchange in this report was drafted by Conant
with the concurrence of Groves and Bush.
232
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
stricted interchange in the past. They
had been unwiUing to share with
American scientists information about
several of their own developments — a
secret bomb disposal method for
one — because they would not help the
American military effort. ^^
The committee concluded that halt-
ing interchange would not unduly
hinder the Manhattan Project, could
hardly be regarded as unfair, and had
obvious security advantages. Howev-
er, complete cessation certainly would
cause friction with the British and
might adversely affect the flow of ura-
nium from Canada and other areas.
Thus, in its report the committee rec-
ommended that a policy of limited in-
terchange, confined to information
that could be used to win the war,
should be adopted as national policy.
With the approval of three mem-
bers of the Top Policy Group, the
Military Policy Committee report, a
copy of a letter from Akers to Conant
restating the British position, and a
separate summary by Bush of both
British and American views reached
the White House on 23 December.
Two days after Christmas, Stimson
went to see Roosevelt. The British, he
had just learned, had signed a treaty
with the Soviet Union in September
to exchange information on new
weapons, including any that might be
developed in the future. The treaty,
said Stimson, came as a complete sur-
prise and had a direct bearing on any
Anglo-American exchange of informa-
tion. Obviously, it posed the possibil-
ity that weapons development data
passed on to the British eventually
would reach the Russians. This news
apparently reinforced the arguments
set forth by the Military Policy Com-
mittee, and the next day, 28 Decem-
ber, the President told Bush that he
approved the committee's recommen-
dations. ^^ In so doing, he adopted
for the United States a new policy of
limited interchange with its atomic
partner across the Atlantic — one that
restricted collaboration to informa-
tion of use during the war.
The Quebec Agreement
With the United States' position on
limited atomic partnership soHdly af-
firmed, Conant undertook the task of
informing both the British and the
Canadians. The day after New Year's
(2 January 1943), he wrote to Dean C.
J. Mackenzie, head of Canada's Na-
tional Research Council, and ex-
plained how the new American policy
would affect the work on heavy water
under way in Montreal. ^^ Then on the
seventh, he prepared a lengthy
memorandum in which he outlined
the specific regulations for Anglo-
American cooperation. Because Co-
nant never officially presented this
memorandum to the British, it was in
effect only a working paper. Its con-
tents, however, generated consider-
"Note by Conant, in Ms, "Diplomatic History of
the Manhattan Project," p. 7n, HB Files, Fldr 111,
MDR. That the British were unwilling to provide in-
formation on certain of their own developments was
not mentioned in the final version of the report sub-
mitted to the President. See also Memo, Bush to
Hopkins, 26 Feb 43, HLH.
'2 Ltrs, Bush to President, 16 Dec 42, with added
note of 23 Dec 42, and President to Bush, 28 Dec
2, OCG Files, Gen Corresp, MP Files, Fldr 25,
MDR; Ltr, Akers to Conant, and Draft Memo, sub:
Interchange With British and Canadians on S-1,
both 15 Dec 42, HB Files, Fldr 47, MDR; Stimson
Diary, 26-27 Dec 42, HLS; Cowing, Britain and
Atomic Energy, pp. 154-55.
'3 Ltr, Conant to Mackenzie, 2 Jan 43, MDR.
ANGLO-AMERICAN COLLABORATION
233
able controversy, and Churchill later
complained to presidential aide Harry
Hopkins that Conant's memorandum
"drastically [limits] interchange of
technical information and entirely de-
stroys [Roosevelt's] . . . original con-
ception" of a " 'coordinated or even
jointly conducted effort between the
two countries.' " ^^
Although Akers had read Conant's
memorandum, he apparently had
elected to keep his thoughts to him-
self. But on the twelfth, he ran head-
long into the practical effects of the
new policy at a meeting with Colonel
Nichols of the District staff and Perci-
val C. Keith of Kellex. When Akers
asked for full exchange of information
and access for British scientists to the
American diffusion production plant,
Nichols informed him that such re-
quests would be "subject to General
Groves' decision," the outcome of
which the British representative could
by now undoubtedly guess. ^^
The problem came to a head on
the afternoon of the twenty-sixth at a
meeting with Groves and Conant.
Akers protested, argued, and bar-
gained, largely in vain, for a relax-
ation of the American attitude. All he
achieved was Groves's statement that
America probably would be willing to
reopen information exchange on
heavy water production if Great Brit-
ain would make significant use of it
** Quotation from Msg, Prime Minister to Hop-
kins, 27 Feb 43, HLH. Memo, Conant, sub: Inter-
change With British and Canadians on S-1, 7 Jan
43, OSRD; the essential points in this memorandum
are reprinted in Cowing, Britain and Atomic Energy, p.
156. See also Hewlett and Anderson, Mew World, p.
268. Churchill was quoting the letter he received
from Roosevelt, dated 1 1 Oct 41, FDR.
'^Memo for File, Nichols, sub: Mtg With Akers on
Jan 12th, 13 Jan 43, Admin Files, Gen Corresp, 001
(Mtgs), MDR.
before the end of the war and would
indicate a willingness to make slight
adjustments regarding interchange on
the diffusion process. On other mat-
ters— electromagnetic separation, the
use of heavy water in a chain reaction,
the furnishing of uranium metal and
purified graphite to the Canadian
group, the chemistry of plutonium,
and the design and construction of a
weapon — the American project lead-
en; remained adamant. Unsuccessful
in his mission, Akers returned home
to England a few days later. ^^
Meanwhile, word had reached the
Moroccan town of Casablanca, where
Churchill and Roosevelt were meeting
to discuss Anglo-American strategy.
During the mihtary talks the subject
of atomic energy was not even men-
tioned; but, in confidence, the Prime
Minister asked the President about
the American position on Tube
Alloys. Roosevelt's reply, as the Prime
Minister related it to Bundy, was to
assure Churchill again that atomic
energy was a joint enterprise. Hop-
kins, also present during the ex-
change, quickly added that the prob-
lem could be easily straightened out
as soon as the President returned to
the White House. ^'
'^Note by Akers and attached extract of his cable,
26 Jan 43, Incls to Ltr, Akers to Groves, 29 Jan 43,
Admin Files, Gen Corresp, 091 (British), MDR;
Groves Diary, 26 Jan 43, LRG; Msg, Prime Minister
to Hopkins, 27 Feb 43, HLH.
'^ Dates of Casablanca Conf: 14-24 Jan 43.
Msg, Prime Minister to Hopkins, 16 Feb 43, and
Memo, J. M. Martin (principal private secretary for
Churchill at Casablanca) to Hopkins, 23 Jan 43,
HLH; Memo, Bundy, sub: 22 Jul 43 Mtg at 10
Downing Street, HB Files, Fldr 47, MDR; Richard
C. Tolman, sub: Diary of Trip to England, 29 Oct
43, Admin Files, Gen Corresp, 334 (British Inter-
change), MDR; Hewlett and Anderson, Xew World,
p. 270. While Hewlett and Anderson accept Bundy's
Continued
234
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
The two leaders parted, Roosevelt
to Washington and Churchill to
London via the Middle East. Soon
after returning home in early Febru-
ary, the Prime Minister apparently re-
ceived a thorough briefing on Akers'
disturbing experience in the United
States and, on the sixteenth, he
cabled Hopkins to remind him of his
assurances given at Casablanca. "The
American War Department," com-
plained Churchill, "is asking us to
keep them informed of our experi-
ments while refusing altogether any
information about theirs." ^^
That Churchill had expressed his
perturbation to Hopkins rather than
directly to Roosevelt indicates the im-
portance he attached to the problem.
The Prime Minister was well aware
of Hopkins's close relationship with
Roosevelt and regarded him as a
"most faithful and perfect channel of
communication."^^ A personal repre-
sentation by "Lord Root of the
Matter," as he once called Hopkins,
would be more effective than a simple
cable direct to the President. Yet, cu-
riously enough, Hopkins apparently
knew little about atomic energy mat-
ters. Certainly his ready assurances at
Casablanca indicated his unfamiliarity
with the complexities of the problem. ^°
statement in his memorandum of 22 Jul 43 that at
Casablanca Churchill spoke directly to both Roose-
velt and Hopkins on Tube Alloys, Margaret Cowing
{Britain and Atomic Energy, p. 159) suggests that the
discussion may have been only between Churchill
and Hopkins.
1^ Msg, Prime Minister to Hopkins, 16 Feb 43,
HLH.
19 Winston S. Churchill, The Second World War: The
Grand Alliance (Boston: Houghton Mifflin Co., 1950),
pp. 24-25.
2° Robert E. Sherwood, Roosevelt and Hopkins: An
Intimate History (New York: Harper and Brothers,
1948), p. 5. The first reference to atomic energy in
But in the weeks that followed
Churchill's cable, Hopkins set about
familiarizing himself with the problem
of Anglo-American interchange. Now
well briefed by Conant and Bush, and
perhaps by Lt. Gen. Brehon B.
Somervell, the Army Service Forces
(ASF) commander, he replied to
Churchill's continued prodding with
cables that avoided a direct answer
and thus left the American position
unchanged. Bush, in turn, reviewed
the policy separately with Conant and
Stimson and collectively with fellow
members of the Military Policy Com-
mittee at its 30 March meeting.
"None of us," he reported to Hop-
kins on 31 March, "can see that the
present policy, which was approved
by the President after it had had the
careful review and approval of Gener-
al Marshall, Secretary Stimson, and
Vice President Wallace, is in any way
unreasonable, or such as to impede
the war effort on this matter. Neither
can we see that the application
is at present unwise." Supporting a
strongly worded memorandum from
Conant, which he enclosed. Bush
stressed, as had Conant also, the
growing American belief that British
desire for information about the
American program was not for war-
time weapons development but,
rather, for postwar commercial and
industrial application. This might per-
haps be considered in another con-
text, said Bush, but it should in no
way be allowed to interfere with the
Manhattan Project or with the
"proper conduct of the secure devel-
opment of a potentially important
the Hopkins papers (HLH) appears on 23 Jan 43,
during the Casablanca Conference.
ANGLO-AMERICAN COLLABORATION
235
weapon." ^^ Apparently convinced of
the correctness of the American
policy, Hopkins allowed the matter to
drag on through April without resolu-
tion. Even though he had promised
British Foreign Secretary Anthony
Eden a telegram that would give his
"views fully," he never sent it.^^
Except for limited exchange be-
tween the Montreal and Chicago
groups, Anglo-American collaboration
slowed almost to a standstill. Sir John
Anderson, fearing a weakening of
Churchill's negotiating position, re-
fused an American request that chem-
ist Hans von Halban, a refugee from
the French atomic program, be per-
mitted to come to New York to confer
with Fermi and Urey on heavy water
problems, and in partial reaction the
Military Policy Committee reduced
American support of the heavy water
project at Montreal. Hopkins's pro-
crastination did nothing to improve
the steadily deteriorating situation,
and British scientists began thinking
seriously of building their own U-235
plant. During this time, the only
answer the British received to
Churchill's protests was an indirect
one: an explanation of the American
position by Bush and Conant to Dean
Mackenzie of the Canadian project as
he passed through Washington, D.C.,
on his way to London to discuss the
problem with his British colleagues.
^* Quoled phrases from Memo, Bush to Hopkins,
31 Mar 43 (enclosed is Memo, Conanl to Bush, 25
Mar 43), HLH. See also Msgs, Prime Minister to
Hopkins, 16 Feb, 27 Feb (two), 20 Mar, 1 Apr 43,
and Hopkins to Prime Minister, 24 Feb and 20 Mar
43, Memos, Bush to Hopkins, 26 Feb 43, and Hop-
kins to Lord Halifax (British ambassador to U.S.),
13 Apr 43. All in HI.H. See also MPC Min, 30 Mar
43. MDR
22 Memo. Halifax to Hopkins, 14 Apr 43; Msg,
Hopkins to Kden, 15 Apr 43 (source of quotation).
Memo, Hopkins to Halifax. 15 Apr 43. All in HI.H.
By then, however, Churchill had
decided to pay a personal call on
Roosevelt. ^^
The Trident Conference, as
Churchill dubbed his third major war-
time meeting with Roosevelt, began
in Washington on 12 May; however, it
was not until the twenty-fifth, his last
day in the national capital, that he
raised the problem of atomic inter-
change. Hopkins telephoned Bush,
and that afternoon the two Americans
met with Professor Frederick Linde-
mann (Lord Cherwell), the British
physicist who was one of Churchill's
closest advisers. An able negotiator,
Lord Cherwell had already formed
some strong opinions about who was
responsible for the new American po-
sition. The whole situation, he had
told Canadian Prime Minister William
Lyon Mackenzie King a week earlier,
was the fault of the American Army,
which had taken over the atomic
energy program from the scientists.
"They are as difficult about it in their
relation with Britain," King noted in
his diary, "as Stalin had been in tell-
ing of what was being done in
Russia." ^^
23 Memo, Bush to Hopkins, 27 Apr 43, HLH;
Churchill, Hinge of Fate, pp. 782-83; Cowing, Bntam
and Atomic Energy, pp. 157-64.
2"* Qiioted from J. W. Pickersgill, The Mackenzie
King Record. 1939-19-f-t. Vol. 1 (Toronto: University
of Toronto Press, 1960), p. 503. For Trident, see
Churchill, Hinge of Fate. Ch. 20, and Maurice Mat-
loff. Strategic Planning for Coalition Warfare. 1943-
1944. U.S. Army in World War II (Washington,
D.C.: Government Printing Office, 1959), Ch. VI.
For Cherwell, see R. F. Harrod, The Prof: A Personal
Memoir of Lord Cherwell (London: Macmillan and (^o.,
1959). A less sympathetic view is C. P. Snow, Science
and Government (Cambridge, Mass.: Harvard Univer-
sity Press, 1961). This account of the meeting at
Hopkins's oflice is based on Memo for File, Bush,
sub: Conf With Harry Hopkins and Lord Cherwell
at White House, 25 Mav 43, Ind to Memo, Bush to
Continued
236
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
The meeting resulted in an im-
passe, although it did clarify matters
to some extent. After Bush restated
the American position and explained
the reasons, Lord Cherwell pressed
for a change. He denied Great Britain
was aiming at any postwar commer-
cial advantage, but admitted the Brit-
ish wanted to be in a position to build
atomic weapons once the war was
over. During the war, he added, his
government was willing to depend on
the United States for these weapons,
but in the postwar period it could not
afford to rely on any other power for
military security. Bush and Hopkins
immediately pointed out this was a far
different question than had been pre-
viously discussed. It concerned broad-
er problems of postwar international
relations, the solutions to which,
Hopkins noted, the Roosevelt admin-
istration constitutionally could not
commit its successor. Lord Cherwell
indicated that if the United States re-
fused to provide the desired informa-
tion on atomic production, the British
might — to guarantee their own future
security — have to undertake an imme-
diate production program of their
own, diverting whatever was neces-
sary from the main war effort. But he
did not put this in the form of an out-
right threat.
The main question had at last been
isolated: Was it necessary for America
to provide Britain with production
data during the war to ensure her
military security in the postwar era? It
was clear to Hopkins where the prob-
lem lay and he told Bush to do noth-
ing further on the matter. Presum-
Hopkins, 26 May 43, HLH. A copy of Bush's memo-
randum of 25 Mav is also in Ms, "Diplomatic Hist of
Manhattan Proj,' Ann. 9, HB Files, Fldr 111, MDR.
ably, Hopkins would take it up with
the President.
That evening, Churchill apparently
discussed the problem privately with
Roosevelt. There is no record of this
meeting. Indications are that the
President was not informed of the
Bush-Hopkins-Cherwell conference.
Once again he showed his earlier will-
ingness to cooperate fully with the
British. The next morning Churchill
cabled Sir John Anderson that the
President, foreseeing that the general
agreement on wartime interchange
would be fulfilled by the almost cer-
tain use of the bomb in the war, had
"agreed that the exchange of infor-
mation on Tube Alloys should be re-
sumed and that the enterprise should
be considered a joint one." ^^
Whatever Roosevelt told Churchill,
he did not pass it on to Bush or Stim-
son. How much Hopkins knew is not
clear, but he was at least aware that
Roosevelt had promised Churchill
something. A month after Trident,
Bush had his first opportunity to brief
the President on this talk with Lord
Cherwell. Roosevelt seemed im-
pressed, but he said nothing about
any arrangements he might have
made with the Prime Minister and
simply told Bush to "sit tight" on in-
terchange.^®
2^ Msg, Prime Minister to Lord President (Sir
John Anderson), 26 May 43, quoted in Churchill,
Hitige of Fate. p. 809. See also Ltr, Roosevelt to
Bush, 20 Jul 43; Ltr, Cherwell to Hopkins, 30 May
43; Msg, Prime Minister to Hopkins, lOJun 43. All
in HLH. The latter message implies that Hopkins
may have been present at the Churchill-Roosevelt
discussion. On Roosevelt's ignorance of the Bush-
Hopkins-Cherwell conference, see Hewlett and An-
derson, Xew World, p. 274.
2 6 Memo for File, Bush, sub: Conf With Presi-
dent, 24 Jun 43, quoted in Hewlett and Anderson,
Continued
ANGLO-AMERICAN COLLABORATION
237
Meanwhile, the British had sent
Akers to Ottawa, and during his stay
in the Canadian capital, Churchill had
cabled Roosevelt once again, seeking
to implement their agreement on
atomic energy. He received no satis-
factory reply. Finally in mid-July, the
President asked Hopkins what to do
about interchange. Hopkins replied
that he [Roosevelt] had "made a firm
commitment to Churchill in regard to
this when he was here and there is
nothing to do but go through with
it." ^' Accepting this fact, on the twen-
tieth the President cabled Churchill
that he had arranged matters "satis-
factorily." The same day he wrote
Bush, who was in London attending
to other scientific matters, that be-
cause "our understanding with the
British encompasses the complete ex-
change of all information," he should
"renew . . . the full exchange of in-
formation with the British Govern-
ment regarding the Tube Alloys." ^®
The President's letter should have
settled the matter. Yet, by one of
those peculiar quirks of fate, the new
directive did not reach the OSRD di-
rector in time to be effective.
On the fifteenth, an unexpected
confrontation by an agitated Prime
Minister, who daily was becoming
more and more disturbed over the in-
Xew World, p. 274. Stimson's diary does not indicate
that he discussed interchange with Roosevelt during
this period. Hopkins's probable knowledge may be
inferred from Msg, Prime Minister to Hopkins, 10
Jun 43; Msg, Hopkins to Prime Minister, 17 Jun 43;
Ltr, Cherwell to Hopkins, 30 May 43. All in HLH.
"Memo, Hopkins to President, 20 Jul 43, HLH.
See also Msg, Former Naval Person (Churchill) to
Roosevelt, 9 Jul 43, FDR; Memo, Roosevelt to Hop-
kins, 14 Jul 43, FDR; Cowing, Britain and Atomic
Energy, pp. 164-65.
"Msg, President to Former Naval Person, 20 Jul
43, and Ltr, Roosevelt to Bush, 20 Jul 43, HLH;
Hewlett and Anderson, \ew World, p. 275.
terchange problem, had occasioned
Bush to refer him to Secretary Stim-
son, who, with Bundy, also was
visiting England. Two days later,
Churchill asked Stimson to "help him
by intervening in the matter." ^^ Har-
boring strong feelings about the value
of close Anglo-American collabora-
tion on all wartime activities, Stimson
arranged for a conference on the
twenty-second. Shortly before the
meeting, the Secretary met with Bush
and Bundy. Particularly concerned
about the need for careful interna-
tional cooperation under the new
world conditions that atomic energy
would create, Stimson questioned
Bush carefully and forcefully, and at
times the OSRD director felt almost
as if he were being cross-examined by
the distinguished lawyer. When
Bundy suggested constitutional limita-
tions on the President's power to
make long-term commitments, Stim-
son dismissed this as "the argument
of a police-court lawyer." But in the
end, he agreed that Bush should
present the American position to the
British as he saw it.^°
That afternoon, the three Ameri-
cans sat down with the Prime Minis-
ter, Anderson, and Lord Cherwell.
Because Churchill, for reasons
that are not known, had not yet
received Roosevelt's cable, none of
the participants were aware of the
^'Quotation from Stimson Diary, 17 Jul 43, HLS.
See also Rpt, Stimson to Roosevelt, sub: Trip to
United Kingdom, attached to entrv of 10 Aug 43,
HLS.
^"Quotation from Elting E. Morison, Turmoil and
Tradition: A Study of the Life and Times of Henry L Stim-
son (Boston: Houghton Mifflin Co., I960)', p. 617.
See also ibid., p. 618; Stimson Diary, 22 Jul 43,
HLS; Hewlett and Anderson, Xeu> World, pp. 275-
76.
238
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
President's decision to reaffirm a
policy of full interchange. Churchill
opened the session with a vigorous
defense of the British position, em-
phasizing his fear that unless Great
Britain had the means and knowledge
of how to develop atomic weapons,
Germany or Russia might "win the
race for something which might be
used for international blackmail." He
seemed particularly concerned about
the possible atomic threat from
Russia, which appeared to be at the
root of his worries about the postwar
world. If the United States would not
"interchange fully," he said. Great
Britain would have to undertake its
own development "parallel" to that of
the Manhattan Project, no matter how
this might affect the rest of the war
effort. 31
As diplomatically as possible, Bush
attempted to restate the American
view and to point out that the main
U.S. -British differences lay in the area
of "postwar matters." Stimson sec-
onded this approach by reading aloud
a short, clear analysis of the situation
he had written in preparation for the
meeting. 3^ The Prime Minister then
proposed a five-point agreement to
be signed by Roosevelt and himself.
Under this agreement, there would be
"free interchange" of atomic informa-
tion within a "completely joint enter-
prise"; neither government would
"use this invention against the other";
neither would "give information to
any other parties without the consent
of both"; neither would use atomic
weapons "against any other parties"
without the other's consent; and, fi-
nally, "in view of the large additional
expense incurred by the U.S.," British
commercial or industrial use "should
be limited" in whatever way the Presi-
dent deemed "fair and equitable." ^^
Stimson agreed to pass these pro-
posals on to the President. He could
not comment officially, but he was
obviously pleased. "Satisfactory at-
mosphere produced," ^^ he noted in
his diary. Bush, too, felt somewhat
better, for while the Prime Minister's
proposed free interchange still
seemed dangerous from a security
viewpoint, Churchill had made a con-
vincing disclaimer of any postwar
commercial motivations. When
Churchill received Roosevelt's 20 July
message several days after the confer-
ence, he was unable to determine
from the general terms of the mes-
sage that the President, in fact, had
completely reversed the American po-
sition. Only Roosevelt's explicit in-
structions in his 20 July letter to Bush
would have indicated this shift in
policy. But the letter of instructions,
which the OSRD cabled to Bush on
the twenty-eighth, was somehow gar-
bled in transmission or decoding; it
ordered Bush to review, rather than
renew, full interchange. Even this mild
wording gave Bush some concern, but
not nearly as much as the original
version would have.^^
3 1 Memo for File, Bundy, sub: 22 Jul 43 Mtg at 10
Downing Street, MDR. See also Bundy's penciled
notes written at the meeting, same file. On the Rus-
sian threat see Pickersgill, Mackenzie King Record, pp.
532 and 543.
3^ Stimson's penciled notes are filed in HB Files,
Fldr 47, MDR.
33 Memo for File, Bundy, sub: 22 Jul 43 Mtg at 10
Downing Street, MDR.
34 Stimson Diary, 22 Jul 43, HLS. See also draft
of Msg, Stimson to Marshall, unsigned but written
m the Secretary's hand, HB Files, Fldr 47, MDR.
35 Hewlett and Anderson, New World, p. 277; Msg,
President to Former Naval Person, 20 Jul 43, HLH;
Conlinued
ANGLO-AMERICAN COLLABORATION
239
On the same day Churchill ap-
proved a formal draft of the British
proposal, which he forwarded to
Stimson on the thirtieth. This version,
drafted by Anderson and revised by
Churchill, was basically the same as
the one the Prime Minister had pre-
sented orally. It eliminated the specif-
ic references to 'Tree interchange"
within a "completely joint enter-
prise," substituted a general state-
ment about pooling "all available
British and American brains and re-
sources," and made even more explic-
it the British disclaimer on "industrial
and commercial aspects." Sir John
Anderson would go to Washington
at once, said Churchill, to help ar-
range "for the resumption of
collaboration." ^^
Back in Washington, Bush learned
the actual wording of the President's
instructions. He also found awaiting
him a strong memorandum from
Conant, which reiterated the Harvard
president's "conviction . . . that a
complete interchange with the British
is a mistake" and authorized Bush, if
he saw fit, to quote him "on this
point to those in higher authority." ^'^
This proved unnecessary, for the Brit-
ish remained unaware of Roosevelt's
Msgs. Bush to Bundv, 27 and 28 Jul 43, HB Files,
Fidr 47, MDR; Ltr, Carroll L. Wilson (Ex Asst to
Bush) to Roosevelt, 28 Jul 43, FDR.
36 Ltr, Churchill to Stimson, [30] Jul 43 (date de-
rived from internal evidence), and Ind (draft heads
of agreement between President of the United
States of America and Prime Minister of Great Brit-
ain, 28 Jul 43), HB Files, Fldr 47, MDR. See also
Cowing, Britain and Atomic Energy, p. 168; Msgs,
Roosevelt to Churchill, 26 Jul 43, and Churchill to
Roosevelt, 29 Jul 43, FDR.
^■'Memo, Conant to Bush, sub: Exchange of Info
on S-1 Proj With British, 30 Jul 43, HB Files, Fldr
47, MDR.
actual position and continued negoti-
ating on the basis of American policy
as explained by Bush in London.
With the approval of Secretary
Stimson, Bush carried out final nego-
tiations with Anderson. He kept in
close touch with the Secretary,
Bundy, and General Marshall — Vice
President Wallace and General
Groves were out of town — and espe-
cially with Conant, who participated
in the opening talks with Anderson
on 3 August. Stimson and Marshall
also had lunch with the British repre-
sentative, but their conversation ap-
pears to have been more of a general
discussion than a bargaining session.
On the sixth, after an exchange of
letters. Bush and Anderson came to a
meeting of minds on a proposed
agreement to be signed by Roosevelt
and Churchill. This agreement was
based on the four-point draft
Churchill had sent Stimson a week
earher, but added a fifth section "to
ensure full and effective collabora-
tion." This section provided for es-
tablishment of the Combined Policy
Committee, which would determine
the role of each country, maintain an
overall review of the project, allocate
critical supplies, and have the final
say in interpreting the joint agree-
ment. There would be interchange on
all sections of the project. Details
would be regulated by ad hoc agree-
ments, subject to committee approval,
and Bush stipulated that information
made available to committee mem-
bers would be general in nature. An-
derson also agreed that the commit-
tee would not interfere with the
240
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Army's control of the Manhattan
Project.^®
The next day, Bush forwarded the
draft agreement and copies of his cor-
respondence with Anderson to the
President. He acknowledged the de-
layed directive of 20 July sent to him
by Roosevelt, but then went on to
state his conviction that his under-
standing with Anderson "provided
adequately for appropriate inter-
change, with due regard to the main-
tenance of security, and with the
object of providing the British with all
of the information they can utilize in
this connection in the prosecution of
the war, in return for the benefit of
the deliberations of their own scientif-
ic and technical groups." ^^ In a sepa-
rate note to Bundy, Bush urged that
Secretary Stimson "impress upon the
President" the desirability of limiting
agreements to wartime objectives and
the dangers of making commitments
for the postwar period. "^^
General Marshall, too, urged cau-
tion, and Bundy strongly recommend-
ed to Stimson that the President talk
with Bush, or at least carefully read
the Bush-Anderson correspondence,
before signing any agreement with
**Ltrs, Anderson to Bush, 4 (source of quotation)
and 6 Aug 43, and Bush to Anderson, 6 Aug 43,
HB Files, Fldr 47, MDR; Ltr, Bush lo Anderson,
3 Aug 43, and IncI (extracts from report dated 15
Dec 42), copy in U.S. Department of State, Confer-
ences at Washington and Quebec, 19-43. Foreign Rela-
tions of the United States, [Diplomatic Papers],
1943 (Washington, D.C.: Government Printing
Office, 1970), pp. 640-41; Memo, Conant to Bush,
sub: Exchange of Info on S-1 Proj With British, 6
Aug 43, HB Files, Fldr 47, MDR; Ltr, Bush to Presi-
dent, 7 Aug 43, FDR; Stimson Diary, 5 Aug 43.
HLS; Groves Diary, 3-6 Aug 43, LRG. See also
Hewlett and Anderson, New World, pp. 277-79;
Gowing, Bntam and Atomic Energy, pp. 168-71.
3» Ltr, Bush to President, 7 Aug 43. FDR.
*° Ltr, Bush to Bundy, 6 Aug 43, HB Files, Fldr
47, MDR.
Churchill. He emphasized to the Sec-
retary that Bush and Conant were
trying to protect Roosevelt from any
possible charges that he was exceed-
ing his legal authority or acting from
any other motivation than a desire to
win the war. Strongly impressed by
Bundy's urging, Stimson went to the
White House on 10 August, deter-
mined to make these points. Whether
or not he did is unclear, but he did
describe the negotiations with
Churchill and raise at least one
caveat. He asked the President wheth-
er a problem might arise from
Churchill's proposal that neither
country would use atomic energy
against third parties without the con-
sent of the other. Roosevelt indicated
he saw no danger in the provision. '^^
Even as Stimson met with
Roosevelt, the Prime Minister was set-
tling himself in Quebec, in prepara-
tion for meeting with the President at
the Quadrant Conference that would
begin in a few days. Only then did
General Groves, who had been busy
on inspection trips to the West Coast
and New York, learn of the forthcom-
ing conference and realize the pro-
posed agreement would be discussed.
More than half a year had passed
since the President had had a report
on the Manhattan Project from the
Military Policy Committee, and
Groves felt Roosevelt should have an
up-to-date summary before his meet-
ing with Churchill. Groves drew up a
twenty-page report; cleared it with the
committee; and, on 21 August, with-
■'^ Memo, Bundy to Stimson, 6-7 Aug 43, and at-
tached penciled notes by Stimson; Memo, Bundy to
Marshall, 6 Aug 43, and penned comment by Mar-
shall. Both in HB Files, Fldr 47, MDR. See also
Stimson Diary, 10 Aug 43. HLS.
ANGLO-AMERICAN COLLABORATION
241
out showing it to Wallace or Stimson,
directed Colonel Nichols to hand
carry it to General Marshall in
Quebec, where Quadrant was already
under way. The report, which covered
all Manhattan activities, included a
brief summary of relations with the
British and, in the light of the Bush-
Anderson negotiations, asked the
President for further instructions. But
when Colonel Nichols arrived in
Quebec with the document. General
Marshall informed him that Roosevelt
and Churchill had already signed an
agreement on atomic energy. '^^
The two leaders had approved the
proposed agreement at Hyde Park,
where Churchill had visited Roosevelt
from 12 to 14 August.*^ But it was
not until the nineteenth, in Quebec's
historic fortress known as The Cita-
del, that they actually affixed their
signatures to the "Articles of Agree-
ment Governing Collaboration Be-
tween the Authorities of the U.S.A.
and the U.K. in the Matter of Tube
Alloys," or, simply, the Quebec
Agreement. It called for the earliest
possible completion of the Tube
Alloys project, ruled out "duplicate
plants on a large scale on both sides
of the Atlantic," and acknowledged
the "far greater expense" borne by
the United States. It agreed "never"
to "use this agency against each
other" and "not to use it against third
parties without each other's consent,"
and it prohibited giving "any informa-
tion about Tube Alloys to third par-
ties except by mutual consent." In
view of the heavier burden carried by
*2 MPC Rpt, 21 Aug 43, OCG Files, Gen Corresp,
MP Files, Fldr 25, Tab E, MDR; Groves, AW It Can
Be Told, p. 135; Groves Diary, 4-23 Aug 43, LRG;
MPC Min, 13 Aug 43, MDR.
" Pickersgill, Mackenzie King Record, p. 543.
the United States, "any post-war ad-
vantages of an industrial or commer-
cial character" would be "dealt with
... on terms to be specified by the
President . . . ," and the Prime Min-
ister specifically disclaimed "any in-
terest" in them "beyond what may be
considered by the President ... to
be fair and just and in harmony with
the economic welfare of the world."
Finally, using the Bush-Anderson ar-
rangement for interchange as the
basis, the Quebec Agreement estab-
lished the Combined Policy Commit-
tee in Washington, D.C., and desig-
nated six members.
On the choice of members,
Roosevelt apparently did not consult
any of his advisers, except possibly
Hopkins. American members were
Stimson, Bush, and Conant; British
members were Field Marshal Sir John
Dill, head of the British Joint Staff
Mission in Washington, and Col. John
J. Llewellin, Washington representa-
tive of the British Ministry of Supply.
The sixth member was Canada's Min-
ister of Munitions and Supply, Clar-
ence D. Howe, an American-born en-
gineer whose appointment Churchill
had cleared earlier with Mackenzie
King. The British had felt that the Ca-
nadians, even though they were not
a party to the Quebec Agreement,
should have representation on the
high-level committee because they
would be making important contribu-
tions to the atomic energy project
in Montreal.
The Quebec Agreement set the of-
ficial basis for Anglo-American atomic
relations for the rest of the wartime
period. It did not establish the free
and open interchange the British had
desired and that the President,
242
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
indeed, had offered in his letter of
20 July. It called for "full and effec-
tive collaboration," and both Roose-
velt and Churchill believed they had
provided the basis for it; however, in
reality, collaboration would comprise
only what was necessary for the war
effort, avoiding any form of inter-
change that might conceivably hinder
progress of the Manhattan Project/^
Implementing the Agreement
Combined Policy Committee
Despite pressure by Bush and Gen-
eral Marshall, and the presence in
Washington of Akers and four leading
British scientists who were anxious to
implement interchange,^^ two weeks
passed before the President revealed
the details of the Quebec Agreement
to Manhattan officials, including par-
ticulars on the Combined Policy Com-
mittee. With Churchill visiting at the
White House, the President first
wanted the Prime Minister's concur-
rence in the contents of the Military
Policy Committee's report before any
meeting of the new committee took
place. '^^
"■•The American original of the Qiiebec Agree-
ment is in HB Files, Fldr 49. MDR. The full text
was published in the Xew York Times, 6 Apr 54. A
copy of the agreement is also in U.S. Department of
State, Conferences at Washington and Quebec. 1943, pp.
1117-19. Available records do not indicate that
Roosevelt discussed the Quebec Agreement with
any American from the time of his conference with
Stimson on 10 August until after the document was
signed.
"^Sir Francis Simon of Oxford University, Sir
James Chadwick of Cambridge University, and Sir
Rudolph E. Peierls and Marcus L. f2. Oliphant, both
working at the University of Birmingham.
*«MPC Rpt 21 Aug 43, MDR; Memo, Bush to
President, sub: Tube Alloys-Interchange With Brit-
ish, 23 Aug 43, HLH; Memo, Marshall to President,
6 Sep 43, OCG Files, Gen Corresp, MP Files, Fldr
On 8 September, after lunch at the
White House, Stimson discussed the
Quebec Agreement with Roosevelt
and Churchill. Having learned only
that morning that he was to be chair-
man of the Combined Policy Commit-
tee, he asked permission to name ASF
chief of staff, Maj. Gen. Wilhelm D.
Styer, as his deputy — a request the
President and Prime Minister readily
approved. ^"^
An hour or so later, the first infor-
mal meeting of the Combined Policy
Committee took place in the Penta-
gon. One reason for the hasty con-
vening was to accommodate the four
British scientists, waiting impatiently
to exchange data. Bush was out of
town and Howe had not yet arrived
from Canada, but Stimson, Conant,
Dill, and Llewellin proceeded without
them. General Styer was also present,
as was Bundy, acting as secretary.
They formed a technical subcommit-
tee, with Styer as chairman, to make
recommendations on the American
and British programs, to prepare di-
rectives for interchange of research
and development data, and to pro-
pose ad hoc arrangements for inter-
change in the area of plant design,
construction, and operation. The sub-
committee consisted of three scien-
tists who had a thorough knowledge
of the American, British, and Canadi-
an projects — Richard C. Tolman, who
25E, MDR; Memo, Col Frank McCarthy (Gen Staff
Secy, OCS) to Marshall, 6 Sep 43 (with Marshall's
penned endorsement to Bundy), and Ltr, Dill to
Marshall. 7 Sep 43, HB Files, Fldr 7, MDR; Stimson
Diary, 7 Sep 43, HLS; Ltr, Bush to Styer, 20 Aug
43. Admin Files, Gen Corresp, 201 (Bush), MDR;
paraphrase of Msg, Lord President to Prime Minis-
ter, 28 Aug 43, HLH.
*7 Stimson Dairy, 8 Sep 43, HLS: Memo, J. M. M.
[Martin] to Prime Minister, sub: 1 ube Alloys, 9 Sep
43, HLH.
ANGLO-AMERICAN COLLABORATION
243
was General Groves's scientific advis-
er; Sir James Chadwick, the eminent
British physicist; and C. J. Mackenzie
of the Canadian National Research
Council. Despite some hesitation by
Dill and Llewellin about delegating
their authority, the Combined Policy
Committee authorized the subcom-
mittee to act independently on inter-
change whenever there was unan-
imous agreement among its four
members.'*^
Working Out Interchange Arrangements
Styer's subcommittee met on 10
September, to consider a plan drafted
by General Groves and submitted by
the Military Policy Committee. Be-
cause this plan hewed fairly closely to
the earlier American proposals on in-
terchange, it fell considerably short of
what the British desired. On weapon
development it recommended assign-
ment of two British scientists to Los
Alamos under the same security re-
strictions governing American scien-
tists there. On the gaseous diffusion
and heavy water pile processes it sug-
gested interchange of scientific infor-
mation through a joint committee. On
the centrifuge and thermal diffusion
processes, which would probably soon
be dropped, Styer's subcommittee
should decide whether interchange
"might affect this decision." As for
the electromagnetic and graphite pile
processes, on which the British had
done little work, interchange would
serve no useful purpose, for these
methods had reached the stage where
changes "would result in serious
delay in completion.'"*^
The subcommittee, largely at the
insistence of Chadwick, recommended
some modifications to the plan favor-
able to the British view. On the gase-
ous diffusion and heavy water pile
processes, interchange should extend
to some aspects of development and
production. There should be ex-
change of scientific data on the
graphite pile to the extent it might be
helpful in the Anglo-Canadian devel-
opment of the heavy water pile pro-
cess. Chadwick's contention that the
British might be able to contribute to
development of the electromagnetic
process should be explored by a com-
mittee consisting of Groves, Tolman,
and Australian physicist Marcus L. E.
Oliphant. In keeping with the Military
Policy Committee's recommendations,
the subcommittee reached agreement
on possible personnel for other com-
mittees or representation needed to
carry out interchange on the various
processes. Chadwick and Sir Rudolph
E. Peierls, the University of Birming-
ham physicist, would serve as British
representatives at Los Alamos; von
Halban with Metallurgical Project Di-
rector Arthur Compton, or one of his
principal assistants, as a committee to
exchange data on the heavy water pile
process; Sir Francis E. Simon, physi-
cist at Oxford's Clarendon Laborato-
ry, and Peierls with Keith, the Kellex
head, and Urey on a gaseous
diffusion committee; and Oliphant,
Simons, and Peierls on a committee
with American representatives desig-
ns cpc Min, 8 Sep 43, and Ltr, Llewellin to
Bundy, 10 Sep 43, HB Files, Fldr 9, MDR. See also
earlier draft of Bundy's minutes, same file. Stimson
Diary, 8 Sep 43, MDR.
"^MPC Min, 9 Sep 43 (source of quotation),
MDR; Tech Subcommittee Min, 10 Sep 43, HB
Files, Fldr 28, MDR. See also MFC Rpt, 15 Dec 42,
MDR.
244
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Sir James Chadwick (left) consulting with General Groves and Richard Tolman on
Anglo-American interchange
nated by Bush or Conant to decide
the extent of interchange on the
centrifuge and thermal diffusion
processes. ^°
Despite the considerable progress
made by the subcommittee, there was
little specific interchange in the weeks
that followed. Part of the difficulty lay
in the lack of specific working proce-
dures. To set these up, Tolman went
to England in October to consult with
Chadwick and other British scientists
and with Sir John Anderson. General
Groves, who was becoming increas-
ingly impatient to implement inter-
change in those areas where it was
sanctioned, closely monitored Tol-
man's negotiations from his Washing-
ton office and attempted to facilitate
Anglo-American coordination by keep-
ing members of the Military and Com-
bined Policy Committees regularly
informed.^ ^
50 Tech Subcommittee Min, 10 Sep 43, MDR.
5^ In Admin, Files, Gen Corresp, MDR, see fol-
lowing files: 334 (British Interchange), for informa-
tion on Tolman's trip; 201 (Conant) for Memo,
Groves to Conant, 2 Nov 43; 680.2 for Ltrs, Llewel-
lin to Groves, 10 Nov 43, with enclosed draft, and
Groves to LleweUin, 12 Nov 43; 371.2 (Scty) for
Ltrs, Capt Horace K. Calvert (Intel and Scty Sec
chief) to Lt Col John Lansdale (Groves's Spec Asst
for Scty), sub: Visit of British Natls to DSM Proj
7 Oct 43, and Maj Robert S. Furman (Groves's Spec
Proj Off) to Calvert, same sub, 21 Oct 43. See also
MPC Min, 14 Dec 43 (with Memo, Groves to MPC,
10 Dec 43, as Att. 1), MDR; Memo, Styer to CPC,
14 Dec 43, HB Files, Fldr 28, MDR; CPC Min, 17
Dec 43, HB Files, Fldr 10, MDR; MPC Rpt, 4 Feb
44, Incl to Ltr, Groves (for MPC) to President, same
date, OCG Files, Gen Corresp, MP Files, Fldr 25,
Tab C, MDR; Groves Diary, 27 Oct, 2 and 4 Nov
43, LRG. For the British perspective on drawing up
Continued
ANGLO-AMERICAN COLLABORATION
245
When Groves received word that
another team of British scientists
soon would be arriving in the United
States, the need for a speedy proce-
dural agreement on interchange
became even more critical to him. Yet
not until mid-December were the
British and Americans able to com-
plete interchange procedures. With
the approval of the Military and Com-
bined Policy Committees, the new
procedures went into effect on the
fourteenth. Naming Chadwick as the
"immediate scientific adviser to the
British members" of the Combined
Policy Committee, the terms of this
agreement permitted that he have
"access" to all work on "research and
plant scale" on both sides of the At-
lantic. The slight and unassuming
Cambridge professor, who, surpris-
ingly enough, got along exceptionally
well with the robust and outspoken
Groves, would also help guide experi-
mental work at Los Alamos, where he
would be joined by a small number of
other British scientists. Peierls, and
one or two others, would work with
Kellex on the diffusion process and
also would discuss theoretical prob-
lems of bomb construction with
American scientists; he could not,
however, visit Los Alamos. Oliphant
and six assistants would work with
Ernest Lawrence at Berkeley on re-
search and design and then move to
Los Alamos to assist on ordnance
problems. Oliphant would continue
his close contacts with the electro-
magnetic project during production
and would be free to visit England to
interchange arrangenienls see Cowing, Britain and
Atomic Enngy, pp. 23S-S4. Colonel Llewellin was re-
placed on the CPC bv Sir Ronald I. Campbell, a vet-
eran member of the British embassy stafT in
Washington.
supervise any similar research there.
About fifteen British scientists and in-
dustrialists, led by Akers, would ex-
change information on diffusion at
Columbia University and Kellex. Re-
search on heavy water piles at Mon-
treal would be continued under a
joint program to be worked out with
those doing similar work in the
United States. ^^
This arrangement was, in effect, the
implementation of the Quebec Agree-
ment. While it did not actually pro-
vide full information exchange, it
went further than most members of
the Manhattan Project administrative
staff would have preferred. Certainly
the arrangements were more liberal
than Groves would have wished, al-
though he later claimed full credit for
having drawn up these "rules regulat-
ing the . . . British scientists." ^^
While anxious to get any British help
that might speed the progress of the
American program, he was generally
opposed to providing Great Britain
with anything more than was abso-
lutely necessary to gain this aid. "I
was not responsible for our close co-
operation with the British," he assert-
ed a decade later. "I did everything to
hold back on it." ^^
By the end of January 1944, eigh-
teen British scientists had reached
New York, Washington, D.C., Berke-
ley, and Los Alamos, and more were
expected. Only one problem re-
mained outstanding, namely, arrange-
ments for cooperation between the
Montreal and Chicago scientists on
52 Memo, Croves to MPC, 10 Dec 43, Att. 1,
MDR; MPC Min, 14 Dec 43, MDR; Cowing, Britain
and Atomic Energy, pp. 234 and 236-37.
*3 Croves, Xow It Can Be Told. pp. 136-37.
** Oppenheimer Hearing, p. 175.
246
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
pile research. Around the middle of
the month, senior members of both
groups had discussed a joint program
of research that would lead to the
construction of a heavy water pile.
Yet to Manhattan leaders in Washing-
ton, it seemed doubtful the venture
would be of significant value during
the war, and Groves and Conant, at
least, preferred that it should not
begin. ^^
On 17 February, however, at the
next meeting of the Combined Policy
Committee, Chadwick pressed for ap-
proval of a Canadian heavy water pile
to undertake large-scale production of
plutonium. Great Britain and Canada
would provide the funds, the United
States the heavy water, and the three
nations would exercise joint control
over the project. Neither Groves, who
was not a committee member, nor
Styer was present, but Bush and
Conant apparently raised some ques-
tions. Would the project result in mili-
tarily significant production before the
end of the war? Was it advisable to use
up resources, especially ore? The com-
mittee turned the problems over to a
subcommittee composed of Groves,
Chadwick, and Mackenzie. ^^
The subcommittee discussed a
heavy water pile with Compton,
Fermi, and others at Chicago and
with von Halban and his colleagues at
Montreal. Then, on 6 April, it submit-
ted its report to the Combined Policy
Committee. The Hanford Engineer
ss MPC Rpt, 4 Feb 44, MDR; Laurence, "Can-
ada's Participation in Atomic Energy Development,"
p. 325; Hewlett and Anderson, \ew World, p. 282.
56 CPC Min, 17 Feb 44, OCG Files, Gen Corresp.
MP Files, Fldr 9, Tab B, MDR; Stimson Diary,
17 Feb 44, HLS; Hewlett and Anderson, Xerv World,
pp. 282-83.
Works, the subcommittee concluded,
would produce enough plutonium to
satisfy "essential military needs" for
the war, and production at the pro-
posed Canadian plant could not begin
in time "to have an appreciable influ-
ence on the outcome of the present
war." On the other hand, the poten-
tialities of the heavy water pile were
so great that its development could
not be "wholly neglected." Accord-
ingly, it recommended continued re-
search and development at both Chi-
cago and Montreal, with an increased
staff and the appointment of a direc-
tor for the Canadian project; the
design and construction of a heavy
water pilot pile in Canada by the
United States, Great Britain, and
Canada; and future consideration of a
small production pile when the exper-
imental stage was further advanced. A
week later the Combined Policy Com-
mittee adopted this program, and in
the ensuing months Groves, Chad-
wick, and Mackenzie continued to
keep an eye on the project for the
committee and see to it that the ap-
proved recommendations were car-
ried out.^''^
The new Montreal director was
physicist John D. Cockcroft, and his
staff was rapidly reinforced with Brit-
ish and Canadian scientists. In early
May, as plans for construction of the
pilot plant matured. General Groves
approved an isolated site previously
selected by the Canadians, near Chalk
River, Ontario, on the south bank of
the Ottawa River and about 1 10 miles
^'' Rpt, Groves, Chadwick, and Mackenzie to CPC,
sub: Joint Development of Heavy Water Pile, 6 Apr
44, HB Files, Fldr 28 (also in Fldr 103), MDR. See
also CPC Min, 13 Apr 44, DS, and pertinent docu-
ments in HB Files, Fldrs 12 and 105, MDR.
ANGLO-AMERICAN COLLABORATION
247
northwest of the Canadian capital.
{See Map 2.) Late in the month, Cock-
croft, von Halban, and others from
Montreal visited Chicago. A second
meeting was held in Montreaf two
weeks later. Discussion was limited by
the rules governing interchange that
Groves, Chadwick, and Mackenzie
were in the process of drafting. These
regulations, which the Combined
Policy Committee approved formally
on 19 September, limited interchange
to information necessary for the
design, construction, and operation of
the Chalk River pilot plant. Scientists
at Montreal could learn about the
pilot pile at Clinton and the research
piles at Argonne, and receive basic
scientific data essential to the heavy
water pile. They were not to be fur-
nished with information about pro-
duction plant construction at Hanford
or the chemistry of plutonium or the
method of separating that element,
because these developments were not
necessary for work at Chalk River. Fi-
nally, the regulations directed that the
Montreal group should establish strict
security in the transmittal of all data.
General Groves designated Maj.
Horace S. Benbow as his liaison offi-
cer at Montreal, or Evergreen, to use
its code name, and directed that the
Chicago area engineer handle all Ev-
ergreen requests. For scientific liai-
son. Groves assigned physicist Wil-
liam W. Watson and chemical engi-
neer J. R. Huffman to report directly
to him rather than the Metallurgi-
cal Laboratory director.^®
The policy established in the spring
of 1944 for interchange on the Cana-
dian project completed the arrange-
ments approved the previous Decem-
ber for Anglo-American information
exchange on atomic energy and ful-
filled the terms of the Quebec Agree-
ment of August 1943. British scien-
tists were now working with Ameri-
cans in the United States on several
phases of the overall program and
were reviewing a limited amount of
information. In the remaining months
of the war, Anglo-American relations
steadily improved, although, inevita-
bly, minor problems arose. ^^
Patent Problems
One of the problems relating to in-
terchange with which the Combined
Policy Committee had to concern
itself periodically during 1943 and
1944 was patent rights. The United
States and Great Britain in August
1942 had concluded an executive
agreement on exchange of patent
rights that provided a general basis
for negotiating more specific arrange-
ments applicable to particular areas of
interchange.^^ At the time of this agree-
58 Rpt, A. W. Nielson and W. H. Sullivan, sub:
Review of Liaison Activities Between Canadian and
United States Atomic Energy Projs, 19 Feb 47, HB
Files, Fldr 103, MDR; Rpt (to CPC), sub: Progress
on Canadian NRX Proj, 24 Aug 44, HB Files, Fldr
103, MDR; MDH, Bk. 1, Vol. 4, "Auxiliary Activi-
ties," Ch. 9, DASA; MPC Min, 10 May 44, MDR;
DSM Chronology, 7 and 15 Jun 44, each Sec. 15,
8 Jun 44, Sec. 2(b), and 12 Jun 44, Sec. 7, OROO;
CPC Min, 19 Sep 44, HB Files, Fldr 13, MDR;
Groves Diary, May-Jun 44, LRG; Ltr, Howe to W.
L. Webster (British Supply Council in North Amer-
ica), 29 Apr 44, HB Files, Fldr 12, MDR. See also
Evergreen progress reports, etc., HB Files, Fldr 32,
MDR.
*'For details on British implementation of inter-
change see Cowing, Britain and Atomic Energy, pp.
239-44.
^"U.S. Department of State, Interchange of Patent
Rights, Information, Inventions, Designs, or Processes:
Agreement Between the United States of America and Great
Britain, Signed at Washington, August 24, 1942, Execu-
tive Agreement Series 268, Pub 1803.
248
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
ment, Sir John Anderson had suggest-
ed to Bush the adoption of a joint
patent policy relating specifically to
atomic energy as an important aspect
of international control. Bush, howev-
er, did not think the time was propi-
tious for establishing such a policy;
instead, he recommended that partici-
pating countries could facilitate even-
tual estblishment of controls by
seeing to it that most patent rights
concerning atomic energy within their
own borders were publicly owned. ^^
The need for patent arrangements
became even more obvious after the
signing of the Quebec Agreement.
With scientists of both countries
working together, a common policy
was necessary to protect both individ-
ual and national rights. Secrecy and
security aspects further complicated
the difficult technicalities inherent in
all patent matters.
In the fall of 1943, Arthur Blok,
patent expert in the British Depart-
ment of Scientific and Industrial Re-
search, and Capt. Robert A. Laven-
der, retired American naval officer
who advised Bush and later Groves
on patent questions, attempted to
reach some agreement. They conclud-
ed that the 1942 agreement did not
apply to atomic developments and
drew up a new proposal. ^^ When
" Ltr, Anderson to Bush. 5 Aug 42, MDR; Hew-
lett and Anderson, New World, pp. 262-63.
*^Ltr, Blok and Lavender to CPC Subcommittee,
1 Oct 43 (recommendations were shown to Chad-
wick but submitted directly to the CPC, because
Styer's group was not familiar enough with patent
problems to add anything to basic suggestions);
Memo, Webster to Bundy, sub: Memo on Patents
Signed by Arthur Blok and Capt Robert A. Laven-
der, 7 Mar 44. Both in HB Files, Fldr 18, MDR.
Groves, Now It Can Be Told, pp. 418-20.
Bush pointed out certain inadequacies
in the Blok-Lavender proposal at
the Combined Policy Committee on
13 April 1944, the committee referred
the problem to its recently appointed
joint secretaries, Harvey Bundy and
W. L. Webster of the British Supply
Council. During the summer the two
men studied the question, conferring
frequently with Lavender, Blok, Bush,
and others; and in September, they
drew up a lengthy administrative pro-
cedure, which the committee ap-
proved at its meeting on the nine-
teenth. But project lawyers found that
the procedure was in conflict with the
United States patent law, and not
until February 1945 was it properly
amended. As finally approved at
the 8 March committee meeting, the
arrangement was still an ad hoc proce-
dure, neither final nor complete, leav-
ing the negotiation of a permanent
settlement to the future.®^
New Partnership Strains: Repatriation
of French Scientists
The liberation of France following
the Allied invasion of Western
Europe in the summer of 1944 placed
new strains upon the British-Ameri-
can atomic partnership.®'* The imme-
"In HB Files, MDR, see followmg files: Fldr 18
for Memo, Bundy and Webster to CPC, sub: Certain
Aspects of Patent Matters Arising from Special Proj,
18 Sep 44 (containing drafts and related corre-
spondence); Fldr 47 for Ltrs, Webster to Howe,
26 Aug 44, and Howe to Webster, 29 Aug 44; Fldr
13 for CPC Min, 19 Sep 44; Fldr 18 for Memo,
Bundy to Lavender, sub: Annex A to CPC Memo, 2
Apr 45 (containing drafts and related correspond-
ence); and Fldr 46 (copy in Fldr 105) for CPC Min,
8 Mar 45.
^■^ Except as indicated, section on problem with
French scientists based on HB Files, Fldr 36 (French
Situation) and Fldr 55 (S-1 U.S. Cables), MDR;
Continued
ANGLO-AMERICAN COLLABORATION
249
diate source of the dispute was the
repatriation of five French scientists —
Hans von Halban, Pierre Auger, Lew
Kowarski, Jules Gueron, and Bertrand
Goldschmidt — who had fled to Eng-
land from France after the German
invasion in 1940 and then gone on to
Montreal in 1943 to work in the Ca-
nadian atomic program. When they
began to apply for permission to visit
or return permanently to their home-
land, American atomic leaders con-
tended such visits posed too great a
security risk, particularly because
physicist Frederic Joliot-Curie, head
of the French atomic program, was
known to be a member of the Com-
munist Party.
The Americans, and especially Gen-
eral Groves, took the view that the
French should not be allowed to go
back to France until the war was over.
In May 1944, when Pierre Auger ter-
minated his employment with the Ca-
nadian project, citing a desire to
return to France to assist Joliot-Curie
in rebuilding French science, Groves
and the British representatives in
America agreed that neither he nor
any of the other French scientists in
Canada should be permitted to do so
and that measures should be taken to
prevent any atomic information from
reaching that country. Nevertheless,
when Auger went to London in
August to become a full-time member
OCG Files, Gen Corresp, MP Files, Fldr 12 (Intel
and Scty), Fldr 16 (Special Rpts), and Fldr 26,
MDR; Hewlett and Anderson, Xew World, pp. 331-
35; Groves, Xow It Can Be Told. pp. 224-29; Ber-
trand Goldschmidt, The Atomic Adventure: Its Political
and Technical Aspects, trans. Peter Beer (Oxford, Eng-
land, and New York: Pergamon Press and Macmillan
Co., 1964), pp. 12-43; Wilfrid Eggleston, Canada's
Xuclear Story (London: Harrap Research Publica-
tions, 1966), pp. 29-181; Gowing, Britain and Atomic
Energy, pp. 289-96 and 343-46.
of the French Scientific Mission in
that city, British authorities permitted
him to visit France.
In October, Gueron requested per-
mission to visit France on personal
matters. Groves, who had learned that
Gueron planned to see Joliot-Curie,
opposed the visit because Gueron
knew a great deal about the atomic
project and was reputed to be an
"ardent Free Frenchman" and sup-
porter of General Charles de Gaulle.
But British authorities indicated they
had agreed to let Gueron go. When
Groves learned this, he determined to
have the French scientist kept under
surveillance by Manhattan security
personnel while in France. The Brit-
ish objected strongly. Gueron was "a
man of integrity," they asserted, and
ought not to be treated as if he were
a prisoner. ^^
Manhattan leaders interpreted
these British actions to be a clear vio-
lation of the terms of the Quebec
Agreement, which forbade communi-
cation of atomic information to third
parties without mutual consent, and
requested the American ambassador
in London, John G. Winant, to secure
an explanation. Sir John Anderson re-
plied that the British had made agree-
ments with the French scientists
before they went to Canada. The first
to come to England — von Halban and
Kowarski — had negotiated an agree-
ment for exchange of patent rights re-
lating to atomic energy between
France and the United Kingdom.
Later when Auger, Gueron, and
Goldschmidt reached England, they
had worked out employment arrange-
^^ Quotations from General Groves's memoran-
dum (26 Dec 44) to Secretary of War on French sit-
uation, HB Files. Fldr 36. Tab K, MDR.
250
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
mcnts that assured them their right to
return to France as soon as the war
made it feasible and also their status
as French civil servants and as adher-
ents of General de Gaulle and the
Free French. Because the French sci-
entists had made a "very special con-
tribution" to the Tube Alloys project,
in the form of "research already start-
ed by Joliot and by his action at the
time when France was over-run," Sir
John contended the French had "a
better claim than any other fourth
country to participate in any post-war
T. A. arrangements," and he did not
think it wise to embark on a course of
action that would "lead the French
authorities to raise the matter prema-
turely and with a sense of grievance
already established." ^^
Anderson's revelation came as a
shock to leaders of the American pro-
gram. Except for some information
on British acquisition of rights under
von Halban's patents that Vannevar
Bush had learned about earlier, they
had known nothing about the agree-
ments between the British and French
scientists. Sir John had not mentioned
them during negotiations for the
Quebec Agreement, yet, as Groves
saw it, these third-party obligations
were in obvious contradiction to that
agreement. He also thought Sir John
was wrong to feel he had to placate
Joliot-Curie and furnish him with in-
formation about the American
project.
*^ Sir John Anderson's reply was sent in the form
of an aide-memoire, a copy of which is in HB Files,
Fldr 18, Tab J, MDR. See also at Tab J, Memo,
Groves to Winant, 31 Oct 44, and Incl (comments
by Maj William A. Consodine, a Manhattan security
officer). Consodine explains how he obtained a copy
of the aide-memoire for the Manhattan commander in
Memo (extract), Consodine to Groves, received on
28 Oct 44, HB Files, Fldr 107, MDR.
Consequently, Groves expressed
some reluctance in consenting to a
British request in November 1944
that von Halban be allowed to visit
London, with the understanding that
the French scientist would not be al-
lowed to go to France. But as soon as
von Halban arrived in England, Sir
John went to Ambassador Winant
with the plea that von Halban should
be permitted to see Joliot-Curie to
ensure preservation of the status quo
with France. Faced with Sir John's in-
sistent request, Winant asked Groves
to come to London to talk with the
Chancellor, but Groves did not go be-
cause he was too involved in urgent
atomic project matters. Under con-
tinuing pressure from Sir John,
Winant finally consented to von Hal-
ban's visit to Paris. The British pro-
vided the French scientist with an
agenda establishing limits for infor-
mation about the American atomic
project that he was to give to Joliot-
Curie, but Manhattan intelligence
agents learned subsequently that von
Halban had furnished the French
atomic chief with much additional
highly secret data about the American
project. There were strong indica-
tions, too, that Joliot-Curie himself
was shortly going to request assign-
ment to work on the Manhattan
Project. ^^
When Groves learned of von Hal-
ban's visit more than a week after it
®^ See correspondence relating to von Halban
case in OCG Files, Gen Corresp, MP Files, MDR. In
Fldr 26, Tab I, especially Memo, Lansdale to
Groves, 2 Dec 44; Draft Transcription of Lansdale
Notes and Rpt, Hans [von] Halban to Akers, sub:
Nov 24-Dec 5 Visit to France, 5 Dec 44. In Fldr 16,
Tab A, Ltr, Richard W. Perrin to W. L. Gorell
Barnes (both British Foreign Svc officials), 8 Dec
44.
ANGLO-AMERICAN COLLABORATION
251
had taken place, he determined to
bring an end to what he perceived as
a deliberate British policy to secure
postwar commercial advantage in the
atomic energy field largely at the ex-
pense of the United States. As Groves
saw it, Anderson was continuing to
permit disclosure to the French of im-
portant information relating to atomic
research that had been "developed by
Americans with American money, and
given to the British pursuant to inter-
change agreements subsidiary to the
Quebec Agreement." ^®
On 14 December, Groves wrote to
the Secretary of War, stating that
"pending the receipt of instructions
from you, 1 will take steps to safe-
guard the security of the DSM project
by delaying insofar as practicable the
passing of vital information concern-
ing it to the representatives of any
government other than our own." ^^
Stimson met with Groves, Bundy, and
Harrison the next day. He informed
them he would take the matter up
with the President at the earliest op-
portunity. He instructed Groves to
prepare a complete resume of the
French situation and requested Bundy
to notify Ambassador Winant that,
until the Combined Policy Committee
met to discuss the situation, he
should refer to Washington "any fur-
ther British proposals for disclosures
or contacts which might lead to dis-
closures to the French. . . ." "^^
^^ Memo, Groves to Secy War, 26 Dec 44, HB
Files, Fldr 36. Tab K, MDR; Groves, Xow It Can Be
Told. pp. 226-27.
«9 Ltr, Groves to Secy War, 14 Dec 44, HB Files,
Fldr 36, Tab I., MDR.
'^° Msgs, Bundy (sent by Groves) to Winant,
26 Dec 44 (source of quotation), and Winant to
WD, 27 Dec 44, HB Files, Fldr 55, MDR; Stimson
Diary, 15 Dec 44, HI.S. Groves's rcsuinc is in
Memo, Groves to Secy War, 26 Dec 44, MDR.
It was not until 30 December that
Stimson was able to see the President.
Groves accompanied the Secretary to
the White House and the two re-
viewed for Roosevelt the entire
French problem, emphasizing that
Anderson appeared to have deliber-
ately deceived Winant and other
American representatives in England
regarding Britain's commitments on
atomic energy matters to France.
Roosevelt's reaction was that Winant
had been "hoodwinked." What, he
wished to know, were the French
after? Stimson and Groves said they
believed France wanted to secure a
full partnership in the tripartite
atomic agreement. Roosevelt indicat-
ed that France in its current unstable
political situation was not a suitable
partner and, even if it were, he saw
no justification for letting it share in
the partnership. The discussion then
turned to other matters relating to
the atomic energy program.'^
With the backing of the President,
Stimson and Groves, assisted by
Bundy, endeavored to prevent further
disclosures of atomic secrets to the
French during the winter and spring
of 1945.'^ They had a statement ap-
" Memo, StiiTison, sub: Conf With President,
30 Dec 44; Memo for File, Groves, 30 Dec 44;
Memo, Groves to Chief of Staff, 30 Dec 44; Notes
by Stimson To Aid in Preparation of Agenda for
Mtg of President and Secy War with Groves. All in
OCG Files. Gen Corresp, MP Files, Fldr 24, MDR.
Stimson and Groves Diaries, 30 Dec 44, HLS and
I.RG.
'2 In HB Files, MDR, see the following files: Fldr
14 (copies in Fldrs 22 and 105) for CPC Min, 22 Jan
45; Fldr 46, Tab C, for Memo, Howe to CPC, 6 Mar
45; Fldr 103 for Ltr, Mackenzie to Stimson, 8 Mar
45; and Fldr 107 for Memo, Groves to Secy War, 13
May 45, and Incl, Ltr, Chadwick to Groves, 8 May
45. See also Stimson Diary, 19 and 22 Jan 45, HLS.
The Secretary of War makes no mention in his diary
of later developments in the French situation in the
spring and summer of 1945.
252
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
proved by the Combined Policy Com-
mittee for Sir John Anderson to use
if, as anticipated, the French request-
ed full participation in the atomic
energy program. The gist of this
statement was that, for reasons of
security, all detailed discussion of
atomic matters with the French must
be postponed until the end of the
war, when the British would guaran-
tee "fair treatment of any claims
. . . relating to commercial or indus-
trial applications of nuclear sources of
power." ^^
When Sir John met with Joliot-
Curie on 23 February in London, he
did not present the formal statement,
but he did adhere generally to the
policy set forth in it. He indicated
that, because of the continuation of
the war and because British leaders
could not readily get together with
their French counterparts, progress
on shaping postwar policies had not
been possible. Anderson found that
Joliot had concluded from the favor-
able British actions with regard to
von Halban and Gueron, and the
other French scientists, that Great
Britain recognized the interests of
France in atomic energy matters and,
in the postwar period, would strongly
support her in the pursuit of these
interests.
Fear that there might be another
breakdown in Anglo-American inter-
change if he persisted in his strong
support of French atomic interests
appears to have engendered a modi-
cum of moderation in Sir John; how-
ever, he persisted in efforts to have
British leaders propose that the
French be assured of greater partici-
pation in atomic matters as soon as
security considerations made this fea-
sible. Two pressing concerns motivat-
ed Sir John's actions: his belief that
Britain owed this support to the
French atomic scientists for their con-
tribution to the British and Canadian
atomic programs, and his fear that
any policy that offended France might
drive her into the Russian camp in
the postwar period.
In March 1945, Bundy and Groves
worked out an acceptable arrange-
ment with the British and Canadian
authorities for keeping the French
atomic scientists (except Auger who
was now in Paris working with Joliot)
in the United States or Canada until
the war was over. In early May,
Auger's status temporarily gave cause
for concern when word reached
Groves through Chadwick that Joliot,
under pressure from one of the min-
isters in the French government, felt
compelled to begin an active atomic
energy program, including a survey of
French territories for uranium and
the start of research projects for the
preparation of pure uranium metal
and graphite. But Auger assured Brit-
ish scientists he would take no active
part in the proposed program, and by
summer of 1945 atomic developments
in the United States had reached a
point where the French problem no
longer constituted a major threat to
the security of the Manhattan
Project.'^
"Paper, [Bundy], sub: Problems With Respect to
the French, 19 Jan 45, HB Files, Fldr 36, Tab I,
MDR.
"•Memo, Groves to Secy War, 13 May 45, and
Incl; Ltr, Chadwick to Groves, 8 May 45, MDR; Rpt,
sub: Summary [of French Situation], Incl to Memo,
Groves to Secy State James F. Byrnes, 13 May 45,
OCG Files, Gen Corresp, MP Files, Fldr 12, Tab D,
MDR.
CHAPTER XI
Security
The leaders of the American atomic
energy program, aware of the tremen-
dous military potentiality of atomic
weapons and reports of German
atomic research, recognized almost
from the beginning the need for
maintaining a high degree of secrecy.
An important factor in their decision
in early 1942 to turn over administra-
tion of the program to the Army was
their conviction that it was the organi-
zation best prepared during wartime
to enforce a foolproof system of secu-
rity. Such a system would ensure that
the Axis powers remained ignorant of
Allied interest in developing atomic
weapons; reduce the likelihood that
the Axis states, particularly Germany,
would accelerate their own efforts to
produce atomic weapons and under-
take espionage and sabotage activities
against the American program; and,
most significantly, from the stand-
point of military effectiveness, aliow
the Allies to employ these weapons
against the Axis nations with maxi-
mum surprise.^
' Knowledge of the progress of the Germans, or
the other .Axis states, in atomic research and devel-
opment was not based upon precise and accurate in-
telligence information, for such was not available to
the Allies. Nevertheless, because the Allies lacked
specific information to the contrary, they had to
assume that at least Germany would make a serious
attempt to develop atomic weapons. See Rpt to
Early Aspects
First efforts to estabhsh security in
atomic matters had occurred in 1939,
when refugee physicists in the United
States attempted to institute a volun-
tary censorship on publication of
papers concerning uranium fission.
American scientists did not accept
this suggestion initially, but the out-
break of World War II brought home
to many of them the need for control
over publications relating to atomic
fission. To formalize a censorship
program, the Division of Physical Sci-
ences of the National Research Coun-
cil in April 1940 established a com-
mittee that succeeded in getting most
scientists to withhold publication of
papers on sensitive subjects, particu-
larly those concerned with uranium
fission. 2
In June, when the government-
sponsored Committee on Uranium
President, sub: Status of Tube Alloys Development,
9 Mar 42, Incl to Ltr, Bush to President, same date,
HB Files, Fldr 58, MDR; DSM Chronolog>, 26 Sep
42, Sec. 2(e), OROO; MDH, Bk. 1, Vol. 14, "Intelli-
gence & Security," p. 1.1, DASA; Groves, \ow It
Can Be Told, 140-41; MPC Rpt, 7 Aug 44, Incl to
Memo, Groves to Chief of Staff, same date, OCG
Files, Gen Corresp, MP Files, Fldr 25, Tab K, MDR.
2 On the early efforts to establish a voluntary cen-
sorship program see the Prologue to this work and
the Smvth Report, pp. 331-32.
254
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
became a subcommittee of the newly
constituted National Defense Re-
search Committee (NDRC), it also
became subject to the security meas-
ures currently in efTect for federal
agencies. The NDRC, knowing that it
was to be concerned chiefly with
projects for the Army and Navy,
adopted security regulations that con-
formed to those of the two military
services. Under these regulations
NDRC subcommittees were required
to adhere to a policy of strict com-
partmentalization of information, to
classify all sensitive materials, and to
obtain security clearances for all
employees.
Transfer of the NDRC uranium
program to the Office of Scientific
Research and Development (OSRD)
in November 1941 did not significant-
ly alter existing security arrange-
ments, because the OSRD patterned
its own security system largely along
the lines of the NDRC program. As
the OSRD became more involved in
negotiation and administration of
contracts with industrial and research
organizations, however, it expanded
its security controls to provide a more
adequate coverage, adding security
measures for personnel administra-
tion, classified information, and plant
protection.^
The modest OSRD security system
sufficed until, in the spring of 1942,
the start of the uranium program's
rapid expansion — the letting of nu-
merous contracts with industrial
firms; the employment and interac-
tion of ultimately tens of thousands of
workers, scientists, and engineers;
and the formation of complex organi-
zations to construct and operate the
large-scale production plants and
their atomic communities — enor-
mously complicated the problems of
security just at the time the Army un-
dertook its new role as project admin-
istrator. Although these measures
were necessary for the more rapid
achievement of a successful fission
weapon, they also tended to weaken
security."* Consequently, the Army
almost immediately undertook a reor-
ganization and expansion of the exist-
ing OSRD security system and, even-
tually, also endeavored to bring the
system more directly under control
of the Manhattan District. The sys-
tem that finally evolved was in many
respects unique and introduced
a number of innovations in tech-
nique and organization that subse-
quently would be adopted as standard
features of government security
programs.
The District's Security System
The security system, as it took form
in the newly established Manhattan
District, resembled that already in ex-
istence in most other engineer dis-
tricts. Under Army regulations in
force in 1942, the security program of
an engineer district was hmited to
routine local security requirements.
When broader problems arose, the
^ Stewart, Organizing Scientific Research for War, pp.
27-31 and 246-55.
Mbid., pp. 246-47; Ltr, Compton to Conant,
8 Dec 42, Admin Files, Gen Corresp, 319.1 (Rpts),
MDR. Compton's letter to Conant complained that
the security-inspired policy of compartmentaiization
was delaying determination of the purity standards
that must be met for the plutonium to be employed
in an atomic weapon. This well illustrates the recur-
ring conflict in the Manhattan Project between the
demands of the program and the requirements of
security.
SECURITY
255
district engineer or security officer
could call upon the resources of the
Assistant Chief of Staff, G-2, in the
War Department. Since June 1939,
under provisions of a presidential
proclamation, the War Department's
Military Intelligence Division (MID)
had shared responsibility for matters
of espionage, counterespionage, and
sabotage in the United States with the
Federal Bureau of Investigation (FBI)
and the Office of Naval Intelligence.
In the latest revision (February 1942)
of this Delimitations Agreement — so
designated because it set forth the
area of jurisdiction of each agency —
the MID's assignment was to cover
the military establishment, including
War Department civilian employees
and civilians on military reservations
or under military control, plus a large
part of the munitions industry.^
Organization and Scope
Colonel Marshall, in organizing the
Manhattan District security program
soon after becoming district engineer
in June 1942, formed the Protective
Security Section. Under direction of a
member of Marshall's staff, this sec-
tion emphasized such aspects as per-
sonnel, plant, and military informa-
tion security. At the same time, to
provide the District security staff with
counterintelligence assistance, Mar-
niDH. Bk. 1. \ol 14. p. 7.1. DAS.A, OCE Cir
1070. sub: Org for Protective Sctv Svc in OCE
(>onstr Div and in OfTire of I)iv and Area Engrs,
15 Jun 42. CE 025.1 CXP. Engrs Eibrary, Fort Bel-
voir, \'a.; Ms, Capt (". |. Bernardo, "Counterintelli-
gence Corps Histor\ and Mission in World War 11"
(Fort Holabird, Baltimore, Md.: CIC School, n.d.),
pp. 4 and 13, NARS; Ms, Army Service Forces, In-
telligence Division, "History of the Intelligence Divi-
sion," 4 vols. (Armv Service Forces, ca. 1946),
1(2):13-14, l(8):l-2, l(9):10-n, NARS; Groves,
Sow It Can Be Told, p 138.
shall arranged with the Assistant
Chief of Staff, G-2, Maj. Gen. George
V. Strong, for security liaison with the
MID's operating element, the Military
Intelligence Service (MIS). From his
staff. General Strong assigned coun-
terintelligence responsibility for the
atomic project to Maj. John Lansdale,
Jr., who had been a lawver in civilian
life.
Because effective security oper-
ations required maximum secrecy,
Major Lansdale personally visited the
Western Defense Command G-2 and
each service command and requested
that they each select an officer to
report directly to him, bypassing both
the G-2 and the commanding general
of each service command.^ To further
facilitate carrying out the internal se-
curity functions for the atomic
project, Lansdale also organized a
quasi-clandestine counterintelligence
group. This group operated under
cover of the Investigation Review
Branch, Assistant Chief of MIS for Se-
curity, which Lansdale headed. He re-
ported directly to General Groves,
and his group in effect was answer-
able to the Manhattan Project com-
mander in all substantive respects,
even though it functioned from the
G-2 office in the Pentagon."^
^ An organization formerly called a corps area,
serving as a field agency of the Army Service Forces
in a specified area. Under the reorganization of the
War Department on 9 Mar 42, there were nine geo-
graphical service commands throughout the L'nited
States, each providing services (including adminis-
trative, financial, legal, statistical, medical, welfare,
etc., for Army elements), constructing facilities, fur-
nishing fixed communication services, and procur-
ing, storing, maintaining, and distributing supplies
and equipment for Army use. See WD TM 20-205,
Diclionarv of United States Armv Terms, 1944, p.
249.
^MDH, Bk. 1, \ol. 14, pp. 7.1-7.2, DASA;
Groves. \ow It Can Be Told, pp. 138-39; Marshall
Continued
256
MANHATTAN: THE ARMY AND 1 HE AlOMIC BOMB
By early 1943, the pace of the Dis-
trict's growth — both geographically
and in terms of personnel — and its in-
creasing security requirements em-
phasized the need for a more compre-
hensive counterintelligence program.
In February, General Strong trans-
ferred Capts. Horace K. Calvert and
Robert J. McLeod to the District
headquarters, where they formed the
District's new Intelligence Section. To
ensure that this section, which Cap-
tain Calvert headed, had full access to
the intelligence and security facilities
of the Army service commands.
Strong requested that each command
designate a staff officer to act as a
point of liaison with the Manhattan
District and, to guarantee secrecy, au-
thorized that each correspond directly
with Calvert's section. At the same
time. Groves continued his earlier
practice of meeting with G-2 officers
to make certain that District security
problems were brought to the atten-
tion of appropriate Army officials.®
The counterintelligence program
became the foundation for a country-
wide permanent organization of this
aspect of the District's security
system. During the course of the year,
the District organized its own Coun-
terintelligence Corps (CIC) and, as its
staff increased in size, assigned new-
personnel to those areas where there
was the greatest concentration of
project activities. Ultimately, the
project had a total of eleven branch
intelligence offices at key points
across the United States, from New
Diary, 20 Jul 42, OCG Files, Gen Gorresp, Groves
Files. Misc Recs Sec, behind Fldr 5, MDR; Ltr, Lans-
dale to Col R. W. Argo. Jr. (Dep Chief of Mil Hisi),
3Jan75, CMH.
»MDH, Bk. 1, Vol. 14, p. 7.2, DASA; Groves, \ow
II Can Be Told. pp. 138-39.
York to Pasadena (Calilbrnia). An of-
ficer assigned to a branch usually
worked out of an area engineer's
office and, in addition to his intelli-
gence duties, served as security offi-
cer on the engineer's stafi. While in
matters of command these officers
came under control of the Manhattan
District intelligence and security offi-
cer and reported to him, they also
maintained a direct liaison channel
with the director of mtcUigence of the
service command that had jurisdiction
over their area.^
Expansion and Centralization
Rapid growth also necessitated ex-
pansion of other aspects of the Man-
hattan Project's security system. In
1942, the District's relatively modest
internal security organization had
served well enough for a program
that consisted primarily of administer-
ing research and development activi-
ties carried on in university and in-
dustrial laboratories; but, by summer
of 1943, a vast program of plant con-
struction and operation had begun.
The move of the District headquar-
ters from New York to Oak Ridge in
August provided an opportune time
for reorganization. {See Chart 2.) The
first step was consolidation in July of
the Protective Security and Intelli-
gence Sections. Captain Calvert took
over responsibility for the combined
unit, designated the Intelligence and
Security Section. Although this
change was relatively minor from an
administrative standpoint (the section
continued in a distinctly subordinate
position in the District's Service and
MDH. Bk. 1, Vol. 14, pp. 7.2-7.4, DASA.
SECURITY
257
Control Division), it represented a
significant shift towards centralization
in security matters. This change was
consistent with General Groves's con-
viction that only through a high
degree of centralized control could he
and his administrative staff maintain a
close and constant scrutiny over the
security program. ^°
Shortly after the District had com-
pleted its move to Oak Ridge, a reor-
ganization in the Army's administra-
tion of counterintelligence operations
in the zone of interior (ZI) posed a
threat to Groves's control and cogni-
zance over the project's internal secu-
rity functions. To economize on inter-
nal investigative operations and to
concentrate G-2 efforts on expanding
counterintelligence operations over-
seas, the War Department directed
the transfer, effective 1 January 1944,
of the WDGS (War Department Gen-
eral Staff) G-2 counterintelligence ac-
tivities in the ZI to the Office of the
Provost Marshal General. The effect
was to decentralize even further the
Army's ZI counterintelligence func-
tions to the service commands, in-
cluding maintenance of data files on
individuals which Manhattan intelli-
gence officials considered essential to
their operations. The change also
seemed certain to enhance the diffi-
culties the atomic project already was
experiencing in coordinating its inter-
nal security operations with the serv-
ice commands. ^^
'"Org Chans, U.S. Engrs Offire, MD, \5 .'Vug
and 1 Nov 43, Admin Files, Gen (.orresp, 020
(MED-Org), MDR; Groves, Xow It Can Be Told, p.
139.
i> Ms, ASF, "Hisl Intel Div, • 1(9): 10-1 1; Ms, Ber-
nardo. "CIC Hist," pp. 14-15. Both in NARS. WD
Cir 324, sub: Transfer of CI Functions Within the
ZI, 14 Dec 43. Memos, CG OIG (Maj Gen VirgilL.
Peterson) to Dep Chief of Staff (Lt Gen Joseph T.
From his vantage point as head of
the atomic project's counterintelli-
gence group inside G-2, Colonel
Lansdale endeavored to have the
group exempted from the reorganiza-
tion requirements. When his efforts
failed, General Groves decided that
the only acceptable solution was to
move Lansdale's unit into the Man-
hattan District. The G-2 sanctioned
this change in December, and Lans-
dale secured authorization to estab-
lish a special counterintelligence de-
tachment. Groves arranged for Lans-
dale's transfer to the Manhattan Dis-
trict; however, instead of placing him
in charge of the new CIC Detach-
ment, he brought Lansdale into his
Washington office as his special as-
sistant for security affairs. Lansdale's
assignment was to keep the Manhat-
tan chief abreast of problems and de-
velopments affecting internal security
and foreign intelligence wherever
they might arise in the project. ^^
The shift of all project counterintel-
ligence activities to the District re-
quired major changes in its security
organization. {See Chart 3.) The Intel-
ligence and Security Section in Febru-
ary 1944 became a full-fledged divi-
sion and, in keeping with Groves's
McNarney), sub: Intel Activities in Svc Cmds, 6 Nov
43, and Col O. L. Nelson (Asst to McNarney) to CG
ASF and to ACS G-2, same sub, 25 Nov 43, repro-
duced in Monograph, Office of the Provost Marshal
General, 'The Lovaltv Investigations Program,"
Tab 45, CMH (see also pp. 52-58 for details on the
elimination of unnecessary investigations). Millett,
Anny Sennce Forces, pp. 358-59. Ltr, Strong to CG
4th Svc Cmd, sub: Personnel on DSM Proj, 27 Dec
43, reproduced in MDH. Bk. 1, Vol. 14, App. .\2,
DASA. Ibid., pp 7.5-7.7, DASA. WD Bur of Pub
Rels, sub: Script for Radio Broadcasts, 12 Aug 45,
Admin Files, Gen Corresp, 000.73 (Radio Broad-
casts), MDR.
'^Ltr, Lansdale to Argo, 3 Jan 75, CMH; Testimo-
ny of Lansdale in Oppenlmmer Hearing, pp. 259-60.
258
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
centralization policy, moved from the
Service and Control Division into the
district engineer's own office. To re-
place Captain Calvert, whom Groves
had selected for a special intelligence
mission in London, Colonel Nichols —
the district engineer since August
1943 — brought in an experienced in-
telligence officer, Lt. Col. William B.
Parsons, to head the new division. In
this capacity Parsons administered the
District's security program with the
assistance of Major McLeod, the
deputy, and Capt. Bernard W. Menke,
the executive officer, and with sup-
port from a large operating staff of
military and civilian personnel. Al-
though Parsons officially reported to
Nichols, he personally kept General
Groves appraised of all developments.
Expanding intelligence and security
activities necessitated procurement of
additional personnel to carry out sup-
portive security functions, such as
plant inspections and technical and
undercover investigations. Colonel
Parsons drew 25 officers and 137 en-
listed men from the War Depart-
ment's counterintelligence manpower
pool and the District's personnel spe-
cialists recruited a large number of ci-
vilians. In May 1944, to provide ad-
ministrative services for the expand-
ing security force, Nichols activated
the 13th Special Engineer Detach-
ment (Provisional) and assigned Par-
sons the additional duty of unit com-
mander. Concerned about achieving
greater efficiency in security oper-
ations. Parsons requested and re-
ceived permission in January 1945 to
combine the 13th with the CIC
Detachment. ^^
By this time, Parsons' Intelligence
and Security Division had become a
highly centralized unit, organization-
ally divided into six separate
branches: Clinton Engineer Works
(CEW), Security, Administration,
Safeguarding Military Information
(SMI), Branch Offices, and Evaluation
and Review. The CEW, Security, and
Administration Branches, for which
McLeod had direct responsibility,
dealt primarily with security matters
at the Tennessee site. The CEW
Branch administered the local civilian
guard force and the military police
contingent that protected the Tennes-
see reservation; coordinated subordi-
nate security offices in the K-25 (gas-
eous diffusion), Y-12 (electromag-
netic), and X-10 (pile) process areas;
and, through a board established for
the purpose, reviewed security cases.
The Security Branch chiefly moni-
tored activities related to security of
project manufacturing plants, espe-
cially at the Clinton site, and the ship-
ping of classified materials and equip-
ment. The Administration Branch was
concerned primarily with personnel
security problems, both military and
civilian, but also provided facilities for
the special handling of the division's
mail and records and administered
certain confidential funds.
The SMI, Branch Offices, and Eval-
uation and Review Branches, for
which Captain Menke had direct re-
sponsibility, eventually evolved as a
•3 Org Charts, U.S. Engrs OfTice, MD. 15 Feb 44,
MDR; MDH, Bk. 1. Vol. 14, pp. 7.7-7.8, DASA;
Memo, Strong to CG ASF, sub: CIC Detachment for
MD, 18 Dec 43, reproduced in ibid., App. B3,
DASA; Ltr, Col Donald E. Antes (Spec Insp for
Fiscal Procedures) to Groves, sub: Investigation of
Promotions. MD Intel Br, 13 Jul 45, Admin Files,
Gen Corresp, 319.1 (Recs Insp: Hanford, 1945-46),
MDR.
SECURITY
259
Changing of the Guard: Military Police Contingent at CEW
central clearinghouse for intelligence
and security matters that related not
only to the Tennessee site but also to
the various project operations else-
where. The principal responsibility of
the SMI Branch was that of project-
wide monitoring of programs in secu-
rity education, censorship, and the
handling of classified materials. The
Branch Offices Branch, as its name
would indicate, was responsible for
coordinating field security operations
in the eleven geographical areas
where atomic energy activities were in
progress and for reporting the area
engineers' security problems to the
division's Evaluation and Review
Branch. The latter branch concentrat-
ed in one office functions hitherto
performed by several of the branch
intelligence offices — most notably,
those concerned with the conduct of
subversive investigations and the
preparation of special reports on Dis-
trict security matters for higher
echelons. ^^
Counterintelligence Activities
Counterintelligence activities con-
stituted one of the most significant
aspects of the District's security pro-
gram. Through effective counterintel-
ligence measures, the District sought
to provide the shroud of secrecy nec-
'^MDH. Bk. 1, Vol. 14. pp. 7.2-7.13 and App. A7
(Org Chart), DASA; Memo, Col Elmer E. Kirkpat-
rick, Jr. (Dep Dist Engr) to Groves, sub: Insp of
Intel Div, Oak Ridge, 15 Dec 44, Admin Files, Gen
Corresp, 319.1 (Insp of Intel Div), MDR.
260
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
essary to forestall all attempts by the
enemy not only to gain information
about the American atomic energy
program but also to sabotage it.
Yet by its very nature, the Manhat-
tan Project remained vulnerable to es-
pionage and sabotage. The District's
recruitment of thousands of individ-
uals with almost every conceivable
kind of background and from all parts
of the country made likely the em-
ployment of some potential spies and
saboteurs, no matter how efficient its
clearance procedures might be, and
its widely scattered installations made
implementation and maintenance of
uniform security procedures through-
out the project very difficult. The re-
ality of these conditions forced
project leaders to assume that, sooner
or later, Germany and Japan — and
even the Soviet Union — would learn
of the atomic energy program and,
more importantly, use espionage to
expand their knowledge of it and sab-
otage to destroy America's military
advantage. ^^
1 o detect and counter potential es-
pionage and sabotage activities, the
District's GIG Detachment relied pri-
marily upon extensive intelligence in-
vestigations. The majority of these in-
vestigations were of a preventive
character, designed to minimize the
likelihood that security might be
breached. Of this type, for example,
were the many security checks into
the unauthorized transmission of clas-
sified information. In most instances,
GIG personnel found that the infor-
mation leaks thus uncovered were the
result of carelessness or ignorance on
the part of the employee or individual
with knowledge of the project. But
because it was always possible such
leaks were surface ramifications of
much more dangerous espionage ac-
tivity, all cases of careless handling of
classified data received prompt and
rigorous corrective action.
A second type of preventive investi-
gation was the supplementary and
more thorough check into the back-
ground of employees earlier subject-
ed to routine clearance procedures.
Most supplementary investigations
were made because preliminary data
indicated an employee might be a po-
tential security risk or routine proce-
dures had not produced adequate in-
formation about the person's back-
ground. Typical cases were those in-
volving scientists or technicians who
recently had come from abroad, espe-
cially those who had come from areas
under control of the Axis powers.
Faced with a continuing shortage of
scientifically and technically trained
personnel, project leaders early had
adopted the policy of weighing the
degree of risk against the contribu-
tions an employee with security clear-
ance problems could make in devel-
opment of atomic weapons. "All
procedures and decisions on security,
including the clearance of personnel,"
Groves recalled, "had to be based on
what was believed to be the overrid-
ing consideration — completion of the
bomb. Speed of accomplishment was
paramount." ^^
Perhaps the most notable example
of the application of Groves's dictum
on employing talented individuals
'*Rpt to President, sub: Status of Tube Alloys
Development, 9 Mar 42, Incl to I.tr, Bush to Presi-
dent, same date, MDR.
'6 Groves, Xow It Can Be Told, pp. 141-42. See
also MDH, Bk. 1, Vol. 14, pp. 2.1-2.2, DASA.
SECURITY
261
who were security risks was the case
of J. Robert Oppenheimer. When the
Manhattan commander decided to ap-
point Oppenheimer as head of the
Los Alamos Laboratory in February
1943, he did so with full knowledge
that the theoretical physicist, who had
worked on the project since late
1941, had only an interim security
clearance from the OSRD. OSRD Di-
rector V^annevar Bush, S-1 Commit-
tee Chairman James B. Conant, and
the other scientific leaders were gen-
erally aware of Oppenheimer's past
record of association with Commu-
nist-related organizations and individ-
uals. They knew that during the
1930's he had been attracted to a
number of Communist-front organiza-
tions and, while never a member of
the party itself, made fairly regular
contributions to Communist-support-
ed causes. Communist fellow-travel-
ers, including his former fiancee, were
among his friends, and his wife and
brother and sister-in-law were former
Communists. With the signing of the
Nazi-Soviet pact in 1939, Oppen-
heimer had begun to have serious
doubts about the Communists; how-
ever, he continued to contribute to
the Spanish War Relief through party
channels until the spring of 1942 and
to maintain a casual contact with his
former friends. ^"^
Despite his record of past Commu-
nist associations. Groves decided Op-
penheimer was the best choice to
'^ Discussion of Oppenheimer security clearance
based on Oppenheimer Heating, especially testimony of
Oppenheimer, Groves, Pash, and Bush; Memo,
Groves to Secy War, sub: Loyalty Clearance of J. R.
Oppenheimer, 24 Mar 47, Admin Files, Gen Cor-
resp, 333.5 (Clearance Ltrs), MDR; Groves, Com-
ments on Draft Ms "Now It Can Be Told," LRG;
Intcrv, British writer Hailey with Groves, 13 Dec 57,
LRG.
direct the bomb laboratory at Los
Alamos, for since 1941 he had been
involved in this aspect of research
and development under Metallurgical
Laboratory Director Arthur Compton
and in the summer of 1942 had
become head of the project team con-
centrating on that work. Hardly had
Oppenheimer arrived at Los Alamos
in the spring of 1943 when the ques-
tion of his clearance arose in a new
form. At the request of the Manhattan
commander, Lt. Col. Boris T. Pash,
chief of the Counterintelligence
Branch of the Western Defense Com-
mand, began an investigation of sus-
pected Soviet espionage in the Radi-
ation Laboratory at Berkeley. Several
men known or thought to be associat-
ed with Oppenheimer came under
suspicion and, as a result, so did Op-
penheimer himself.^® On 29 June,
Pash submitted his conclusion that
Oppenheimer "may still be connected
with the Communist Party." He of-
fered three possible courses: to re-
place Oppenheimer as soon as possi-
ble; to train a second-in-command at
Los Alamos as a possible replace-
ment; and, Pash's recommendation,
to have Oppenheimer meet with Gen-
erals Groves and Strong in Washing-
ton so that they could brief him on
"the Espionage Act and its ramifica-
tions" and also instruct him that the
government was fully aware of his
Communist "affiliations," that no
"leakage of information" would be
tolerated, and that the entire project
would be held under "rigid control."
In recommending this procedure.
'® See Rpt, MID, sub: Investigations of Federa-
tion of Architects, Engineers, Chemists, and Techni-
cians, Local 25, 13 Aug 43, Incl to Memo, Groves to
Bundy, 17 Aug 43, HB Files, Fldr 61, MDR.
262
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Pash was of the opinion that Oppen-
heimer's "personal inchnations would
be to protect his own future and rep-
utation and the high degree of honor
which would be his if his present
work is successful, and, consequently,
. . . that he would lend every effort
to cooperating with the Government
in any plan which would leave him in
charge." In any event, he suggested,
Oppenheimer should be told that two
bodyguards were being assigned to
protect him against violence from
Axis agents. These bodyguards
should be specially trained counterin-
telligence agents who would not only
serve as bodyguards but also keep a
check on Oppenheimer.^^
Colonel Pash's report did not
change Groves's opinion. After a
quick visit to Los Alamos, during
which he presumably discussed mat-
ters with Oppenheimer, Groves di-
rected on 15 July that he be cleared.
On his return to Washington a few
days later, he directed "that clearance
be issued for the employment of
Julius Robert Oppenheimer without
delay, irrespective of the information
which you have concerning Mr. Op-
penheimer. He is absolutely essential
to the project." ^^ As he wrote the
Secretary of War four years later, "it
was apparent to me that [Oppen-
heimer] would not be cleared by any
agency whose sole responsibility was
military security. Nevertheless, my
careful study made me feel that, in
spite of [his] record, he was funda-
mentally a loyal American citizen and
that, in view of his potential over-
all value to the project, he should be
employed." ^^
Most security cases investigated by
the District's CIC Detachment in-
volved breaches of classified informa-
tion or allegations against employees
handling classified work of disloyalty
to the United States or of affiliation
with organizations espousing subver-
sive ideologies. While many such
cases presented the possibility of espi-
onage, in fact, investigations turned
up only about one hundred instances
of such activity. When suspected cases
appeared on the increase in 1943, the
Manhattan commander selected a
number of the District's own CIC per-
sonnel to serve as special undercover
agents. They occupied strategically lo-
cated positions in project offices, lab-
oratories, and plants, set up listening
posts, checked intensively into per-
sonnel and other records of individ-
uals under suspicion, and took other
measures designed to solve espionage
cases. ^^
The appointment of special agents
was a move towards greater formali-
zation of the procedure for dealing
with espionage, which continued to
increase as the project grew in size
and scope. Another constructive
measure was the establishment of a
group of permanent surveillance
'^ Memo, Pash to Lansdale, sub: J. R. Oppen-
heimer, 29 Jun 43, reproduced in Oppenheimer Hear-
ing, pp. 821-22.
2° Memo (source of quotation). Groves to Dist
Engr, sub: J. R. Oppenheimer, 20 Jul 43, repro-
duced in Oppenheimer Heanng, p. 170; Groves Diary,
14-20 Jul 43, LRG.
2' Memo, Groves to Secy War, sub: Loyalty Clear-
ance of J. R. Oppenheimer, 24 Mar 47, MDR.
22 Details on appointment of special agents and
surveillance squads based on MDH, Bk. 1, Vol. 14,
pp. 2.3-2.4, DASA; Ltr, Lansdale to Argo, 3 Jan 75,
CMH; Groves, Xow It Can Be Told, p. 139; MPC Rpt,
21 Aug 43, OCG Files, Gen Corresp, MP Files, Fldr
25, Tab E, MDR. The section on Russian activities,
which deals with espionage incidents at Berkeley,
provides a good example of Groves's reports to the
Top Policy Group on intelligence developments.
SECURITY
263
squads to carry out supplemental and
nonroutine personnel investigations.
Members of these squads, as well as
other District security agents, soon
became adept in employing profes-
sional counterespionage techniques
and in using such surveillance equip-
ment as cameras with special lenses
(telephoto and other types) and con-
cealable listening and recording de-
vices. During their investigations of
persons suspected of espionage activi-
ties, either District employees or indi-
viduals who had contact with project
personnel, the agents operated in the
guise of diverse roles — to mention
only a few, hotel clerks, bell captains,
tourists, electricians, painters, con-
tractors, and gamblers.
To ensure effective functioning and
control of the surveillance squads and
other special security agents on a
countrywide basis. District security of-
ficials developed new channels of
coordination and communication.
Through Colonel Lansdale's counter-
intelligence staff at Groves's Washing-
ton headquarters, field security teams
at the various branch intelligence of-
fices had access to information from
the FBI and other government securi-
ty agencies. These field teams also
had to file written reports of their
findings and activities on a regular
basis with the Evaluation and Review
Branch of the Intelligence and Securi-
ty Division. As these reports accumu-
lated in the files at District headquar-
ters, they became an important source
of information for operation of the
whole counterintelligence program.
General Groves, in particular, made
use of the data garnered from these
reports in concert with information
acquired from other government
agencies in preparing his periodic
Military Policy Committee and Top
Policy Group briefings on intelligence
developments affecting the atomic
program.
Espionage Incidents
The most serious espionage activity
came not from the enemy but from
America's wartime ally: Soviet Russia.
Having in the United States a large
diplomatic and consular staff as well
as other officials for overseeing lend-
lease and other assistance programs,
the Russians had a more than ade-
quate reservoir of personnel for main-
taining an extensive espionage appa-
ratus in this country. Soviet agents,
masking as diplomatic and consular
officials, turned to members of the
Communist Party of the United States
and to party sympathizers for assist-
ance in penetrating American wartime
institutions and projects. The Rus-
sians, making the plea that the Ameri-
can government was withholding im-
portant information and thus unnec-
essarily delaying Allied victory, re-
cruited many native Communists and
fellow-travelers to assist them in ob-
taining vital secrets about wartime
activities. ^^
As early as February 1943, counter-
intelligence agents of the FBI and
Western Defense Command became
aware that the Russians were obtain-
ing data concerning activities of the
Radiation Laboratory at the Universi-
ty of California. Further investigation
revealed that, in October 1942, a
leading member of the American
Communist Party on the West Coast
23 Ms. ASF, "Hist Intel Div," 1(7):8-10, NARS.
264
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
had advised a fellow party member
employed at the Radiation Laboratory
to retain his position so he could
obtain knowledge of the secret work
under way there. This employee and
other Communists or Communist
sympathizers working at the laborato-
ry were passing on information about
the atomic project at Berkeley to
Communist Party members, who
promptly turned it over to the Soviet
vice consul in San Francisco. Evi-
dence came to light in early April that
a high official in the Soviet embassy
in Washington had recently given
money to a West Coast Communist
leader, to be used for espionage. In-
tensive investigation by Western De-
fense Command counterintelligence
agents resulted in prompt identifica-
tion of those Radiation Laboratory
employees who were engaging in es-
pionage activities. The laboratory dis-
charged the suspects and, where fea-
sible, the Army inducted them into
service, placing them in nonsensitive
assignments in which they could be
kept under regular observation.^'*
The District's CIC Detachment
scarcely had completed breaking the
original espionage chain at Berkeley
when, in late August, Oppenheimer
reported his suspicion that new leaks
apparently had developed in the lab-
oratory's security system. On the oc-
casion of a visit to Berkeley, Oppen-
heimer met with Colonel Pash and
told him he had learned that a
24MPC Rpt. 21 Aug 43, MDR; MPC Min, 29 i:)ec
44, Exhibit F (summary of L'.S. -based counterintelli-
gence developments affecting Manhattan Proj),
OCG Files, Gen Corresp, MP Files, Fldr 23, Tab A.
MDR; Rpt, sub: Siunmary [of] Russian Situation,
Incl to Memo, Groves to Secy State James F.
Byrnes, 13 May 45, OCG Files, Gen Corresp, MP
Files, Fldr 12, tab D, MDR.
member of the University of Califor-
nia staff, a man who had been a close
friend, was acting as an intermediary
for transmission of data from certain
Radiation Laboratory employees to
representatives of the Soviet Union.
By Oppenheimer's account, his friend
had been recruited by an official of
the Federation of Architects, Engi-
neers, Chemists, and Technicians, a
CIO (Congress of Industrial Organi-
zations) union currently trying to or-
ganize employees of the Radiation
Laboratory. In subsequent question-
ing, Oppenheimer refused to disclose
the name of his friend on the grounds
that he was certain the friend was no
longer passing information to Soviet
representatives. Oppenheimer's un-
cooperativeness at this juncture re-
sulted in the Manhattan commander
taking personal action. Groves
promptly met with the Los Alamos
Laboratory chief and, because the se-
curity of the atomic project was at
stake, ordered him to reveal the name
of his friend. Faced with Groves's in-
sistence in the matter, Oppenheimer
named Haakon Chevalier, a professor
of romance languages at the Universi-
ty of California. A short time later,
the university dismissed Chevalier
from his teaching post and he left
Berkeley. In retrospect, the likelihood
that Chevalier passed any classified
information about the project to the
United States seems remote. ^^
2^ In 1954, Oppenheimer testified before the
AEC's Personnel Security Board, which was holding
hearings to consider serious charges against the
former director of the Los Alamos Laboratory that
would lead ultimately to the withdrawal of his gov-
ernment security clearance. Oppenheimer admitted
that he had fabricated the story about Chevaliers
espionage activities; however, he never adequately
C.oniinued
seciirhv
265
rhc (Ihcvalier case was not the
final incident of espionage at the Ra-
diation Laboratory. Less than a year
later, another serious security leak
had developed there. With assistance
from Communist Party members
living in the San Francisco area, a key
scientist from the laboratory met with
officials from the local Soviet consul-
ate. The scientist passed on informa-
tion concerning the pile process, cer-
tain chemical data, and the recently
arrived British scientists. The Dis-
trict's CIC Detachment was able to
end this espionage activity effectively
by securing immediate discharge of
the offending scientist, after which, as
far as is known, representatives of the
Soviet Union made no further at-
tempts to get information from the
Berkeley project. ^^
Meanwhile, probably acting on the
l)asis of information gained at the Ra-
diation Laboratory, the Russians had
assigned one of their best men to the
Chicago area, with the task of estab-
lishing an espionage channel at the
Metallurgical Laboratory. By early
1944, this Soviet agent, who was a
explained whv he had done so. Oppcnheinier's testi-
mony in 1954 and documents relating to it are in
Oppenheimer Heunng, passim. For fuller accounts of
the Oppenheimer case sec Strauss, Men and Deci-
sions, pp. 267-95, and Philip M. Stern, The Oppen-
heimer Case: Serunty on Trial (New \'ork: Harper and
Row, 1969). For further details on espionage activi-
ties at the Radiation Laboratory and the Oppen-
heimer case see MPC Rpt. 4 Feb 44, OCG Files,
(;en Corresp, MP Files, Fldr 25. Tab C. MDR; Rpt.
sub: Summary [of] Russian Situation, Incl to Memo,
Cirovcs to Byrnes. 13 May 45, MDR; Intcrv, Author
with Lt Col Peer de Silva (former (^IC staff member,
(i-2. West Def Cmd, with special assignment to
Rad Lab), 8 Apr 75. CMH; Diary of Lt Col E. H.
Marsden (hereafter cited as Marsden Diary), 20 July
43, OROO. Marsden was the District's executive
olluer.
-'^MPC Mm, 10 Mav 44, MDR; MPC Rpt, 7 Aug
44, MDR; Rpt, sub: SunmiarN |oi| Russian Situ;.li<)n.
hid to Memo, Cioves to BMurs. 13 Mav 45, MDR.
highly trained engineer with working
experience in both Russian and
American industry, had made contacts
with several Metallurgical Laboratory
employees. By the time the FBI
learned of his activities in April, the
Soviet agent had obtained consider-
able technical information, which he
had passed on to the Russian consul-
ate in New York. Once identified, the
laboratory summarily dismissed the
suspected employees. Subsequently,
the District's CIC Detachment discov-
ered that one of the discharged work-
ers— a reserve officer who had been
called to active duty and assigned to
the Northwest Territory in Canada —
had taken highly classified material
with him when he left the Metallurgi-
cal Laboratory. Fortunately, District
security officials were able to arrange
for confiscation of this material (it
was located in the officer's baggage)
and for transfer of the officer to a
post in the Pacific Theater of Oper-
ations where he would have no op-
portunity to pass on his knowledge to
Russia or the Axis powers. ^^
Judged in terms of the ultimate util-
ity of the information gained, Russian
efforts at espionage at the Los
Alamos Laboratory in late 1944 and
early 1945 — the crucial period of
bomb development — were the most
successful of the wartime period. But
project counterintelligence agents did
not learn of this activity until the late
summer of 1945, after the war was
over. In a sensational postwar trial,
Julius and Ethel Rosenberg and
Morton Sobell were convicted of steal-
ing classified data from the laboratory
^'Rpt, sub: Summarv |ofl Russian Situation, Incl
to Memo, Cloves to Bvtnes, 13 Mav 45. MDR.
266
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
with the assistance of Mrs. Rosen-
berg's brother, David Greenglass, an
Army sergeant at Los Alamos, and of
transmitting it to Russian agents. Los
Alamos, too, was the place where the
German refugee scientist, Klaus
Fuchs, while serving as a member of
the British team sent to the United
States under the interchange pro-
gram, gained a substantial part of the
technical knowledge of the bomb that
he subsequently passed on to the
Russians, first in June 1945 and
thence periodically until his arrest by
British authorities in early 1950.^^
Project leaders also had antici-
pated that, as the Russians, the
Axis powers — particularly Germany —
would launch an equally vigorous es-
pionage campaign, but they uncov-
ered no evidence of such activity
during the war. In early 1944, at a
time when available Allied intelli-
gence indicated that the Germans
might well have attained an advanced
stage in the development of atomic
weapons, the Military Policy Commit-
tee reported to the Top Policy Group
that "no espionage activities by the
Axis nations with respect to this
project have been discovered, al-
though there have been suspicious
indications." ^^
Measures Against Sabotage
In a project where the ultimate goal
depended upon continuous progress
^* Postwar revelations of espionage activities at
Los Alamos during Worid War II may be traced in
Groves, Xow It Can Be Told. pp. 143-45, and in Rich-
ard G. Hewlett and Francis Duncan, Atomic Shield.
1947-1952. A Histon,- of the United States Atomic
Energy Commission, Vol. 2 (University Park, Pa.:
Pennsvlvania State University Press, 1969), pp. 312-
14,415,472.
29MPC Rpt, 4 Feb 44, MDR.
in intricate and closely related pro-
duction processes, unscheduled
delays or interruptions of any kind
could be disastrous. Sabotage in any
form, whether perpetrated by outsid-
ers or insiders bent upon slowing
down or disrupting a particular pro-
cess, constituted an ever-present
hazard. Recognizing the seriousness
of this threat. General Groves direct-
ed that any suspicion of sabotage be
reported to him immediately. In keep-
ing with Groves's policy of constant
vigilance to detect any hint of sabo-
tage, the District's CIC Detachment
thoroughly investigated every instance
of mechanical failure, equipment
breakdown, fire, accident, or similar
occurrence not readily attributable to
normal causes, and kept under con-
stant observation all processes and ac-
tivities that might attract the efforts of
saboteurs. In addition, other security
personnel regularly inspected the se-
curity systems and personnel clear-
ance procedures at the project's vari-
ous installations, with the objective of
detecting and correcting possible
weaknesses that might invite
sabotage. ^°
Illustrative of Groves's policy was
the investigation into the mystifying
failure of the first great magnets in-
stalled in the electromagnetic plant at
the Clinton Engineer Works. Follow-
ing a brief period of operation, the
magnets began to malfunction. After
aoMDH, Bk. 1, Vol. 14, pp. 2.5-2.6, DASA. For a
detailed discussion of typical measures undertaken
to provide for the physical and personnel security of
a specific project installation — in this instance, the
gaseous diffusion project at Clinton — see MDH,
Bk. 2, Vol. 1, "General Features," pp. 6.2-6.3, Vol.
2. "Research," pp. 9.2-9.4, Vol. 3, "Design," pp.
16.2-16.6, Vol. 4, "Construction," p. 4.2, and \'oI.
5, "Operation," pp. 9.2-9.10, DASA.
SECURITY
267
disassembling one of the magnets
piece by piece, Kellex engineers
found that in its oil circulation and
cooling system rust and dirt particles
were bridging the gaps between the
silver bands forming the coil compo-
nent, which they attributed to the
manufacturer's failure to maintain
sufficiently rigid standards of cleanli-
ness. The significance of this incident
was that it revealed the inherent vul-
nerability of the electromagnetic in-
stallations and the need for constant
surveillance in order to thwart possi-
ble sabotage. ^^
The district's continuous and thor-
ough efforts to protect the project's
installations and operations against
sabotage were signally successful.
During the war years, there were no
definitely established incidents of sab-
otage traceable to enemy agents. In
most cases where breakdowns or
other failures occurred under suspi-
cious circumstances, investigations re-
vealed they were probably the result
of causes other than enemy sabotage.
For example, during construction of
the original gaseous diffusion plant at
the Tennessee site, inspectors discov-
ered someone had driven nails
through the rubber coverings of vital
electric cables leading underground
from the power plant to the main
production plant. The perpetrators of
this act were never found, although
the evidence indicated strongly it was
the work of disgruntled employees. ^^
3' Groves, Xow It Can Be Told, pp. 104-05; MDH,
Bk. 5, Vol. 3, "Design," p. 4.6, and Vol. 5, "Con-
struction," pp. 3.10-3.11, DASA.
32 Groves, Xow It Can Be Told, pp. 112-13; Com-
pletion Rpt, M. W. Kellogg Co. and Kellex Corp.,
sub: K-25 Plant, Contract W-7405-eng-23, 31 Oct
45, p. 12, OROO.
A quite different type of interfer-
ence with plant operation briefly
threatened the Hanford Engineer
Works in early 1945. Groves reported
to the Military Policy Committee in
February that Army and Navy intelli-
gence had recorded more than fifty
incidents of Japanese balloons at vari-
ous sites along the Pacific Coast,
some of them carrying incendiary and
fragmentation bombs. While none of
these appears to have been directed
specifically against the Hanford instal-
lations, on 10 March a balloon of this
type struck a high-tension transmis-
sion line running between the Grand
Coulee and Bonneville generating sta-
tions and caused an electrical surge
through the interconnecting Hanford
line that carried power to the produc-
tion piles. Automatic safety devices at
the three piles were activated, briefly
shutting down their operation. For-
tunately, the bombs attached to the
balloon did not explode and the
transmission line was not seriously
damaged. ^^
Other Functions
One of the most unusual duties as-
signed to the District's CIC Detach-
ment was that of furnishing body-
guards for key Manhattan scientific
leaders. CIC personnel accompanied
J. Robert Oppenheimer, Ernest Law-
rence, Arthur Compton, and Enrico
Fermi almost continuously. They ac-
companied other scientists at inter-
vals, when they were at work on
projects that required their special
^^MPC Min, 24 Feb 45, MDR; Memo, Matthias to
Groves, sub: 10 Mar 45 Power Outage, 29 Mar 45,
Admin Files, Gen Corresp, 675, MDR; Matthias
Diary, 25 Feb and 10-1 1 Mar 45, OROO.
268
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
protection. Colonel Marshall had
originated the idea of bodyguards,
suggesting that they serve also as
drivers, to conceal their true function
and to reduce the likelihood of acci-
dents. Compton's bodyguard, a
former Chicago policeman, traveled
with him in the guise of a special as-
sistant. When Compton was in resi-
dence at Oak Ridge, his guard served
as a member of the local police force.
District security officials exercised
considerable care in selecting individ-
uals for bodyguards, seeking those
who had demonstrated ability to
adapt themselves readily to the kind
of situations in which scientists were
likely to be involved. ^^
Safeguarding Militayy informatwn
Even though District security offi-
cials had planned and implemented a
multi-faceted security system to pro-
tect all aspects of project operations
and developments, they fully realized
that maintenance of total secrecy in
such a vast project was unlikely. What
was more feasible, they believed, was
to prevent leakage of any useful
knowledge of the program's special
scientific concepts, industrial tech-
niques, and military objectives — or, in
Army parlance, "safeguarding military
information." ^^
s-'MDH, Bk. 1, Vol. 14, pp. 2.10-2.11, DASA:
Marsden Diary, 20 Jul 43, OROO; Nichols, Com-
ments on Draft Hist "Manhattan," Incl to I.tr, Nich-
ols to Chief of Mil Hist, 25 Mar 74. CMH: Comp-
ton, ,4/om/f Q««/, pp. 183-84.
35 AR 380-5, 28 Sep 42. The War Department
issued a substantially revised version ot AR 380-5
on 15 Mar 44, adding the category Top Secret to
the previously existing categories Secret, Confiden-
tial, and Restricted. See Sec. 1, par. 3.
Compartmentalization Policy
Under the provisions of Army secu-
rity regulations, the basic responsibil-
ity for the protection of classified in-
formation rested upon "all military
personnel, civilian employees of the
War Department, and . . . the man-
agement and employees of all com-
mercial firms engaged in classified
work or projects for the War Depart-
ment." ^^ In applying this principle to
the atomic program. District security
officials placed particular emphasis
upon limiting the amount of classified
information permitted to any single
individual or group of individuals.
District security regulations estab-
lished two basic rules which were to
"govern the right to possess classified
information"; a person must need the
information in order to carry out his
job and have access only to the
amount of information "necessary for
him to execute his function." To
make doubly certain an individual em-
ployee was restricted to "the mini-
mum necessary for the proper
performance of his duties," District
regulations further directed that "em-
ployees . . . shall be organized into
small working groups or teams so far
as possible, each working on its own
phase of the job and not being per-
mitted to inspect or discuss the work
being done by others." ^"^
This compartmentalization policy
became a far more pervasive influ-
ence in the project after the Army as-
36 Ibid., Sec. 1. par. 9.
3' Qiiotations from MD, Intel Bull 5, Safeguard-
ing Mil Info Regs, 27 Nov 43 (revised 1 Sep 44),
Sec. 3, reproduced hi MDH, Bk. 1, Vol. 14, App.
B7. DASA.
SECURITY
269
Security Sign at the Tennessee Site
sumed full responsibility for its ad-
ministration. Where the OSRD had
applied compartmentalization primar-
ily to research and development orga-
nizations, the Army incorporated it
into virtually every type of activity un-
dertaken by the project. Typical was
the District's insistence that produc-
tion plant blueprints be broken down
and distributed in such a way as to
reveal as little as possible to any one
individual about the overall character
of the project. Similarly, the District
required that equipment orders to
commercial firms specify that an item
not be manufactured and assembled
at the same location. And when the
production plants reached the point
of start-up operations, plant managers
received instructions to split up
orders for raw materials among a
number of suppliers so that the pur-
pose for which they were being used
could not be readily ascertained.
While project leaders agreed that
some compartmentalization of infor-
mation was necessary, considerable
difference of opinion prevailed on the
extent of limiting scientific and tech-
nical interchange, both between sec-
tions functioning within a laboratory
or plant and between the various in-
terrelated installations of the project.
Military administrators, in contrast to
their civilian counterparts, favored the
enforcement of stricter controls.
These generally took the form of
written agreements covering those or-
ganizations and installations that
needed to exchange data. The agree-
ments specified in detail how and
what information could be inter-
270
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
changed. Inevitably occasions arose
when developments required inter-
change of classified information not
covered in agreements. In such in-
stances, project leaders applied di-
rectly to the district engineer or to
General Groves for special permission
to exchange the data needed.^®
One of the most important inter-
change arrangements formed oc-
curred in June 1943, when General
Groves met with Compton and Op-
penheimer for the purpose of estab-
lishing "the principles which should
govern the interchange of information
between the Chicago [Metallurgical
Laboratory] and Los Alamos proj-
ects. . . ." As a basic criterion deter-
mining what information should be
interchanged, they set up the test that
only data that would "benefit work at
both Chicago and Los Alamos"
should be exchanged. The agreement
that resulted spelled out, in consider-
able detail, exactly what information
could and could not be interchanged
(the latter included those categories
relating to production piles, military
weapons, and the time schedules of
various developments); designated by
name those individuals at each instal-
lation who were qualified to carry on
interchange; and outlined exact pro-
cedures of exchange — by formal re-
ports, secret correspondence, or visits
and conferences. On the most sensi-
tive matters, or where there was seri-
ous doubt about interchange, the only
38 Groves, \ow It Can Be Told. pp. 80 and 140;
Govving, Britain and Atomic Energy, p. 150; Talk,
Groves to Women's Patriotic Conf on Natl Def (25-
27 Jan 46), sub: "The Atomic Bomb," Admin Files.
Gen Corresp, 337 (Women's Patriotic Conf on Natl
DeO. MDR; Memo, Marshall to Only Those Con-
cerned, sub: DSM Proj-Clinton Engr Works, 18 May
43. OCG Files, Gen Corresp, MP Files, Fldr 28, Tab
A, MDR; MDH, Bk. 1, Vol. 14, pp. 6.3-6.4, DASA.
channel of exchange was through a
visit to the Chicago laboratory by
either Oppenheimer or a specifically
designated group leader. Although
negotiators of the agreement must
have been aware of the generally re-
strictive character of its provisions,
they nevertheless emphasized that its
major objective was "to maintain as
rapid and effective interchange of in-
formation as possible." ^^
Compartmentalization of informa-
tion probably aroused more adverse
criticism — both from participants in
the atomic program and from some of
those who, in retrospect, have re-
viewed its history — than any other
single aspect of the project's security
system. Among the participants, the
most vociferous critics were the scien-
tists, accustomed to working in col-
lege and university laboratories where
they could freely interchange the re-
sults of their work with scientific col-
leagues in all parts of the world.
Project scientists, such as Leo Szilard,
held that overcompartmentalization
was a primary cause of extended
delays in achievement of scientific and
technical objectives of the program.
Testifying before a committee of
Congress after the war, he asserted,
for example, that "compartmentaliza-
tion of information was the cause for
. . . failure to realize that light urani-
um [U-235] might be produced in
quantities sufficient to make atomic
bombs. . . . We could have had it
eighteen months earlier. . . . We did
not put two and two together because
the two two's were in a different com-
^^ Memo, Groves to Compton and Oppenheimer,
sub: Interchange of Info Between Chicago and Los
Alamos, 17 Jun 43, Admin Files, Gen Corresp, 201
(Tolman), MDR.
SECURITY
271
partment. . . ." *° On another occa-
sion he contended also that compart-
mentalization was not really "too suc-
cessful" because "significant matters
gradually leak through anyway." "^^
Joining Szilard in condemning com-
partmentalization in the strongest
possible terms was Edward U.
Condon, the prominent American
physicist who had come to the atomic
project from the Westinghouse Re-
search Laboratories. In fact, after
spending only a month at Los
Alamos, Condon came to the conclu-
sion that he would be of more use to
the war effort at Westinghouse than
at the New Mexico laboratory. The
project's security policy, he asserted,
had a morbidly depressing effect on
him. "I feel so strongly," he contin-
ued, "that this policy puts you in the
position of trying to do an extremely
difficult job with three hands tied
behind your back that I cannot accept
the view that such internal compart-
mentalization ... is proper." ^^
Most other contemporary critics
took a somewhat less extreme posi-
tion. Concerned about insufficient in-
terchange of data among atomic
project scientists causing delays in the
solutions of problems related to
bomb development, Compton sug-
gested to the OSRD S-1 Committee
in December 1942 that it might be
'"' Excerpts from Szilard's statements before Sen-
ate Special Committee on Atomic Energy given in
Memo, Nichols to Groves, 12 Jan 46, Admin Files,
Gen Corresp, 201 (Szilard), MDR.
■** Memo for File, William S. Shurcliff, sub: Tran-
script of Notes Taken on 8-11 Oct 44 Trip to Chi-
cago, 14 Oct 44, Admin Files, Gen Corresp, 001
(Mtgs), MDR. Shurcliff, a liaison official with the
OSRD, talked to Szilard about security measures
and recorded his comments in this memorandum.
''^ Ltr, Condon to Oppenheimer, 26 Apr 43, In-
vestigation Files, Gen Corresp, Personnel Scty In-
vestigations (Condon), MDR.
wise to increase the number of "re-
sponsible persons who are free of
compartmentalization. . . ." *^ Simi-
larly, in June 1943, physicist Richard
C. Tolman, in his role as Groves's sci-
entific adviser, expressed concern that
the "proposed regulations [to govern
interchange between the Chicago and
Los Alamos scientists were] perhaps
not quite as liberal as may later prove
warranted." In the weeks following
the institution of these regulations,
both Oppenheimer and Edward
Teller, who was working on a part-
time basis at Los Alamos, were trou-
bled by what they viewed as inad-
equate liaison channels between the
New Mexico laboratory and the other
installations where related work was
in progress.'*'*
When British officials and scientists
came to the United States in late
1942, they were surprised to learn
that General Groves planned further
compartmentalization, which many of
them viewed as already having been
applied to an extent that made effi-
cient operation impossible. Further-
more, the British soon found that the
Americans used the policy as a con-
venient excuse for withholding infor-
mation. Thus, the policy became in-
termeshed with the whole question of
interchange with the British, a prob-
lem that was resolved only after many
months of negotiation.^^
'^^ Ltr, Compton to Conant, 8 Dec 42, Admin
Files, Gen Corresp, 319.1, MDR.
*■* Ltr, Tolman to Groves, 1 1 Jun 43, Admin F"iles,
Gen Corresp, 000.71 (Releasing Info), MDR. See
also Ltr, Teller to LIrey, Incl to Memo, Nichols to
Groves, 1 1 Aug 43, and Ltr, Oppenheimer to
Groves, sub: Liaison With Site X, 4 Oct 43, Admin
Files, Gen Corresp, 001, MDR.
''^ Gowing, Bntain and Atomic Energy, pp. 150-51.
See Ch. X.
272
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
By early 1944, most project person-
nel had come to accept the policy as a
fact of life. In looking back after the
war was over, even some scientists
who had found compartmentalization
so distasteful grudgingly conceded it
had probably been necessary. The
eminent American (German-born)
physicist James Franck, for example,
while speaking at a conference on
atomic energy at the University of
Chicago in September 1945, conclud-
ed that "so far as secrecy is con-
cerned, they [Army officers] were un-
relenting and, in all honesty, we have
to admit that they had to be." But, he
went on to remind his listeners that
the policy had exacted a "stiff price"
in the "wasting of talent and scientific
manpower and the loss of precious
time. . . ." "^^
From the military point of view,
compartmentalization was precisely
what was required, both for security
and for achieving the most efficient
functioning of scientists and technolo-
gists. As (reneral Groves expressed
his conviction in retrospect:
Compartmeniaiization of knowledge, to
me, was the very heart of security. My
rule was simple and not capable of misin-
terpretation— each man should know ev-
erything he needed to know to do his job
and nothing else. Adherence to this rule
not only provided an adequate measure
of security, but it greatly improved over-
all efficiency by making our people stick
to their knitting. And it made quite clear
to all concerned that the project existed
to produce a specific end product — not to
enable individuals to satisfy their curi-
osity and to increase their scientific
knowledge.'*'
PoUcy Exception: Informing Congress
The District's policv of compart-
mentalization of information on the
atomic project, in Groves's words, ap-
plied "to everyone, including mem-
bers of the Executive Department,
military personnel and members of
Congress." No one was to have access
"solely by virtue of his commission or
official position." Adherence to this
policy was possible as long as Man-
hattan's funding came from sources
already earmarked for the War
Department. But project leaders
anticipated considerable trouble in
the future, because securing new
funds would entail congressional
authorization.^^
By early 1944, the compartmentali-
zation policy was becoming less and
less feasible with Congress because of
the increasing size of the program, its
rapidly rising cost, and the need to
begin planning for its postwar admin-
istration. Under the original directive
from the President, the atomic pro-
gram obtained funds from the money
appropriated under the Engineer
Service-Army budgetary category.
Funds from this source sufficed as
long as Manhattan's budgets re-
mained relatively modest. But when
project leaders estimated that the
program would need at least $600
million for fiscal year (FY) 1945, they
decided they would have to find a way
to provide some information to se-
lected members of Congress who had
a need to know. They consulted with
President Roosevelt, who thereupon
■•^As quoted by Alice Kimball Smith in A Peril and
a Hope: The Scientists' Movement in America, 1945-47
(Chicago: University of Chicago Press, 1965), p. 95.
"'Groves, Now It Can Be Told, p. 140.
■"Ibid, (source of first quotation), p. 360; MD,
Intel Bull 5, Safeguarding Mil Info Regs (source of
second quotation), 27 Nov 43 (revised 1 Sep 44),
Sec. 3, DASA.
SECURITY
273
directed that Stimson, Bush, and
General Marshall brief the leaders of
both parties in the House and the
Senate."*®
On 18 February, Stimson, Bush,
and Marshall went to the office of
Speaker of the House Sam Rayburn,
where they were joined by Majority
Leader John W. McCormack and Mi-
nority Leader Joseph W. Martin, Jr.
Stimson outlined the history of the
atomic project, including its cost to
date, and estimated the total amount
needed to complete it; Bush de-
scribed the project's scientific back-
ground and indicated the likely de-
structive power of an atomic weapon;
and Marshall discussed the potential
role of atomic bombs in the Allied
strategy for winning the war. The leg-
islators pledged their unreserved sup-
port, stating that they viewed its high
cost as well worth the price. They
promised to work out a system for
handling the Manhattan appropria-
tions in committee so that there
would be no danger of disclosure of
their purpose. Bush found that the
"entire meeting was most reassuring,
as it was quite evident the three
congressmen were exceedingly anx-
ious to be of aid to the War Depart-
ment in carrying a very heavy
responsibility." ^°
In June, Stimson, Bush, and Maj.
Gen. George J. Richards, the War De-
partment budget officer who was sub-
stituting for Marshall while he was
out of town, repeated the briefing for
"^MDH, Bk. 1, Vol. 4, "Auxiliary Activities,"
Ch. 1, pp. 2.4-2.5, DASA. Groves, \'ow It Can Be
Told. pp. 360-62; Stimson Diary, 14-15 Feb 44,
HI.S.
^°Memo, Bush to Bundv, 24 Feb 44. OCG Files,
Gen Corresp, MP Files, Fldr 14, Tab A, MDR;
Stimson Diary, 18 Feb 44, HI.S.
the leaders of the Senate. Present
were Majority Leader Alben W. Bar-
kley and Minority Leader Wallace H.
White, as well as Chairman Elmer
Thomas and Senior Minority Member
Styles Bridges of the military subcom-
mittee of the Senate Appropriations
Committee. Stimson recalled that
"the four gentlemen who met with us
were very much impressed. They . . .
promised that they would help and
keep absolute silence about it and
prevent discussion in public as to
what it was about." ^^
During the remaining months of
1944, congressional leaders succeed-
ed in keeping the vast majority of the
members of Congress ignorant of the
atomic project. Accustomed to war-
time restrictions, most members were
willing to accept — without protest —
the assurance of their leaders that the
work was secret and that the needed
apropriations were essential to the
war effort. But for a few members this
policy was unacceptable, and they di-
rected individual inquiries to the War
Department about rumored develop-
ments at the atomic sites.
A case in point was Congressman
Albert J. Engel of Michigan, a
member of the House Appropriations
Committee, who in February 1945
was unwilling to accept automatically
the War Department's request for FY
1946 funding from money appropri-
ated under the Expediting Production
budgetary category. In a visit to
Under Secretary Patterson on the
twenty-fourth, the Michigan repre-
sentative stated that he had heard
*' Stimson Diary (source of quotation), lOJun 44,
HLS; Memo lor File, Bush, 10 Jun 44, OCG Files,
Gen Corresp, MP Files, Fldr 14, Tab A, MDR;
MDH, Bk. 1, Vol. 4, Ch. 1. pp. 2.8-2.11. DASA.
274
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
rumors of extravagance and waste
and that he wanted more information
before approving the War Depart-
ment's FY 1946 funds. Remembering
that in late 1943 War Department of-
ficials had dissuaded him from
making a proposed trip to the Clinton
site, this time he firmly insisted that
Patterson allow him to inspect the
atomic installations. When Stimson
heard from Patterson of Engel's in-
sistence upon visiting project facili-
ties, he sought assistance from the
leaders of the House of Representa-
tives. As Speaker Rayburn was away,
Stimson turned to Congressman John
Taber of New York, another member
of the Appropriations Committee. He
and Taber sat down with Engel and
persuaded him to forgo objections to
funds on the floor of the House, but
only after promising him an opportu-
nity to visit some "outside installa-
tions" of the project. ^^
This experience convinced the Sec-
retary of War and the Manhattan
commander, as well as other project
leaders, that more and more members
of Congress would be demanding
current information about Manhat-
tan's activities. Consequently, they ar-
ranged to have a selected delegation
from each House visit Clinton and, if
they wished, also Hanford. With the
President's approval for this plan.
Groves and Stimson, accompanied by
the Secretary's aide. Col. William H.
Kyle, visited Clinton on 10 April to
prepare "for future trouble with
Congressmen." ^^
Upon the unexpected death of
Roosevelt on the twelfth, the inspec-
tion trip to Clinton was delayed, but
only temporarily. In May after Presi-
dent Truman had given his assent.
Speaker Rayburn helped select five
members from the House Appropria-
tions Committee — Clarence Cannon,
the chairman, George H. Mahon,
J. Buell Snyder, Engel, and Taber.
Under the careful guidance of the
Manhattan commander and the dis-
trict engineer, the five congressmen
spent two days inspecting the Clinton
Engineer Works. The legislators re-
turned to Washington convinced that
public funds had been well spent and
prepared to support the project's
budgetary requests for FY 1946. A
visit by a comparable Senate delega-
tion to inspect atomic facilities was
not feasible until after V-J Day, when
a group from the upper house toured
the Hanford Engineer Works. ^*
Administrative Aspects
As security requirements increased,
the Army established a variety of
units to administer its highly compart-
mentalized information security pro-
gram. By necessity, the program from
about late 1942 up until the District's
major intelligence and security reor-
ganization in early 1944 was limited
in scope. Faced with a rapid influx of
new personnel, both civilian and mili-
*^ Stimson Diary, 26 (source of quoted words) and
28 Feb 45, HLS; Groves, Now It Can Be Told. p. 363;
MDH, Bk. 1, Vol. 4, Ch. 1, pp. 2.5-2.6, DASA.
S3 Stimson Diary, 31 Mar 45, HLS.
54 Ibid., 15 Mar, 2, 6-11, and 25 Apr, 4 and 30
May 45, HLS. Groves Diary, 22-24 May 45, LRG.
Notes on Trip to Knoxville, Tenn., 10 Apr 45, Incl
to Memo, Kyle to Bundy, 1 1 Apr 45; Ltrs, Stimson
to Bush, 31 Mar 45, and Bush to Stimson, 2 Apr 45.
All in HB Files, Fldr 7, MDR. MDH, Bk. 1, Vol. 4,
Ch. 1, pp. 2.12-2.13, DASA. Groves, AW // Ca?i Be
Told, pp. 363-65. Hewlett and Anderson, Xew World,
pp. 302 and 339-40.
SECURIIY
275
tary, the District's Protective Security
Section concentrated chiefly on devel-
oping ways for instructing them in the
meaning of classified information and
the correct methods for handling it.
To facilitate this education process,
the small staff hurriedly prepared and
distributed a manual that provided a
"statement of District policy regard-
ing Protective Security proce-
dures . . . ," including an extensive
section on safeguarding classified
information.^^
An intensification of protective
measures during the first half of 1943
resulted in the establishment in
August of the Plant Security Section
for Safeguarding Military Informa-
tion. In an effort to assure attainment
of the desired security objectives, the
SMI staff developed a new intelli-
gence bulletin. This bulletin, issued
in November, set forth in detail the
requirements and procedures for
safeguarding military information,
emphasizing that "matters of vital im-
portance to the government must be
protected at all times whether at war
or at peace . . . [and thus] great cau-
tion [must] be exercised in the han-
dling and in the dissemination of all
information — written or oral — relative
to this Project at any time." ^^
By early 1944, consolidation of the
District's intelligence and security fa-
cilities opened the way for a more
comprehensive information security
program, and the establishment in
May of a separate SMI Section (redes-
ignated SMI Branch in 1945, when
organizationallv restructured as a sub-
ordinate unit of the District's Intelli-
gence and Security Division). Under
the expanded program, security offi-
cials launched studies of all aspects of
the atomic project — equipment, mate-
rial, products, processes, operations,
administrative matters — to determine
the appropriate classification for their
mention in correspondence and other
documents. They set up code names
(some already in use) for major sites,
important materials, items of equip-
ment, and even for the more widely
known scientists working on the
project. Under this scheme, for exam-
ple, Los Alamos became Site Y, pluto-
nium became 94, the implosion bomb
became Fat Man, and scientist Arthur
H. Compton became A. H. Comas.
Using the staff and resources of the
SMI Section, District authorities di-
rected attention to those areas where
security leaks were most likely to
occur. Thus, the section regularly re-
viewed project correspondence with
other government agencies, such as
the Selective Service concerning de-
ferment of key personnel, and advised
on the security classification that
should govern each of the thousands
of contracts that the District negoti-
ated with outside individuals and
firms. ^"^
The establishment and maintenance
of effective adherence to security re-
quirements among the project's thou-
sands of contractor organizations
comprised one of the most challeng-
ing and complex aspects of the infor-
"WD, VS. Kngrs onkc, MD, Protective Sctv
Manual. 1 Feb 43. reproduced in MDH, Bk. 1, X'ol
14, App. (;5, DASA.
5« MD, Intel Bull 5. Safeguarding Mil Info Regs,
27 Nov 43 (revised 1 Sep 44). Sec. 3, DASA.
"MDH. Bk. 1. Vol. 14, pp. 6.3-6.5, DASA
Memo, Marshall to Onlv Those Concerned, sub
DSM Pioj-Clinton Kngr Works, 18 May 43, MDR
Ltr. Oppenheimer to Oroves, sub: [L'se of Cover
Names], 2 Nov 43, Admin Files, Gen Corresp. 680.2
(Visits), MDR; Compton, Atomic Quest, p. 182.
276
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
mation security program. District au-
thorities oversaw contractors' security
activities through several channels.
The branch intelligence offices in
principal cities throughout the United
States provided a convenient point of
contact, and periodic checks of con-
tractor facilities and operations by se-
curity inspectors from District head-
quarters constituted a second avenue
of control. These inspectors particu-
larly observed methods of handling
classified materials and storing docu-
ments. District security officials also
investigated contractors' personnel
recruitment programs, written corre-
spondence, stock registration state-
ments to the Securities and Exchange
Commission, and similar activities in
which security leaks were likely to
occur. Finally, when a contractor ter-
minated his contract with the atomic
program. District security officials
made certain that all classified materi-
als were returned to project control
or that the contractor provided for
their adequate protection.^®
Security problems involving firms
under contract most frequently arose
where these organizations were carry-
ing out large-scale development of
project facilities. Such development,
as at the Clinton and Hanford sites,
inevitably brought overcrowding of
local housing, acute labor shortages,
greatly increased road traffiic, and
other adverse changes that placed a
severe strain on normal community
activities. The resulting public resent-
ment, generally focused on the con-
tractor firms, created an environment
in which threats to security were more
likely to occur. In the spring of 1943,
for example, Du Font's effort to ar-
range for housing and other facilities
for the thousands of employees who
would work on the Hanford project
stirred up resentment in surrounding
communities, already aroused by the
Army's land acquisition program. The
spread of rumors, adverse criticism in
the local newspapers, and unfounded
statements by local officials tended to
draw widespread public attention to
the project, posing a serious threat to
security. Lt. Col. Franklin T. Matthias,
the Hanford area engineer, and mem-
bers of his staff spoke at meetings of
service clubs in communities adjacent
to the project, in an endeavor to
counter the rumors and misinforma-
tion concerning Du Font's role in the
project. By these and similar efforts
they laid the groundwork for obtain-
ing the support and good will of the
local citizenry — an absolute essential
to maintaining the security of the
project. ^^
Efforts to maintain good communi-
ty relations was an important aspect
of the District's information security
program, which had as its prime ob-
jective the forestalling of security
breaks, first by anticipating them and
second by teaching project personnel
how to be "instinctively alert-minded
and security-wise." ^° Although the
SMI Section had primary responsibil-
ity for carrying out the program, em-
ployee education in security matters
devolved chiefly to the SMI staffs at
the branch intelligence offiices. Each
staff, for example, conducted orienta-
ls MDH. Bk. 1, Vol. 14. pp. 6.7-6.8. DA.SA.
^^ Memo, MaUhias to Groves, sub: Public Mtgs in
Which Du Ponl Participated, 23 Apr 4?>. Admin
Files, Gen Corresp, 001 (.Mtgs), MDR; Matthias
Diary, 20 and 28 Apr 43, OROO.
«OMD, Intel Bull 3, Sctv Plducational Prgm,
1.^ Sep 4,3, reproduced in MDH, Bk. 1, \'()l. 14,
App B8, DA.SA.
SECURITY
277
tion and refresher sessions for Corps
of Engineers personnel; provided
each contractor with instructional ma-
terials for in-house security education
briefings for its personnel; and used a
variety of media — training films, cir-
culars and handbills, payroll inserts,
telephone stickers, and editorials in
project newspapers — to remind Dis-
trict employees of the importance of
unremitting attention to the demands
of security. ^^
Because of the policy of compart-
mentalization, the quantity and varie-
ty of educational subject matter avail-
able for training purposes was limit-
ed. Most workers had knowledge of
only the project activity under way at
the site where they were employed,
and most generally did not even know
exactly what was being made in the
facility where they worked. And even
in some instances, project officials
had concocted for employees — those
working at the electromagnetic
plant — a plausible but inaccurate and
misleading explanation of the process
involved and the product produced,
with the warning that this information
was given to them only to help them
carry out their jobs. Lacking concrete
data on which to base an appeal to
employees, security officials had to
request that they accept the necessity
for strict adherence to secrecy largely
on faith and out of a sense of patriot-
ism and loyalty to the men on the
fighting fronts.
As did most wartime agencies in-
volved in secret work, the Manhattan
District resorted to censorship of vari-
ous kinds as a means of safeguarding
classified information. In the first few
months after the Army assumed re-
sponsibility for the atomic program,
the District and branch security staffs
began a cursory review of a few lead-
ing daily newspapers and periodicals
and gradually enlarged this check of
publications until it covered some 370
newspapers and 70 magazines. The
censors, several of whom were
Women's Army Corps members, were
particularly on the lookout for publi-
cation of anything that would reveal
classified information, attract atten-
tion to the project, or furnish an
enemy agent or anyone else with
knowledge sufficient to determine the
nature of the project. ^^
While review of newspapers, peri-
odicals, and other publications pro-
vided some protection against damag-
ing revelations about the project, the
fact remained that once such informa-
tion appeared in print an element of
secrecy was lost. Much more effective
was a system that prevented publica-
tion of sensitive information. Under
the Office of Censorship's "Codes of
Wartime Practices for the American
Press and American Broadcasters,"
newspapers, periodicals, and radio
broadcasters voluntarily agreed to re-
frain from discussing certain specified
subjects and mentioning certain
terms. In February 1943, Vannevar
Bush proposed that the atomic energy
program be brought under this volun-
tary censorship. At first, both General
Strong, the Army intelligence chief,
and General Groves had serious res-
ervations about making the atomic
energy project subject to this censor-
ship arrangement, fearing that the re-
Ibid., pp. 6.10-6.11, DASA.
62 Ibid., pp. 6, 12-6. 15. and Bk. 5, Vol. 6, "Oper-
ation," p. 6.1 and App. Bl, DASA; Groves, Xow It
Can Be Told. p. 146.
278
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
suits "might be more detrimental
than otherwise." ^^
Finally, military leaders reluctantly
agreed to the voluntary press censor-
ship plan, persuaded primarily by the
insistence of Nathaniel R. Howard, as-
sistant director of the Office of Cen-
sorship and a former editor of the
Cleveland News, that this was the only
way to maintain press security of the
project. On 28 June 1943, Byron
Price, director of the Office of Cen-
sorship, sent out a special request to
all editors and broadcasters that they
extend the previously issued precau-
tion not to publish or broadcast any-
thing about "new or secret military
weapons . . . [or] experiments" to
include:
Production or utilization of atom
smashing, atomic energy, atomic fission,
atomic splitting, or any of their
equivalents.
The use for military purposes of
radium or radioactive materials, heavy
water, high voltage discharge equipment,
cyclotrons.
The following elements or any of their
compounds: polonium, uranium, ytterbi-
um, hafnium, protoactinium, radium, tho-
rium, deuterium.^'*
The aim of censorship was to pre-
vent all mention of the atomic pro-
gram in the American press; however,
on the advice of the Office of Censor-
^^ Strong's reaction to the proposal during a dis-
cussion with General Styer, who later reported the
discussion to Groves in Memo, Styer to Groves,
18 Feb 43, AG 313.3 (22 Aug 47), copy in CMH. See
also Memo, Bush to Styer, 13 Feb 43, Admin Files,
Gen Corresp, 000.73 (Censorship), MDR; Groves,
Now It Can Be Told, p. 146.
^* Price, sub: Note to Editors and Broadcasters —
Confidential — Not for PubHcation, 28 Jun 43, Incl to
Ltr, Howard to Groves, 28 Jun 43, Admin Files,
Gen Corresp, 000.73 (Censorship), MDR. See also
Groves, Now It Cmi Be Told, p. 146; MFC Min,
24 Jun 43, MDR.
ship, the District permitted a limited
amount of information about certain
aspects of the project to appear in
newspapers published in communities
near the Clinton and Hanford sites.
Office of Censorship officials pointed
out that complete suppression of in-
formation about activities at these lo-
cations would actually draw more at-
tention than a policy of judicious re-
lease of news of local interest, careful-
ly controlled so as not to reveal any
vital secrets. They cited as an exam-
ple the land acquisition at Hanford,
which required relocation of many
people and resulted in court proceed-
ings. Stories on these events in news-
papers of the Washington-Oregon
region would not violate essential se-
curity as long as they did not reveal
the purpose of the acquisition or
the interconnection of the Hanford
project with other parts of the atomic
program. General Groves assented to
this policy but took the added precau-
tion, suggested by Office of Censor-
ship officials, of having Manhattan
District representatives visit the edi-
tors or publishers of local newspapers
and operators of local radio stations
to request their cooperation in main-
taining the security of the project. ^^
At Los Alamos, security authorities
endeavored to keep all mention of the
site and its activities out of the press.
Total exclusion was more feasible at
the New Mexico installation because
of its military administration and geo-
graphic isolation from surrounding
communities. The policy was rein-
forced in late 1943 through the use of
^^ Ltr, Howard to Lt Col Whitney Ashbridge
(Asst, Opns Br, Constr Div, OCE), 1 Apr 43, Admin
Files, Gen Corresp, 000.73 (Censorship), MDR;
Groves, Now It Can Be Told, pp. 146-47.
SECURITY
279
regular mail censorship and other
measures to minimize the likelihood
that knowledge of the site would
come to the attention of the press. ^^
It was inevitable that a voluntary
censorship system would not be total-
ly effective, and on those occasions
when some reference to the project
or atomic energy occurred in the
press or on the radio, the District se-
curity office and the Office of Censor-
ship took immediate steps to limit its
circulation and to run down it origins.
A rash of censorship violations oc-
curred in late 1943. A columnist in
the Washington Post announced that
the Senate's Truman Committee was
about to investigate a "half-a-billion
dollar" War Department project in
the state of Washington that was "re-
ported to be one of the largest single
projects that's to be built from scratch
in the Nation's history." On the same
day the Post article appeared in the
Spokane Spokes man- Review, and soon
®® Ltr, Groves to Oppenheimer, 1 Nov 43; Ltr,
Capt Peer de Silva (Santa Fe Area Intel Ofl) to
Lansdale, sub: Censorship at Los Alamos, 8 Nov 43;
Memo, Lansdale to Groves, same sub, 10 Nov 43.
All in Admin Files, Gen Corresp, 311.7 (Santa Fe),
MDR. Groves, Xow It Can Be Told, p. 147.
thereafter the wire services picked up
the news item. Almost simultaneously,
several newspapers in Tennessee ran
a story on the state's Selective Service
that contained a passing reference by
the head of the service, Brig. Gen.
Thomas A. Frazier, to "the Clinton
Engineer Works in secret war produc-
tion of a weapon that possibly might
be the one to end the war." In both
instances, prompt action by the Office
of Censorship led to withdrawal of
the articles before they had received
wide circulation. Subsequent action
by the War Department resulted in
tracing down the sources of the leaks
and in implementing improved secu-
rity measures to prevent such oc-
currences in the future. ^"^
®^ Memo (source of first quotation). Groves to
Secy War, sub: Publicity Concerning DSM Proj,
15 Dec 43; Memo (source of second quotation).
Groves to Secy War, sub: Violation of Vital Scty
Provs by Brig Gen Thomas A. Frazier, 10 Jan 44,
and Incl; Rpt, Lansdale, sub: Publicity Concerning
Clinton Engr Works, 3 Jan 44. All in HB Files, Fldr
62, MDR. References to atomic energy and the
atomic project — some intentional, some accidental —
occurred many times in the public media during the
war. Examples of those investigated by Manhattan
District security officials may be found in HB Files,
Fldr 7, MDR, and in .Admin Files, Gen Corresp,
000.73 (Censorship), MDR.
CHAPTER XII
Foreign Intelligence Operations
The Manhattan Project's security
system involved the conduct of not
only domestic but also foreign intelli-
gence operations, for in terms of mili-
tary strategy gaining all possible in-
formation about atomic activities in
the Axis nations — especially Germa-
ny— was as important as safeguarding
state-of-the-art information on Ameri-
can nuclear research and develop-
ments. Hitler's recurring claims that
Germany had devised secret weapons,
as well as existing intelligence reports
on both German interest in the nucle-
ar research of French physicist Fred-
eric Joliot-Curie and German produc-
tion of heavy water at the Rjukan
(Norway) plant, convinced project ad-
ministrators of the likelihood that
Germany had under way a well-devel-
oped atomic energy program. In
order to carry out necessary counter-
measures against these presumed
enemy efforts to produce atomic
weapons. Allied military leaders in
1943 and 1944 intensified their for-
eign intelligence operations in the
European Theater of Operations
(EFO), giving a high priority to se-
curing more information about enemy
atomic activities. Manhattan Project
officials initiated much of this intelli-
gence effort, but eventually the War
Department General Staff, General
Marshall, Secretary Stimson, and a
number of other military leaders con-
tributed directly to its success.^
Organization of the ALSOS Mission
Upon receipt of any intelligence in-
formation on atomic developments in
enemy nations, the Army G-2, the
Office of Naval Intelligence, and the
Office of Strategic Services, as well as
other existing intelligence agencies,
dispatched a current intelligence
report to the Manhattan District for
the attention of General Groves. Until
the fall of 1943, this reporting system
had served to keep the Manhattan
commander and other project leaders
apprised of at least the accessible
areas of enemy atomic activities. But
in September, after the Fifth Army
had landed in southern Italy, Groves
perceived a unique opportunity for
the Army to exploit new sources of
information, especially about the
German atomic program, as U.S.
forces moved up the Italian penin-
sula. With the firm support of OSRD
Director Vannevar Bush, Groves met
with Maj. Gen. George V. Strong, the
Army G-2, to explore ways of achiev-
'MPC Min, 13 Aug 43, OCG Files. Gen Corresp,
MP Files, Fldr 23, lab A. MDR.
FOREIGN INIELLIGKNCE OPERATIONS
281
ing this objective. The proposed
course of action, with which Bush
coiK urred, was tlie eslabhshmeiU of a
special intelligence mission in Italy.
Shortly thereafter, Strong met with
General Marshall and suggested that
a small group of civilian scientists, as-
sisted by military personnel, be sent
to Italy to conduct inquiries into sci-
entific projects in that country, with
the hope that they might reveal some-
thing about German developments.
Marshall promptly approved the plan
and asked Groves to take responsibil-
ity for foreign intelligence related to
atomic energy. Apparently the Chief
of Staff was convinced that Manhattan
Project personnel and direction
would result in better coordination,
coverage, and less risk to security.^
Manhattan, OSRD, Army G-2, and
the Navy all furnished personnel for
the newly designated Alsos mission,^
which completed its organization by
late fall of 1943. As chief of Alsos
General Strong appointed Lt. Col.
Boris T. Pash, an intelligence officer
whose earlier competence in the Man-
hattan District's espionage investiga-
tions at the Radiation Laboratory had
impressed Groves. When the new
mission reached Italy in late Decem-
ber, it had fourteen members, includ-
2 Groves, Xow It Can Be Told, pp. 18.5 and 189-90;
Ms, Col Bruce W. Bidwell, "History of the Military
Intelligence Division, Department of the Army Gen-
eral Staff" (Washington, D.C.: Department of the
Army, n.d), Pt. 5, p. 6.25, copy in NARS.
^ Inadvertently, the letters of the code name
Alsos form the Greek word meaning "grove." Gen-
eral Groves's first reaction, when a scholarly col-
league informed him of the meaning of the word,
was to request the G-2 to adopt a more innocuous
name. After further consideration, however, he de-
cided against making the change because he feared
that to do so would create an even greater security
hazard because of the attention it would draw to the
mission. See Groves, Xow It Can Be Told, p. 191.
ing Pash, an administrative officer,
four scientists — two OSRD, one
Army, one Navy — four interpreters,
and four attached counterintelligence
agents. Opening the Alsos field
headquarters near Naples on the sev-
enteenth, Pash established liaison
with the Fifth Army Intelligence
Section and representatives of Mar-
shal Pietro Badoglio's Italian civil
government.
ALSOS Operations in Italy
Alsos teams in the early weeks of
1944 interviewed Italian scientists and
examined captured technical docu-
ments in Naples, Taranto, and Brindi-
si, and elsewhere in the zone of occu-
pation.* They soon realized that little
data on scientific developments in
Germany and northern Italy was avail-
able in southern Italy, but discovered
that Rome held more promise. To
gain access to the Italian capital,
Alsos officials prepared two alternate
plans: the first, have Alsos personnel
enter Rome with the Fifth Army as
soon as the city fell; the second, bring
Italian scientists out of Rome and
northern Italy even before this oc-
curred. Neither plan succeeded, how-
ever, because of the unexpectedly
slow advance of the Allies. Alsos
teams also had little success securing
information from Italian scientists
behind enemv lines, and bv March
* Except as otherwise indicated, section based on
Ms, Bidwell, "Hist Mil Intel Div, " Pt. 5, pp. 6.25-
6.26, NARS; MDH, Bk. 1. Vol. 14, "Intelligence and
Security," Foreign Intel Supp. 1, pp. 1.1-3.6, DASA;
Groves, Now It Can Be Told, pp. 190-94; Lincoln R.
Thiesmeyer and John E. Burchard, Combat Scientists,
Science in World War II (Boston: Little, Brown and
Co , 1947), pp. 164-65; Boris T. Pash, The ALSOS
Mission (New York: Award House, 1969).
282
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
most team members had returned to
the United States.
From the information secured in
southern Italy, Alsos scientists con-
cluded that the Germans were carry-
ing on little, if any, experimental ac-
tivity with atomic energy. From their
reports Groves estimated that the
German program was at about the
same stage the American program
had been when the Army assumed re-
sponsibility for its further develop-
ment. But the evidence was not suffi-
cient. For this reason and with an eye
to the coming invasion of Western
Europe, Alsos scientists recommend-
ed that measures be undertaken to
secure knowledge of scientific de-
velopments in new theaters of
operation.^
When Colonel Pash, who was in
London preparing the Alsos mission
to accompany the invasion of Western
Europe, received word that Allied
troops had entered Rome on 4 June,
he immediately left for Italy. Arriving
in Rome on the fifth, he helped to
identify a number of important scien-
tific intelligence objectives, including
questioning of the members of the
physics laboratory at the University of
Rome. A reconstituted Alsos group
for Italy carried out this and other
tasks. Two Manhattan officers, Maj.
R. C. Ham, who took charge of the
group when Pash returned to Eng-
land, and Maj. Robert R. Furman, a
special projects officer from Groves's
Washington staff, played an important
part in its work. The results of the
group's investigations tended to reaf-
firm those of the earlier Alsos mis-
sion that German atomic activities
were on a very limited scale.®
Manhattan 's Special Intelligence
Activities, 1944
Anticipating that Alsos would con-
tinue its operations in Western
Europe, Groves established a liaison
office in London. In December 1943
he sent Major Furman to make pre-
liminary arrangements with the Brit-
ish government, and in January 1944
he assigned Capt. Horace K. Calvert,
chief of the Manhattan District's secu-
rity program, to head the new office.
Calvert quickly established working
relations with G-2, European Theater
of Operations, U.S. Army (ETOUSA),
with the American embassy, and with
the British atomic energy organiza-
tion, and also assembled a small staff
of researchers and investigators.
In the early months of 1944, Cal-
vert's group concentrated on collect-
ing further background data on
German atomic activities, seeking es-
pecially to obtain more information
on the number of atomic scientists
and technicians at work, on the loca-
tion of physics laboratories and indus-
trial facilities engaged in operations
related to atomic energy, and on the
mining and stockpiling of ores con-
taining fissionable materials (uranium
and thorium). For example, by perus-
ing German physics journals and
questioning refugee European scien-
tists, they learned the names and
likely whereabouts of the most impor-
tant German atomic scientists; and by
periodic aerial surveillance of the
* Groves, Xow It Can Be Told, p. 194; MPC Min,
28 Jul 44 and 24 Feb 45, MDR.
« Groves, Now It Can Be Told. pp. 208-10; Pash,
ALSOS Mission, pp. 30-32.
FOREIGN INTELLIGENCE OPERA! IONS
283
mines at Joachimsthal (Jachymov),
Czechoslovakia, they maintained a
check on the production of uranium
ore, an indicator of the extent of
German atomic activities. Thus by the
time a revived Alsos mission pre-
pared to follow the Allied invasion
that summer, the London group had
ready a promising list of matters to
be investigated.'
At the same time, other representa-
tives of the American program were
in England to advise the Allied mili-
tary leaders on development of de-
fense measures against atomic weap-
ons. There had been a growing con-
viction among a number of the ad-
ministrative and scientific leaders of
the Manhattan Project that the Ger-
mans might employ some type of
atomic weapon, cither in attack upon
Great Britain or in defense against an
Allied landing in Western Europe.
Most American scientists believed that
if the Germans did attempt to employ
nuclear materials on the battlefield,
they would use radioactive fission
products in the form of some kind of
poison gas. The Germans, the Ameri-
can scientists reasoned, were most
likely to have concentrated their ef-
forts on development of a plutonium-
producing pile, because this was the
method that promised to produce the
most active material with the least in-
vestment in plants and fissionable ma-
terials. The Americans knew from
their own experience that pile oper-
ation produced not only plutonium
but also a large amount of radioactive
by-products. If the Germans had suc-
ceeded in developing and operating a
pile — and no one was certain they had
not — they would have built up a con-
siderable supply of these radioactive
materials.^
General Groves, very much aware
of the possibility of radioactive war-
fare, took specific measures to inform
American and British military leaders
of how to deal with the threat. In late
1943, he directed that a project team
prepare an instruction manual on the
use of radioactive materials in war-
fare, for distribution to the military
leaders, and in December, with the
concurrence of General Marshall, he
authorized a briefing of four officers
from the ETOUSA staff temporarily
on duty in the United States. Maj.
Arthur V. Peterson, a chemical engi-
neer long associated with the pile
program, conducted the briefing at
the Metallurgical Laboratory, includ-
ing information on probable uses of
the materials, their effects and how
they could be treated, and possible
defense measures. He also instructed
the four officers to inform key officers
in ETOUSA, suggesting they report
any unusual or unexplained symp-
toms observed by medical personnel
and fogging of films detected by
signal or air personnel. Headquarters,
ETOUSA, took the recommended ac-
tions promptly, but in the early
months of 1944 found no evidence of
'Groves, \ow It Can Be Told. pp. 194-98.
8MPC Mill, 14 Dec 43, MDR; MPC Rpt. 4 Feb 44.
OCG Files, Gen Corresp, MP Files, Fldr 25, Tab C,
MDR; Groves, \ow It Can Be Told, pp. 199-200. See
also the several reports, memorandums, and other
documents pertaining to how the Germans might
use radioactive materials for military purposes in
Admin Files, (ien Corresp, 319.1, MDR. Because of
this threat, the Manhattan District during the
summer of 1943 supplied its area offices in Boston,
Chicago, New York, and San Francisco, as well as
Groves's headquarters in Washington, D.C., with
Geiger counters as a means to detect the presence
of radioactivity in the event of an air raid.
284
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
the use of radioactive materials by the
Germans.^
As time for the AUied invasion of
Western Europe approached, General
Groves turned his attention to the
possibility that the Germans would
employ radioactive warfare to disrupt
the landings on the Continent. He
consulted with a number of Manhat-
tan Project leaders but did not get
any information or helpful advice,
except from James B. Conant. He de-
cided, nevertheless, to warn General
Dwight D. Eisenhower, Commanding
General, Supreme Headquarters,
Allied Expeditionary Force (SHAEF),
directly of the danger of radioactive
poisoning. With approval from Gen-
eral Marshall, he sent Major Peterson
to England to brief Eisenhower and
his chief of staff, Lt. Gen. Walter
Bedell Smith, and other members of
the SHAEF and ETOUSA staffs. Ei-
senhower's reaction was restrained.
"Since the Combined Chiefs of Staff
have not brought this information of-
ficially to my notice," he wrote to
Marshall, "I have assumed that they
consider, on the present available in-
telligence, that the enemy will not im-
plement this project. Owing to the
importance of maintaining secrecy to
avoid a possible scare, I have passed
this information to a very limited
number of persons; moreover, I have
not taken those precautionary steps
which would be necessary adequately
^ Memo, Maj Peterson to Groves, sub: Special In-
struments, 14 )un 43; Memo, Nichols to Groves,
30 Oct 43; Manual on Use of Radioactive Materials
in Warfare, no author. All in Admin Files, Gen Cor-
resp, 319.1, MDR. Memo, Groves to Chief of Staff,
23 Jul 43, Admin Files, Gen Corresp, 020 (Chief of
Staff), MDR. MDH, Bk. 1, Vol. 14, Foreign Intel
Supp. 2 (by Lt Col Arthur V. Peterson), pp. 4-6,
DASA. Groves. Xow It Can Be Told. p. 200.
to counter enemy action of this
nature." ^°
Nevertheless, Eisenhower did take
several measures to alert his com-
mand. Briefings on radioactive war-
fare were held for the chiefs of the
American Navy, Army Air Forces, and
logistical commands in Europe, as
well as for a limited number of their
staff members. He also informed Lt.
Gen. Sir Hastings L. Ismay, Chief of
Staff to Prime Minister Churchill. At
the request of the Supreme Head-
quarters, ETOUSA prepared a plan of
operation for the American forces
under the code name Peppermint,
which provided that detection equip-
ment be readied for quick dispatch to
the Continent, if needed, and made
arrangements for obtaining more
equipment and the technical person-
nel required to use it. The plan also
called for briefing of specified staff
officers and again requested reports
of unexplained fogging of photo-
graphic film and certain types of clini-
cal symptoms and medical cases. The
British subsequently devised a similar
plan. A short time before the invasion
of Normandy, Headquarters, Chemi-
cal Warfare Service, ETOUSA, car-
ried out rehearsals of Operation Pep-
permint to test the plan and equip-
ment. Aerial and ground surveys
checked for presence of radioactivity
in bombed areas along the coast of
England and at troop- and supply-
concentration centers. Survey results
indicated that the Germans had not
used radioactive materials, so Oper-
'° Qiiotation from Ltr, Eisenhower to Marshall,
1 1 May 44. See also Memo, Groves to Chief of
Staff, 22 Mar 44. Both in OCG Files, Gen Corresp,
Groves Files, Fldr 18, Tab A, MDR.
FOREIGN INTELLIGENCE OPERATIONS
285
ation Peppermint never went into
effect. ^^
ALSOS Operations in Western Europe,
194^-1945
In early 1944, while planning its
special intelligence objectives, the
Manhattan Project also took the initia-
tive to reestablish an even larger
Alsos mission in Western Europe.
Groves and Bush in March requested
the newly assigned Army G-2, Maj.
Gen. Clayton L. Bissell, to form a
new Alsos group along the same
lines as the earlier Italian mission.
Bissell agreed a new high-level scien-
tific organization was needed to ex-
ploit intelligence opportunities in the
wake of the invasion armies, but there
was indecision in the War Department
General Staff as to what kind of orga-
nization should be used. Concerned
by the delay. Groves personally inter-
vened with the G-2. As a result, the
Deputy Chief of Staff, Lt. Gen. Joseph
T. McNarney, approved a reorganiza-
tion plan on 4 April, with Groves and
Bush selecting the military and civil-
ian scientific personnel and General
Bissell the intelligence and adminis-
trative staff. ^2
The new Alsos mission had its own
advisory committee, a scientific direc-
tor, and an enlarged staff of military
' ' Ltr, Eisenhower to Marshall, 1 1 May 44; Admin
Memo 58, Office of Chief Surg, ETOUSA, sub: Rpt
of Epidemic Disease, 3 Mav 44, Both in OCG Files,
Gen Corresp, Groves Files, Fldr 18, Tab A, MDR.
Admin Memo 60, Office of Chief Surg, ETOUSA,
sub: Rpt on Fogging or Blackening of Photographs
or X-rav Film, 3 May 44, reprinted in Groves, Sow It
Can Re Told, pp. 203-04 MDH, Bk. 1, Vol. 14,
Supp. 2, pp. 6-10, DASA.
'2 Groves, \ow It Can Be Told. p. 207; Ms, Bid-
well, "Hist Mil Intel Div, " Pt. 5, pp. 6.26-6.27,
NARS; Groves Diary, 2. 6, 10 Mar and 3 Apr 44,
LRG.
and civilian personnel. The advisory
committee was comprised of the di-
rectors of Naval Intelligence and the
OSRD, the commanding general of
the Army Service Forces, and the
Army G-2, each of whom appointed a
deputy to carry out the actual work of
supervising the mission. The commit-
tee members and their deputies
shared responsibility with the scientif-
ic director, Samuel A. Goudsmit, a
physicist from the University of Michi-
gan, who had been on leave to work
at MIT's Radiation Laboratory.
Born in the Netherlands and edu-
cated in European universities,
Goudsmit had a first-rate scientific
reputation and a command of several
languages. As a student and later a
frequent visitor to many of the scien-
tific centers of Europe, he had
become personally acquainted with
many of the leading physicists on the
Continent. That he had not been em-
ployed on the Manhattan Project was
an advantage, because, in the event of
his capture by the enemy, he could
not be forced to reveal secret infor-
mation about the atomic program. ^^
'^Except as otherwise indicated, account of
second phase of the Alsos mission based on MDH,
Bk. 1, Vol. 14, Supp. 1, pp. 2.2-2.4 and 4.1-4.50,
DASA; Ms, Bidwell, "Hist Mil Intel Div," Pt. 5, pp.
6.26-6.41, NARS; Groves, \ow It Can Be Told, pp.
207-49; Thiesmeyer and Burchard, Combat Scientists.
pp. 165-79; Pash, ALSOS Mission, pp. 52-248;
Samuel A. Goudsmit, ALSOS (New York: Henry
Schuman, 1947), pp. 14-127. Data on the German
atomic program in World War II drawn from David
Irving, The I'lnts House (London: William Kimber,
1967), subsequently published in an American edi-
tion under the title The German Atomic Bomb: The His-
tory of Xuclear Research m Xazi Germany (New York:
Simon and Schuster, 1968); Albert Speer, Inside the
Third Reich — Memoirs, trans, from the German by
Richard and Clara Winston (New York: Macmillan
Co., 1969), pp. 269-72; Michel Bar-Zohar, The Hunt
of German Scientuts. trans, by Len Ortzen from the
French La Chasse aia Sai'anls allemands (New York:
Hawthorn Books, 1967).
286
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
With assistance from the OSRD,
Goudsmit expanded the civihan scien-
tific staff until, by the end of August,
it included more than thirty scientists.
Colonel Pash, after establishing a
London office, recruited additional
military personnel required for the in-
creased administrative and operation-
al duties of a larger mission. For pur-
poses of military administration and
supply, Alsos was attached to the
Office of the Assistant Chief of Staff,
G-2, ETC. In spite of direct support
from Eisenhower's headquarters, Pash
experienced some difficulties in se-
curing adequate counterintelligence
personnel and in making other orga-
nizational arrangements. Part of the
problem was that Alsos's high securi-
ty classification limited knowledge of
its purpose and activities to only a
few high-ranking Allied officers.
While the directive establishing the
new Alsos stated its mission in very
broad terms (it was to secure "all
available intelligence on enemy scien-
tific research and development, par-
ticularly with reference to military
application"), both its military and
scientific leaders viewed its primary
purpose to be uncovering and analyz-
ing German atomic activities. Further-
more, the limited size of its staff
(there were never more than slightly
over one hundred military and civilian
personnel) precluded any extensive
investigations outside the nuclear
physics field, although it did give
some attention to bacteriological war-
fare, aeronautical research, proximity
fuses, guided missiles, and similar
developments.
The first Alsos operations in
France were largely unproductive in-
vestigations at the University of
Rennes and at L'Arcouest, where
Joliot-Curie's summer home was lo-
cated. Joliot was not in L'Arcouest,
but Colonel Pash, Major Calvert, and
two counterintelligence agents found
him in his laboratory at the College
dc France when they accompanied the
2d French Armored Division as it led
the forces liberating Paris in late
August 1944. After receiving news of
the French physicist's whereabouts,
the Alsos scientific director proceed-
ed to Paris to interview Joliot. Goud-
smit subsequently learned that the
German scientists had used Joliot's
cyclotron and other laboratory facili-
ties; however, he failed to obtain
enough data during the interview to
determine the extent of enemy
progress in atomic matters.^*
Alsos investigative efforts became
much more productive following relo-
cation of its headquarters from
London to Paris in mid-September
1944. Alsos teams established con-
tact with officials of the Belgian urani-
um mining firm. Union Miniere du
Haut Katanga, and obtained informa-
tion on the shipments of uranium
products that had gone into Germa-
ny. They also learned that there were
still uranium materials in Belgium and
that other stock had been shipped to
France. Groves undertook immediate
measures to bring these materials
under control of the Manhattan
Project agency that had been formed
for that purpose, the Combined De-
velopment Trust, and dispatched
Major Furman, who had taken part in
the Italian Alsos mission, to locate all
uranium stocks in areas under Allied
control.
'"•Key provisions of the Alsos directive are
quoted in Ms, Bidwell, "Hist Mil Intel Div," Pt. 5, p.
6.29, NARS.
FOREIGN INTELLIGENCE OPERATIONS
287
Soon Alsos teams had tracked
down and secured 68 tons of uranium
materials in Belgium and about 30
tons at Toulouse, France. Groves di-
rected prompt shipment of these
stocks to England and thence later to
the United States for safekeeping. A
subsequent Alsos mission located
and eventually secured substantial
uranium stock in storage near Stass-
furt in central Prussia. ^^
As Allied armies moved eastward
toward the Rhine in the fall of 1944,
Alsos teams gained considerable
knowledge about the probable loca-
tions of German atomic activities. Re-
search had begun at the Kaiser Wil-
helm Institute in Berlin but had been
moved near the small towns of He-
chingen and Bissingen in Wuerttem-
berg, located in the Black Forest
region of southwest Germany, when
heavy bombing of the German capital
started in 1943. Aerial photo surveil-
lance instituted by the Manhattan in-
telligence office in England that
summer had concluded new construc-
tion there was not an atomic plant,
but other Allied intelligence sources
indicated the Germans had some kind
of atomic operations in progress in
the area. Questioning of German pris-
oners, too, had cast suspicion on the
town of Oranienburg, 18 miles north
of Berlin, as a possible location of a
processing plant for thorium and
other ores related to atomic energy
research.
Finally, in late November 1944,
Alsos representatives were able to
'^On the Combined Development Trust see Ch.
XIII. For further details on the seizure and handling
of captured stock see Ms, "Diplomatic Hist of Man-
hattan Proj," pp. 31-32, HB Files, Fldr 111, MDR,
and MDH, Bk. 1, Vol. 14, Supp. 1, pp. 4.36-4.37,
DASA.
question German atomic scientists at
the University of Strasbourg. The 6th
Army Group's special unit, the Stras-
bourg T-Force, and Alsos teams en-
tered the city with the first Allied ele-
ments. From the scientists and the
documents they found there, they
learned that Germany's wartime
atomic research program had begun
in early 1942. It had not, however,
gotten beyond the research and de-
velopment stage. When the Nazi lead-
ers had learned of the possibility of
producing atomic weapons, they had
offered to provide the atomic pro-
gram with more money. But the
German scientists had turned down
the funds as premature. By 1944, they
still had not discovered an effective
way to separate U-235 from ordinary
uranium, although they had succeed-
ed in manufacturing uranium metal
for use in the piles they had built.
They had not, however, attained a
chain reaction in these piles. ^®
While the Strasbourg data indicated
strongly that the Nazis had not
achieved significant progress toward
the fabrication of atomic weapons, it
was not sufficient to convince General
Groves, Allied military leaders, and
Allied scientists. Some argued, for ex-
ample, that the Strasbourg evidence
might have been planted deliberately.
In fact, some Alsos military members
advocated bombing raids on suspect-
ed German atomic sites in the Black
Forest region, but Alsos scientists
dissuaded them from this course.
The latter group, however, raised
no objections to Groves's request for
'^ For a description of the efforts of the Nazi gov-
ernment to provide support for the German atomic
program see Speer, Inside the Third Reich, pp. 269-
71, and Stimson Diarv, 13 Dec 44, HLS.
288
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
bombing of installations at Oranien-
burg. The town was in the projected
Russian occupation zone and there-
fore could not be investigated by
Alsos. Groves dispatched an officer
from his staff to explain the mission
to General Carl A. Spaatz, command-
er of the United States Army Strategic
Air Forces in Europe, who on 15
March 1945 ordered Eighth Air Force
bombers to drop almost 1,300 tons of
bombs and incendiaries on the facili-
ties at Oranienburg. ^ "^
Preparing to follow the Allied
armies into Germany in early 1945,
Alsos corrected certain organization-
al weaknesses revealed during the
Strasbourg operations. Full-time as-
signment of German-speaking scien-
tists helped ensure their prompt avail-
ability when they were most needed.
Establishment of close liaison with
SHAEF and ETOUSA headquarters,
in Paris, and with the 21st, 12th, and
6th Army Groups headquarters en-
abled Colonel Pash to keep more
abreast of front-line military develop-
ments, and hence in a better position
to exploit intelligence opportunities.
The reorganized Alsos units dem-
onstrated their greater effectiveness
as they followed the Allied armies
toward the Rhine in February 1945.
Establishing another advance base at
Aachen, they investigated scientific in-
telligence objectives in the university
cities of Cologne and Bonn, at metal-
making plants in Frankfurt, and, a
^' Wesley Frank Craven and James Lea Gate, eds.,
Europe: Argument to V-E Day, January 19-4-4 to May
1945, The Army Air Forces in World War II, Vol. 3
(Chicago: University of Chicago Press, 1951), pp. 53
and 753. The account of the bombing of Oranien-
burg on 15 Mar 45 indicates that the town was a
railroad center and site of aircraft plants, but does
not mention atomic facilities. See also Groves, Now
It Can Be Told, pp. 230-31.
short time later, at the IG Farben In-
dustries plants in Ludwigshafen. As
Alsos scientists had anticipated, none
of these investigations turned up sig-
nificant information on German
atomic developments. But they
helped to prepare the way for
effective exploitation of the impor-
tant atomic objectives in southwest
Germany.
The first of these to become acces-
sible in the spring of 1945 was Hei-
delberg. There an Alsos team cap-
tured several leading German atomic
scientists; nuclear equipment, includ-
ing a cyclotron; and many valuable
documents. Data uncovered in Hei-
delberg also further substantiated ear-
Her evidence that most of the other
important German atomic scientists
and their research installations were
in the region south and east of Stutt-
gart. But Alsos penetration of this
area posed a problem because of the
decision by the Allied leaders in early
1945 that it fell within the French
zone of operations.
In April 1945, while American
atomic leaders endeavored to work
out a solution to the French zone
problem, Alsos teams operating out
of advanced base headquarters at
Heidelberg and Aachen investigated a
variety of atomic targets at other
points in west and southwest Ger-
many. Northeast of Frankfurt, at the
town of Stadtilm in Thuringia, where
the German government had relo-
cated a part of the physics branch of
the Kaiser Wilhelm Institute, Alsos
found many technical documents relat-
ing to the atomic program, parts for a
low-temperature pile, heavy water
equipment, and 8 tons of uranium
oxide. The Gestapo had evacuated
FOREIGN INTELLIGENCE OPERATIONS
289
the most important laboratory staff
members, but Alsos scientists inter-
viewed a number of lesser status who
had remained in Stadtilm. At the uni-
versity town of Goettingen, located
south of the city of Hannover, and at
the adjoining village of Lindau, an-
other Alsos team found several scien-
tists and technicians who had consid-
erable knowledge of German wartime
scientific programs. Most notable
among this group was the chief of the
planning board of the Reichsforschungs-
rat (National Research Council), the
central German agency for scientific
research for military purposes. From
Goettingen, an Alsos team pushed
north to Celle, located 22 miles
northeast of Hannover, where, ac-
cording to information obtained at
Stadtilm, the Germans had installed
an experimental centrifuge for sep-
arating uranium isotopes. On the
seventeenth, the team found the cen-
trifuge in a laboratory located in a
spinning mill guarded by British
troops.
These various findings by Alsos
teams appeared further to confirm
that the German wartime atomic
energy program was of relatively
modest character and had made little
progress toward producing atomic
weapons. But the American atomic
leaders could not be fully satisfied
that this was the case until Alsos
teams had investigated the reported
atomic facilities relocated by the Ger-
mans from the Berlin area to the
Black Forest region in Wuerttemberg
and had captured the principal
German atomic scientists believed to
be residing in that area. They also
agreed that, for reasons of security,
American troops must be the first to
occupy and inspect these facilities.
Their first hope was that zone bound-
aries in southwest Germany could be
adjusted to exclude the atomic facili-
ties from the French zone. But by
early April, the State Department's in-
sistence upon having full knowledge
of the reasons for making readjust-
ments— a request incompatible with
Manhattan's security requirements —
convinced Groves that other means
must be found to assure American
penetration ahead of the French in
the crucial Wuerttemberg region. On
the fifth. Groves, Marshall, and Stim-
son agreed that the Manhattan com-
mander should implement his own
proposal that Alsos teams, accompa-
nied by American troops, move into
the Wuerttemberg region, question
German atomic scientists found there,
remove appropriate records, and de-
stroy the atomic installations.^®
Marshall directed Groves to coordi-
nate with the Operations Division of
the War Department and SHAEF in
developing a plan for what came to
be known as Operation Harbor-
age.^^ Groves sent his special assist-
ant for security affairs, Lt. Col. John
Lansdale, Jr., to Europe to assist the
SHAEF planners. They first consid-
ered carrying out a combined para-
chute and ground operation, but by
20 April the rapidly shifting tactical
situation had eliminated the need for
the air phase of the operation. In-
stead, SHAEF ordered Colonel Pash
to undertake a conventional intelli-
gence operation, with the objective of
seizing appropriate persons, docu-
ments, buildings, and materials. For
isstimson Diary. 4-5 Apr 45, HLS.
1^ General Groves gives a detailed account of his
role in the planning of Operation Harborage in
Xow II Can Be Told. pp. 233-36.
290
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
this purpose, the Supreme Headquar-
ters created a new special task force,
designated T-Force. Comprised of
fourteen American and seven British
officers, five scientists, eight counter-
intelHgence agents, and fifteen enhst-
ed men, T-Force was attached to the
6th Army Group and reinforced by
the 1269th Engineer Combat Battal-
ion (less Company B), all under the
command of Pash. When French
forces appeared to be on the verge of
moving in to the Wuerttemberg area
in late April, SHAEF gave Pash per-
mission to launch Operation Harbor-
age. On the twenty-second, Pash, ac-
companied by Brig. Gen. Eugene L.
Harrison, G-2 of the 6th Army
Group, led T-Force across a bridge-
head at Horb, on the Neckar River,
about 56 miles east of Strasbourg.
They moved south and east 20 miles
to Haigerloch, which they seized on
the twenty-third. In the next two
days, T-Force elements also occupied
Hechingen, 9 miles east of Haiger-
loch, and Bissingen, a few miles
southwest, and Tailfingen, a few miles
southeast of Hechingen, thus com-
pleting a sweep of the Black Forest
villages suspected of having atomic
installations or personnel.
What the Alsos scientists found in
these communities finally and defi-
nitely confirmed the limitations of the
wartime German atomic program. "It
was so obvious," Samuel Goudsmit
later recalled,
that the whole German uranium set up
was on a ludicrously small scale. Here [at
Hechingen] was the central group of lab-
oratories, and all it amounted to was a
little underground cave, a wing of a small
textile factory, a few rooms in an old
brewery. To be sure, the laboratories
were well-equipped, but compared to
what we were doing in the United States
it was still small-time stuff. Sometimes we
wondered if our government had not
spent more money on our intelligence
mission than the Germans had spent on
their whole project. ^°
Besides laboratories and equip-
ment, Alsos teams found concealed
supplies of heavy water, 1.5 tons of
metallic uranium cubes, 10 tons of
carbon, and miscellaneous other nu-
clear materials. They also located im-
portant scientific and technical
records, but most significant were the
German scientists they took into cus-
tody. These included Otto Hahn,
who, with Fritz Strassmann, had con-
ducted in 1938 the experiments that
resulted in the fissioning of uranium
by neutrons, subsequently confirmed
by Lise Meitner and Otto R. Frisch.
Not all of the known remaining
leaders of German atomic science
were found in the Black Forest
region, but information uncovered
there led to capture in May 1945 of
those still at large by other Alsos
teams operating in Bavaria. These in-
cluded the world-famous Werner Hei-
senberg, a Nobel Prize winner, and
Walther Gerlach and Kurt Diebner,
two of the chief administrative offi-
cials in the German atomic program.
After preliminary interviews by Alsos
field teams. Allied authorities re-
moved the captured scientists by easy
stages to rear areas — first to Ver-
sailles, then Belgium, and finally in
July to England — where they were
subjected to further intensive interro-
gation. Although the enemy scientists
were under British administrative
control during their extended intern-
ment in England, representatives of
20 Goudsmit, .4L50S, pp. 107-08.
FOREIGN INTELLIGENCE OPERATIONS
291
the Manhattan Project exercised a
consultative role in determining their
intelligence exploitation and ultimate
disposal. Unwilling to see the German
scientists come under Russian con-
trol, both British and American
atomic authorities insisted on detain-
ing them in England until there was a
reasonable assurance that when they
returned to Germany they would
reside and work in either the British
or American occupation zone, a con-
dition that was not finally met until
the end of 1945.21
Alsos continued operating in the
wake of the Allied armies in the
summer and fall of 1945, seeking ad-
ditional evidence of German atomic
developments. Penetrations to Ham-
burg, Berlin, Vienna, and elsewhere
resulted in the capture of a few more
scientists but provided little addition-
al new information or facilities. When
the Alsos mission finally disbanded
in November, it had, as General
Groves later assessed its results,
"only confirmed what we already
knew and it was quite clear that there
was nothing in Europe of further in-
terest to us." 22
When the interned German scien-
tists learned that the United States
had dropped atomic bombs on Japan
in August 1945, they endeavored to
explain why Germany failed to devel-
op an atomic weapon. Their explan-
tion coincided generally with the
picture that Alsos teams had pieced
together from the evidence they had
gathered in Germany. Although
German scientists had begun research
on the practical application of atomic
energy in 1939, they soon had come
to the conclusion that, because of lim-
ited resources and facilities available
to them, production of atomic explo-
sives was not feasible and had con-
centrated on developing an atomic
engine as an alternate source of
power. They had persisted along
these limited lines even after Albert
Speer, the Nazi Minister of Arma-
ments, had offered in 1942 to in-
crease financial support for the
atomic program. Speer later recalled
that Heisenberg and other German
atomic scientists had given him the
distinct "impression that the atom
bomb could no longer have any bear-
ing on the course of the war."^^
Administrative problems, too, had
plagued the program; a partial con-
solidation in 1942 had not ended the
fragmentation and duplication that had
developed when atomic research had
been divided among three different
and competing governmental agen-
cies. In the estimate of the historian
of the German program, the com-
bined effect of these negative factors
was that "after the middle of 1942,
Germany virtually marked time until
the end of the war, gaining in those
three years knowledge that could
have been won in as many months
had the will been there. . . . Ger-
many's nuclear scientists failed to win
the confidence of their government,
and were left stranded on the shores
of the atomic age." 2"*
^' On the internment and treatment of the
German scientists in England see Groves, Xow It
Can Be Told. pp. 333-40.
"Ibid., p. 248.
"Speer, Inside the Third Retch, p. 27L
"Irving, The I'mis House, p. 274. See also Alan D.
Beyerchen, Saentisls Under Hitler: Politics and the Phys-
ics Community m the Third Reich (New Haven: Yale
University Press, 1977), pp. 188-89, 193-97, 201-
02.
CHAPTER XIII
The Raw Materials Program
From the very beginning of the
atomic energy project, one of the
most important activities was procure-
ment of basic raw materials, many of
them never before in great demand.
The Office of Scientific Research and
Development had begun acquiring a
number of these materials through
the planning board of its S-1 Section
and through Stone and Webster, and
in mid- 1942, when the project was
placed under the direction of the
Army, the Manhattan District as-
sumed responsibility for the ongoing
materials program. With the long-
range objective of ensuring America's
control of the world's more signifi-
cant deposits of uranium and thori-
um,^ the District almost immediately
became involved in acquisition efforts
at an international level. This, project
leaders felt, was critical to national se-
curity and would prevent unfriendly
nations from securing these supplies.
'When thorium 232 captures a slow neutron, it
converts into thorium 233. The thorium then disin-
tegrates quickly into protoactinium 233, which then
decomposes, but more slowlv, into uranium 233.
Uranium 233 is fissionable by slow neutrons and
thus potentially a material for sustaining a chain
reaction. Thorium, like uranium, occurs widely in the
earth's crust, but similarly not often in sufficient
concentration to provide economically workable de-
posits. Before World War II, it was most commonly
used in the manufacture of gas mantles.
Geographic Search and Field Exploration
In October 1942, shortly after Gen-
eral Groves became executive officer
of the Manhattan Project, Deputy Dis-
trict Engineer Nichols and Union
Miniere Director Edgar Sengier suc-
cessfully completed negotiations for
the District's acquisition of the com-
pany's remaining stocks of mined ura-
nium ore, stored on Staten Island and
in the Congo, ^ thus assuring the
atomic program a sufficient supply to
meet its wartime requirements. Yet in
the ensuing months, project leaders
gradually came to realize that raw ma-
terials procurement could not be lim-
ited to meeting only the immediate
wartime demands. First, by their deci-
sion to build and operate several
large production plants, they had es-
tablished a requirement for a continu-
ing supply of uranium, not only for
the wartime weapons program but
also for postwar armaments and de-
velopment of atomic energy as a great
new source of power. Second, they
became increasingly aware of impor-
tant strategic considerations as, be-
ginning in 1943, the United States ne-
gotiated interchange agreements with
'See Ch. W for details on acquisition of Belgian
THE RAW MATERIALS PROGRAM
293
Great Britain. Both the American and
British leaders concluded that the
best future interest of the two coun-
tries would be served by a joint effort
to seek out and gain control over as
much of the world's uranium and tho-
rium deposits as possible; this policy,
they reasoned, would ensure their
governments ready access to major
new resources of inestimable value
and would keep these resources out
of the hands of their potential en-
emies. Furthermore, project leaders
perceived that, strictly from the view-
point of national interest, it would be
better for the United States to con-
serve its own apparently limited do-
mestic resources and use whatever
raw materials it could acquire from
other countries instead.^
Although occupied with a myriad of
other matters relating to plant con-
struction in early 1943, General
Groves took time to develop an orga-
nization for carrying out the project's
long-range raw materials objectives.
He presented his ideas to the Military
Policy Committee at its 5 February
meeting, emphasizing that he wanted
to have "a competent mining expert
examine the possibility of developing
in the United States a suitable source
of supply of the crucial ores." By late
March, the Manhattan commander
was discussing the possibility of en-
gaging the Union Carbide and
Carbon Corporation, already under
contract to operate the gaseous diffu-
sion plant at Clinton, to undertake a
3MPC Rpt, 21 Aug 43, Fidr 25, Tab E; MPC Mm,
24 Jun 43, Fldr 23, Tab A. Both in OCG Files, Gen
Corresp, MP Files, MDR. Groves, Xow It Can Be
Told, p. 180. Ms (unsigned), "Atomic Bombs," Apr
45, HB Files, Fldr 15, MDR.
broad program of ore exploration for
the Manhattan Project.*
Groves's selection of Union Car-
bide rather than some other compa-
ny, or the Manhattan District, or an-
other government agency was due to
a number of considerations, with the
security aspect of primary importance.
Because Union Carbide made regular
foreign purchases of many uranium
minerals, he felt it was highly unlikely
that the chemical firm's ore explora-
tion activities for the District would
attract any undue attention. Also es-
pecially attractive was the fact that the
company, because of its long experi-
ence in mineral surveys and explora-
tions, currently had an organized —
although inactive — subsidiary, the
Union Mines Development Corpora-
tion, to administer the ore program.
Following negotiations, Union Car-
bide agreed to activate Union Mines,
and on 24 May, Union Mines Presi-
dent J. R. Van Fleet accepted a letter
contract. Under terms of this con-
tract. Union Mines would carry out a
worldwide search for new sources of
uranium, evaluate its findings, and
make recommendations as to the best
way for the United States to explore
them; the government would pay all
costs; and Union Mines would work
without a fixed fee or profit.
For reasons of security, and to
avoid duplication of administrative
overhead operation. Union Mines lo-
cated its headquarters in the New
York City office building already oc-
cupied by other elements of Union
Carbide. Security also was the main
consideration in the administrative
* MPC Min, 5 Feb (source of quotation) and
30 Mar 43, MDR.
294
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
decision to set up a separate Manhat-
tan unit for monitoring Union Mines
survey and exploration activities, as
well as to maintain liaison with Dis-
trict headquarters and its major pro-
curement office at Madison Square.
On 15 June, in rooms adjacent to
those of Union Mines, the district en-
gineer established the Murray Hill
Area Engineers Office and, as area
engineer, assigned Maj. Paul L.
Guarin.^
While Major Guarin was organizing
a small staff of technical experts and
clerks. Union Mines started recruiting
trained personnel for its staff By
mid- 1944, the company had assem-
bled approximately 130 individuals,
assigning half of them to the New
York office and the rest to field
projects in the United States and
abroad. To achieve its program objec-
tives. Union Mines organized staff
functions along several lines. The
New York-based geologists, transla-
tors, and clerks concentrated on a
thorough search of available technical
literature on world mineral resources,
in all languages. Field teams of
mining engineers and geologists in-
vestigated known or suspected
sources of uranium and thorium. A
small group in New York studied
ways to improve the methods and
equipment for ore exploration, and
another small unit at Union Mines
headquarters oversaw research on
beneficiation and metallurgical pro-
cesses that might be suitable for con-
centration of uranium ores. Making
maximum use of the nearby facilities
of Union Carbide, Union Mines was
able to administer the entire ore pro-
gram with a relatively small overhead
staff and at a cost of approximately
$600,000 a year.6
During the period of its wartime
operations. Union Mines supplied
Manhattan leaders with a variety of
reports. After studying the various in-
struments and techniques for area
surveying and ore testing. Union
Mines research staff compiled data on
the latest or improved devices for de-
tecting uranium and thorium deposits
and for testing ore samples. It also
examined some sixty-five thousand
volumes and, based on its findings,
produced fifty-six reports covering
occurrences of uranium and thorium
in about fifty different countries, in-
cluding not only enemy-controlled
lands such as Czechoslovakia and
Thailand but also areas as remote as
Greenland and Madagascar. And from
the company's field exploration pro-
gram, field teams prepared a total of
fifty-seven reports of investigations
carried out in thirty-six states and the
territory of Alaska and about forty-
five reports of investigations conduct-
ed in some twenty foreign countries."^
5 Groves, Xow It Can Be Told. p. 180; First Annual
Rpt, Murray Hill Area Engrs Oflice, sub: Proj S-37,
30 Jun 44, pp. 1-2, OROO; Memo, Guarin to
Groves, sub: Union Mines Proj, 6 Jul 44, Admin
Files, Gen Corresp, 095 (Union Mines), MDR;
MDH, Bk. 7, Vol. 2, "Geographical Exploration,"
pp. 1.1-1.3, DASA.
6 Rpt, Murray Hill Area Engrs Office, 30 Jun 44,
pp. 2-8, 12-13, 42-44 (Charts 2-4), OROO;
Groves, sub: Union Mines Proj, 6 Jul 44, MDR;
MDH, Bk. 7, Vol. 2, pp. 1.2-1.3 and 3.2-3.5, DASA.
^ MDH, Bk. 7, Vol. 2, pp. 1.4-1.16 and Apps. Bl
(list and summary of all reports by Literature Re-
search Div-B5), DASA. Rpt, Murray Hill Area Engrs
Office, 30 Jun 44, pp. 22-34, OROO. Memo, Mer-
ritt to Nichols, sub: Resume of Prod of Uranium
Products for MD in Colorado Plateau Area, 26 Jan
45, 410.2 (Uranium); Rpt, Union Mines, sub: Sum-
mary of Investigations to 1 Feb 44, same date, 095
(Union Mines). Both in Admin Files, Gen Corresp,
MDR. Ltr. Stimson to MacArthur (Cdr in Chief. SW
Conlinucd
THE RAW MAITRIALS PROGRAM
295
Beginning in early 1944, the
Murray Hill area engineer used the
Union Mines data to provide the dis-
trict engineer with comprehensive
lists appraising uranium production
possibilities in various countries. A
typical list, for example, rated occur-
rences in the Belgian Congo as excel-
lent; those in the United States,
Canada, and Sweden as good; those
in Czechoslovakia, Portugal, and
Union of South Africa as fair; and
those in Madagascar, Australia, Brazil,
and England as poor. By 1945, the
area engineer was also including re-
ports on thorium. Brazil and India
were rated excellent, while the United
States, Korea, Netherlands East
Indies, Malaya, and Siam were judged
fair. In this manner, the Union Mines
data provided the essential guidelines
for reaching the long-range objective
of the ore program.®
Ore Control Agency: Combined
Development Trust
By the summer of 1943, the Ameri-
can atomic project's supply require-
ments for sufficient raw materials had
convinced its leaders of the impor-
tance of establishing adequate control
over the world's more significant de-
posits of uranium and thorium. In its
21 August report to the President, the
Military Policy Committee advanced
Pacific Area). 31 Mar 44. HB Files, Fidr 25. MDR.
.Stimson wrote to MacArthur requesting clearance
for a visit by a L'nion Mines representative interest-
cA in "inlormation |on| certain natural resources
which might be founcJ in vour theater."
» Rpt. Murrav Hill Area Kngrs OfTice. .SO jun 44,
pp. 8-11, OROO. MDH. Bk 7, Vol. 2. pp. 1.16-
1.21. DASA. Rpt, Union Mines, sub: .Summary of
Investigations to 1 Feb 44, same date; Memo,
(iuarin to Groves, sub: I nion Mines Proj, 6 Jul 44.
Both in Admin Files, Cien Corresp, 095 (I'nion
Mines), MDR.
this idea, warning that "the major
world supply [is] in the Belgian
Congo [and] not under our control in
any way.^ This situation, the commit-
tee felt, did not bode well for the
United States, especially in the post-
war era: America's knowledge and
technical capability to fabricate atomic
weapons would be of no avail without
the raw materials to do the job.
How to secure these raw materials
became a priority issue for project
leaders, who felt one way was to gain
control over the Congo supply.
During the fall. Colonel Nichols at-
tempted to convince Union Miniere
Director Edgar Sengier that the flood-
ed Shinkolobwe mine should be re-
opened and its entire future output
sold to the United States; however,
Sengier, who understood the poten-
tial of atomic power, did not wish to
make any commitments that he could
not later justify to the Belgian gov-
ernment as having been based upon
military requirements.
The American failure to secure a
long-term contract from Sengier for
future production of Congo ore came
up for discussion at the 14 December
meeting of the Military Policy Com-
mittee. The consensus of the commit-
tee was that, with the Belgian govern-
ment in exile in London and British
commercial interests apparently hold-
ing or having direction over nearly a
third of Union Miniere stock. Great
Britain was likely to gain control of
the Congo uranium. So from the
American point of view, the commit-
tee concluded, the best move would
be to secure joint control. Conse-
9 MPC Rpt, 21 Aug 43, MDR. Although signed by
Bush, Groves had drafted this report.
296
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
quently, on the seventeenth, the
American and British members of
the Combined PoHcy Committee, ^"^
agreed to begin studies preparatory
to recommending joint action. ^^
Speaking for the Mihtary PoHcy
Committee, General Groves recom-
mended to the President in February
1944 that the Belgians be "strongly
encouraged" to reopen the Shinko-
'" Churchill and Roosevelt's signing of the
Quebec Agreement on 19 Aug 43 established the
Combined Policy Committee in Washington, D.C.,
with membership as follows: Secretary Henry L.
Stimson (United States), as chairman, Dr. Vannevar
Bush (United States), Dr. James B. Conant (United
States), Field Marshal Sir John Dill (Ignited King-
dom), Col. John J. Llewellm (llnited Kingdom), and
Mr. Clarence D. Howe (Canada). Field Marshal Dill
was head of the British Joint Staff Mission in Wash-
ington, Colonel Llewellin was the Washington rep-
resentative of the British Ministry of Supply, and
Mr. Howe was Canada's Minister of Munitions and
Supplv. See Cowing, Britain and Atomic Energy, pp.
170-72, and Groves, Xow It Can Be Told pp. 133-37.
'•MPC Min, 14 Dec 43, MDR; CPC Min, 17 Dec
43, HB Files. Fldr 10, MDR; Ms, "Diplomatic Hist
of Manhattan Proj." p. 18, HB Files, Fldr 111,
MDR; Groves, Xow It Can Be Told. p. 170. After the
breakdown of Anglo-American collaboration on
atomic matters in early 1943, Great Britain devel-
oped a strong interest in securing a reliable source
of uranium for its future needs. Two actions by the
United States, however, caused leaders of the Brit-
ish atomic project to feel genuinely alarmed: in the
spring, when the United States contracted to pur-
chase practically the entire output of the (Canadian
Eldorado mine (hitherto the chief source of uranium
for the British program) through the end of 1945;
and in the fall, when the United States attempted to
buy the entire output of the Belgian-owned Shinko-
lobwe mine in the Congo. The first incident was
sufficient impetus for the British to seek a resump-
tion of Anglo-American cooperation, and in August
the two allies signed the Quebec Agreement. The
signing of this agreement opened the way for the
two atomic partners to pursue a joint program to
obtain control of the world's uranium resources. Al-
though the fall incident seemed threatening to Brit-
ish interests, the United States realized by the end
of the year that Great Britain occupied a better van-
tage point and thus took the initiative to implement
joint cooperation and control measures. For an ac-
count of Anglo-American problems and coordina-
tion on uranium supplies see Ciowing, Bntain and
Atomic Energy, pp. 179-85.
lobwe mine and that the United
States and Great Britain take what-
ever steps were necessary to ensure
"joint control" of uranium in the
Congo. The two countries also should
collaborate to secure all accessible
supplies elsewhere, "not only for the
period of the war, but for all time to
come." The Top Policy Group en-
dorsed these recommendations and,
on the fifteenth. Secretary Stimson
and OSRD Director Vannevar Bush
lunched with Roosevelt and secured
his approval. ^^
Following these recommendations,
the Combined Policy Committee gave
its tentative approval to a draft plan
for American-British-Canadian col-
laboration on 17 February. The com-
mittee would establish a Washington-
based business corporation, or similar
agency, headed by a board of six di-
rectors (three to be chosen by the
United States, two by Great Britain,
and one by Canada), and the United
States would pay half the cost of the
organization. Great Britain and
Canada the rest. As directed by the
committee, the new organization
would give first consideration to ob-
taining control of the Congo ore
deposits. ^^
'2 Quotations from MPC Rpt, 4 Feb 44, OCG
Files, Gen Corresp, MP Files, Fldr 25, Tab C, MDR.
See also Memo, Bush to Bundy, 14 Feb 44, OCG
Files, Gen Corresp, MP Files, Fldr 25, MDR; Stim-
son Diary, 15 Feb 44, HLS; Cowing, Bntain and
Atomic Energy, pp. 298-99.
"CPC Min, 17 Feb 44, OCG Files, Gen Corresp.
MP Files, Fldr 9, Tab B, MDR; Stimson Diary,
17 Feb 44, HLS; Articles of Agreement Governing
Collaboration Between the Authorities of the United
States of America, the Kingdom of Great Britain,
and the Dominion of Canada in the Matter of Urani-
um Ore, draft of 14 Feb 44, HB Files, Fldr 23.
MDR. The draft adopted on the seventeenth does
not appear to have differed substantiallv from that
THE RAW MATERIALS PROGRAM
297
Final negotiations on this wartime
agreement took place in London be-
tween Sir John Anderson, now Chan-
cellor of the Exchequer, and Ameri-
can Ambassador John G. Winant.
This arrangement made for a some-
what ticklish stituation, for neither
Secretary of State Cordell Hull nor
anyone else in the Department of
State knew anything about the exist-
ence of the Manhattan Project. In the
interest of continued secrecy, Presi-
dent Roosevelt took the view that
Ambassador Winant was his repre-
sentative, not Secretary Hull's, and
that negotiations could be conducted
through Winant without recourse to
the Department of State. He designat-
ed Secretary Stimson to oversee the
negotiations, and instructions reached
Winant over Stimson's rather than
Hull's signature. For these delicate
negotiations then, the War Depart-
ment assumed a role normally accord-
ed to the State Department. Although
highly irregular, the War Department
continued to play this role in subse-
quent quests for overseas uranium
and thorium resources.
Winant's instructions were carried
by Maj. Harry S. Traynor, a highly
trusted officer on the Manhattan Dis-
trict staff, whom General Groves de-
tailed to brief and assist the ambassa-
dor.^'* Traynor arrived in London in
dated on the fourteenth (cf. Hewlett and Anderson,
Xew World, p. 286). The arrangement was strictly for
wartime purposes. Following the end of hostilities,
it was subject to review and such revisions as might
be necessary to meet postwar conditions.
''• Description of London negotiations based on
voluminous collection of memorandums, reports,
cables, drafts, and similar materials in HB Files,
Fldrs 48, 54, 56, 60, 65, and 99, MDR. See especial-
ly narrative reports by Major Traynor in Fldr 89 and
an account by him reproduced in Groves, Xow It
Can Be Told, pp. 171-74. See also Stimson Diary,
Mar-Jun 44, passim, HLS.
mid-March, armed with a letter from
the President, a copy of the draft
agreement, and instructions to do
everything in his power to assist
Winant in completing the accord as
quickly as possible. "Any delay in ne-
gotiations," wrote Roosevelt to his
ambassador, "might prejudice a suc-
cessful conclusion." ^^
Despite this admonition for speed,
nearly three months passed before
the London conferees were able to
resolve the intricate problems associ-
ated with preparing the so-called
Agreement and Declaration of Trust.
Some of these problems were legal in
nature, and to aid in their solution
Winant requested the assistance of
Brig. Gen. Edward C. Betts, judge ad-
vocate general of General Eisenhow-
er's European Theater of Operations
headquarters, and Secretary Stimson
complied. Betts, whom Winant trust-
ed implicitly, also enjoyed the confi-
dence of Sir Thomas Barnes, Sir John
Anderson's legal adviser, and the two
men worked well and easily with each
other.
One legal question that arose even
before Traynor left for England was
raised by the President himself: If
the proposed organization was es-
tablished as a corporation, could its
existence and transactions be kept
a secret under United States law?
There was general agreement that
Roosevelt's concern for security was
justified, and after considerable legal
study. Sir Thomas suggested and
General Betts agreed that the best so-
lution was to make the organization a
common law trust.
'n.tr, Roosevelt to Winant, 3 Mar 44, HB Files,
Fldr 60. MDR.
298
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
A second legal problem was wheth-
er the President had the authority to
enter into the type of agreement con-
templated. Two briefs were prepared
on this question — the first, at the di-
rection of Secretary Stimson, by Brig.
Gen. Boykin C. Wright, the Army
Service Forces' International Division
director, who as a civilian had headed
a New York law firm; and the second,
on General Groves's orders, by three
lawyers on the Manhattan staff: Lt.
Col. John Lansdale, Jr., Maj. William
A. Consodine, and Pvt. Joseph Volpe,
Jr. Both briefs agreed that the pro-
posed arrangement was within the
power of the President to make exec-
utive agreements without recourse to
Congress, but both also questioned
the legality and practicability of estab-
lishing a corporation. General Betts
seconded these conclusions, which
further supported the recommenda-
tion that the organization be estab-
lished as a trust.
There were also other questions.
Should Canada be a signatory to the
trust agr«"'"ment? Should thorium be
included with uranium as a valuable
source of fissionable material? The
question concerning Canada arose be-
cause it was not a party to the
Quebec Agreement. The conferees
decided to drop all references to the
country from the trust agreement, but
Winant and Anderson stipulated in an
exchange of letters that one of the six
directors of the trust would be a Ca-
nadian.^® As for thorium, because
Metallurgical Laboratory scientists in
the spring of 1944 had concluded
that it might eventually prove to be
the best fuel for atomic piles, the con-
ferees in London decided to include
it with uranium in the Declaration of
Trust.
The negotiations were monitored
carefully from Washington, where
Secretary Stimson, Harvey Bundy, as
Stimson's special assistant for scientif-
ic affairs, and General Groves kept in
close communication with Winant.
Drafts of the proposed trust agree-
ment were sent back and forth be-
tween the two capitals, and in the
midst of the London talks Traynor
traveled to Washington to confer with
his superiors. This coordination, how-
ever, did not result in a timely resolu-
tion of the discussions, which were
complicated by the fact that Ambassa-
dor Winant, Major Traynor, Sir John
Anderson, and W. L. Gorell Barnes, a
representative of the British Foreign
Office, simultaneously were involved
in quite lengthy negotiations with
Belgian officials in London regarding
an agreement on future control and
development of the rich Congo ore —
the primary reason for establishing
the trust. ^"^
It was early June before the confer-
ees had coordinated and affirmed in
final form all aspects of the Decla-
ration of Trust. Prime Minister
Churchill signed first, affixing his sig-
nature on two copies of the agree-
'^ Earlier the British and Americans had agreed
that Canada should share in controlling the Congo
uranium supplv. Sec Ltr, Field Marshal Dill to
Bundv, 6 Mar 44, HB Files, Fldr 48, MDR.
'■^ Copies of various drafts of trust agreement and
related work papers m HB Files, Fldr 48, MDR.
Drafts and fmal text of Belgian Agreement in HB
Files, Fldr 57, MDR. See also Major Traynor's
Notes on [First] Trip to London, England, 12 Apr
44, and Rpt on Second Trip to London, 22 May 44,
submitted to Bundv, Attn: Secy War. Both in HB
Files, Fldr 99, MDR.
THE RAW MATERIALS PROGRAM
299
ment. Forthwith, a special courier car-
ried the documents to Washington,
where, on the thirteenth. President
Roosevelt also signed them. This
trust agreement established the Com-
bined Development Trust which,
under the general direction of the
Combined Policy Committee, would
supervise the acquisition of raw mate-
rials in "certain areas" outside of
American and British territory.^* The
individuals named as trustees, whom
the committee approved at its next
meeting in September, were: for the
United States, Charles K. Leith, a dis-
tinguished mining engineer, George
L. Harrison, a businessman and spe-
cial assistant to Stimson who had
been helping out on Manhattan prob-
lems, and General Groves; for Great
Britain, Sir Charles J. Hambro, head
of the British Raw Materials Mission,
and Frank G. Lee, a British Treasury
representative; and for Canada,
George C. Bateman, a deputy minis-
ter and member of the Combined Re-
sources Board in that country. At the
first meeting of the Trust on the four-
teenth, Groves was elected chairman
and Sir Charles deputy chairman of
the group. ^^
Ore Acquisition in Foreign Areas
For the leaders of the American
atomic energy project, the much en-
'*Onc of two originals of Agreement and Declara-
tion of Trust, dated 13 Jun 44, the day Roosevelt
signed, filed in HB Files, Fldr 49, MDR. The term
certain areas was introduced so as not to offend Rus-
sian sensibilities when the terms of the agreement
became public. Msg, Stimson to W'inant, 17 Apr 44,
HB Files, Fldr 106, MDR.
'^CPC Min (draft version of minutes prepared by
Bundv and Webster, the CPC's joint secretaries),
19 Sep 44, HB Files, Fldr 13, MDR; CDT Prov
Min, 14 Sep 44, OCG Files, (,en Corresp, MP Files,
Fldr 9. Tab B, MDR.
larged program of exploration, con-
trol, and acquisition of radioactive
ores in foreign areas represented the
logical continuation and expansion of
the ongoing ore program in the
United States and Canada. ^° Because
the deposits would be in countries
not under American or British con-
trol, they left the problem of acquisi-
tion to the Combined Policy Commit-
tee and the Combined Development
Trust. Operating at the international
level, these joint American-British
groups were technically outside the
direct control of the Manhattan Dis-
trict; however, their activities inevita-
bly were influenced greatly and relat-
ed closely to those of the American
project, not only because in the fore-
seeable future the latter would have
the greatest need for fissionable ma-
terials but also because two of its in-
fluential personalities held key posts
in both organizations. General
^^ In July 1943, Union Mines surveyed the Great
Bear Lake region in Canada through a Canadian
subcontractor. Ventures, Ltd. This firm was author-
ized to make purchases for Union Mines, but the
project was barely under way when in September
the Canadian government decided to take control of
all radioactive substances in the Yukon and North-
west Territories, promising to keep the L'nited
States fully informed concerning all ore discoveries
and to exploit them for the mutual benefit of both
countries. In the spirit of the Quebec Agreement,
General Groves subsequently arranged to have
Union Mines terminate its contract with Ventures
and transfer all of its claims to the Canadian gov-
ernment. Union Mines settled its contract with Ven-
tures in late 1944, agreeing to a lump-sum pavment
to cover all costs incurred bv the Canadian firm. See
MDH, Bk. 7, Vol. 2, pp. 2.2-2.4, DASA. Memo,
Groves to Bush, Purnell, and Styer, 27 Sep 44;
Memo, Nichols to Groves, 17 Oct 44, Incl to Memo,
Nichols to Groves, sub: Agreement With Canadian
Govt, 8 Nov 44. All in OCG Files, Gen Corresp, MP
Files, Fldr 2, MDR. Stanley U \ Dziuban, Militaiy Re-
lations Between the l'nited States and Canada. 1939-
1945. U.S. Army in World War II (Washington,
D.C.: Government Printing Office, 1959), pp. 287-
88.
300
MANHATTAN: THE ARMY AND 1 HE ATOMIC BOMB
Groves, as chairman of the Combined
Development Trust, tended to domi-
nate its activities. And in the Com-
bined PoHcy Committee, Maj. Gen.
Wilhelm D. Styer headed the impor-
tant technical subcommittee, whose
reports furnished much of the data
for the parent committee's decisions
on matters relating to Manhattan's
production and weapons development
program. ^^
The first important achievement for
the United States and Great Britain
was final agreement with the Belgians
in early fall of 1944. As soon as the
two countries had reached agreement
in June on establishment of the Trust,
General Groves and Sir Charles
Hambro, acting on behalf of the
Trust, began direct negotiations with
Edgar Sengier to expedite arrange-
ments with the African Metals Corpo-
ration for reopening Union Miniere's
Shinkolobwe mine. The diplomatic
negotiations finally culminated in the
Belgian, or Tripartite, Agreement of
26 September, effected by an ex-
change of letters among Foreign Min-
ister Paul H. Spaak of Belgium, Chan-
cellor Anderson, and Ambassador
Winant.22
2'CPC Min, 8 Sep 43, HB Files, Fldr 9, MDR;
CDT Prov Min, 14 Sep 44, OCG Files, Gen Cor-
resp. MP Files, Fldr 9, Tab B, MDR.
22 Ltrs, Spaak to Winant and Anderson, both 26
Sep 44, and Incl (Memo of Agreement); Ltrs, An-
derson and Winant to Spaak, both 26 Sep 44. All m
HB Files, Fldr 49, MDR. Extensive materials, includ-
ing copies of correspondence, cables, notes of meet-
ings, cirafts and texts of agreements, relating to the
Belgian Agreement and the arrangement with the
African Metals Corporation are in HB Files, Fldrs
17, 54, 55, 57, 106, MDR. and m OCG Files, Gen
Corresp, MP Files, Fldr 16, MDR. A brief descrip-
tion of the negotiations and an analysis of the
agreements made mav be found in Ms, "Diplomatic
Hist of Manhattan Proj," pp. 17-18 and 25-26, HB
Files, Fldr 111, MDR.
Under terms of the agreement, Bel-
gium granted the United States and
the United Kingdom an option on all
of its uranium and thorium resources
in recognition of the fact that "the
protection of civilization" required
"effective control of said ores. . . ."
The option was to continue in effect
for the period needed to carry out
ore contract arrangements set up
under the agreement, as well as for
an additional ten-year period. Bel-
gium reserved the right to retain such
ore as might be needed for "her own
scientific research and . . . industrial
purposes. . . ." ^^
But the two atomic partners did not
secure this control over the Congo
ore deposits without making some
major concessions. President Roose-
velt had approved the concessions in
August 1944, harking to the advice of
Stimson, who monitored the negotia-
tions, that if they were not granted
the Belgians might delay indefinitely
reopening the Shinkolobwe mine. Of
particular importance was the two
allies' agreement to enter into a con-
tract between the Trust and African
Metals for purchase of 3.44 million
pounds of uranium oxide under terms
acceptable to the Belgian govern-
ment. In addition, they also assented
to furnish Union Miniere with the
new equipment and materials it would
require to reopen and operate the
Shinkolobwe mine. Finally, they
granted the Belgians the right to par-
ticipate in any future utilization that
might be made of the Congo ores "as
23 Memo of Agreement, Incl to Ltrs, Spaak
Winant and Anderson, both 26 Sep 44, MDR.
THE RAW MATB:RIALS PROGRAM
301
a source of energy for commercial
purposes. . . ." ^4
Meantime, representatives of the
Trust and African Metals, conferring
in New York, had worked out the
terms of the contract to cover the
procurement of the 3.44 million
pounds of uranium oxide. On 17 Oc-
tober, they signed the formal con-
tract. It provided that the Trust
would purchase only the oxide in the
uranium ore, letting African Metals
retain the radium and other precious
metals contained in the concentrate.
Reaching agreement on a fair price
was difficult, for its value had never
been determined on the open market
and depended ultimately upon the
success of the atomic bomb project.
They finally settled upon a price
based primarily on known cost fac-
tors— $1.45 a pound for high-grade
material, five cents less for low grade,
free on shipboard at the port of
Africa (Lobito in Angola or Matadi in
the Belgian Congo). Perhaps partly to
compensate for any losses likely to
result from the uncertainty as to a fair
price, the Trust agreed to reimburse
Union Miniere for costs it incurred up
to $550,000 in reopening Shinko-
lobwe mine, and also to assist it in
procuring materials, equipment, and
skilled labor. With this assistance,
Union Miniere, which already had
taken preliminary steps for resump-
tion of uranium mining operations in
the Congo, estimated that it could
begin delivery of new oxide to the
Manhattan Project bv late 1945 or
early 1946.2 5
In anticipation of the heavy finan-
cial obligations that the Trust would
have to meet under terms of the Afri-
can Metals contract, as well as under
other ore acquisition contracts that it
expected to negotiate in the future,
the American trustees had already
taken steps to secure funds for pay-
ment of the United States' share of
the cost of Trust operations. This had
turned out to be a fairly complex
problem, because the Trust's require-
ment for extreme secrecy and for
continuous access to funds without
time limitations to meet contractual
obligations tended to run counter to
legally established governmental fiscal
procedures. General Groves had un-
dertaken responsibility for coming up
with a plan that would circumvent
these legal barriers without impairing
the contractual capabilities or security
of Trust operations. Groves present-
ed his plan to the Combined Policy
Committee on 19 September 1944,
emphasizing that the objectives of the
agreement under which the Trust had
been set up in the previous June
made absolutely necessary an access
to adequate funds. The committee
unanimously endorsed the plan and
Groves set about immediately to put
it into effect. 26
The essential feature of Groves's
plan was a special fund to be deposit-
ed with the Department of the Treas-
ury, from which he or other designat-
2* Ibid.; Memo, Slimson to President. 25 Aug 44,
HB Files, Fldr 49. MDR.
26 Ltr, Groves to Stimson, 24 Nov 44, HB Files,
Fldr 27, MDR; CPC Min. 19 Sep 44, MDR; Croves,
\ow It Can Be Told. pp. 177-78.
26 Groves had in mind paragraph 2 of the Agree-
ment and Declaration of Trust, dated 13 Jun 44,
which directed that the CDT should "gain control
of and develop production of Uranium and Thori-
um supplies in certain areas . . . and for that pur-
pose . . . take such steps as it may in the common
interest think fit" to accomplish this objective. 1 he
original of this agreement is in HB Files, Fldr 13,
MDR.
302
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
ed American members of the Trust
could draw money as needed, without
further authorization being required.
Money from this fund would be
placed in the Federal Reserve Bank in
New York City to cover the United
States' share of payments on Trust
contracts. On 21 September, Under
Secretary of War Robert P. Patterson
directed allocation to Groves of an
initial sum of $12.5 million from
funds already appropriated for na-
tional defense purposes. By the time
Groves received the check, however,
his legal staff had found that funds
deposited with the Treasury were
subject to handling and processing by
many employees in both the Treasury
and the General Accounting Office,
too great a security risk for the Man-
hattan Project. A possible alternative
was to deposit the money directly in
the Federal Reserve Bank in New
York City or in a private banking in-
stitution in that city. But after further
consultation with War Department
lawyers and with Secretary Stimson
and George Harrison, a fellow trust-
ee, Groves concluded that probably
not even this step could be taken
without first informing Secretary of
the Treasury Henry Morgenthau.
On 17 October, Groves and Harri-
son met with Stimson in his office to
try to resolve the Trust's quandary
over its funds. There appeared to be
no legal way around the requirement
that the Trust must secure the con-
sent of Secretary Morgenthau before
depositing the $12.5 million with the
Treasury. Yet Stimson was convinced
Morgenthau would insist on having
full knowledge of the atomic bomb
project before giving his consent.
This, Stimson felt, he could not do
without permission from the Presi-
dent, whom he did not wish to bother
concerning such a relatively unimpor-
tant matter. Stimson finally was per-
suaded to attempt to get Morgen-
thau's sanction of the special fund
without telling him the reason for its
existence; but, as the Secretary of
War had predicted, he refused. Fortu-
nately, however, further negotiations
between Manhattan District and
Treasury officials revealed that Secre-
tary Morgenthau maintained several
accounts in his office which were not
subject to the usual auditing and ac-
counting procedures and that Trust
funds might be placed in one of them
without danger of exposure. Groves
visited the Treasury Secretary on
27 October and, still without reveal-
ing the purpose, received permission
to place Trust money in one of the
special accounts. Henceforth, Groves
made withdrawals from the account,
depositing them in the Bankers Trust
Company of New York to cover pay-
ments on the African Metals and
other contracts. In the period from
late 1944 until he resigned from the
Trust at the end of 1947, the Manhat-
tan commander deposited a total of
$37.5 million in the Trust's Treasury
account. ^^
2 7 The complex history of CDT financing may be
traced in the following documents. Except as other-
wise indicated, all items are in MDR, OCG Files,
Gen Corresp, MP Files, Fldr 9, Tab B: CDT Prov
Min, 14 Sep 44; Memos, Und Secy War to WD
Budg Off, 21 Sep 44 and 4 Aug 45; Memos for File,
Groves, both 17 Oct 44; Memo, Groves to Secy
War, 27 Oct 44; Ltr, Daniel W. Bell (Act Secy
Treas) to Groves, 30 Oct 44; Ltr, Groves, Harrison,
and Leith to Sloan Colt (Bankers Trust Co. presi-
dent), 15 Nov 44; Memo, Groves to Secy War, 6 Jun
45, HB Files, Fldr 37, MDR; Memo, Groves to Und
Secy War, 4 Aug 45; Ltr, Groves to Fred M. Vinson
(Secy Treas), 14 Aug 45; Memo, Groves to WD
Budg Off, 24 Aug 45; Memo, Col Ernest C. Bomar
Continued
THE RAW MAI ERIALS PR()(,RAM
303
In late 1944, the British were inter-
ested in devising a more comprehen-
sive plan for a long-range procure-
ment program for raw materials.
They expressed a particular need for
a study that would provide informa-
tion on developing radioactive ore
sources within British areas outside of
Canada. At its 19 September meeting,
the Combined Policy Committee
agreed unanimously that the Trust
should undertake a worldwide survey
of current and potential sources of ra-
dioactive materials. Committee mem-
bers also acknowledged the need for
more data on requirements, but they
emphasized the theoretical nature of
scientific and technical information
and the difficulty of obtaining accu-
rate estimates. Nevertheless, the com-
mittee directed its technical subcom-
mittee to investigate and report on
the uranium required for a "unit ex-
plosive of specified energy ..." and
for the next stage in development of
atomic weapons, as well as scientific
and technical factors that might have
an important effect on future ore re-
quirements for atomic explosives.^®
The technical subcommittee com-
pleted its report in mid-November;
however, after hearing a brief oral
(Act WD Budg Off) to CG ASF, Attn: Office of
Fiscal Dir (Col Foster), sub: CDT, 28 Aug 45, and
1st Ind. HQ. ASF, Office of Fiscal Dir, fwd to Und
Secy War, Attn: Col Freidlich, 30 Aug 45, HB Files,
Fldr 51, MDR; Ltr, (iroves to Secy Treas, sub: Ter-
mination of Account, 5 Dec 47; Ltr, E. F. Bartlet
(Fiscal Asst Secy, I reas) to Groves, 8 Dec 47; Ltr,
Groves to Secy Armv, 8 Dec 47. See also Groves,
Xoiv It Can Be fold. pp. 1 76-77.
28 Quoted phrase from CPC Min, 19 Sep 44,
MDR. Memo, Sir Ronald L CamplK-ll (British CPC
member) to CPC Joint Secys, sub: Development of
Coordinated Prgms for Procurement of Raw Materi-
al for T(ube) A(lloys) Proj, 24 Aug 44; Ltr, Bundy
and Webster to Stver, 2 Oct 44. Both in HB Files,
Fldr 27, MDR.
summary of its contents in January
1945, the Combined Policy Commit-
tee laid it aside without further
action. The committee followed a
similar course with the Trust's ore
survey, which Groves had sent to
Stimson on 24 November. Although
based upon more complete data from
the Murray Hill Area Engineers Office
sources compiled by Union Mines and
from the British Directorate of Tube
Alloys, the survey did not substan-
tially alter the overall picture that Union
Mines had depicted in its earlier re-
ports submitted to the district
engineer. ^^
As chairman of the Trust, General
Groves made some specific recom-
mendations based on data from the
Trust's ore survey. The United States
and Great Britain should continue in-
vestigation into uranium and thorium
resources, organizing permanent
survey groups in England and Canada
similar to the Union Mines teams op-
erating in the United States; every
effort should be made to build up
stockpiles in territories controlled by
the two countries; major ore deposits
outside these territories (for example,
uranium in the Congo and thorium in
Brazil) should be purchased and
shipped for storage to areas under
control of the two atomic powers; and
lesser deposits (for example, in Portu-
gal, Czechoslovakia, and Madagascar)
29 CPC Min, 22 Jan 45, HB Files, Fldr 14, MDR;
Memo, Tech Subcommittee to CPC, sub: Ore Re-
quirements for Prod of Explosives, 16 Nov 44, HB
Files, Fldr 27, MDR; Chart (analvsis of estimated re-
quirements of uranium ore for each of several pro-
posed tvpes of atomic weapons), OC-G Files, Cien
Corresp, MP Files, Fldr 2, MDR; Rpt, CDT, sub:
Survey of W orld's Resources of Uranium and Thori-
um, 26 Oct 44, Incl to Ltr, Groves to Stimson,
24 Nov 44, MDR.
304
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
should be brought under control by
purchase or by political agreements.
The United States and Great Britain
endeavored to carry out most of
these recommendations. Where politi-
cal or diplomatic negotiations were
required, action was taken through
appropriate government channels.
Where commercial agreements
would suffice, the Trust initiated
negotiations. ^°
The quest for other sources contin-
ued in 1945. Early in the year British
officials began negotiations with the
British and Portuguese owners of ura-
nium mining properties in Portugal,
preparing the way for their purchase
by the Trust. At the end of January,
Colonel Guarin, Manhattan's raw ma-
terials expert, returned from an ex-
tended inspection trip to the Congo
with new information on the progress
being made by Union Miniere in re-
opening the mines there, and as a
result of his report, the Trust negoti-
ated with African Metals for the pur-
chase of more Congo ores that
summer. Even the advancing Allied
forces in Belgium, France, and Ger-
many furnished additional small
quantities of captured uranium ore
stores.^ ^
These seized stocks became a
matter of slight disagreement be-
tween the United States and Great
Britain. The Declaration of Trust pro-
vided that all uranium, or thorium,
secured from whatever source was to
be held jointly, but it was generally
3° Ltr, Groves to Stimson, 24 Nov 44, MDR.
31 CPC Min, 22 Jan 45, Fldr 14; CPC Min, 8 Mar
45, Fldr 46 (copy in Fldr 105); CPC Min, 4 Jul 45,
Fldr 37 (copy in Fldr 105); Ltr, Stimson to Secy
State, 29 Jul 44, Fldr 7; Ms, "Diplomatic Hist of
Manhattan Proj", pp. 31-32, Fldr 111. All in HB
Files, MDR. Groves Diary, 29 Jan 45, LRG. Cowing,
Britain and Atomic Energy, pp. 313-14.
understood that the first objective of
the atomic program in both countries
must be to supply the American
project with the raw materials it
needed to develop and build suffi-
cient atomic weapons to win the war.
However, some British scientists felt
that at least a part of the captured
ore, which had been shipped from the
Continent to England for temporary
storage, ought to remain there to
ensure that the British Tube Alloys
project would have adequate supplies
on hand. Groves disagreed. When he
learned in June 1945 that ore cap-
tured in Germany was being held in
Great Britain, he wrote Secretary
Stimson and asked that the Combined
Policy Committee request its prompt
shipment to the United States "to in-
crease our margin of safety of raw
material." British committee members
expressed concern that allocation of
all of the ore to the United States
would leave Great Britain with virtual-
ly no reserves at the end of the war.
The committee, nevertheless, reaf-
firmed the policy that while the war
lasted all raws materials received by
the Trust, including that captured,
should go to the United States for
weapon production. At the same
time, to placate British fears, the com-
mittee stated that if the Trust should
acquire more than needed for the
manufacture of weapons, it should
hold it in reserve to be shared jointly
after the war.^^
3^ Quoted phrase from Memo, Groves to Stim-
son, 23 Jun 45, HB Files, Fldr 37. MDR. Agreement
and Declaration of Trust, 13 Jun 44, Fldr 49; Rpt,
CDT, sub: Survey of World's Resources of Uranium
and Thorium, 26 Oct 44, Incl to Ltr, Groves to
Stimson, 24 Nov 44, Fldr 27; CPC Min, 8 Mar 45,
Fldr 46. All in HB Files, MDR.
THE RAW MATERIALS PROGRAM
305
Incoming mineral survey reports in-
dicated that kolm, a coal-like material
intermixed yvith oil shale deposits
mined in Sweden, contained uranium.
In early 1944, a British team and a
group of Swedish mineral experts
concluded that kolm's potentialities
were sufficient to warrant denying
other powers access to the mineral.
At the request of the Combined
Policy Committee, the American min-
ister in Stockholm, Herschel V. John-
son, opened negotiations with the
Swedes. The negotiations, conducted
with the knowledge of the British
minister in Stockholm, ended without
a formal agreement. The Swedish
government, however, prohibited
export of uranium-bearing ores and
agreed to inform the United States
and Great Britain if in the future it
should decide to permit their
export. ^^
While the British gave full support
to the program for control and acqui-
sition of uranium, they were much
less enthusiastic about a similar pro-
gram for thorium. On 27 January
1945, British committee member Sir
Ronald I. Campbell, who had re-
placed Col. John J. Llewellin, wrote to
Stimson, expressing doubt as to the
wisdom of Groves's suggestion that
the Trust, without direct committee
approval, should undertake measures
that would likely require political
agreements and trade options. In Sir
Ronald's view, both the Combined
Policy Committee and the two gov-
ernments ought to have time to ex-
amine the implications of such negoti-
ations before the Trust proceeded.
Sir John Anderson advanced similar
views, emphasizing that widespread
occurrence of thorium limited the
possibility that the United States and
Great Britain could effectively prevent
other nations from acquiring and pur-
chasing substantial quantities of the
material. He also suggested that, be-
cause limited amounts of thorium
were needed in the immediate future,
the two allies should rely upon the
rather ample commercial production
available from the Indian state of
Travancore.
The United States, however, did
not want to rely solely on British
controlled thorium supplies and in
mid-February proceeded — without in-
forming the British government — to
investigate acquisition of supplies out-
side of British-American control. In
the meantime. Sir John had read
Colonel Guarin's report on the obsta-
cles to a rapid increase in uranium
ore production from the Congo and
also had learned of new information
that emphasized the potential of tho-
rium. Because of these developments,
he agreed in early March to go along
with a more vigorous policy on thori-
um. But he was overtaken by events,
for the United States was already
engaged in secret unilateral negotia-
tions with Brazil to gain access to its
thorium resources.^'*
Playing a significant role in laying
the groundwork of these negotiations
"CPC Min. 4 Jul 45. Fldr 'M: Draft of Proposed
Agreement With Swedish (iovt and Related Papers,
Jul-Aug 45, Fldr 53; Ms, "Diplomatic Hist of
Manhattan Proj," pp. 29-30, Fldr 111. All in
HB Files, MDR. Oowing, Bnlnin and Atomic Energy
p. 314.
^''Ftr, (irovcs to Stimson, 24 Nov 44; I.tr, Camp-
bell to Stimson, 27 Jan 45; Memo, sub: Supplies and
Requirements for liube) A(llovs), 3 Mar 45 (adden-
dum to memo giving Sir John Anderson's views,
dated 3 Feb 45). All in HB Files, Fldr 27, MDR.
(iowing, Bntani and .iloniic Eiiergy. p. 316.
306
MANHATIAN: THE ARMY AND THE ATOMIC BOMB
was General Groves, who was very
much aware that most atomic scien-
tists, including those in Germany and
the Soviet Union, recognized that
thorium might soon have to replace,
or supplement, scarce uranium. When
he learned Secretary of State Edward
R. Stettinius, Jr., would be passing
through Brazil in mid-February, en
route from the Yalta Conference
(3-11 February) to attend an inter-
American meeting in Mexico City, he
saw an opportunity to approach the
Brazilians secretly. Taking advantage
of a conference with the President on
other matters, Groves requested and
received permission to brief Stettinius
on the atomic project. He subse-
quently talked with Stettinius and also
arranged to have an officer from the
Manhattan staff, Maj. John E. Vance,
accompanv the Secretarv of State to
Brazil. ^^
On 17 February, Stettinius con-
ferred with President Getulio Vargas
on the question of thorium and the
Brazilian chief executive approved the
opening of negotiations. In the ensu-
ing months, specially appointed Bra-
zilian and American delegations — the
United States representatives includ-
ed three Manhattan officers: Col.
John Lansdale, Jr., Major Vance, and
1st Lt. Joseph Volpe, Jr. — worked out
details of an agreement, signed on 6
July 1945. It provided that the United
States would purchase each year for
three years at least 3,000 tons of tho-
rium-bearing monazite ore. In addi-
tion, the United States would have an
option to buy all other thorium-bear-
ing compounds Brazil might produce
in the initial three-year period, with
the right to renew this option for ten
more successive three-year periods.
The British had no knowledge of the
agreement, but in September the
United States agreed to the under-
standing reached earlier in March by
the Combined Policy Committee that
each country should have equal privi-
leges in any arrangement for thorium
acquisition and control made with
Brazil. 36
When the committee approved the
start of negotiations with Brazil, it
also endorsed taking steps to obtain
control of thorium in India and in the
Netherlands East Indies. The British
began discussions with Travancore
authorities in the summer of 1945,
but the negotiations proved difficult
and not until 1947 was a less than
satisfactory agreement reached. Nego-
tiations conducted at the same time
with the Dutch concerning the East
Indian sources were more successful,
and in August 1945 an agreement
granted thorium purchase options to
the United States and Great Britain. ^"^
3^ Memo, Groves to Bundv, 6 Feb 45, HB Files,
Fldr 27, MDR; Ciroves, .\'oiv' II Can Be Told. p. 184.
36 Memo, Groves to Bundy, 6 Feb 45. MDR;
Memo, Groves to MPC, 23 Feb 45, OCG Files. Gen
Corresp, MP Files, Fldr 23, Tab A. MDR; Ltr,
Groves to Secy War, 8 Mar 45, OCG Files, Gen
Corresp, MP Files, Fldr 9, Tab B, MDR; CPC Min,
8 Mar 45, HB Files, Fldr 46, MDR; Ms, "Diplomatic
Hist of Manhattan Proj," pp. 27-28 and Anns. 24-
25, HB Files, Fldr 111, MDR; Gowing, Bntairi and
Atomif Energy, p. 317.
"CPC Min, 8 Mar 45, Fldr 46; CPC Min, 4 Jul
45, Fldr 37; Memo, Groves to Stimson, 7 Jun 45,
Fldr 37. All in.HB Files, MDR. Gowing, Bntam and
Atomic Energy, pp. 317-18. Groves, Sow It Can Be
Told. p. 184.
CHAPTER XIV
The Feed Materials Program
The Manhattan District's acquisi-
tion of uranium- and thorium-bearing
ores was only the initial step in pro-
viding the essential materials for the
large-scale electromagnetic, diffusion,
and pile processes.^ The District also
had to bring under contract and to
monitor the operation of a complex
network of processing plants for re-
fining and converting the ore, first
into pure concentrates of uranium
oxide (black oxide) or sodium uranate
(soda salt) and then into the chemical
feed forms of uranium dioxide and
trioxide, uranium tetrafiuoride and
hexafluoride, and uranium metal.
Thus for the Army, development and
management of the feed materials
program, begun by the Office of Sci-
entific Research and Development
(OSRD) and Stone and Webster in
1941-42, proved to be one of its
most challenging and difficult tasks
in administering the atomic bomb
project.^
' Because thorium has fissionable properties simi-
lar to uranium, Manhattan Project leaders vigorous-
ly pushed a program to locate and control world re-
sources of this heavy element. But existence of ade-
quate supplies of uranium for the atomic bomb
project made unnecessary procurement and process-
ing of thorium during World War II.
2MDH, Bk. 7, \'ol. 1, Feed Materials and Special
Procurement, " pp. 1.1-1..T, DASA.
Program Organization and
Support Activities
With ore acquisition activities pro-
ceeding apace. District Engineer Mar-
shall in October 1942 formed a Mate-
rials Section to monitor the shipment
of uranium-bearing ores and other
materials from mines, tailing piles,
storage depots, and processing plants,
as well as their treatment through
various stages of refinement and con-
version into feed materials. He select-
ed Lt. Col. Thomas T. Crenshaw as
section head and assigned several Dis-
trict officers already familiar with
some aspect of materials procurement
to assist him — including Capt. Phillip
L. Merritt, a geologist by training,
and Capt. John R. Ruhoff, a chemical
engineer who, when serving as the St.
Louis area engineer, had overall re-
sponsibility for the District's uranium
metal production. Also, because of
Colonel Nichols's deep involvement
in the earlier OSRD acquisition
progam, Marshall had his deputy con-
tinue to give his special attention and
expertise to the District's feed mate-
rials program.^
^ I'nless otherwise indicated, details on the ad-
ministrative and personnel aspects of the feed mate-
rials program are based on ibid., pp. 1.15-1.22 and
(.oiiiimiod
308
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
The relocation of District head-
quarters from New York to Oak
Ridge in mid-August 1943 occasioned
a complete reorganization of the Ma-
terials Section. (See Chart 2.) Colonel
Nichols, now the district engineer, de-
cided to leave the materials group in
New York City, close by the ports of
entry and storage points for ores
coming from overseas and also con-
venient to the headquarters of many
of the firms under contract to supply
feed materials. He redesignated the
section as the Madison Square Area
Engineers Office and, with transfer of
Colonel Crenshaw to Oak Ridge as
the officer in charge of all Clinton op-
erations, assigned Ruhoff, recently
promoted to lieutenant colonel, to be
the Madison Square area engineer.
Colonel Ruhoff took over administra-
tion of a burgeoning materials group,
numbering nearly four hundred by
early 1944, and an indication of its
key role during the period of the
project's greatest activity, from late
1943 to the fall of 1944, was Nichols's
practice of coming to New York for
weeklv meetings with Ruhoff and his
staff. 4'
Apps. B1-B4 {Org Charts), DASA; Rpts, Mat Sec
(later Mad Sq Area Engrs Office), Oct 42-Aug 45,
passim. MD-319.1 (Rpts MSA), OROO. The period
covered in these reports on the materials program
varies from a single week to two months. The newlv
organized Materials Section on 28 Oct 42 submitted
its first report to the district engineer for Colonel
Nichols's attention, and the reconstituted Madison
Square Area Engineers Office on 6 Aug 43 submit-
ted its first report through Lt. Col. E. H. Marsden,
executive officer at the new District headquarters in
Tennessee, for the attention of the district engineer.
*Rpt, Mad Sq Area Engrs Office, 29 Apr 44, App.
3, OROO; Nichols, Comments on Draft Hist "Man-
hattan," Incl to Ltr, Nichols to Chief of Mil Hist,
25 Mar 74. CMH. Nichols arrived at the new desig-
nation of the area office because of its location near
Madison Square, at Eiflh Avenue and Iwenty-third
Street.
The Madison Square staff, three-
quarters of which worked in the New
York City area and the rest at various
points in the field, oversaw a program
comprised essentially of four oper-
ations: a search for additional raw ma-
terials; their procurement in whatever
form might be available; their refine-
ment; and their conversion into feed
materials. To ensure a steady flow of
raw and semirefined materials to the
project's processing plants, staff
members closely monitored the
scheduling of ore shipments from
Africa to the port of New York; made
or expedited arrangements for their
storage; approved procurement of
partially processed uranium-contain-
ing materials; and assisted in con-
tracting with crude ore refining firms
(African Metals Corporation, Eldo-
rado Mining and Refining Company,
and Vitro Manufacturing Company)
to obtain uranium oxide, uranium
sludge, radium and radioactive lead,
and similar products. They also over-
saw various research programs
(Princeton and Yale Universities, Mas-
sachusetts Institute of Technology,
and National Bureau of Standards),
supplying them with an ever-increas-
ing variety of other chemicals and
special materials.
Staff members in the field provided
liaison between the Madison Square
office and seven area offices reporting
to Ruhoff (Chart 4). Of these, two—
the Murray Hill Area Engineers Office
in New York and the Colorado Area
Engineers Office in Grand Junction —
monitored materials procurement,
while five — Iowa (in Ames), St. Louis,
Wilmington, Beverly (near Boston),
and Tonawanda (near Buffalo) — over-
saw feed materials processing oper-
Chart 4 — Feed Materials Network, January 1945
MANHATTAN DISTRICT
MADISON SQUARE AREA
MURRAY HILL AREA
u
UNION MINES DEVELOPMENT CORPORATION
COLORADO AREA
UNITED STATES VANADIUM CORPORATION
M VANADIUM CORPORATION OF AMERICA
METALS RESERVE CORPORATION
AFRICAN METALS CORPORATION
ELDORADO MINING AND
REFINING COMPANY
VITRO MANUFACTURING COMPANY
IOWA AREA
D
IOWA STATE COLLEGE
ST. LOUIS AREA
MALLINCKRODT CHEMICAL WORKS
WILMINGTON AREA
Lj
E. I. DU PONT DE NEMOURS AND COMPANY
BEVERLY AREA
D
METAL HYDRIDES, INC.
TONAWANDA AREA
LINDE AIR PRODUCTS COMPANY
ELECTRO METALLURGICAL COMPANY
HOOKER ELECTROCHEMICAL COMPANY
HARSHAW CHEMICAL COMPANY
PRINCETON UNIVERSITY
YALE UNIVERSITY
MASSACHUSETTS
INSTITUTE OF TECHNOLOGY
NATIONAL BUREAU OF STANDARDS
Somre: MDH, Bk. 7. \'ol. 1. App. B4, DASA.
310
MANHATTAN: 1 HE ARMY AND THE AlOMIC BOMB
ations. A single area engineer admin-
istered the Iowa and St. Louis offices,
traveling between the headquarters
located at Iowa State College and the
Mallinckrodt Chemical Works. In Wil-
mington, the busy area engineer at
Du Pont kept a check on that firm's
production of feed materials in addi-
tion to overseeing its plutonium pro-
gram. In Beverly, the area engineer
supervised the District's contract for
uranium metal production with Metal
Hydrides, Inc. And in Tonawanda,
the area engineer had responsibility
for contracts with the Linde Air Prod-
ucts Company, a subsidiary of the
Union Carbide and Carbon Corpora-
tion, for production and chemical
processing of uranium oxide into its
dioxide and salt forms and with the
Electro Metallurgical Company for
production of uranium metal; later he
supervised contracts with the Har-
shaw Chemical Company of Cleve-
land, which made uranium tetrafluor-
ide and uranium hexafluoride, and
with the Hooker Electrochemical
Company of Niagara Falls, New York,
which reclaimed uranium from slag
produced in the mining of carnotite
and other ores.^
Feed Materials Procurement
Raw Materials
From 1943 to the end of the war
the Manhattan Project steadily in-
creased its supplies of uranium ore,
to ensure sufficient stores for conver-
sion into the black oxide needed for
the feed materials processing plants.
Ore procurement activities, which
reached a high point in 1944 and
then leveled off somewhat in early
1945, were concentrated in three
major areas: Africa, Canada, and the
United States. Project leaders were
aware in 1943 that the wartime needs
of the bomb program were likely to
exhaust both the immediately avail-
able domestic and Canadian deposits,
and the security implications of this
situation ultimately led to a District
policy of using, to the greatest extent
possible, ore from foreign sources.^
The most significant foreign source
of natural uranium was the Belgian
Congo, where the Belgian mining
firm. Union Miniere du Haut Katan-
ga, controlled all mineral rights. Fol-
lowing negotiations, the District pro-
cured the African ore through Union
Miniere's subsidiary, the African
Metals Corporation. For the period
October 1942 to December 1944, cost
of 30,000 tons of Congo ore contain-
ing 3,800 tons of black oxide totaled
more than $9 million, based on the
price of oxide averaging about $1.12
per pound. The District's Washington
Liaison Office arranged for purchase
of additional Congo ore, containing
more than 3,100 tons of oxide and
costing more than $10 million.^
All Canadian ore, procured through
the Eldorado Mining and Refining
Company (formerly, until June 1943,
^MDH, Bk. 7, Vol. 1, pp. 2.1-6.3 and App. II,
DASA. List, sub: MD Contracts With Various Univs,
Incl to Memo, Marsden to Groves, 2 Nov 43; List,
sub; Signed Prime and Subcontracts Over $100,000,
Incl to Memo, Marsden to Groves, 31 Aug 43. Both
in Admin Files, Gen Corresp, 161, MDR.
6 MPC Rpt, 21 Aug 43, OCG Files, Gen Corresp,
MP Files, Fldr 25. Tab E, MDR; U.S. Engrs Office,
Mad Sq Area, sub: Notes on . . . Ltr to Sen [Edwin
C] Johnson [Colo.], 5 Dec 45, Admin Files, Gen
Corresp, 312.1. MDR.
^ Data on uranium ore purchases in this and sub-
sequent paragraphs based on charts in MDH, Bk. 7,
Vol. 1, Apps. F1-F3, DASA.
THK FEED MA lERIALS PR()C;RAM
311
Eldorado Gold Mines), came from the
Great Bear Lake area. In May 1943,
with completion of Stone and Web-
ster's initial purchase order (15 July
1942), the District negotiated another
contract with a representative of El-
dorado's sales agency in the United
States. But procurement officials soon
experienced serious difficulties in im-
plementing this contract and decided
to terminate it. Colonel Ruhoff,
acting in his capacity as chief of the
newly constituted Madison Square
Area Engineers Office, agreed in Sep-
tember to the terms of a new contract
with Eldorado; he approved a second
agreement in December 1944. For the
period July 1942 to December 1944,
cost of 4,200 tons of Canadian ore
containing 1,137 tons of black oxide
was slightly over $6.6 million, based
on the price of oxide varying from
about $1.95 to over $4.00 per
pound. ^
Domestic sources of natural urani-
um were in the Colorado Plateau
region of the states of Colorado,
Utah, and New Mexico. The uranium
in this region occurred in carnotite
ores, which also contained vanadi-
um— an element urgently needed in
the war effort because of its use as a
hardening agent in the manufacture
of steel. District procurement officials,
learning in late 1942 that those firms
actively mining carnotite ores and re-
fining vanadium did not extract the
relativelv small amount of uranium in
» Ibid., pp. 3.1-3.3 and App. F2, DASA; MPC Min
(and attached documents), 24 Feb 45, OCG Files,
Gen Corresp, MP Files, Fidr 23, lab A, MDR;
Memo, 1st Lt Winston H. Pickett (Intel & Scty Div)
to Groves, sub: Contract Disclosure in Current Ca-
nadian Case (Relating to Ore Supply Prgm in WW
II), 15 Mar 46, Investigation Files, (k-n Corresp,
Boris Pregel, MDR.
the refuse materials, began negotia-
tions in early 1943 to acquire these
tailings. Because these tailings were
in the form of sand, and thus too
heavy for economical shipment, they
arranged contracts with several vana-
dium operators — the government-
owned and -financed Metals Reserve
Corporation,^ the privately owned
and operated Vanadium Corporation
of America, and the United States Va-
nadium Corporation, a Union Car-
bide subsidiary — and proposed they
convert the tailings into concentrates
(sludges). The advantage of the con-
centrates was that they would yield a
higher percentage of uranium for
conversion into black oxide and that,
in this form, shipment to the Buffalo-
area processing firms would be a less
costly operation. For the period No-
vember 1942 to February 1945, cost
of 380,000 tons of carnotite sands
containing 1,350 tons of black oxide
was more than $2.1 million, based on
the price of oxide averaging about
$0.80 per pound. 10
Uranium ore from North America
yielded considerably less black oxide
than that from Africa, primarily be-
^ The Metals Reserve Corporation, a subsidiary of
the Reconstruction Finance Corporation, was estab-
lished under legislation enacted by Congress in
1940, with the objective of providing for purchases
of strategic and critical materials. By late 1944,
Metals Reserve, which Congress had supplied with
adequate funds and power to procure items needed
by war industries and for stockpiling, had spent
some $1.7 billion for 19 million tons of materials.
See Smith, The Army and Economic Mobilization, pp.
203-04.
lOMDH, Bk. 7, Vol. 1, pp. 4.1-4.8, 7.8-7.13,
App. F3, DASA; Memo, Merritt to Nichols, sub:
Resume of Production of Uranium Products for MD
in (Colorado Plateau Area, 26 Jan 45, Admin Files,
Gen Corresp, 410.2 (Uranium), MDR; Rpis, Mat Sec
(later Mad Sq Area Engrs Office), 3 Jul- 13 Aug 43.
OROO.
312
MANHAITAN: THE ARMY AND THE ATOMIC BOMB
cause of the much greater oxide con-
tent of the latter. The African ore
from the Belgian Congo contained an
estimated average of over 2-percent
black oxide, whereas Canadian ore
from the Great Bear Lake area as-
sayed at somewhat more than 0.5 per-
cent and domestic ore from the Colo-
rado Plateau region at 0.25 percent.
For this reason, the combined quanti-
ty of estimated black oxide in urani-
um ore purchased from the North
American sources accounted for only
one-third of the total contracted for
the entire project. ^^
Special Materials
So tremendously important to the
success of the atomic project was se-
curing and processing raw ores that
this operation tended to obscure an-
other significant activity of the Dis-
trict's feed materials program: pro-
curement of special materials. A
number of these materials were diffi-
cult to obtain in the quantities needed
or completely unavilable from com-
mercial sources. Hence, their pro-
curement was often not simply a
matter of District officials approving a
purchase order or letting a contract,
but required planning and imple-
menting means for the radical expan-
sion of such limited sources as existed
or for even approving construction of
entirely new plants. Two separate sec-
tions in the Madison Square Area
Engineers Office had responsibility
for special procurement — the Special
Materials Branch and the Special
Projects Branch. ^^
' » MDH, Bk. 7, \'ol. 2, "Geographical Explora-
tion," pp. 1.6-1.7, DASA.
12 MDH, Bk. 7, Vol. 1, pp. 1.9, 6.1, Apps. B and
G-K (see charts), DASA.
Demands for special chemicals and
other materials of the project's re-
search and production facilities in-
creased rapidly in 1943 and 1944. For
testing and operating atomic piles
there was need for radium and radio-
active lead as a neutron source,
graphite and beryllium as neutron
moderators, and helium as a coolant;
for the heavy water project at Trail,
nickel chromium for a catalyst; for the
gaseous diffusion project, elemental
flourine and a variety of fluorinated
chemicals, including those suitable for
cleaning, cooling, lubricating, and
sealing; for the manufacture of urani-
um metal, magnesium and calcium;
and for the design and test of the
bomb at Los Alamos, a seemingly
endless list of materials — bismuth,
tungsten, boron, beryllium, and many
others.
The quantity and variety of special
materials needed by the project pre-
sented the Madison Square staff with
a whole spectrum of challenging
problems. Some proved to be rela-
tively simple. For example, radium
and radioactive lead, which were by-
products of uranium processing,
could be obtained from the same
firms that refined the ore. In the early
period, project officials purchased
most of the radium required through
the New York firm, Canadian Radium
and Uranium Corporation, which pro-
cured most of its supply from Eldora-
do Mining and Refining. In 1943,
however, difficulties in reaching
agreement on contractual terms and
prices caused them to turn to Joseph
A. Kelly, who acted as agent for the
Radium Chemical Company of New
York. After 1943, Kelly supplied most
THE feb:d materials program
31:
of the radium required by the project.
As for radioactive lead, the District
obtained most of its requirement for
this material from Eldorado Mining's
ore-refming operations at Port Hope,
Ontario. ^^
Acquisition of a suitable pile mod-
erator was one of the most difficult
procurement problems in the early
months of the project's plutonium
program. Pile designers finally decid-
ed to employ graphite rather than
heavy water or beryllium, because it
was the only one of these neutron-ab-
sorbing substances available in quan-
tity from commercial sources and
because Metallurgical Laboratory sci-
entists and researchers at the National
Carbon and Speer Carbon Companies
recently had devised a process that
would produce an adequate supply of
high-grade graphite for the program
This success with graphite did not
however, end interest in obtaining be
ryllium and heavy water for experi
mental purposes. Project scientists
particularly those at Los Alamos
showed an increasing interest in be-
rvllium metal in the later years of the
war. Only a single American firm,
Brush Beryllium Company of Lorain,
Ohio, produced beryllium commer-
ciallv for the fabrication of certain
alloys. From 1943 to 1946, the
Madison Square staff concentrated its
efforts on increasing the production
capacity of this firm, assisting it in ob-
taining priorities on new equipment
and other materials from the War
Production Board and also in expand-
ing its plant. By 1945, these measures
had led to a substantial increase in
production of beryllium metal. ^"^
Generally speaking. District pro-
curement officials had to cope with
no more than the usual stringencies
of the tight wartime economy in ob-
taining moderate quantities of such
elements as magnesium, calcium, bis-
muth, tungsten, boron, and helium.
Because early decisions for helium-
cooled production piles appeared to
forecast a future need for very large
amounts of the gaseous element, they
arranged with the Bureau of Mines,
which controlled helium distribution,
for large-scale procurement, including
transfer directly of funds from the
War Department to Interior to pay
the costs. In 1943, they also assisted
in negotiation of a contract with the
General American Transportation
Company of Chicago for purchase of
special tank cars to ship the helium to
Hanford. But the decision by pile de-
signers later that year to use water as
the primary coolant greatly reduced
the need for helium, and the District
materials group sharply cut back the
earliest procurement schedules for
the element. ^^
Another material that presented
special procurement problems was
elemental fluorine, to include its
chemical derivatives. This highly cor-
rosive, and therefore hazardous-to-
handle, element was the choice of the
project designers for combining with
uranium to make the gaseous feed
material (uranium hexafluoride) for
operating several of the main produc-
'3 Ibid., pp. 6.1-6.3 and Apps. F5-F6, DASA.
'Mbid., App. K, DASA; Rpt, Ruhofl, .sub: Mat De-
velopments for 1 1-27 Oct 42, 27 Oct 42, MD-319.1
(Rpts MSA), OROO; Rpls, Mat Sec (later Mad Sq
Area Kngrs Office), 9 Nov 42, 6 and 13 Aug 43,
OROO: Smvth Report, p. 65.
'^MDH. Bk. 7, Vol. 1, App. I, DASA: List, sub:
Signed Prime and Subcontracts Over $100,000, Incl
to Memo. Marsden to (iroves, 31 Aug 43, MDR.
314
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
tion plants. Because of the huge re-
quirements of just the gaseous diffu-
sion plant, as well as the problems of
shipment, the designers decided to
build a fluorine gas production plant
right at the diffusion plant site. The
District's materials group also played
a significant role in letting contracts
and overseeing the activities of a
number of private research institu-
tions (Johns Hopkins, MIT, Purdue)
and chemical firms (American Cyna-
mid, Du Pont, General Chemical,
Harshaw Chemical, Hooker Electro-
chemical, Kinetic Chemicals, Penn
Salt) in the development and supply
of the numerous fluorinated hydro-
carbon chemical compounds — in the
form of coolants, sealants, and lubri-
cants— needed to operate the plants
safely and efficiently with the highly
corrosive feed material. ^^
Feed Materials Production
The initial phase of the feed mate-
rials production network was conver-
sion of the uranium-bearing crude
ore into pure concentrates of black
oxide and soda salt by various indus-
trial firms under contract to the Dis-
trict. In each case the refining treat-
ment was quite similar and involved
subjecting the crude ore to the suc-
cessive processes of pulverization into
a sandlike material, acid immersion,
precipitation to eliminate impurities,
and roasting (drying).
Eldorado Mining at its Port Hope
refinery processed all Canadian ore
and some Congo ore into black oxide,
whereas the Vitro Manufacturing
Company at its Cannonsburg (Penn-
sylvania) refinery processed only
Congo ore into soda salt. Designed
only for treating the higher-grade
Congo and Canadian ores, neither the
Eldorado nor Vitro plants could
properly process the carnotite con-
centrates from the Colorado Plateau
region. Aware that the Linde Air
Products Company had produced for
the OSRD a satisfactory grade of
black oxide from carnotite concen-
trates, the District's Materials Section
at the end of 1942 made arrange-
ments with Linde to refine new stocks
of concentrates at its plant in Tona-
wanda. New York, as well as to
produce other feed materials for the
project. With assistance of the Tona-
wanda area engineer, Linde expanded
its black oxide production facilities,
but, by late 1943, was phasing out do-
mestic ores and using its facilities to
refine higher-yielding African ores.^"^
Figures compiled by the Madison
Square Area Engineers Office, begin-
ning in September 1943, show that
the amount of uranium from all
sources available for refinement in
the United States and Canada, and
the quantity of black oxide and soda
salt extracted from this ore, grew dra-
matically from 1943 to 1945. Thus, at
the end of September 1943, the Man-
hattan District had available 2,920
tons of uranium ore and produced
1,660 tons of black oxide and soda
salt. A year later, the quantities rose
'«MDH. Bk. 7, \()l 1. App. K, DASA; List, sub:
Contracts To Be laktii Over bv MD, Incl to Ltr. W.
1. W'ensel (lech Aide, OSRD) to Marshall, 20 Mar
43, Admin Files, Gen Corresp, 161, MDR; List, sub:
MD Contracts With \arious Univs, Incl to Memo,
Marsden to Groves. 2 Nov 43, MDR.
'^MDH, Bk. 7, Vol. 1, pp. 1.20, 7.1-7.8, Apps.
C-IA and F7, DASA. Details of earlv development
of black oxide production bv Linde in 1942-43 may
be followed in Rpts, Mat Sec (later Mad Sq Area
Kngrs Office), Oct 42-Aug 43, 30 Oct. 30 Nov, and
31 Dec 43, 29 jan 44, OROO.
THE FEED MATERIALS PROGRAM
315
to 5,640 tons available and 3,500 tons
of black oxide and soda salt pro-
duced. And at the close of September
1945, the figures stood respectively at
6,600 tons of ore and 5,150 tons of
black oxide and soda salt.^^
The final phase in the feed materi-
als production network was the con-
version of black oxide and soda salt,
through a series of chemical treat-
ments, into one of the several chemi-
cal feeds suitable for processing in
the electromagnetic, diffusion, and
pile plants. The first step changed
black oxide or soda salt into brown
oxide (uranium dioxide) or orange
oxide (uranium trioxide), the latter an
important feed material for the elec-
tromagnetic process in its early stages
of development. The second step
transformed brown oxide into green
salt (uranium tetrafluoride). The
third, and final, step converted green
salt into one of a number of uranium
compounds — for example, gaseous
uranium hexafluoride for the gaseous
and liquid diffusion processes and the
electromagnetic process in its last
stage of development — or into urani-
um metal, the prime feed material
for the pile process. ^^
Because the OSRD had made con-
siderable progress in arranging con-
tracts with industrial firms to provide
for each of the different chemical
treatments required to produce feed
materials, the principal task remaining
for Manhattan leaders was that of
shaping the project's feed materials
processors into a production network
capable of supplying most of the
feeds for the Clinton and Hanford
production plants, regardless of the
adverse effects of sabotage, technical
failures, or other inhibiting factors.
By early 1943, having extended
OSRD contracts and negotiated new
agreements, they organized and ex-
panded this network so that, in effect,
it comprised three parallel chemical-
processing chains, the first link in
each chain consisting of processors of
both brown and orange oxide; the
second, those of green salt; and the
third, those of uranium metal. ^^
Mallinckrodt, Du Pont, and Linde
comprised the brown and orange
oxide links. Mallinckrodt, which had
pioneered in development of the
highly efficient ether process for re-
fining uranium under the leadership
of Ruhoff, provided the most impor-
tant link. During the course of the
wartime project, it produced nearly
4,200 tons of brown and orange
oxide, nearly twice the output of the
other two firms, and including almost
all of the oxide used by the electro-
magnetic project. In cooperation with
Yale University, it continued research
that culminated in design and con-
struction of a plant for continuous ex-
traction of brown oxide from raw ore
(pitchblende), not completed until
1946. The Du Pont plant, built adja-
cent to the company's big Chambers
Chemical and Dye Works across the
Delaware River from Wilmington in
Deep Water, New Jersey, processed
»8Rpts, Mad Sq Area Engrs Office, 30 Oct 43,
31 Oct 44, 29 Nov 45, OROO.
19 Ibid., Sep-Dec 43, OROO; MDH, Bk. 7, Vol. 1,
pp. 8.1-10.10, DASA.
^° See Ch. I on the origins in the atomic bomb
program of the idea of parallel production chains,
characterized as a nuclear steeplechase involving
various methods for producing fissionable materials.
List, sub: S-1 Contracts, Incl to Ltr, Irvin Stewart
(Ex Secy, OSRD) to Groves, 14 Dec 45, Admin
Files, Gen Corresp, 161 (S-1 Contracts), MDR;
MDH, Bk. 7, Vol. I, pp. S10-S13 and App. F8,
DASA.
316
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
mainly scrap and by-products material
to produce almost 2,000 tons of
brown oxide. Linde, operating the
third plant, processed black oxide
from its own refinery to produce a
total of about 300 tons of brown
oxide. ^^
Four chemical firms comprised the
green salt links. Fhree were the same
firms that produced brown oxide and
the fourth was the Harshaw Chemical
Company of Cleveland, which the
OSRD had originally brought under
contract to produce green salt in the
summer of 1942. District procure-
ment officials drew up new contracts
for a substantially enlarged output in
the fall of 1942 — with Harshaw in
September and the other three com-
panies in November. These contracts,
except for that with Harshaw, re-
mained in effect for the duration of
the war and resulted in production of
more than 7,200 tons of green salt:
2,926 by Mallinckrodt, 2,060 by
Linde, 1,640 by Harshaw, and 608 by
Du Pont. When more uranium hexa-
fluoride was needed for the diffusion
plants, the Madison Square Area En-
gineers Office renegotiated the con-
tract with Harshaw, providing in a
new agreement that the Cleveland
firm convert black oxide into green
salt and then into uranium hexafluor-
ide. At the same time, the Madison
Square office also arranged to have
Harshaw raise its output of uranium
tetrachloride, which it had been pro-
ducing in small quantities since early
1943, to meet a sudden increase in
demand for the electromagnetic pro-
duction plan.^^
Four commercial firms and a col-
lege formed the uranium metal links.
Mallinckrodt, Du Pont, Electro Metal-
lurgical, Metal Hydrides and Iowa
State, at one time or another, were
involved in metal production for the
wartime atomic project, although only
the first three firms constituted the
permanent links in the parallel feed
materials chains. Uranium metal pro-
curement dated back to the earliest
days of the atomic energy program,
because the material was required for
laboratory research and experimenta-
tion. Both the National Bureau of
Standards and the OSRD had let con-
tracts to university research laborato-
ries and commercial chemical firms to
develop a process for mass produc-
tion of uranium metal of a high
degree of purity. The processes de-
vised by Metal Hydrides proved to
have serious drawbacks. Iowa State,
however, had developed a method for
reducing green salt with calcium
(later, magnesium proved more effec-
tive) at high temperatures inside a
steel bomb and recasting the end
product into metal in an induction-
heated furnace. So successful was this
method that Iowa State itself em-
ployed it to manufacture a consider-
able amount of metal for the project.
Subsequently, the Army let contracts
to Mallinckrodt, Du Pont, and Electro
Metallurgical to produce metal using
the steel bomb method. ^^
When the Army took over direction
of materials procurement, it contin-
ued the metal-production contracts
2» MDH, Bk. 7, Vol. 1, pp. 8,1-8.7, DASA.
22 Ibid., pp. 9.1-9.9 and App. F8, DASA; Rpts,
Mad Sq Area Engrs Office, 31 Oct and 30 Dec 44,
31 Jan 4.5, OROO.
23 MDH, Bk. 7, Vol. 1, pp. 10.1-10.9, DASA. See
al,so Ch. III.
THE FEED MATERIALS PROGRAM
317
with Metal Hydrides and Iowa State
and negotiated new contracts with
Electro Metallurgical and Du Pont. In
several instances, District officials had
to monitor construction of additional
plant buildings, at government ex-
pense, to expedite the production of
uranium metal under these contracts.
Metal Hydrides and Du Pont had seri-
ous operating problems that limited
their output of metal, although Metal
Hydrides subsequently developed a
highly successful metal-recasting op-
eration. Nevertheless, by the time Dis-
trict officials shut down most produc-
tion of new metal in late 1943 — Iowa
State continued its output until late
1944 — the various contractors had
manufactured several thousand tons.
By late August 1944, the Madison
Square area engineer reported deliv-
ery of nearly 3,500 tons of metal to
Hanford and Clinton, comprised of
1,000 tons from Electro Metallurgical,
900 from Iowa State, 650 from Mal-
linckrodt, 610 from Metal Hydrides,
and lesser amounts from other
processors. These deliveries included
both new metal and metal recast
into ingots from turnings and other
scraps from machining and fabricating
operations. ^^
Quality Control Program
One factor that made materials pro-
curement difficult was the almost uni-
versal requirement for previously un-
heard of standards of quality. In the
feed materials program, for example,
procurement schedules required that
uranium metal contain no more than
0.1 of 1 percent of impurities that
would affect its efficiency in the pile-
operating process. Similarly stringent
standards were established for graph-
ite, fluorinated chemicals, and other
materials. Because most of the com-
mercial contractors who furnished
these materials were unprepared to
carry out the physical and analytical
tests necessary to maintain these high
standards, the materials group had to
build up its own quality control
organization.^^
In February 1943, Colonel Cren-
shaw's staff began negotiations with
Princeton, MIT, the chemical section
of the Metallurgical Laboratory, and
the National Bureau of Standards,
with the objective of forming these
research institutions into a central
quality control laboratory group. The
plan was to have the scientists at each
institution analyze and test samples
from the uranium metal production
plants, as well as to devise more ef-
fective methods of metal analysis, to
furnish personnel and facilities when
needed to supplement those of the
manufacturing plants, to investigate
other materials, and to provide gener-
al guidance for the control program.
In addition, the Metallurgical Labora-
tory was to carry out physical tests of
brown oxide and finished metal for
the pile process. Because all of these
institutions already were engaged in
some aspect of analysis and testing of
uranium, the Materials Section simply
supplemented or revised existing con-
tracts with them to provide the neces-
24 Ibid., pp. 10.2-10.9 and .\pp. F8, DASA; Rpt.s,
Mat Sec (later Mad Sq Area Kngrs ORice), Sep-Dec
42 and 31 Aug 45, OROO.
25MDH, Bk. 7, Vol. 1, pp. 12.1 and App. G,
DASA; Rpts, Mat Sec, 15 Feb and 4 Mar 43,
OROO.
318
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
sary organization of the central qual-
ity control laboratory group. ^^
By spring, the Materials Section
had completed satisfactory arrange-
ments with Princeton, MIT, and the
Bureau of Standards. Colonel Cren-
shaw reported in May that these three
institutions were "doing an excellent
job, and have attacked the problem as
a job of commercial analysis, which is
the case." ^^ The Metallurgical Labo-
ratory expressed a preference for car-
rying out its part of the analytical
work under its existing overall re-
search contract, but Crenshaw op-
posed this, because he knew it would
prevent the Materials Section from
exercising direct control over the lab-
oratory's part in the analytical pro-
gram. The reasons why the laboratory
did not want such a contract soon
became apparent: The scientists did
not relish performing routine analysis
and testing of metal samples because
it took time and used facilities they
would rather devote to more original
and challenging research and devel-
opment activities.^®
Colonel Crenshaw arranged a meet-
ing with Richard L. Doan, associate
director of the University of Chicago's
Clinton Laboratories in Tennessee,
and George E. Boyd, chief of the ana-
lytical chemistry group at the Metal-
lurgical Laboratory. The two scien-
tists agreed that the Metallurgical
Laboratory would continue to per-
form routine chemical analysis and
testing of brown oxide and uranium
26MDH. Bk. 7, Vol. 1, pp. 12.1-12.2, D.A,S.A:
Rpts, Mat Sec, 15 Feb and 3 Apr 43, OROO; Coch-
rane, Measures for Progress, p. 383.
" Rpt, Mat Sec, 18 Mav 43, OROO.
28 Ibid., 3 Apr, 4 and 18 Mav, 5 Jun 43, OROO.
metal until the workload in this area
declined. This would occur shortly,
they knew, when Iowa State complet-
ed facilities for quality testing its own
metal output. By fall of 1943, the
other institutions had taken over most
of the routine chemical analytical
work that the Metallurgical Labora-
tory had been doing. The Madison
Square area engineer attested to the
effectiveness of the quality control
program when, at the end of Novem-
ber, he reported to Colonel Nichols
that the feed materials program was
making metal of a higher degree of
purity than any previously produced
by the atomic energy project. ^^
Development of the feed materials
program ahead of the fissionable ma-
terials production and weapon pro-
grams was a matter of necessity, for
the latter were completely dependent
upon an adequate supply of the feed
and other materials essential to their
operation. In less than two years, the
Manhattan District's materials organi-
zation was able to expand the already
existing OSRD program, solving seri-
ous technical problems and securing
the requisite priorities to meet on
schedule the requirements for the re-
search and development, testing, and
start-up in operations of the major
production plants for the manufacture
of fissionable materials. By late 1944
and in 1945, the District could begin
to phase out, or reduce, some aspects
of the program and to give some at-
tention to the postwar requirements
of the atomic energy program.
29MDH, Bk. 7. \'ol. 1. pp. 12.2-12.4, DASA; Rpts,
Mat Sec (later Mad Sq Area Engrs Office), 18 jun
and 30 Nov 43, OROO.
CHAPTER XV
Land Acquisition
During the war the Manhattan Dis-
trict assembled extensive real estate
holdings for its principal installations
in Tennessee, New Mexico, and
Washington State, as well as smaller
tracts for its support facilities in other
places, totaling more than 500,000
acres. Manhattan acquired most of
this land, at least up to the point of
occupancy, during the period Septem-
ber 1942 to August 1943; however,
because of unavoidable legal delays in
closing out procurement of original
sites and recurring demands for addi-
tional space, it continued to be in-
volved in some acquisition activities
through September 1945.^
Land acquisition for the atomic
energy project presented special
problems hitherto never encountered
by War Department agencies in their
World W^ar II real estate procurement
programs. The Manhattan Project re-
quired absolute secrecy and unheard
of speed in acquiring the needed
sites. Yet these essential objectives
were, in fact, inherently self-defeat-
ing, for land acquisition activities
tended to attract widespread public
attention and measures to expedite
quick settlements tended to conflict
with those for maximum secrecv.
Nonetheless, convinced that the ulti-
mate success of the project was at
stake, Manhattan officials persisted in
enforcing strict security measures,
even though the latter produced a
far-reaching tide of local opposition
at the Tennessee and Washington
sites. 2
Clinton Engineer Works
The District's acquisition program
in Tennessee officially began on
29 September 1942,=^ when Under
Secretary of War Robert P. Patterson
approved Maj. Gen. Eugene Rey-
bold's letter directive requesting pro-
curement of land for the Kingston
Demolition Range, so-called for secu-
rity reasons but in January 1943 offi-
cially redesignated the Clinton Engi-
' Site selection for the major Manhattan installa-
tions is discussed in detail in C.hs. III-\'.
^ Smith, The Army and Economic Mobilization, pp.
441-42; U.S. Statutes at Large. 1942, \ol. 36, Pt. 1.
Second War Powers Act, Title II, p. 177; MDH, Bk.
4, \'ol. 4, 'Land Acquisition, Hanford Engineer
Works," pp. 4.19-4.20, DASA.
^ Except as otherwise indicated, facts and figures
pertaining to the Tennessee land acquisition pro-
gram are drawn from MDH, Bk. 1, \'ol. 10, "Land
Acquisition CEW," and from the appendices to that
volume. Figures on the total acreage of the site and
other statistics relating to the acquisition program
are summarized on pp. 2.47-2.49. Many of the doc-
uments pertinent to the program are reproduced in
App. B.
320
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
neer Works (CEW).* (See Map 3.)
Under terms of this directive, the En-
gineers chief had official authorization
to purchase approximately 56,200
acres ^ {Table 2), primarily in eastern
Tennessee's Roane and Anderson
Counties, using money appropriated
from the Engineer Service-Army cate-
gory of available funds.
In anticipation of approval of this
directive, the Engineers' ORD (Ohio
River Division) Real Estate Branch on
28 September had opened a project
office, designated the CEW Land Ac-
quisition Section, at Harriman, a
Roane County town a few miles west
of the site. The ORD staff began im-
mediately to secure for the section
the services of some fifty appraisers
4 Ltr, Robins (Act Chief of Engrs) to CG SOS,
sub: Acquisition in Fee of Approx 56,200 Acres of
Land for Demolition Range Near Kingston, Tenn.,
and 2d Ind (directive approval), Col Marion Rush-
ton (Asst Ex, Office of Und Secy War) to Chief of
Engrs, both 29 Sep 42, Incls to Memo, Col John J.
O'Brien (CE Real Estate Br chieO to Lt Col Whitney
Ashbridge (CE Mil Constr Br), sub: Land Acquisi-
tion in Connection With MD, 17 Apr 43, Admin
Files, Gen Corresp, 601 (Santa Fe), MDR. The town
of Kingston was located about 7 miles southwest of
the site area.
^ Acquisition of ten additional parcels of land, au-
thorized in subsequent directives issued from June
1943 through August 1944, brought the District's
real estate holdings to a total of approximately
58,900 acres. These parcels of land were mostly
small tracts required for the adequate development
and protection of the original site. (See Map 3. ) Sev-
eral tracts were secured to facilitate development of
the transportation network, notably 70 acres in July
1943 for the right of way of a spur track built from
the Southern Railway at Blair south along Oxier
Creek to the north boundary of the original site.
The largest additions were made in 1944, when the
gaseous diffusion plant on the Clinch River at the
western end of the reservation needed more
ground. In April of that year the TVA granted the
District a temporary-use permit for some 279 acres,
and in August the CEW Land Acquisition Section
acquired another 2,800 acres, consisting chiefly of
an elevated area along Black Oak Ridge needed to
improve perimeter security near the gaseous diffu-
sion plant.
for the job of appraising an estimated
800-850 separate tracts. The fact that
division personnel currently were in-
volved in another large-scale acquisi-
tion program for the Dale Hollow
Dam and Reservoir, situated on a
branch of the Cumberland River near
the Tennessee-Kentucky border, com-
pounded the difficulty of their new
task; however, they resolved the prob-
lem by arranging to borrow the ap-
praisers, on a short-term basis, from
several regional Federal Land Banks
and from the Tennessee Valley Au-
thority (TVA) real estate staff In
keeping with War Department prac-
tices of basing appraisals mainly on
an estimate of prevailing property
values as determined by a review of
comparable sales, on interviews with
owners, and on actual physical inspec-
tion of each tract, the appraisers were
able to complete most of the work on
the original site by the end of 1942.^
The directive of 29 September had
authorized procurement of the origi-
nal site by condemnation. This per-
mitted not only immediate acquisition
of those parts of the area needed for
preliminary construction but also ex-
pedited acquisition of properties with
defective titles. On 6 October (effec-
tive 7 October), the U.S. District
Court for the Eastern District of Ten-
nessee, Northern Division, issued an
order of possession at the request of
ORD Real Estate Branch attorneys.
The court took cognizance of the
hardship to landowners facing remov-
* Ltr, Fred Morgan (CEW Land .Acquisition Sec
Proj Mgr) to Joseph G. Colgan (House Mil Affairs
Committee investigator), 6 Aug 43, copy in MDH,
Bk. 1, Vol. 10, App. B2i, DASA; Memo, Marshall to
Groves, sub: Major MD Contracts, 27 Apr 43,
Admin Files, Gen Corresp, 161, MDR; Knoxville Jour-
nal, 4 Feb 43.
LAND ACQUISITION
Table 2 — Land Acquisition at CEW, 1942-1944
321
Date of
Directive
Acreage To
Be Acquired *
Estimated
Cost
Type of Control
Acquired
Use or Purpose
29 Sep 42
56,200
15.1
70
3.73
47.7
62
17
279
.89
.3
.32
425
2,375
$3,500,000
1,750
14,107
400
3,740
14,600
5.100
200
100
170,000
Outright purchase
Outright purchase
Outright purchase
Outright purchase
Outright purchase
Perpetual easement
Outright purchase
Temporary-use permit
from TVA
Perpetual easement
Outright purchase
Temporary-use permit
from TVA
Temporary-use permit
from TVA
Lease or outright
purchase
Original site
For protection and security
Spur track right of way
Channel diversion of Poplar
Creek
Borrow pit
Access road
14 Jun 43
3 Jul 43
15 Jul 43
25 Sep 43
5 Feb 44
3 Mar 44
19 Apr 44
Expansion of facilities
2 Mav 44
4 Aug 44
Access road
28 Aug 44
Security
^ Figures given here represent the amounts estimated in the real estate directive, the sum totaling about
59,500 acres. The actual acreage finally acquired was less, approximately 58,900 acres.
Source: MDH, Bk. 1, Vol. 10, pp. 1.3-1.4, 2.21-2.26, App. Bl, DASA
al on short notice by limiting the gov-
ernment's right of immediate exclu-
sive possession to those sections
where it was "essential to full and
complete development of the
project. . . ." '
The Manhattan District did not take
exclusive possession of any tracts for
construction purposes before 15 No-
vember, although it had exercised
right of entry at many points before
that date. The CEW Land Acquisition
Section requested that owners and
tenants, most of whom were
farmers, be prepared to vacate at
various times between 1 December
1942 and 15 February 1943. In some
''Copies of the condemnation petition, 6 Oct 42,
filed by U.S. Atty James B. Prexier, Jr. et al., and the
order of possession (source of quotation), 6 Oct 42,
signed by Judge George C. Taylor, in MDH,
Bk. 1, Vol. 10, App. G7, DASA.
instances, where immediate vacating
would cause undue hardship, the Dis-
trict permitted landowners to stay on
even beyond the 15 February date.
The effectiveness of this lenient
policy is attested to by the fact that
project officials never had to resort to
a court order to secure eviction of an
owner from the Clinton site.
As soon as the ORD Real Estate
Branch had assembled sufficient data
to meet legal requirements concern-
ing areas needed immediately for
military construction, branch attor-
neys filed declarations of taking. They
filed the first declaration on 20 No-
vember 1942, covering a segment
comprised of 13 tracts. By mid-Janu-
ary 1943 declarations were on file for
184 tracts covering 9,614 acres and,
by May, for 742 tracts constituting
322
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Earm at the 1 ennessek Site, typical of those acquired by the Manhattan District
53,334 acres — or nearly all privately
owned property of the original site.
Meanwhile, during the winter and
spring of 1943, CEW Land Acquisi-
tion Section negotiators had succeed-
ed in obtaining stipulation agree-
ments on more than half the tracts in
litigation. By the end of May, agree-
ments of this type had been worked
out on 416 tracts comprising 21,742
acres. In those cases where the nego-
tiators failed to secure stipulation
agreements, branch attorneys con-
sented to submit them to a jury of
view, an institution provided for
under lennessee law to assist
litigants in reaching agreement on
settlement prices for expropriated
property. The jury, comprised of five
persons named by the Federal District
Court, visited each of the tracts in
contention and then advised new set-
tlement prices uniformly higher than
those established by War Department
appraisers. When the owners were
unwilling to accept even these higher
prices, the government stopped using
this method of settlement.®
The rise of local opposition to the
acquisition program seriously threat-
ened to delay efforts by Department
of Justice special attorneys to quickly
bring the remaining unsettled cases to
trial. Contributing to the opposition
^ Knoxville Journal. 9 Jan 43; Remarks of Congress-
man John Jennings, Jr. ( I enn.), U.S. Congress,
House, Congressional Record. 78th Cong., 1st Sess.,
22 Apr 43, Vol. 89, Pt. 10, pp. A 1 197-99.
LAND ACQllSITION
323
was the Federal District (Court's late-
1942 publication in its registry of the
amounts placed on deposit for ad-
vanced payment to landowners, in
compliance with the declaration-of-
taking procedure. Because these
amounts represented a percentage of
the total valuation of the tracts, the
landowners easily deduced the War
Department's appraised valuation on
the various tracts. The coincidence of
a local political campaign provided
candidates with an opportunity to
promise, if elected, to secure higher
prices than those established by gov-
ernment appraisers. Area newspapers
publicized widely the appraised prices
and the local politicians' comments
and, in general, were hostile to the
acquisition program and its
methods.^
By the end of November, many
landowners were thoroughly aroused.
On the twenty-third, a delegation of
property holders petitioned the
project manager of the CEW Land
Acquisition Section, protesting the
low appraisal prices. That evening
more than two hundred owners met;
they formed a landholders investiga-
tion committee and made arrange-
ments to hire lawyers and appraisers
so that committee members could re-
ceive expert assistance. Taking note
of these developments, a Knoxville
newspaper commented that "the
public of course actually knows noth-
ing in detail of the justice of the pro-
tests being made by these
citizens. . . . We do know that since
everybody else is getting a fair price
for the material and labor which will
go into this Federal project, there is
certainly no justification for these
farmers being singled out for an
economy slaughter." ^°
Dissatisfaction with appraised
values was not the only cause for op-
position. Relocation of more than one
thousand landowners and tenants
with their families proved difficult.
Recent TVA acquisition of much of
the good river bottom farmland in the
vicinity had created a shortage of
available vacant farms, enhanced local
land values, and forced many farm
people to move. Some of the dis-
placed farmers who had moved to the
Clinton site naturally resented having
to move again. Even vacant houses in
nearby towns were at a premium be-
cause of the influx of construction
workers for the new project. Many
landowners lacked sufficient ready
cash to move on short notice. The
War Department had no funds to aid
them and adequate assistance was not
immediately obtainable from other
government agencies, such as the
Farm Security Administration. Even
owners with financial resources found
that the District's deadlines on vacat-
ing did not give them sufficient time
to hire moving vehicles, which were
in short supply in the local area.^^
9MI^H. Bk. 1, Vol. 10, pp. 2.9 and 2.42-2.43,
DAS.A; Knnxville Journal 1, 20, and 25 Nov 42; Fine
and Remington, Corps of Engineers: Construction, pp.
174-84. Numerous examples of local opposition to
War Department land acquisition are presented in
the last-named source.
^° Knoxville Journal. 24 Nov, 25 Nov (source of
quotation), 30 Dec 42; Remarks of Jennings, Congres-
sional Record. 78th Cong., 1st Sess., 22 Apr 43, Vol.
89, Ft. 10. pp. Al 197-99.
I'MDH, Bk. 1, Vol. 10, pp. 2.40-2.42, DASA;
Iclg, Jennings to Secy War, 24 Oct 42, copy in
ibid., App. B2b, DASA; Robinson, Oak Ridge Story,
pp. 2() and 28.
324
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Rumors contributed considerably to
fomenting local opposition. One per-
sistent rumor was that the Clinton
site was being acquired for the benefit
of a large private corporation in fla-
grant abuse of the right of eminent
domain. But overriding security re-
quirements prevented District officials
from providing the public with a gen-
eral explanation. Thus, in an attempt
to abate public criticism. Col. John J.
O'Brien, chief of the CE (Corps of
Engineers) Real Estate Branch, re-
quested that the Department of Agri-
culture investigate the appraisal pro-
gram. The department's factfinders
later stated in their report that "the
general management of the project,
the appraisal of the land and the ap-
proach to the landowners have been
fair and just, and we do not see what
would be accomplished by a reap-
praisal of the land." The Engineers'
resurvey of the area had revealed,
they continued, that in many in-
stances the tracts were actually small-
er than recorded in existing property
deeds; that the owners had tended to
overvalue their land because they
were prone to exaggerate its produc-
tivity; and, because many were veter-
ans of one or more of the five previ-
ous TVA land acquisition projects
within 70 miles of the Clinton site,
that they had developed "a technique
of complaining" that had proved to
be very effective in securing higher
prices for their property. ^^
Meanwhile, disaffected farmers
sought the assistance of their con-
gressman, John Jennings, Jr., a Re-
publican from Knoxville. As early as
October 1942, Jennings had written
to Secretary Stimson on behalf of his
constituents: "I realize the necessity
of the step taken but I do hope ade-
quate steps will be taken to safeguard
these people, that they speedily be
paid for their farms, and every step
possible be taken to see that they are
relocated on farms." ^^ Although the
War Department promptly had as-
sured him "that every effort will be
made to preserve the interests of the
landowners concerned," ^"^ the pro-
tests continued to increase. Feeling
the futility of his earlier efforts, Jen-
nings submitted a resolution to the
House of Representatives on 1 Febru-
ary 1943, requesting creation of a
select committee to investigate the
prices offered landowners. "A large
number of owners . . . ," the resolu-
tion read, "assert that the War De-
partment has had the land appraised
by nonresidents of the State of 1 en-
nessee who are totally unfamiliar with
the value of such land. . . . Inexpert
and unfair appraisals . . . are result-
ing in the forced sale of such land
... at prices totally inadequate to
enable the former owners to acquire
homes and farms of comparable
value." ^^
The House took no immediate
action on Jennings' resolution, and he
continued to seek relief for his con-
stituents through War Department
'^Mcmo, George K. Fairell (Agri Dept specialist)
to O'Brien, sub: Kingston Demolition Range,
19 Feb 43, topv in MDU, Bk 1, Vol. 10, App. B2e,
DASA.
"Ltr, Jennings to Secv War, 17 Oct 42, copy in
ibid., App. B2a, DASA.
'"Ltr (source of quotation), John W. Martyn
(Admin Asst to Secy War) to Jennings, 27 Oct 42,
App. B2a; Telgs, Jennings to Secy War, 24 Oct 42,
and I'nd Secv War to Jennings, ,S Nov 42, App.
B2b. Copies in ibid., DASA.
'^Quotation from //. Res. 91. Congressional Record,
78th Cong., 1st Sess., 1 Feb 43. Vol. 89, Ft. 1, p.
508. See also Remarks of Jennings on //. Res. 91.
ibid., 2 Feb 43, p. 509; Knoxville Journal. 4 Feb 43.
LAND ACQUISITION
325
channels. In late February, he in-
formed Under Secretary of War Pat-
terson that he was receiving numer-
ous complaints of destruction of
buildings and other facilities on the
site before providing owners the
usual opportunity to salvage them.
Patterson replied that such salvage
was not feasible because it would take
too long and interfere with construc-
tion activities already in progress.
Furthermore, he assured Jennings, no
waste was involved because Manhat-
tan District engineers were converting
existing buildings on the site for use
by the project wherever this was pos-
sible. Again in April, Jennings com-
plained to Corps of Engineers offi-
cials that improper statements
concerning landowners were being
made by their personnel in testimony
before the jury of view. Corps observ-
ers who had attended the jury hear-
ings said the congressman's allega-
tions were not true. Finally, on 9 July,
Chairman Andrew J. May of the
House Military Affairs Committee, to
which the resolution had been
referred for review, appointed Re-
presentative Clifford C. Davis, a
Democrat from the Tenth District of
lennessee, to carry out an inquiry.
Davis selected Representatives Dewey
Short, a Republican from Missouri,
and John Sparkman, a Democrat from
Alabama, as members of an investi-
gating subcommittee and also invited
Jennings to be present at the subcom-
mittee's public hearings. ^^
Announcement of the pending in-
vestigation came while the Justice De-
partment special attorneys were push-
ing ahead with trial of condemnation
cases on the Clinton tracts. The fed-
eral court juries, almost without ex-
ception, substantially increased pay-
ments to property holders. This
seemed to further confirm the pre-
vailing local view that the original ap-
praisals were far too low and farmers
who had accepted payment ought to
be entitled to supplementary compen-
sation. After consulting with Manhat-
tan officials, the Justice Department
decided to suspend further trials, at
least temporarily, as the congressional
investigation might result in a major
revision of the appraisal data upon
which the government was basing its
prosecution of condemnation cases. ^"^
The War Department determined
to adhere to a policy of full coopera-
tion with the congressional investiga-
tors. The ORD division engineer in-
structed the CEW project manager to
take "extreme care ... to prevent
adverse reaction because of any
claims being made that the War De-
partment is pursuing a non-coopera-
tive policy." ^® Manhattan officials did
not interfere when a subcommittee
investigator interviewed landowners
who had written letters of complaint.
The CEW project manager responded
promptly to a written request from
the House Military Affairs Committee
general counsel for a comprehensive
'*I.tis, Jennings to Und Secv War, 27 Feb 43,
t'nd Secy War to Jennings, 13 Apr 43, and Lt Col
C. C. Fletcher (Act Real Estate On for ORD Div
Engr) to Rev bold, sub: l.tr of Jennings Re Alleged
Improper Statements of J. H. McKenzie (Just Depi
Spec Altv), 15 Apr 43, copies in MDH, Bk. 1, Vol.
10, App. B2d-e. DASA. See also ibid., pp. 2.11-
2.12, DASA; Knoxville Journal. 10-11 Jul and 13 Aug
43.
I'' 1st Ind, Fletcher to Morgan, 13 Jul 43, to I.tr,
Morgan to ORD Div Engr, sub: Investigation of Ap-
praisals bv (^{jngressional Investigating Committee,
12 Jul 43, copies in MDH, Bk. I, Vol. 10, App. B2h,
DASA.
'« Ibid.
326
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
statement of its functions and activi-
ties, including a list of the appraisers
who had worked on the project, to-
gether with a description of their
qualifications; however, he did not re-
lease any records to the subcommit-
tee without approval of the ORD divi-
sion engineer. ^^
The subcommittee held two public
hearings: on 1 1 August at Clinton, for
the benefit of Roane County resi-
dents; and the following day at Kings-
ton, for Anderson County residents.
About three hundred persons, mostly
land owners and their families, at-
tended at Clinton, but considerably
fewer were present in Kingston. The
CE Real Estate Branch head sent his
chief appraiser and an officer to rep-
resent the Engineers chief. General
Reybold, at the hearing; the ORD di-
vision engineer, also his chief apprais-
er; and the district engineer, the CEW
project manager. 2°
At Clinton, Congressman Jennings
reviewed the history of the acquisi-
tion, emphasizing particularly the
landowners' complaints that they had
been underpaid for properties taken
over by the government and, as a
final comment, declaring that all of
his own efforts to have the War De-
partment reconsider appraisals had
been turned down "as cold as ice." ^^
In subsequent testimony. War Depart-
ment officials, disgruntled landown-
ers, and project appraisal staff mem-
'^ Ibid.; Ltrs, Colgan (for H. Ralph Burton,
House Mil Affairs Committee general counsel) to
Morgan, 3 Aug 43, and Morgan to Colgan, 6 Aug
43, copies in MDH, Bk. 1, Vol. 10, App. B2i, DASA.
2° The town of Clinton was located 4 miles north-
west of the site. Ltr. Col R. G. West (Ex OIT, ORD)
to Reybold, sub: Investigation of C^KW Land Acqui-
sition at Harriman, Tenn., 30 Aug 43, copy in
MDH, Bk. 1, Vol. ip, App. B2m, DASA.
2> Ibid.
bers asserted that appraisers had
greatly undervalued most properties,
failed to interview owners, and used
coercion in getting stipulations. Some
witnesses charged that the CEW
project manager had promised
owners they would have an opportu-
nity to salvage their buildings and
equipment, but they were not permit-
ted to do this. The ORD chief ap-
praiser took the tack in his testimony
that if the appraisers and negotiators
had done all that was alleged by the
landowners, they were acting contrary
to all instructions issued by General
Reybold. He urged that the apprais-
ers and negotiators be given a hear-
ing, but only two witnesses represent-
ing this group were called to testify,
and they both vehemently denied
most of the charges that had been
made against them. The subcommit-
tee adjourned on 12 August, after
hearing testimony from Anderson
County owners at Kingston. ^^
Ihe congressional committee did
not make its report public until De-
cember. The report consisted chiefly
of ten recommendations for improv-
ing War Department real estate acqui-
sition practices, only two of which re-
lated specifically to the CEW pro-
gram, ihe first stated that the War
Department should review and make
adjustments in all those cases at the
Clinton site where "the landowner
was persuaded, against his better
22 Ltrs, Morgan to Fletcher, subs: Rpt on Hearing
Before House Mil Affairs Subcommittee in Connec-
tion With Land Acquisition at Harriman, lenn.,
1 1 Aug 43, and Rpt of House Mil Affairs Subcom-
mittee—CEW, 13 Aug 43; Ltr, West to Reybold,
sub: Investigation of CEW Land Acquisition at Har-
riman, 30 Aug 43. Copies of all in MDH, Bk. 1, Vol.
10, App. B2q and m, DASA. Knoxmlle Xeit's-Sentmel,
12-13 Aug 43. Knoxxnlle Journal, 12-13 Aug 43.
LAND ACQLJISI I ION
327
judgment, by coercion, threat, or
promise, for whatever reason or rea-
sons, to accept less than the true
vakie of his property." Ihe second
recommended that "landowners who
suffered losses on standing crops
. . . for any reason not attributable
to the landower, should be properly
compensated for said losses." The
rest of the recommendations, taken as
a group, constituted a critique of War
Department acquisition policies in
general. More care should be taken to
ensure protection of landowners' con-
stitutional rights as guaranteed under
the Fifth Amendment. In ascertaining
fair prices on land, the government
real estate appraisers should give
more attention to determining
comparable land values and take into
consideration all factors relating to
relocation of the owner on property
similar to that he had given up. To
make sure that these objectives were
achieved. War Department real estate
agencies should employ only fully
qualified appraisers and negotiators.
The Corps of Engineers' real estate
manual should be revised to cover
unusual conditions, such as those
found at the Clinton site. Finally, no
promises or commitments should be
made to property holders, except
where they could be made a matter of
written official record. ^^
Save for a brief delay in prosecut-
ing the condemnation cases, the con-
gressional investigation interfered
very little with land acquisition
progress and not at all with construc-
tion of the U-235 production facili-
ties. Nothing came of the committee's
rather severe criticism of appraisal
prices, as neither Congress nor the
War Department took steps to give
additional compensation to landown-
ers whose property had been acquired
under stipulation agreements. By
August 1944, all of the original
56,700-acre site had been acquired.
As finally constituted, it consisted of
806 tracts secured by purchase, 38
tracts held under easements, and 4
tracts obtained under TVA tempo-
rary-use permits. In September, three
months after closing down oper-
ations, the CEW Land Acquisition
Section reopened its Harriman office
to monitor the additional acquisition
of approximately 2,800 acres. Needed
to ensure greater security of the gase-
ous diffusion plant, this acquisition
involved negotiations on 41 separate
tracts and was not completed until
March 1945.^4
Total cost of the CEW real estate
acquisition program cannot be deter-
mined, because project records list
administrative charges as part of the
overall expenditures for engineer
military activities. The actual sum
paid out for purchase of land and im-
provements, for severance damages,
and for certain other nonadministra-
tive costs totaled slightly more than
$2.6 million, substantially less than
the estimated cost of $3.5 million in
the original directive of 29 September
1942. Of the total, the Army expend-
ed the largest part, $2.58 million, in
2^ The recommendations were printed in the
Kno.willf /oiirnal on 6 Dec 4!3. Comments deiending
War Department procedures as they related to each
of the recommendations are given in MDH, Bk. 1,
Vol. 10, pp. 2.12-2.16 and App. F5, DASA. See also
I .S. Armv CE Real Estate Manual. 1942.
24 MDH, Bk. 1, Vol. 10 pp. 2.45-2.46 and App.
E1-E4, DASA; Ltr, Robins (Dep Chief of Engrs) to
CG ASF, sub: Acquisition of Additional Land for
Sctv Purposes in K-25 Area, 28 Aug 44, copy in
ibid., .App. Blf, DASA.
328
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
outright acquisition of slightly more
than 55,000 acres, purchased at an
average cost of about $47 per acre.^^
Los Alamos
Although the size of the Los
Alamos site approached that of the
Clinton site, its acquisition presented
far fewer problems for the CE Real
Estate Branch. Federal agencies al-
ready owned and controlled 90 per-
cent of the land needed for the site,
and for this the War Department had
only to negotiate a comparatively
simple transfer agreement with each
agency. Furthermore, because a rela-
tively small number of private owners
held title to the remaining parcels,
branch officials anticipated that nego-
tiations with individual owners would
be a far less time-consuming oper-
ation than at the Tennessee site.^^
On 25 November 1942, Under Sec-
retary of War Patterson approved a
directive to acquire a site at Los
Alamos "for establishment of a Dem-
olition range." In support of his re-
quest for approval of this acquisition,
the Engineers chief had submitted
data derived from two comprehensive
preliminary reports — one prepared by
the division engineer of the South-
25 Ibid., p. 2.47, DASA: Ltr. W. T. Brooks (State
of Tenn Hwv Engr) to ORD Div Engr, 8 Jul 43; Ltr,
West to Brooks, 3 Sep 43; Ltr, J. W. Love (Harri-
man Power Dept Mgr) to Sen Tom Stewart (Tenn.).
10 Jan 44; Ltr, Robins to Sen Kenneth D. McKellar
(Tenn.), 11 Feb 44; 1st Ind, O'Brien to ORD Div
Engr, 25 Jul 44, to Ltr, Fletcher to Revbold, sub:
Edgemoor Bridge and Solway Bridge, Tenn., 17 Jul
44. Copies of all in ibid., App B2f and n-o, DASA.
Robinson, Oak Ridge Story, pp. 26 and 28. Some
3,720 of the total 58,900 acres brought under CEW
control already were owned by the government or
were acquired bv lease, easement, or use permit.
26MDH, Bk, 8, Vol. 1, "General," pp. 3.5-3.6,
DASA. Selection of the Los Alamos site is discussed
in detail in Ch. IV.
western Division (SWD) at Dallas,
Texas, and the other by that divi-
sion's district engineer at Albuquer-
que, New Mexico. These reports indi-
cated that the Manhattan Project re-
quired approximately 54,000 acres,
most of it semiarid forest and grazing
lands located on the east slopes of the
Jemez Mountains in Sandoval County.
Cost of acquisition, the reports esti-
mated, would be small, because all
but about 8,900 acres were federally
owned and the grazing and forest
lands were of relatively low value.
The directive set the approximate
cost at $440,000 and authorized the
Engineers chief to finance the acquisi-
tion from available engineer funds. ^'^
Because the process of acquiring
the Los Alamos site promised to be
relatively uncomplicated and speedy,
there was little need for establishing a
special real estate project office. The
SWD Real Estate Branch in Albuquer-
que had sufficient staff and resources
to oversee the myriad details and the
district engineer had assigned one of
his assistants, Maj. John H. Dudley, to
coordinate and supervise all phases.
Working closely with Lt. Col. John M.
Harman, the Los Alamos post com-
mander designate, the Albuquerque
real estate staff took immediate steps
to implement the plan to purchase
2^ Quoted phrase from Ltr, Robins (for Chief of
Engrs) to CO SOS, sub: Acquisition of Land for
Demolition Range at Los Alamos, N.Mex., and 2d
Ind (directive approval), Patterson to Chief of
Engrs, both 25 Nov 42, Incls to Memo, O'Brien to
Ashbridge, sub: Land Acquisition in Connection
With MD, 17 Apr 43, MDR. See also Prelim Real
Estate Rpt, SWD Div Engr, sub: Los Alamos Proj,
21 Nov 42, Admin Files, Gen Corresp, 319.1 (Rpts),
MDR; Rpt, L.S. Engrs Office, Albuquerque Dist,
sub: Proposed Site for Mil Proj at Los Alamos
Ranch School, Otowi, N.Mex., 23 Nov 42, Admin
Files, Gen Corresp, 600.03, MDR.
LAND ACQL ISniON
:529
^■^1
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ■ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
" ^^B^^^^HHI^^^^H
u....->^.- ' ^
BHB^^''
'^k. * -■' ■ "i > k. ■"
"■•i^L ' ..*. '*■ -
Typical 1 errain of the Los Alamos Site
the site in five separate sections (A, B,
C, D, and E), which ensured comph-
ance with the War Department's
pohcy of taking possession of prop-
erty only as it was actually needed.^®
{See Map 3.)
Area A comprised a large block of
land at the center of the site, which
include the fifty-odd buildings and ex-
pansive campus grounds (several hun-
dred acres) of the Los Alamos School
that the Army acquired first and had
full title to by early 1943 under terms
of a $350,000 direct-purchase con-
tract. The other areas — Area E to the
north of Area A and Areas B, C, and
D to the south — formed a kind of se-
curity belt to protect the central facili-
ties planned for Area A, and also as-
sured the Armv control over the
scarce existing water sources. ^^ The
largest tract in these areas comprised
a part of the Santa Fe National Forest
under jurisdiction of the Department
of Agriculture's Forest Service. In re-
sponse to Secretary Stimson's re-
quest. Agriculture Secretary Claude
Wickard authorized the War Depart-
ment "to occupy and use for so long
as the military necessity continues
. . ." an area of some 45,667 acres.
Colonel Harman and the Forest Serv-
ice's regional forester at Albuquerque
worked out the details of the transfer,
including administration or termina-
tion of any rights and privileges
granted local residents and provision
for management and fire protection
MDH, Bk. 8, \()l 1. pp 7 11-7.12, DASA.
2^ Detailed data pertaining to the water supply
problem at I.os Alamos can be found in Admin
Files, (kn Clorresp. 671.1 (Water Supplv), VIDR.
LOS ALAMOS SITE
New Mexico
1943 - 1945
Contour Interval In feet
0 2
MILES
MAP 5
AND ACQlISniON
331
of the forests. Subsequently, the SWD
Real Estate Branch secured several
additional small tracts of public land
to meet the project's needs for a 25-
mile power line right of way, bringing
the total acquisition at Los Alamos
during the war to 45,737 acres. Final
cost of all property at Los Alamos
purchased outright, leased, secured
bv easement, and otherwise acquired
dunng the war was $414,971.3°
Hanford Engineer Works
Although the District's real estate
acquisition program in south central
Washington started in February 1943,
adjudication of land cases resulting
from it ran on for many months after
the war was over.^^ Legal complica-
^° Compton, Atomic Quest, p. 129; Groves, Xow It
Can Be Told, p. 67; Memo, Dudlev to (iroves, sub:
Cooperative Arrangements With Other Govt Agen-
cies, 13 Jan 43, Admin Files, Gen Gorresp, 380.01,
MDR; MDH, Bk. 8. Vol. 1, pp. 2.7, 3.3-3.6, 5.15-
5.21, DASA; CE Constr Div, Map of Los Alamos
Demolition Range, 6 Aug 43, copy in ibid., App.
A3, DASA; Ltrs, Secy War to Secy Agri, 22 Mar 43,
and Secy Agri to Secy War, 8 Apr 43 (source of
quotation), and Memo of I'nderstanding Between
Harman and Frank C-. W. Pooler (Region 3 forester,
Albuquerque), 22 Mar 43, copies in ibid., Apps. D2-
D8 and F, DASA. See Ch. XVIII on the acquisition
of a right of way for a connection with the Berna-
lillo-Santa Fe line of the New Mexico Power Com-
panv and SWD map of power transmission line in
ibid,. App. 5, DASA.
^^ For detailed accounts of land acquisition at
Hanford see MDH, Bk. 4, Vol. 4, DASA; Du Pont
Constr Hist, Vol. 1, pp. 11-13. HOO; Groves, Xow
It Can Be Told, pp. 75-77; I.tr, Gavin Hadden
(Constr Div, OCE) to O'Brien, sub: Hist of Land
Acquisition, HEW, 30 Jul 45, and Incls, Admin
Files, Gen Gorresp, 601 (Hanford), MDR; Ltr,
Robins (Act Chief of Engrs) to CG SOS, sub: Acqui-
sition of Land for Gable Proj, Pasco, Wash., 8 Feb
43, and 2d Ind (directive approval), Patterson to
Chief of Engrs, 9 Feb 43, Incls to Memo, O'Brien to
Ashbridge, sub: Land Acquisition in (connection
With MD, 17 Apr 43, MDR. The term Cable, men-
tioned in the above directive, referred to one of the
most prominent topographical features of the Han-
ford site. Gable Mountain. On a{)j)roval of the site
tions, unfavorable publicity, adminis-
trative difficulties, the possibility of
congressional inquiries, and the usual
local opposition all threatened to
frustrate the combined efforts of Gen-
eral Groves and the Hanford Area
Engineers Office and CE Real Estate
Branch staffs. Only by instituting the
most vigorous countermeasures, both
at the Hanford Engineer Works
(HEW) and in Washington, D.C.,
were they able to prevent serious
delays in Du Font's construction ac-
tivities and major violations of project
security.
On 9 February, Under Secretary of
War Patterson approved a letter di-
rective (dated 8 February) authorizing
acquisition of more than 400,000
acres at the Hanford site. {See Map 4.)
Shortly thereafter, the PD (Pacific Di-
vision) Real Estate Branch established
a local project office, designated the
HEW Land Acquisition Office, in
Prosser, county seat of Benton
County. Branch attorneys immediately
requested an order of possession
from the U.S. District Court for the
Eastern District of Washington State,
Southern Division, and District Court
Judge Lewis B. Schwellenbach on the
twenty-third issued the order, open-
ing the way for the project real estate
office to begin collection of specific
appraisal data and to gain right of
entry to the site. Almost all of the
land was being used for crops or
grazing. More than 88 percent (about
bv Du Pont and the Metallurgical Laboratory see
Ltr, Roger Williams (TNX Div chief, Du Pont) to Lt
Col Franklin I. Matthias (Hanford Area Engr),
2 Feb 43, Admin Files, Gen Gorresp, 601.1 (Han-
ford), MDR, and Memo, Complon to Maj Arthur V.
Peterson (Chicago Area Engr), sub: Safe Distance at
Area 100, 1 Feb 43, Admin Files, Gen Corresp,
600.12 (Projs and Prgms), MDR.
332
MANHATIAN: THE ARMY AND IHE A lOMIC BOMB
378,000 acres) was sagebrush range
land interspersed with volcanic out-
croppings, where some eighteen
thousand to twenty thousand sheep
grazed during winter and spring.
Some 1 1 percent (almost 49,000
acres) was farmland, much of it irriga-
ble but not all under cultivation. Less
than 1 percent (under 2,000 acres)
consisted of town plots, rights of way,
school sites, cemeteries, and similarly
used land, most of it in or near the
three small communities of Richland,
Hanford, and White Bluffs. ^2
More than one-third of the Hanford
area was government owned: federal
government, nearly 71,000 acres;
Washington State, over 45,000 acres;
and five local counties (Benton,
Yakima, Grant, Franklin, and Adams),
about 41,000 acres. Railroad compa-
nies (chiefly the Chicago, Milwaukee,
St. Paul and Pacific) owned almost
46,000 acres. More than 225,000
acres belonged to private individuals
or to corporate organizations, includ-
ing over 6,000 acres owned by several
irrigation districts.
The overall plan called for division
of the site into five areas. The PD
Real Estate Branch chief designated
areas A, B, C, D, and E in accordance
^2 Statistics in this paragraph and the one that fol-
lows on the classification and utiHzation of land
making up the Hanford site have been drawn from
MDH, Bk. 4, Vol. 4, pp. 2.4-2.8, 3.1-3.3, Apps. A
and C, DASA. The figures cited appear to be based
upon a thorough analysis of the various sources re-
lating to real estate acquisition, including Corps of
Engineers maps, the real estate directives, and a
summary of land acquisition issued in December
1946. Other sources consulted, most of them based
on data collected while the acquisition program was
in progress, reveal considerable discrepancy in the
statistics given for ownership and utilization of the
Hanford area in 1943 as compared with the data
given in the MDH. See, for example, OCK, Basic
Data on HEW, Pasco, Wash., 19 May 43, pp. 1-9,
Admin Files, Gen Corresp, 601.1 (Hanford), MDR.
with their anticipated use and in rela-
tion to how they would be ac-
quired.^^ Area A, a tract averaging
about 14 miles in diameter at the
center of the site, would be the loca-
tion of the main production facilities
and would be purchased outright be-
cause, for safety and security, all per-
sons not involved in plant operations
would eventually have to be cleared
from the area. Area B, a safety belt
averaging 4 miles in width, surround-
ed Area A and would be leased, with
any owners who remained on it sub-
ject to eviction on short notice. Area
C, two narrowly connected parcels in
the southeast corner of the site con-
stituting a protective zone for Rich-
land, the operating village, and for
the nearby support installations for
the plutonium production plants in
Area D, would be leased or purchased
as necessary. Most of Area D, lying
immediately west of the Columbia
River and adjacent to the village site,
would be purchased. Finally Area E,
two small appendages athwart the
river at the northwest corner of the
site and comprised principally of
lands in an irrigation district, would
be acquired only to the extent nec-
essary for project security and
operations.
In one very important respect the
Hanford acquisition program differed
from those at Clinton and Los
^^ Analysis of the plan based on Ltr, Robins to
CG SOS, sub: Acquisition of Land for Gable Proj,
Pasco, Wash., 8 Feb 43, Incl to Memo, O'Brien to
Ashbridge, 17 Apr 43, MDR; Groves, Xow It Can Be
Told. pp. 75-76; MDH, Bk. 4, Vol. 4, p. 2.2 and
App. A (maps), DASA; Memo, Norman G. Fuller
(Act HEW Real Estate Proj Mgr) to Landowners in
Hanford Engr Proj, 23 May 43, copy in ibid., App.
Cll, DASA; Du Pont Constr Hist, Vol. 1, pp. 11-
12, HOO.
LAND ACQl'ISniON
333
Alamos. PLxcept for procuicnicnl of
certain Icey tracts rccjiiircd for prelimi-
nary construction activities, the PD
Real Estate Branch had considerably
more time in which to acquire the
site. In February 1943, research,
design, and procurement activities for
the plutonium production facilities
barely had begun, and both the Army
and Du Pont considered large-scale
construction before summertime
highly unlikely. Ihis meant that clear-
ing construction areas would not have
to begin for a period of nearly six
months. Project officials therefore de-
cided to follow an acquisition proce-
dure that they hoped might help limit
the inevitable rise of local opposition.
Branch attorneys delayed issuance of
the usual declarations of taking, while
HEW Land Acquisition Office nego-
tiators endeavored to secure as many
tracts as possible by direct purchase,
the procedures for which had been
made easier in January as a result of
changes in the regulations authorizing
higher initial payments to landowners.
Both Justice Department attorneys as-
signed to the acquisition project and
HEW officials were hopeful that the
direct purchase procedure would
result in more settlements out of
court. They were also hopeful that,
because direct purchase would allow
farmers more time to harvest mature
crops, it would counter the public
criticism bound to arise from the ap-
parent adverse effects of acquisition
on the current national program for
production of more "food for
victorv".^"*
34MDH, Bk. 4, Vol. 4. pp. 4.2 and ,5.1. DASA;
droves, Xmv ll Can Bi- lold. pp. 7(")-77; Matthia.s
Diarv, 12 Mar 4.S. OROO.
Bv earlv March, the HEW Land Ac-
(juisition Office was ready to com-
mence with site acquisition. In coop-
eration with the PD Real Estate
Branch and the Hanford area engi-
neer, Lt. Col. Franklin \ . Matthias,
the office hired a large staff of ap-
praisers and negotiators from nearby
states, many previously employed by
the Federal Land Bank at Spokane,
and in April opened a branch office at
Richland to ensure closer liaison with
the area engineer's staff and Du Pont
officials. Matthias kept a careful eye
on the office's activities, keeping in
close touch through the PD Real
Estate Branch liaison officer in his
headquarters. He worked zealously
for more efficient management of the
acquisition process, adherence to
proper procedures in transfer of land
to the area office before occupancy by
Du Pont personnel, and just treat-
ment for the landowners. Whenever
practicable, he approved the requests
from those individual farmers who
had to vacate but who wanted to
remain on their farms past the im-
posed deadlines so that they could
harvest the matured crops.
The HEW Land Acquisition Office
acquired the first tract on 10 March
1943. During the spring and summer,
acquisition and vacating of specified
areas progressed reasonably well, al-
though in early July the area engineer
had to arrange for court eviction of
seven holdout landowners whose con-
tinued presence in Area A threatened
project security and obstructed land
needed immediately by Du Pont. In
early August, General Groves, Colo-
nel Matthias, and CE Real Estate
Branch officials met with representa-
tives of the Justice Department and.
334
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
seeking to avoid prolonged litiga-
tions, agreed upon certain changes in
acquisition plans, including a revision
in procedures for procuring lands
held by irrigation districts. ^^
But the early progress was decep-
tive, and the holdout and irrigation
district litigation problems were
straws in the wind of rising opposi-
tion. After two of the irrigation dis-
tricts had initiated legal steps to
secure compensation for their bonded
indebtedness, they became rallying
points for other dissatisfied elements.
United in a common cause, the pro-
testers joined together to complain
that the government's real estate
valuations were much too low and its
advance allowances to owners
inadequate. ^^
The crucial point of disagreement
between the Hanford farmers and
project appraisers was the question of
how much compensation the land-
owners should receive for the crops
(cherries, apples, pears, peaches, and
other kinds of fruits, as well as aspar-
agus, mint, and alfalfa) on their land
at the time of acquisition. Many
^^ Memos, Matthias to Groves, sub; Crop Control
and Disposal, HEW, 21 Aug 43, and O'Brien to
Groves, sub: Revision of Boundaries of Area A,
3 Aug 43, Admin Files, Gen Corresp, 601.1 (Han-
ford), MDR; Matthias Diarv, 5 Jul and 7 Aug 43,
OROO.
^^ Memo, Hadden to Groves, sub: Rpt on Trip to
HEW (21 Nov-4 Dec 44), 4 Dec 44, Admin Files,
Gen Corresp, 601.1 (Hanford), MDR. This memo,
with its accompanying inclosures, constituted a de-
tailed report on the historv and status of the pro-
gram. MDH, Bk. 4, Vol. 4, pp. 4.1-4.2, DASA. Res-
olution of John Lindblad Post No. 71, American
Legion, White Bluffs, Wash., 21 Apr 43, Admin
Files, Gen Corresp, 601.1 (Hanford), MDR. Copies
of this resolution, which was typical of the form that
protests against the acquisition took, were sent to all
members of the Washington State delegation in
Congress and to the national headquarters of the
American Legion.
owners contended that if they were
not to be permitted to stay on their
land until crops could be harvested,
they should be compensated for
them, as well as for the land itself.
Because the growing season for 1943
proved to be one of the most bounti-
ful on record, the farmers' claims
were greatly strengthened. By late
spring, no longer able to ignore the
crop question, the PD Real Estate
Branch agreed to a proposal made by
Justice Department attorneys that all
tracts not yet acquired be reappraised
to include crop values at the date of
their taking. ^^
Project security and construction
requirements made necessary the
clearing of many of the farms before
their crops could be harvested. Fur-
thermore, on all the farms eventually
taken over by the project, the Han-
ford area engineer had to provide for
continued maintenance of the or-
chards and the preservation of the ir-
rigation systems. For this purpose
Matthias was able to work out ar-
rangements for bringing prisoners
from the McNeil Island Penitentiary, a
federal institution located near
Tacoma, to serve as a semipermanent
agricultural work force. While this
saved many crops, it did not fully pla-
cate the landowners' frustration, pri-
marily because the government
agency supervising the prisoners, the
Federal Prison Industries, had no
means to pay the owners the addi-
tional compensation many hoped to
receive as a result of the exceptional
abundance of the harvest.^®
^'' Groves, Xow It Can Be Told. pp. 76-77: MDH,
Bk. 4, Vol. 4, pp. 4.20-4.21, DASA.
38 Groves, Xow It Can Be Told, pp. 76-77; MDH,
Bk. 4, Vol. 4, pp. 4.2, 4.13, and 4.20-4.21, DASA;
Conlinued
LAND ACQLISniON
335
Adding to the discontent were
rumors that the War Department was
using the right of eminent domain for
the special benefit of Du Pont and
was circulating information that cast
doubt on the value of farmlands in
the area. News of controversy over
the Hanford acquisition program
reached Washington just at the time
the administration was greatly con-
cerned about the likelihood of severe
food shortages in the country. In re-
sponse to an inquiry from the Presi-
dent, the War Department replied
that the Army was doing everything
possible to protect agricultural inter-
ests at Hanford and anticipated sal-
vaging more than three quarters of
the crops. ^^
The Military Policy Committee,
meeting on 30 March, discussed the
President's concern over the possible
adverse effects of the Hanford acqui-
sition on the administration's food
production campaign and decided to
address the issue. Acting on behalf of
the committee, OSRD Director Van-
nevar Bush shortly thereafter commu-
nicated with Roosevelt "as to the
Matthias Diarv, 30 Mar, 10 Juii, 7 Jul, 17 and 22
Aug, 3 Sep 43, OROO; Memo, Matthias to (irovcs,
sub: C^rop Control and Disposal, HKVV, 21 Aug 43,
MDR: Du Pont Constr Hist, Vol. 4, pp. 1348-49,
HOO.
^^ Memo, Matthias to Ciroves, sub: Public Mtg in
Which Du Pont Participated, 23 Apr 43, Admin
Files, (ien Corresp, 600.1 (Constr-Hanford), MDR;
MDH, Bk. 4, \ol. 4, pp. 4.23-4.24. DASA; Matthias
Diarv, 1(3 Mar and 27-28 Apr 43, OROO; Memo.
Revbold to .Maj (ien Edwin M. Watson (Mil Aide to
Roosevelt), sub: (iable Proj, and Ind (draft of letter
lor President's reply to letter from A. ,S. Cioss, chair-
man of The National (irange), 8 Apr 43, .\dmin
Files. Gen Corresp. 601.1 (Hanford), Mi:)R; Croves
Ms, pp. 175-76, CMH; Bureau of the Budget, The
United Stales at War: Development and Administration of
the War Program oj the lederal Viovernment (Washing-
ton, D.C.: (Committee of Records of War Adminis-
tration No. 1 , War Records Section, Bureau of the
Budget, 1946), pp. 324-2(") and 36.5.
need for so much land, the need for
taking the town site in Richland and
the effect on agriculture." '*° Bush did
not succeed in ending the President's
disquietude, and when the matter
came up again at a Cabinet meeting
on 17 June, Roosevelt raised the
question as to whether the leaders of
the atomic bomb project might not
consider moving the plutonium pro-
duction installation to another site.
The President's query was just that,
and not a directive. Political consider-
ations may have been the pressing
motivation. At the time, the Truman
Committee,"*^ alerted by letters from
Hanford area residents, was making
inquiries to the War Department con-
cerning the government's acquisition
of so much agricultural land, and con-
gressmen from W'ashington State
were channeling the complaints they
had received on the matter to both
the War and Justice Departments.
Faced with having to answer to the
President, Stimson looked to the
Manhattan commander for an expla-
nation of the Hanford situation. Late
in the afternoon of the seventeenth.
General Groves explained to the Sec-
retary that representatives of Du Pont
and Manhattan, including himself,
had weighed most carefully the fac-
tors favoring selection of Hanford
and concluded that it was the only
place in the Ignited States "where the
"o MPC Min, 30 Mar 43, OCG Files. Gen Cor-
resp, MP Files, Fldr 23. 1 ab A, MDR.
'" 1 he I ruinan (>)mmittee was a special commit-
tee of the U.S. Senate, formed in 1943 at the insti-
gation of Democratic Senator Harry S. Truman of
Missouri to investigate the conduct of the national
defense program. Ihe committee continued its
hearings until June 1948 under the successive chair-
manship of Senators I rumaii, James M. Mead, and
Owen Brewster.
336
MANHATTAN: 1 HE ARMY AND IHE ATOMIC BOMB
work could be done so well." Reas-
sured, Stimson called the President
and "satisfied his anxiety." ^^
Stimson's assurance to the Presi-
dent by no means ended the threat of
interference in the project by other
interested agencies, especially Con-
gress and the Department of Justice.
When Representative Hal Holmes,
the Republican congressman in whose
district the site was located, had re-
quested information from the War
Department about the project. Groves
directed Colonel Matthias to supply
the congressman with data sufficient
to answer questions from his constitu-
ents. After conferring with Matthias,
Holmes agreed to cooperate fully
with the acquisition program, al-
though he emphasized that he did not
wish the impression to be given to
local landowners that he favored loca-
tion of the project at Hanford. While
he frequently interceded thereafter
with Matthias and the War Depart-
ment on behalf of his constituents in
the Hanford area, Holmes abided by
his pledge of cooperation with
Manhattan. ^^
Washington's junior senator, Mon
C. Wallgren, a Democrat, proved to
be more of a problem. In April 1943,
he forwarded to the Department of
Justice correspondence that he had
received from an attorney represent-
ing a group of dissatisfied Hanford
landowners. This correspondence, as
Wallgren undoubtedly knew it would.
*^ Stimson Diar\ (source of quotation), 17 Jun 43,
HLS; Groves Diarv, 17 Jun 43, LRG; Ltr^ Hugh
Fulton (Truman Gommiltee chief counsel) to Julius
M. Amberg (Spec Asst lo Secy War), 15 Jun 43, in
Senate Gommiiiee Investigating Natl Del Prgm, Ord
Plants Recs, Ord Kstaljlishment, Hanford Ord
Plants. USS.
"Matthias Diarv, 5 and 8-9 Mar, 21 Apr, 3-4 Aug
43, OROO.
came to the attention of Norman M.
Littell, assistant attorney general in
charge of the Lands Division, the sec-
tion of the Justice Department re-
sponsible for prosecution of all court
cases arising from War Department
condemnation procedures in land ac-
quisition projects. Littell, who had
practiced law in Seattle before his ap-
pointment to the Justice Department
in 1940, was currently interested in
promoting enactment of a bill he had
drafted "that would provide for
speedy and summary notice in pro-
ceedings to condemn property for
war purposes, and to accelerate distri-
bution of deposits and awards to per-
sons entitled thereto in such
cases. . . ." '*'*
Littell used the opportunity to pro-
mote support among members of the
Washington State congressional dele-
gation for his bill, which Harry F.
Byrd of Virginia had introduced into
the Senate on 7 April. On the twenty-
sixth, he sent a long letter to all
members of the delegation, giving ex-
tensive details about the Hanford ac-
quisition and expressing skepticism
that the War Department could keep
the project secret in view of the
public character of condemnation
proceedings. Littell also enclosed a
copy of his bill, outlining reasons why
it should be enacted. Lhe Military
Policv Committee considered the se-
■*■' Quotation from title of S. 975. Congressional
Record. 78th Cong., 1st Sess., 7 Apr 43, Vol. 89,
Pt. 3, p. 3029. For details on Littell's pre- 1940 ac-
tivities see the biographical sketch in Who's Who in
Amenra. 194.6-47, Vol. 24, pp. 141(5-17, and Memo,
MD Intel and Scty Div to OIG, sub: Littell's Request
for Delay in Setting Hanford (.ondemnation Gases
lo Permit Reappraisal, 10 Nov 44, .Admin Files,
(ien Gorresp, 601,1 (Hanford), MDR. I'his memo
was, in fact, the intelligence report Lansdale submit-
ted to Groves.
LAND ACQUISniON
337
curity aspects of Litlcll's letter but ac-
ceded to a request from General
Styer, who undoubtedly was express-
ing Groves's wishes, "that in view of
the general situation no action be
taken on the matter." '^^
A short time later the Truman
Committee, of which Wallgren was a
member, exhibited an interest in the
Hanford acquisition, which Littell well
may have encouraged. In early June,
the committee sent inquiries to the
president of Du Pont and to Julius M.
Amberg, special assistant to the Sec-
retary of War. Amberg was asked to
supply the committee with data on
"the factors governing the choice of
this location, the estimated cost of the
project, the status of construction at
present, and [with] suitable comment
with respect to the need for such an
extensive tract of farm land." *^ Re-
sponding to these inquiries. General
Groves, Harvey Bundy, Stimson's as-
sistant, and Brig. Gen. Wilton B. Per-
sons, the War Department's congres-
sional liaison officer, reached agree-
ment that the Secretary of War
should request Senator Truman to
eliminate Hanford from his investiga-
tion for reasons of military security.
Truman heard from Stimson on the
seventeenth and, with the understand-
ing that the Secretary would assume
full responsibility for project activ-
ities, agreed to stop further
investigation.*"^
"Ltrs. Littell to Wallgren and to Holmes, both
26 Apr 43, Admin Piles, Gen Corresp, 601.1 (Han-
ford), MDR; MFC: Min (source of quotation), 5 Mav
43, MDR.
"^Ltr, Fulton to Amberg, 1,5 Jun 43, USS.
■•'Ltr, Rudolph Halley (Fulton's Ex Asst) to
Walter ,S. Carpenter, Jr. (Du Pont president), 8 Jun
43; Outline of | Proposed] Felecon with Sen
Iruman, 1 1 Jun 43; Memo, Bundv to .Secv War,
1 1 Jun 43, and attached note bearing initials FCH
In preparation for the condemna-
tion trials scheduled for early fall,
Colonel Matthias arranged a meeting
with Judge Schwellenbach and Justice
Department officials on 27 August in
Spokane. Participants included, be-
sides the area engineer and Schwel-
lenbach, representatives of the CE
Real Estate Branch and Department
of Justice lawyers assigned to pros-
ecute the cases. The group discussed
a number of problems, including the
possibility of arranging for partial
payments to landowners and giving
the Justice Department attorneys
more authority to increase appraised
values in pretrial conferences. Appar-
ently no firm agreement was reached
on either of these matters, but Mat-
thias found the meeting with Judge
Schwellenbach worthwhile, "as it
cleared up a number of misunder-
standings concerning the Judge's phi-
losophy and the decisions which he
had been making in connection with
the project." Following the meeting,
the HEW Land Acquisition Office
also sought permission from authori-
ties in Washington, D.C., to increase
allowances for a large number of
tracts still in litigation. ^^
In October, the first condemnation
trial by jury began at Yakima, and ad-
ditional cases followed at regular in-
tervals through the winter season,
until early March 1944. Complying
with the regular court procedure in
Washington State, the selected jury
for each case visited the Hanford site
(Miss Neaiv), 17 Jun 43. All m HB Files, Fldr 62,
MDR. See also Ltrs, Carpenter to Halley, 14 Jun 43,
and Amberg to Halley, 24 Jun 43, I'SS; Groves
Diaiv, 11 Jun 43, FRG; Stimson Diarv, 17 Jun 43,
Hi.S.
"* Matthias Diarv, 27 (source of cjuotation) and
31 Aug 43, OROO.
338
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
to inspect the particular tract(s) under
adjudication before the trial proceed-
ing. The trial results indicate that the
juries found the landowners' claims to
be just and that they consistently
awarded payments greatly in excess of
project appraisals. An official observ-
er for the project attributed the
higher payments to a general rise in
land values in the months since the
appraisals had been made, to the pre-
vailing local prejudice against Federal
Land Bank appraisers, and to the
widely held belief that the project
had no connection with the war
emergency."*®
While the Army opposed excessive
payments to the owners, of greater
concern was the slow progress of land
acquisition during the trials. Settle-
ments on more than 1,200 tracts aver-
aged no more than seven cases per
month. If this slow pace continued.
Groves feared the essential secrecy of
the project would be jeopardized, be-
cause of jury inspections in areas
where construction was beginning
and the inevitable public attention fo-
cused on the trials. As a way of
speeding up the process, he arranged
with the Justice Department for the
assignment of more judges and re-
quested an end to jury inspections. ^°
On 24 April 1944, General Groves,
Colonel Matthias, and CE Real Estate
Branch officials conferred with Assist-
"^Memo, Matthias to OCE (Attn: Groves), sub:
Real Estate Appraisals, 18 Oct 43; Rpt, sub: Results
of Trials — HEW (no date and, although no signa-
ture, appears to have been prepared by the HEW
Land Acquisition Office at Prosser for the Office of
the Division Engineer, Seattle, Wash.). Both in
Admin Files, Gen Corresp, 601.1 (Hanford), MDR.
Matthias Diary, 1 Nov 43, OROO.
^"Memo, Groves to Revbold and to CG ASF, sub:
HEW, 23 Mar 44, Admin Files, Gen Corresp, 601.1
(Hanford), MDR.
ant Attorney General Littell in a
meeting at Yakima, arranged by Army
Service Forces commander, Lt. Gen.
Brehon B. Somervell, at Groves's in-
stigation. They agreed that the Justice
Department special attorney and the
HEW Land Acquisition Office manag-
er together could make adjustments
in the appraised value of tracts to fa-
cilitate settlement of cases out of
court. They also detailed the special
attorney and the manager to work out
means for closer coordination be-
tween the project real estate office
and Justice Department officials in
Yakima. Finally, Littell assented to es-
tablishment of a second court and ad-
ditional judges. ^^
LInder Secretary of War Patterson
made the formal request for addition-
al judges to Attorney General Francis
Biddle, who agreed to the plan as
worked out by Littell and Groves. Pat-
terson pointed out to Biddle that
soon, because of security require-
ments, the Army could no longer
permit jury inspections of tracts. In
late May, Littell informed Patterson
that he had arranged for extra judges
and, provided the Under Secretary
could expedite the securing of parts
needed for the Yakima courtroom air
conditioning system, that the trials
would continue through June and
July.^2
In spite of these efforts to speed up
the acquisition process, the results
^'Ibid. Colonel O'Brien, chief of the CE Real
Estate Branch, refers to the memorandums of un-
derstanding in a letter to Littell, 13 May 44, same
files. Matthias Diarv, 24 Apr 44, OROO.
"Ltrs, Und Secy War to Biddle, 2 Mav 44, and
Biddle to Und Secv War, 10 Mav 44, Admin Files,
Gen Corresp, 601.1 (Hanford), MDR; 1 elg, Littell
to Und Secv War, 24 Mav 44. HB Files, Fldr 80,
MDR; MDH; Bk. 4, X'ol. 4, p. 4.4, IX\SA.
LAND ACQlHSn ION
339
were disappointing. Toward the end
of the summer Littell seems to have
decided that fauhy War Department
appraisal work was at the root of the
acquisition difficulties at Hanford.
Consequently, he directed an experi-
enced appraiser on his own staff to
make a sample reappraisal of some of
the more than 700 tracts remaining
unsettled. According to Littell, the
appraiser found many cases of "inad-
equate and faulty appraisal work." ^^
After a conference with Patterson
on 1 September, Littell took another
step, apparently on his own initiative,
to expedite the condemnation trials.
He appointed C. U. Landrum as a
special assistant to the U.S. attorney
to conduct those cases coming up for
trial in September. Littell described
Landrum as "one of the outstanding
trial lawyers of the country . . . ,"
but, at the same time, emphasized
that Landrum's assignment was not to
be interpreted as an indication that
the previously assigned special attor-
ney had not done a good job in the
earlier cases. Verdicts in the Septem-
ber trials, however, were even less
satisfactory than those handed down
in the preceding cases. Juries awarded
payments to landowners that consti-
tuted an even greater percentage of
increase over original government ap-
praisals than those previously grant-
ed. In some instances, the payments
were higher than the largest amounts
demanded by attorneys for the
owners. ^"^
At this juncture, Littell wrote di-
rectly to Patterson, outlining the un-
favorable trend in the recent trials.
"It has been clear for some time that
either the appraisals of the War De-
partment were too low or the jury
verdicts on the trial of condemnation
cases were too high. ... I am having
a further and more extensive recheck
[made] of valuations in this project
and will be guided by the outcome of
this work in the disposal of future
cases in the Hanford Project." In
reply, General Groves and CE Real
Estate Branch officials prepared a de-
fense of the Army's role in the acqui-
sition at Hanford for the attention of
Attorney General Biddle; however,
before it was dispatched, Littell took
direct action. ^^
On 13 October, in Washington to
participate in the Democratic cam-
paign for the 1944 presidential elec-
tion, Littell suddenly appeared before
the district court in Yakima and made
a request to Judge Schwellenbach that
no more condemnation cases be
brought to trial until the Justice De-
partment had an opportunity to reap-
praise all tracts upon which suits were
pending. Although Groves had been
alerted to the fact that Littell was
making a trip to the Hanford area, his
appearance before the court came as
a complete surprise to project officials
^^Ltr (source ol quotation), Littt-ll to Ind Secy
War, 28 Sep 44; Draft Memo, Groves to I'nd Secy
War, sub: HEW, 13 Oct 44. Both in Admin Files,
(.en Corresp, 601.1 (Hanford), MDR; MDH . Bk. 4,
\ol. 4, pp. 4.14. 5.2, App. Bl, DASA; Matthias
Diarv, 24 Nov 44, OROO.
^''Ltr (source of quotation), I.ittell to Und Secv
War, 28 Sep 44, MDR; MDH, Bk. 4, Vol. 4, pp. 4.4-
4.5, DASA.
"I.tr (source of quotation), Littell to Und Secy
War, 28 Sep 44, MDR; Draft Memo. Groves to Und
Secy War, sub: HEW, 13 Oct 44, and attached Draft
Etr, Und Secy War to Atty Gen, MDR (memo and
letter never dispatched); Gloves Diarv. 11-13 Oct
44, ERG.
340
MANHA riAN: IHE ARMY AND IHE A lOMIC BOMB
and Schwellenbach, none of whom
had been notified of his intentions.
Littell reviewed the history of the
land acquisition at Hanford, criticiz-
ing the War Department for the
piecemeal fashion in which it had
taken possession of many of the
tracts. This practice, he asserted,
caused confusion and resentment
among the owners so that an unusual-
ly large proportion of the cases had
to be brought to trial for settlement.
He reiterated that the major cause of
difficulty was the inadequate appraisal
work by the Corps of Engineers, a
fact uncovered by his own appraisal
expert during an investigation. He
promised Judge Schwellenbach that
he would expedite reappraisals and
settlements at once, optimistically
predicting that a majority of cases
would be ready for final settlement
within a month. Schwellenbach stated
that he had not anticipated Littell's
motion but would take it under
advisement. ^^
Littell's remarks before the district
court received wide publicity in area
newspapers, which played up the ob-
vious political overtones of his state-
ment. The local press also published
a considerable number of editorials
and letters from readers, as well as
additional reports on the condemna-
tion cases, during the latter part of
October and earlv November, and a
56 Memo. MD Intel and Sctv Div to QIC, sub: Lit-
tell's Request for Delav in Setting Hanford Con-
demnation erases To Permit Reappraisal, 10 No\ 44,
MDR. Newspaper stories reporting Littell's state-
ment to the court were published in two Spokane
dailies on 14 Oct 44: the Spokesman- Review and the
Daih Chronicle. Copies in Adiniii Files, Gen Corresp,
601.1 (Hanford), MDR. See also MDH, Bk. 4.
Vol. 4. pp. 4.14-4.15, D.ASA; Matthias Diarv, 14
Oct 44, OROO, Groves Diarv, I 1 Oct 44, LRC;.
major news service picked up at least
one story. ^"^
Groves, who was not informed of
Littell's court appearance until 16 Oc-
tober, saw the action as "obviously in-
compatible with essential military se-
curity, the need for which had been
carefully explained to him [LittellJ.
His statement to the court has result-
ed in a considerable amount of unde-
sirable publicity concerning a project
which the President has personally di-
rected should be blanketed with the
utmost secrecy." A further unfortu-
nate aspect of the incident. Groves
noted, was that it gave the public the
false impression that the War and Jus-
tice Departments were at odds on
land acquisition policies, when, in re-
ality, any differences that arose could
be quickly settled by conference, as
had been done at Yakima for the
Hanford project in April 1944.^®
Groves, now determined to take de-
cisive action, worked closely with CE
Real Estate Branch officials and Julius
Amberg in preparing a new statement
of the War Department's position,
w hich Under Secretary of War Patter-
son sent to Attornev General Biddle
5^ Memo, MD Intel and Sctv Div to OIC, sub: Lit-
tell's Request for Delay in Setting Hanford Con-
demnation Cases To Permit Reappraisal, 10 Nov 44,
MDR: Msgs, Matthias to Dist Kngr, Attn: Lt C^ol
William B. Parsons (Intel and Sctv Div chicO.
20 and 24 Oct 44; Msgs, Matthias to Wash Liaison
Office and Dist Engr, Attn: Lansdale and Parsons,
1-3 Nov 44; Memo, Maj Claude C. Pierce, Jr. (Wash
Liaison Oflice) to Groves, sub: Editorial in Spoks-
man's \sic\ Review. 2 Nov 44. All in Admin Files, Cien
Coiresp, 601.1 (Hanford), MDR. Fhis file also con-
tains copies of many of the stories appearing in the
local press.
58 Ltr (source of quotation), I'nd Secy War to
Attv Gen (prepared for Patterson's signature by
Ciroves and the CE Real Estate Br), 7 Nov 44,
Admin Files, Gen Corresp, 601.1 (Hanford), MDR;
Groves Diarv, 16 Oct 44, LRG.
LAM) Ac:(^i isnioN
341
on 7 November. This stalcnicnl em-
phasized Litlell's utter disregard of
essential security and the one-sided
character of much of his criticism of
appraisal policies. It pointed out fur-
ther that the War Department consist-
ently had tried to cooperate with the
Department of Justice and therefore
could see no justification for Litlell's
"public airing of alleged differences
between the Departments in contra-
vention of expressed executive
policy." At the same time. Groves
launched a thoroughgoing investiga-
tion of the Littell incident and its
aftermath of publicity. He sent his
staff security officer, Lt. Col. John
Lansdale, Jr., to the Hanford area to
survey the situation. Lansdale submit-
ted a comprehensive intelligence
report to Groves on 10 November
and took measures to curb newspaper
publicity, particularly by Justice De-
partment special attorneys. ^^
On 21 November, Groves dis-
patched a special three-man investiga-
tion team to Hanford. Heading the
team was Gavin Hadden, a long-time
civil employee in the Engineers' Con-
^^ Ltr (source of quotation), I'nd Secy War to
Attv (}en, 7 Nov 44, and covering Memo, (irovcs to
t'nd Secy War, 2 Nov 44. Both in Admin Files, Gen
Corresp, 601.1 (Hanford), MDR. Copies of the
letter are also in HB Files, Fldrs 51 and 80, MDR.
Memo, Patterson to Roosevelt, 9 Dec 44, HB Files,
Fldr 51, MDR, indicates that a copy of the 7 Nov 44
letter was sent to the President on that date. Memo,
Amberg to I'nd Secy War, sub; Condemnation Pro-
ceedings With Respect to HEW Land, 7 Oct 44. HB
Files, Fldr 51, MDR. Groves Diarv, 16, 19. 23 Oct
and 3, 4, 6 Nov 44, LRG. Msg, Matthias to Wash Li-
aison Office and Dist Fngr, 1 Nov 44; Background
Paper (no title or signature, but probably written in
Groves's olFice as preparation for the 7 Nov 44
letter to Atty Gen Biddle), 3 Nov 44; Memo, MD
Intel and Scty Di\, Littell's Request for Delav in Set-
ling Hanford Condemnation Cases Fo Permit Reap-
praisal, 10 Nov 44. All in Admin Files, Gen Corresp,
601.1 (Hanford), MDR.
struction Division whom (iroves had
used on previous occasions as a trou-
bleshooter. The team's instructions
were to secure "a firsthand knowl-
edge of conditions which influenced
the problems of acquisition of Real
Estate at . . . [the Hanford site] from
February 1943 to date." ^° Vet before
Hadden could submit a preliminary
report, developments in the Justice
Department contributed substantially
to resolving the acquisition problems
at Hanford. A feud of long-standing
between Biddle and Littell over ad-
ministration of the Lands Division
had culminated on the eighteenth
with the Attorney General's formal
request that Littell resign. Instead of
resigning promptly, however, Littell
procrastinated and took advantage of
his delay to submit to the Mead (for-
merly Truman) Committee a list of
grievances against Biddle, expressly
charging maladministration of certain
land cases. Finally, when Littell ig-
nored a second request for his resig-
nation on the twenty-second, the
Attorney General solicited the direct
assistance of President Roosevelt to
remove Littell from office, which oc-
curred on the twenty-sixth. At the
same time, Biddle dissuaded the
Mead Committee from taking further
interest in the controversy. Littell
thus was prevented from making po-
litical capital out of his charge that he
had been dismissed for testifying
before the Senate committee, and fur-
ther congressional inquiries into War
Department land policies, which un-
doubtedly would have exposed the
®° Memo, Hadden to (iroves, sub: Rpl on I rip to
HEW, 4 Dec 44, MDR.
342
MANHAIIAN: IHE ARMY AND THE A lOMIC BOMB
Hanford project to widespread pub-
licity, were avoided.®^
With the departure of Littell there
was a rapid return to normal relations
between the War Department and De-
partment of Justice in the land acqui-
sition program at Hanford. The secu-
rity problem posed by the legal right
of juries to inspect properties in liti-
gation was resolved in negotiations
between Judge Schwellenbach and
Colonel Matthias in March 1945.
Henceforth, juries would be denied
the right to inspect tracts subject to
acquisition, because visits to the
project site would be personally
hazardous.®^
By spring of 1945, settlement of
those cases where outright purchase
of land was necessary again attained
an average rate of more than one
hundred each month and continued
at this pace until the end of the war
in Europe in May brought a general
slowing down of all acquisition activi-
®'The main developments in the Littell-Biddle
controversy may be traced in the following docu-
ments: Memo, Littell to Charles Fahy (Act Atty
Gen), 21 Aug 44; Ltr, Fahy (I'.S. Solicitor (;cn) to
Mead, 1 Jan 45; Ltr, Littell to Rudolph Halley
(Mead Committee chief counsel), 21 Nov 44 (which
contains Littell's statement to the Yakima District
Court concerning Hanford land cases); Memo, Lit-
tell to Mead Committee, sub: Issues Between Biddle
and Littell . ... 21 Nov 44; Ltr, Biddle to Mead,
27 Nov 44; Ltr, Littell to Mead, 30 Nov 44; Press
Release, Mead Committee, 29 Nov 44; Atty Gen's
Statement to Senate Committee on Immigration,
9 Dec 44 (in which Biddle further defended his dis-
missal of Littell); Memo, Sen Harley M. Kilgore
(Mead Committee member), 4 Dec 44; Ltr, Littell to
Mead Committee, sub: Answering Biddies 9 Dec 44
Statement Re Reasons for Requesting Writer's Res-
ignation as Asst Atty Gen, 8 Jan 45; Mead's State-
ment to L'.S. Senate, 6 Dec 44. All in Senate C.om-
mittee Investigating the Natl Def Prgm, Minor In-
vestigations, Subject File, Norman Littell Controver-
sy, USS. See also \ew York Tunes. 30 Nov 44;
Spoke.sman-Revifw. 1 Dec 44; Groves Diary, 23 Nov
44, LRG.
62 Matthias Diarv, 16 Mar 45, OROO.
ties. Vhe land acquisition program at
Hanford remained uncompleted at
the end of December 1946, when the
Army transferred control of the Man-
hattan Project to the newly created ci-
vilian agency, the United States
Atomic Energy Commission. Total
cost of real estate secured at Hanford
by direct purchase and condemnation
procedures up to that time had
amounted to more than $5 million. ^^
Other Sites
Land acquisition was not a major
activity at the many other sites occu-
pied by Manhattan Project facilities.
In most cases where acquisition was
necessary, the Army usually was not
as directly involved as at the Clinton,
Hanford, and Los Alamos sites, al-
though on occasion the local area en-
gineer or the CE Real Estate Branch
provided key assistance to project
contractors seeking more land for
their operations. Generally speaking,
the major research and development
programs located at universities em-
ployed existing facilities and expand-
ed them on land already available on
the campus or in nearby areas. This
was true of most of the University of
Chicago facilities for the Metallurgical
Laboratory, although, for reasons of
safety and security, the Army assisted
the university in acquiring use of a
small site in the forest preserve south-
west of the city for the Argonne Lab-
oratorv. 1 he Universitv of California,
63MDH, Bk. 4, Vol. 4, pp. 5.2-5.4, 6.1-6.4, 7.1-
7.2, Apps. B1-B2, DASA. Cost figures are based on
Military Acquisition Reports, CR Form 5 and FNG
Form ioiO, 28 Feb 43 to 15 Dec 46, and on Land
Acquisition Summarv as of 31 Dec 46, cited in ibid.,
Apps. ElO-Ell, IMSA.
LAND ACQlIISri ION
343
operating under an OSRD contract,
had acquired an 8.3-acre tract 2 miles
north of the Berkeley campus as the
site of most Radiation Laboratory ac-
tivities. Other research centers, such
as the SAM Laboratories at Columbia
University and the Ames project at
Iowa State College, used existing fa-
cilities and leased needed additional
space adjacent to their campuses. P'or
the three heavy water plants built in
the United States at the Morgantown,
Wabash River, and Alabama Ord-
nance Works, the Army's Ordnance
Department made available land al-
ready previously acquired for muni-
tions facilities. In the case of the Trail
heavy water plant in Canada, the War
Department leased an area of less
than an acre from the operating con-
tractor. Similarly, at the many other
places where the atomic bomb pro-
gram sponsored activities of some
type, the project or its contractors ac-
quired use of whatever land and fa-
cilities were necessary to their
operations.^"*
For the more than 500,000 acres of
land that the Manhattan Project pur-
chased, leased, rented, or otherwise
acquired during W'orld W^ar II, it paid
out a sum of about $7.5 million.
There were no major instances where
failure to acquire land seriously de-
layed progress of the bomb project,
primarily because of the vigorous and
alert administrative actions on the
part of General Groves and a great
many Manhattan District and Corps
of Engineers real estate staff members
and, when needed, the strong support
from Secretary Stimson and other key
War Department officials. Their co-
ordinated and effective efforts directly
contributed to the Army's achieve-
ment of the essential goal of its land
program: rapid acquisition of needed
areas without compromising project
security.
*** MDH, Bk. 1, Vol. 4, "Auxiliary Activities," pp.
11.3-11.5; Bk. 2, X'ol. 2, "Research," pp. 2.1-2.5
and 11.1-11.2; Bk. 3, "the P-9 Project," pp. 3.3,
3.11, 3.13, 3.15; Bk. 4, Vol. 1, "General Features,"
p. 2.4 and App. B3; Bk. 4, Vol. 2, "Research," pp.
2.6 and 2.8; Bk. 5, Vol. 2 "Research," pp. 2.7-2.8,
DASA. See C>h. V (Argonne I.ab and heavy water
plants); Ch. VI (Rad Lab); Ch. VII (SAM Labs); and
Ch. IX (Met Lab).
CHAPTER XVI
Manpower Procurement
The Manhattan Project in its man-
power requirements and problems, as
in so many other respects, was unique
among wartime programs. Its work
force, for example, was notable for its
great diversity, running the gamut
from completely unskilled manual la-
borers to the most highly trained sci-
entists and technicians from all parts
of the United States and from
Canada, Great Britain, and many
other countries. While the majority of
its employees were civilians, repre-
sentatives from all the military serv-
ices were assigned to it. And in terms
of total number of workers employed,
Manhattan was one of the single larg-
est wartime enterprises.
Less than two years after the Army
took over active administration of the
project, Manhattan was employing
nearly 129,000 persons in its various
operations. This peak figure, reached
at the end of June 1944 when con-
struction activity on the fissionable
materials production plants was at a
height, included contractor employ-
ment of 84,500 construction workers
and 40,500 operating employees. In
addition, there were slightly fewer
than 1,800 military personnel as-
signed to the project and an equal
number of civil service employees. Al-
though construction activity gradually
declined after the summer of 1944,
total employment on the atomic
project would continue at more than
100,000 into the summer of 1945,
with military personnel reaching a
peak of about 5,600 in the fall of that
year.^
In recruiting and holding this vast
work force, especially during the
midwar period when competition for
manpower from other important war-
time programs was intense, Manhat-
tan had to contend with a number of
serious difficulties. Many of the skills
the atomic project required were in
chronic short supply; location of the
major production plants in relatively
remote areas with limited housing, in-
adequate transportation, and sparse
population compounded existing
manpower procurement obstacles;
and the increasingly stringent require-
ments of the Selective Service System
threatened to take away virtually irre-
placeable technically trained workers
at the most critical juncture in project
operations. Even Manhattan's eventu-
al attainment of the highest priority
among wartime programs recruiting
personnel with scarce skills did not
' MDH, Bk. 1. \'ol. 8, "Personnel," pp. 1.1-1.2
and Apps. Al, A 1.1, A13 (Chart, Mil Personnel
Strength, MD, Jul 42-Dec 46), IMSA.
MANPOWER PROCAREMENT
345
completely compensate for the many
problems. 2
The Manhattan Project, as other
World War II employers, operated in
general compliance with existing
labor laws, regulations, and policies,
modified in certain instances to meet
the exigencies of wartime conditions.
Among those most affecting the pro-
gram were the Davis-Bacon Act, the
Convict Labor Law, the Eight-Hour
Law, the Fair Labor Standards Act,
the National Labor Relations Act, the
Selective Training and Service Act,
the Building and Construction Irades
Wage Stabilization Agreement, and
the "Little Steel" Formula. There
were also the various modifications of
these basic statutes and regulations
embodied in executive orders and en-
gineer directives. The single most im-
portant modifying factor in the
project's adherence to existing man-
power laws and regulations was its re-
quirement for the most rigid security
in all of its operations. Thus, for ex-
ample, the Manhattan District placed
strict limitations on union activities,
established special grievance proce-
dures in lieu of public hearings by the
National Labor Relations Board, and
provided its own internal administra-
tion of the Fair Labor Standards Act.^
2 Ibid., pp. 1.1-1.2, DASA; Memo, Groves lo t'nd
Sec War, sub: MDs Labor Problems, 1 Nov 43, HB
Files, Fldr 80, MDR; (;roves, A'ow It Can Be Told. pp.
98-101; Llr, Arthur I.. Hughes (Personnel Dir, Los
Alamos Lab) to .Samuel I . Arnold (MI) (".onsultanl
for lech Personnel), 15 Jan 44, Admin Files, Cien
Corresp, 201 (Gen), MDR. Ihe subject of the letter
concerned the effect of the changes in the Selective
Service regulations on the laboratorv's scientific
staff.
'For an analvsis ol applicable statutes, regula-
tions, and policies relating to manpower in World
War II see MDH, Bk. 1, Vol. 8, App. Bl, DASA. For
an example of a District modification of an existing
policy on grievance procedures see Ltr, Dist Kngr to
Ferso/mel Organization
Until mid- 1942, Manhattan's man-
power problems were limited primari-
ly to recruiting scientific and technical
personnel. The National Research
Council, under its contract with the
National Defense Research Commit-
tee (NDRC), had established the
Office of Scientific Personnel in the
spring of 1941, primarily to assist
those wartime programs requiring sci-
entifically trained persons. But as the
demand rapidly increased, more dras-
tic measures were needed to ensure
an efficient and equitable employ-
ment of scientific manpower. Accord-
ingly, Vannevar Bush, as head of the
Office of Scientific Research and De-
velopment (OSRD), had appointed
the Committee on Scientific Person-
nel. This committee, which held its
first meeting in June 1942, not only
recommended measures for securing
scientific personnel but also actively
assisted OSRD contractors in such
matters as determining proper rates
of compensation for scientific employ-
ees, securing deferments from mili-
tary service for them, and recruiting
additional scientists.'*
The decision to proceed with con-
struction of the production plants
brought a major change in the atomic
program's manpower requirements.
Henceforth, the emphasis became one
of fulfilling requirements for a com-
plex industrial enterprise. Project re-
cruiters now had to procure many
engineers and technicians, tens of
thousands of skilled and unskilled
All Operating Contractors, CEW, 27 Sep 44, copy
m ibid, App. B 11, DASA.
"Stewart, Organizing Siientifu Resmidi for War. pp.
256-57.
346
MANHATTAN: 1 HE ARMY AND THE AEOMIC BOMB
workers from the ranks of American
labor, and the additional administra-
tive personnel, both civilian and mili-
tary, requisite to managing the far-
flung activities of this vast new army
of atomic employees.^
The Army continued the OSRD
practice of delegating most recruit-
ment activities to project contractors.
Generally speaking, Manhattan re-
cruited only the District headquarters
staff of specialists, whose primary role
in manpower procurement was to
assist project contractors and the
hundreds of firms that supplied es-
sential equipment and services to the
project. The District personnel staff
devoted considerable time to such
measures as wage adjustments and
improvement of working conditions
that contributed to procurement and
maintenance of an adequate work
force. More often than not the Dis-
trict's role was to serve as the liaison
channel through which project con-
tractors and suppliers could commu-
nicate with various governmental
agencies, with labor unions, and with
other wartime organizations that
could provide assistance in the solu-
tion of manpower problems.^
Under the original organization of
the district engineer's office, various
personnel activities were distributed
among several divisions. (See Chart 1.)
The Military Personnel Section, which
also carried on liaison with the Selec-
tive Service, constituted a part of the
District's Administrative Division. 1 he
^Snivth Reporl. p. 8!^; Memo, Bush to C.onant.
sub: lube- Allovs Pigm, 19 Jun 42. HB Filt-s, Fldr 6.
MDR.
^Marshall Diary. 19 and 27 Jun 42, (XXi Files,
(.en (.orresp, Ciroves Files, Misc Rccs Sec, behind
Fldr 3, MDR; Ciroves, Sow It Can Be Told. pp. 12-1 .'5;
DSM Chronologv, 26 Sep 42, .Set. 15(b), OROO.
Labor Relations Section, which was
concerned mostly with wage and
salary schedules, formed part of the
Service and Control Division and op-
erated in combination with the Safety-
Accident Prevention Section. Other
departments administered routine
personnel matters. Personnel prob-
lems from area engineers in the field
were similarly distributed to the ap-
propriate headquarters office for
disposition.^
Following the move of the Manhat-
tan District headquarters from New
York to Oak Ridge in August 1943,
the district engineer took steps to
centralize the administration of many
functions, including those relating to
manpower. {See Chart 2.) He shifted
the Military Personnel Section, in-
cluding its Selective Service functions,
from the Administrative to the Service
and Control Division. This left the
Administrative Division with supervi-
sion chiefly over civil service and
other civilian personnel of the District
and of the Clinton Engineer Works
(the District headquarters had ab-
sorbed most functions of the Clinton
Area Engineers Office when it moved
to Oak Ridge). Finally, in P^ebruary
1944, the district engineer created a
separate Personnel Division, placing
in it all those manpower functions
hitherto carried out by the Service
and Control Division. To provide
more assistance to area engineers and
contractors as manpower problems
reached a peak, both the Selective
Service and the Labor Relations Sec-
tions of the new Personnel Division
opened field offices in New York,
'MDH, Bk. 1, \()1. 8, App. A2, DASA; Org Chart.
t'.S. Engrs OfFue, Ml), Aug 43, Admin Files. Gen
Corresp', 020 (MFD-Org). MDR.
MANPOWKR PROClRKMKNr
347
Chicago, and Oak Ridge, and at
Pasco, Washington, near the Hanfoid
Engineer Works. ^
Organizational arrangements at
field installations did not conform to
any set pattern. PLach area engineer or
post commander set up the type of
organization required for the kind of
personnel needed to perform the
work in progress at his installation. At
the Hanford Engineer Works, for ex-
ample, where manpower require-
ments resembled those at the Clinton
Engineer Works, the area engineer
established an organization similar to
that in Oak Ridge. A large labor rela-
tions section worked in close coordi-
nation with Du Pont and local labor
officials in the recruitment and em-
ployment of thousands of construc-
tion and production workers. A small-
er personnel section dealt with prob-
lems relating to employees of the area
engineer's office.^
At the Los Alamos Laboratory and
the University of Chicago's Metallur-
gical Laboratory, the work force con-
sisted primarily of civilian scientists
and technicians employed under uni-
versity contracts, a few civil service
employees, some military personnel,
and a varying number of workers
brought in by construction and serv-
ice contractors. Because there were
no large production plants at either
site, labor relations with construction
and production workers constituted
only a minor administrative problem.
At Los Alamos, which the Army ad-
ministered as a military post, the post
commander established a small civil-
ian personnel section in his adminis-
trative office to deal with nonmilitary
manpower problems and to assist
J. Robert Oppenheimer, the civilian
project cfirector, in recruiting scien-
tists, technicians, and otfier special-
ists. At the Metallurgical Laboratory,
manpower problems were similar to
those at Los Alamos, except that
there were fewer military personnel.
Ihe area engineer for the laboratory
designated the personnel staff in his
office as the Deferments Branch,
which was indicative of its primary
function. ^°
Neither the district engineer nor
the area engineers by themselves
could solve some of the most crucial
manpower problems. Procurement of
industrial workers with scarce skills,
recruitment of scientific and technical
specialists, and obtaining deferments
for key personnel were examples of
manpower problems so vitally related
to the entire war effort that they
could not be adequately dealt with
except through officials who con-
trolled the nationwide recruitment
and employment of manpower. Con-
sequently, General Groves made his
personal headquarters in Washington,
D.C., available as a liaison point
through which project personnel offi-
cials at District headquarters and in
the field installations could channel
manpower problems to appropriate
Washington officials or agencies.
More often than not, the Manhattan
commander himself would take the
initial steps. ^^
»Org Charts, I'.S. Engrs OIIkc. MI), Aug 4:{-I..n
45, MDR; MDH, Bk 1, Xol. 8. p|> 1.4-1.5 and .\pp.
A3. DASA.
niDH, Bk. 4, \ol. 5, •Construction." pp. 4.1-
4.26. 12.3-12.4, App. B57, DASA.
'"Ibid., \'ol. 2, "Research," pp. 7.1-7.3 and
Apps. B5 and B8, and Bk. 8, \ol. 1, "(ieneral,"
Apps. B2 and B3, DA.SA.
' ' For examples of Croves's Irccjueni personal in-
volvement in manpower procurement prcjblems see
(!<>iilinued
348
MANHAITAN: 1 HE ARMY AND IHE AIOMIC BOMB
General Groves was able to deal ef-
fectively with the problems of wartime
manpower without building up a com-
plex organization in his own office
because he could secure assistance
whenever he needed it from manpow-
er specialists in the Office of the
Under Secretary of War, the Army
Service P'orces' (ASF) Industrial Per-
sonnel Division, and the Office of the
Chief of Engineers (OCE). Also, in
matters pertaining to military person-
nel, he could channel project requests
directly to Lt. Gen. Brehon B. Somer-
vell, the ASF commander. P^urther-
more, through these various War De-
partment channels Groves had ready
access to union leaders, manpower of-
ficials in federal agencies, and others
who controlled important elements of
the country's manpower pool.^^
Manpower procurement activities of
the atomic project generally fell into
three major categories: the quest for
scientific and technical personnel, na-
tionwide recruitment of industrial
labor, and securing military and civil-
ian administrative personnel. Each
aspect of manpower procurement
presented its own special problems
and the Army administrators of the
project would devote a considerable
amount of time and energy to their
resolution. ^^
correspondence in HB Files. Fldr 80, MDR. and Ltr,
Tolman to Ciroves, 26 Jul 43, Admin Files, Oen
Corresp, 231.2 (Physicists), MDR.
12 Groves, Xow It Can Be Told. pp. 99-101; Ltr,
Marshall to Robins, 16 Nov 42, Admin Files, (kn
Corresp, 231.2, MDR. Typical examples of (iroves's
employment of manpower specialists in the Under
Secretary of War's office to expedite solution of
personnel problems on the Manhattan Project ma\
be found in HB Files, Fldrs 51, 79, and 80, MDR.
13MDH, Bk. 8, Vol. 1, pp. 2.1-2.2 and 7.1-7.2,
DASA.
Scientific and Technical Personnel
P^ven though there was a decrease
in research and development activities
after mid- 1942, the need for more sci-
entists and technicians did not decline
proportionately. Because of the highly
technical and unusual character of the
laboratory-devised methods for pro-
ducing fissionable materials, the firms
engaged in building the production
plants had to rely upon the project's
research organizations for the techno-
logical knowledge to design, engi-
neer, test, and operate the plants. Not
only did these research organizations
have to solve many crucial technical
problems of plant construction and
operation, they also had to supply
from their own staffs on a more or
less permanent basis many of the ex-
perts who supervised the equipping
and operation of the plants.^'*
hi addition to maintaining the staffs
of these existing research organiza-
tions at a reasonable level of efficien-
cy during 1943, Manhattan recruiters
had to find scientists and technicians
to staff an entire new research and
development center operating under
a University of California contract,
the Los Alamos Laboratory in New-
Mexico. At the peak of its activities in
1945, this installation required more
than seven hundred scientifically
trained persons on its staff. While
many of the division and group lead-
ers came from the project's other re-
search organizations, many of the
technicians and junior scientists and
'■*See Chs. \I-1\. Sec also C^omplon, Alomu
Qjtnl. pp. 170-74 and 184-85.
MANPOWER PROCLRKMKM
349
sonic of the most iniporlant senior
personnel were newly recruiled.^''
By 1943 junior scientists, typically
graduate students with little or no
practical experience, were about the
only available scientifically educated
manpower, and many of them were
subject to the draft. In (act, a large
number of the young scientists who
came to work for the project after
1943 were already in uniform or,
shortly after joining the atomic pro-
gram, were called into service and as-
signed to the project's Special Engi-
neer Detachment. ^^
During the OSRD's administration,
each research and development orga-
nization had recruited its personnel
with assistance and guidance from the
OSRD's Committee on Scientific Per-
sonnel. The Army continued essen-
tially the same policy, with General
Groves and the project's Washington
Liaison Office replacing the Commit-
tee on Scientific Personnel as the
chief channel throtigh which the di-
rectors of Manhattan's research orga-
nizations could obtain assistance in
difficult cases. The Manhattan com-
mander, for example, often inter-
vened directly with government or
academic manpower officials to
ensure an adequate staff for the new
Los Alamos Laboratory, or to aid
J^MDH. Bk. 8. Vol. 2, "Technical (Project V His-
tory)." App. (iiaph No. 2, DASA; I.tr, Groves to
Bush. 20 .Apr 44, .Admin Files, Gen Gorresp, 231.2
(Scientists). MDR: Memo, Maj I'eer de .Silva (Mil
Intel Br chief, I>os .Alamos I.ab) to (iroves, sub: Pro-
curement of .Scientific Personnel, 27 Sep 44. .\dmm
Files, (;en Gorresp. 201 (Gen). MDR.
>6MDH. Bk. 8. \ol. 2. p. III. 17, DASA. On pro-
curement oi scientists from other wariime projects
see .MDR, HB Files. Fldr 24. correspondence relat-
ing to radar specialist Norman F. Ramsev, and I.tr,
Styer to W. M. Peirce (New jersev Zinc Go., Palmer-
ion. Pa.), probablv Sep 4.3. MI). 1942-4.5. Somervell
Desk File. ASF.
Manhattan contractors in obtaining
technical personnel. Because most
personnel in these categories already
were employed on other important
wariime projects. Groves frequently
had to seek assistance at the highest
levels to secure their transfer to the
Manhattan Project. ^^
One method that proved to be
most effective was a direct communi-
cation— usually a letter — from Groves
to the appropriate university adminis-
trator, corporation president, or gov-
ernment agency head, pointing out
the vital character of the atomic pro-
gram and requesting the release or
loan of scientists to the Manhattan
Project. In other instances. Groves
enlisted the aid of OSRD Director
\'annevar Bush or Harvey Bundy,
special assistant to Secretary Stimson,
and, through Bundy, of the Secretary
himself. Stimson, for example, was in-
strumental in recruiting Norman F.
Ramsey, the radar specialist who
helped design the atomic bomb.^®
'^I.lr. Oppenheimer to Isidor I. Rabi (Rad I,ab,
Mil ), 26 Feb 43, Admin Files, Gen Gorresp, 161
(t'niv of GaliO, MDR. See also Grovcs's letters in
.Admin Files, Gen Gorresp, 231.2 (Scientists). MDR.
'* Numerous examples of the extensive corre-
spondence by Groves and others on the procure-
ment of scientists for the Manhattan stafT are in
Admin Files, Gen Gorresp, 231.2 (Scientists), MDR.
On the recruiting of Ramsev see HB Files, Fldr 24,
MDR, for .Memo, Fdward L. Bowles (consultant to
Secy War) to Bundy, sub: Dr. Norman F. Ramsey,
12 jun 43; Memo, Groves to Bundy. sub: Need for
Dr. Norman F. Ramsev, 5 Jul 43; Memos, Bundv to
Bowles, 7 Jul and 19 Aug 43; Memo, Bundv to Scc\
War, 10 Sep 43; Memo for File, unsigned (probabh
Bundv), 14 Sep 43. Sec MD, 1942-45, Somervell
Desk File, .ASF, for Memos, Stver to Groves, 18 and
23 Sep 43. In the same file is General Siver's corre-
spondence on the recruitment of scientists alreadv
in militarv service. See Memo, Styer to Brig Gen
Joseph N. Dalton (.Act Ghief of Staff, Personnel.
SOS), 9 Feb 43; Memo, Groves to Stver, sub: .As-
sigmncni of Gapl O. H. Gieager. GWS. lo MD.
350
MANHAI I AN: IHE ARMY AND IHE AIOMIC BOMB
Groves also turned often to his
military and scientific advisers. Both
Maj. Gen. Wilhelm D. Styer and Rear
Adm. William R. Purnell of the Mili-
tary Policy Committee assisted in se-
curing scientists and technicians in
active military service. Richard C.
Tolman and James B. Conant were
instrumental in procuring a number
of key scientists for the Los Alamos
project. Tolman drew up for Groves a
comprehensive list of all atomic scien-
tists in the United States and had
them rated by scientists already as-
signed to the atomic project as to
their ability, experience, qualities of
leadership, and availability. Conant
played an important part in persuad-
ing George B. Kistiakowsky, an explo-
sives expert on the NDRC staff, to
leave this position for one at Los
Alamos and then in assisting him to
secure additional scientists for his im-
plosion research team at the labora-
tory. Supplementing the efforts of
Tolman and Conant was Dean
Samuel T. Arnold of Brown Univer-
sity, a chemist by training, engaged
in 1943 as a consultant to recruit
technical personnel at educational
institutions.^^
9 Feb 43; Memo, (".roves (for Rcvbold) to Slvei,
sub: Transfer of 2d Lt Rollin D'Arcv Morse, 5 Mar
43.
'^ On Kistiakowsky see I.trs, Capt William S. Par-
sons (Ord Div chief, Los Alamos Lab) to ("-onant.
19 Feb 44. Groves to Bush, 20 Apr 44, and Kistia-
kowsky to (iroves, 1 May 44, Admin Files, Oen Cor-
resp, 231.2 (Scientists), MDR. On other aspects of
the program to recruit scientists see Memo, Parsons
to Li Col Whitnev Ashbridge (CO, Los Alamos
Lab), 23 Jun 44, Admin Files, Gen Corresp, 620
(Santa Fe), MDR, and Hewlett and Anderson, Xew
World, p. 247. Two versions of Folman's list appear
in Admin Files, Gen Corresp, MDR: the first, undat-
ed (probablv Jul 43), is in 201 (Gen); the second,
Incl to Ltr, Tolman to Groves, 26 Jul 43, is in 231.2
(Phvsicists). On Dean Arnold see MDH, Bk. 1, Vol.
8, p. 2.3, DASA.
By late 1944, the Manhattan Project
was employing virtually all available
specially trained personnel. Hence,
the only solution to answering the
specific needs of the various project
installations was to transfer scientists
from one area to another area of the
atomic program. For example, when
Oppenheimer requested approximate-
ly fifty scientists holding a doctor of
philosophy degree in physics, or its
equivalent, to staff a major new divi-
sion at the laboratory, he suggested
that this number was available in the
Metallurgical Project, serving as
standby crews for the Hanford plant.
After consultations with Metallurgical
Project Director Arthur Compton,
Groves directed him to release the
fifty physicists from his program. By
December 1944, Compton had com-
plied, but only by placing on a virtual
standby all research and development
activities related to physics at the
Clinton, Argonne, and Metallurgical
laboratories. ^°
Industrial Labor
As in the procurement of scientific
and technical personnel, the Manhat-
tan Project employed a variety of
methods and drew upon many
sources in recruiting both skilled and
unskilled labor. For assistance in pro-
curing skilled construction workers
and some maintenance personnel
(carpenters, bricklayers, electricians,
^"Memo, de Silva to Groves, sub: Procurement of
Scientific Personnel, 27 Sep 44; Llrs, Groves to
Compton, 31 Oct 44, and Compton to Groves,
7 Dec 44. All in Admin Files, Gen Corresp, 201
(Gen), MDR. See also Ltr, Compton to Groves, sub:
Transfer of Physicists to Proj Y, 6 Oct 44, Admin
Files, Gen Corresp, 230.35 (Changes of Station and
Transfer), MDR.
MANPOWER PROCLREMKNI
351
pipe fitters, mechanics, and related
trades), Manhattan turned to the
unions comprising the Building and
Construction Trades Department of
the American Federation of Labor.
For unskilled or common labor and
some semiskilled personnel (cafeteria
employees, plant operation trainees,
and similar job categories), it depend-
ed primarily upon recruiters hired by
project contractors or by the Army,
who followed regular routes estab-
lished by the War Manpower Com-
mission in their search for available
workers. Supplementing these recruit-
ers, but a far less productive source,
were the offices of the United States
Employment Service in each impor-
tant employment center. Finally, for
much of the manpower that super-
vised work forces for both plant con-
struction and operation, the project
relied upon personnel furnished di-
rectly by the major contractors.^^
Manhattan's multifaceted and far-
ranging quest for workers was neces-
sary because, by 1943, when the
project was beginning its large-scale
procurement of construction labor,
the nation had used up the large pool
of unemployed carried over from the
Depression and was experiencing an
actual labor shortage. Project recruit-
ers had anticipated problems at the
Hanford Engineer Works because it
was located in Region XII of the War
='MI)H. Bk. 1, Vol. 8, pp. 2.2-2.5, DASA. For
specific accounts of contractor participation in labor
recruitment see Completion Rpt, Du Pont, sub:
Clinton Engr Works, I'NX Area, Contract W'-7412-
eng-23, 1 Apr 44. pp. 73-93, OROO; Completion
Rpt, Stone and Webster, sub: (>linion Kngr Works,
Contract VV-7401-eng-13, 1946, pp. 144-45,
OROO; Du Pont Conslr Hist, Vol. 1, pp. .50-67,
HOO. See also I.tr, M. W. Kellogg (Kellogg Co.
president) to Croves, 9 Mav 45, .\dmin Files, Cen
Corresp, 231.21 (Kellex). .\11)R.
Manpower Commission, an area that
long had had serious labor shortages.
But they were surprised when a
severe shortage of common labor de-
veloped at the Clinton PLngineer
Works where contractors were re-
cruiting from Region \1I (Alabama,
Florida, Ceorgia, Mississippi, South
(Carolina, and lennessee), an area
that still had a labor surplus. Never-
theless, by June, lack of some three
hundred laborers was jeopardizing
the construction schedule at Clinton,
and the indications were that neither
the common laborers' union nor the
regular itinerant recruiters working
through the U.S. Employment Service
were going to be able to procure the
additional numbers needed. ^^
For a solution, General Groves
looked to manpower agencies in
Washington, D.C. Using War Depart-
ment channels, specifically Under
Secretary of War Robert P. Patter-
son's office and the ASF's Industrial
Personnel Division, he negotiated
with officials of the War Manpower
Commission. His objective was to
secure a change in certain commis-
sion practices. One such practice was
the reluctance of its field organization
to permit Manhattan recruiters to in-
terview prospective workers in re-
^^ Byron Pairchild and Jonathan Grossman, The
Army and Industrial Manpower. U.S. Army in World
War II (Washington, D.C: Government Printing
Ofllce, 1959), pp. 55 and 255-56; Robert R. Palmer,
Bell I. Wiley, and William R. Keast, The Procurement
and Training of Ground Combat Troops, I'.S. Army in
World War II (Washington, D.C.: Government
Printing Office, 1948), pp. 36-37, 45, 503; MDH,
Bk. 1, Vol. 8, pp. 2.3-2.4 and App. Al. D.AS,\;
Memo, Maj Warren (ieorge (Clinton .Area Fngr) to
Dist Fngr, sub: Labor Supply-Apparent Inability
lo Supplv Required Labor, 25 Mar 43. OROO;
Memo for File, Labor Rels Sec, same sub, 22 Mar
43. OROO; Du Pont Constr Hist, \'ol. 1, p. 50.
HOO.
352
MANHAITAN: THE ARMY AND IHE A lOMIC: BOMB
gions other than those in which
atomic facihties were located until all
local and regional employment needs
in those other regions had been met.
Another was what Groves claimed was
its tendency to route Manhattan's itin-
erant recruiters to small towns where
few prospective workers were avail-
able, rather than to the cities where
there was a surplus of labor. Du Pont
officials at Hanford also had com-
plained to Groves about this incon-
sistency in policy, "necessitating re-
cruitment in a certain manner in one
town and in a different manner in a
similar nearby town." ^^
As an immediate result of Groves's
negotiations with the Manpower
Commission, the Manhattan Project
in late summer of 1943 received a
very limited and temporary priority
for recruiting common labor. laking
care to maintain very strict control
over what was to be the first wartime
instance of establishing a system of
priorities in manpower recruitment,
the commission assigned a special
representative to the Manhattan Dis-
trict, giving him authority to issue
certificates of availability to potential
recruits for the project's common
labor force. The representative could
issue the certificates only to workers
employed in nonessential jobs. Armed
with these certificates, workers could
leave their nonessential employment
and go to work for Manhattan even
though their employers were opposed
to the move. At the same time, the
2^ Du Pont Cxinstr Hist (source of quotation),
\ol. 1, p. 67, HOO; Memo, Groves to Und Secv
War, sub: MD's Labor Problems, 1 Nov 43, MDR;
Memo, W. D. S. (undoubtedly Maj Gen W. D. Styer)
to IJames] Mitchell (Industrial Personnel Div Dir.
ASF), 7 Dec 43, MD, 1942-45, Somervell Desk File,
ASF; Memo, Patterson to Groves, 14 Feb 44, HB
Files, Fldr 80, MDR.
Manpower Commission directed that
all workers in the common labor cate-
gory who had looked for employment
through the U.S. Employment Service
should be referred first to interview-
ers of Manhattan District contractors.
When even these priority arrange-
ments failed to secure all the common
laborers needed, the commission au-
thorized Manhattan recruiters to seek
workers on a temporary basis in areas
immediately adjacent to Region VII.
The manpower priority system ap-
plied initially only to recruiting for
the Clinton Engineer Works, but in
September 1943 the commission also
granted similar privileges to recruiters
seeking common labor for the Han-
ford Engineer Works in Region XII. ^*
The Manpower Commission's spe-
cial concession only temporarily re-
lieved the project's labor recruiting
problems. In late 1943 and early
1944, when requirements for both
construction and production workers
mushroomed, the atomic installations
developed new manpower shortages.
By April 1944, General Groves esti-
mated that the project required an
additional ten thousand construction
workers at the main production plants
and more than eighteen hundred re-
search personnel at the research lab-
oratories. He noted that the major
deficiencies were a shortage of four
thousand common laborers and
twelve hundred operating personnel
at Clinton and Hanford, respectively,
and, in addition, of eight hundred
millwrights at the latter site. The
chief of the Labor Branch of ASF's
Industrial Personnel Division, Lt. Col.
24MDH. Bk. 1. \'ol. 8, pp. 2.3-2.4, DASA; Du
Pont Constr Hist, \ol. 1, p. 52, HOO.
MANPOWER PR()C:i RKMENT
353
John K. CA)llins, confirmed (irovcs's
figures for the CHnton Engineer
Works after an inspection trip there
in May, adding the further observa-
tion that, as a result of the shortage,
some seventeen hundred carpenters
were doing laborers' work at carpen-
ters' wage rates. Colonel Collins
cited, loo, the need for electricians,
estimating the requirements to be
twenty-five hundred — more than twice
the number Croves had mentioned. ^^
In spite of these shortages. General
Groves remained optimistic that the
atomic program had a good chance to
produce a bomb during the first part
of 1945, provided that the project
continued to have the "highest priori-
ty in supplies, personnel, and equip-
ment." ^^ When the Manhattan com-
mander expressed this view at a meet-
ing of the Combined Policy Commit-
tee, Secretary Stimson, who was pre-
siding, assured him that the project
would continue to have first priority
in manpower recruitment. In March
1944, the War Production Board
placed Manhattan at the top of its list
of the twelve most urgent programs
currently in progress. Then in No-
vember 1944, the War Manpower
Commission further strengthened
Manhattan's top-priority position by
awarding the project the highest cate-
gory under its system for pric^rity re-
2^ Table (Schtdule oi Eslinialed Labor Require-
ments for All Constr Contractors, 1 Dec 43-1 Jul
44, CEW), Incl to Memo, Lt Col Ihomas I . Cren-
shaw (Ex Ofl. (>EW') to Groves, sub: Labor P'orecast,
11 Dec 43, Admin Files, Gen Corresp, 201 (Gen),
MDR: Memo, Li Col John K. Collins (Labor Br
chief. Industrial Personnel Div, ASF) to Groves, sub:
N'isii to Clinton Engr Works (16-17 Mav 44). 22
Mav 44, HB Files, Fldr 79 (Jack Madigan), MDR: l)u
Pont Constr Hist, Vol. 1, pp. .57-61, HOC).
^^ Memo, unsigned (undoubtedlv Groves), after
13 Apr 44. HB Files. Fldr 109. MDR.
ferral of workers seeking jobs through
the U.S. Employment Service. ^^
Manhattan, however, did not rely
solely upon a high-priority rating.
Working in close coordination with
labor officials in Under Secretary of
War Patterson's office, the District
arranged for assignment of special re-
cruiting teams to Clinton and Han-
ford, composed of eight or nine mili-
tary officers from the Manpower
Commission, the ASF's Industrial
Personnel Division, and the Corps of
Engineers. Special representatives
designated by the commission and the
War Department coordinated the ac-
tivities of the teams and provided
them with a direct channel of commu-
nication to Washington manpower
agencies. Because of the success of
these special military teams, Manhat-
tan continued to use them well into
1945. In late 1944, for example, the
Los Alamos Laboratory desperately
needed 190 additional machinists and
toolmakers, a category of skilled
workers always difficult to recruit.
The District organized several
teams — each composed of an Army
officer, a professional recruiter, and a
security agent — and dispatched them
into six manpower areas (Regions I,
II, III, \\ VI, and VII). In less than a
month they had procured all of the
machinists and toolmakers required
bv the New Mexico installation.^®
27 MDH, Bk. 1, Vol. 8. pp. 2.4-2. .5 and App. B6
(WMC Field Instruction No. 416. .Supp. No. 2. to
.All Regional Manpower Dirs, sub: Establishment of
C>ategories of Emplover Orders for Prioritv Referral
and Factors To Be Considered in Detcrmming Eligi-
bilitv of Orders for Prioritv. 27 Nov 44), DA.SA;
CPC Min. 13 Apr 44, D.S: Fairchild and Grossman,
.Irnn ami Induslnal Manpower, pp. 30, 146-49, 200.
28 Outline for VVD-WMC Mtg Re MD Projs,
2.5 Apr 44. HB Files. Fldr 79 (Jack .Madigan). .MDR:
ConliniuH
354
MANHAIl AN: IHE ARMY AND IHE A lOMIC BOMB
Procurement of certain types oi es-
sential skilled labor, such as pipe fit-
ters and electricians, defied efforts of
even special recruiting teams, and
other measures had to be instituted.
When construction at Hanfbrd in the
summer of 1944 required several
hundred additional pipe fitters, Du
Pont, the prime contractor, and the
International Association of Plumbers
and Pipe Fitters jointly launched a
major recruiting effort, even though
the absolute unavailability of pipe fit-
ters in the civilian labor market fore-
doomed them to failure. 4 here were,
however, many soldiers with this skill
in Army units stationed in the United
States. Consequently, Secretary Stim-
son directed Army Chief of Staff Mar-
shall to transfer 200 enlisted men
with pipe fitting skills into the Enlist-
ed Reserve Corps for a period of 90
days (subsequently extended to 180
days). The soldiers had to be in limit-
ed service status, that is, not qualified
for overseas duty, and willing to work
at Hanford. By early September, the
first of an eventual total of 198 mili-
tary pipe fitters were reporting for
duty at the plutonium site.^^
About the same time, a shortage of
some twenty-five hundred electricians
was seriously jeopardizing meeting
construction schedules at both Han-
ford and Clinton, and project recruit-
ers indicated to General Groves that
there was little likelihood of obtaining
VIi:)H, Bk. 1, \'()l. 8, pp. 2.6-2.7, DASA; Memos,
Brig Gen Edward S. Creenbaum (Ex Off for L'nd
Secv War) lo C>apt Walker E. Stagg et al., 13 and
18 Nov 44 and 20 Apr 45, HB Eiles, Eldr 80, MDR.
Ihese memos, prepared by the District and ap-
proved by Groves, detailed the specified individuals
to undertake a special recruitment program.
29MDH, Bk. 4, Vol. 5, pp. 4.8-4.9, DASA;
(Woves, \ow It Can Be Told. p. 101; Du Pont Constr
Hist, \'ol. 1, pp. 64-65, HOO.
them through normal employment
channels. In this emergency the Man-
hattan commander once again turned
to Under Secretary of War Patterson's
office for assistance. Patterson imme-
diately got in touch with Edward J.
Brown, president of the International
Brotherhood of Electrical Workers,
and Laurence W. Davis, manager of
the National Electrical Contractors
Association, as well as officials at the
War Manpower Commission. In due
course he and Groves worked out an
agreement with these organizations,
the so-called Patterson-Brown Plan,
by which Manhattan had authority to
borrow for a ninety-day period elec-
tricans already employed on jobs not
essential to the war. To make _ the
plan attractive, there was provision
for payment of travel expenses and a
guarantee that the individuals would
not lose their seniority rights and
could return to their previous place
of employment after completing
ninety days of service on the atomic
project. To encourage cooperation of
employers, the plan provided that all
organizations that released electri-
cians to work at Hanford or Clinton
would receive official recognition. A
news release from Patterson's office
gave the plan wide publicity in the
newspapers, and General Styer re-
quested the appropriate Army service
commands to furnish whatever assist-
ance they could. In a few months, this
novel solution supplied the electri-
cians needed to meet both Hanford
and Clinton construction deadlines. ^°
30 MDH, Bk. 1, \'<)l. 8, p. 2.6 and App. B7; Bk. 4,
Vol. 5, pp. 4.7-4.8: and Bk. 5, Vol. 5, "Gonstruc-
tion," pp. 5.1-5.2. DASA. Ltrs, Patterson to Brown
and to Davis, 21 Jun 44, and Patterson to GG's of
Continued
MANPOWKR PR(K:i'REMENr
355
After the fashion of the fringe ben-
efits of tfie Patterson-Brown Plan,
project recruiters frequently offered
special inducements to attract persons
with critical skills, usually in the form
of payment of all or part of a worker's
transportation costs in traveling to
Hanford or Clinton, a guarantee of
housing (but usually not for family),
and furnishing recreational and other
community facilities. On occasion,
Manhattan applied to the National
War Labor Board for modification or
adjustment of the prevailing wage
rates. Thus, in July 1943, Under Sec-
retary of War Patterson secured a
wage rate increase ($0.50 to $0,575
an hour) for common labor at the
Clinton Engineer Works and, a year
later, one for skilled maintenance
workers, especially electrical repair-
men and machinists. The latter in-
crease was necessary because these
workers could earn a higher wage at
construction jobs, at IVA installa-
tions, and at some of the major war
industries in the local area than as
employees of the atomic plants.^ ^
Civilian and Military Personnel
Although most Manhattan workers
were employees of project contrac-
tors, two important groups were not:
2d, 5ih. (ith, and 7ih Svc Cmds, 5 Jul 44, HB Files,
Fldi :A. MDR. I.tr, Maj (.en Ihomas G. lerry (CXi
2d .Svt Cmd) to Ad Secv War Palterson, 10 Jul 44,
HB Files, Fldr «(), MDR. (iroves. Xow It Can Be Told,
p. 99. Du Pout Constr Hist. Vol. 1, p. 65, HOG.
3' .MDH, Bk, 1, \oi. 8, p. 3.4. DASA; Memo, Pat-
terson to (iroves, 14 Feb 44, and Ftr, Patterson to
William H. Davis (WVI.B chairman), 12 Jun 44, HB
Files, Fldr SO, MDR; l.ir, (ireenbaum to Fred M.
\ inson (Ollite oi Ftonomie Stabilization Dir),
26 May 44, and Statement on Requested Increase
in Operating Rates at (IFW, .itt.ulied to covering
Memo, 14 Jun 44, HB Files, Fldr .51, MDR; Du I'oni
Opns Hist, Bk. I. pp. I and 4, H(K).
Military and Civilian Workers at CEW
civil service employees at District
headquarters and in the several area
offices, and military personnel serving
on the District staff, in the area of-
fices, and in the various military units.
Combined numbers of these two
groups, even at the height of project
activities, amounted to considerably
less than 10 percent of the Manhattan
Project's total manpower. But because
many members of these grouj^s held
key positions in administration and
operations, they exercised an infiu-
ence over the course of the atomic
bomb program far out of proportion
to their relatively small numbers.
From the start of its administration
of the project, the Army employed ci-
vilians in staff positions at both the
District and area levels. Cenerally,
they served in positions requiring
special administrative or technical
knowledge and experience, such as
356
MANHATl AN: THP: ARMY AND I HE ATOMIC BOMB
those relating to finance, insurance,
safety, contracts, and office manage-
ment, as well as in jobs that women
could fill. Most were recruited
through regular civil service channels
or were transferred to the Manhattan
Project from other government agen-
cies. When Colonel Marshall formed
the original Manhattan District head-
quarters organization, he primarily re-
cruited civilian employees who were
members of his former Syracuse (New
York) District staff Included in this
group were a number of veteran
Corps of Engineers civilians who, as
the District headquarters expanded,
received military commissions. The
District continued to hire additional
civil service employees, securing
many from other engineer projects,
from other government agencies, and
from the civilian staffs of the other
military services. Project area engi-
neers also followed similar policies in
forming their local administrative
staffs. ^2
For reasons of security and for con-
venience, the District carried its civil-
ian workers on its employment roles
as if they were regular engineer em-
ployees. While this arrangement fa-
cilitated administrative aspects, it sub-
jected the District to all wartime man-
power regulations. For example, the
presidental proclamation of Decem-
ber 1942 suspended the eight-hour
day and that of February 1943 estab-
lished a 48-hour workweek for all
full-time workers in areas of labor
shortage. Consistent with these regu-
lations, the War Department provided
in May that its civilian employees
could work a six-day, 48-hour week,
receiving overtime pay for work on
Sunday or beyond eight hours on a
weekday, and the District adopted this
policy in June, including in it a provi-
sion for overtime work up to sixty-
four hours a week when specific
emergency situations required it. In
actual practice, only lower-salaried
employees received overtime pay.
Higher-paid employees, such as sec-
tion and division chiefs, who put in
overtime did so voluntarily, without
additional compensation.^^
An unforeseen disadvantage of this
administrative arrangement was that
the District also had to conform with
OCE manpower ceilings, as required
by the ASF or the War Department.
Thus in the hectic summer of 1943,
when the project was on the thresh-
old of rapid expansion, OCE person-
nel officials notified General Groves
that the District must reduce its per-
sonnel by some 13 percent. The Man-
hattan commander immediately regis-
tered vigorous objection. General
Styer interceded with OCE officials,
who then arranged to have other
engineer agencies absorb the staff re-
ductions prescribed for the Manhat-
tan District. A year later, OCE per-
sonnel authorities again informed the
District that substantial reduction in
both civilian and military personnel
32 List of Kt'v Personnel, MD Area Offices (ca.
Nov 44), Admin Files, Gen Corresp, 231.001 (I.C),
MDR; Marshall i:)iarv. 21-23 Jun 42, MDR; Org
Charts, VS. P.ngrs Office, MD, 1 Nov 43, 15 Feb
and 10 Nov 44, MDR.
'^Presidental Proclamation, sub: Suspension of
Fight-Hour Faw as to Laborers and Mechanics Em-
ployed by WD on Public Works in the United
States, 28 Dec 42; WD Orders H, sub: Hours of
Work and Overtime (compensation for Civilian Em-
plovees, 14 May 43; MD Cir Ltr, sub: Hours of
Work and Overtime Compensation for Civilian Em-
plovees, 1 1 Jun 43; Memo, Lt Col E. H. Marsden
(Ex Offi Ml3) to Groves, 24 Aug 43. All in Admin
Files, Gen Corresp, 201 (Gen). MDR.
Chart 5 — Estimated Officer Personnel Req^uirements for the
Manhattan District, January 1943
DISTRICT ENGINEER
Colonel
DEPUTY DISTRICT ENGINEER
Colonel
INTELLIGENCE
1 Major
3 Captains
3 Lieutenants
EXECUTIVE ASSISTANT
Lieutenant Colonel
"
CONTROL
1 Lieutenant Colonel
2 Majors
3 Captains
EXECUTIVE OFFICER
(Engineering and Operations)
Lieutenant Colonel
TECHNICAL STAFF
6 Colonels
3 Lieutenant Colonels
2 Majors
MATERIALS PRODUCTION
1 Lieutenant Colonel
4 Majors
5 Captains
4 Lieutenants
SPECIAL ACCOUNTS
1 Major
1 Captain
5 Lieutenants
LABOR RELATIONS
1 Major
2 Captains
1 Lieutenant
EXECUTIVE OFFICER
(Administration)
Lieutenant Colonel
PROTECTIVE SECURITY
1 Lieutenant Colonel
1 Major
5 Captains
2 Lieutenants
ENGINEERING AND OPERATIONS
1 Lieutenant Colonel
1 Major
2 Captains
UNIT CHIEFS
3 Lieutenant Colonels
3 Majors
6 Captains
DESIGN AND RESEARCH AREAS
2 Lieutenant Colonels
6 Majors
11 Captains
5 Lieutenants
CONSTRUCTION AREAS
9 Lieutenant Colonels
22 Majors
27 Captains
25 Lieutenants
PRIORITIES AND ALLOCATION
1 Major
2 Captains
2 Lieutenants
LEGAL AND CONTRACT
1 Lieutenant Colonel
2 Majors
4 Captains
" Also one majoi
'Also one captain as assistant.
Soiirre: Org Chan, U.S. Engrs. Ollicc. Ml). 2:i Jan 43. OROO.
ADMINISTRATION AND FINANCE
1 Lieutenant Colonel
1 Maior
2 Captains
1 Lieutenant
Total Estimated Officer Person
8 Colonels
26 Lieutenant Colonels
49 Majors
74 Captains
48 Lieutenants
MANPOWER PROCUREMENT
357
were necessary. Lt. Col. Charles
Vanden Bulck, head of the District's
Administrative Division, instructed
area office and division and section
heads to initiate appropriate meas-
ures, such as reassignment or separa-
tion of unsatisfactory workers and
elimination of duplication of func-
tions. By this time some personnel re-
duction in those staffs primarily con-
cerned with site development and
design and building of production fa-
cilities was possible, but operational
activities were expanding rapidly, re-
quiring enlargement of District and
area staffs overseeing plant oper-
ations and bomb development. The
net result was continued growth in
total personnel, a trend that was to
persist until the fall of 1945. ^"^
Militarization of the atomic project
did not begin until the* summer of
1942 (Chart 5). The first group of
military personnel came to the newly
activated Manhattan District as part of
an OCE authorization of sixty-two of-
ficers, assigned primarily to fill key
supervisory and administrative posts
in the District headquarters and area
offices. For many months, however,
the number of active duty personnel
remained small (as late as December
1943, no more than four hundred).
Subsequently, additional authoriza-
tions from OCE, ASF, and, in certain
special cases, the Secretary of War
himself, furnished a continuing inflow
3" Memo. F. M. S. [Col Frank M. Smith, Asst to
ASF chief of stafT] to Styer, 29 Jul 43, MD, 1942-45,
Somervell Desk File, ASF. MD Bull, Vanden Bulck
(for Dist Kngr) to OHicc, Div, and Sec Heads, sub:
Decrease in Personnel, 19 Aug 44, Admin Files, MD
Directives, MDR. MDH, Bk, 1, Vol. 12, "Clinton En-
gineer Works," App. C2 (Chart, Kmployment at
CEW); Bk. 4, Vol. 6, "Operation," App. B8 (C:hart,
Employment at HEW); and Bk. 8, Vol. 1, App. B7
(Chart, Employment at Eos .Alamos Lab), D.ASA.
of officers and warrant officers. 4 he
majority came under a series of sup-
plementary bulk allotments, but some
were also included in personnel au-
thorizations for military police, coun-
terintelligence. Women's Army Corps
(WAC),^^ and other units assigned to
the project. The District procured
some hard-to-secure specialists — for
example, patent attorneys, engineers,
chemists, and physicists — by obtaining
authorization to have naval officers
assigned to Manhattan and to com-
mission qualified civilians directly.
The District's Military Personnel Sec-
tion in Oak Ridge remained in charge
of the procurement and central ad-
ministration of all project-commis-
sioned personnel throughout the war,
numbering more than six hundred by
the summer of 1945 and stationed in
many different parts of the United
States as well as in several overseas
areas. ^®
^^On 30 Sep 43, the Women's Army Auxiliary
Corps became a part of the Army of the United
States and received its new official designation.
Women's Army Corps. See Mattie E. Treadvvell, The
Women's Army Corps, U.S. Army in World War II
(Washington, D.C.: Government Printing Office,
1954) pp. 218-30.
36 MDH, Bk. 1, Vol. 8. pp. 7.3-7.4, 7.8, 8.1-8.3,
App. A13, and \'ol. 14, "Intelligence & Security,"
pp. 7.5-7.7, DASA; Org Charts, U.S. Engrs Office,
MD, Aug 43-Jan 45, MDR; List, sub: MD Offs on
Duty at Los Alamos and Their Duties, 6 May 44,
Incl to Memo, Ashbridge to Groves, 14 Jun 44,
Admin Files, Gen Corresp, 201 (Gen), MDR: Memo,
Groves to CG SOS, sub: Org and .Assignment of Mil
Orgs, 28 Jan 43, Admin Files. Gen Corresp, 322
(Los Alamos), MDR; Memo, Groves to CG ASF,
sub: Spec W.AAC Det, MD, 31 Mav 43, Admin Files,
Gen Corresp, 323.42 (LC), MDR; Memo, (iroves to
CG ASF, sub: Prov MP Det No. 1, 17 Mar 43,
Admin Files, Gen Corresp, 231.001, MDR; Memos,
Greenbaum to Bundy, sub: Patent OfTs, 21 Feb 44,
Groves to Bundy, same sub, and Personnel Div, Gl,
to LAG, sub: Procurement Objective for (>hief of
Engrs, 13 Apr 44, HB Files, Fldr 24, MDR; Memo,
Bundy to Maj Gen Stephen G. Henry, G-1 (approv-
ing direct commissioning of second lieutenants for
MD), 1 Sep 44, HB Files, Fldr 8, MDR.
358
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Beginning in 1943, the District reg-
ularly requisitioned military personnel
to carry out functions that, for rea-
sons of security or lack of civilian
manpower, could not be performed
by civilian employees. In January,
General Groves requested the Serv-
ices of Supply (ASF's earlier designa-
tion) to allot military police, medical,
and veterinary personnel for a special
military police company to protect
and service the highly secret oper-
ations at Los Alamos. In March, he
asked for additional military person-
nel to form provisional military
police, medical, and engineer detach-
ments to be used at the other major
project sites. The ASF promptly au-
thorized the requested military man-
power, providing for their activation
and training at appropriate training
centers of the 6th and 8th Service
Commands. ^"^
When rapid expansion created an
urgent need for additional military
personnel to handle classified mail
and records. Groves requested the
ASF to provide Manhattan with a de-
tachment from the Women's Army Aux-
iliary Corps (WAAC) to perform that
type of clerical work. The processing
of mail and records at District head-
quarters, as well as at the Clinton,
Hanford, and Los Alamos installa-
tions. Groves pointed out, provided
such a broad view of project activities
that it must be kept in the hands of
personnel under strict military con-
trol. The 1st Provisional WAAC De-
tachment was activated at Fort Sill,
Oklahoma, on 17 April, and a few
days later an officer and six auxiliaries
reported to Los Alamos. In June, the
ASF authorized Manhattan's request
for a total of three WAAC officers
and seventy-five enlisted women, and
in subsequent months granted the
District substantial WAG allotments.
In the period from 1943 through
1945, those WAG members assigned
to units at Clinton, Hanford, Los
Alamos, and other project installa-
tions worked not only as handlers of
classified material but also at a great
variety of other jobs, some of them
highly technical and scientific. ^^
By spring of 1943, project leaders
were anticipating problems in recruit-
ing and holding younger technicians
and scientists who were subject to
military service. The obvious solution
was to constitute a military organiza-
tion within the Manhattan Project to
which these technicians and scientists
could be assigned. Accordingly, in
May, the District established a Special
Engineer Detachment (SED) and re-
quested ASF authorization for an al-
lotment of 675 men to form a head-
quarters element and four separate
companies. Recruiting began in late
1943 through the Army Specialized
Training Program, the National
Roster of Scientific and Specialized
Personnel in Washington, D.G., and
^^ Memos, Groves to CG SOS, subs; Org and As-
signment of Mil Orgs, 28 Jan 43, and Prov Engr Det
No. 1, 11 Mar 43, 322 (Los Alamos) and 200.3, re-
spectively; Memos, Groves to CG ASF, subs; Prov
Engr Det No. 1, 29 Jul 43, and Prov Med Det No. 1,
12 and 17 Mar 43, 200.3 and 231.001, respectively.
All in Admin Files, Gen Corresp, MDR.
'« Memo, Groves to CG ASF, sub; Special WAAC
Det, MD, 31 May 43 (and appended note, dated 2
Jun 43 and signed by Col F. M. Smith); Ind to ibid.,
Brig Gen Russel B. Reynolds (Mil Personnel Div
chief, ASF) to Chief of Engrs, 3 Jun 43; Memo,
Marsden to Groves, sub; Spec WAC Det, MD,
29 Dec 43. All in Admin Files, Gen Corresp,
323.42 (LC), MDR. Marsden Diary, 29 May and 3,
9, 17 Jun 43, OROO. Treadwell, Women's Arrny
Corps, pp. 327-29, Unit Hist, WAC Det, 9812th
Tech Svc Unit, CE, MD, copy in WAC Files, CMH.
MANPOWER PROCUREMENT
359
Women's Army Corps Detachment at CEW
universities and colleges in all parts
of the country. Personnel officials also
screened and interviewed qualified in-
dividuals in Army camps and directed
inquiries to other government agen-
cies and private industrial firms con-
cerning former employees who were
in the military service. ^^
The District assigned most of its
scientific and technical enlisted per-
sonnel to the SED unit. In those in-
stances, however, when the District
had to place enlisted men on duty
with private contractors or in small
communities, it transferred them to
the Enlisted Reserve Corps. This per-
mitted the men to work in an incon-
spicuous civilian status yet to remain.
'HIDH, Bk. 1, \()l. «. pp. 7.:^-7.4 and App. CIS.
DASA: Msg, Marshall to Nichols. 18 Mav 4:5, Admin
Files. C;en Corresp. 200.3 (SKI)), MDR.
for reasons of security, under military
control. It also reduced the cost of
military administration for small num-
bers of enlisted personnel stationed
in outlying areas. '*°
In providing for the efficient and
adequate administration of Manhattan
Project enlisted personnel, whether
in scientific and technical, clerical,
housekeeping, or military intelligence
and security units, the District en-
countered special problems. Some of
these stemmed from the rapidity of
increase in enlisted personnel — from
several hundred in early 1944, to
twenty-six hundred by year's end, and
continuing up to a maximum total of
^niDH. Bk. 1, \'ol. 8. p. 7.4, DASA; Minio, I.i
Col Curtis A. Nelson (Personnel Div chief. Ml)) to
(movcs. siih: Knlistcd Reservists, 29 Aug 45, Admin
Files, Ck-n Corresp, 220. .S, MDR.
360
MANHA riAN: IHE ARMY AND IHK AIOMIC BOMB
■^■1 ... \
m
N
1 ;
1
f . ^1 , i 1 :.
^arr^ ^
Enlisted Men at CEW During Off-Duty Hours, studying I'.S. Aniwd Forces
Institute courses
about five thousand by the fall of
1945. Other problems arose from the
wide geographical distribution of en-
listed personnel, making any effort to
achieve effective centralized adminis-
trative control from District head-
quarters in Oak Ridge impracticable/^
Under normal circumstances, a so-
lution would have been attachment of
the District's scattered military units
to the various area service commands
for purposes of administration, but
such arrangements presented a secu-
rity risk. Consequently, the district
engineer assigned responsibility for
administering enlisted personnel to
"' Ihe organizaiion, procurement, and administra-
tion of the project's military intelligence and seciiri-
tv units are discussed in detail in i.h. XI. MDH,
Bk. 1. \'ol. 8, pp. 7.6-7.8 and App. AKl DASA.
the commissioned officers at the
larger sites and to the experienced
noncommissioned officers at the re-
maining project locations, making
them directly responsible to the Dis-
trict's Military Personnel Section in
Oak Ridge. Administrative policies
varied, depending upon conditions
prevailing at each particular location.
The policy on rations and quarters
for enlisted personnel is illustrative.
Enlisted men at all areas except Oak
Ridge, Los Alamos, and Richland re-
ceived a rental allowance in lieu of
quarters. The same was true for ra-
tions, except at Los Alamos and Rich-
land. Similarly, WAC enlisted person-
nel received a monetary allowance in
lieu of both quarters and rations.
MANPOWER PROCUREMENr
361
^sm^^'^^^^^^
The Large Troop Contingent at Los Alamos on Parade
except at Oak Ridge, Richland, Los
Alamos, and New York; those at Oak
Ridge and in New York lived in gov-
ernment quarters and received a daily
monetary allowance in lieu of
rations. ^^
In early 1945, the OCE, which had
been serving the project as a higher-
echelon channel for manpower pro-
curement and organization, provided
the Manhattan District with a military
designation: 9812th Technical Service
Unit, Corps of Engineers, Manhattan
District. Effective on 1 February, most
of the uniformed personnel, including
SED units at Clinton, Hanford, and
Los Alamos, were assigned to the
"Ibid., pp. 7.6-7.10, DASA; Memo, Col Elmer K.
Kirkpatrick, Jr. (Dep I)i.sl Kngr), to Groves, .sub: Mil
Personnel at Oak Ridge, 19 Oct 44, Admin Piles,
(;en Corresp, 319.1 (Rpts), MDR.
9812th. At Los Alamos, however,
military police, WAC, and other serv-
ice elements continued to be assigned
to the 4817th Service Command Unit,
an element of the 8th Service
Command. ''^
Success in the procurement of tens
of thousands of new employees with a
variety of skills and talents, perhaps
unmatched by any other World
War II program, was directly attribut-
able to the personnel policies and or-
ganization developed by the Army for
the Manhattan Project in late 1942
and 1943. General Groves and the
District personnel staff had perse-
vered during the period of severe
"MDH, Bk. 1, \'ol. 8, p. 7.7, and Bk. 8, Vol. 1,
pp. 7.3.-7.8, DASA; Memo, Nelson to Groves
(through his assistant. Brig Gen Thomas F. Farrell),
22 May 45, Admin Files, Gen Corresp, 200.3, MDR.
362
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
manpower shortages and — by com-
bining effective use of existing man-
power procurement facilities in the
OSRD, the War Department, and the
War Manpower Commission with
those developed for the Manhattan
District — were able to meet substan-
tially all of the atomic program's re-
quirements for scientific and technical
workers, skilled and unskilled indus-
trial labor, and civil and military per-
sonnel on schedule. Consequently, by
late 1944, with most of the manpower
piocurement needs attained, project
officials could shift their primary
focus to conservation of the work
force in face of such potentially erod-
ing factors as the demands of Selec-
tive Service and labor union organiz-
ing activities.
CHAPTER XVII
Manpower Conservation
In a wartime environment of per-
sistent labor shortages and extensive
labor turnover on most jobs, the
Manhattan Project's problems of
maintaining an adequate work force
almost matched those of manpower
procurement. In fact, for a variety of
reasons, the District had to contend
with an above-average rate of employ-
ee turnover, Selective Service de-
mands, and work stoppages. Fortu-
nately, many of the measures adopted
to recruit scarce workers, such as
granting special fringe benefits and
paying above-average wage rates,
also helped retain employees on
the job. These did not solve all
the manpower-depleting problems,
however, and the Army had to under-
take a number of special measures to
conserve the work force.
Labor Turnover: The Problem
and Its Cure
Turnover of construction workers
at the Clinton and Hanford sites
during the first half of 1944, a period
of peak employment of this type of
labor, averaged about one-fifth of the
total construction work force, a rate
considerably above that at compara-
ble wartime projects elsewhere in the
United States. Ihe rate was slightly
higher at Hanford than at Clinton —
some 20 percent as compared with 17
percent. Turnover was less serious
among plant-operating employees,
but still sufficiently high to constitute
a continuing manpower problem.
Thus at the period of peak operations
during the summer of 1945, the gase-
ous diffusion plant had an average
turnover of about 13 percent a month
and the electromagnetic and plutoni-
um production plants each a little
over 6 percent a month. ^
Seeking to reduce excessive labor
turnover, Manhattan administrators
undertook aggressive countermeas-
ures. As a first step, the District estab-
lished exit interview offices at its area
employment centers near Manhattan
installations. Each employee leaving
the project — whether voluntarily, for
cause, or as a result of reductions-in-
force — was encouraged to have an
exit interview with District personnel
officials. Through this means they
were able not only to gain an insight
'MDH, Bk. 1. \<)1. 8, ■Personnel." p. 3.1 and
Apps. A5 ((Jhail, MD Labor rurno%er)-A6 (Ciraphic
Experience of Principal MD Projs in Labor lurnov-
er. Absenteeism, etc.), DASA; Fairchild and Gross-
man, Arms and Induslrial Manpower, p. 141 (Table 2,
Monlhiv Labor lurnover Rate Per 100 Kmployees
in Aircraft, Munitions, and Nonmunitions indus-
tries: 1943-44).
364
MANHAIIAN: IHE ARMY AND 1 HE AIOMIC BOMB
into the nature of the employees'
major complaints but also, in many
instances, to persuade them to stay
on the job. ^
Ranking high on the employees' list
of complaints was their dissatisfaction
with employment conditions, includ-
ing inadequate wages, excessive
hours, and lengthy commuting dis-
tance to and from the job site. For
example, in mid- 1944, 13 percent of
the construction workers voluntarily
leaving jobs at Hanford and 14 per-
cent of those at Clinton cited some
aspect of employment conditions as
the reason for their departure. An-
other recurring complaint concerned
living conditions, with more workers
in 1944 finding these unsatisfactory at
Clinton than at Hanford. Surprisingly
large numbers of workers also left to
take jobs they viewed as better than
the ones they had held on the atomic
project. That so many workers could
do this was indicative of a major un-
derlying problem in maintaining a
work force — the fact that for much of
the time in 1943 and 1944 there were
more jobs available in the areas near
the atomic installations than there
were qualified workers to fill them.^
Analysis of data accumulated in the
exit interviews indicated that most
project employees were interested
primarily in earning the highest
hourly wages possible. Accordingly,
District manpower authorities took
steps to make Manhattan wage rates
competitive, if not better, than those
on other wartime projects. Working
through the War Manpower Commis-
sion, the National War Labor Board,
and other manpower agencies, they
secured significant adjustments in
Manhattan wage scales, bringing them
up to the pay levels of competing
projects. Exit interview data also re-
vealed that project workers did not
object to long hours if they received
overtime pay for time put in beyond
the regular workweek. For example,
when Du Pont in the summer of 1943
reduced the workweek on construc-
tion jobs at Hanford from fifty-eight
to forty-eight hours, eliminating most
overtime, workers began leaving at a
greatly accelerated rate. Only when
General Groves personally inter-
vened, directing Du Pont to extend
the workweek to fifty-four hours, did
employee turnover decline to an ac-
ceptable rate.'*
4 he frequency of complaints about
living conditions made it evident that
new community facilities were needed
at Clinton and Hanford. District offi-
cials began with a renewed emphasis
on securing greater cooperation from
the leaders of existing communities
adjacent to the sites in the provision
of housing, commercial and recre-
ational facilities, transportation, and
the other more urgent requirements
of project workers temporarily resid-
ing in those communities. At the
same time, the District made every
effort to speed up construction of
housing and other facilities in the
towns of Oak Ridge and Richland.^
While the District could overcome
some glaring deficiencies in employ-
ment and living conditions, it could
2MDH, Bk. 1, Vol. 8. pp. 3.1-:i2. DASA.
3 Ibid., App. A5. DASA.
^Sialcnitnt on Requested Increase in Operating
Rales at C^linton Engineer Works, attached to cover-
ing Memo. 14 )un 44, HB Files. Fldr 51, MDR;
MDH, Bk. 1, Vol. 8, p. 3.3, DASA.
•\See Chs. XXI and XXII for a more detailed dis-
cussion on the development of community facilities
and relations.
MANPOWER CONSERVATION
365
not hope to provide the comforts and
conveniences available in long-estab-
lished, thickly populated communi-
ties. District officials, however, tried
to inculcate great toleration and ac-
ceptance among project workers for
the unavoidable hardships and incon-
veniences. This was the goal, for ex-
ample, of an extensive campaign
begun in the summer of 1944 to raise
the morale of the work force.
Through public media — stories in
company newspapers, strategically lo-
cated billboards and posters, and film
trailers shown in local theaters — the
District personnel office circulated
materials designed to appeal to the
workers' sense of patriotism and their
pride in contributing to the comple-
tion of a difficult job under adverse
conditions.^
Despite these countermeasures, ab-
senteeism and labor turnover contin-
ued to rise in 1944. After consultation
with officials of the War Manpower
Commission, District manpower au-
thorities decided to dispatch special
investigative teams to Clinton and
Hanford. These teams — each com-
prised of a representative of the Man-
power Commission, a labor officer
from the Army Service Forces (ASF)
headquarters, and an officer from the
District staff— conducted thoroughgo-
ing labor surveys of several weeks'
duration.'^
Rather surprisingly, the Clinton
team came up with a recommendation
that no special efforts be made to
solve the turnover problem. They re-
ported that the amount of absentee-
ism and trirnover at Clinton was
indeed high; in fact, much higher
than at Hanford. Nevertheless, the
team members felt that District man-
power authorities had progressed so
far in developing good labor relations
and in providing suitable living condi-
tions and community facilities that the
problems with the work force no
longer posed a threat to completion
of the project. Further confirmation
of the optimistic report came from
the chief of the Labor Branch of the
ASF's Industrial Personnel Division,
Lt. Col. John K. Collins. Wishing to
consult with the team members on
their findings and to assess the situa-
tion firsthand, Collins made an in-
spection visit in mid-May. He con-
curred that facilities for workers were
"uncommonly good," and discovered
that the high rate of absenteeism and
turnover indicated in the team's sta-
tistics was not primarily the result of
the construction workers' dissatisfac-
tion with working and living condi-
tions but more directly attributable to
the fact that many of them came from
nearby farms and periodically had to
take time off to do farm work.^
While lacking the glowing optimism
of the labor survey reports on Clin-
ton, the report from the Hanford
team was highly commendatory of
efforts made to achieve the best facili-
ties feasible under rugged circum-
stances. The team considered em-
ployment conditions comparable with
those on similar heavy construction
projects in progress, and pointed out
«MDH, Bk. 1, Vol. 8, pp. 3.3-3.4 and App. B8
(Documents Illustrative of Use of Public Media lo
Curtail Job Turnover and Absenteeism), DASA.
' Ibid., Bk. I, Vol. 8, pp. 3. .5, DASA.
8 Lir, Maj L. Dale Hill (MD member of labor
survev team) to Dist Kngr, sub: Labor Survey at
CEW, 23 May 44, copy in MDH, Bk. 1, Vol. 8, App.
BIO, DASA; Memo, Collins to Ciroves, sub: Visit to
CEW (16-17 May 44), 22 May 44, HB Files, Fldr 79
(Jack Madigan), MDR.
366
MANHATTAN: 1 HE ARMY AND THE ATOMIC BOMB
the various ways in which manage-
ment had endeavored to ehminate the
more trying and irritating inconven-
iences. Chief causes for absenteeism
and labor turnover, the team conclud-
ed, were rumors that misrepresented
conditions at Hanford and the recruit-
ment of many older, inexperienced,
and less physically able employees
who could not readily adjust to the
demands of the work. The team rec-
ommended that both the War Man-
power Commission and the United
States Employment Service could
assist in reducing labor turnover by
taking steps to curb unsubstantiated
rumors and making greater efforts to
screen out poor risks among job
applicants.^
As building of the Clinton and
Hanford plants neared completion,
the project's need for construction
workers declined. Concerned about
the disrupting effect of large-scale re-
ductions-in-force, the District imple-
mented a policy of recruiting the op-
erating staffs from among employees
on the construction work force. Be-
cause these jobs were more secure
and employment and living condi-
tions had greatly improved, the rate
of turnover and absenteeism among
plant-operating employees was much
less than among construction work-
ers. The District, nevertheless, contin-
ued a vigorous program of manpower
conservation into the postwar period.
The most crucial period of plant op-
eration came in the first half of 1945,
and personnel supervisors constantly
had to counteract the tendency
among employees to relax their ef-
forts as Allied victory over the Axis
powers seemed assured. ^°
Special Problems With the Selective
Service System
Operation of the Selective Service
System created special problems in
manpower conservation for the Man-
hattan Project. Although other major
wartime industrial enterprises experi-
enced similar problems, certain fac-
tors made Manhattan less able to tol-
erate losses from its civilian work
force to military service. Because of
the unique and complex technology
involved in many of its operations,
the project employed a higher per-
centage of workers, especially among
its scientists and technicians, who had
indispensable and often irreplaceable
skills. Also, because of the enormous
urgency of the bomb development
program, the project faced an almost
continuous series of construction and
production deadlines that could be
met only if key employees at all levels
could be kept on the job. Finally, be-
cause of the highly secret nature of
project activities, Army administrators
had to exercise great care that com-
pliance with Selective Service regula-
tions did not result in serious
breaches of security. ^ ^
Faced with these unusual problems,
the Manhattan District had to develop
special measures for dealing with the
Selective Service System to prevent
an unacceptable erosion of its civilian
9 Rpt, Spec W'MC-WD I earn Assigned to HEW
Proj (prepared by Ned McDonald, W'M(-, Maj I. B.
Cross, Jr., ASF, and Maj R. I. NewccMTib, CE),
20 Jun 44, copy in MDH, Bk. 1, Vol. 8, App. B9,
DAS A.
10 MDH, Bk. 1, Vol. 8, pp. 3.5-3.6 and .Apps. Al,
All, A6, DASA.
1 ' Selective Service System, Industnal Deferment,
Special Monograph No. 6, \'ol. 1 (Washington.
D.C.: Government Printing Oflice, 1948), pp. 1-2.
MANPOWER CONSERVAIION
367
employees. The civilian force was
comprised of those employed by
project contractors and civil servants
assigned to the District headquarters
or area offices. The first category of
workers constituted the greater prob-
lem in terms of Selective Service poli-
cies, because this group far outnum-
bered their federal counterparts; the
second category of workers was sub-
ject to the somewhat modified Selec-
tive Service regulations that governed
all civil service employees in World
War II. Because Selective Service reg-
ulations generally prohibited group
deferments, the Manhattan Project, as
did every other wartime employer,
dealt with its draft problems in terms
of the case of each individual worker
and mostly at the level of the local
Selective Service Board. From the ad-
ministrative standpoint, especially that
of security, this approach greatly com-
plicated the draft problem for District
manpower authorities because it
meant they had to negotiate with hun-
dreds of different local boards. And
in each case they had to decide
whether to permit a particular em-
ployee to be inducted into service, to
request a delay in his induction until
he could be replaced, to seek his tem-
porary or permanent deferment, or to
have him inducted and then assigned
to a Manhattan military unit, such as
the Special Engineer Detachment. ^^
Until late in 1943, when major
changes occurred in draft regulations,
manpower requirements of the Selec-
tive Service System did not present a
serious threat to the project. Conse-
quently, the District placed a priority
on maintaining security, rather than
obtaining deferments for its person-
nel. Instead of setting up a special
staff, the District delegated to project
contractors the task of resolving the
draft problems of their employees
and limited its intervention in Selec-
tive Service problems to the relatively
few cases involving its own govern-
ment employees. This policy was gen-
erally feasible as long as Selective
Service regulations exempted a large
body of manpower for family depend-
ency. Project contractors hired most
of their workers from this group and
also could usually secure replacement
for those employees who were drafted
from this reservoir of manpower. In-
evitably, there were some exceptions.
For example, uniquely qualified scien-
tists and technicians could not be re-
placed by members of any exempted
class. In these instances. District man-
power officials, with strong support
from Secretary Stimson, intervened
with Selective Service authorities to
obtain deferments. ^^
After the Japanese attack on Pearl
Harbor and America's entry into the
war, the Selective Service had moved
steadily toward inducting men from
hitherto deferred classes. By late
1943, the need for additional man-
power for the armed forces was so
critical that the Selective Service in-
formed local boards to consider draft-
ing fathers as of 1 October. Within
two months, following passage of
congressional legislation extending
'2 MDH, Bk. I. Vol. 8, pp. 6.6-6.15. DASA; Indus
Irial Deferment, pp. 231-32.
'3 MDH, Bk. 1. Vol. 8, pp. 6.6-6.15, DASA; Se-
lective Service System, [)ependency Deferment, Special
Monograph No. 8 (Wa.shington, D.C.: Ciovernment
Printing Office, 1947), pp. 33-51; Ltrs. Secy War to
Chairman, WD Central Deferment Board, 8 Mar 43,
and Secy War to Maj Cen Lewis B. Her.shey (Selec-
tive Sv( Sv.stem Dir), 1 Mav 43, Admin File.s, Gen
Corre.sp, 231.1. MDR.
368
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
and ratifying this policy, the atomic
project faced the prospect of losing
thousands of key employees at the
very time when its own manpower
needs were reaching a peak. The
draft regulations also placed in ques-
tion the occupational deferments of
many younger scientists, technicians,
and skilled workers who had no de-
pendents, for public opinion consist-
ently favored selection of younger
men without family responsibilities.^'*
To avert the deleterious effects of
any manpower losses, the District
abandoned its earlier hands-off policy
and assumed a more decisive role in
draft matters by reorganizing Selec-
tive Service functions. In late 1943,
control over deferment procedures
through the District was centralized at
the Oak Ridge headquarters under
administration of a newly formed Se-
lective Service Section. In December,
the section took over the Selective
Service functions of the former Clin-
ton Area Engineers Office. Shortly
thereafter, in support of its more
active participation in draft matters,
the District established branch offices
in New York City and Chicago and at
the Hanford Engineer Works, where
the area engineer subsequently
formed a separate section to process
deferments for operating personnel in
the plutonium facilities. Finally, to
assist the District's Selective Service
Section in review of draft cases in-
volving project civil service employ-
ees, the Secretary of War appointed a
regional deferment committee that
was comprised of three commis-
sioned officers from the Manhattan
District. ^^
Organized and functioning much
like a state Selective Service head-
quarters, the District's Selective Serv-
ice Section instituted a variety of
measures that facilitated the prompt
resolution of draft problems. It re-
viewed each draft case and advised
the district engineer on procedures to
be followed in its resolution, and also
regularly issued to project contractors
and area engineers circular letters
containing all pertinent Selective
Service information allowable within
the security requirements of the
project. Then in early 1944, under
the so-called West Coast Plan that
provided for deferment of workers in
critical war industries, the section suc-
cessfully obtained for project contrac-
tors at thirteen Manhattan estab-
lishments (including the Metallurgical
Laboratory, Clinton Laboratories,
Hanford Engineer Works, and the
Kellex Corporation) authorization to
defer those employees essential to
maintain construction and production
schedules. These measures contribut-
ed to the relief of state Selective
Service directors from personal re-
sponsibility for Manhattan District de-
ferments granted earlier — deferments
that, under the pressure of manpower
shortages in 1944, state directors, not
really understanding why atomic
project workers were essential, were
more and more prone to question. ^^
i*MDH, Bk. 1, Vol. 8, pp. 6.6-6.11, DASA; De-
pendency Deferment, pp. 53-58.
15 Org Charts, U.S. Engrs Office, MD, 1 Jun,
28 Aug, 10 Nov 44 and 26 Jan 45, Admin Files,
Gen Corresp, 020 (MED-Org), MDR; MDH, Bk. 1,
Vol. 8, pp. 6.15-6.17, and Bk. 4, Vol. 5, "Construc-
tion," pp. 4.18-4.19, DASA; Industrial Deferment, pp.
243-45.
'«MDH, Bk. 1, Vol. 8, pp. 6.6-6.11 and Apps.
A9-A11, DASA; Industrial Deferment, pp. 112-13 and
166-69.
MANPOWER CONSERVATION
369
A new threat to project manpower
needs arose in January, when the Se-
lective Service began enforcing a
more stringent pohcy on occupational
deferments for younger men (general-
ly under age thirty). Administrators at
Los Alamos, for example, predicted
that such a policy would be disastrous
for the entire project. Wasting no
time, the District's Selective Service
Section began providing local draft
boards with detailed data on the edu-
cational background, work experi-
ence, and contributions to the project
of thousands of its younger employ-
ees. At the same time, it also urged
project contractors to actively sup-
port continued deferment of workers
classified as disqualified for military
service (4-F) or for limited service
(LA-1). By the time the war ended,
the District had approved and for-
warded to the Selective Service
System more than thirty-eight thou-
sand original deferment cases and re-
newed more than ten thousand of
these cases. In addition, area engi-
neers had directly processed thou-
sands more.^"^
In the period after the war, some
critics asserted that the Selective
Service System had "greatly crippled"
the atomic project. Manhattan admin-
istrators disagreed, however. Accord-
ing to Colonel Nichols, for example,
in the approximately sixty thousand
deferment actions handled up
through June 1946, "no one has been
lost to the project whose services
i^MDH, Bk. 1, Vol. 8, pp. 6.11-6.13 and App.
A 12, DASA; Ltrs, Arthur L. Hughes (Personnel Dir,
Los Alamos Lab) to Samuel T. Arnold (MD Con-
sultant for Tech Personnel), 15 Jan 44, and Oppen-
heimer to Groves, 8 Apr 44, Admin Files, Gen Cor-
resp, 201 (Gen), MDR. Sec also Memo, unsigned
(probably Groves), ca. Apr 44, HB Files, Fldr 105,
MDR,
were essential." ^® Certain Selective
Service measures had threatened key
project operations, but the District's
effective policy of energetic counter-
action had enabled Manhattan offi-
cials to avert any serious interference
with the progress of the bomb devel-
opment program.
Labor Relations: Union Activities
and Work Stoppages
Employer-employee relations was
an important factor in the conserva-
tion of the Manhattan Project work
force. ^^ Given the industrial character
of its activities, these relations natu-
rally centered on questions of union-
ization and unions. But unusually
stringent security requirements great-
ly circumscribed the extent to which
normal labor activities could be pur-
sued. Nevertheless, consistent with
the War Department policy estab-
lished in the early months of the war,
the Army permitted workers on the
atomic project to carry on union ac-
tivities as long as they did not inter-
fere with achievement of the major
^* Statement by Nichols, 7 Jun 46, Admin Piles,
Gen Corresp, 201 (Gen), MDR.
1^ Section based on MDH, Bk. 1, Vol. 8. pp. 4.1-
4.14 and Apps. A2 (Table, Manhattan Proj Contrac-
tors' Employment, Aug 42-Dec 45) and A7 (Table,
Analysis of Work Stoppages-Constr Contractors);
Bk. 4, Vol. 6, "Operations," p. 13.3; Bk. 8, Vol. 1,
"General," p. 6.62. All in DASA. Fairchild and
Grossman, Army and Industrial Manpower, pp. 72 and
129-30. Rpt, John H. Ohly, sub: Formulation of
Labor Policies To Govern Opn of CEW, 10 Nov 44;
Memo, Ohlv to Brig Gen Edwin S. Greenbaum
(Und Secv War's labor adviser), ca. 11 Nov 44;
Memos for File, Ohly. sub: MD, 13, 18, and 21 Dec
44; Ltr, A. C. Joy (Act Dir, Tenth Region, NLRB,
Atlanta, Ga.) to Und Secv War, sub: Roane-Ander-
son Co., Case lO-R-1369, 28 Nov 44. All in HB
Files, Fldr 80, MDR. Memos, Und Secv War to
Bvrnes, 27 and 30 Nov 44, HB Files, Fldr 51, MDR.
Marsden Diary, 29 Nov 44, OROO.
370
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
objectives of the program. This pohcy
excluded, of course, resorting to
strikes and any other labor activities
that would interrupt war production
or compromise security.
To deal with Manhattan Project
labor relations problems, the Army
relied extensively on experience
gained, starting with the period of
emergency preparedness in 1940-41,
as an employer of thousands of work-
ers in arsenals and depots and on
Corps of Engineers construction
projects and as administrators of gov-
ernment-owned, contractor-operated
(GOCO) plants that produced muni-
tions of war. From this experience
the Army learned that the most effi-
cient means for recruiting workers
was through those unions affiliated
with the Building and Construction
Trades Department of the American
Federation of Labor (AFL). This
method minimized union-organizing
and -recruiting activities on the job,
because the Army and the AFL had
agreed that contractors must main-
tain a closed-shop policy.
In the event that unions would be
unable to satisfy Manhattan's quotas
for skilled and unskilled workers, the
Army-AFL agreement permitted con-
tractors to procure them elsewhere,
with the provision that they join the
appropriate union before starting
their employment. When the AFL la-
borers union could supply only a
fraction of the quota needed at the
CHnton Engineer Works, the contrac-
tors— working with District manpower
authorities — turned to the War Man-
power Commission and federal em-
ployment agencies for recruitment as-
sistance. Recruitment of workers
through government channels, how-
ever, obviated compliance with the
existing policy of union membership.
To have required it. General Groves
pointed out to District personnel
monitoring labor problems, would
mean, in effect, that the government
was subsidizing recruitment for a
labor organization.
The District's efforts to minimize
those union activities likely to impact
negatively on construction and pro-
duction schedules, as well as pose a
threat to security, generally were ef-
fective. But work stoppages — for the
most part, of very brief duration — did
occur. The largest number resulted
from jurisdictional disputes between
crafts. In April 1943, for example,
when electricians and ironworkers at
Clinton disagreed over the handling
of heavy electrical equipment, they
walked off the job. The walkout lasted
two days, during which 522 man-
hours were lost. Some work stop-
pages occurred over discharge or
transfer of employees. Typical was a
case in February 1944, when mem-
bers of the welders union at Hanford
struck briefly to protest transfer of
one of their members to the night
shift, allegedly because of a grudge
between the area superintendent and
the employee. Time lost totaled 171
man-hours.
Dissatisfaction with wage rates and
employment conditions caused a few
work stoppages. Plumbers at Clinton
walked off the job briefly in Decem-
ber 1943 in protest against a rule re-
quiring that they use a parking lot
more than half a mile from the point
where they punched their timecards,
and millwrights engaged in construc-
tion of a plant for the atomic project
at Decatur, Illinois, ceased work for a
few hours in August 1944 in dispute
MANPOWER CONSERVAIION
371
over payment of sliifl time. In one or
two instances where a large number
of key construction employees were
involved (for example, electricians at
C.linton in December 1944), the loss
of man-hours was considerable (in
this case some forty thousand hours).
But quick settlement of most disputes
averted any disastrous slowdown in
the building program.
The District faced far more novel
and complex labor relations problems
in administering the project's operat-
ing employees. Many operating em-
ployees had to be made privy to
highly classified data and equipment,
whereas most construction employees
had no need for secret information.
Typically, too, the atomic project's
unique operating processes were far
more vulnerable, and labor activity
that interfered with operations simply
could not be tolerated. Furthermore,
most operating employees were not
union members and their work did
not fit nicely into any of the usual job
categories.
Most of the commercial and
in dustrial firms and the research in-
stitutions that accepted operating
contracts with the atomic project cus-
tomarily adhered to an open-shop
policy. Du Pont, with major oper-
ational responsibilities at various
project installations, had never been
unionized in its private commercial
operations. The same was true of the
Tennessee Eastman Corporation, op-
erator of the electromagnetic plant at
Clinton. Similarly, most of the univer-
sity contractors were nonunion em-
ployers. Ihere were a few exceptions.
1 he University of Chicago had a writ-
ten agreement with the State, County,
and Municipal Workers of America, a
CIO (Congress of Industrial Organi-
zations) union, but it had little effect
on employee relations at the Metal-
lurgical Laboratory. The University of
California recognized the right of the
Alameda County Building Trades
Council unions to establish pay rates
and conditions of employment for all
maintenance employees hired by the
university.
There were exceptions, too, among
the commercial and industrial con-
tractors. The primary business of
the community service contractors
(Robert E. McKee at Los Alamos, the
Morrison-Knudsen Company in the
Hanford area, and the Oak Ridge-
based Roane-Anderson Company, a
subsidiary of the Turner Construction
Company of New York) was construc-
tion work. They were accustomed to
dealing with the construction unions
and found that they could secure
most of the employees needed for
community operation and mainte-
nance through the AFL Building
Trades unions. A number of the op-
erators of smaller project plants also
normally employed union labor and
continued to do so in carrying out
their Manhattan contracts. The Hou-
daille-Hershey Corporation of Deca-
tur, Illinois, for example, which made
barrier material for the gaseous diffu-
sion process, signed an agreement
with the Building Trades unions.
Also, many of the firms manufactur-
ing equipment and materials for Man-
hattan— such as the Allis-Chalmers
Manufacturing Company, Chrysler
Corporation, and Hooker Electro-
chemical Company — already were
unionized.
For reasons of security. District
manpower authorities frequently had
to substitute for government and
372
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
union officials in carrying on labor re-
lations with nonunion operating em-
ployees. In cases of alleged violations
of the Fair Labor Standards Act and
the Walsh-Healey Act and in the con-
duct of inquiries made by the Fair
B^mployment Practices Committee,
they served in lieu of government
representatives; in the few instances
when operating employee elections
were necessary, they supervised the
balloting; and when federal agencies
took the initiative in requesting an in-
vestigation of employees or when na-
tional labor unions sought to hold
elections, they endeavored to per-
suade the agencies or unions to waive
the security-threatening procedure
and, failing in this, to let Manhattan
carry out whatever procedure was
deemed necessary.
Several unions pressed District
manpower authorities for recognition
as bargaining agents for plant-operat-
ing employees at the major produc-
tion sites. To mediate the issue, each
union filed a petition with the Nation-
al Labor Relations Board and re-
quested a formal hearing. The Inter-
national Brotherhood of Firemen and
Oilers filed the first petition in
August 1944, seeking to represent the
Carbide and Carbon Chemicals Cor-
poration employees who worked at
the gaseous diffusion power plant,
and subsequently the International
Brotherhood of Electrical Workers
joined with the Firemen and Oilers
union in its petition. When the Na-
tional Labor Relations Board sched-
uled a hearing (or 24 October, Dis-
trict authorities promptly intervened
to prevent a serious security threat.
They negotiated with board officials,
who, in the end, agreed to postpone
the hearing. Fhe postponement, how-
ever, was only a temporary victory for
the District, as the mediators indicat-
ed an ultimate hearing on the petition
was mandatory.
General Groves, determined to find
a permanent solution to the labor
problems of plant-operating employ-
ees, turned to War Department l^bor
experts for advice and assistance. As
Groves saw it, the atomic program
had to achieve three objectives: It had
to maintain production schedules; its
operations had to be protected from
sabotage and subversive interference
and from disclosure of information
useful to a foreign power; and it had
to maintain maximum efficiency and
economy. I he Manhattan commander
felt strongly that District labor poli-
cies must be formulated to further
these objectives, which, he frankly
stated, might best be achieved by for-
bidding unions among plant-operat-
ing employees who worked in restrict-
ed areas. This policy, as he visualized
it, would mean exclusion of all out-
side agencies (including the National
Labor Relations and the National War
Labor Boards) and a ban on all types
of union activities. Groves immediate-
ly granted, however, that so restric-
tive a labor policy was probably not
feasible and the District undoubtedly
would have to be satisfied with a com-
promise arrangement. He suggested a
policy that would permit unions, lim-
iting membership in them to employ-
ees of those contractors who had
signed a secrecy agreement, would
forbid outside union representatives,
and would require Army inspection
and control of all union activities. If
disputes should arise that could not
be settled in negotiations between the
contractor and the union, thev would
MANPOWER CONSER\'ATION
373
have to be submitted to the Secretary
of War for arbitration.
War Department labor officials
were in agreement with General
Groves that there was no feasible way
for the Army to deny to the project's
plant-operating employees all rights
to organize. Their views were summa-
rized in a report prepared in Novem-
ber 1944 by John H. Ohly of the
ASF's Industrial Personnel Division.
After conferring with Groves and sev-
eral other District representatives,
Ohly concluded that labor problems
at Clinton were similar to those of the
Army's GOCO plants, but there were
significant differences: the overall ur-
gency of the atomic project, its em-
ployment of several major contractors
at one site, its unusually strict security
requirements, the sensitivity of its
processes to stoppage, and the ex-
ceptionally large percentage of its
workers residing within a military res-
ervation. Yet these differences,
Ohly reported, did not justify deny-
ing plant-operating employees the
right to organize. "The right to join
or associate with others in establish-
ing a union of his own choosing with-
out interference from his employer,"
Ohly noted, was a basic right pos-
sessed by the American working man,
and the War Department consistent-
ly had adhered to the policy of per-
mitting employees in war industries
to continue to exercise that right to
the maximum extent practicable
under wartime conditions, ^o The
extent to which workers at the (Clin-
ton plant would try to organize, Ohly
2° Rpt, Ohiv. sub: Formulalion ol Labor Folic it-s
lo (iovern Opn of CKVV . 10 Nov 44. MDR.
believed, depended largely on the at-
titude of the national union leaders —
William Green, Philip Murray, John L.
Lewis, and their chief subordinates —
toward these efforts. If these leaders
should encourage unionization of the
atomic plants, Ohly was confident
that this labor activity could be ac-
commodated without unduly imperil-
ing the major objectives of the
project.
General Groves was willing to go
along with the view that production
workers should be permitted some or-
ganizing activities, but he opposed
admission of outside union represent-
atives to project areas and the con-
duct of public hearings on petitions
by labor board officials. He did not
succeed, however, in the time gained
through several postponements of the
union hearings, in attaining an agree-
ment for withdrawal of the petition.
Finally, on 24 November, representa-
tives of the National Labor Relations
Board notified the District that under
the law they must act on the petition
and thus scheduled a hearing for
19 December. The Manhattan com-
mander immediately wrote to Lender
Secretary of War Robert P. Patterson:
"We can no longer merely delay
action by NLRB. A definite position
must now be taken. If the cooperation
of the unions could be secured, the
problem would be solved. ... In
view of the nature and importance
of the project, it is not too much
to ask them in furtherance of the
national interest to refrain from union-
izing the Clinton Engineer Works for
the duration. This is the only fea-
sible approach to the problem. No
374
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
rights are denied and no security is
sacrificed." ^^
Groves had expressed his views to
Patterson in the course of responding
favorably to the Under Secretary's
proposal that Manhattan should seek
the assistance of James F. Byrnes, di-
rector of the Office of War Mobiliza-
tion, in securing the cooperation of
the unions. When Byrnes assented to
applying his well-known persuasive
powers to securing an understanding
with the Electrical Workers and Fire-
men and Oilers unions, Patterson
made the necessary arrangements for
a meeting on 5 December. To ensure
the support of the major operating
contractors at Clinton for any agree-
ment reached at this meeting. Groves,
Nichols, and Lt. (jg.) JohnJ. Flaherty,
a Navy officer serving as special as-
sistant for labor matters on the dis-
trict engineer's staff, conferred in
New York on 30 November with rep-
resentatives of Carbide and Carbon,
Tennessee Eastman, and the Fercleve
Corporation.
The meeting on 5 December in
Byrnes's office at the White House
laid the groundwork for the eventual
establishment of a satisfactory policy
governing labor activities of operating
employees at the Clinton Engineer
Works — and, by extension, to those
working at the other major atomic in-
stallations— for the duration of the
war. With Byrnes's assistance. Groves,
Patterson, and Edward McGrady, the
Under Secretary's labor adviser ob-
tained a tentative agreement from
A. L; Wegener, head of the Electrical
Workers, and Joseph P. Clark, who
2* Memo, Groves to Und Secy War , 28 Nov 44,
Incl to Memo, Und Secv War to Byrnes, 30 Nov 44,
HB Files, FIdr 51, MDR.
served in a similar capacity for the
F'iremen and Oilers, to postpone in-
definitely the labor hearings with the
proviso that the two unions be per-
mitted to represent their membership
in the handling of any grievances that
might arise. In the days immediately
after the White House meeting, the
Firemen and Oilers and the Electrical
Workers unions confirmed this agree-
ment, as did the International As-
sociation of Machinists, which had
petitioned for bargaining rights on
28 November with Roane-Anderson.
The Machinists union also filed a
petition to organize the thousands of
workers employed by Tennessee East-
man in the electromagnetic plant at
Clinton, but held it in abeyance in
keeping with the agreement. Some
local labor leaders, particularly those
in the Electrical Workers union, were
reluctant to forego organizing activi-
ties, for they were convinced that the
operating contractors simply had used
the Army to push through the ban on
union organization which they de-
sired. Only through the combined
efforts of War Department-District
labor officials and national union rep-
resentatives were the skeptical local
labor leaders finally persuaded to give
the District's alternative grievance
procedures a chance to be tested
before renewing their organizational
activities.
The procedures adopted for hear-
ing grievances were patterned on
those used in GOCO plants. In Sep-
tember 1944, the district engineer di-
rected that all operating contractors
at Clinton institute their own griev-
ance procedures, requiring only that
the latter conform to general stand-
ards laid down by District manpower
MANPOWER CONSKR\'Al ION
375
authorities. These procedures guaran-
teed each operating employee equal
access to "a fair and complete review
of his grievance." ^^ They also en-
sured him a hearing without delay
and resolution of his case within
thirty days. The employee could take
his grievance through the various
levels of plant supervision — foreman,
superintendent, and so forth — up to a
final hearing by a representative of
the district engineer. In this final
review, the aggrieved worker could be
represented by a union steward, who,
for reasons of security, must be an
employee of the same contractor as
the worker.
1 he question of unions and imion
activities among operating employees
at the other two major atomic installa-
tions— Hanford and Los Alamos —
never became a serious problem.
Workers at Hanford, many of them
already members of construction
unions, briefly attempted to organize
operating employees in the produc-
tion plants administered by Du Pont.
But Lt. Col. Franklin T. Matthias, the
area engineer, promptly intervened.
Similarly, outside unions requested
permission to organize Hanford work-
ers, but agreed to postpone their
effort as long as it would constitute a
threat to security. Occasionally indi-
vidual AFL members in the plutoni-
um production plants endeavored to
recruit members, but achieved little
success.
Most operating workers at Los
Alamos were either civil service or
contractor employees, some of whom
belonged to unions. By late 1944,
22 Ltr, Dist Engl to All Ojjcratiiig Contractors
C.KW, 27 Sep 44. copv in MDJt. Bk. I, \ol. 8. App
Bll. DASA.
there were indications that union
members generally opposed employ-
ment of nonunion workers in civil
service positions. In November, a rep-
resentative from the Office of the
Chief of Engineers in Washington,
D.C., meeting in Santa Fe with the di-
rector of the Thirteenth U.S. Civil
Service Region (which now included
New Mexico) and local labor leaders,
stated that there would be no discrim-
ination between union and nonunion
members in the hiring of civil service
employees for Los Alamos. In the
case of union workers employed at
Los Alamos by project contractors, no
labor relations problems of conse-
quence occurred during the period of
the war.
The modifications required by the
Army in the normal labor activities of
Manhattan's operating employees
proved to be both workable and effec-
tive. In the period of maximum plant
operations from late 1944 until Sep-
tember 1945, there was no compro-
mise of security or interruption of
production schedules that could be
charged to labor activities among
operating employees. Furthermore,
most production workers came to
accept the limitations on their em-
ployee rights as being necessary
under the circumstances. Consequent-
ly, these limitations did not seriously
affect employee morale or result in
large-scale defections from the job.
Perhaps the most concrete evidence
of the effectiveness of the project's
labor policies was the almost com-
plete absence of work stoppages from
late 1944 to the end of the war.
Among the tens of thousands of oper-
ating employees at Clinton in this
period, there was only one instance of
376
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
stoppage — a brief walkout of general
repairmen in May 1945 at the Car-
bide and Carbon installations. Work
stoppages of somewhat greater length
did occur at several plants producing
essential materials for the project in
Detroit, in Decatur (Illinois), and in
Uravan (Colorado), but none caused
serious interference with production
schedules. Even in the immediate
postwar period, when restraints on
union activities inevitably were weak-
ened, work stoppages traceable to
employee organizations or grievances
were remarkably low. As of the end of
December 194(), when the Army was
preparing to turn over control of the
atomic project to the Atomic Energy
Commission, Manhattan production
plants had lost only about eighty-six
thousand man-hours, or about 0.028
percent of their potential working
time, as a result of work stoppages.
From 1943 through early 1945, the
Manhattan Project faced relentless
construction and production sched-
ules that could only be met if the ade-
quacy and efficiency of its large and
heterogeneous work force could be
maintained. Consequently, the mili-
tary and civilian leaders of the project
early realized that they must take
strong countermeasures against such
prevalent manpower-eroding tenden-
cies in the American wartime environ-
ment as high labor turnover, the de-
mands of military conscription, and
labor union activities. Making use of
many of the same War Department
and other governmental channels ear-
lier employed for procuring workers
for the project, General Groves, the
Manhattan District's manpower staff
at Oak Ridge, and the area engineers
at the field installations were able to
secure approval for such labor turn-
over antidotes as higher wages and
improved housing, to work out spe-
cial arrangements for retaining criti-
cally needed workers with the Selec-
tive Service System, and to obtain the
cooperation of American union lead-
ers in postponing labor activities that
would have jeopardized the produc-
tion goals and security of the project.
CHAPTER XVIII
Electric Power
Reasonable access to the essential
process support elements of electric
power, water, communications, and
transportation was — as the safety and
security of geographic isolation — a
critical factor in Manhattan's selection
of suitable sites. Attainment of both
of these desired features was a diffi-
cult challenge, for often they were not
compatible with each other. Yet with-
out compromising project require-
ments, the Army resolved the dilem-
ma by choosing sites that were in
comparatively isolated regions of
Tennessee, Washington State, and
New Mexico and by developing those
process support resources available in
neighboring and adjacent areas.
Overseeing process support devel-
opment, particularly when the nation
was experiencing a chronic shortage
of electric generators, boilers, copper
wire, water pipes, and other equip-
ment and materials, became one of
the most important activities under-
taken by the Army in administering
the Manhattan Project. Illustrative of
this fact was that Army personnel at
every level participated in some
aspect of these activities: General
Groves and the Washington Liaison
Office coordinated with appropriate
Washington agencies to secure essen-
tial procurement priorities; the dis-
trict engineer and area engineers su-
pervised process support activities at
field installations and major procure-
ment centers; and the Army Engi-
neers and the Signal and Transporta-
tion Corps contributed substantially
in their respective fields of expertise.
And while the problems were most
pressing in the early months of site
development. Army personnel from
the project and other War Depart-
ment agencies continued to be in-
volved in their solution on a lesser
scale throughout the war.
Power Requirements and Sources
Of all the aspects of process sup-
port required for the atomic project,
none was more vital than electric
power. Electricity constituted, so to
speak, the very lifeblood of almost
every important production process,
as well as of many other project ac-
tivities. In planning and developing
the project's electric power program,
the Army faced three basic problems.
The first was how to procure large
amounts of electricity from a wartime
economy that was only beginning to
overcome chronic shortages. Project
leaders initially had estimated a need
for approximately 150,000 kilowatts,
but the decision to relocate the pluto-
378
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
nium production facilities at a sepa-
rate site had upped the requirement
to more than a quarter of a milHon
kilowatts, an amount of electricity that
at the time would have met the needs
of a typical American city with a pop-
ulation of half a million. As large as
these early estimates of power re-
quirements for the project were, time
would prove them to have been far
too low.^
A second problem was to ensure
electric service that would never be
interrupted. This requirement for vir-
tually unparalleled transmission reli-
ability arose from the peculiarly haz-
ardous character of the industrial
processes. Only continuous operation
of pumps, fans, and refrigeration
equipment would dissipate heat and
remove radioactive gases adequately.
Also, in the electromagnetic and dif-
fusion processes, almost any interrup-
tion in the progressive purification
stages would play havoc with closely
coordinated production schedules.^
1 Marshall Diary, 25 Jun 42, OCG Files, Gen Cor-
resp. Groves Files, Misc Recs Sec, behind Fldr 5,
MDR; Ltr, Groves to Herbert S. Marks (Act Dir,
Power Div, WPB), 7 Feb 43, Admin Files, Gen Cor-
resp, 675, MDR; MDH, Bk. 1, Vol. 12, "Clinton En-
gineer Works," p. 12.2 and App. C7, and Bk. 4,
\'ol. 3, "Design," p. 7.1, and Vol. 6, "Operations,"
p. 2.17, DASA; Memos, Brig Gen Thomas F. Farrell
(Groves's Dep) to Groves, sub: Power Require-
ments, 5 Jun 45, and Carl H. Giroux (OCE power
expert) to P'arrell, sub: Power Requirements for
CEW, 8 Jun 45, Admin Files, Gen Corresp, 675
(CEW), MDR. A watt, as used in this context, is a
unit of power equal to the rate of work represented
by a current of one ampere (one coulomb per
second) under a pressure of one volt. Thus, project
leaders in 1942 were predicting that 150 million
watts of power would have to be available on a con-
stant basis to fulfill the operating needs of the
atomic production plants.
2 Memo, Lt Col James C. Stowers (?>Iew York Area
Engr) to Marshall, sub: K-25 Proj Requirements,
21 Jan 43, Admin Files, Gen Corresp, 600.12 (Projs
and Prgms: K-25), MDR; Ltr, Percival C. Keith
(Kellex Corp. chief) to Stowers, sub: K-25 Proj
The third problem was a matter of
security, and related not to supply but
to distribution of electric power. Be-
cause the quantity of power required
could not be produced by generating
plants located within the confines of
the atomic reservations, much of it
had to be brought over extended
transmission lines running through
areas beyond the reach of effective se-
curity protection. Project engineers,
therefore, had to devise special tech-
niques that would thwart the efforts
of potential saboteurs.^
During the early period of project
development, Manhattan's administra-
tive and engineering staffs devoted
considerable attention to procuring
electric power for the proposed
atomic installations, especially for the
site(s) that would house the major
production plants. Preliminary site in-
vestigations in Tennessee and later in
Washington State occasioned talks
with the Tennessee Valley Authority
(TVA) and the Bonneville Power Ad-
ministration (BPA). The objective of
these talks was to obtain assurances
from the power agencies that suffi-
cient power would be available when
needed, or could be developed from
new generating facilities under con-
struction.^ The Army succeeded in
Power Supply and Requirements, 25 Mar 43, Admin
Files, Gen Corresp, 675 (CEW), MDR; MDH, Bk. 4,
Vol. 3, pp. 5.1 and 7.1, DASA.
3 Ltrs, Groves to J. A. Krug (OWTI Dir), sub: MD,
CEW', 2 and 30 Jun 43. Admin Files, Gen Corresp,
675 (CEW), MDR; MDH, Bk. 4, Vol. 3, pp. 7.1-7.3,
DASA; Memo, WTB (by Joseph Whelan, Rec Secy)
to BPA. sub: Power Svc for WD, HEW, 1 1 May 44,
.\dmin Files, Gen Corresp, 675, MDR; Groves, Xow
It Can Be Told, p. 112.
'"'Ihe TVA, which in 1942 had twelve new dams
and a large coal-steam power plant under construc-
tion, anticipated raising its capacity from approxi-
matclv 1.4 to over 2.5 million kilowatts by mid-
Continued
ELECIRIC POWER
379
•••"'!
mi
,\
, ' '^
PowF.R Plant {foreground) at HPLW, o;?^ of several facilities providing steam and backup
electricity for the production piles and separation plants
getting these assurances, but at best
they were tentative and did not in any
sense constitute a firm guarantee to
deliver power to a specified point on
a given date. In fact, at the time nei-
1945 — an incrcast- more than adequate to meet re-
qmremenls at (lintoii. I he BPA anticipated gener-
ating some 800. 000 kilowatts at the new (irand
Coulee Oani by mid- 1944, in addition to the 86,000
kilowatts it was producing at the Bonneville I^am.
See Tennessee \'allev Authority, Aniuuit Report of tlip
7'rnnessef Valtey; .iiitliorily /nr Fi\<al )'enr F.ndtuii JO pnie
42 (Washington, !).(. : (Government Printing Oflice,
1946), pp. 8 and 19-2,S; ibid., Annmit Refwrt of Itic
Teutiessee I'oltn Antlioril^ fir Fi\(at Year Ending 30 June
4') (Washington. !).(.: (.overnmeni Printing Oilke.
194,T). p. .58; l'..S. Depaitmeni ol Inieiioi, Bonne-
ville Power Adminisiiaiion. liefoil on Colnmhia Run
l>ou<n S\s/fw. Fiscal Van ton (Washington, D.C:
Covernmeni Printing Ollice. 1945), p. 8. The BPA
report adualh toveis opeialions Irom 1 Jul ,S8 lo
30 Jun 45.
ther the TVA nor BPA had an appre-
ciable amount of surplus power. Most
of their output was committed to war
industries, particularly producers of
aluminum, and to the many communi-
ties located in their service areas. ^
^Marshall Diarv, 21 -Sep 42, MDR. Backgiound in-
formation on \\\ and BP.A activities may be found
in the following sources; Roscoc C Martin, ed.,
Fl'A: I'tie First Tirentx Years (Knoxville; I'niversitv of
Tennessee Press, 1956), p. 86; "Bonneville Dam,
Oregon" and "Tennessee \'alley .\uthorilv." in Tlie
World AlmaiKK and Bool; of Fads for lOfh, cd. Harrv
Hansen (New York World Telegram, 1946), pp. 2.'i4
and 70!M)4; t .S. F.ngmeers Ofiice (Poitland. Oreg.)
and t'..S. Department of Interior, Bonneville Power
.Administration, Flie Bonnevdte /'ro/ert: Imfrovemenl of
the Columbia River at lionnevilte. ()res;on (Washington,
DC: CoNemmeiil Prmimg Oflice. 1941). p. .'V
380
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Manhattan leaders' early recogni-
tion that a very high priority must go
to securing firm commitments for an
adequate supply of electric power for
the atomic production plants led
them to seek immediate assistance
from several agencies in the War De-
partment, especially the Office of the
Under Secretary of War and the
Corps of Engineers, that had devel-
oped the organization and personnel
prerequisite to negotiating priorities
and arranging procurement for elec-
tric power and scarce electrical equip-
ment in the wartime economy. Gener-
al Groves, for example, frequently
drew extensively upon the vast
amount of data on the nation's elec-
trical resources in engineer files, ac-
cumulated since 1920 in carrying out
a continuous survey for War Depart-
ment mobilization planning purposes.
Groves also borrowed expert person-
nel from the engineer staff, including
Carl H. Giroux, who became chief
adviser on power matters for the
Manhattan District.^
Groves and Capt. Allan C. Johnson
of the District's Washington Liaison
Office handled most of the many mat-
ters that, in the tightly controlled war-
time economy, required clearance
through the Power Division (later
called the Office of War Utilities) of
the War Production Board. They also
took responsibility for those aspects
of the Hanford negotiations with the
BPA that required approval from the
Department of Interior. Keeping in
close touch with Groves and Johnson,
District headquarters officials assisted
in many aspects of the Clinton negoti-
ations with the TVA, which had its
headquarters in Knoxville, conven-
iently near the Tennessee site.'
Because of the tentative nature of
earlier TVA power commitments,
Groves directed Captain Johnson to
visit the War Production Board. In-
quiring about the status of these com-
mitments, the board assured Johnson
that more than sufficient power would
be available at the Tennessee site
when needed. These commitments,
however, were based on Manhattan's
original power assessment for the site,
which, by October 1942, project engi-
neers had determined was too low.
New electric power projections were
calculated, and on the nineteenth
Deputy District Engineer Nichols in-
formed Herbert S. Marks, acting di-
rector of the Power Division, that a
maximum of 75,000 instead of 60,000
kilowatts would be required by mid-
summer of 1943, increasing to
125,000 kilowatts by October of that
year. Upon reviewing the estimated
power requirement of 150,000 kilo-
watts for early 1944, Nichols re-
marked that this figure was probably
too high and suggested the total be
reduced to about 130,000 kilowatts. A
final concern was if this requirement
would absorb the extra power re-
sources the TVA was accumulating
for emergency use, but Marks reas-
^ Smith, The Army and Economic Mobilization, pp. 95-
96. Evidence of the many occasions when Office of
the Under Secretary of War and Corps of Engineers
personnel were involved in Manhattan Project
power negotiations may be found in MDR, Admin
Files, Gen Corresp, 675 (CEW).
■'Donald M. Nelson, Arsenal of Democracy: The Story
of American IVar Production (New York: Harcourt,
Brace and Co., 1946), p. 365. See also WPB Org
Chart in Civilian Production Administration, Bureau
of Demobilization, Industrial Mobilization for War: His-
tory of the War Production Board and Predecessor Agencies,
19-40-45, Program and Administration, Vol. 1 (Wash-
ington, D.C.: Government Printing Office, 1947), p.
593 (henceforth cited as History of WPB).
ELECTRIC POWER
sured Nichols that all power require-
ments for Clinton would be met.^
Yet sweeping changes under way in
the War Production Board's policy re-
lating to nonmilitary government con-
struction threatened the l\'A's pro-
gram for expanding its generating
facilities. On 20 October, WPB Chair-
man Donald Nelson directed all fed-
eral agencies involved in large-scale
building programs to cease nonmili-
tary construction not directly essential
to the war effort. When news of the
directive reached Captain Johnson, he
conferred at once with Groves, Nich-
ols, and board officials. Meanwhile,
General Styer sent word that T\'A
Chairman David E. Lilienthal already
had asked Under Secretary of War
Patterson to resolve this dilemma in
face of increasing War Department
demands for TVA power.
Johnson interpreted these develop-
ments to mean that Manhattan should
await the outcome of Lilienthal's con-
sultations with Patterson before sub-
milting a protest, thereby avoiding
any contretemps. Patterson subse-
quently intervened with the War Pro-
duction Board and obtained permis-
sion for the T\'A to complete one of
its largest projects — the Fontana Dam
on the Little Tennessee River in west-
ern North Carolina — on the grounds
that it was essential to the war effort.
And to give additional support to the
TVA's case for continuing work on
the dam. Groves had the Engineers
deputy chief inform the agency that
the Manhattan District's maximum
power requirements would be be-
tween 125,000 and 150,000 kilowatts.
Bottlenecks removed, direct action as-
sured completion of the major Fon-
tana generating facilities by early
1945, in time to furnish the (Clinton
installations with the additional power
they would need.^
The Military Policy Committee's
December 1942 decision to shift loca-
tion of the plutonium production fa-
cilities from Tennessee to another
site presented project leaders with an-
other major problem in power pro-
curement. Project engineers estimated
that the plutonium installations would
require approximately 140,000 kilo-
watts of electricity by early 1944. Al-
though General Groves was aware of
this requirement, he had not obtained
a preliminary commitment from the
War Production Board and the BPA
when Hanford was selected as the
plutonium site. Groves was apparently
relying on ample evidence that major
units of the great Grand Coulee Dam
hydroelectric plant, which would have
an operating capacitv of more than
800,000 kilowatts by mid- 1944, were
nearing completion. He knew from
site reports that the BPA's existing
Midway Substation was strategically
located at the western edge of the
area, where project transmission lines
could readily tap the BPA system.
Also, lines owned by the Pacific
Power and Light Company, a private-
ly owned utility that supplied most of
the electricity to local communities in
the area, crisscrossed the Hanford
^Marshall Diarv, 2 Jul. 21 Sip, 19 Oct 42. MDR;
('hart. Site X Wectric Power Rtciuircments, 24 Oct
42. Admin Files. Gen Corresp. 675 (CKW), MDR
9 I.tr, Nelson to Lilienthal, 20 Oct 42, Admin
Files, (;en Corresp, 675 (CEW), MDR; Hislon of
IVPB. p. 401; Marshall Diarv, 22 Oct 42, MDR;
Memo, Lt Col R. H. latlow (WD Rep, WPB Facility
Review (.ommittee) to I nd Secy War, sub: lA'A
Projs, 22 Oct 42, Admin Files, C>en (".orresp, 675
(CFW), MDR: Martiti, '/I.L The First Tirenl\ )Wirs. p.
8(i: D.SM Chronologv. 2 Nov 42, Sec. 26. OROO.
382
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
reservation at several points, provid-
ing an immediately available source
of power for early construction
activities. ^°
As early as mid-January 1943, the
War Production Board learned that
the Manhattan Project would be seek-
ing a large block of electric power
somewhere in the Pacific Coast area,
but it did not hear officially from
Groves until early February. On the
seventh of that month. Groves sub-
mitted a brief description of Han-
ford's anticipated requirements to the
Power Division. Beginning in April,
he indicated, the plutonium project
would need about 10,000 kilowatts
for construction purposes. By Decem-
ber, this requirement would grow to
40,000 kilowatts and then rise in reg-
ular increments to a maximum load of
approximately 140,000 kilowatts in
1944. Meanwhile, Groves noted, pre-
liminary studies were already under
way to determine what electrical
equipment must be procured for the
plutonium plants and their power dis-
tribution system. ^^
The War Production Board
promptly notified Groves that the
BPA could meet Hanford's power re-
quirements from its Midway Substa-
tion and stated its general agreement
with the preliminary plans for electri-
cal equipment and distribution for the
plutonium site. With this confirma-
tion. Groves turned over to Giroux,
10 Matthias Diary, 7 Feb 43, OROO; Groves, Now
It Can Be Told. pp. 74, 89, 207-09; MDH, Bk. 4, Vol.
3, p. 7.1, and Vol. 4, "Land Acquisition, Hanford
Engineer Works," pp. 2.11-2.12, DASA; Du Pont
Constr Hist, Vol. 1, p. 10, and Vol. 4, pp. 1059-67
and 1072, HOO; Data on BPA in World Almanac for
1946, p. 234.
>i Ltrs, Marks to Groves, 18 Jan 43, and Groves
to Marks, 7 Feb 43, Admin Files, Gen Corresp, 675,
MDR.
his power consultant, the detailed
task of reserving blocks of power to
be available on specified dates. In ne-
gotiations with the BPA office in
Washington, D.C., Giroux paved the
way for a firm agreement on power
reservations, which project officials
reached in mid-March with the BPA
administrator.^^
Because of the urgent need for
speed, Manhattan had to go ahead
with preliminary arrangements for
power at both Clinton and Hanford
on the basis of only a minimum of in-
formation concerning precise design
and operating characteristics of the
production plants. Consequently, as
construction and operation processes
were developed in greater detail,
project engineers frequently had to
revise estimated power require-
ments— usually upward. New surveys
conducted at Clinton in March 1943
revealed that total power needs by
May 1944 would be about 285,000
kilowatts (electromagnetic plant,
114,000; gaseous diffusion plant,
160,000; plutonium semiworks, 1,200;
the town of Oak Ridge and other in-
stallations, 9,500), nearly twice the
original estimate. Faced with the con-
siderable increase in previously pro-
jected requirements. General Groves
dispatched Giroux to the War Pro-
duction Board. Following negotia-
tions with the TVA, the board report-
ed back to Giroux that the TVA could
furnish the indicated 285,000 kilo-
watts of firm power without unduly
> 2 Ltrs, Marks to Groves, 8 Feb 43, and Paul J.
Raver (BPA Admin) to Chief of Engrs, Attn.: Giroux,
17 Mar 43, Admin Files, Gen Corresp, 675, MDR.
ELEC/IRIC POWER
383
interfering with its commitments to
other users. ^^
At about the same time, important
new information came from Keflex
Corporation designers on plans for
the gaseous diffusion (K-25) pfant:
Totaf dependence upon outside
power resources woufd not be practi-
cable or safe. Ihe diffusion process
required a vast system of motor-
driven pumps and blowers and the
Kellex studies showed that even the
briefest interruption in power supply
would cause an unacceptable reduc-
tion in productivity. "For manv
months . . . ," Groves later recalled,
"we labored imdcr the belief that if
the plant was shut down through
power failure or for anv other
reason — for as much as a fraction of a
second — it would take many days,
some said seventy, to get back into
full operation." ^*
Ihe obvious solution was to pro-
vide the gaseous diffusion facility with
its own electric generating unit, and
Kellex designers advanced a number
of reasons for favoring an on-site lo-
cation for this power source. An on-
site plant could be designed to
produce the variable-frcquencv cur-
rent required for the diffusion pro-
cess, thus eliminating the need for
expensive, complicated, and difficult-
to-procure equipment to transform the
T\'A's fixed-frequency current. And,
a power plant on the reservation
would be far less exposed to sabotage
than the lA'A's off-site facilities, espe-
cially its extended transmission lines
running miles across open country to
the (Clinton site. Furthermore, there
was always the chance that the 1 \'A,
with so many wartime industries de-
pendent upon its resources, might
not be able to supply iminterrupted
power. With these arguments, Kellex
officials persuaded project engineers
that a steam-electric plant capable of
generating the basic power load for
the diffusion process should be built
innnediately adjacent to the main
K-25 works. Groves, in particular,
was impressed by the highly positive
security and engineering advantages
of an on-site power plant. ^^
Kellex's persuasive arguments led
to the Distiict's decision in mid-April
1943 to build the steam-electric plant
and, shortly thereafter, to contract
with the prime construction contrac-
tor for K-25, the J. A. Jones Con-
struction Company, for its erection.
By early summer work was under way
on the generating unit, one of the
largest of its type to be built up to
that time. Its original design called
for nine tuibogenerators, operating
with coal-heated steam from three
'3 Memo, 1.1 Col Robert C. Blair (Kx Oil, Ml)) to
Marshall, sub: CP-\V Pouer Requirements, 30 Mar
4.3; Draft Ltrs, unsigned to J. K. Moore (Power Prod
Br chief, VVPB). 30 Mar 43; Memo. C.iroux to
Cloves, 15 Mar 43. All m Admin Files. Cen Coi-
lesp, (37.5 (C:EW). MDR.
'•* Croves, Xnir ll Can Br Told. p. 1 I'J.
'^MDH, Bk. 2, \ol. 3, "Design," pp. 12.1-12.3.
DAS.A. Memo, Stowers to Marshall, sub: K-25 Proj
Requirements, 21 Jan 43. MDR. l.tr, Keith to
Stowers, sub: K-25 Pioj Power Supply and Require-
ments. 25 Mar 43: lelecon. Groves and Albert L.
Baker (Kellex Chid Engr), sub: Separate Power
Plant Instead of Using lA'.A. 26 Jun 43: Llr. Groves
to Krug, 30 Jun 43. All in .Admin Files, Gen Cor-
resp. 675 (CFVV), MDR. Gioves Diarv. 26 Jun 43,
LRCi. Cwoves, Notes [in] Black Notebook. OCG
Files, Gen C-orresp, Groves Files. MDR. Ihe notes
are in a small (10" x 7"), loose-leaf, three-ringed
binder and were maintained pcrsonallv bv Groves as
an aid to memory and as a repositorv of data on vir-
luallv all aspects of atomic project activities from
Mav 1943 through Ma\ 1045. Data on power at
Clinton are in the section tabbed "Permanent
Notes." See also Groves. Wnr It Can Br Told. p. 112.
384
MANHATIAN: THE ARMY AND IHE ATOMIC BOMB
K-25 Power Plant at CEW
750,000-pound boilers, to produce a
maximum of 238,000 kilowatts of
variable-frequency power. With this
anticipated output, project engineers
could reduce estimates of fixed-fre-
quency power needed from the TVA
for K-25's "nonvital requirements" to
approximately 35,000 kilowatts. ^^
•6 Dist Engr, Monthlv Rpt on DSM Proj, 23 Mar-
22 Apr 43, OCG Files, Gen Corresp, MP Files, Fldr
28, Tab A, MDR; Completion Rpt, M. W. Kellogg
Co. and Kellex Corp., sub: K-25 Plant, Contract W-
7405-eng-23, 31 Oct 45. p. 11, OROO; Telccon,
Groves and Baker, sub: Separate Power Plant In-
stead of Using TVA, 26Jun 43, MDR; MDH, Bk. 1,
Vol. 12, pp. 12.4-12.6, 12.19, 12.2,3-12.26, and Bk.
2, Vol. 3, pp. 12.1-12.4, DASA. Fhe Admin Files,
Gen Corresp, 675 (CEW), MDR, contains a series of
progress charts on construction of the K-25 power
plant through September 1943. General Groves
used the terms mtal and nonvital to distinguish be-
tween the kinds of power required for basic plant
Building a major power plant
added substantially to Manhattan's
procurement problems during K-25
construction, so District procurement
officials frequently turned to the War
Production Board's Office of War
Utilities for aid in obtaining a variety
of scarce equipment. The utilities
agency, for example, persuaded a
Chicago firm to cancel its order for
two already partly fabricated 750,000-
pound boilers and also reassigned
priorities previously granted to other
war projects, thus enabling Manhattan
to obtain not only the essential boil-
ers but also eight 25,000-kilowatt tur-
bogenerators. Manhattan subsequent-
ly sought a ninth generator to meet
operation and for other uses on the K-25 project.
See Groves Ms, p. 364, CMH.
ELPX: IRIC POWER
385
peak demands to protect against sab-
otage, but War Utilities Director J. A.
Krug balked at the request, pointing
out to Groves that power from out-
side sources could be brought to the
plant over two separate transmission
circuits. Each would carry electricity
from a different power source, but
each would be capable of transmitting
the entire power load available in the
area. Furthermore, the two TVA cir-
cuits were of lightningproof construc-
tion and there was a third independ-
ent circuit that could be tied in with
them if necessary. "Except for simulta-
neous sabotage of all circuits," Krug
concluded, "a failure of external
power supply is virtually inconceiv-
able. Certainly the combined reliabil-
ity of several such circuits is incompa-
rably higher than that of a ninth
generator unit." ^^
Krug's arguments failed to budge
Groves, who countered with the state-
ments that the gaseous diffusion pro-
cess simply could not afford to
depend upon outside sources for any
part of its power and that there would
be technical difficulties converting the
TVA's current to variable frequency.
Groves was willing, however, to con-
sider a compromise solution suggest-
ed by Kellex, the substitution of two
small turbogenerators capable of pro-
ducing almost as much current as one
large generator. Krug agreed, but the
two small units did not suffice and
eventually three more turbogenera-
tors were added, bringing the total to
fourteen.^**
While solving the huge electric
power requirements of the major pro-
duction plants at Clinton and Han-
ford, Manhattan's administrative and
engineering staffs also took care of
the lesser power needs of the
project's research and development
installations, including those of Los
Alamos. Expanding facilities in Chica-
go were typical. The Metallurgical
and Argonne laboratories required a
comparatively small but reliable
source of electricity to operate their
many research and development
projects, and Captain Johnson negoti-
ated with the W^ar Production Board
for allocation of adequate power from
existing local sources. The Los
Alamos Laboratory, because of its ge-
ographic isolation, presented different
problems. There, the Army post com-
mander assisted project engineers in
procuring several small, easily obtain-
able diesel generators capable of pro-
ducing the relatively small amount of
current required to meet initial
needs. ^^
'^ Ltrs. Krug to (iioves, sub: MI), CtW, 11 Jun
43 (source of quote, Krug's italics), and Groves to
Krug, same sub, 2 Jun 43, Draft Ltr, unsigned
(probably Baker to Stowers), sub: Power Supply
Equipment, 30 Mar 43, and appended data. All in
Admin Files, Gen Gorresp, 675 (GEW), MDR.
MDH, Bk. 2, \ol. 3. pp. 12.5-12.6, DASA.
18 Ltr, Groves to Krug, 30 Jun 43, MDR; MDH,
Bk. 2, Vol. 3, pp. 12.6 and 12.20, DASA. In Septem-
ber 1945, a K-25 power plant operator accidentally
threw a wrong switch, briefly cutting oil the electri-
cal supply. The damage to equipment and loss in
production proved much less than had been predict-
ed by Kellex m 1943. For further details on this
power outage see Memo, Gol Walter J. Williams
(K-25 unit chief) to Nichols, sub: Power Failure to
Section 2b on 16 Sep, 25 Oct 45; Ltr, Baker to
Stowers, sub: Rpl of K-25 Power Failure on 16 Sep,
19 Oct 45, and Ind. Both in Admin Files, C.en Gor-
resp, 675 (GKW), MDR. Groves, \ow It Can Be Told.
pp. 112-13. Sec Gh. XI for a description of an at-
tempt to sabotage the K-25 supply of electrical cur-
rent.
>9 Marshall Diarv, 27 Oct 42, MDR; MDH, Bk. 3,
"The P-9 Project," pp. 3.2, 4.6-4.7, 4.13, 4.19. and
Bk. 8, Vol. 1. "General," pp. 5.14-5.15, DASA.
386
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Implementation of the Power Program
Manhattan had largely completed
the acquisition phase of its power
program by mid- 1943. Its next task
was to bring these resources to bear
upon achievement of basic program
objectives through negotiation of
complex purchase contracts and oper-
ating agreements with the TVA, BPA,
and other outside suppliers; through
design and construction of distribu-
tion systems; and tlirough procure-
ment of materials and equipment.
Manhattan's general purchase con-
tract for power service to Clinton was
based on policy agreement that TVA
Chairman Lilienthal and Under Secre-
tary of War Patterson had drafted in
the fall of 1942. Under terms of this
agreement, the TVA would supply all
War Department projects at its lowest
primary rate, that is, the rate normally
granted only to purchases made
under long-term contracts; the War
Department could terminate any pur-
chase contract on thirty-days' notice
without penalty; and, as needed, the
TVA would construct additional
transmission lines while the War De-
partment would build substations and
connecting lines. ^°
The earlier view that War Depart-
ment purchases would constitute a
relatively small part of the TVA's
total power production came under
close scrutiny in 1944, because power
requirements at Clinton had multi-
plied greatly. Consequently, when Lil-
ienthal prepared to approve Manhat-
tan's power contract in April, he
began to have serious qualms about
the long-range impact of its future
purchases upon the economy of the
TVA system. He pointed out to Pat-
terson that if, under the terms of the
1942 agreement, Manhattan should
suddenly decide to terminate its pur-
chases of electricity on thirty-days'
notice, the TVA would face the pros-
pect of excessive financial loss. Under
normal commercial purchase agree-
ments, the TVA protected itself by
long-term contracts and higher rates.
Lilienthal requested that the War De-
partment provide that "the contem-
porary record make it clear that the
loss, should it occur, is one of the
costs of the war and therefore not
one that the consumers of electricity
in the Tennessee Valley should be
singled out to bear." ^^
The Under Secretary of War ac-
knowledged that the TVA was indeed
likely to suffer substantial losses
should Manhattan elect to exercise
the right of thirty-days' cancellation
of service and therefore agreed that,
if the TVA did not at once find other
purchasers for the power it was fur-
nishing the Clinton site, the War De-
partment would support the agency in
claiming that such losses were com-
pensable. Manhattan's basic power
supply contract for Clinton was
signed on 25 April 1944 (effective
1 October 1943), with supplemental
provisions for a variety of other elec-
trical services subsequently added.
Because the TVA viewed all Clinton
activities as being for a single con-
sumer, it billed Manhattan in the
same manner as the other large com-
mercial users of power on the TVA
system. ^^
20 Ltr, Lilienthal to Patterson, 26 Apr 44, HB
Files, Fldr 80, MDR.
21 Ibid.
^^ Ltr, Patterson to Lilienthal, 1 May 44, HB Files,
Fldr 80, MDR; MDH, Bk. 1, Vol. 12, pp. 12.1, 12.9,
Continued
KLKCIRIC: POVVKR
387
The BPA's general purchase con-
tract for power service to Ilanlord, al-
though agreed upon in Februar\
1944, was not completed in final form
until November. The primary cause of
delay was General Groves's conviction
that the purchase contract did not
provide sufficient guarantees for reli-
able service. Patterson requested the
Office of War Utilities to grant addi-
tional priorities that would give Han-
ford first claim on Bonneville power
resources under all circumstances and
would expedite procurement of mate-
rials and equipment needed to make
its distribution svstem more reliable.
To establish Hanfbrd's prior claim to
power from the Bonneville system,
the War Utilities director had his staff
prepare a draft priorities directive,
rhis directive, to become effective
when the plutonium facilities began
actual operations, indicated that the
War Production Board had approved
all requests for materials and equip-
ment for the BPA-Hanford electrical
distribution system to date and that it
would continue to do so in the
future.-^
l.S and App. A (Nos. 80. H:\-HH. *)(), 9'J, <).5-9(i, 209.
211-12. 217), DA.SA. The original contract provided
that .Manhattan could not resell current to commer-
cial users, but a 1 Jul 45 supplement granted the
|)rojcct permission to resell limited amounts to con-
cessionaires located within the site boundaries. This
su[)|)lement also contained a provision that any sur-
plus electricity produced by the K-2.5 power plant
uas, il requested, to be made available to the l\.\
svstcni.
■ 23MnH. Bk. 4. \ol. 5. ■■Consiruciion." p. 7.1 and
App. (:23. DA.SA. Du Pont Consir Hist. Vol. 4, p,
I().i9. HOO. Du Pont Opus Hist. Bk. ,3, "Electrical
Power Distribution Kxperieiue lo July 1. 194.5," p. 3
nOO. Ltrs. Patterson to Krug, sub: Power Svc lor
HKW, 22 Feb 44, and Krug to Patterson, same sub,
:}1 Mar 44; Ltr, Kdward Fakk (OWf Dir as of Apr
44) to Raver, sub: Power ,Svc lor WD, WV.W . 6 Mav
44; Ltrs, Faick to Palieison, s.mie sub, 1 I Mav 44.
and Patterson to Fah k. .'Vjiil 44. and liid (I)iall l)i-
Belore gi\ing ilanlord prior claim
to BPA power, the Office of War lUil-
ities required negotiation of a satisfac-
tory operating agreement. Precise
terms, however, were not completed
until August 1944. when Manliattan
finally forwarded a completed draft to
the BPA administrator. The latter
took strong objection to certain key
provisions, especially those ensuring
maximum reliability of electrical serv-
ice to Hanford. Such provisions, the
administrator contended, not only
would place unreasonable restrictions
on the BP.A's generating and trans-
mission facilities, resulting in serious
financial losses, but also would pre-
vent the BPA from meeting the full
demands of its other customers and
from securing new users.
Faced with the prospect of further
delay in negotiating a satisfactory
agreement with the BPA, General
Groves once again turned to Under
Secretary of War Patterson. The Man-
hattan commander explained to Pat-
terson that the BPA administrator's
objections were essentially the same
as those earlier advanced by Lilienthal
concerning the terms of T\'A service.
On 1 1 August 1944, acting on behalf
of Patterson, Assistant Secretary of
War John J. McCloy informed the
BPA administrator that if the Bonne-
ville system should incur losses be-
cause of "the particular conditions
necessarilv imposed by the war effort
in this instance [service in Hanford],
such losses would be one of the costs
of the war." -^
leciive). .\11 m I IB Files. Fldr 51. .MDR. .Matthias
Diarv. 29 Jul 44, OKOO.
'-■' (Quoted words from Ltr, McCIon (for Patterson)
to BPA Admin, I I Aug 44, HB Files, Fldr 51, MDR.
388
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
As soon as the BPA received solid
assurances from the War Department
that such losses would be covered, it
notified the Under Secretary that it
would promptly approve the agree-
ment. Under terms of the agreement,
the BPA guaranteed Hanford 150,000
kilowatts of electricity and agreed to
supervise the remodeling, equipping,
maintenance, and repair of the exist-
ing transmission system to ensure a
stable and uninterrupted flow of
power under all predictable condi-
tions. The BPA's approval of the op-
erating agreement cleared the way for
the Office of War Utilities to issue the
long-delayed priorities directive, thus
removing the last obstacle to the
development of Hanford's power
service. ^^
Implementation of the power re-
sources to meet the relatively modest
needs of Manhattan's other installa-
tions presented few problems. In
most instances, these facilities simply
established whatever hookups were
required into the already existing
transmission systems. No special pri-
orities or operating agreements were
necessary as long as the demands of
the project did not place an undue
burden on the supply of power avail-
able. Atomic laboratories on the cam-
puses of universities (for example, at
Chicago, California-Berkeley, and Co-
lumbia) tapped into available facili-
ties. The heavy water plants at Trail,
British Columbia, and at the Army's
See also Memo, Groves to Patterson, 1 1 Aug 44.
HB Files, Fldr 80, MDR; Dist Engr, Monthly Rpt on
DSM Proj, Sep 44. MDR.
2^ Ltrs, S. E. Schultz (Act BPA Admin) to Patter-
son, 24 Aug 44, J. J. Gendron (Act BPA Admin) to
11 Oct 44, Patterson to BPA Admin, 17 Oct 44, and
Raver to Patterson. 28 Oct 44, HB Files, Fldr 51,
MDR; Du Pont Opns Hist, Bk. 3, pp. 3-4, HOO.
three munitions installations likewise
drew upon existing sources of power.
The situation differed somewhat at
Los Alamos, where the nearest high-
power transmission line was almost
25 miles distant from the installation
site. For more than a year, small
diesel-powered generators supplied
the bomb laboratory with sufficient
electricity. But in August 1944, when
power demands increased beyond the
maximum load that could be safely
generated over an extended period
by existing units, project engineers
recommended securing additional
sources of electricity. Based on their
investigation that procurement of an
additional generator would take
longer and provide less flexibility
than constructing a high-voltage line
to tie in to the New Mexico Power
Company's nearest transmission line,
the Army authorized the connecting
line. Projected power requirements
for 1945, however, surpassed the
supply available from the new source.
To overcome this shortfall, two more
diesel generating units were procured
and, in 1946, began providing the ad-
ditional power needed by the bomb
laboratory. 2^
Distribution: Clinton Engineer Works
Both the Clinton and Hanford sites
were selected in part because of their
location near major power transmis-
sion lines, but neither had within its
boundaries a well-developed local
electrical distribution system. Of the
two major sites, Clinton was more de-
ficient in this respect. The thinly pop-
2^MDH, Bk. 8, Vol. 1, "General," pp. 5.14-5.17.
DASA.
ELECTRIC POWER
389
ulated, largely rural Tennessee coun-
tryside had only the low-voltage dis-
tribution facilities required to provide
local farmers and villagers with
modest amounts of electricity. Hence,
an immediate task for Manhattan en-
gineers in the fall of 1942 was to
plan, design, and build a complex and
elaborate system capable of meeting
the substantial, highly diversified, and
ever-changing power needs for con-
structing and operating large-scale
production plants and their support-
ing community facilities. Preliminary
studies established that such a system
required two major tvpes of construc-
tion: a net of connecting and tie lines
to carry current from the TVA's high-
voltage transmission systems, and a
number of substations to receive, step
down, and distribute the high-voltage
electricity. 2"^
Getting the electrical distribution
system at Clinton built and in oper-
ation was a matter of high priority,
for site development hinged on a
supply of adequate electricity. As
soon as Manhattan had assurances
from the War Production Board and
the TVA that sufficient power would
be available, it began negotiating a
series of contractual agreements with
the TVA. These agreements, most of
them completed in early 1943, pro-
vided for construction of various
transmission line. At the same time,
the District assisted Stone and Web-
ster and Du Pont in making arrange-
ments with the TVA to furnish elec-
tricity for preliminary construction
work via the existing low-voltage
transmission svstem.
lo ensure that the system's com-
plex substations would be ready when
needed, the District arranged for the
construction contractors to build
these units. In supplemental contracts
negotiated in early 1943, Stone and
Webster agreed to build two substa-
tions in the electromagnetic (V-12)
plant area that would serve that in-
stallation and the Oak Ridge commu-
nity. Similarly, the A. S. Schulman
Electrical Company, working with
Kellex on the gaseous diffusion plant,
assented to construct the substation
that would give that installation
access to TVA power. ^^
As 1943 unfolded, the TVA and the
construction contractors moved ahead
rapidly with the distribution system —
a system that would continue to
expand and change throughout the
war as new demands were made upon
it. The availability to Manhattan of
the TVA's large staff of experienced
electrical engineers and of subcon-
tractors with the necessary equipment
and line crews helped to expedite
construction. To keep abreast of all
developments, the district engineer
maintained close supervision over the
work through his unit chiefs in charge
of construction on Y-12, K-25, and
the Oak Ridge community. ^^
The first part of the Clinton electri-
cal distribution net to take shape was
the basic transmission line, a 154-kilo-
volt loop, to supply electricity to the
electromagnetic plant and the first
section of the town of Oak Ridge
The TVA, under terms of a subcon-
2Mbid.. Bk. 1. Vol. 12. pp. 12.9-12.11, DASA;
C.ompletion Rpt, Stone and Websler, sub; Clinton
Engr Works, Contract W'-7401-eng-13, 1946, p. 56,
OROO.
28MDH, Bk. 1, Vol. 12 pp. 12.1-12.2, 12.9-
12.11, 12.19-12.27. DASA.
29 Org Chart, U.S. Engrs OfTice, MD. 1 Nov 43,
Admin Files, Ccn Corresp, 020 (MKD-Org), MDR;
MDH. Bk. 1. Vol. 12, pp. 12.14-12.27, DASA.
390
MANHAI IAN: IHE ARMY AND THE A 1 OMIC: BOMB
tract with Stone and Webster, de-
signed and built this loop, completing
it in June 1943. At a point some dis-
tance northeast of the Tennessee site
the loop cut into an existing 154-kilo-
volt TVA line, which carried current
generated in hydroelectric plants on
the Tennessee River at Norris Dam,
northeast of the Clinton site, and
Watts Bar Dam, southwest of the site,
and ran a distance of 3.6 miles to
substation Elza Number 1, built by
Stone and Webster adjacent to the
electromagnetic plant. ^°
That summer, when electrical serv-
ice from the TVA's existing rural 12-
kilovolt line to the plutonium (X-10)
semiworks became unsatisfactory, the
TVA, with District authorization, built
a new 13.8-kilovolt connecting line.
This line, which extended some 6
miles from the switch house at the
K-25 power plant to the X-10 area,
ensured the comparatively small re-
quirements— never more than 1,000
kilowatts — of the semiworks and its
laboratory facilities. ^^
By fall, expansion of the electro-
magnetic plant and rapid growth of
the town of Oak Ridge created a
demand for more electricity. To
supply additional power, the TVA,
again operating under a Stone and
Webster subcontract, designed and
built a new 154-kilovolt line. Com-
pleted in mid- 1944, this 14-mile line
ran from the TVA's Fort Loudoun
Dam generating facilities on the
Clinch River south of the site to sub-
station Elza Number 2, built by Stone
and Webster at the west end of the
extended electromagnetic plant area.
It also included a 1.3-mile tie line
from Elza 1 to Elza 2, making possi-
ble the interchange of power between
the two switching points. ^^
The reliability and efficiency of the
distribution system was further in-
creased with the addition of a 154-
kilovolt line between the electromag-
netic plant in the eastern sector of the
reservation and the gaseous diffusion
facilities in the western sector. The
TVA, with District authorization, de-
signed and built this additional trans-
mission line, which ran between
Elza 1 and a step-down transformer
at the K-25 site. When finished in
late 1943, this line not only gave the
K-25 area a temporary source of
power, pending completion of its own
substation, but also furnished the
means for satisfying unanticipated
power requirements from surpluses
available elsewhere in the TVA
system. ^^
An increasing demand for TVA
power was a corollary to the rapidly
expanding atomic production facilities
at Clinton, but precisely where it
would occur and in what quantities
was difficult to predict. This was par-
ticularly the case in the gaseous diffu-
sion plant area, where the decision in
1944 to use steam from the K-25
power plant for operating the thermal
diffusion (S-50) process and in 1945
to build a side-feed extension (K-27)
30MI)H, Bk. 1, Vol. 12, pp. 12.13-12.14 and
12.20-12.22, DASA; Completion Rpt, Stone and
Webster, sub: CEW, pp. 61-62, OROO.
*' Completion Rpt, Du Pont, sub: Clinton Engr
Works, TNX Area, Contract W-74 12-eng-23, I Apr
44, pp. 32-33, 36-37, 535, OROO; MDH, Bk. 1,
Vol. 12, pp. 12.18-12.19, DASA.
^^C>ompletion Rpt. Stone and Webster, sub:
CKW, pp. 61-62, OROO; MDH, Bk. 1, Vol. 12, pp.
12.3-12.4 and 12.14-12.15. IMSA.
33 MDH, Bk. 1, Vol. 12, pp. 12.4-12.5 and 12.23-
12.26, DASA: Completion Rpt, Kellex Corp., sub:
K-25 Plant, p. 12, OROO.
ELECIRIC POWER
391
unit made further lapping ol the I'X'A
system mandatory, ro compensate
for the lower electrical output of the
K-25 powerhouse, the r\'A agreed to
build a 154-kilovolt line from its Fort
Loudoun Dam to the K-25 substa-
tion, adjacent to the main gaseous
diffusion plant, and a supplementary
connection from its Norris-Watts Bar
line to the newly erected K-27 and
existing K-25 substations. A number
of other connections were in the plan-
ning, but the end of the war obviated
their construction.^"
By mid- 1945, transmission facilities
and power sources at the 1 ennessee
site were capable of providing current
at a peak demand rate of 310,000
kilowatts, distributed as follows: Y-12,
200,000; town of Oak Ridge, 23,000;
K-25, 80,000; S-50, 6,000; and X-10,
1,000. Actual peak demand during
the wartime period never quite
reached the maximum figure of
310,000 kilowatts. The highest
demand rate recorded was 298,800
kilowatts on 1 September 1945. Peak
consumption for any extended period
during the war occurred in August
1945, when the electricity used by all
facilities for the month totaled about
200 million kilowatt hours. ^^
Distribution: Hanford Engineer Works
As at the Tennessee site, the nucle-
us of the electrical distribution svstem
for the Hanford site was the existing
'mi)H, Bk. 1, \()l. 12, pp. 12.4-12.5, 12.16-
12.18. 12.2.S-12.27, DA.S.X; Dist Eiigr. .MoiuliK Rpt
on DSM I'roj, Apr 45. .MDR; C;ompkti(.n Rpt, .\1.
\V. Kellogg Co. and Kellex C^orp., .sub: K-27 Flxtcn-
sion, .^1 Jan 46, pp. 9-10, OROO. Sec Ch. VIII for
a detailed flescriptioii of the lliemial diflusioTi plant
and its deiii.inds on the K-25 |)ovver |)lant.
3\M1)H, Bk. I, Vol. 12. pp. 12.5-12.6 and App.
C:7. DASA.
net of transmission lines and substa-
tion facilities, built and operated by
local utility firms, including the Pacif-
ic Power and Light Company. While
awaiting outcome of the prolonged
negotiations with the BPA, the Corps
of Engineers' Real Estate Branch
moved ahead with acquiring these ex-
isting facilities. At the same time, Lt.
Col. Franklin T. Matthias, the area
engineer, and his staff, joined with
BPA, Pacific Power, and Du Pont en-
gineers in drawing up plans for the
extensive alteration and addition to
the existing distribution system, and
expediting procurement of materials
to carry these out.^^
Project engineers surveying the ex-
isting electrical distribution facilities
at the Hanford site found that trans-
mission lines crisscrossed the area at
a number of points, constituting a
basic power net that could be readily
adapted to project requirements. The
BPA had built two 115-kilovolt lines
through the area that hooked in to
the main Bonneville-Coulee twin 230-
kilovolt high line at the Midway Sub-
station, located near the western
boundary of the site. One of these
115-kilovolt lines extended through
site territory east to Hanford village,
and thence southeast to Walla Walla,
Washington, where it terminated; the
other ran generally west from Midway
across the western boundary of the
site and then northwest to Ellensburg,
Washington. Pacific Power's utility
lines in the area had been built to
serve the small local communities and
3«Ihid., Bk. 4, \ol. 4. pp. 2.11-2 12, DA.SA;
Matthias Diaiv. 16-17, 26 and 31 Mai 4;i. OROO:
0(.K Basic Data on HKW, Pasco, Wash.. 19 Mav V.S.
pp. 10-1 1, .\dniin Files, Gen Corrcsp, 601.1 (Han-
ford), MDR.
392
MANHAITAN: THE ARMY AND THE AEOMIC BOMB
some individual farms. Its main line,
carrying 66 kilovolts, ran north from
Pasco through Richland, Hanford,
and White Bluffs, thence west to the
Priest Rapids Irrigation District's hy-
droelectric plant on the Columbia
River at the northwest corner of the
site; this 66-kilovolt line tied into the
BPA's 115-kiiovolt line at Hanford,
thus making it possible for Pacific
Power to secure current as needed
from the Bonneville system. Short
sections of additional 66-kilovolt
lines, which provided service to com-
munities in the vicinity of the site,
also traversed the project area. To
ensure effective control and avoid un-
necessary duplication of facilities,
Manhattan eventually acquired all of
Pacific Power's lines and substations
within the site.^^
While the existing transmission net
at Hanford proved to be more than
adequate for initial construction ac-
tivities, it was not capable of bringing
the high-voltage loads required for
the production plants. For this pur-
pose, BPA engineers designed a 230-
kilovolt loop, approximately 52 miles
long, that tapped the Bonneville-
Coulee lines at the Midway Substation
and then ran eastward in a circular
configuration that brought it near
each pile and separation plant. To
ensure complete reliability of service,
the BPA built this loop so that cur-
rent might be fed in from either end
and also constructed two additional
230-kilovolt feeder lines to supple-
ment those already running between
the Bonneville and Grand Coulee hy-
droelectric plants. Substations erected
in the plant areas reduced the high-
voltage current to the levels required
for the different plant operations. ^^
rhe lines acquired from Pacific
Power also became an integral part of
the Hanford power network. Electrici-
ty for the metal fabrication and test-
ing area, the administration area, and
Richland village — all located in the
southeastern corner of the site — was
fed in through the existing BPA 115-
kilovolt line from Midway to Hanford,
and thence carried southward over
the power company's 66-kilovolt Han-
ford-Pasco line. This latter section
was the only part of the company's
original system retained as part of the
permanent distribution net after Du
Pont completed construction. Experi-
enced Pacific Power crews, under sub-
contract to the Hanford Engineer
Works, did much of the construction
and modification work on the trans-
mission system.
On 25 February 1944, Du Pont
took over complete responsibility for
operation and maintenance of all
electrical facilities that were not an in-
tegral part of the BPA system. The
only exception was the Priest Rapids
plant, which Pacific Power operated
under a separate government contract
with technical assistance from Du
Pont. This plan was consistent with
the Army's stringent security policy of
reducing to a minimum the number
of firms involved in operational
phases of producing fissionable mate-
rials. Even though BPA crews contin-
ued to maintain and repair its lines in
the project area, the area engineer
"MIDH, Bk. 4, Vol. 4, pp. 2.11-2.12 and App, A5
(Map, Transmission Systems at HEW), DASA; Du
Pont Constr Hist, Vol. 1, p. 10, and Vol. 4, p. 1059,
HOO.
38 MDH, Bk. 4, Vol. 3, pp. 7.1-7.3, and Vol. 5, p.
7.3. DASA; Matthias Diary, 22 and 27 Jul 43,
OROO; Du Pont Constr Hist, Vol. 4, pp. 1059-63,
HOO; Groves, \ow It Can Be Told. p. 89.
ELEC/IRIC POWER
393
kept them under constant security
surveillance.^^
In developing Hanford's complex
transmission facilities, the BPA and
Pacific Power found that procurement
of electrical equipment — in particular,
wire, generators, and utility poles —
was one of their most difTicull prob-
lems and repeatedly sought assistance
from Manhattan. 1 he BPA, for exam-
ple, had to prepare extensive data to
justify its many priorities requests for
electrical equipment, and Colonel
Matthias assigned an electrical engi-
neer from his staff to the BPA's engi-
neering office in Portland to assist
with this task. A typical problem for
the Hanford distribution system was
procurement of cable for the 230-
kilovolt loop in the production plant
area. When Manhattan applied for an
allotment of scarce copper for this
purpose, the War Production Board
39 MI^H, Bk. 4, Vol. 3, p. 7.3, and Vol. 5, pp. 7.2-
7.5. D.ASA; Du Pont Constr Hist, Vol. 4, pp. 1061-
62 and 1065-67, HOO; Ltr, Robins (Act Chief of
Plngrs) to CG SO.S, sub; Acquisition of Land for
Gable Proj, Pasco, Wash.. 8 Feb 43, Incl to Memo.
Col John J. O'Brien (CE Real Estate Br chief) to Lt
Col Whitney Ashbridge (CE Mil Constr Br), sub:
Land .Acquisition in Connection With MD. 17 .Apr
43, .Admin Files, Gen Corresp, 601 (Santa Fe),
MDR: Matthias Diary, 21 and 27 Apr 43, OROO;
Memo. G. P. Church (Du Ponts Field Proj Mgr) to
T. W. Brown, R. E. Burton et al. (Du Pont and Han-
ford area office staff members), 17 Apr 43, Incl to
Ltr. Matthias to Dist Engr. sub: Proposed Policy for
HEW, 23 .Apr 43. Admin Files, Gen Corresp, 161
(Du Pont), MDR.
recommended that it use aluminum
cable. Project engineers assented to
using aluminum, but then experi-
enced both difficulty and delay in se-
curing the board's sanction for the
substitution. As a result, Hanford
could not begin procurement of the
cable until July 1943. Fortunately,
continuing and vigorous expediting
efforts by the Army enabled the BPA
to complete the loop in time to fur-
nish the electrical energy essential for
initial operations of the plutonium
production piles in late 1944.*°
When considered against the back-
ground of severe shortages of both
electric power and equipment in a
wartime economy, securing an ade-
quate supply and distribution of elec-
tric power for the atomic installations
was a significant achievement for the
Manhattan Project and its Army ad-
ministrators. Their early recognition
of the need for firm priorities com-
mitments and skillful use of War
Department resources for obtaining
them guaranteed Manhattan contin-
uous access to the electric power
essential for all of its wartime
operations.
40 MDH, Bk. 4, Vol. 3, pp. 7.1-7.2, and Vol. 5, p.
7.3. DASA; Matthias Diary, 15 Jun, 19, 22-23 and
28-30 Jul, and 6 Aug 43, OROO; Groves Diarv, 29-
30 Jun and 1, 7, 9, 12-16, 20 Jul 43, LRC;; Du Pont
Const Hist, Vol. 4, p. 1062, 1400; Groves, Xow It
Can Be Told. p. 89.
CHAPTER XIX
Communications and
Transportation
Along with electric power, commu-
nications and transportation constitut-
ed vital process support elements for
the Manhattan Project's laboratories,
production plants, and atomic com-
munities. With the major sites located
in widely separated regions of the
country, successful project operations
were dependent on achieving effective
coordination via an efficient commu-
nications network and on timely pro-
curement of materials from suppliers
in all parts of the United States via
readily accessible rail and highway
transport. Because preliminary sur-
veys of the Tennessee, Washington
State, and New Mexico sites revealed
that existing local communications
and transportation facilities were rela-
tively rudimentary, the Army — under
conditions demanding extraordinary
measures of safety and security —
faced the large task of developing
them into the complex and sophisti-
cated systems required by the atomic
installations.
Communications
A common sight in and around the
Clinton, Hanford, and Los Alamos in-
stallations during their developmental
phase was linemen busily stringing
and connecting miles of wire or cable,
in some instances, across great
stretches of mostly open and uninha-
bited countryside. While much of this
was for power transmission, a consid-
erable part was for complex and
highly integrated communications
systems.
Communications at each of the
atomic installations, for all practical
purposes, had to be constructed from
the ground up, because none of them
had more than the minimum facilities
normally found in rural, sparsely pop-
ulated regions in the United States
before World War II. Of the three
sites, Hanford had the most complete
existing system with telephone service
being furnished to the towns and
farms in the area by five independent
companies and the Pacific Telephone
and Telegraph Company. Further-
more, the Bonneville Power Adminis-
tration maintained for its own use a
two-way radio network in the vicinity
of its 115-kilovolt lines in the Han-
ford area. In contrast, Clinton had
only one telephone line, a 6-mile sec-
tion of the Clinton-Harriman toll line,
that served a few of the farmers who
COMMl'NICAIIONS AND IRANSPOR 1 A HON
395
lived in the area and Los Alamos had
only a government -owned Forest
Service line, operated by the Moun-
tain States Telephone and Telegraph
Company and providing service to the
boys' school located on the site. With
respect to all of the privately owned
communications facilities found on
the atomic sites, the War Depart-
ment's policy was to acquire them
and, wherever feasible, to integrate
them into the extensive systems be-
ing planned for Manhattan's atomic
installations.^
At each of the major sites, Manhat-
tan worked closely with the Army
Signal Corps, with local telephone
and telegraph companies, and with
prime contractor organizations to
install the most up-to-date communi-
cations available under wartime pro-
curement conditions. Because of
unusual safety and security require-
ments, these communications includ-
ed such specialized instruments as
alarm devices, to warn of fire and
other hazardous conditions in time to
guarantee evacuation of dangerous
areas, and two-way radio networks
and radio-monitoring devices. Con-
nections into the nationwide Army
Command Administrative Network
' MD», Bk. 1, Vol. 12, "Clinton Engineer Works,
Central Facilities," p. 15.1; Bk. 4, Vol. 5, "Construc-
tion," pp. 7.7-7.8; and Bk. 8, Vol. I, "Ceneral," pp.
5.2,S-.^).L'4, IMSA. Matthias Diarv. 12 Mar and 7 Apr
43, OROO. In Admin Files. Gen Corresp, MDR. see
601.1 (Hanlord) for OCE, Basic Data on HP:VV,
19 May 43, p. 11, and Ltr, Robins (Dep Chief of
Engrs) to CG ASF, sub: Acquisition of Land for
HKW Proj, 5 Jun 44; and 601 (Santa Fc) for Etrs,
Robins (Act Chief of Kngrs) to (X; SOS, subs: Ac-
quisition in Fee of Approx 56,200 Acres of Land for
Demolition Range Near Kingston, Fenn., 29 Sep 42,
and Acquisition of Land for Gable Proj, Pasco,
Wash., 8 Feb 43, Inds to Memo, Col John J.
O'Brien (CF Real Estate Br chief) to Lt Co! Whitney
.Ashbridge (CE Mi! Constr Br), sub: Land Acquisi-
tion in Connection With MI), 17 Apr 43.
teletype (ircuit with codification
equipment provided rapid and secure
communication between the various
facilities of the Manhattan District, in-
cluding Ceneral Croves's personal
headquarters in Washington, D.C.
Other rWX equipment furnished
direct teletype service between prime
contractors' field organizations and
their home offices. An example was
Du Font's private teletypewriter
service between its Hanford and
Richland offices and head office in
Wilmington.^
Ihe Army was more directly con-
cerned with details of designing,
building, and operating communica-
tions than in most other process sup-
port activities, partly because its
Signal Corps had the necessary exper-
tise to furnish communications speed-
ily and the Army Command Adminis-
trative Network was an established
communications system that could
serve the specialized needs of the
project. Also, the Army wished to
maintain close control over all aspects
of the project's security system in
which all forms of communications
played a vital role.
The extent of the Signal Corps'
participation in development of
atomic project communications varied
from site to site. At Clinton, the 4th
Service Command signal officer
served chiefly in an advisory capacity
to the district engineer, participating
most actively in the period before the
establishment of a communications
unit in the Clinton Area Engineers
2MDH, Bk. 1, \'ol. 12. pp. 15.5-15.6; Bk. 4.
Vol. 5, p. 7.8; and Bk. 4, \'ol. 6, "Operations," pp.
12.2-12.3, DASA. Matthias Diarv, 16 Mar, 7 Apr,
6 May 43, OROO. Du Pont Constr Hist, Vol. 4. pp.
1357-60, HOO.
396
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Office in April 1943. At Los Alamos,
the Signal Corps' contribution was
limited to furnishing technical advice
and some items of equipment. But at
Hanford, planning and overseeing
construction of the telephone system
was one of the largest single jobs un-
dertaken by the Signal Corps in the
United States during the war.^
In early 1943, after the Signal
Corps had agreed to Colonel Mar-
shall's request to assist Manhattan in
building the Hanford telephone
system, 9th Service Command signal
officers participated in a series of
planning meetings with representa-
tives of the State of Washington
Public Utilities Commission, local
telephone companies, Du Pont, and
the Hanford Area Engineers Office. A
problematic issue was the division of
responsibilities for design and con-
struction of the Hanford system: Du
Pont and the Signal Corps both
wanted the task. Apprised of this situ-
ation in June, Groves immediately
conferred with officials in the Office
of the Chief Signal Officer in Wash-
ington, D.C., and, after emphasizing
the project's requirement for com-
plete secrecy, successfully worked out
an arrangement with them for Du
Pont to design the system in conform-
ity with standard specifications of
Army telephone installations. Accord-
ing to this working agreement, the
Signal Corps' Plant Engineering
Agency of Philadelphia would provide
3MDH, Bk. 1, Vol. 12, pp. 15.1, and Bk. 8,
Vol. 1, "General," pp. 5.23-5.24, DASA; George
Raynor Thompson, Dixie R. Harris, Pauline M.
Oakes, and Dulany Terrett, The Signal Corps: The
Test, United States Army in World War II (Washing-
ton, D.C.: Government Printing Office, 1957), pp.
440-41; Matthias Diary, 7, 9, 24 Apr 43, OROO; Du
Pont Constr Hist, Vol. 2, pp. 513-15, and Vol. 4,
pp. 1067-68, HOO.
Du Pont with its technical expertise, if
needed; Pacific Telephone and Tele-
graph Company crews, under supervi-
sion of the 9th Service Command
signal officer, would construct the
system; both the Signal Corps and
area engineer would take responsibil-
ity for procuring equipment and ma-
terials; and Du Pont would give Pa-
cific Telephone and Telegraph any
assistance it needed in handling mate-
rials and securing workmen.*
The division of responsibilities for
design and construction of the Clin-
ton and Hanford communications fa-
cilities followed a similar pattern; the
prime contractors had responsibility
for overseeing the task and the local
telephone company for actual con-
struction. At Clinton, Stone and Web-
ster designed the system in consulta-
tion with the 4th Service Command
signal officer and erected the tele-
phone buildings, but shared the line
construction work with the Southern
Bell Telephone and Telegraph Com-
pany. At Los Alamos, the Mountain
States Telephone and Telegraph
Company performed whatever con-
struction was necessary.^
As Manhattan's production installa-
tions reached the operations stage,
the Army increased security by tight-
ening up its administrative machinery
for control and supervision of com-
munications. At Clinton, for example,
the administrative element supervis-
" MDH, Bk. 4, Vol. 5, pp. 7.5-7.7, DASA; Mat-
thias Diary, 20 May 43, OROO; Du Pont Constr
Hist, Vol. 4, pp. 1068-71, HOO; Groves Diary. 10-
1 1 Jun 43, LRG.
5 MDH, Bk. 1, Vol. 12, pp. 15.1-15.3, and Bk. 8,
Vol. 1, pp. 5.23-5.24, DASA; Completion Rpt,
Stone and Webster, sub: Clinton Engr Works, Con-
tract W-7401-eng-13, 1946, pp. 63, 68-69, 87-89,
116, OROO.
COMML NICAl IONS AND 1 RANSPOR lAI ION
397
ing communications — at first only a
unit in the Clinton area office, then
later part of a section under the Dis-
trict's executive officer — became in
early 1945 a separate branch of the
Operations Division at District head-
quarters in Oak Ridge. Similarly, at
Hanford, when the area engineer en-
larged his communications staff, he
requisitioned Women's Army Corps
personnel because they were more
readily subject to close security con-
trol than civilian employees.®
During the war, however, the Army
never actually took over operation of
project communications facilities
except, of course, those that were
used to carry on the business of the
District itself and those at Los
Alamos, which operated as a military
post. Completed installations were
turned over to the operating contrac-
tors. At Hanford, where Du Pont was
both the construction and operations
contractor, the company's operational
staff continued to hire and supervise
employees who manned the switch-
boards, operated teletype machines,
and kept the lines in repair. Similarly,
at Clinton, the Roane-Anderson Com-
pany assumed responsibility for oper-
ating the Oak Ridge community facili-
ties, built by Stone and Webster, and
also arranged with the Western Union
Company to provide telegraphic serv-
ice for the town. And the operating
contractors took over plant communi-
cations facilities in the production
areas and employed Southern Bell
Telephone and Telegraph Company
crews, under supervision of the Dis-
trict's Communications Branch, to do
maintenance, repair, and installation
work."^
Transportation
Transportation problems for the
Clinton, Hanford, and Los Alamos
sites were similar to those of furnish-
ing electric power and communica-
tions. Project site selection teams had
chosen locations near well-established
railroad lines and highways, but the
requirement for relative isolation
meant that the sites themselves gener-
ally lacked adequate access to these
nearby facilities. Clinton's primarily
rural acreage had only one major
highway and no rail line, although
main lines of the Southern Railway
and the Louisville and Nashville Rail-
road ran close by the reservation.
Hanford's semiarid farming and
ranching country had a highway
system adequate only to serve its
sparse agricultural population and, in
its northern area, a single-tracked,
second-class branch rail line. Los
Alamos was the most isolated of all,
with only a few secondary roads and a
branch of the Atchison, Topeka and
Santa Fe Railroad some 25 miles dis-
tant.^
Transportation problems fell into
two categories: those within the
« MDH, Bk. 1, Vol. 12, p. 15.1, and Bk. 4, Vol. 5,
App. B57, DASA; Org Charts, U.S. Kngrs Office,
MD, 1 Nov 43 and 26 Jan 45, Admin Files, Gen
Corresp, 020 (MED-Org), MDR.
^ MDH, Bk. 1, Vol. 12, pp. 15.1 and 15.5-15.6;
Bk. 4. Vol. 6, p. 12.1; and Bk. 8, Vol. 1. pp. 5.23-
5.24, DASA. History of Roanc-.Anderson Company
(henceforth cited as Roane-Anderson Hist), Con-
tract VV-7401-eng-l 15, 30 Nov 51, p. 63 and ,App.
D. OROO.
* Historv of Passenger Transportation at Clinton
Engineer Works (henceforth cited as CEW Passen-
ger Irans Hist), Jul 45, pp. 1-2. OROO. OCE.
Basic Data on HEW. 19 Mav 43. pp. 9-12, MDR.
MDH, Bk. 1, Vol. 12. pp. 16.1, 17.1-17.2. 18.1; Bk.
4, Vol. 3. "Design," p. 7.4: and Bk. 8. \'ol. 1, pp.
2*4-2.6, DASA. Du Pont Constr Hist. Vol. 1, pp. 9-
10, HOO.
398
MANHATTAN: IHE ARMY AND THE ATOMIC BOMB
boundaries of a site, where Manhattan
could exercise a great deal of control
over their solution; and those within
the region immediately surrounding
the site, where control was much
more tenuous. The Army's objective
was to achieve a coordinated system
that would adequately serve the trans-
portation needs in both the on- and
off-site areas. In the interests of econ-
omy, both in time and money, the
Army followed a consistent policy of
using, to the maximum extent feasi-
ble, all available means of transporta-
tion and adding new facilities only
where project requirements made
them absolutely necessary.
In those instances where the Army
had to provide new transportation fa-
cilities, it delegated as much of the
task as possible to nonmilitary agen-
cies. Development of transportation
means within the boundaries of each
site became the responsibility of the
construction contractors. At Clinton,
the three major construction contrac-
tors— Stone and Webster, Du Pont,
and the J. A. Jones Construction
Company — designed and built the rail
and road system, respectively, for the
town of Oak Ridge and the electro-
magnetic plant, for the plutonium
semiworks, and for the diffusion
plants; at Hanford, Du Pont expanded
the existing road network and built an
on-site rail system; and at Los
Alamos, the M. M. Sundt and A. O.
Peabody construction companies, with
assistance from post work crews, im-
proved the existing road system and
built many road extensions.
To the extent feasible, the Army
also assigned transportation as a func-
tion of the operating contractors.
Roane-Anderson, for example, pro-
vided transportation for the town of
Oak Ridge, the Tennessee Eastman
Corporation for the electromagnetic
plant area, the University of Chicago-
operated Clinton Laboratories for the
plutonium semiworks, and the Car-
bide and Carbon Chemicals Corpora-
tion for the diffusion plants area. At
Hanford, Du Pont and the Army
shared responsibility for the on-site
railroad net, but the area engineer
maintained the roads, controlled
highway traffic, and operated the bus
service within the site. At Los Alamos,
where security was an overriding con-
sideration, the Army retained almost
exclusive control over operation of all
forms of transportation, limiting ve-
hicular traffic within the reservation
to trucks, buses, and cars driven by
military personnel.®
Except for certain aspects that re-
quired negotiations with federal agen-
cies, resolution of most transportation
problems was the responsibility of the
Army officer in charge of each of the
sites. He had, for example, to reach
agreement with state and local offi-
cials on building access roads and im-
proving existing highways, to negoti-
ate with local bus companies to in-
crease service between nearby towns
and the site bus depots, to arrange
with the Transportation Corps' zone
officer for vehicle procurement, and
to supervise the construction and op-
erating contractors. Each officer in
charge had to set up an appropriate
organization within his staff for this
particular purpose.
^MDH. Bk. 1. Vol. 12, pp. 16.1-16.21, 17.1-17.7.
18.1, pas.sim; Bk. 4, Vol. 5, pp. 7.8-7.13, and Vol. 6,
pp. 8.1-8.3; and Bk. 8, Vol. 1, pp. 3.1 -.5. 3 and 5.13-
.5.14, DAS.A. CKW Passenger Trans Hisi, p. 1,
passim, OROO. Du Fonl Constr Hist, Vol. 1, pp.
14.5-53, HOC).
COMMLINICATIONS AND IRANSPOR lA HON
399
Unimproved Santa Fe-Los Alamos Road
During the period when construc-
tion was the dominant activity at
CHnton, the district engineer ad-
ministered day-to-day transportation
matters through a section in the Con-
struction Branch of the District's Clin-
ton Engineer Works (CEW) Central
Facilities Division. He formed a CEW
Iransportation Board in December
1943, comprised of representatives of
the prime contractors, to assist him in
formulating area-wide policies and
procedures concerning passenger
transport, traffic regulations, licenses
and regulatory activities, and govern-
ment-owned vehicles. In mid- 1944, he
reorganized the administration of
transportation, forming in the Serv-
ices Branch of the Facilities Division
two separate sections — Automotive
and Bus Transportation — to monitor
automotive, rail and motor freight,
and bus operations. At the same time,
he transferred the CEW Transporta-
tion Board's functions to his policy-
making operational group, the Cen-
tral F'acilities Advisory Committee. ^°
At Hanford, the area engineer es-
tablished in March 1943 a Transpor-
tation Department in his office to
maintain and operate all transporta-
tion except railroads, which Du Pont
operated, and to oversee all vehicular
procurement — usually surplus stocks
from other Corps of Engineers
projects or from Transportation
'»M1)H. Bk. 1, \()1. 12, pp. 18.4-18.3. DASA;
CKW Passenger Irans Hist, pp. 9-10, OROO; Org
Charts, l^.S. Kngrs OHice, Ml), 1 Nov 43, 1 Jun,
28 Aug, and 10 Nov 44, 2() )an 4,3, MDR.
400
MANHATl AN: 1 HE ARMY AND 1 HE AlOMIC BOMB
Improved Santa Fe-Los Alamos Road, ascending to the Pajanto Plateau from the Rio
Grande valley
Corps sources. Burgeoning transpor-
tation requirements resulted in a de-
partmental reorganization in late
1944, first as the Transportation
Office under the chief of operations
and finally as the Transportation
Branch in the Administrative Division.
These requirements gradually de-
clined in early 1945 with the comple-
tion of major construction at the site,
making possible a substantial reduc-
tion of employees in the branch. ^^
Primarily for security reasons, but
also consistent with its administration
as a military post, the Army furnished
and operated almost all types of
"MDH, Bk. 4, Vol. 5, p. 9.1 and App. B57, and
\oi. 6. pp. 8.1, 18.2, App. 38. DAS A; Matthia.s
Diaiv, 6 Mav and 23 Jun 43. OROO.
transportation at Los Alamos. In mid-
1943, the post commander assigned
responsibility for transportation to a
supply and transportation officer in
the Supply Division, who, in turn, del-
egated actual operation of the Motor
Pool and Motor Maintenance Section
to an assistant transportation officer.
This administrative arrangement, with
only minor changes, continued for
the duration of the war. ^^
Motor I'ehicles and Roads
Manhattan's transportation require-
ments were out of the ordinary, even
for a wartime activity. For example,
■2MDH, Bk. 8, \-.
DASA.
1. pp. 6.22-6.27 and App. B3,
COMMUNICATIONS AND TRANSPORTATION
401
the project was unusually dependent
upon the motor vehicle for transport-
ing its employees relatively long dis-
tances from the communities where
they lived. Primarily for safety and se-
curity, major installations at both
Hanford and Clinton were not only
miles apart but also a considerable
distance from their operating commu-
nities. Oak Ridge and Richland, and
from off-site towns where many other
project employees lived. Plant-operat-
ing employees residing at Richland
had a round trip of from 58 to 76
miles each day. Workers coming from
Knoxville by bus rode some 17 to 20
miles to the Oak Ridge terminal and
then transferred to other means of
transportation to get to specific site
locations, including the gaseous diffu-
sion plant nearly 10 miles west of the
terminal. Even at Los Alamos, where
the need for exceptional security dic-
tated housing as many employees as
possible on the site, hundreds of con-
struction and service personnel com-
muted long distances from off-site
communities. Typical was the 35- to
45-mile trip from Santa Fe over
mountainous and generally poorly
maintained state highways. ^^ (See
Maps 5, 4, and 5.)
Manhattan relied primarily upon
motor buses to cope with its huge
commuter problem. At Hanford, the
Transportation Department regularly
maintained, scheduled, dispatched,
and operated more than 900 buses,
making it probably the world's largest
motor bus operator in a given area
during World War II. ^'^ From April
1943 to March 1945, a total of 20
million passengers rode some 340
million miles on the Hanford system.
The I ennessee bus system, which was
maintained and operated by civilian
firms under government contract, was
considerably smaller. Nevertheless, by
the end of 1944, more than 350 buses
were in off-area service. In addition, a
substantial number more, operated by
Roane-Anderson's CEW Bus Author-
ity formed in December 1943, provid-
ed service within the boundries of the
site (as, for example, for the towns-
people living in Oak Ridge). Manhat-
tan regularly received assistance from
the Transportation Corps, acting
through its appropriate zonal com-
mands, in procurement of most of the
buses used at Clinton and Hanford
and in the operation of its various bus
systerris.^^
As on countless other war projects,
thousands of Manhattan workers com-
muted in private automobiles. At
Clinton, this was the major means of
passenger transportation in the early
stages of the project, and by early
1944 nearly twenty-five thousand
automobiles were passing through the
reservation gates each day. The Army
took steps to supervise and control
■Mb.d.. Bk. 4. \ol. 5. App. Bl (Area Mileage
lahs). and Bk. 8. \'ol. 1, pp. 2.4-2.5 and 6.2-6.3,
1).\SA; I)u Pont Opns Hist. Bk. 16, "Transportation
Department: Automotive Operations to Julv 1,
1945," pp. 1-2. IKK): (,F.W Passenger 1 rans Hist,
pp. 2 and 7, OROO: (Completion Rpi. Stone and
Webster, sub: CKW. pp. 12-13, OKOO.
'* Chicago, for example, with the largest city bus
svstem in the I'nited States, had some 800 buses in
regular operation during the war. See MDH, Bk. 4.
\'ol. 4, "I.and Acquisition, Hanfoid Engineer
Works," p. 9.5, DASA.
iMbid., pp. 9.1-9.5. DASA; CEW Passenger
Erans Hist, pp. 11-39 and Exhibits B and D,
OROO; Matthias Diarv, 30 Oct 43, OROO: Du Pont
Opns Hist, Bk. 16, pp. 1 and 7, HOO. At Hanford,
Du Pont had responsibility for operation and main-
tenance of all projed automotive equipment in
plant areas and of thai in Richland that was not
under direi I Ariin (onlrol.
402
MANHA riAN: IHK ARMY AND IHE A lOMIC BOMB
Oak Ridge Bus Terminal
this heavy traffic, encouraging share-
the-ride programs; assisting employ-
ees in procurement of rationed tires
and gasoHne; and trying, without too
much success, to provide automobile
repair and maintenance facilities. ^^
Manhattan's heavy dependence
upon buses and automobiles placed
further strain upon existing road net-
works, which already were disintegrat-
ing under the pounding they received
from the hundreds of trucks and
other vehicles operated by the con-
struction contractors. While the Armv
itself did not undertake to build and
maintain roads for the project, area
engineer personnel at each of the
sites devoted much time to supervis-
ing the efforts made by the major
construction firms to improve original
's CEVV Passenger Irans Hist, pp. 44-51, OROO.
roads, design and build efficient new
plant road networks and connecting
routes, and maintain all road and
highway facilities essential to project
operations. In most instances, the
major contractors followed the prac-
tice of subcontracting road work to
local construction firms that had
equipment and working crews for the
job.
Road development at Hanford will
serve as an example of what in gener-
al was done at all the major sites. In
January 1943, the site selection team
had reported to General Groves that
the road system of the Washington
site consisted essentially of two main
state highways: one running east from
Yakima through what would become
the heart of the production plant
area, thence to Hanford and on to
COMMl'NICAIIONS AND IRANSPOR 1 A HON
403
Spokane; and the otlier running ironi
Richland to Hanford by way of the
Vakinia River horn. This major exist-
ing axis, plus a few secondary roads,
eventually became the nucleus for a
system ot 350 miles oi roads of all
types, most of them asphalt surfaced,
including two four-lane divided high-
wa\s running from the vicinit\ of the
pile and separation plants southeast-
ward to Richland. When critics later
questioned the wisdom of building
these broad thoroughfaies across
miles of arid sagebrush grazing lands.
Groves pointed out that they were
consistent with the Army's policy of
preparing for every forseeable contin-
gency. Manhattan had to provide for
the quick evacuation of thousands of
woikers in the event of an explosion,
or similar accident, in the production
area that conceivably might spread
deadly radiation over a wide zone.
Under the day-to-day supervision and
inspection of the area engineer's staff,
Du Pont planned and built the Han-
ford road system, employing two Cali-
fornia road-building firms to do most
of the actual earth moving, grading,
and paving. ^"^
Existing access roads near the Man-
hattan reservations were generally in-
adequate and poorly maintained. The
Army improved the original off-site
road networks to keep them in usable
condition and arranged for construc-
tion of certain new connecting routes.
Whenever and wherever possible.
" t'rtliiii Rpi. sub: HF.W Site Investigation, 2 Jan
4;^. Adniin Fiks, Ckn Clorresp. (iOO.OS, MDR; Mat-
thias I)iar\, 7 and 17 Apr. <> Mav, 27 Jul. 9 Nov 43,
()R(K): MDH, Bk. 4, \'ol. 3. pp. 7.4-7.5, and Bk. 4,
\'ol. 5. pp. 7.9-7.11 and App. B4 (.Summary of Con-
tracts and Subcontracts). I).AS,\; I)u I'ont C.onstr
Hist. \<)i. 1, pp. 5 and 9-10. and \'ol. 4, pp. 484-
H.5. 1089-92. 1094-96. 1101-06. 1111-12. IKK);
Du Pont Opns Hist, Bk. 16, pp. 1-2, HOC).
Manhattan tried to secure agreements
with county, state, and federal high-
way officials for sharing the work of
carrying out improvements on access
roads. For example, in November
1943, District representatives met
with officials of the state of Tennes-
see, the Public Roads Administration,
Roane and Anderson Counties, and
the principal contractors to work out
an overall access road program,
agreeing to assignment of priorities
so that each project would be under-
taken in order of its urgency. In car-
rying out the program, however,
Manhattan found that while state and
local highway officials endeavored to
plan and build the sorely needed
routes, they were unable in most
cases to provide them in time to meet
project requirements. Consequently,
much access road work had to be
done by Manhattan itself.^*
Typical was the case of the Gallaher
Bridge and Blair Roads. Manhattan
submitted plans and specifications for
these new roads to the Public Roads
Administration in November 1943 as
a basis for approval and allotment of
the necessary funds, but the normal
procedures of the Public Roads Ad-
ministration and the Tennessee De-
partment of Highways and Public
W'orks preliminary to construction of
a new road were so complicated and
time-consuming that a start on build-
ing of the two access routes was not
likely to be made until April 1944.
Because the roads were needed ur-
gentlv to provide good access from
the west and north to the gaseous dif-
fusion area, the Armv built them as
'8. MDH. Bk. 1. \()1. 12. pp. 16.10-16.11, DASA;
Matthias DiaiN. 17 Apr and 9 Nov 43. OROO; Du
Pom Constr Hist, \ol. 4, p. 1096, HOG.
404
MANHAIIAN: IHE ARMY AND IHK A lOMIC BOMB
quickly as possible. Fhc Real Estate
Branch, Ohio River Division, Corps of
Engineers, acquired the rights of way
and the district engineer contracted
with two road-building firms to do
the actual construction. Work on the
Gallaher Bridge Road started in mid-
January and on the Blair Road at the
beginning of February. Both roads
were in use by May 1944.^^
In spite of vigorous efforts, the
Army experienced considerable diffi-
culty in maintaining project road net-
works, especially those outside the
reservations. Constant and heavy use
of roads originally designed to carry
only secondary traffic was one of the
factors that contributed to mainte-
nance headaches. Another was the
problem of coordinating the activities
of state, county, and local authorities
who had responsibility for repair and
upkeep of many of the off-area access
roads. State and county maintenance
crews were handicapped by lack of
equipment, workmen, and funds. At
Clinton, the Army employed its own
project personnel and equipment for
road maintenance, financing the work
from funds allotted for the purpose
by the Public Roads Administration.
It followed a similar policy at Han-
ford, where the Public Roads Admin-
istration provided money to the
Washington State Highway Depart-
ment and local county highway de-
partments. At the Los Alamos reser-
vation, the Army hired road-building
contractors to assist state and local
highway crews in maintenance of off-
site roads. ^°
'«MDH, Bk. 1, Vol. 12, pp. 16.11-16.12, DASA.
20 Ibid., pp. 16.16-16.17, DASA; Du Pont Constr
Hist, Vol. 4, p. 1096, HOO; Matthias Diary, 6 May
and 9 Nov 43, OROO. Los Alamos project records
available to the author did not reveal whether the
Railroads
While Manhattan made extensive
use of motor vehicles to transport
manpower, it shipped most materials
and equipment by rail. This meant
construction of miles of spur lines
and plant rail nets to connect installa-
tions with main-line railroads. Ihe
expense and effort could be justified
because they eliminated costly and
time-consuming shipment by truck
from off-site railheads. Relatively few
rail transport problems arose for the
Army in Tennessee. But at the Wash-
ington site, Groves and the Hanford
area engineer became involved in a
prolonged controversy with some of
the western railroads concerning both
the quality and extent of service to be
provided for the plutonium works.
The rail net at Clinton consisted of
two separate and unconnected sys-
tems. Stone and Webster built and
operated the eastern rail net — or Cen-
tral System, the popular designation
until Roane-Anderson took over in
1944 — which provided service from
the Louisville and Nashville's Cincin-
nati-Knoxville line to the town of Oak
Ridge and the electromagnetic plant
area. {See Map 1.) The western rail
net, built and operated by J. A.Jones,
provided the gaseous diffusion plant
area with direct service from the
Southern Railway's Cincinnati-Chatta-
nooga line. The only plant area not
directly served by rail was the plutoni-
um semiworks. To cope with an early
shortage of transportation for workers
commuting from off-area towns, the
Army obtained an order from the
Office of Defense Transportation for
state of New Mexico received funds from the Public
Roads .Administration.
COMMUNICATIONS AND IRANSPORTA HON
405
Gallaher Bridge Road at the Tennessee Site
the Louisville and Nashville to oper-
ate passenger trains between Knox-
ville and Oak Ridge. This service, un-
wanted by the railroad company and
never popular with the patrons,
ended in the summer of 1944 when
off-area bus service had increased
sufficiently.^^
One important feature of the Rich-
land-Hanford area was its proximity
to four main railroad lines: the Union
Pacific; the Northern Pacific; the Spo-
kane, Portland, and Seattle; and the
Chicago, Milwaukee, St. Paul and Pa-
cific. {See Map 4.) Only the Milwaukee
2» MDH, Bk. 1. Vol. 12, pp. 17.1-17.7 and 18.21,
DASA; CEW Passenger Trans Hist, pp. 1 1 and 40-
41, OROO; Completion Rpt, Stone and Webster,
sub: CEW, pp. 20 and 167 (map), OROO.
Railroad's Priest Rapids Branch pro-
vided direct service into the site. This
branch ran from the main line at Bev-
erly Junction, located north of the
site, some 46 miles (25 of them within
the project area) south and east along
the Columbia River to White Bluffs
and Hanford, where it terminated.
The other main-line railroads inter-
connected at Pasco, about 14 miles
down river from Richland. Pasco was
the location of a large Transportation
Corps holding and reconsignment
point with extensive warehouse facili-
ties and a railroad siding. In February
1943, the Hanford area engineer ar-
ranged through the Corps of Engi-
neers' Pacific Division and the 9th
Service Command for transfer of the
406
MANHATTAN: IHE ARMY AND IHK A rOMIC BOMB
warehouses to the Manhattan District.
Combined with expert assistance from
Corps of Engineers officers assigned
to the holding point, these facihties
proved invakiable in handhng the nu-
merous shipments made to Hanford
while the Priest Rapids Branch under-
went extensive reconditioning.^^
Working closely with the area rail-
roads, Du Pont drew up a rail service
improvement plan for Hanford, with
provisions for a thorough overhaul of
the second-class Priest Rapids Branch
and its extension from Hanford
southward to Richland; for building
of a complex access rail system in the
plant area; and for construction of a
southern rail connection to link Rich-
land with the three major lines run-
ning out of Pasco to the south of the
site. Consistent with this plan, the
Milwaukee Railroad began recondi-
tioning and extending the Priest
Rapids Branch in the spring of 1943.
Its objectives were strengthening the
existing track bed and numerous tres-
tle bridges so that heavier trains
could be run over the line and, at the
point where the branch entered the
installation, constructing a large clas-
sification yard to serve as a switching
point for cars entering the plant rail
system. ^^
"OCE. Basic Data on HKW, 19 May 43, p. 12
and enclosed map, MDR; Matthias Diary, 23-25 Feb
and 3 Mar 43, OROO; Du Pont Constr Hist, Vol. 1,
pp. 9 and 16, HOC); Department of the Army, The
Army Almanac: A Book of Facts Concerning the Army oj
the United States (Washington, D.C.: Government
Priming OfTice, 1950), p. 153.
23 MDH, Bk. 4, Vol. 3, pp. 7.5-7.7, and Vol. 5
pp. 9.2-9.3, DASA; Matthias Conf Notes, 1 Apr 43
Wilmington, Admin Piles, Gen Coresp, 337 (W
mington), MDR; Du Pont Constr Hist, Vol. 1, p
152, and Vol. 4, pp. 1087-88, HOO; Matthias Diarv
23 Apr 43, OROO.
Although the Hanford Area Engi-
neers Office closely supervised the
Milwaukee Railroad's work, actively
assisting in procurement of scarce
rails, ties, rolling stock, and other
items, there were interminable delays
in deliveries and a general inability to
cope with the ever-growing traffic. At
Groves's request, Lacey Moore, a
Corps of Engineers rail transportation
expert serving as an adviser to the
Hanford area engineer, inspected the
branch in September. He noted seri-
ous defects in design of the line, in-
cluding its excessive vulnerability to
sabotage. Corrective measures by late
November had somewhat improved
conditions on the branch, leading
Colonel Matthias to observe that
"there is no question that the Milwau-
kee R.R. is now making every effort
to meet the requirements of our serv-
ice, and to expedite freight shipments
as much as possible." ^* Yet systemic
deficiencies continued to be a prob-
lem and were a cause of grave con-
cern for several more months as con-
struction activities at Hanford moved
into high gear.^^
The access rail system in the plant
area comprised 125 miles of track,
mostly in the northwest part of the
site, and served the pile and separa-
tion plants, the metal fabrication and
testing areas, and the administrative
center at Richland. The Guy F. Atkin-
son Company of San Francisco, sub-
contracted by Du Pont, had responsi-
bility for actual construction, with the
Hanford area office providing consid-
erable procurement assistance for
hard-to-get rails, ties, rolling stock.
24 Matthias Diarv, 26 Nov 43, OROO.
25 Matthias Diarv, 1943-44, passim, OROO; Du
Pont Constr Hist, Vol. 1, p. 152, HOO.
COMMUNICATIONS AND IRANSPOR lAIION
407
and other equipment. Once complet-
ed, the Hanford area office and Du
Pont jointly supervised operation of
the plant rail net, with the latter pro-
viding operating personnel.^®
Strong support existed for con-
struction of the proposed southern
rail connection, which involved recon-
ditioning existing lines and building
several miles of new tracks and a
bridge across the Yakima River. The
major railroads in the area whole-
heartedly favored its construction, be-
cause of obvious benefits to them.
Manhattan supported the connection
not only as a shorter route than the
Priest Rapids line for freight coming
from suppliers in the central plains
and southern Midwest states but also
as an alternate rail access in the event
of sabotage. And Du Pont endorsed
the connection because it was not at
all certain that the Priest Rapids line
would be able to move, on sched-
ule, the undetermined — but obviously
large — amount of construction mate-
rials that would have to be shipped by
rail at the height of the construction
period.
But the unsettled question over
who should bear the burden of cost
of new construction delayed any
prompt action. When lengthy negotia-
tions in the spring and summer of
1943 failed to produce an agree-
ment. General (iroves — determined
to get a firm decision — personally vis-
ited Union Pacific President William
Jeffers, who was in Washington serv-
ing as the War Production Board's
rubber administrator. The informal
understanding that resulted provided
for construction of the southern con-
nection by the Union Pacific and
Northern Pacific Railroads, with the
government bearing the entire cost of
any new construction and the rail-
roads agreeing to pay a user's fee.^"^
Despite the Groves-Jeffers under-
standing, the participating railroads
were unable to break a stalemate over
financial terms, and new legal bottle-
necks loomed up suddenly. At the
end of August, the Great Northern
Railroad, joint owner with the North-
ern Pacific of the Spokane, Portland,
and Seattle Railroad, began a formal
investigation to ascertain why its area
railroad had not been included in ne-
gotiations concerning the southern
connection. Meanwhile, the Office of
Defense Transportation informed
Union Pacific that it would not ap-
prove a contract between the War De-
partment and the railroads for con-
struction of the southern connection
and the Interstate Commerce Com-
mission wrote to General Groves that
the connection could not be built
without its approval because it would
constitute a link in an interchange be-
tween the through lines of the Mil-
waukee and the Union Pacific and
Northern Pacific, which made it sub-
ject to ICC jurisdiction.^^
When the Office of Defense 1 rans-
portation issued an order in October
prohibiting construction, in spite of a
direct approach bv Groves and the
26 MDH. Bk. 4, \<)1. :<, |)|) 7.(i-7.7, and Xol. 5.
pp. 5.30. 7.11-7.12, App. B4. DASA; Du Poni
Consir Hist, \ol. 4, pp. l()H.5-8() and 1092-94,
HOC): Matthias Dian , !!> Apr and 19-21, 31 Mav
43, OROO.
" MDH. Bk. 4. \ <)!. .'i, pp. 9.2-9.3. DASA; Mat-
thias Diaiv, Apr-Jiil 43. passim, OROO: Oroves
Diarv, 21 and 29 Jul 43, I.RCi; Du Pont Constr Hist,
\'<)1. 4. p. 1091, HOO. Because ihc Priest Rapids
line ran through mountainous terrain and across
several rivers, it was more than usualh susteptihle
to both land slides and sabotage.
28 Matthias Diai\ . jul-Aug 43, passim, OROO.
408
MANHATTAN: THE ARMY AND I HE A lOMIC BOMB
Under Secretary of War to ODT
Chairman Joseph T. Eastman, the
southern connection seemed doomed.
At this juncture, Groves and the Han-
ford area engineer worked through
channels in the Office of the Secreta-
ry of War to get the agency to recon-
sider the case. The area engineer
achieved partial success in this direc-
tion in mid-November 1943, when
ODT, 9th Service Command, and
Transportation Corps representatives
visited the Hanford installation.
These officials, who were assessing
traffic density on transcontinental rail
systems, expressed the view "that the
railroad connection was not only de-
sirable but essential . . . [for dealing
with] the great activity on the trans-
continental lines which is due in the
near future" and promised to re-
commend that it be given serious
reconsideration.^^
Manhattan used the possibility that
the alternate connection might be
constructed as a powerful lever to
pressure the Milwaukee Railroad to
improve the still far from satisfactory
service over its Priest Rapids Branch.
Thus, in December, General Groves
told the railroad representatives that
if they could maintain adequate serv-
ice, "we [will] take no further act-
ion towards developing the connec-
tion. . . . We will, however, . . . con-
tinue our design and layout and other
plans to insure their being ready to
construct the Southern Connection if
and when it is required." The strategy
worked; service on the Priest Rapids
Branch steadily improved in early
1944. But by mid-year, the plutonium
works had reached its operational
phase and rail service declined appre-
ciably, thus obviating construction of
the southern connection. ^°
Air Transport
Ever in a race against time, Manhat-
tan frequently utilized air transport
services to speed up movement of
materials and personnel over the
great distances separating its research
and development centers, procure-
ment facilities, and plant production
areas. For the most part, Manhattan
relied upon the services of commer-
cial airfreight companies for shipment
of such items as blueprints, parts,
tools, and chemicals and on the Army
Air Forces' Air Transport Command
for movement of key personnel.
Because of the rough character of
the terrain, neither Clinton nor Los
Alamos had airfields within the reser-
vation. Clinton used the Knoxville
Airport, accessible over good roads
some 25 miles southeast of the site;
Los Alamos had to depend upon the
Air Command's shuttle service into
Kirtland Field at Albuquerque, some
114 miles by highway, parts of which
were mountainous and often poorly
maintained. At Hanford, where the
^® Ibid., 28 |ul-16 Nov 43 (quotation from
16 Nov entrv), OROO; MFC Miii, 9 Sep 43, OCG
Files, MP Files, Fldi 23, lab A, MDR; Groves Diarv,
2 Aug, 6, 21 and 2« Sep. 8 Oct 43, LRG.
^° Matthias Diarv, Sep-Dec 43 (quotations from
23 Dec 43 and 12 Jan 44 entries), OROO. Further
evidence of the Milwaukee Railroad's intention of
exploiting its control of the sole rail access line into
the Hanford reservation was its application to the
Interstate (Commerce Commission to have the line
from Beverlv Junction to the project boundary aban-
doned as a common carrier. Fortunately, the com-
mission did not approve this request, which would
have required the District to move freight from Bev-
erlv Junction to the site or pay the railroad special
switching charges for doing it. After further negotia-
tions with railroad representatives in November,
Groves and Matthias were able to reach a reasona-
ble agreement on freight charges.
COMMUNICATIONS AND IRANSPOR lA I ION
409
terrain was relatively ilat, Manhattan of the Hanford security air patrol, pi-
loted bv civilians, were used to trans-
port passengers and small freight
items. ^^
maintained a small airfield near the
construction camp. In early 1943, the
area engineer arranged with the Air
Command to fly critical items to the
Spokane Armv Air Field, where a 3' mi:)H. Bk. 4, Vol. 5. pp. 9.3-9.4, and Vol. 6, p.
shuttle service picked them up and ^'^• ^'"'^ '^"^ i.^'"',. V '^f ^^^ofL^^'^^J^.P."
„ , ITT r ir-iJT P""l Const! Hist, Vol. 2, pp. 498-99 and 551,
flew them to the Hanford airfield. In „oo. Matthias D.atv. 30 Apr and 8 Mav 43,
emergencies, the six Army airplanes OROO.
CHAPTER XX
Health and Safety
The health and safety of Manhattan
Project personnel were essential to
the success of the atomic bomb pro-
gram. But in ensuring the workers'
health and safety, the Army faced one
of its most challenging administrative
tasks because of the many unique and
little understood hazards inherent in
bomb development. Among these
were the potentially deadly rays emit-
ted by radioactive elements, the toxic-
ity of a variety of chemical com-
pounds and agents, the danger of
high-voltage electricity employed in
novel ways, the possibility of explo-
sions in experimental work that in-
volved the use of gas and liquids
under great pressure and of high ex-
plosives as propellants, or even the
likelihood of serious injury from
metal objects cast about by tremen-
dous magnetic forces.^
The Army knew that these unusual
hazards must be properly controlled,
for the lives of thousands of atomic
workers were at stake. Although the
* Rpl, H. 1 . Wenscl (lech Secy, S-1 Ex Commit-
tee), sub: List of Hazards, Admin Files, Gen C;or-
resp. 600.12 (Projs and Prgms), MDR; MDH, Bk. 1,
Vol. 7, "Medical Program," p. 3.1, and \ol. 11,
"Safety Program," p. 1.1, and Bk. 8, Vol. 1, "Genet -
al," Sec. 6, and Vol. 2, "Technical" (Project '\" His-
tory), pp. III. 38 and IX. 19, D.AS.A. Where not other-
wise indicated, discussion of health and safety prob-
lems and practices in the Manhattan District is
based on MDH, Bk. 1, Vols. 7 and 11, DASA.
Army had a long and outstanding
record of carrying out public con-
struction projects under extremely
adverse and hazardous conditions,
two factors peculiar to Manhattan
made its task of devising and adminis-
tering appropriate health and safety
measures unsually complicated. One
was the unrelenting urgency that pre-
vailed in almost every aspect of the
nuclear steeplechase to produce an
atomic weapon before the enemy
could do so, with the unfortunate
result that project managers often
were tempted to resort to shortcuts
and speedy solutions that imposed
greater health and safety risks. The
other was the strict policy of compart-
mentalization, which prevented any
widespread sharing of information
and experience gained in dealing with
special hazards. Fortunately, however,
the Army was able to rely on its past
experience on other projects and to
build on the early measures of its
predecessor, the Office of Scientific
Research and Development (OSRD),
to establish highly effective health
and safety programs.^
2 The OSRD policy permitted each research pro-
gram to develop its own health and safety measures.
For example, the Metallurgical Laboratory em-
ployed medical scientist Robert S. Stone, who had
HEALTH AND SAFETY
411
The Health Program
Manhattan's health program devel-
oped slowly but steadily during the
first months of District operation.
Health matters originally were the
sole responsibility of a single medical
officer, Capt. Hymer L. Friedell, who
devoted most of his time to urgent
pile process health problems at the
Metallurgical Laboratory. But in early
1943, when the Army implemented
measures to take over most OSRD
contracts, Manhattan's modest admin-
istrative arrangements for health mat-
ters came under close review. As a
consequence, pressed by a lack of
adequately trained medical personnel,
the District began its quest for expert
assistance to monitor not only the ex-
isting OSRD programs but also those
to be established by the Army in the
future.^
Aware that few American medical
scientists had the special knowledge
needed to understand and solve the
unique problems of the atomic pro-
gram. General Groves launched a na-
tionwide search for qualified medical
personnel. The search revealed that a
professor in the department of radiol-
extensi\c knowledge and experience with radioactiv-
ity, and radiologist Simeon T. Cantril to develop a
system to protect workers from the hazards of radi-
ation in pile experiments. Similarly, the Radiation
Laboratory launched a research program to investi-
gate the best method for detecting the presence of
phosgene, the highh poisonous gas that would be
used in the electromagnetic plant's separation pro-
cess. See Compton, Atomic Quest, pp. 176-78; Staf-
ford L. Warren, "The Role of Radiology in the De-
velopment of the Atomic Bomb," in Radiolo^' in
World War II. Medical Department, I'nited States
Armv, ed. Kenneth D. A. Allen (Washington, DC:
(ioverment Printing Office, 1966), pp. 832 and 845-
46; MDH, Bk. 5, Vol. 2, "Research," pp. 4.10-4.11.
and Bk. 8, Vol. 1, pp. 6.43-6.44, IMSA.
3 MDH, Bk. 1, Vols. 7 and 11, each p. 6.1, DASA;
DSM Chronology, 1 1 Feb 43, Sec. 2(b), OROO.
ogy at the LIniversity of Rochester,
Stafford L. Warren, was mentioned
most frequently as the best in his
field. Professor Warren, Groves de-
cided in February, was the medical
scientist who, with the aid of the Dis-
trict staff, should coordinate the ac-
tivities of all the individual health
groups established and to be estab-
lished by project contractors. Under
the guise of discussing the radiologi-
cal aspects of work to be done for the
government by the Eastman Kodak
Company of Rochester, Groves and
the district engineer met with Warren
at company headquarters. During the
meeting they asked him to direct an
important University of Rochester re-
search program presumably related to
the Eastman project, and also to serve
part time as a medical consultant.
When he indicated he was already
fully involved in other wartime
projects, including one for the OSRD,
they asked him to take some time to
think over the proposal.*
Meanwhile, Groves weighed the
possibility of appointing either Major
Friedell or medical scientist Robert S.
Stone, who was working at the Metal-
lurgical Laboratory on pile radiation
hazards, but concluded that neither
had the outstanding qualifications of
Professor Warren. By giving Warren
more specific information, the Man-
hattan commander reasoned, he
might be persuaded. Groves immedi-
ately arranged for Warren to confer
with other District officials concerning
contractual provisions for the pro-
posed research program at the Uni-
versity of Rochester and to go on an
"MDH, Bk. 1. \ol. 7, p. 6.1, DASA; Memo for
File, X'inccnt (". Jones, sub: Telecon With Groves,
7 Jul 70, CMH.
412
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
inspection trip to some of the other
atomic installations, including a visit
to Oak Ridge to view a site for a hos-
pital. Impressed greatly with what he
saw, and now convinced of the crucial
importance of the project, Warren
agreed in March 1943 to become a
full-time consultant to Groves with a
view to eventual assignment as chief
of the District's health program.^
Program Organization
At the end of June, Professor
Warren became chief of a provisional
medical section at District headquar-
ters, with Major Friedell assigned as
his executive officer and another
Army doctor as his assistant. During
the summer, as the section found
itself overwhelmed with new health
problems, W^arren repeatedly asked
for more personnel but his requests
proved to be of little avail, resulting
in employment of only two civilian
physicians for the Clinton Engineer
Works. Furthermore, the district engi-
neer's announcement of the Medical
Section's formal organization in
August failed to include any provision
for the much-needed additional
personnel.^
Adequate staffing for the Medical
Section awaited solution of the prob-
lem of how to recruit and hold medi-
' Radiology- in IVorlci Uar II. pp. 841-42 and 848-
49; Groves, Now It Can Be Told, p. 421; Memo for
File, Jones, sub: Telecon With Groves, 7 Jul 70,
CMH.
^Radiology in IVorld War II, pp. 841-42: MD Cir
Ltr, sub: Establishment of Med Sec, 29 Jun 43,
Admin Files, MD Directives, Ser. 43, Declassification
and Procedure, MDR; Memo, Nichols (for Dist
Engr) to Warren, sub: Responsibilities of Med Sec,
10 Aug 43. copy in MDH, Bk. 1, Vol. 7, App. Al,
DASA; Marsden Diary, 19 Jun 43, OROO. Colonel
Marsden states that Warren sought authorization for
an allotment of 1 10 medical officers.
cal personnel for at least as long as
security and program continuity re-
quired. Medical personnel brought in
to staff project medical facilities had
to be privy to considerable secret data
in order to perform their jobs proper-
ly. Manhattan's proposed solution was
to militarize the medical staff, a step
that would require collaboration with
the Office of the Surgeon General
(OSG).'
Following extended negotiations,
Manhattan completed details of a
working agreement with the OSG in
September 1943. This agreement
provided that the OSG, giving full
cognizance to both the continuity and
security required for the District
health program, would furnish a
broad range of medical assistance —
for example, commission key District
civilian medical personnel, provide
additional trained personnel from the
Army Medical Department, supply
funds for the medical and dental care
of District military personnel, and fur-
nish medical supplies through Medi-
cal Department facilities for District
use. To ensure that project security
would not be compromised, the OSG
appointed Col. Arthur B. Welsh as a
liaison officer on its staff, giving him
authority to approve all incoming re-
quests from the District. The OSG
also granted permission to the Dis-
trict's Medical Section to retain in its
own files all reports that might reveal
the nature, scope, or military signifi-
cance of the project and agreed to
secure approval from the district en-
gineer for all transfers of Medical De-
partment personnel from the project.
'MDH, Bk. 1, Vol. 7, pp. 6.2-6.3, DASA; Ltr,
Groves to CG ASF, sub: MD Med Facilities, 21 Sep
43, Admin Files, Gen Corresp, 371.2 (Scty), MDR.
HEALIH AND SAFETY
413
These unusual arrangements with re-
spect to security were consistent with
the Manhattan-OSG agreement tliat
responsibihly for project health mat-
ters resided with the district engineer.
The OSG had protested this provi-
sion, but the District had secured an
order from General Somervell that
upheld it, and it remained in effect
for the duration of the Manhattan
Project.®
On 2 November, shortly after the
agreement became effective, Warren
received his commission as a colonel
in the Medical Corps and official ap-
pointment as chief of the Medical
Section. One of his first actions was a
reorganization of the section, to re-
flect the major areas of activity in the
District's health program. He divided
the unit into three branches: medical
research, industrial medicine, and
clinical medicine services; a fourth
branch to oversee the Hanford health
program never materialized, because
Du Pont, the prime contractor, took
over almost all responsibility for this
activity. Another of Warren's concerns
was to expand his staff by recruiting
civilian physicians to serve in clinical
assignments as commissioned officers.
Warren's basic organization contin-
ued with little change up until July
1945 (except for the clinical branch,
which then achieved the status of a
separate division); however, in order
to keep pace with the rapid growth of
the project, he had to greatly expand
® Ltr, Groves lo CG ASF, sub: MD Mt-d Facilitit-s,
21 Sep 4.S, MDR; Blanche B. Armfield, Organizdlnw
and Admitiishalion in World IlV/r //, Medical Depart-
ment, Inited Slates Army (Washington, D.C.: Gov-
ernment Printing Ofllcc, 196;^), p. 229; Radiolotry in
World War II. pp. 846-47: Marsden Diary. 8 Oct and
2 Nov, OROO; Nichols, Comments on Draft Hist
"Manhattan," Incl lo Ltr, Nichols to (^hief ol Mil
Hist, 25 Mar 74. CMH.
its si/e — the original three-man staff
eventually numbering eighty medical
personnel.^
Active and continuing support not
only from the OSG but also from a
number of civilian medical organiza-
tions made possible the District's
rather remarkable success in recruit-
ing a relatively large and specialized
medical staff in a period of the war
when medically trained personnel
were in extremely short supply. Espe-
cially valuable was the assistance pro-
vided by the national office and some
local branches of the Procurement
and Assignment Service. ^° State
boards of medical and dental examin-
ers, particularly those in Tennessee
and Washington, granted concessions
on licensing requirements. Numerous
universities, medical schools, and bio-
logical institutes agreed to provide on
a continuing basis medical specialists
and technicians for District research
laboratories and industrial hygiene
teams. ^^
9MDH, Bk. 1, Vol. 7, p. 6.2 and Apps. C12a-
CI2c (Org Charts, MD Med Sec, Mav 43-Jul 45),
DASA; Radiology in World War II. p. 843: Armfield,
Organization and Administration in World War II. p. 229;
Marsden Diary, 29-30 Oct and 2 Nov 43, OROO.
Warren's eighty-man stafT was comprised of seventy-
iwo officers from the Medical Corps, three from the
Dental Corps, three from the Medical .Administra-
tive Corps, one from the \ eterinary Corps, and one
from the Sanitary Corps.
'"This was an agency established in November
1941 in the Office for Emergency Management, Ex-
ecutive OfTice of the President, to coordinate war-
time allocation and employment of medical, dental,
and veterinary personnel for all federal services, in-
cluding the War Department. For further details on
its organization and acti\ities see John H. MtMinn
and Max Le\in. Personnel m World War II. Medical
Department, Inited States Armv (Washington, D.C.:
(iovernment Printing Office, 1963), pp. 73-74 and
169-73
" MDH, Bk, I, \<)1. 7, pp. I. .5- 1. 6. DA.SA.
414
MANHATTAN: IHE ARM^ AND IHE ATOMIC BOMB
"f^ 1
REGISIRAIION
Col. Stafford L. Warren briefing the Oak Ridge hospital staff
The unique opportunities present-
ed by the District's health program
also faciHtated procurement of medi-
cal personnel. Medical scientists were
quick to recognize that research in ra-
diation had significant applications in
the investigation of cancer, metabo-
lism, and many other aspects of medi-
cine. Fortunately, too, many had not
been recruited for military service be-
cause their specialty did not relate di-
rectly to military medical require-
ments; Colonel Warren and a number
of members of his staff were in this
category. Others came from the field
of internal medicine and from the
basic biological sciences. Colonel
Warren noted in retrospect that what
these men all had in common, with-
out reference to their specialty, was
an interest "in using radiation or iso-
topes as tools to explore basic mecha-
nisms in biologic systems." ^^ The
atomic bomb program promised an
unexcelled chance to pursue this
interest.
Medical Research
The basic objective of Manhattan's
medical research program was collec-
tion of data on potentially damaging
effects of radioactive and highly toxic
materials so that measures and instru-
mentation could be incorporated into
plant design and operations for the
protection of atomic workers. An im-
portant corollary objective was to
12 Radiology in World War II, p. 846.
HKALI H AND SAFE IT
415
learn more about how to treat cases
of overexposure to radiation and poi-
soning from toxic substances. Re-
sponsibility for the medical research
projects at Manhattan laboratories
and a number of universities and bio-
logical institutes under contract
rested with the District's Medical Re-
search Branch, headed by Major Frie-
dell. Colonel Warren, too, with broad
expertise in the areas under investiga-
tion, gave a great deal of attention to
the various research projects. ^^
Collection of medical hazards data
was a direct outgrowth of expanding
scientific investigations into the pile
and electromagnetic methods of pro-
ducing fissionable materials. More
adequate data became essential as the
number of workers involved in re-
search activities increased and as
planning began for large-scale pro-
duction. For example, with the goal
of establishing safety and health pro-
tection standards and developing safe
operating procedures for the pile
process, the Metallurgical Laboratory
at the L^niversity of Chicago formed a
health physics research group. Under
direction of medical scientist Robert
Stone, this group (numbering more
than two hundred by mid- 1945) con-
ducted extensive investigations into
the toxicity of radioactive materials,
giving particular attention to their
chemistry and pathology; designed
monitoring instruments and pile
shielding; and developed treatment
programs for clinical medicine prob-
lems related to pile hazards. ^'^
'••'MDH, Hk. 1. \(>l. 7, pp. 5.2 and ,5.1(i-5.17,
DASA.
'Mbid., pp. 5.1-5.23, DASA; Coiiipion, Alo?iiir
Qiirsl. pp. 177-79; Ciroves, Xow It Can lit- Told. pp.
4LM-2'J.
The University of Chicago-operated
Clinton Laboratories in Lennessee
had a similar research program. Al-
though Stone had administrative re-
sponsibility for the Clinton program,
he left actual direction to radiologist
Simeon T. Cantril, who had worked
under Stone at the Metallurgical Lab-
oratory for more than a year. Using
the pile semiworks, the Clinton team
of scientists, physicians, and techni-
cians tested the effects of radiation on
animals and developed monitoring in-
struments for the Hanford production
piles. Further investigations into the
toxicity of radiation were carried out
by other institutions under subcon-
tract. For example, researchers at Co-
lumbia University in New York inves-
tigated the effects of fast-neutron dos-
ages on mice, those at the Franklin
Institute in Newark (Delaware) con-
ducted similar tests on dogs, and
those at the University of Washington
in Seattle studied the exposure of
X-rays and fission products on fish
and fish eggs.^^
Investigations at the Metallurgical
Laboratory and Clinton Laboratories
were supported and supplemented by
the large University of Rochester
medical research program. Under di-
rection of Stafford Warren, scientists
at Rochester pursued research in radi-
ology, pharmacology, and instrumen-
tation. The radiology section experi-
mented with exposing animals to
high-voltage X-rays and conducted
beta radiation studies and genetic ex-
periments relative to the effects of ra-
diation on mice and fruit flies. The
pharmacology group tested radioac-
■^^MDH. Bk. 1. \'ol. 7. pp. 5.4-5.8, 5.1:^-5.14,
5.16-5.17, DA.SA; Cirovcs, .\V)j/' // Can lie Told. n. on
p. 421; (^ompton, Aloniu Qtti-sl. p. 177.
416
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
live and potentially toxic chemical
substances. Two groups concentrated
on instrumentation problems, includ-
ing the design of standard meters for
measuring alpha and beta particles
and gamma rays and the development
of film and instrument monitoring
methods and protective devices. To
ascertain under actual operating con-
ditions the validity of measuring in-
struments and protective devices,
Rochester scientists tested them in
the plants at Clinton, Hanford, and
elsewhere in the project. ^^
The Army believed these various
research efforts would furnish all the
data and instrumentation the Los
Alamos Laboratory would need for its
health program. But unique require-
ments of the bomb development pro-
gram forced laboratory groups to
launch separate medical research
projects. In the spring of 1944, for
example, essential monitoring appara-
tus was still not available, so members
of the health and electronics groups
combined their talents to develop the
necessary instruments. Similarly, the
industrial medicine group, faced with
handling large quantities of fission-
able plutonium, were dissatisfied with
the available data on detecting over-
doses, so they established their own
research project, employing scientists
from the health group and the metal-
lurgical and chemistry division. These
ad hoc research activities, born of ne-
cessity, contributed much to the suc-
cess of other health and safety pro-
grams at the laboratory. ^^
i^MDH. Bk. 1, Vol. 7, pp. 5.4, 5.6-5.8. 5.10,
5.15-5.16, 5.20-5.22, DASA; Radiology in World War
II, pp. 852-53 and 862; Groves, \ow' It Can Be Told.
pp. 421-23.
^•'MDH, Bk. 8, Vol. 2, pp. III.39-III.41 and
IX.15-IX.16, DASA.
Industrial Medicine
The major objective of Manhattan's
industrial medicine research program
was to identify and control the indus-
trial hazards associated with the
atomic processes. Effective applica-
tion of the knowledge and techniques
developed from this research was the
responsibility of the District's Indus-
trial Medicine Branch, headed by
Capt. John L. Ferry. To monitor the
project's various industrial hygiene
activities, Ferry organized his staff
from officers drawn from the Corps
of Engineers and the Medical Corps.
Beginning with one specialized
group to monitor the University of
Rochester's industrial medicine re-
search program. Ferry subsequently
formed other groups to oversee the
hazards program in materials pro-
curement at the Madison Square Area
Engineers Office, to deal with special
problems wherever they might arise,
to provide consultation on first aid
and other aspects of operations medi-
cine as needed, and to carry on liai-
son with the programs at the electro-
magnetic and diffusion production
plants. Because of the special exper-
tise of the Metallurgical Laboratory's
health physics research group in deal-
ing with pile process hazards, that
group was given broad authority to
monitor the industrial hygiene pro-
grams at the Clinton Laboratories,
Hanford Engineer Works, and Mon-
santo Chemical Company plant in
Dayton, Ohio. Ferry's branch did not
have responsibility for the Los
Alamos Laboratory's industrial hy-
giene program, which was under the
direction of Washington University
internal medicine specialist Louis H.
HEALIH AND SAFETY
417
Hempelman, for the Army maintained
oversight of the bomb development
program through General (iroves's
Washington headquarters.^^
Because of the shifting and unpre-
dictable character of plant design,
construction, and operational require-
ments, the Industrial Medicine
Branch adopted a broad and flexible
approach to its difficult task of moni-
toring the development of effective
industrial hygiene measures. To as-
certain the precise nature of industrial
hazards, the branch had medical re-
search scientists supplement their lab-
oratory experiments with extensive
observations in the field. The scien-
tists gave medical examinations to
plant employees to determine the po-
tentially dangerous effects of handling
large quantities of uranium and fluo-
rine; they took dust counts in produc-
tion plants to ascertain the amount of
radioactive dust present in the differ-
ent processes; and they detected areas
where exposure to radiation was likely
by having production workers wear
X-ray film badges. ^^
As soon as sufficient information
was in hand, the Industrial Medicine
Branch drew up industrial hygiene
standards and procedures that
'* Memo, Nichols to Warren, sub: Responsibilities
of Med Sec, 10 Aug 43, copv in MDH, Bk. 1, Vol. 7,
App. Al, DASA. See also ibid., pp. 3.51-3.65 and
Apps. (;i2a-(>12e, DAS.A. The organization charts
in the appendices indicate (hat medical personnel
trained and indoctrinated at the Metallurgical Labo-
ratory eventually occupied kev positions in the hv-
giene programs at (".linlon Laboratories, Hanford,
and Monsanto. On the aijpomtment of Hempelman
see ibid., Bk. 8, Xol. 2. III.38-III.39, DASA. and
Ltr, Oppenheimcr to (iroves, 25 Jan 43, Admin
Files, Gen Corresp, 231 2 (Scientists), MDR.
'«MDH, Bk. 1. Vol 7, pp. 3.1-3.3 and 6.1.
DASA; Rndmlo^ in IVotld War II. pp. 868-70; Memo,
Nichols to Warren, sub: Responsibilities of Med Sec,
10 Aug 43, DASA.
became the basis for recommenda-
tions to project contractors, who were
responsible for their implementation.
Ihese recommendations generally
took the form of bulletins or instruc-
tional materials. Typical were bulle-
tins originally prepared by Kellex en-
gineers and Ferry's staff for the firm's
employees. They outlined approved
methods for working with fluorine,
uranium hexafluoride, hydrofluoric
acid, and similar hazardous com-
pounds, and included first aid proce-
dures. The branch eventually gave
these bulletins wide circulation wher-
ever these substances were being em-
ployed. On occasion, when the Los
Alamos health group requested sup-
plemental training data for its educa-
tional program on plutonium-related
hazards, the branch furnished the
technical information. 2°
Through periodic inspections, the
Industrial Medicine Branch main-
tained a check on contractors' compli-
ance with its recommendations. Often
the local area engineer would accom-
pany branch inspectors on their
rounds, exercising his authority to in-
stitute immediate changes when nec-
essary. Frequency and thoroughness
of inspections varied. Where the War
Department had complete financial
responsibility for all costs, as in cost-
plus-fixed-fee contracts, the operating
practices of the contractor — regard-
less of his industrial expertise or lack
thereof — were likely to receive very
close scrutiny. Where the industrial
firm had primary liability, as under
other types of contracts, inspections
20 MDH. Bk. 1. \ol. 7, pp. 3.1-3.3, DASA; Safety
(".ommitlee. Bull SM-2, Safety Committee Regula-
tions for Handling C-126 (Fluorine), Admm Files,
C;en Corresp, 729.31, Ml).
418
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
were more infrequent and less rigor-
ous because of the firm's already
proven record for controlling hazards.
Branch inspection teams rated haz-
ards control primarily upon results
from more or less continuous checks
upon employee health and from mon-
itoring hazardous work areas, com-
paring the collected data with estab-
lished standards.^ ^
Chronologically speaking, among
the District's first industrial hygiene
problems were those in procurement
and processing of uranium ore and in
production of special chemicals
(fluorine, fluorocarbons, and boron)
required to manufacture fissionable
materials. As industrial hygiene meas-
ures, the Industrial Medicine Branch
recommended periodic physical ex-
aminations for workers exposed to
hazardous conditions, use of protec-
tive clothing and masks, and instal-
lation of more effective ventilation
systems. ^^
The principal hazard in the diffu-
sion processes arose from the em-
ployment of highly toxic substances,
including uranium in its oxide and
hexafluoride forms, radium, and sev-
eral fluorocarbons. While their use in
small quantities for pilot plant testing
presented little danger, their employ-
ment in enormously increased
amounts in the production plants
posed much greater hazards. To pro-
2' MDH. Bk. 1, \ol. 7. p. 3.1, DASA; Radioloiry m
World War II. pp. 869-70; Groves, Sow It Can Be
Told, pp. 71-73.
22 MDH. Bk. 1, Vol. 7, pp. 3.3-3.16, DA.SA;
.Safety Committee. Bull SM-2, Rev 2, MDR; Memo.
Nichols to Brig (ien Thomas V. Parreil (Groves's
Dep), sub: Shipment Scty, 20 Jun 45, Admin Piles,
Gen Corresp, 319.1 (Insp of Facilities at Rochester,
N.V.), MDR; First Annual Rpt, Murray Hill Area
Engrs Office, sub: Proj S-37, 30 Jun 44, p. 19,
OROO.
tect diffusion workers from these haz-
ards, such as burns, lung irritation, or
even kidney failure, the Industrial
Medicine Branch collaborated with
construction and operating contrac-
tors to install closed ventilation sys-
tems and to develop special handling
techniques. The Carbide and Carbon
Chemicals Corporation, for example,
had its gaseous diffusion plant work-
ers use protective clothing and Army-
type gas masks when they repaired
the hundreds of pumps that were
cooled and lubricated with toxic
fluorinated hydrocarbons. Similarly,
the Fercleve Corporation had its ther-
mal diffusion plant workers apply dry
ice to solidify the highly volatile ura-
nium hexafluoride gas before trans-
ferring it in or out of the system. ^^
The considerable hazards present
in the research and development
phases of the electromagnetic process
were magnified during the production
phase, thus proportionately increasing
the control problem. Ironically, the
most serious hazard, phosgene gas,
was a deadly by-product of the most
effective method of preparing charge
materials for the production race-
tracks; other hazards included toxic
dusts, radiation, carbon dusts, and
toxic chemicals (principally carbon
tetrachloride and trichloroethylene),
and the use of high-voltage sources of
electricity to operate the racetrack cal-
utrons. As the operating contractor,
the Tennessee Eastman Corporation
collaborated with the District's Indus-
trial Medicine Branch to institute a
hazards control program. Protective
measures developed included devices
23 MDH, Bk. 1, Vol. 7, pp. 3.19-3.27, and Bk. 2,
\'ol. 1, "General Features," p. 6.2, DASA; Radiology
w World War II. pp. 836 and 859.
HEALIH AND SAFE IT
419
lor detecting phosgene gas and moni-
toring dust concentration and toxic
chemicals, as well as the requirement
for physical examination ol employ-
ees— particularly those who would have
an above-average exposure to radia-
tion emanations, uranium compounds,
and other hazardous conditions. ^'^
Of all the processes, hazards in the
pile process were potentially the most
dangerous, for there was little previ-
ous industrial experience on which to
draw to devise adequate protective
measures for atomic workers. Perils
existed in each step of the process. In
preparing uranium metal as fuel for
the pile, there was radioactivity, ura-
nium dust, and employment of highly
acid cleaning substances; in pile oper-
ations, radiation and poisonous radio-
active fission products; and in extrac-
tion and concentration of the end
products, radioactive uranium slugs
and very poisonous plutonium. To
counter these hazards, project scien-
tists and technicians worked with the
Industrial Medicine Branch to devel-
op a variety of control measures.
One of the most effective measures
was the heavy shielding built into the
production piles. Others included ra-
diation-monitoring instruments with
automatic alarms, which were placed
in all exposed areas; periodic finger-
printing and physical examinations
for workers; portable detection equip-
ment, such as pocket ionization
meters, film badges, and ring-type
film meters; and protective clothing.
respirators, and goggles. In those
plant areas known to have radioactive
beta or gamma emissions above the
established tolerance level of 0.1
roentgen per 24-hour day,^^ plant
health teams maintained a constant
check of clothing and equipment for
contamination. And in those situa-
tions where every possible protective
measure still did not prevent expo-
sure above the tolerance level, em-
ployees rotated in and out of the dan-
gerous zones. ^^
Of the dangers facing employees at
Los Alamos in bomb development
operations, including exposure to ra-
diation, work with high-voltage cur-
rent, testing with high explosives, and
handling of toxic materials and vola-
tile gases, the single most serious
hazard was work with fissionable plu-
tonium. When the first shipments of
plutonium began arriving in the
spring of 1944, the Los Alamos
health group exploited resources
within the laboratory's own organiza-
tion and formed special committees
24 MDH. Bk. 5, \'ol. 2, "Research," pp. 4. 2-4. .'5
and 4.10-4.11. and Bk. 1. Vol. 7, pp. 3.31-3.35,
DASA: Radiolo^-y in llorlfl War II. pp. H55-56; Qiies-
tions and .An.swers Taken Prom Senate Atomic
Energy Manual, ca. late 194.5, Admin Files, Gen
Corresp, 032.1 (l.egislalion). MDR.
25 In May 1943, the Metallurgical Laboratory
adopted the National Bureau of Standards radiation
tolerance dose of 0.1 roentgen per 24-hour day.
This was only one-half of the so-called international
tolerance dose, established in 1934 by an interna-
tional agreement, and it remained the standard for
the atomic program until the end of the war. See
Radiology in World War II. p. 853; Memos, Stone to
Compton, 10 Apr and 15 Mav 43, Admin Files, Gen
Corresp, 600.12 (Projs and Prgms), MDR.
26 MDH, Bk. 1, Vol. 7, pp. 3.43-3. ,50. DASA;
Memos, Roger Williams ( TNX Div chief, Du Pont)
to Groves et al., sub: Radioactivity Health Hazards
at Hanford, 26 jun 44, and Warren to Nichols, sub:
Radiation Hazaids, 1 Sep 44, Admin Files, (ien Gor-
resp, 700 (Med Rpts. Health Prgm, etc.), MDR; Rpt,
Gantril and Parker, sub: Status of Health and Pro-
tection at HFW, 24 Aug 45, .Admin Files, (len Cor-
resp, 729.31 (Safety Prgm), MDR; Qiiestions and
Answers Taken From Senate Atomic Fnergy
Manual, MDR; Groves, \ou> It Can Be Told. pp. 422-
23.
420
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
to devise and enforce the necessary
controls for handling plutonium.
While the committees concentrated
on developing monitoring, decon-
tamination, and other technical con-
trols, the health group compiled and
circulated appropriate health stand-
ards; established requirements for
pre-employment and job-termination
physical examinations; instituted tests
for detecting overexposure of work-
ers; improved the statistical records it
maintained on individual employees;
and carried out an educational pro-
gram to instruct workers in the par-
ticular problems of plutonium. These
efforts notwithstanding, laboratory
operations with plutonium were
plagued with a series of accidents. ^"^
Clinical Medicine Services
The primary objective of Manhat-
tan's clinical medicine services pro-
gram was to provide the thousands of
project workers living on the closed
and isolated atomic reservations with
"MDH, Bk. 8, Vol. 2, pp. III.39-III.42 and
IX.15-IX.18, DASA. For a list of major hazards at
Los Alamos see Ltr, Oppenheimer to Robert M. Un-
derbill (Board of Regents Secy, Univ of CaliO.
15 Jan 44, Admin Files, Gen Corresp, 600.12 (Y-
12), MDR. Tbe shortage of certain types of safety
equipment, the general lack of knowledge about
plutonium, the rapid expansion of personnel and
operations, and insufficient control over many tech-
nical procedures directly contributed to a series of
accidents at Los Alamos, culminating in early 1945
in acute radiation exposure of four technical work-
ers and the death of another during experimenta-
tion on critical assembly of fissionable material for
the bomb. For a description of an accident during a
bomb assembly test at Los Alamos see Ltr, Rudolph
E. Peierls to James Chadwick, 7 Jun 45, Admin
Files, Gen Corresp, 201 (Chadwick), MDR. On a
subsequent accident in 1946, resulting in the death
of Louis Slotin, an atomic scientist, see Robert
Jungk, Bnghter Than a Thousand Suns: A Personal Ilisto-
rs of the Atomic Scientists, trans, by James Cleugh (New
York: Harcourt, Brace and Co., 1958), pp. 193-94
and 228-29.
comprehensive on-site medical facili-
ties. Providing full medical services,
the Army felt, would enhance not
only manpower recruitment but also
work force retention. Another impor-
tant benefit would be increased
project security, for attending to the
resident employees' personal medical
needs on the reservation would obvi-
ate their having to seek treatment in
the surrounding communities where
services were often inadequate and
limited. Accordingly, overseeing the
establishment and operation of ade-
quate on-site medical facilities — first
aid stations, field dispensaries, outpa-
tient and dental clinics, and full-
service hospitals — became an impor-
tant feature of the District's medical
activities.
Unlike the medical research and in-
dustrial medicine programs, the clini-
cal medicine program at each of the
major atomic sites functioned with a
minimum of external supervision. At
Clinton, the Medical Section's Clinical
Medicine Services Branch, headed by
Lt. Col. Charles E. Rea, administered
medical facilities provided by con-
struction and operating contractors
and the District. At Hanford, Du Pont
established and monitored its own
clinical medicine program, with the
Medical Section exercising only a
general supervisory role through a
small liaison unit in the area engi-
neer's office. And at Los Alamos, the
post surgeon, Capt. James F. Nolan, a
specialist in radiology and obstetrics
and gynecology, administered the
community medical services program
under supervision of the post com-
mander, who reported any medical
problems directly to General Groves.
The Manhattan commander, in turn.
HEALIH AND SAFE IT
421
Hazakdois Materials Storage Area at Los Alamos. Technicians are removing
lead-lined container.
consulted with Colonel Warren, who,
in addition to being the Medical
Section chief, also served as Groves's
personal adviser on medical
matters. 2®
Planning for the medical resources
of the Oak Ridge community began in
the spring of 1943, when Professor
Warren and his University of Roches-
ter staff developed a broadly con-
ceived clinical medicine program.
I hey recommended that the residents
of Oak Ridge have access to a full
range of medical services, to include
28MDH, Bk. 1, \()I. 7. pp. 4.1-4.;^. 4.'J:i-4.27.
App. CI 2. D.ASA: (;r()\fs. Xow ll Can /if lold. pp.
423-24; Ltr, Ciiovt-s lo CIC. ASF, sub: Ml) Mid
Facilities, 21 Sep 43. MDR. On the appoinliiuiit of
Nolan see MDH, Bk. 8. \ol. 1. p. 0.43. D.VSA, and
R(idinloi>r, in IVorM Uai II. p. 879.
surgery, medicine, pediatrics, obstet-
rics and gynecology, eye, ear, nose,
and throat, psychiatry, proctology,
neurology, urology, orthopedics, and
dermatology. They also suggested the
need for supporting X-ray and labora-
tory facilities.
Responding to these recommenda-
tions. District medical officials, work-
ing closely with both construction and
operating contractors, took steps to
provide for adequate medical facilities
in the town of Oak Ridge. For work-
ers requiring hospitalization they ini-
tially had planned to use off-site hos-
pitals, but a survey of the surround-
ing communities, including Knoxville,
revealed that the number of hospital
beds available was well below the na-
422
MANHATTAN: THE ARMY AND IHE ATOMIC BOMB
tional average of 3.4 per thousand
population. Because of the survey
findings, the Medical Section decided
to build a hospital in Oak Ridge that
was substantially larger than required
by the national average. A confluence
of other factors also had entered into
this decision. Of particular concern
was the fact that more than an aver-
age number of workers were likely to
require hospitalization in cases of se-
rious illness or contagious disease,
because they resided in dormitory-
style dwellings or were members of
families where everyone was em-
ployed. Compounding this concern
was the consensus that there would
not be enough physicians available to
make home visits. ^^
Construction began on a fifty-bed
hospital, as well as a medical service
building, in late 1943. But before
either was ready for service, rapid
population expansion had made both
inadequate. With population figures
revised from as many as ten thousand
to fifty thousand in early 1944, the
Medical Section authorized two addi-
tional wings, each with one hundred
beds, and a fully equipped outpatient
clinic. Again, however, community
growth outstripped estimates, reach-
ing seventy-two thousand in early
1945, and made necessary an addi-
tional sixty-bed wing. Even with the
completion of this latter unit the hos-
pital resources of the community were
greatly strained in the spring of 1945,
when there was an epidemic of severe
upper respiratory infections among
Oak Ridge residents. ^°
The pool of doctors, nurses, den-
tists, and other specialists to staff the
Oak Ridge medical facilities bur-
geoned with the mushrooming popu-
lation. To maintain the national war-
time ratio of 1 physician to each
1,500 persons, the Clinical Medicine
Services Branch procured Army Medi-
cal Corps personnel from the OSG
and some civilians. From 8 doctors
and 4 nurses in July 1943, the staff
was increased to 25 doctors and 72
nurses in July 1944 and to 52 doctors
and 144 nurses a year later, with anal-
ogous increases in outpatient treat-
ments totaling 1,890 in Julv 1943,
10,403 a year later, and 19,599 in July
1945. Similarly, the branch enlarged
the dental staff at Oak Ridge. From 2
dentists and 1 assistant in September
1943, the staff was increased to 29
full-time dentists and 23 assistants by
March 1945. Most of the dentists
were civilians, because their work did
not require them to have access to
classified information.^^
The Oak Ridge clinical medicine
services program also provided for
the public health needs of the com-
munity. In the early months of com-
munity development. Army veterinar-
ians cared for government-owned ani-
mals of various kinds — horses, sentry
dogs, test animals — in use on the res-
ervation and assisted community offi-
cials in meat and milk inspections.
"MDH. Bk. 1, Vol. 7, pp. 4.1-4.4 and 4.13-4.14,
DASA.
="'Ibid., pp. 4.1-4.7, and Vol. 12, "Clinton Kngi-
neer Works," pp. 10.1-10.4 and 10.9-10.10, DASA;
Completion Rpt, Skidmore, Owings and Merrill (ar-
chitect-engineer), sub: Portion of Townsile Planning
of Oak Ridge, Contract W-7401-eng-69, 9 Sep 44,
pp. V.IO, V.25-V.28, V.30-V.31, OROO; Robinson,
Oak Ridge Story, p. 56; Groves, Xoiv It Can Be Told, p.
423.
3>MDH, Bk. 1, Vol. 7, pp. 4.14-4.19, and Vol.
12, pp. 10.5-10.7, DASA; Completion Rpt, Skid-
more, Owings and Merrill, sub: Portion of Townsite
Plannmg of Oak Ridge, 9 Sep 44. p. \.29, OROO;
Croves, Xow It Can Be Told. p. 424; Radiology in
World nVir II. p. 874.
HEALIH AND SAFE IT
423
Oak Ridge Hospital {multiwinged structure m foreground)
With the estabhshment of a formal
pubHc health service in January 1944,
they also oversaw rabies inoculation
of pets and maintained the dog
pound and an animal hospital. The
public health service, which func-
tioned very much as did that in a pri-
vate civilian community of compara-
ble size to Oak Ridge, devoted de-
tailed attention to food production
and handling, inspection of water and
sewage facilities, and control of com-
municable diseases. And with films,
newspaper articles, and special
schools, it kept community residents
and plant workers informed concern-
ing the latest developments and most
effective means for maintaining suita-
ble public health conditions. ^^
Two aspects of the Oak Ridge clini-
cal medicine program were unusual
for the times: a psychiatric and social
welfare consultation service, available
to both civilian and military residents;
and a low-cost medical and dental in-
surance plan (the Oak Ridge Health
Association), which was patterned
after the California Physicians Service.
Both contributed significantly to re-
ducing the turnover of trained work-
ers, a persistent problem throughout
the war. Dental coverage subsequent-
ly proved financially unworkable and
was abandoned, but comprehensive
32MDH, Bk. 1. Vol. 7, pp. 4.20-4.23, and Vol.
12, pp. 10.7-10.9, DASA; Radiology in World War II,
424
MANHATl AN: THE ARMY AND THE ATOMIC BOMB
medical care continued as a perma-
nent feature. ^^
The Hanford clinical medicine serv-
ices program was essentially civilian
in character. Du Pont, not the Army,
had primary responsibility for its di-
rection, which was consistent with
Manhattan's larger policy of granting
the company the maximum autonomy
possible with efficient operation. Few
Army personnel were directly in-
volved, and there was no effort to
militarize the civilian medical staff.
Also, as at Clinton and Los Alamos,
the District did not maintain special
medical facilities at Hanford for mili-
tary personnel. Instead, the relatively
small military contingent depended
upon the contractor-administered
services for its medical and dental
needs. ^*
In early 1943, Army leaders had
few precedents for entrusting medical
care of tens of thousands of atomic
workers to a private industrial firm.
From 1943 through 1945, Du Pont
had to cope with problems similar to
those in Tennessee, including a rapid-
ly expanding population, the necessity
for maximum secrecy, and a remote
location. In certain respects, however,
its problems were more difficult be-
cause of the greater isolation of the
site and the much larger proportion
of workers living on it. Nevertheless,
the Hanford clinical medicine pro-
33 MDH, Bk. 1. Vol. 7, pp. 4.7-4.13, and Vol. 12,
pp. 10.5 and 10.8, DASA; Radiology in World War II.
pp. 874-75; Robinson, Oak Ridge Story, p. 56.
34 This and the following paragraphs are based
on MDH, Bk. 1, Vol. 7, pp. 4.23-4.25, 4.28, 4.30-
4.31, 4.37-4.39, and Bk. 4, Vol. 5, "Con.struction,"
App. B66 (Org Chart. Constr Div, HEW), and Vol.
6, "Operation," App. BIO (HEW Org Charts, Con-
tractors), DASA; Ms, Rov C. Hageman, "Hanford:
Threshold of an Era," 1946, pp. 26-27, Admin
Files, Gen Corresp, 461 (Hanford), MDR; Radiology
m World War II. pp. 875-78.
gram — including regular medical serv-
ices, emergency dental care, and
public health — was a success. A close
observer of the program, the director
of health of the state of Washington,
commented in 1944 that he knew of
"no industry in this state doing a
more adequate and as thorough a job
as is being done at the Hanford Engi-
neer Works." ^^
Residents of Los Alamos, as did
residents of Manhattan's other atomic
reservations, had access to complete
medical services. Provision of these
services was perhaps even more es-
sential at the bomb laboratory than at
Clinton and Hanford. The location of
the New Mexico site was more than
50 miles via a tortuous mountain road
to the nearest hospital. The highly
secret nature of the work made it im-
perative, from the security standpoint,
that all travel away from the post — in-
cluding that for medical purposes — be
limited to an absolute minimum. A
final factor, and one of central impor-
tance, was maintenance of high em-
ployee morale, for so many members
of the scientific and technical staffs
who had to work at a forced-draft
pace would find little opportunity for
relief from the unremitting pressure
of trying to solve extremely difficult
problems. ^^
In the first year of Los Alamos
operations, medical facilities were
extremely limited. For civilian pa-
tients there was only a five-bed in-
dustrial infirmary (eventually, through
3 5 Ltr, Dr. Eee Powers (Wash State Health Dir) to
E. L. Plenninger (HEW Proj Supt), 25 Sep 44,
Admin Files, Gen Corresp, 700 (Diseases, Cancer
Research), MDR.
3«MDH, Bk. 8, Vol. 1, pp. 2.4-2.6, and Vol. 2, pp.
in.l2-III.13, DASA; Groves, \ow It Can Be Told. pp.
l(i4-66.
HKALIH AND SAFE IV
425
severe overcrowding, it accommodated
ivventy-four bed cases), staffed by two
physicians and three civiHan nurses.
For mihtary personnel (he Armv pro-
vided a separate three-bed infirmary,
staffed by a Medical C.orps officer and
seven enlisted men. With the Army's
Bruns General Hospital in Santa Fe
available for civilian residents requir-
ing lengthy hospitalization or special
treatment, these modest facilities suf-
ficed as long as the population of the
site remained relatively small. De-
pendence upon Bruns Hospital, how-
ever, presented some serious draw-
backs. The time-consuming trip to
Santa Fe resulted in a loss of man-
hours, which the project could ill
afford. There also was the inherent
risk to security in having personnel
leave the reservation, even though the
trips were carried out under military
supervision.
A reassessment of the post's limited
medical facilities occurred in late
1943 in order to meet the increased
health needs of a rapidly expanding
population, which had not only more
than doubled in size but also had
changed in composition. Beginning in
January with only fifteen hundred
construction workers, the population
by the end of the year had expanded
to over thirty-five hundred and now-
included scientists, technicians, Uni-
versity of California and civil service
employees, military personnel, and
dependents. Providing them with
proper medical care was essential, es-
pecially for the larger proportion of
individuals who were likely to require
hospitalization. Several factors occa-
sioned this situation: An increasing
number of workers had been rejected
for military service for medical rea-
sons; a higher percentage of young
married couples were likely to need
obstetrical services and medical care
for small children; and a sizable ele-
ment of the civilian population lived
in barracks or dormitories. Hence,
Captain Nolan recommended to Lt.
Col. Whitney Ashbridge, commanding
officer of the post, that the industrial
infirmary be expanded into a 60-bed
hospital, to include a 30-bed conva-
lescent ward for use by both civilian
and military patients. Nolan did not
get all that he requested, but with
Colonel Warren's support he secured
authorization for expansion of the in-
firmary into a 54-bed unit. Because
civilian medical personnel were virtu-
ally unobtainable by mid- 1944, most
of the additional staff had to come
from the Army Medical Corps. ^'
By late 1944, the New Mexico com-
munity had reasonably complete clini-
cal medicine facilities. Most services
were available to permanent residents
at little or no cost, the only excep-
tions being that civilian in-patients at
the hospital paid a subsistence fee of
$1 a day and construction contractors
paid at established rates for emergen-
cy treatment of their personnel. Until
early 1944, periodic visits by dentists
from Bruns General Hospital provid-
ed the only on-site dental care, but in
March a full-time dentist became
available at the Los Alamos hospital.
Veterinary services had come much
earlier, when the military police de-
tachment at the post brought in a
"MDH. Bk. 8, Vol. 1, pp. 6.43-6.47 and 7.15,
DASA. Memo, Warren to Groves, sub: Hospital Re-
quirements at "\\" 22 Jun 44; Memo. Warren to
Groves, sub: Insp of Med Facilities at "Y" (24-28
Oct 44), 16 Nov 44; Memo, Nolan to Ashbridge,
sub: Med Facilities and Activities in the Year 1943-
44, 9 Jun 44. All in Admin Files, Gen Corresp,
319.1 (Hospital). MDR.
426
MANHATTAN: THE ARMY AND THE A lOMIC BOMB
medical officer in April 1943 to look
after the horses and war dogs used on
security patrols. Under direction of
Captain Nolan, the post veterinarian
and his staff cooperated with the clin-
ical medicine staff to establish and
maintain public health services for the
community.^*
As a major factor in maintaining
community morale, the clinical medi-
cine services program was perhaps
more significant at Los Alamos than
at any of the other atomic sites. This
was particularly the case during the
hectic months of bomb development
and testing in late 1944 and early
1945. In this period, the strain of
working long hours on extremely dif-
ficult technical problems in the face
of pressing deadlines combined with
the stress of other factors — geograph-
ic isolation of the site, limited recre-
ational opportunities, strict security
requirements including censorship of
mail, and not always adequate living
conditions — to place a severe burden
on both individual and community
morale.
In August 1944, Colonel Warren
sent a psychiatrist to the New Mexico
site to survey the situation. The psy-
chiatrist found that "dissatisfactions
were expressed by every category of
resident interviewed." He recom-
mended that a psychiatric social
worker would help ease tensions and
remove frictions in the civilian popu-
lation and more intensive efforts by
the post chaplain and the WAC com-
manding officer would improve rela-
tionships among the diverse military
groups. Warren acted promptly to put
these recommendations into effect. In
the follow-up survey made in April
1945, the psychiatrist found commu-
nity morale greatly improved. And in
the final hectic weeks of bomb assem-
bly and testing in the summer of
1945, no key scientists or technicians
were lost to the effort because of ill-
ness or mental breakdown. ^^
The Safety Program
Start of large-scale project con-
struction activities in the spring of
1943 brought the first big upsurge in
safety problems for the Manhattan
District. Anticipating this increase,
Colonel Marshall had transferred the
only safety engineer on his headquar-
ters staff to the Clinton Engineer
Works. Consequently, in early 1943,
he began to look for a replacement,
this time seeking an engineer with the
ability and experience to organize and
direct a project-wide safety program.
Not until June did he find the man he
wanted. James R. Maddy was a veter-
an in the safety field, with broad ex-
perience and an outstanding record
of achievement on other government
projects. Marshall's instructions to his
new safety engineer were to form
from the District's existing safety staff
a separate section with sufficient per-
sonnel and expertise to oversee all
Manhattan safety activities. *°
38MDH, Bk. 8, Vol. 1, pp. 6.47-6.49, DASA;
Groves, Xow It Can Be Told, p. 166.
^^ Quotation from Memo, Dr. Eric Kent (Marke
(consultant to MD) to Warren, sub: Mental Hygiene
Survey at "Y" (23-27 Aug 44), 29 Aug 44. See also
Memo for File, Clarke, sub: Psychiatric Problems in
Community at "Y," 2 May 45. Both in Admin Files,
(ien Corrcsp, 700 (Disease, Cancer Research),
MDR.
*o MDH, Bk. 1, Vol. 11, pp. 6.1-6.6 and App.
C:i5, DASA; Marsden Diary, 2 Jun 43, OROO.
HEALIH AND SAFETY
427
Progra m Orgn niiatwu
Maddy's program organization co-
incided with the move of District
headquarters from New "^'ork to Oak
Ridge. The newlv estabhshed Safety-
Accident Prevention Section (in late
1944 it became a branch) henceforth
became responsible not only for the
project-wide safety program but also
for the Clinton program. At the same
time, however, the policy of granting
Hanford greater administrative auton-
omy relieved the section of all but
very general supervision of its safety
program.*^
By the end of 1943, Maddy had a
staff of fifty full-time employees as-
signed to five subsections (construc-
tion, industrial, training, traffic, and
community safety). In subsequent re-
organizations he consolidated the
construction and industrial units to
form an Occupational Safety Section
and the traffic and community units
to create a Public Safety Section.
Maddy's headquarters section super-
vised the program through resident
safety engineers, one of whom was as-
signed to each field activity where ex-
posure to hazards amounted to at
least eighty thousand man-hours per
month and, beginning in May 1945,
one to the staff of each officer in
charge of a major operating division
at Clinton. The resident engineer was
usually a member of the area engi-
neer's stafl, performing the dual func-
tion of advising the area engineer on
safetv matters and maintaining liaison
between his area and the safetv office
in Oak Ridge. ^2
Maddy managed the District's safety
program with only modest additions
to the personnel of the Safety-Acci-
dent Prevention Section. This he was
able to do by close adherence to Gen-
eral Groves's basic policy of making
maximum use of available assistance
from existing outside organizations
operating in the safety field. Thus,
wherever feasible, he relied upon the
existing safety organizations of the
prime contractors, such as Du Pont
and Kellex, who employed full-time
safety engineers. Similarly, in commu-
nity safety matters he encouraged vol-
untary safety committees, although
these were not always as effective as
relying on professional safety engi-
neers. This was the case in Oak
Ridge, for example, where the col-
laborative efforts of Roane- Anderson
and a volunteer committee for a com-
munity safety program proved less ef-
ficient than the expertise of Maddy's
office.'*^
The safety program also received
indispensable assistance from the
Office of the Chief of Engineers
(OCE). Groves had established an ef-
fective liaison with the OCP7s Safety
and Accident Prevention Division, en-
abling Manhattan safety personnel to
secure materials on standards and re-
quirements, special sttidies, and even
personnel. Similar liaison arrange-
ments with the Department of Labor
and the Bureau of Mines provided a
source of training materials and, from
the Bureau onlv, safetv instructors.
"' MDH. Bk. 1. \ol 11, |)|) ().l-().2. DASA;
Matthias Diarv, 12 and L'4 Sep },S, OROO
"•■^MDH. Bk. I. \()l II, pi> f).2-<i,."i and Apps.
Af)-A9 (Or^ Chans. MI) .Salt-tv Or^. 1943-45),
DA.SA
"■' Ihul., pp. (1.2-()..S and (>. 7-0.8. DA.SA.
428
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Also many nongovernmental organi-
zations— most notably the National
Safety Council, American Red Cross,
and International Association of
Chiefs of Police — supplied technical
data and special training. With this
extensive outside assistance. District
safety employees could devote most
of their time to solving urgent current
problems.*'*
Occupational and Community Aspects
At the Tennessee and Washington
sites, separate staffs administered oc-
cupational safety for the worker on
the job and community safety for resi-
dents of the atomic communities. In
each production plant at Clinton, a
resident engineer coordinated safety
measures with the appropriate con-
struction and operating contractors.
At Hanford, Du Font's own safety de-
partment, assisted by a central safety
committee comprised of all depart-
ment heads and with advice from the
area engineer's safety office, adminis-
tered occupational safety. Community
safety at Oak Ridge was the responsi-
bility of a full-time safety director
functioning under supervision of the
resident engineer for the central fa-
cilities and at Richland, of the area
engineer's safety office. At the New
Mexico site, where the production or-
ganization and community were much
more closely integrated, a safety com-
mittee oversaw both occupational and
community safety until early 1945.
That year the Los Alamos administra-
tive board employed a full-time pro-
fessional safety director, who later
divided safety activities between a com-
munity program and a technical area
program.*^
Manhattan's occupational safety
program came to resemble that found
in many large-scale wartime industrial
enterprises. The District safety staff
promulgated a great variety of regula-
tions intended to minimize job-relat-
ed injuries and illnesses. These re-
quired contractors to provide workers
with safe drinking water, goggles,
hard hats, safety shoes, and similar
items; to submit monthly reports on
all accidents; and to incorporate thou-
sands of safety features in plant build-
ings and equipment. Compliance with
established safety codes and stand-
ards was verified through on-the-spot
inspections. To support the efforts of
resident safety engineers and contrac-
tors, the safety staff developed a pro-
gram of safety indoctrination for all
employees, provided materials for
special courses, issued safety rule
books, and carried out a continuing
program to publicize safety matters in
community and plant newspapers, in
films shown in local theaters, and in
widely displayed posters.*^
On the whole, the community
safety program was more convention-
al. Oak Ridge, Richland, and Los
4-* Ibid., pp. 6.9-6.10, DASA; Rpt, Natl Safety
Council, sula: Community Safety Prgm, Oct 43 (for
CEW) and Nov 43 (for HEW), with supplementary
reports made at each site in 1944, OROO.
45MDH, Bk. 1, Vol. 11, pp. 6.4-6.5 and Apps.
A6-A9; Bk. 4, Vol. 5, Sec. 10, and Vol. 6, Sec. 7;
and Bk. 8, Vol. 1, p. 6.63, and Vol. 2, III. 38 and
IX. 19, DASA. Most other Manhattan installations
having more than eighty thousand man-hours of ex-
posure to hazards per month had a full-time safety
engineer. The exceptions were Boston, where Stone
and Webster's work was not sufficiently hazardous
to require special safety measures, and Berkeley,
where the University of California accepted com-
plete responsibilitv for safetv matters.
46 Ibid., Bk. 1, Vol. 11, pp. 2.1-2.11 and Apps.
Cll and H4 (Safety Progress Rpts), Fl and F4
(Safety Tng Bulls), F6 (Safety Films), DASA.
HEALIH AM) SAFETY
429
Alamos required essentially the same
provisions for the safety of their resi-
dents as most normal American towns
of comparable size and population,
but with certain significant differ-
ences. One was their unusually great
dependence upon automobile trans-
portation, creating special traffic
problems. Another was security,
making it necessary for the military to
perform certain safety functions usu-
ally assigned to civilian agencies, as,
for example, fire safety and the en-
forcement of traffic regulations. On
the other hand, the programs for
safety in public places (theaters,
recreation centers, playgrounds), in
schools, and in the home were not
unlike those in effect in most Ameri-
can communities.
District traffic engineers carefully
studied various statistical reports on
road congestion and accidents and
devised corrective measures, includ-
ing institution of such advanced con-
cepts as radio control of traffic fiow,
unbalanced lanes for inbound and
outbound rush-hour traffic, and inge-
nious layouts to expedite turns. They
also drew up traffic regulations based
on the Uniform \'ehicle Code in force
in many states, and therefore familiar
to most of the residents in the atomic
communities, and distributed copies
of these regulations widely among
District drivers.*^
As a check on the public safety
standards and as an additional source
of professional expertise, the Army
requested National Safety Council ex-
perts on home, school, and traffic
safety to make periodic surveys. After
each survey the council issued recom-
mendations, most of which the district
adopted. Thus, in early 1944, Maddy
reported to the district engineer that
of the sixty-nine recommendations
the council had made in a survey of
Oak Ridge, the District had adopted
thirty-two and was in the process of
adopting twenty-one others, more
than a third of them relating to traffic
problems.
A continuing problem for the Dis-
trict safety staff was how to maintain a
high level of adherence to project
safety regulations. Among the factors
that tended to reduce attention to
safety requirements below an opti-
mum level were inadequate knowl-
edge of current regulations or a gen-
eral decline in morale, which oc-
curred among atomic workers in 1944
and early 1945. One effective means
was to hold a safety exposition, pre-
senting a combination of entertain-
ment and exhibits designed to build
up morale and at the same time teach
safety measures. In the hectic last
months of the war, thousands of
project employees at Clinton and
Hanford viewed highly successful
safety expositions on industrial, off-
the-job, and home safety.*^
A precise assessment of the Man-
hattan District's relative success in its
public safety program is difficult be-
cause of a lack of detailed statistical
■*Mbid.. Bk. 1. \()l. 11. pp. .S.l-:5.7 and Apps.
(-.12 ( riafFic Regs lor CKW) and I):i-n4, and Bk. «.
\<)I. 1. pp. 6.:i:^-6.:i5. DAS.A. in adrinion to nistiui
ifgulati()n.s, government drivers operating in the
atomic communities had to comply with sitki (.or|)s
of Kngineers requirements for vehicle mspcttion,
dn\ci iiaining. and driver records maintenance
^«MnH. Bk. 1. \ol. 11. p. 3.H and Apps. K7-K9
(Photos o( .Safetv Kxhihiis). DA.SA; Memo, (".roves
to OlYnc of the Fiscal Dir. IKl A.SF. Attn: K. F.
Navlor (.Spec Asst). sub: HFVV .Saletv Exposition
(24-29 Jul 44), 24 Sep 43. Admin Files. Gen Cor-
res|). 729.:? 1 (SaletN and Kvaciialion. Hanford),
M1)K
430
MANHA n AN: IHE ARMY AND IHE A lOMIC: BOMB
records. Nevertheless, there is some
evidence that by 1944 the atomic
communities were achieving a public
safety record at least equal to that in
long-established civilian towns of
comparable size. Traffic safety was a
specific case. Workers commuting
from Oak Ridge and Richland to the
atomic plants were abnormally de-
pendent upon motor vehicles driven
unusually long distances over roads
often poorly built and maintained.
Vet their record of traffic safety was
as good as that of war workers in
comparable civilian communities com-
muting under far less hazardous con-
ditions. And in fact during one specif-
ic period in 1944, Oak Ridge drivers
had fewer fatalities per 10,000 vehi-
cles in operation than towns of
similar size in other parts of the
country. ^^
In December 1945, the National
Safety Council presented the Manhat-
tan Project with the Award of Honor
for Distinguished Service to Safety in
recognition of its unusually low inci-
dence of occupational accidents from
January 1943 through June 1945, re-
sulting in 62 fatalities and 3,879 dis-
abling injuries during 548 million
man-hours. This record, statistically
speaking, gave the District an occupa-
tional injury rate 62 percent below
that for equivalent private industry.
\'iewed in another way. District safety
programs, compared with the national
average, could be credited with
having saved 94 lives, prevented
9,200 disabling injuries, and contrib-
uted an additional 814,000 employee-
days-of-work to the project. In some
respects, a more important achieve-
ment was that effectiveness increased
during the thirty-month period, as
demonstrated by the steady decline
of the frequency, fatality, and severity
rates of injury among District
workers. ^°
Insurance Plans
Acqusition of normal insurance
coverage for the atomic project was
virtually impossible. Even if complete
disclosure to a group of insurance
companies had been possible, they
would have been unable to write cov-
erage because of the lack of knowl-
edge and understanding of the haz-
ards involved, the extent and duration
of the effects these hazards might
cause, and the ramifications of any
large-scale nuclear-related accident
that might occur. Consequently,
where normal insurance was not pos-
sible, the government had to assume
full responsibility for any claims that
might result.
Consistent with provisions relating
to insurance in the First War Powers
Act of 1941 and to procurement of
coverages in War Department Regula-
tion 4, Manhattan developed an insur-
ance plan to protect the interests of
the government and project contrac-
tors and employees. The number of
insurance carriers was limited deliber-
ately to prevent knowledge of the
^niDH, Bk 1. \ol. 11, pp. 5.7-5.8 and Apps. B2
( Ira f Fit Sui\e\ al lenn. Site) and VA2 (Traffic Regs
for CKW), DASA.
^"Ltr, Ned H. Dearborn (Natl Safety Council
president) to (.roves, 18 Sep 45, Admin Piles, C.en
Corresp, 200.6 (Natl Safety Award), MDR; Rpt,
C.antril and Parker, sub: Status of Health and Pro-
tection at HKW, 24 Aug 45, MDR. See also MDH,
Bk. 1. Vol. 11, pp. 5.1-5.(3 and Apps. A2-A5
(graphs showing occupational injurv rates (or MD)
and B3 (tables showing occupational injurv experi-
ence for MD), DASA.
HP.ALIU AM) SAFKIY
431
project from becoming loo widely
known in the insurance industry, and
District officials often had to perform
investigations, determine merits of
claims, conduct inspections, and ex-
amine contractors books on behalf of
the insuring companies. I'he District's
Insurance Section, organized in
August 1942, supervised these activi-
ties and helped administer a variety of
insurance rating plans and types of
insurance for project contractors, in-
cluding guaranteed costs, industrial
accident and health, employees bene-
fits, and group insurance. ^^
■■'MDH. Bk. I, \()1. (•). "Insurance Program,
DASA; (Moves, \ow II Can Ki' Told. p. 57.
CHAPTER XXI
The Atomic Communities in
Tennessee
Those mid-twcnticth century Amer-
icans who came by the thousands to
hve in the burgeoning atomic commu-
nities of the Chnton Engineer Works
(CEW) in east lennessee moved into
a region with deep roots in the na-
tion's history. European settlers had
been coming from the eastern sea-
board colonies for two hundred years,
many by way of the much-traveled
trail thiough the Cumberland Gap, to
live in the valleys beneath the heavily
wooded ridges forming the foothills
of the Cumberland Mountains. But
their numbers had remained small,
limited to the few farm families that
the relatively poor soil would support.
Then in the 1930's, the arrival of the
Tennessee Valley Authority (TVA)
presaged the establishment of the
"Government village" that in the next
decade would tremendously alter the
quiet rural countryside.^ Indeed, as
the Manhattan Project got under way
in earlv 1943, the sudden influx of
' Manhattan and Stone and Webster engineers
regularly used the term (iovniuuent villagi- to desig-
nate the community they envisioned would be built
at the Clinton Kngineer Works as an administrative
headquarters and residence for construction and op-
erating workers. See reference in Marshall Diary,
9 Jun and 24 Jul 42, OCG Files, Cien Corresp,
Groves Files, Misc Recs Sec, behind Fldr 5, \\Y)R
the atomic workers soon created a
unique industrial community along
the south slopes of that prominent
terrain feature known for many years
as Black Oak Ridge. ^
Oak Ridge: The Operating CoiNt/noiity
Of necessity, planning for commu-
nity facilities related directly to the
construction and operation of the
production plants and hence was sub-
ject to frequent revision, usually
toward expansion. Rather than adher-
ing to long-range blueprints, Manhat-
tan was compelled to adopt a policy
of expediency, responding as prompt-
ly as possible to each new major
change in industrial development,
with the hope that it could provide at
all times for at least a minimum of
community requirements. Achieve-
ment of even this minimum goal
often was difficult, because the
Army's general policy gave first prior-
ity to materials, equipment, and man-
2 Robinson, Oak Ridge Stoiy. pp. 32-41; U.S.
.Atomic Energy Commission, AEC Handbook on Oak
Ridge (Oak Ridge, Tenn.: Oak Ridge Operations
Office. 19.58), p. 11.
IHK AlOMIC COMMIMUKS in IKNNKSSKK
433
powcM lor plant ( onstruclion and
operation.^
FnsI Phasr, 1942-1943
Organization and planning for Oak
Ridge began in lale June 1942, after
Stone and Webster had agreed to in-
clude site development and housing
construction in its responsibilities as
architect-engineer-manager of the
atomic project. Meeting with Manhat-
tan leaders on the twenty-ninth, com-
pany officials indicated a special engi-
neering group at their Boston office
would begin design work for the per-
manent operating community imme-
diately. During the weeks that fol-
lowed. Stone and Webster and Army
engineers collaborated closely on pre-
liminary plans for the community.
Using such previously built govern-
ment villages as Ocala, Florida (for
the Florida ship canal project), and
Fastport, Maine (for the Passama-
quoddy project), as a basis, they envi-
sioned an operating village of some
i\\Q thoiLsand inhabitants.
Following a visit to the Tennessee
site, the engineers tentatively decided
that the best location for the village
would be in the northeastern corner
because Tennessee 61, the best high-
way traversing the site, ran northeast-
ward to Clinton and then connected
with good roads to Knoxville, and
also because main lines of the Lou-
isville and Nashville Railroad and
the Southern Railway were nearby.
{See Map 3.) The topography, too, met
their requirements. Fhe stream valley
formed b\ the Fast Fork of Poplar
Creek, a iribularx of the Clinch River,
was relatively flat — if somewhat
narrow — and extended ab(nit 7 miles
southwestward from the northeast
boundary of the reservation. And par-
alleling the valley on the north and
south were Black Oak Ridge and Pine
Ridge, foothills that would provide
the necessary protection for the
future community from possible dis-
astrous explosions at the nearby pro-
duction plants and from unauthorized
observation from outside the reserva-
tion. The gentle slope of Black Oak
Ridge also promised to be suitable
for residential construction.'*
Because the site under construction
was remote and all personnel, for
safety and security, would have to live
in one place, the village would need
numerous housing units and facilities
to provide atomic workers with mini-
mum standards of comfort and ser-
vice. But wartime restrictions on the
amount and cost of any kind of com-
munity construction and the difficulty
in procuring building materials made
it seem unlikely that adequate facili-
ties could be provided. Fhus, both
Brig. Gen. Lucius D. Clay, in his ca-
pacity as the Services of Supply's
deputy chief of staff for requirements
and resources, and Colonel Groves,
who was still serving as the Corps of
Fngineers' deputy chief for Army
construction, took occasion to remind
District officials of these restrictions
3 MDH. Bk. 1, \()l. 12, •Clinton Knginc-t-r
Works, " pp. 1.4-1.5; Bk. 4, \'ol. .5, "Consiruction,"
pp. ,5.1-5.2: and Bk. 8, Vol. 1, "C.cncral," pp, 5,7-
5.8, D.A.S.A. (irovcs, \ou< ll Can Br Told. p. 424.
••Marshall l)iai\, 25 and 29 Jnn. 14 and 24 Jul,
2 and 2:5-24 .Sep 42, MDR; DSM Chronologv," 25
|un 42. .Sec. 2(c). 29 Jun 42, Sec. 15, 24 Jul and 2
Sep 42, each Sec. 9, OROC); Completion Rpt, Stone
and Webster, sub: Clinton Kngr Works, (Contract
VV-74()l-eng-i:i, 194(3, pp. 12-14, OR(K): Groves,
Xoxf It Can Br Told. pp. 25-2('). See V.h. '^ for a more
detailed discussion of the selection of the Tennessee
434
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
and to caution them against overly
elaborate plans for village construc-
tion. Clay told Colonels Marshall and
Nichols that he saw little hope that
there would be any relaxation in
these restrictions for the atomic
project. Groves reaffirmed this view
and made a point of reminding Mar-
shall of the $7,500-dollar cost limita-
tion on individual quarters; he also
told Captain Johnson, the District liai-
son officer in Washington, D.C., that
he thought patterning the atomic
community after Ocala or Eastport
would be a mistake, for these two
towns were built under peacetime
conditions. Nevertheless, when
Groves — as the new officer in charge
of the project — personally inspected
the East Fork Valley section of the
Tennessee site in late September, he
shifted his position to concur with
Marshall's view "that primitive hous-
ing could not be expected to meet
family requirements of the class of
personnel to be employed on this
particular project." ^
General Groves's approval of East
Fork Valley cleared the way for devel-
opment of the atomic community. In
early October, Stone and Webster
construction crews started work on
the first phase. Bulldozers and grad-
ers cleared away existing structures,
grubbed out trees and shrubs from the
slopes of Black Oak Ridge, laid out
rights of way for roads, and provided
for a drainage system. At the same
time. Captain Johnson conferred with
the Corps' Construction Division
housing specialists, seeking data on
designs appropriate for the Tennes-
see site; Colonel Marshall visited the
Ocala village, coming away convinced
that its buildings, "with slight modifi-
cation, would be ideal types for our
village at Clinton"; and Stone and
Webster worked closely with the
Boston Area Engineers Office to com-
plete the general layout plans for the
village.^
Stone and Webster submitted its
general plan for the atomic communi-
ty to the Manhattan area office on
26 October. What had begun as a
projected village of five thousand
people emerged as the blueprint for a
town of some thirteen thousand. Con-
sistent with the Manhattan objective
that townsite construction remain sec-
ondary to plant construction, general
design specifications were based on
utility, on minimizing costs, and on
maximizing use of noncritical materi-
als. Housing and other community fa-
cilities had only to furnish sufficient
accommodations and services so that
the majority of project workers would
live on the reservation. Employees
who did not have to commute daily to
off-site communities would perform
more efficiently in plant construction
and operations and would be much
less of a risk to the security of the
project."^
Under terms of the Army's original
contract. Stone and Webster was re-
sponsible for preparing detailed blue-
prints of not only the atomic commu-
nity but also the large-scale electro-
magnetic plant. By November, howev-
^ Qiiotation from Marshall Diary, 24 Sep 42,
MDR. See also ibid., 30Jun, 24 Jul, 2 Sep 42, MDR,
and DSM Chronology, 30 Jun and 24 Jul 42, each
Sec. 9, and 2 Sep 42, Sec. 25, OROO.
6 Marshall Diary, 7 Oct 42, MDR.
^ MDH, Bk. I, Vol. 12, pp. 2.9, 4.1, 4.4-4.5,
DASA; Marshall Diary, 1 and 17 Oct 42, MDR; DSM
Chronology, 1 and 7 Oct 42, each Sec. 9, and
17 Oct 42, Sec. 16, OROO; Groyes, Xow It Can Be
Told. p. 425.
IHK AIOMK; COMMl NI riKS IN IKNNKSSKE
435
cr, as (lie vast scope of |)lant design
became apparent, Manhattan realized
that Stone and Webster siniplv did
not have enough design personnel to
execute both facets and meet the
project's stiingcnt time limits as well.
So on the twentv-firsi it relieved
Stone and Webster of town design
iunctions, leaving the firm with re-
sponsibilitv for o\erseeing construc-
tion, operating utilities, and maintain-
ing the roads of the town. To replace
Stone and Webster in town design,
Manhattan in early 1943 negotiated
contracts with the John B. Pierce
Foundation of New York, nationally
known for its work on low-cost hous-
ing projects, and with Skidmore,
Owings and Merrill of Chicago, a
leading architectural firm. Fhe two
organizations were to function as a
team, with the Pierce Foundation,
which was primarily a research group,
providing advice and plans on village
housing and with Skidmore, Owings
and Merrill furnishing architect-engi-
neer services.^
Following the engagement of Skid-
more, Owings and Merrill and the
Pierce Foundation, Colonel Marshall
established a new administrative
unit — the 4own Management Divi-
sion— to monitor the work of these
two contractors. Fhis division, howev-
er, was abolished in a major reorgani-
zation of the District in April, at
which time the district engineer de-
cided to se))arate the division's town
* CJoniplriion Rpts, Sione and Webster, siih:
CEVV. ]). 14. and Skidmore. Owings and Merrill,
sub: Poiiion ol lounsitc Planning oi Oak Ridge,
Contract \V-74()l-eng-69, 9 .Sep 44, p. I.l, OROO;
I.ir, Dist F.iigr to .Stone and Webster, sub: Scojje of
Work ai (.K\V, 21 .Nov 42, OROO; DSM Chronolo-
g\. 'i and 2.') Nov 42, each Sec. 2.5, and 9 Dee 42,
Sec. 4. OROO; MDH, Bk. 1, Nol. 12. pp. 2.9 and
4. 5-4. 7. I).\S.A.
planning and management functions.
Two elements replaced the division, a
Central Facilities Planning Unit and a
Central Facilities Operating Division.
Fhe function of the Planning Unit
was to coordinate the design work of
Skidmore, Owings and Merrill with
Stone and Webster constiuction ac-
tivities at the townsite, whereas the
function of the Operating Division
was to provide management continui-
ty to a developing community. Mar-
shall also assigned two officers on his
staff special responsibilities for com-
munity matters — Capt. Samuel S.
Baxter for town planning and 1st Lt.
Paul F. O'Meara for town
management.^
Initial townsite construction was in
the section of Oak Ridge eventually
known as East Fown, completed in
early 1944. Centered on an adminis-
tration building, located just south of
lennessee 61 and about 3 miles
southwest of the Flza entrance to the
Fennessee site, the East Fown com-
munitv comprised more than three
thoirsand familv-type housing units.
Adjacent to the administration build-
ing was a town center of stores, ser-
vice and recreation buildings, a guest-
house, several men's and women's
dormitories, cafeterias, and a hospital.
Overhead electrical and telephone
lines and a sewer and water system
built along main street, paralleling
mi)H, Bk. 1, \()1. 12, pp. 3.5-'^.7. 5.(i-5.9. .Apps.
C.17 (C:hari, Central Facilities Org, Mar 43) and C21
(Chart. MD Org, dated 1 Apr 43 but efleclive
1 Mav), DAS.A; Memo, Blair to Marshall, sub: Pro-
posed Org lor Maim and Opn oi (ien Facilities,
22 Jan 43, and attached organization chart. OROO;
Completion Rpt, I)u Pont, sub: Clinton Kngr Works,
INX Area. Contract VV-74 l2-eng-23, I Apr 44, fol-
lowing p. 17 (("hart, Clinton .Area Kngrs Odice Org,
.11 Mai };i), OROO.
436
MANHATIAN: IHE ARXn AND THE AlOMIC BOMB
Tennessee 61 and the house-lined
residential streets, provided East
Towners with complete public utility
services. ^^
Construction of the East Town sec-
tion of Oak Ridge established the pat-
tern for subsecjuent expansions in the
atomic community at the Tennessee
site. As in virtually every other aspect
of project construction, the primary
emphasis was on speed. This was par-
ticularly true with housing, because
throughout the wartime period there
was never enough of it. The two most
important obstacles to speedy con-
struction were shortages of building
materials and construction workers,
and District and contractor officials
devoted much effort to trying to over-
come these problems. Building plans,
wherever feasible, specified employ-
ment of available substitute materials,
such as the use of fiber or gypsum
board instead of wood for walls and
cement blocks instead of poured con-
crete for foundations. Building de-
signs emphasized standardization and
simplicity of construction. When ex-
perience demonstrated that trailers
and prefabricated hutments, both in
reasonably good supply, would suffice
as homes for most plant workers,
town designers substituted them in
later expansions. With District ap-
proval. Stone and Webster let out
many lump-sum subcontracts for
much of the town construction. Not
only did these subcontractors speed
up construction, they also furnished
'"('.oiiiplction Rpt, Stone and Webster, snb:
CEW, pp. 13-15, OROO; MDH, Bk. 1. \ol. 12, pp.
2.9, 4.2, 4.5, DASA; Robinson, Oak Ridge Stoty. pp.
48-49. F"or the layout of East I own see architectural
maps in Completion Rpt, Skidmore, Owings and
Merrill, sub: Portion of Townsite Planning of Oak
Ridse, pp. 1.8-1.10, OROO, and aerial phcuographs
in Robinson. Oak Ridi^r Slon. following p. 5().
many additional employees who oth-
erwise would not have been available
for the project. ^^
Concurrently with construction of
East Town, Stone and Webster built a
separate self-contained community
designated East \'illage, adjacent to
Tennessee 61 east of the center of
Oak Ridge near the Elza gate. Com-
pleted in late 1943 to house black
workers, this community comprised
fifty permanent family dwellings, four
dormitories, a cafeteria, and a church.
Black workers and their families never
took up residence in East Village be-
cause of a pressing need of more
housing for white employees. Black
families were housed elsewhere in
segregated hutment areas in Oak
Ridge and in the vicinity of the gase-
ous diffusion plant. ^^
Second Phase, 1943-1945
41ie second phase of the Oak Ridge
community development program,
which began in the fall of 1943 and
continued until late summer of 1944,
grew out of Manhattan's need to pro-
vide additional housing and support
services for a much larger population;
the original estimate of thirteen thou-
sand had more than tripled to a new
high of forty-two thousand. Skidmore,
Owings and Merrill again provided
the principal architect-engineer ser-
vices, establishing a field office where
personnel worked with Captain
"MDH. Bk. 1. \ol. 12, pp. 5.2-5.5, llASA; Com-
pielion Rpt. .Stone and Webster, sub: CEW, pp. 30-
44. OROO: I)S.\I Chionologv. 25 Nov 42, Sec. 25,
OROO.
'-Completion Rpt. Skidmore. Owings and Merrill,
sub: Portion of 1 ownsite Plaiuiing of Oak Ridge, p.
II. 1. OROO: .MDH. Bk. 1, \ol. 12, pp. 4.2-4.3^ 7.8-
7.9. 7.20, DASA.
THE ATOMIC COMMUNITIES IN TENNESSEE
437
Oak Ridge Shopping Mall (foregroinid) and District Headq^liarters (background)
Baxter. Stone and Webster oversaw
the construction, most of it contract-
ed out to other building firms, nota-
bly John A. Johnson, Foster and
Creighton, A. Farnell Blair, O'Driscoll
and Grove, and Clinton Home Build-
ing, and to manufacturers of trailers
and prefabricated houses, including
Schult Trailers, Alma Trailers, Na-
tional Homes, Gunnison Housing,
and E. L. Bruce. ^^
To keep pace with the increasing
requirements of the growing commu-
nity of Oak Ridge, the District re-
organized and greatly expanded its
central facilities administration. Effec-
*' Robinson, Oak Ridge Sinn, pp. 48-49; Marsden
Diarv, 13 Sep 43, OROO; MDH, Bk. 1, Vol. 12. pp.
4.2-4.3, 4.6-4.7, 5.2-5.3, 7.10-7.14, App. C5,
DASA; Completion Rpts, Skidmore, Qwings and
Merrill, sub: Portion of Townsite Planning of Oak
Ridge, pp. 1. 1-1.3, and Stone and Webster, sub:
CEW, pp. 14 and 103-2(3, OROO; Dist Engr,
Monthv Rpt on DSM Proj, Sep 43, OCX) Files, Gen
Corresp, MP Files, Fldr 28, Tab A, MDR.
tive 1 November, Colonel Nichols es-
tablished the CEW Central Facilities
Division under the direction of Lt.
Col. Thomas T. Crenshaw. To facili-
tate the construction and operation of
the new community, Crenshaw set up
within the division six specialized
branches: town planning, town man-
agement, recreation and welfare, utili-
ty maintenance, engineering, and cen-
tral facilities construction. The Town
Planning Branch, directed by Captain
Baxter, coordinated the work of the
architect-engineer and construction
contractors and assisted in formulat-
ing plans for new additions to the
community. The Town Management
Branch, headed by Captain O'Meara,
had responsibility for forming an or-
ganization to manage the community;
its five sections dealt with such mat-
ters as liaison with federal agencies,
commercial concessions, public
438
MANHA'l IAN: I HE ARMY AND i HE AlOMIC BOMB
Black Workers at CEW
health, and operation of dormitories
and a guesthouse. The Recreation
and Welfare Branch, under Capt.
Thomas W. Taylor, oversaw the con-
struction and operation of theaters,
playing fields, and other recreational
facilities in Oak Ridge. The Utility
Maintenance Branch, headed by Maj.
Melvin O. Swanson, oversaw the
broader aspects of ensuring the effi-
cient operation of the town's electri-
cal and communications facilities, fhe
Engineering Branch, directed by Maj.
Paul F. Rossell, monitored the public
services required by the community
on a continuing basis; its eight sec-
tions handled transportation, mechan-
ical repairs, water and sewerage, elec-
trical and telephone service, and re-
lated activities. Finallv, the Central
Facilities C>onstruction Branch, under
Capt. Edward J. Bloch, monitored
community development through
seven sections; five oversaw the con-
struction of dwellings and other struc-
tures (stores, schools, and churches),
while two supervised the installation
of utilities and the building of roads. ^^
F'or the second phase of community
development, Skidmore, Owings and
Merrill's original plans called for
9,250 more family units and enough
additional dormitories to house sev-
enty-six hundred persons. Reviewing
this proposal in November, Manhat-
'H)rg Charts, U.S. Engrs Office, Mi:). 1 Nov 43,
15 Feb and 1 Jun 44, Admin Files, Cien C.oiiesp,
020 (MED-Org), MDR; MDH, Bk. 1, Vol. 12, pp.
3.5-.3.7 and .5.6-.5.9, DASA; Dist Engr, Monthly Rpt
on DSM Pro), [ul 44, MDR.
rnK AioMK, (.ommimuks in ikwksskk
439
Ian acccj)tccl llie ligurcs lor dormiioiA
space but decided 6, ()()() family units
would sunice lor construction on
available sites in Kasi Town and P^ast
X'illage and in an undeveloj)ed area
along Tennessee (H, about 2 miles
west of East lown. Only some 4,800
ol the planned 6,000 family units
were built before completion of
second-pfiase construction. I'he new
housing included many piefabricaled
units, based upon a design used suc-
cessfulh by the lA'A, and some de-
mountable types procured from other
government projects in Indiana and
West \'irginia. Both met project re-
cjuirements and were easily remov-
able. 1 he second-phase program also
{produced more than 50 new dormi-
tories, with a total capacity of seventy-
five hundred, and a number of
prefabricated barracks to fiouse the
rapidly increasing military population.
Stone and Webster also supervised
construction of the additional cafete-
rias, shopping centers, schools, laun-
dries, utilities, and other facilities re-
quired for the expanding population
of Oak Ridge. 1^
Third Phase. 1945
By late 1944, employment figures
were again outstripping all earlier es-
timates. On the basis that at least a
part of the increase was temporary
and would decline as production
j)lants were built. District and con-
tractor officials at first agreed to try
to cope with the new demand by max-
imum utili/ation of a\ailable housing.
But further expansion of both the
electromagnetic and diffusion plants
rendered this expedient infeasible. By
early 1945, with new estimates pro-
jecting the ultimate resident popula-
tion of Oak Ridge at sixt\-six thou-
sand, Manhattan had no alternative
but to undertake a third phase of
community development. ^^
This new phase of community ex-
pansion added some 1 ,300 family
units, 20 dormitories, about 750 trail-
ers, as well as the necessary commer-
cial and service facilities. Again em-
phasis was on demountable housing.
Skidmore, Owings and Merrill served
not only as architect-engineer but also
as inspector of completed construc-
tion for the government, replacing
Stone and Webster in this function,
and the CEW Central Facilities
Division directly oversaw third-phase
construction carried out by various
subcontractors. ^ "^
With completion of the third phase
in the summer of 1945, the Clinton
site had community facilities that
more than adequately met the needs
of the resident population in the town
of Oak Ridge (sixty-one thousand)
and in the nearby temporary con-
struction camps (fourteen thotisand).
These facilities included 10,000
family units, 4,000 trailers, 3,000 hut-
ments, 89 dormitories, and a variety
of other types of units in lesser quan-
'■■^Cloniplclion Rpts, Skidinort-, Ouings and Mer-
rill, sub: Portion of I owiisitc Planning of Oak
Ridge, pp. 1. 3-1. 7 and 1.8-1.10 (arehiteei's maps of
Oak Ridge), and .Stone and VVebslei, sub: Cl.W, pp.
i:i-18 and 72-84. OROO; Disi Kngi, Montlilv Rpt
on D.SM Pioj. .Sep and Nov 43. MDR.
'«M1)H, lik. 1, \()1. 12, pp. 1.1-1.6 and 4.3-4.4,
D.AS.A; Completion Rpt, Stone and Webster, sub:
(.KW, pp. 1.3- 1.5, OROO; Dist Ilngi, Moniblv Rpt
on DSM l'i<)|. |un 44, MDR; Robinson, Oak Rnlf^r
Slon. J))). 48-49.
'^MDH, lik. 1, \ol. 12, pp. 1.3-1.4, 4.3-4.4, .').l-
.5.3, D.AS.A; Croves, .\mr It Can lie Told. p. 42.5; MPC
Min, 22-23 Ian 44, OCO Files, (.en Corrcsp. MP
Files, Fldr 23, lab A. MDR.
440
MANHATIAN: IHE ARMY AND IHK A lOMK, BOMB
Prefabricated Houses (Joreground) and Apartment Dwellings {center) at CEW
titles. Total cost of the three-phase
community development program was
more than $100 million, over half for
housing and the rest for support
facilities. ^^
The Construction Camps
Manhattan made other provisions
to accommodate its plant construction
workers, because the major portion of
the permanent housing facilities being
built was intended for plant-operating
'^MDH, Bk. \, Vol. 12, pp. 1..S-1.4, 5.3-5.(").
Apps. CI (Chart,' CEW Population), C3b, and C4,
and Bk. 2, Vol. 4, "Con.struction," pp. 3.61-3.62,
DASA; Robinson, Oal< Ridge Stnn\ p. 49. For a de-
tailed account of the proxision of comniunitv .serv-
ices see MDH, Bk. 1, Vol. 12, Sees. 8-17 and Apps.
B6-B11 and B13-B14, DASA.
personnel. As the construction work-
ers would have only a temporary con-
nection with the project, the Army
initially planned for them to live off
the atomic reservation and to com-
mute to their jobs. But both District
officials and construction contractors
recognized early that the local econo-
my, already strained with an influx of
workers for other nearby war plants,
would not be able to absorb the new
wave of Manhattan workers. Further-
more, the deplorable condition of
many local roads, the distance from
the site of towns where housing was
available, and the shortage of ade-
quate transportation made commut-
ing time-consuming and difficult. Ac-
cordingly, most Manhattan contracts
IHK AIOMIC COMMI'MIIKS IN i KNNKSSKK
441
^ ^ ^ ^ %^
Enlisted Men's Barracks at CEW
provided that, where necessary, the
major construction contractors would
furnish temporary housing for their
employees in on-site construction
camps. ^^
Housing in the construction camps
usually consisted of five-man prefabri-
cated hutments (a type used with
great success on other wartime con-
struction projects), house trailers,
and, in a few instances, dormitory-
tvpe structures. Surplus hutments and
trailers were available at locations
near the Tennessee site. Contractors
had only to arrange for transportation
'3 For a dflailc'fl aiialvsis ol the wpc ol i)i()l)lcms a
contractor laccci in |)ro\i(lini; adcxju.ilf Iniiii; latili-
tics for its consiriulion (■m|)lo\ccs al the- rcnncsst'c
site sec Completion Rpi, Dii Font, sub: CV.W . INX
Area. pp. l(i()-7(). OROO.
to the site, where, with the addition
of a few hastily erected buildings to
house essential community services,
they sufficed to meet the minimum
needs of construction workers.
During late 1943 and early 1944,
Stone and Webster and its subcon-
tractors established a number of hut-
ment camps and seven trailer camps
in the vicinity of the Oak Ridge town-
site. Skidmore, Owings and Merrill
helped design the largest of Stone
and Webster's trailer camps in
(lamble Valley, south and west of Oak
Ridge, which had more than four
thousand spaces, with seclions for
both while and black workers. Du
Pont housed some of its construction
emplovees working on the plulonium
442
MANHATTAN: THE ARMY AND IHE AFOMIC BOMB
Gamblk Valley Trailkr Camp at CEW
semivvorks in Stone and Webster hut-
ments and others in an existing
school building, remodeled to serve
as a dormitory.
Contractors established four more
camps for thousands of diffusion
workers at the confluence of Poplar
Creek and the Clinch River, about 15
miles southwest of Oak Ridge. In
June 1943, the J. A. Jones Construc-
tion Company began building hut-
ments in the Happy Valley area, di-
rectly southeast of the gaseous diffu-
sion plant, to house the first of some
fifteen thousand workers. Later trail-
ers, dormitories, and so-called Victorv
Houses supplemented the hutments
and cafeterias; a shopping center and
a school supplied essential community
services. An overflow of diffusion
workers occupied two smaller camps
directly west of Happy Valley. And
when Ford, Bacon, and Davis began
construction on the plant-condition-
ing area in 1944, the contractor built
a separate camp for its workers a
short distance east of the plant site.
After the peak of construction had
passed, population of the camps de-
clined, but they continued to be par-
tially occupied for many months after
the war was over."''
■'OMDFL Bk. 1. \'(.I. 12. pp. 7.7-7.9; Bk. 2. Xol. 4.
pp. 3.()l-.S.(i(i and App. B.S ((kMi La\()Ut ol K-23
Plant, iiuludiiii- K-27), and Bk. 3. Xol. 5, "Con-
simclion." p. ,3..S. DA.SA. Disi Knt>r. Monthlv Rpts
on DSM Pro), Mai-.\Ia\ 4:?. MDR. Conipk-tion Rpts.
.Stone and VVchMii, sub: (.KW. |). 17; Skidnioif,
Ouings and Merrill, sub: Poition ol lownsile Plan-
ning of Oak' Ridge, p. 11.12; l)n Pom, .sub: CKW.
INX Area, p. 160; and M. \\ . Kellogg Co. and
Kellex Corp.. sub: K-2.5 Plant. Contract W-7405-
cng-23. 31 Oct 45, Sec. 1, pp. 31-32 and map of
K-25 area and aerial photograph of labor camps
following p. 40. OROO.
IHE AIOMIC COMMl Ml lES IN IKNNKSSPLE
443
Cofinnuuit\ M(/)ia^r)nni/
Manhattan's conmuinilx manage-
ment program aimed to maintain ade-
cjnate commiinit\ facilities but with a
maximum economy of manpower and
materials and minimum risk to project
security. To attain these objectives,
tfie District's town management staff
instituted and experimented with a
variety of specific measures. For ex-
ample, it turned over to the profes-
sional employees of civilian contrac-
tors the detailed administration of
community operations; it subsidized
dormitory rents and bus fares; and it
secured assistance from existing out-
side civilian organizations, such as the
American Red Cross, the TVA, and
certain governmental agencies of the
state of Tennessee. The test for all
such measures was the extent to
which they contributed to the princi-
pal objective of the Tennessee site:
production of sufficient fissionable
materials in time to fulfill the de-
mands of the bomb development pro-
gram at Los Alamos. ^^
To the casual visitor driving down
Tennessee 61 from the Elza gate in
the spring of 1943, the rapidly grow-
ing clusters of buildings on the slopes
of Black Oak Ridge gave every ap-
pearance of being an already thriving
village of some size. On closer exami-
nation, however, the visitor would
have found that most of the houses
were unfmished, the shopping centers
still under construction, and utilities
not yet operating. For Oak Ridge did
not begin to function as an organized
communitN until the summer of 1943,
when the first families began to move
in and some of the commercial and
service facilities opened their doors
for business. In fact, the town had no
name imtil Marshall's executixe offi-
cer, Lt. Col. Robert C. Blair, re-
(juested employee suggestions. Dis-
trict officials finally chose "Oak
Ridge," appropriate because of the
location and because "its rural conno-
tation held outside curiosity to a
minimum." ^^
With the opening of the first cafete-
ria and dormitories in P^ast Fown in
mid-June, the C^entral Facilities Oper-
ating Division — with Captain Baxter
serving for a time as town manager —
began active management of the com-
munity. But direct administration of
the community by the Army lasted
only a few months. The Army had
never been enthusiastic about having
District military personnel directly in-
volved in the time-consuming day-to-
day administration of Oak Ridge.
Groves and Nichols concluded that
direct military operation of the town
would recjuire not only a large mili-
tary staff but also much of the time
and energy of the district engineer
himself. ^^
The September 1943 decision to
further enlarge the town of Oak
Ridge precipitated a search for a civil-
ian organization to manage it. Stone
and Webster and J. A. Jones were
likely candidates, but a study showed
that those firms had fully committed
most of their available supervisory
personnel to overseeing construction
2'M1)H. Bk. 1, \<.l. 12, \>\). r).l-().2, 7.11-
9.1-9.2. 11.1-11.9, 18.11-1812, I).\.S.\; i.u
Xoiv ll (Mil Br Told. pp. 42,"i-2().
-■^ (Quotation from Robin.son, Oak Hiflire Slory. p.
.50. .Sec also (irove.s, Xo'w It Can Ik Told. pp. 42.0-26;
MDH, Bk. 1. Vol. 12. p. .5.6. DAS.\.
•■^3M1)H. Bk. 1, Vol. 12. p. 5.8 and .\pp. C21.
D.A.SA; Org Chart, I'.S, Kiigr.s Office, MD, 15 Aug
V.\. MDR.
444
MANHATIAN: THE ARMY AND IHE A lOMIC BOMB
Tiiiiiiiir^m««rT»n"'"'^"-''-""' .
ppr-'Timraii • iiHiinii - niiiMi
j^jt^fe^dp*
^w^^'^m
Ml
Oak Ridge Elementary School
of the electromagnetic and diffusion
plants. So Manhattan decided to ap-
proach the Turner Construction
Company of New York. Groves knew
that the company had established a
fine record on other important war
projects, and Nichols recently had
worked closely with Turner officials
in his capacity as area engineer in
charge of construction of the Rome
(New York) Air Depot. ^^^
By mid-month, Manhattan and
Turner representatives reached an
agreement that the company would
establish a wholly owned but com-
pletely separate organization — desig-
nated the Roane-Anderson Company,
after the two Tennessee counties in
2-*MI){I, Bk. 1, \()1. 12, pp. 6.3-6.4, DASA;
(iroves. Sow It Can Be Told, p. 425; Cullum, Bio-
iyraphual Rrfrislh. 9:593; Marshall IDiarv, 18 Jun 42,
MDR.
which the atomic site was located — to
administer the town under a cost-
plus-fixed-fee contract. According to
its provisions, Roane-Anderson would
manage, operate, and maintain the
government-owned facilities and ser-
vices at the Clinton reservation, exclu-
sive of restricted plant areas. For this
service the company was to receive a
fee of $25,000 a month, or slightly
less than 1 percent of $2.8 million —
the estimated total monthly cost of
operating the facilities. The terms of
the final contract were sufficiently
flexible to permit Manhattan to assign
a broad range of facilities and activi-
ties to the company's administration.
Faced with the unexpectedly rapid
growth of Oak Ridge, which brought
an immediate need for a multiplicity
of new community services, District
authorities found a readv and effec-
rHK AlOMK. COMMLMIIKS IN IKNNKSSKK
445
UNITED STATI S POST OFFI
Main Post Office and Theater in Oak Ridge
ti\c solulion in a policy oi "give it to
Roane-Anderson." ^^
Roane-Anderson gradually took
over responsibility for administration
of most community functions from
the Town Management Branch of the
C>EW Central Facilities Division. In
certain respects its role was compara-
ble to that of the municipal adminis-
tration of a civilian community, but
there were also some major differ-
ences. It provided Oak Ridgers with
the usual publicly owned utilities and
also with steam heat and telegraph
service. It paid the policemen, fire-
men, and medical personnel, but the
District retained administrative con-
trol of the police, fire departments,
^■■^ Roanc-AndcTsoii Hist. Coiuiact W-74()l-en!,f-
115, 'M) Nov 51. j)j). 1 and 5 (source of (juoiatioii),
OROO. See also MDH. Bk. 1, Vol. 12, p. (i.4,
DA.S.A. The Roaiie-Aiuleison (ontrarl was fortnalK
signed on 14 Feb 44, effeMive 15 Sep 4,'i.
and hospital. I he company provided
physical maintenance for the schools,
but the District delegated their actual
operation to Anderson County educa-
tional officials. In recreation, Roane-
Anderson had no part at all. Instead,
the District, in July 1943, permitted
organization of a Recreation and Wel-
fare Association, comprised of resi-
dents of the community, to operate
theaters, bowling alleys, athletic
fields, taverns, library services, and a
weekly newspaper. ^^
Where Roane-Anderson's role dif-
fered most greatly from that of an or-
dinary municipality was in its assump-
tion of many of the activities normally
carried out by private enterprise in
American society. 1 hus, the company
managed and maintained virtualh all
^6 R<,;,ne-Anderson Hist, pp. 2.V()2, OROO:
MDH. Hk. 1, \ol. 12, pp. 6.5, 6.7, 9.1, 10.1, 11.2,
DAS A.
44G
MANHA riAN: IHK ARMY AM) 1 HK AIOMIC BOMB
of the real estate of the community —
housing of all kinds, farmlands (some
ot which it actually cultivated), forest-
ed areas, public grounds, and some
fifty-four private cemeteries. It oper-
ated cafeterias (there were twenty at
the period of peak employment in
May 1945), laundry and dry cleaning
establishments, and cold storage and
warehouse facilities. It delivered coal,
fuel oil, and wood to community resi-
dents in winter and ice in summer. A
company concessions department
rented space and granted licenses to
private enteiprise for grocery, drug,
and department stores; clothing, shoe
repair, and barber shops; and ga-
rages, service stations, and other
commercial establishments in the
town centers and neighborhood shop-
ping areas. It operated a transporta-
tion system that included both on-site
and off-site bus service, the 35-mile
CEW Railroad, and the CEW Motor
Pool. 2^
By February 1945, Roane-Anderson
had more than ten thousand employ-
ees, recruited from among people
living both on and off the reservation.
From the start, the Army viewed
direct operation of so many functions
by a single contractor as a temporary
arrangement. Consequently, when
community growth began to level off,
it assisted Roane-Anderson in trans-
ferring many community activities to
more efficient specialized operators.
By granting concessions, letting sub-
contracts, returning certain oper-
ations to District control, and termi-
nating activities, the company re-
duced its direct employment to about
five thousand by August 1945.
Among the major activities gi\en up
by Roane-Anderson were bus oper-
ations (taken over by the American
Industrial I ransit. Inc.), most housing
operations, trash and garbage collec-
tion, and distribution of ice, fuel, oil,
and coal.^^
Ihrough the CEW Central Facili-
ties Division, the Army exercised
close supeivision over Roane-Ander-
son and the various community sub-
contractors and concessionaires. Be-
ginning in the fall of 1943, several
reorganizations of that division were
at least partially designed to realign
its various administrative sections so
that they would refiect the shift from
community construction to operations
and more nearly complement those of
the Roane-Anderson organization.
These organizational changes culmi-
nated finally in November 1944 in es-
tablishment of a Roane-Anderson
Branch within the division, through
administrative service, maintenance,
utilities, transportation, and oper-
ations sections, this branch supervised
counterpart sections, in the compa-
ny's community management organi-
zation. Fhe chief of the branch, Maj.
Henry C Hoberg, shared executive
direction of the community with
Roane-Anderson's project manager,
Clinton N. Hernandez. In addition, a
Central Facilities Advisory Commit-
tee, comprised of representatives of
all the major contractors (including
Roane-Anderson), assisted the divi-
sion chief in coordinating community
operations. ^^
Roane-Anderson Hist, pp. 2:Mi2, OROO.
28 Ibid., pp. A-5. 22-(kS, ,App. F (Cn-aphic Ret of
Roane-.Anderson), OROO: .MDH, Bk. 1, \ol. 12, p.
1.5, D.AS.A.
29 Org Charts, I'.S. Kngrs Ollke, MI), Nov 43
THE ATOMIC COMMIM IIKS IN TENNESSEE
447
I
rARY ARI
iltlDOtASSeS-llfltWM i
f:: RAMO TftMSMITTERS {
'HOHiBITEO <
: ■Ci.ESiWkSStlWCRS !
J&JECr TO SSAKH j
^r
CEW Rp:ser\ ATioN Entry Point
Limited reorganizations in 1945 did
not change the basic relationship be-
tween the CEW Central Facilities Di-
vision and Roane-Anderson. In Janu-
ary, the district engineer transferred
some of this staffs functions — safety,
special services (chiefly recreational
activities), and public relations — to Lt.
Col. John S. Hodgson, who had suc-
ceeded Colonel Crenshaw as division
chief in May 1944, and, at the same
time, changed Hodgson's tide to ex-
ecutive assistant (to the district engi-
neer) for operations. Roane- Anderson
also made some changes in its organi-
zation to adjust to its divestiture of
certain major activities. ^°
and 15 I-cb, 1 jun. 2.S Au^. 10 Nov 44, MDR;
Roane- Anderson Hisi. Apps. KI-K4 (Org C-hans.
20 Apr. 1 Sep. and 1 Nov 44), OROO: MI)H, lik. 1.
\ol. 12. p. .3.8 and App. C]H iCharl. (eniral Fadli-
iRsOrg, Mar 44). DA.SA.
•'"Org Chart. U.S. Kngrs Ollue. Ml), 20 |an A^i.
MDR; Roane-Anderson lliM, .\\)\>. V.n (Ori; (.lian.
Ihe average civilian resident of
Oak Ridge had most of the essential
community facilities and services that
would have been available in other
comparable wartime communities.
What he chiefly lost as long as he re-
sided on the Clinton reservation were
some of his civic rights. The War De-
partment had declared the Tennessee
site a closed militarv reservation ef-
fective 1 April 1943, with strict con-
trol of entry, guards at the gates,
fences at strategic points, and mount-
ed patrolmen regularly checking un-
fenced sections of its boundaries. The
Armv did not permit residents to
establish and participate in normal
municipal and township governments,
although it did allow them to form
certain social welfare organizations.^^
() Feb 4.-)), OROO: MDH. lik. 1. \ol. 12. App, C.\9
(Chan. Central Faeiliiies Org, .Mar 43). D.A.SA,
■" MDH, Hk. 1. \ol. 12, pp. l.."i-l.r), D.A.SA, .Sec
also WD Cir ,57, 20 Feb l.'V See. .'i.
448
MANHATTAN: THE ARMY AND I HE A lOMIC BOMB
mr K
.
1
f.
K4|p,t
n -: .
,-Ht 1
1
1
Ett, ■ t
}
:' ^
i
C".HAPKL-{)N-i he-Hill in Oak Ridge
But residents were not entirely
without state and local civic rights,
ihe legislature of Tennessee, con-
cerned over the loss of state lands
and taxes in earlier large cessions to
the federal government, declined the
War Department's request in early
1943 to cede sovereignty over the
Tennessee site: Oak Ridge's legal
status was that of a federal area, not a
federal reservation. Hence, its resi-
dents legally were citizens of either
Roane or Anderson County and of
the state of Tennessee, subject to
their criminal and civil laws and enti-
tled to the civic privileges of those ju-
risdictions. They could, for example,
vote in state and county elections. If
they violated the law, they were sub-
ject to arrest bv Oak Ridge police-
men, deputized bv the sheriff of An-
derson County, and trial in local or
state courts. The schools for their
children, too, remained legally a part
ot the Anderson County system, al-
though they were built and operated
largely with federal funds. Because
the District, for reasons of security,
limited school attendance to the chil-
dren of residents, the attorney gener-
al of Tennessee ruled that the schools
were nonpublic and therefore not
ehgible for state aid.^^^
Residing in the atomic communities
in Tennessee during the war years
was in many respects similar to living
in frontier settlements or boomtowns:
mud in winter and dust in summer;
houses partially built and incomplete-
Iv furnished; the stores with essential
items missing from their shelves;
overcrowded schools, churches, and
theaters; inadequate recreational ac-
tivities, at least in the early months;
and countless other deficiencies asso-
ciated with communities that have
grown too fast. Nevertheless, many
Oak Ridgers would later recall with
pleasure the prevailing sense of cama-
raderie and democracy among resi-
dents drawn from all walks of life —
Nobel Prize-winning scientists, corpo-
rate executives, plant managers,
skilled workers, officers and enlisted
servicemen, manual laborers, and
housewives — as they shared together
the many hardships of life and
worked together to solve the prob-
lems of da\-to-day living under diffi-
cult circumstances. And for many
residents, the excitement and satisfac-
tion of being part of a great and
32Ml)n, Bk. I. \()l. 12, pp. 9.1-9.9 and 11.1-
11.1:5. i:)AS.A: Robinson, Oak Ridge Slon: pp. 60-61
and 6,'5-64; Completion Rpt, Skidmoie, Owings and
Merrill, sub: Portion of Townsite Planning of Oak
Ridge, pp. \l-\-..S, OROO.
IHK AIOMIC: COMML Ml IKS IN TENNESSEE 449
unique enterprise that might well for the many drawbacks. ^^
prove to be the kev to winning the '~~: T"
„^ , • ^ ■'s Robinson, Oak Ridnf Slon. pp. 46-47 and 51-
war sutticed to more than compensate r,i: Compton, Ammu Q_uni. pp. i,58-go.
CHAPTER XXII
The Atomic Communities in
Washington State
The atomic communities of the
Hanford Engineer Works (HEW) in
south central Washington State were
in the vicinity of one of the great his-
torical routes of immigration to the
Northwest United States. In 1805
Lewis and Clark had covered a por-
tion of the famed Oregon Trail as
they made their way down the Snake
River to the Columbia, and a genera-
tion later thousands of settlers had
traversed it as they forged westward.
Indian wars, however, delayed settle-
ment in central and eastern Washing-
ton until the 1850's and, thereafter,
the general aridity of the semidesert
sagebrush country in the vicinity of
the confluence of the Yakima and Co-
lumbia Rivers discouraged attempts at
agriculture, except for some sheep
raising, finally, in the early 1900's,
limited development of irrigation at-
tracted a few farmers, who planted
orchards and raised crops of mint and
alfalfa. It was they who, in the early
spring of 1943, suddenly faced dis-
jjlacement from their homes in three
tiny rural hamlets — W^hite Bluffs,
Hanford, and Richland — to make way
for thousands of construction and op-
erating employees of the plutonium
project. Events remote from the
peaceful agriculture piusuits of these
modern pioneers were to bring this
hitherto bypassed region into the
mainstream of American history.^
Selecting Sites
Eaced with development of an area
isolated from any sizable city, Du
Pont and Army engineers began plan-
ning early for large on-site communi-
ties. Because of the onmipresence of
radioactivity in the plutonium pro-
cesses, they could not follow the
normal practice of having construc-
tion and plant-operating employees
live adjacent to the production plants.
Scientists had indicated that it would
not be safe for plant-operating em-
ployees to reside within 10 miles of
the pile and separation production
units. And because these units would
have to be tested during the later
phases of plant construction, even
construction employees would have to
live some distance from them.
Saving time was another urgent
consideration in location planning.
' Dirlio/uin (i/ Aiucnidu IIisloi^. w\ . cd., s.\.
■'Oregon irail" bv Robert Moullon Clalkc; MDH,
Bk. 4, Vol. 4, "Land Acquisition, Hanlord Knginccr
Works," pp. 2.1-2.9, D.ASA; Du Pont (.onsti Hist,
\ol. 1, pp. 2-(), 8-9. and maps (pp. .S and 3). HOO,
•Sfc also Cb. I\-.
IHK AlOMK. COMNUMUKS I\ W ASHINC; ION SIAIK
451
Project engineers laxored sites al-
ready oeenpied 1)\ rural villages,
where diey would be able to lake ad-
vantage of existing grading, buildings,
road networks, and utilities. Fo facili-
tate the selection process, they drew
up three alternate site plans. The first
proposed a combined construction
and operating community at Benton
City on the Yakima, a few miles west of
Richland and about 24 air miles from
the main process area. {See Map 4.)
The second proposed three separate
communities: Camp A, about 2.5
miles south of the existing \illage of
Hanford; Camp B, about 2 miles
north of Richland; and Camp C, in
the hamlet of White Bluffs. Under
this plan, when the time came for
startup of the process plants, the
three camps would be consolidated to
form an operating village at the Camp
A site. Ihe third plan called for locat-
ing all construction and plant-operat-
ing employees at the Camp A site.^
After giving due consideration to
each plan, Du Pont and Army engi-
neers agreed to establish two separate
communities: a construction camp at
Hanford and an operating village at
Richland. Reasons of safety and effi-
ciency dictated that all construction
employees should reside in a single
community, and Hanford appeared
best to meet such requirements. Its
distance of about 6 miles from the
nearest process areas was sufficient
not only to ensure the workers' safet\
during startup testing but also to pro-
vide them easy access to all the major
work sites. Its location at the intersec-
tion of the Connell-Vakima state high-
way and Pasco-White Bluffs road
and on a brandi line of the Chicago,
Nfilwaukee, St. Paul and Pacific Rail-
road gave it the necessary road and
rail access. Water was available irom
existing wells and the river and elec-
tricity from a Pacific Power and Light
Company substation. The natural
contour of the land at the village site
made grading for construction unnec-
essary and simplified sewerage and
drainage problems, and the existing
buildings provided the temporary
housing that would be needed bv the
first construction crews. ^
Safety was the determining factor in
the decision to locate the operating
community at a separate site. Project
engineers found that two locations —
Benton City and Richland — both met
the basic criteria: Each was about 25
miles from the pioduction plant sites,
and each had adequate road and rail
access, a sufficient source of water
and electricit} , and a number of exist-
ing buildings. But Benton Cit\ had
not been included in the original land
acquisition and project officials be-
lieved that, for reasons of security,
the operating village must be within
the reservation. They could have
taken steps to acquire the Benton
City area, but serious opposition had
arisen among local residents be-
cause of the extent of the govern-
ment's original land acquisition. Seek-
ing to avoid additional acquisitions
likely to inflame public opinion,
project community planners chose
Richland as the site for the operating
communitv.*
2 MDH, Bk. 4, \<)l. 5. "Coiisinu lioii." pp. 5.2-5.;5
and App. DKi (Altcrn;.ic Siiv I'Li.is for Ft.uilon]
Camp), DASA; Du I'oni (oiisir Hisi, Xol. 1, pp. 41-
42, HOC).
=' MDH, lik. 4, \()1. .'i, pp. ,5.2-."i..S, DA.SA: Mal-
ihia.s Diarv, 2.5 Feb and 24-2,5 Mar V.S. OROO: Du
I'oni Con.slr Hi.st, X'ol. 1, pp. 9-10 <m<l 42-4.'}, and
\()1. 2, pp. :M8-49. HOC).
•» MDH, Bk. 4. \'()1. ;}, •Dtsii.ii,- pp. S. 1-8.2,
DA.SA: Matthias Diarv. 8 and 10 Mar 4:i, OROO;
Du I'ont Consti Hist, Xol. 1, p. 102. HOC). .See- al.so
Ch. \\ .
452
MANHAll AN: THE ARMY AND IHE A lOMIC BOMB
Hanford Construction Camp at HEW. Aerial view slunvs its veist sizt
Ilaiijonl: The Coiistruetion Camp
Once the planners had reached a
final decision concerning location, Du
Pont immediately began work on both
the construction camp and the oper-
ating community, with Du Pont and
Army personnel at the Hanford site
and Wilmington headcjuarters work-
ing in close cooperation. Planning
and design of the two communities
proceeded more or less simultaneous-
ly in early 1943, but the construction
camp which had to be ready for occu-
pancy as soon as possible had first
priority.
At the outset, Du Pout's construc-
tion camp planning and design efforts
were handicapped by the tenuousness
of essential quantitative data. Only
indeterminate figures were available
on how many workers were likely
to reside in the camp, because
the Metallurgical Laboratory-Du Pont
design team had not progressed far
enough with plans for the plutonium
production facilities to provide an ac-
curate estimate. A similar problem ex-
isted with figures on how many con-
struction workers could live in off-site
housing, because more urgent mat-
ters had delayed the Hanford area en-
gineer, Lt. Col. Franklin T. Matthias,
from making a survey of the Hanford
area.
Lacking this statistical data, Du
Pont had no choice but to go ahead
with plans and designs on the basis of
THE AIOMIC CX)MMUNiriKS IN VVASHINC, ION S lA IK
453
Camp Administrative Area {foregound) and Residential Area (background)
AT HEW
hurricdlv prepared estimates that pro-
jected a total construction work force
of twenty-five thousand to twenty-
eight thousand, half of whom, the
company hoped, would live in off-site
housing. \o circumvent inevitable re-
visions, Du Pont developed a plan-
ning strategy of adopting easily ex-
pansible layouts and building designs
and of learning the experience of
other firms that had built construc-
tion camps in isolated, semiarid re-
gions with adverse climatic condi-
tions. This circumspect approach
proved fortuitous, especially in view
of subsecjuent developments that re-
vealed earlier projections on the size
of the construction force were grosslv
inaccurate (nearly twice as many
workers would be required as origi-
nally estimated) and that very little
off-site housing was available. Mean-
while, General Groves made a thor-
ough inspection of the Washington
site in March, after which he. Colonel
Matthias, and other Army representa-
tives sat down with Du Font's field
staff and worked out basic steps for
getting construction started.^
Field work began at the Hanfbrd
campsite in early April. On the
fourth, Du Pont and Ilanford area
•■^MDH, Bk. 4, \<)1. b. pp. .5.1-5.2. DA.SA: Rpi.
sub: Iinc'sligalions ol Proj.s Ha\ini> Similar Climatic
CoiHliiioMs.'.a. 194.S. HOC): Mail'hias Diarv, 24-23
Mar 4.H. OROO; C.rovis Diarv, 24-2,5 Mar V^, I-RCi.
454
MANHAI IAN: THE ARMY AND IHE AIOMIC BOMB
office personnel — with plans in hand
for the first barracks, mess hall, and
service buildings in the construction
camp — carried out a general recon-
naissance of the area and reached
agreement that work should begin im-
mediately on facilities adequate to
house and feed a starting work force
of two thousand. They also agreed to
proceed with orders for materials and
equipment in quantities sufficient to
provide units for four thousand work-
ers and, at the same time, established
a construction schedule looking to
completion of the whole camp by
1 December. On 6 April, workers
began erection of the first barracks.^
Du Pont officials responsible for
Hanford construction met biweekly
(later weekly). They drew up procure-
ment schedules for critical building
materials, establishing a policy of
keeping on order equipment for ten
barracks and one mess hall to fore-
stall the inevitable delays in delivery,
hi late July, Du Pont commissioned
the architect-engineer firm of Jones,
Couillan, Ihery, and Sylliassen to
review all plans for the campsite and
assist in development of further lay-
outs. The recommendations of the ar-
chitect-engineer, combined with jjcri-
odic subsequent studies of particular
problems by Du Pout's field engi-
neers, provided the basis for the fur-
ther development and operation of
the construction camp."^
In September, on the basis of
the Metallurgical Laboratory-Du Pont
design team's new report that con-
struction of the plutonium production
plants would require a considerably
larger work force than previously
anticipated, the Army and Du Pont
moved to firmer ground in their pro-
jections of peak population recjuire-
ments for Hanford. Actually, the peak
of construction came in November,
when for a period of more than a
month some fifty-three hundred
workers were employed in building
the camp, including some diverted
temporarily from the plant construc-
tion work force. But it was not until
July 1944 that Du Pont announced
that construction was 98 percent com-
plete, with nearly twelve hundred new
and remodeled buildings and suffi-
cient support facilities to house, feed,
and supply the daily necessities of the
fifty-one thousand people who, by
that time, were living at the construc-
tion camp.®
Completion of the camp facilities in
time to meet the peak population re-
quirements was possible only because
of the close cooperation of the Han-
ford area engineer with Du Pont and
its subcontractors in overcoming
chronic labor shortages and procur-
ing a variety of critical building mate-
rials. Du Pont benefited greatly from
Manhattan's countrywide recruiting
efforts in 1943 and 1944 and from
the Army's approval of its use of sub-
contractors who had access to local
labor. P\)r example, the Walla Walla
(Washington) firm of A. A. Durand
6M1)H, Bk. 4 \()1. 5. pp. 3.4-5.5 and 5.2()-5.'Jl .
DASA; Du I'oni C.onstr Hisi. \()1. 2. p. ,174. HOC).
^ MDH, IM. 4. \'()1. 5. pp. 5.5-5.7 .md 5.1',),
DASA; Rpl, Jones, Couillan, 11km v, and .Svlliasstii
(aixhitt'ct-cngint'cr). sub: Housing and 1 rairu .\nal-
vsis of the lianlord Camp Area, 17 Aug 4:i, HOO;
Du Font Consii Hisi, \ ol. 2, p. .182. HOO.
8MDH. Bk. 4, \ol. 5, pp. 5.21 and .\|)p. B19
(Hanford Camp Bldg Conslr Dates), 1).\.S.\; Disi
Kngr, Monthlv Rpt on D.SM Proj, Jun 44. OCXi
Flics. {,cn CoiTcsp, MP Files, Fldr 28, Fab A, MDR;
Du Font Constr Hist, \ol. 2, pp. 351 and 380-83,
HOO.
THK AlOMIC COMMIMUKS IN VVASHINC; ION S T A IK
455
and Sons drilled wells and the Seattle
firm of McManama and Company
erected boilers. Matthias and his staff
expedited procurement of many items
in short supply, including Army tents,
boilers, hot water heaters, toilet fix-
tures, fans, cooling and refrigeration
units, heating coils, and mess hall
equipment. Through Army channels
the area engineer arranged for trans-
fer from other government projects of
many materials otherwise virtually un-
obtainable, riie Army also actively
supported Du Pout's various meas-
ures to shorten construction time and
save materials, including employment
of prefabrication and preassembly
wherever feasible. An outstanding ex-
ample was the decision by Groves and
Du Pont to substitute prefabricated
hutments for barracks.^
Because of the persistent problems
of procuring and conserving an ade-
quate construction work force at the
Washington site, the Army stressed
those aspects of the Hanford camp
that would make living conditions
more tolerable for the average em-
ploxee. An example was its effort to
ensiue that Du Pont incorporate ef-
fectixe means for heating, cooling,
and ventilating housing units and hut-
ments— a very important consider-
ation in view of area climatic condi-
tions characterized b\ extremes in
heat and cold, rapid changes in tem-
perature, and occasional severe dust
storms. Ihe svstem eventuallv in-
9 MDH, Bk. 4. \()1. 5, p. 5.18-5.21 and Apps. B4
(Siiminan of Siibcontiat Is), B23 (Hanford C,amp
Subcoiuracls), and B24 ((;<)mplcli()n Forccast-Han-
ford Camp), D.A.S.A; Matthias Dnuy. .Apr 4:^-Iul 44
(sec entries of 22 .Apr, 18 Mav, and 11 Jnn 4:i).
OROO; Ms, Hageman, "Hanlord: Ihreshold of an
Kra," H)4(i, p. 71. .Adniin Files, (len Corresp, 4(il
(Hanford). MDR; Du Poni Constr Hisi, \ol. 1, pj,.
51-r>8, 21S-.S5, 282-.S2.S, IIOO.
stalled employed hot air heated by
steam from a central plant. Although
this method was more costly than
having coal heaters in each individual
housing unit or hutment, it provided
a means for circulating air, cooled by
water evaporation, in the hot summer
months. ^°
Newly recruited w(jrkers found
themsehes in what must certainly
have been one of the largest tem-
porary communities ever erected.
Hundreds of one-story structures,
standing in evenly spaced rows along
freshly graded streets, filled the gen-
eralh fiat terrain west of the broad
Columbia Ri\er. The majority of
these structures were housing units.
At the center were row upon row of
wing-type barracks. To the south
were hundreds of much smaller hut-
ments. On the north and west stood
thousands of family-sized trailers,
each positioned on its individual plot.
Interspersed at conveniently located
intervals were cafeteria buildings. In a
triangular-shaped area near the river
and between the barracks and the
north trailer camp were most of the
commercial and administrative build-
ings, some remodeled from existing
structures. Here also were many of
the conmumilv and recreational facili-
ties— a theater, church, school, hospi-
tal, library, and an auditorium-gymna-
sium. Rising here and there above the
low level of most structures were the
smoke slacks of heating plants, water
'o Matthias I)iar\, (), S, and 15 Apr 4.S, OROO.
For a \i\id des(ri|)tion of (he periodic dust storms
that oteiirred al the Hanford camp see led \an
.Arsdol, Ihinfotd: I'lic Bin, Sirret (Richland, Wash.: Co-
Itnnbia Rmm \rws. 1958), pp 50-51. Du I'ont Consir
llisi. \ol. 1, pp. 87-<.»l. HOO.
456
MANHAIIAN: THE ARM\' AND IHK AlOMIC BOMB
Richland Village at HEW. Aerinl view shows the coiiniu'rcKil renter {foreground),
buildings of the administrative headquarters (middle ground), and the residential area
( background).
and oil storage tanks, and a few trees.
Utility lines strung on tall poles lined
every street, seeming to bind together
the scattered segments of the Han-
ford camp.^ ^
Rtfhlaiid: The Operating Community
Richland, with a population of 250,
was in early 1943 the center of an ag-
ricultural community of some 600
persons who derived their livelihood
from farming the irrigated bottom-
lands near the junction of the Yakima
and Columbia Rivers. Most of the
commercial and civic structures of the
village and some of its homes were
built along the axis of a state high-
way, providing a ready route of access
eastward to the important communi-
cation centers of Kennewick and
Pasco and northward to Hanford and
White Bluffs. Hie original buildings
of Richland were of substantial con-
struction, many of them cement or
brick. Community services included
an underground water system (but no
central sewerage system), electricity,
and telephones. The roads were
chiefly gravel or packed earth, but
some had asphalt surfacing. Sur-
rounding the village center were nu-
merous small farms, planted with or-
chards or other irrigated corps. ^^
" MDH, tik. 4, \'ol. 5, pp. .''i.(i-5.18 and App. A4
(Map, Hanford Camp Layout), DA.SA; Du Poiil
Const! Hist, \'oL 2, p. 386 and 392-,512, HOO.
'2 MDH, Bk. 4, \<>1. ;5, pp. 8.2-8.:5, D.A.SA; Dn
Pont C.onsii Hisl, \ol. 1, pp. (") and I()l-()(i, HOO.
THK AlOMIC COMMINII IKS IN WASHINC/ION S lA IK
457
As with the Hanforcl construction
camp, the Army turned ()\er to Du
Pont the task of converting this farm
community into suitable lieadquarters
for the massive pkitonium production
project and a home for tiiou-
sands of plant-operating employees.
The Army's aim was to enable the
prime contractor to achieve maximum
operating efficiency in accomplishing
its task by combining recjuirements
and services needed for both the pro-
duction plants and the village, and
thus from the outset General Groves
and Colonel Matthias emphasized the
importance of making the most eco-
nomic use of project resources. Illus-
trative of this policy was the size of
permanent houses for the supervisory
and technical operating personnel. Du
Pont believed that such personnel
would rccjuire at least three-bedroom
homes, but the Army disagreed and
assigned most of them only one- or
two-bedioom homes. Po ensure com-
pliance with Army policy, the Han-
ford Area Engineers Office monitored
all housing activities. ^^
Colonel Matthias had considerable
authority as area engineer and uti-
'3MDH, lik. 4. Vol. 6, "Operations, " p. 9.1,
D.A.S.A; Lti Contract W-7412-cng-l, 1 Dec 42 (ac-
cepted 21 Dec 42), OCG Files, (ien (]orresp,
('.roves Files, Fldr 19, Tab B, MDR; Contract \V-
7412-eng-l (Du Pont), 8 Nov 4.1, ORCK); Matthias
Diarv, 2-1^ Mar. 16-17 and 21 Apr, 20 Mav, 29 Nov
43 and 4 Jan 44, OROO. .See also I.tr, H. i. i:)aniels
(Design Proj Mgr, I NX Div, Du Pont) to Croves,
sub: Proj 9536-\'illage, 2.5 Apr 43, and Msgs,
Matthias to K. B. Yancey ((ien Mgr, Kxplosivcs
Dcpl, Du Pont). 23 .Apr 43, and Yancey to Matthias,
24 .\pr 43: I.tr, Daniels to (Iroves, sub: Proj 9.536-
HKW and 1100 Area- lovvnsite, 28 Apr 43, and
Msgs, Matthias to Yancey and \ancey to Matthias,
both 26 Apr 43; Memo, Matthias to (Proves, 4 Sep
43. All in Admin Files, (ien Corresp, 620 (Ilanlord),
MDR.
lized several channels to exercise
direct control over design and con-
struction of Richland. Through his
legal officer, he re\iewed and ap-
proved Du Pout's subcontracts and
other legal arrangements relating to
the building of the village. Phrough
his construction chief's so-called Rich-
land Division, he maintained a more
specific check on construction activi-
ties. In addition, Matthias made fre-
quent personal inspections of the vil-
lage and conferred regularly with Du
Pont headquarters officials and field
representatives.^'*
With virtuallv all of its own design
and engineering personnel committed
to woik on the production facilities or
other wartime projects, Du Pont had
few employees to spare for the village
project. Hence, with permission of
the Army, it opened negotiations with
several architect-engineer firms in the
Pacific Northwest. G. A. Pehrson of
Spokane was the low bidder and, in
mid-March, Du Pont signed a contract
with the firm.^^
Pehrson started work immediatelv
on layout plans for the village com-
munity, using as a guide the Du Pont-
Army population projections that as-
sumed a 40- to 5()-percent occupancy
in off-site housing. Because these pnj-
jections forecasted a population of
6,500 with possible expansion to
7,500, Pehrson drafted plans for 980
"» MDH, Bk. 4, \'()1. 5, Apps. B57-B58 (Org
Charts, Hanlord Area Fngrs OfFue and Du Pout's
HFW Field Pioj), DASA; Du Pont Constr Hi.st,
\ol. 1, pp. 23-139 (Org Charts, Hanlord Area
Fngrs Office and Du Pont's HEW Field Proj), HOO;
■Matthias Diaiv, Feb 43-Dec 45, passim, OROO.
'5 MDH, Bk. 4. \ol. 3, pp. 8.4-8.5 and App. B4
(.Suininaiv of Subcontracts), DASA; Matthias Di.ir\,
2, 5, 9, 12. 15. and 17 Mar 43, OROO; Disi Fngi.
Monthly RjjIs on DSM Proj, Feb-Mar 43. MDR; i)ii
Pont Constr Hisl, X'ol. 1, pp. IOC) ;md 28.5-8r),
HOO.
458
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
conventional family units of relatively
permanent construction and also for a
few dormitories to house single men
and women. But Du Pont and Mat-
thias soon discovered from incoming
employees that suitable places to live
in the surrounding communities were
extremely scarce. Consequently, in
June they revised initial estimates of
Richland's ultimate population to
7,750 with potential growth to 12,000
and instructed Pehrson to increase
the number of conventional family
dwellings to 2,000. Pehrson had
barely started on the expanded pro-
gram when new calculations indicated
the Richland population was likely to
escalate to at least 16,000 (later re-
vised to 17,500). Following consulta-
tion with Matthias, Du Pont directed
Pehrson to add another 1,000 family
units, bringing the total to 3,000. ^^
Faced with a vastly larger housing
program than anticipated, Du Pont
and Matthias began looking for ways
to expedite development of the Rich-
land community. Aware that General
Groves had spoken quite enthusiasti-
cally of the advantages of portable
prefabricated housing being installed
at the Tennessee site, Colonel Mat-
thias in late October went to Oak
Ridge's East Village to inspect the
units. Following his return to Han-
ford, the area engineer coordinated
with District officials to procure
sample prefab units and to arrange
for an on-site inspection visit by a
Tennessee Valley Authority portable
housing specialist. The decision to
use portable dwellings as supplemen-
tal housing at Richland came in late
December, at which time Manhattan
selected the Prefabricated Engineer-
ing Company of Portland, Oregon, to
supply the units. Du Pont negotiated
the initial contract for 500 prefabs,
which Matthias approved in early Jan-
uary 1944, and subsequently ordered
an additional 1,300, increasing the
total of new and existing units to
4,410. Coincident with this activity
was Du Pont's expanded construction
of other facilities, such as dormitories
(eventually 25 to house more than a
thousand persons) and commercial
and service buildings (stores, schools,
churches, recreational areas, and
utilities). ^''^
To further facilitate community de-
velopment, the Army approved Du
Pont's subcontracting of most con-
struction to two firms familiar with
building problems in the Pacific
Northwest — Twaits, Morrison, and
Knudsen of Los Angeles and Smith,
Hoffman, and Wright of Portland.
They specified village layouts that
took advantage of natural terrain and
that preserved existing buildings, or-
chards, shade trees, roads, and
streets. They endorsed house plans
that included basic furnishings, recog-
nizing the great difficulty workers
from other parts of the country would
16MDH, Bk. 4, Vol. 3, pp. 8.3-8.8, DASA; Ms,
Hageman, "Hanford: Threshold of an Era," 1946,
p. 34, MDR; Dist Engr Monthly Rpts on DSM Proj,
Oct-Nov 43, MDR; Groves, Xow It Can Be Told. p.
89; Matthias Diarv, 18 May, 3 and 24-25 Sep 43,
OROO; Du Pont Constr Hist, Vol. 1, pp. 108-10,
and Vol. 4, pp. 1223-25, HOO.
1^ MDH, Bk. 4, Vol. 3, pp. 8.5-8.28, passim, and
Vol. 5, App. B51 (Chart, Richland Village Constr
Progress), DASA; Ms, Hageman, "Hanford: Thresh-
old of an Era," 1946, pp. 34-35, MDR; Ltr, Matthias
to TVA, Attn: Gordon Clapp, 1 1 Dec 43, Admin
Files, Gen Corresp, 620 (Hanford), MDR; Dist Engr,
Monthly Rpts on DSM Proj, Jan and May-Jun 44,
MDR; Matthias Diarv, 26 and 28-29 Oct, 8, 14, 16,
23-24 Nov 43 and 12 Jan 44, OROO; Du Pont
Constr Hist, Vol. 1, pp. 109-10 and 116-46, and
Vol. 2, pp. 1226-29, HOO.
IHE AlOMIC (X)MMUNHIES IN \VASHIN(; 1 ON S lA IK
459
liavc in getting their hoiiseliold goods
moved in a wartime economy and the
limited avaihibility of home furnish-
ings in stores in towns near the site.^®
Ihese timesaving measures, for the
most part, were effective. Construc-
tion of the village moved ahead on
schedule, and the district engineer re-
ported to (leneral Groves in February
1944 that the village was more than
half finished. 41iere were occasions,
nevertheless, when serious delays
were avoided onh as a result of direct
and vigorous efforts of the Hanford
area engineer. A typical case was Pre-
fabricated Engineering's problem of
transporting its portable housing
units to the village site.^^
Prefabricated Engineering lacked
the ecjuipment necessary to truck its
portable housing units to Richland
from its manufacturing plant in
I'oledo, Oregon. So, in early 1944, it
subcontracted the job to a Chicago-
based trucking firm and arranged for
routine clearances from the Office
of Defense Transportation and the
Interstate Commerce Commission.
Shortly thereafter, unforeseen compli-
cations developed. As soon as the
trucker began assembling his equip-
ment in Oregon, both government
agencies raised strong objections to
the fact that Prefabricated Engineer-
ing was not conforming to established
rules, stating that wartime regulations
on conseivation of scarce resources
'« MDH. Bk. 4, \"<)1. 3. pp. 8.8-8.9 and 8.12-8.13.
and \()1. 5, pp. 8.3-8.5 and .\pp. B4. D.\.S.\: Dm
I'ont (:on.str Hi.st. \'ol. 1. pp. 111-12. 288. 292-93,
301-02. 317. and \()1. 4. p. 1228. HOO.
13 Di.st Engr, Monthlv Rpt.s on D.SM Pioj. Feb 44.
Mi:)R; Matthias i:)iaiv. Dt-c 43-Fcb 44. passim (tspe-
tiallv 28 Dc( 43 and 1 and 2:)-2ti Jan 44). OROO;
Dn Pont Consii Hist. \ol. 4. |)p. 1223-2.5 (Chan.
Ridilaiui \illai>c- Consii Proiricss). HOO.
recjuired the company to employ local
truckers. At the same time, Pacific
Northwest representatives of the In-
ternational Brotherhood of 4'eamsters
threatened to forbid use of union
drivers, claiming that the trucking
firm's ecjuipment did not meet union
safety standards.
Apprised of this thi eatened delay in
the shipment of the portable housing
units. Colonel Matthias took immedi-
ate action. As a first step, in an effort
to relieve Piefabiicated Engineering's
overtaxed storage facilities and to
prevent any serious disruption of the
Richland construction schedule, he
arranged to have the prefab units
transported by rail — a much more
costly procedure — until such time as
the obstacles to trucking could be
overcome. He then assumed the role
of a mediator in ongoing union-gov-
ernment negotiations, which dragged
on until April 1944. Matthias was suc-
cessful in overcoming the objections
of the Teamsters union, but not those
of the government agencies. Conse-
quently, Prefabricated Engineering
was left with no alternative but to
engage the services of a local trucking
firm, even though the latter's per-unit
hauling cost was considerably higher
than that of the (Chicago company. ^°
By late spring of 1945, transforma-
tion of the little rural hamlet of Rich-
land into a bustling industrial com-
■^° Matthias, sub: Chionological Rpi on Hauhng
Piffab Houses iioni 1 oledo, Oreg.. to HKW. Hi |nl
45; I.tr, Matthias to (iroves. sub: (lost of Hauling
Prefab Houses to Richland, 19 Jul 45; OOke Menici.
(iavin Hadden (Oroves's .Asst) to (iroves. sub:
Matthias Rj)! (1() Jul 45) and I.tr (19 Jul 45) on Cost
of Hauling Prefab Houses to Richland. 26 Jul 45;
Memo, (lioxes lo Matthias, sub: Chronological Rpt
on HauHng Prefab Houses from 1 oledo. Oreg.. lo
HF.W, 31 Jul 45. .Ml m .Admin Files. C.en Corresp.
()20 (llanfoi(l). MDR
460
MANHAI I AN: THE ARMY AND IHE A lOMIC BOMB
munity of scientists, engineers, mili-
tary administrators, and skilled work-
men and their collective families was
very nearly complete. In a fenced-in
area at the center of the operating vil-
lage were the wood-frame buildings
of varying size that housed the HEW
administrative headquarters. Immedi-
ately to the east and southeast of the
headquarters and toward the low-
lying Columbia River was "down-
town" Richland, built around the
original commercial center of the vil-
lage. Here were stores and a variety
of service facilities, a hotel for visi-
tors, a theater, churches, a cafeteria,
and the dormitories for single men
and women. Surrounding downtown
on the south, west, and northwest
were residential areas, with neighbor-
hood stores and service facilities.
Most of the conventional houses were
clustered in two large sections — one
directly south of the village center,
the other to the northwest — with here
and there shade and fruit trees re-
maining from the farms that had oc-
cupied the area. On the outer fringes
of the conventional housing sections
were a few of the flat-roofed prefabri-
cated houses, but most of the homes
of this type were concentrated in a
roughly rectangular zone directly west
of the administration buildings. Sev-
eral main streets, which interconnect-
ed with the many new residential
streets, carried motor traffic north-
ward from the village to the produc-
tion plant area and south and cast to
Kennewick and Pasco. A newh built
railroad spur line gave Richland a
direct connection with the Union Pa-
cific and Northern Pacific Railroads a
few miles to the south of the
village.^ ^
Conun unity Management
Du Pont had complete responsibil-
ity for community management func-
tions. The Hanford area engineer's
role was largely supervisory except on
certain matters, such as controls over
rents and real estate transactions.
Colonel Matthias established a Com-
munity Management Branch in the
Engineering and Maintenance Divi-
sion of his office to exercise these
controls; review contracts; maintain
records on facilities, leases, and finan-
cial statements; and work with Du
Pout's HEW Service Department. The
company assigned overall community
management to one of the two assist-
ant superintendents in this depart-
ment. Division supervisors managed
housing, commercial concessionaires,
community services, public buildings,
and other facilities. ^^
Hanford Camp
For the Army and Du Pont, admin-
istration of the Hanford camp pre-
sented almost as many problems as
building it. lo ensure its efficient op-
eration, Du Pont, with Army approval.
2 1 MDH, Bk. 4, \'ol. 5. Apps. A (Map, Richland
Area) and B51 (Chart, Richland Village Constr
Progress), DASA; Ms, Hageman, "Hanford: Thresh-
old'of an Era," 1946, Map Annex (HEW), MDR;
Matthias Diarv, 29 Nov 4,'^ OROO; (movcs, \ow II
Can Br fold. p. H9: Du Pont C.onstr Hist, \'ol. 1, pp.
105 and 107-4(), and \oi. 4. pp. rj:i;?-1318 (photo-
graphs of area and sinutures with descriptions),
HOC).
-2 Contract W-74 12-eng-l (l)ii Pont), 8 .Nov 43,
OROO: MDH. Bk. 4. \'oi. ti, p. 9.1 and .Apps. B8
(Org Chart, Hanford Area Engrs Office) and B12-
Bl.'5 (Oig Chart, Du Ponts HEW .Svc Dept), DASA;
Du Pont'Opns Hist, Bk. 17. Pt. 1, pp. 1-14. HOO.
IHE ATOMIC COMMl^NniES IN WASHING ION STATE
461
obtained in April 1943 the services of
the Olympic Commissary Company of
Chicago, a professional management
organization. Olympic assumed re-
sponsibility under its contract for op-
eration and maintenance of housing
(except trailer plots, which Du Pont
rented directly), mess hall, and recre-
ational facilities. Du Pont also ar-
ranged leases with private operators
for stores, garages, a laundry, a bank,
and similar commercial services. It
left administration of the schools in
the hands of the Washington State
Department of Education. Du Pont,
however, retained direct responsibility
for fire protection and maintained a
Hanford Patrol to police the camp.^^
The Army kept close check on the
performance of the various organiza-
tions providing services for Hanford.
On his periodic inspection trips to the
camp. General Groves gave close at-
tention to Olympic's management of
mess halls and housing. As a result of
his complaints concerning certain de-
ficiencies, Du Pont directed a reorga-
nization of the company's operations
in June 1943. Again in December, the
area engineer reported to Du Pont
that management practices still
needed some reinforcing in the opin-
ion of the Manhattan commander,
who felt "there is no reason why the
large losses recently being incurred in
camp operations could not be re-
duced." Finally, in February 1944,
after further changes in Olympic's
methods of operation. Groves indicat-
es mdh. Bk. 4. \ol. 5. pp. 5.12-5.18, .Apps. B4
and B23, D.ASA: Matthias Diarv, 25 Mar 43, OROO;
Dii Pom Conslr Hist, Vol. 1, pp. 91 and 154-62,
HOO.
ed satisfaction with its management of
the camp. 2*
Because of the temporary character
of the Hanford camp, Manhattan
sacrificed comfort and convenience
and provided only minimum amen-
ities in the housing facilities. This
policy caused considerable dissatisfac-
tion among Hanford residents, some
of whom filed complaints with the
War Manpower Commission. In re-
sponse to inquiries from commission
officials investigating these com-
plaints. Groves explained that the
Army had to avoid overelaboration
and overexpenditure because of the
wartime shortages of construction
materials and labor and the need to
adhere to rigid construction sched-
ules. Subsequently, a project survey
determined that the unsatisfactory
living conditions at the camp were a
chief factor in the continual turnover
of construction personnel, which ap-
proached an unacceptable rate of 21
percent in the crucial summer of
1944.
Other factors contributing to the
discontent were the demoralizing
sandstorms, the lack of sizable towns
to visit outside the reservation, over-
taxed commercial facilities, and the
segregated housing policy. The latter
policy precluded families, even hus-
bands and wives, from living together
and restricted occupancy on the basis
of sex and race. Recognizing, howev-
er, that some needed workers would
accept jobs on the project only if they
could bring their families, Du Pont
and the Arm\ decided reluctantly to
permit them in the trailer camps and
24Maithia.s Dian. 18 and 2,3 Juii and 7 Dec 43
(source of quotation) and 18 Feb 44. OROO.
462
MANHATTAN: THE ARMY AND IHE ATOMIC BOMB
provided schools for their children,
but the policy remained to discourage
family groups. ^^
Unfortunately, neither the Army
nor Du Pont could do very much
about most of these problems in the
few months that were still required to
complete the production plants. What
was feasible, they decided, was to
pursue more intensively all available
means to raise and maintain the
morale of the workers, with the aim
of making them more willing to
accept the unavoidable hardships.
Manhattan officials, including General
Groves, spoke to assembled groups
and the camp newspaper, "The Sage
Sentinel," carried stories emphasizing
the importance of the project to the
war effort. Du Pont, with consider-
able assistance from the area engi-
neer, greatly expanded the recreation-
al facilities. They brought nationally
known entertainers and popular or-
chestras to the auditorium-gymnasi-
um, which also doubled as a gigantic
dance hall; they encouraged regular
use of recreation halls for men and
women; they arranged for nightly
motion pictures in a quickly erected
tent theater; and they provided tav-
erns, bowling alleys, a four-thousand-
seat baseball stadium, nine softball
diamonds, and many tennis, badmin-
ton, volleyball, and horseshoe courts.
Groves himself directed that beer be
sold in whatever quantities needed
and the Hanford Works Employees
Association licensed a concessionaire
to install 150 pinball machines. The
program was effective and wartime
residents of Hanford would later
recall that the camp came to have "a
kind of gaiety, a temporary feeling,
the mood of a fair or carnival or
circus," ^^ all enhanced by the contin-
uous playing of music over a public
address system. Job terminations de-
clined and in the hectic months of
late 1944 and early 1945 the con-
struction work force brought to com-
pletion, on schedule, the great pro-
duction units of the plutonium
plant. 2'^
Richland J'lllage
For Du Pont and the area engineer,
management of the Richland village
entailed all the usual problems of a
rapidly expanding wartime communi-
ty, as well as the special problems
arising from the unique character of
the atomic project. From 1943
through early 1945, provision of ade-
quate housing for the work force was
certainly one of the most challenging
problems for the village managers.
Lacking reliable guidelines to allocate
housing to the three major groups of
employees that made up the work
force — construction, operations, and
government personnel — managers
frequently had to shift percentages,
depending upon current need. Before
January 1944, they allocated most
25 Matthias Diary, 6 and 18 Mav, 3-4 and 18 Jun,
21 Aug, 26 Oct, 14 Nov 43, OROO; Ltrs, Lawrence
A. Appley (Dep Chairman and Ex Dir, WMC) to
Groves, 23 Dee 43, and Groves to Appley, 7 Jan 44,
Admin Files, Gen Corresp, 620 (Hanford), MDR;
Du Pont Constr Hist, Vol. 1, pp. 86-91, and Vol. 4,
pp. 1361-65, HOO.
2«Van Arsdol, Hanford: The Big Senel. p. 29. See
also pp. 50-53.
"MDH, Bk. 4, Vol. 5, pp. 5.13-5.14. DASA;
Matthias Diary, 6 May 43 and 18 Feb 44, OROO;
Groves Diary, 10 and 18 Feb 44, LRG; Groves, \ow
It Can Be fold, pp. 89-93; Du Pont Constr Hist,
Vol. 1, pp. 163-72, Vol. 2, pp. 409-11 and 415-17,
and Vol. 4, pp. 1342-44, HOO.
THE ATOMIC COMMUNITIES IN WASHINGTON STATE
463
housing to construction and govern-
ment personnel, gradually altering
the basis until by March 50 percent
was going to operating employees, 40
percent to construction, and 10 per-
cent to government. After the peak of
construction passed, the population
of Richland declined to the extent
that some prefabricated houses were
vacated. Occupants of houses in Rich-
land paid rentals of between $27.50
and $80.00 a month, the amount
varying in relation to the size and
type of unit, and whether or not it
was furnished. The rent included all
utilities. Dormitorv occupants paid
from $15.00 to $22.50 per month.^s
As in the Hanford construction
camp, concessionaires operated most
of the commercial facilities in the vil-
lage under contracts negotiated by Du
Font's HEW Service Department. The
department employed competitive bid-
ding in selecting the concessionaries,
choosing those offering maximum
service to the village and the highest
monetary return to the government.
These commercial operators made
available to residents of the communi-
ty all normal items and services essen-
tial to daily living, such as food, drugs,
clothing, and entertainment, and de-
partment officials periodically checked
prices in order to maintain them at
levels comparable to those at stores in
nearby towns. In most cases the gov-
ernment provided building space, in-
cluding stationary fixtures, for the
concessionaire and the latter furnished
any mobile equipment required. ^^
28MDH. Bk. 4, Vol. 6, pp. 9.1-9.7 and App. B5,
DASA; Du Pont Opns Hist, Bk. 17, Pt. 2, pp. 1-31,
HOO.
2«MDH, Bk. 4, Vol. 6. pp. 9.14-9.16 and App. B4,
DASA; Du Pont Opns Hist, Bk. 18, Pt. 2, pp. 1-2
and 5.6, HOO.
During World War II the Richland
community had no formally constitut-
ed institutions of local government.
Du Pont, through its HEW Service
Department, provided Richlanders
with most normal community ser-
vices— utilities, street maintenance,
trash and garbage pickup, and fire
and police protection. A division of
the company's Plant Patrol, deputized
by the sheriff of Benton County,
served as the village police force, en-
forcing traffic regulations, investigat-
ing accidents, and overseeing a pro-
gram of crime prevention. One ex-
ception to this pattern of Du Pont
control was the public schools: The
federal government furnished and
maintained the buildings, and the in-
structional staff functioned under the
jurisdiction of the local county super-
intendent of schools. Du Pont and
Hanford Area Engineers Office repre-
sentatives served as advisory members
of the Richland school board, com-
prised of local residents. Most of the
money for operating the schools came
from the federal government under
provisions of the Lanham Act. An-
other exception was public transpor-
tation, including a government-owned
bus system that the area engineer
administered. ^°
Of the District's three operating
communities, Richland village most
nearly resembled the typical American
company town, owned and dominated
by a great industrial concern. This
was so partly because the Army's
presence was not nearly so apparent
as at Oak Ridge, with its District
headquarters and numerous technical
3°MDH. Bk. 4, Vol. 6, pp. 9.7-9.14 and Apps
B4-B5 and B12-B13, DASA; Du Pont Opns Hist,
Bk. 17, Pt. 1, pp. 4-5, HOO.
464
MANHA r I AN: IHE ARMY AND THE ATOMIC BOMB
emplovecs in uniform, nor as at Los
Alamos, with its very substantial mili-
tary population. Richland also had
fewer outward ramifications of physi-
cal security, such as the high encir-
cling fence patrolled frequently by
military police and dogs at the New-
Mexico site and the similar barriers
erected at crucial points along the
boundary of the Tennessee site. To
the uninformed casual visitor, the plu-
tonium connnunity appeared to be
just one more wartime boomtown
where the average employee and his
family had to endure the usual minor
hardships and inconveniences.
CHAPTER XXIII
The Atomic Communities in
New Mexico
Manhattan Project leaders' choice
of isolated and remote sections of
central New Mexico for developing
and testing the atomic bomb trans-
formed two hitherto sparsely populat-
ed regions into two unique scientific
communities. Some 20 miles west of
the famous Santa Fe Trail, the rugged
Pajarito Plateau became the site of
the Los Alamos reservation, the oper-
ating community comprising the
bomb development laboratory with
technical installations and a residen-
tial area; and some 160 miles south of
Los Alamos, the desolate Jornada del
Muerto valley provided the location for
the Trinity base camp, the temporary
community comprising a bomb test
area with technical facilities and a
campsite. Because of the geographic
inaccessibility and arid climate of
these regions, few of the thousands of
persons who came into the South-
west— either over the trail or the rail-
road that replaced it — chose to settle
there, further enhancing their suit-
ability for the highly secret activities
of the bomb development project.^
Los Alamos: The Operating Community
With the often snow-capped peaks
of the Sangre de Cristo Mountains
looming in the distance, the broad ex-
panse of the Pajarito Plateau ex-
tended westward from an altitude of
7,300 feet at Los Alamos to the heavi-
ly wooded slopes of the 9,000-foot
Jemez Mountains and eastward to the
wide Rio Grande valley. Bypassed by
the mainstream of settlement and de-
velopment, there were only a few
scattered ranches on the great plateau
by the early years of the twentieth
century. Of these ranches, the one sit-
uated atop the Los Alamos mesa — lo-
cally referred to as the Hill — attracted
the interest of two different purchas-
ers, each with a different objective. In
1917, to realize a long-standing
dream, former Detroit businessman
Ashley Pond had bought the ranch as
the location for his Los Alamos Ranch
School for Boys. A quarter of a centu-
' Lansing Lamoni in his history of the atomic
bomb {Day of Tnnily [New York: Atheneum, 1965],
p. 70) suggests that Oppenheimer, pressed by Bain-
bridge for a suitable code name for the desert
site, selected "Trinity," having just read the open-
ing lines of John Donne's Holy Sonnet XIV: "Batter
my heart, three-person'd God; for you / As yet but
knock, breathe, shine, and seek to mend." On the
Santa Fe Trail see Dictionary of Amenran History, rev.
ed., s.v. "Santa Fe" by Francis Borgia Sleek and
"Santa Fe Trail" bv Bliss Iselv.
466
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
ry later, to meet Manhattan Project
goals, the Army acquired this same
ranch as the location for one of its
atomic reservations.^ (See Map 5.)
Planning
On a wintry day in early November
1942, a small group of Army engineer
officers visited the Los Alamos Ranch
School. Of the several possible sites
they had examined, this one im-
pressed them most as nearly meeting
all their criteria for security, safety,
ease of acquisition, and conversion
into a scientific research and develop-
ment community. There was a large
enough area cleared of timber to
permit an immediate start on the
erection of technical structures and
the buildings of the school would
provide more than sufficient housing
for the relatively small group of scien-
tists who would staff the bomb labo-
ratory. Following Groves and Oppen-
hcimer's inspection and approval a
few days later, the War Department
notified the owners of the school that
the government was starting condem-
nation proceedings to acquire the
property and that they had until mid-
February 1943 to vacate, time enough
for members of the small student
body to complete their academic
studies for the year.^
Weeks before the students finally
departed from the Hill, plans to
secure a construction contractor and.
^ "The First 20 \'ears at Los Alamos, January
1943-January 1963," LiSL News 5, no. 1 (Jan 63):
8-13.
^ See Ch. X\' for details on acquisition of the Los
Alamos site. See also "First 20 Years at Los
Alamos," pp. 12-13, and James W. Kunetka, City of
Fire: Los Alamos and the Atomic Age, 19-(3-1945, rev.
ed. (Albuquerque: University of New Mexico Press,
1979). pp. 10-16.
as Stone and Webster's replacement,
a new architect-engineer for the Los
Alamos community development pro-
gram were already under way. The
Albuquerque District surveyed con-
struction firms in the region and, as
the construction contractor, chose the
M. M. Sundt Company of Tucson, Ar-
izona, which was just completing a
job for the Army at a camp near Las
Vegas, New Mexico. The firm ap-
peared attractive for the task not only
because it had available nearby equip-
ment and manpower but also be-
cause, unlike many construction com-
panies, it had its own fleet of trucks
and operated its own plumbing, elec-
trical, and painting departments. This
meant that Sundt would have to
employ fewer subcontractors, a plus
from the standpoint of project
security.
When the Army signed its lump-
sum contract with Sundt in mid-De-
cember, company representatives
were already in Santa Fe securing
office quarters and initiating procure-
ment for workmen and building mate-
rials. These expeditious efforts per-
mitted Sundt crews to begin clearing
the site by the end of the month,
when the Army also completed nego-
tiations with Willard C. Kruger and
Associates of Santa Fe to be the new
architect-engineer. Kruger's location
near the newly established Santa Fe
Engineers Office and the area office
of the construction contractor facili-
tated the firm's ability to cope
promptly with changes and expan-
sions in the communitv.*
■» MDH, Bk. 8, Vol. 1, "General," p. 4.1-4.2, 5.1-
5.2, App. D12 (Major Contracts Supervised by Albu-
querque Dist to Mar 44), and Vol. 2, "Technical,"
Continued
THE ATOMIC COMML NHIES IN NEW MEXICO
467
I VFICAL Building at the Los Alamos Ranch School for Boys
Kruger used Stone and Webster's
original plans for Los Alamos, which
incorporated the ideas and specifica-
tions of Oppenheimer and other
project scientists, as the basis of its
initial blueprints for the community.
In these early plans, drawn up in late
1942 and approved by the prime con-
tractor, the University of California,
the fifty-four school buildings formed
the nucleus of the community, with
the new houses, dormitories, bar-
racks, service, and other buildings of
the nontechnical area located to the
northeast and with the installations of
the technical area, enclosed by a high
chain link fence, located to the south
pp. I.5-L6, DASA; "Firsi 20 Years at Los Alamos."
p. 36; Fine and Remington, Corps of Engineers: Con-
slructwn. p. 694.
along the precipitous rim of Jemez
Canyon. But these early plans consti-
tuted only a rudimentary beginning
for construction on the Hill. Further
planning in early 1943 by Groves and
scientific leaders of the project, espe-
cially Oppenheimer and James B.
Conant, revealed that the bomb de-
velopment program was going to be a
far larger enterprise than originally
anticipated and that precise answers
to questions concerning the size of
the laboratory, its staff, technical fa-
cilities, and supporting community
would become available only after a
great deal more study and research.^
^MDH-, Bk. 8. \oL 1. Apps. A6 (Post Plan) and
A7 (Tech Area Plot Map), and \'ol. 2, p. III. 47,
D.AS.\; .Second Memo on Los .Alamos Proj (by J. H.
Continued
468
MANHAl IAN: THE ARMY AND THE Al OMIC BOMB
As at Clinton and Hanford, there
was the same urgency at Los Alamos
to complete facilities in the shortest
possible time and at the lowest cost in
terms of manpower and critical mate-
rials. Hence, wherever feasible, design
and layout procedures were stream-
lined. On nontechnical community
structures (housing, service, and rec-
reational buildings), the Albuquerque
District submitted requirements di-
rectly to Kruger without going
through the University of California.
Kruger then outlined the job specifi-
cations to each subcontractor, who in
turn provided a cost estimate. Once
Kruger and the subcontractor had
agreed on a reasonable cost, the pro-
posal was submitted in the form of a
lump-sum contract to the Albuquer-
que District. The latter office re-
viewed the document and calculated
the profit made, and if this appeared
excessive, it required the subcontrac-
tor to return the overage.^
Plans for the New Mexico establish-
ment followed the general pattern of
those for Clinton and Hanford: highly
tentative and subject to repeated and
drastic vicissitudes. Nevertheless, on
one project requirement — that of se-
curity— Manhattan remained vigilantly
uncompromising. Because the need
for secrecy was so crucial, Los
Alamos, unlike Clinton and Hanford,
was planned as a military post, with a
Stevenson, Proj Mgi), Admin Files, Gen Corresp,
322 (Los Alamos), MDR; "First 20 Years at Los
Alamos," pp. 15-19 (photographs of terrain features
and buildings); Rpt, sub: Complications of the Los
Alamos Proj, 12 Nov 46, Admin Files, Gen Corresp,
322 (Los Alamos), MDR. Daniel Lang provides a de-
tailed description of Los Alamos as he observed it
in the immediate postwar period (1945-48) in his
Early Tales of the Atomic Age (New \'ork; Doublcday
and Co., 1948), pp. 208-10.
«MDH, Bk. 8, Vol. 1, pp. 4.2-4.3 and 5.1, DASA.
military commander and staff and var-
ious military units to perform post en-
gineer and security functions, tor the
same reason, project planners decid-
ed to provide on-site accommodations
and community services (commissary,
medical care, and recreation) for all
military personnel and civilian scien-
tists and technicians, and, in many
cases, their families as well, because
of their respective post functions and
secret job assignments. As nontechni-
cal civilian employees working in un-
classified jobs did not pose a security
risk, Manhattan recommended that
they reside in the neighboring small
towns and use Army bus transporta-
tion to commute to and from the job.
They would, however, have access to
on-site housing based on its availabil-
ity and their family need."^
Construction and Operation
Because of the unpredictable ex-
pansion in the size of the bomb de-
velopment program, community con-
struction tended to be an open-ended
process, with each new influx of civil-
ian and military personnel requiring
additional facilities. Housing consti-
tuted by far the largest part of com-
munity construction, reflecting a rap-
idly expanding population. From an
estimated fifteen hundred persons in
January 1943, comprised mostly of
Sundt construction employees, the
population increased to almost thirty-
five hundred a year later, although
most Sundt personnel had departed,
and approached fifty-seven hundred
at the beginning of 1945.®
'Ibid., pp. 5.1-6.3, DASA.
* All statistics on the population of Los Alamos in
wartime represent rough estimates, because project
THE AIOMIC (X)MMl'NHIES IN NEW MEXICO
469
With {\)c complclion of ihc fust
major phase of conmuinily construc-
tion in the fall of 1943, the Sundt
Company withdrew its personnel and
equipment from the site and the post
commander prepared to take over
primary responsibility for community
maintenance as well as any further
minor construction. General Groves
had been concerned about having an
outside contractor and the Albuquer-
que District involved in the bomb
program and he now took steps to
tighten security. In early 1944, the
Manhattan District assumed full re-
sponsibility for supervising all further
construction. Lt. Col. Whitney Ash-
bridge, the post commander, recruit-
ed additional carpenters, plumbers,
and .other workers and assigned them
to the Operations Division, which he
reorganized into two sections: one for
community maintenance and con-
struction, the other for technical area
work. Work crews from the division,
often comprised of both civilians and
enlisted men from the Provisional En-
gineer Detachment (PED), undertook
many minor construction jobs ordi-
narily carried out by construction
contractors.
Division crews, however, could not
handle all the work, and occasionally
outside contractors were brought in
through the Albuquerque District. An
increase in the number of outside
contractors employed by Manhattan
occurred in March 1944, when both
the technical and community facilities
officials, for reasons of security, did nol undertake
an ofTicial census until April 1946. However, some
indication of population trends can be derived from
payroll figures maintained for the various categories
of workers employed at I.os Alamos. See ibid., p.
7.15 and App. B7 (Payroll C>ensus Graph, Dec 42-
Dec 46), DASA.
had to be expanded substantially. Ehe
Army once again had to risk calling
upon the Albucjuerque District to
begin a search for additional contrac-
tors. 4his time two El Paso, I'exas,
firms were chosen: J. E. Morgan and
Sons, to install prefabricated apart-
ment buildings; and Robert E.
McKee, to undertake the new phase
of technical construction.^
The unpredictable expansion of the
bomb program consistently outran
available housing. With on-site hous-
ing still under construction in the
spring of 1943, the first laboratory
staff members had to stay at guest
ranches in the vicinity of the Hill. By
June, these accommodations were so
overtaxed by the influx of technical
personnel that the Army had to ac-
quire the National Park Service's Fri-
joles Lodge in Bandelier National
Monument, 14 miles south of Los
Alamos. From June to October 1943
and again for a brief period in July-
August 1944, overflow laboratory per-
sonnel resided at the Frijoles Canyon
lodgings amid the ruins of ancient
Indian dwellings. In 1944 and 1945,
the unavailability of sufficient dormi-
tory housing for married enlisted men
of the Special Engineer Detachment
(SED) and the strict enforcement of
security regulations that forbade
bringing wives to live in nearby civil-
ian communities severely strained the
morale of many junior scientists and
technicians. The continuing shortage
of family-type facilities resulted not
only from the unexpectedly rapid in-
crease in personnel and the wartime
9 Ibid., pp. 5.4-5.9 and Apps. B3-B4 (Org Charts,
4 Feb 44 and 1 Feb 45) and D12, DA.SA; Fine and
Remington, Corps of Engineers: Construction, pp. 697-
98.
470
MANHATTAN: THK ARMY AND IHE ATOMIC BOMB
KOIIR-FAMIIA APAKIMKN 1 I NHS Al LoS Al.AMOS
limitations on labor and materials but
also from the deliberate policy of
holding to a minimum the construc-
tion of family housing, except where
it contributed to recruiting personnel
and security. The Army persisted in
this policy because the addition of
each new family placed further strain
upon the limited number of service
personnel available, the supply of
water, electricity, and fuel, the sewer-
age system, and other community
services. ^°
'°MDH. Bk. 8. \()1 I, pp. BLMi.a, and Vol. 2,
pp. 1.9. III. 19. IX. 11. DASA; 'First 20 Years at Los
Alamos." pp. 16-17; Dorothv McKibbin, "109 East
Palace Avenue," L4SL Xeu's 5, no. 14 (Jun 63): 6.
Mrs. McKibbin was in charge of Los Alamos' Santa
Fe ofTice. located at the above-mentioned address,
which served as the first point of contact for most
incoming visitors and luwK assigned personnel.
Housing units at Los Alamos com-
prised numerous conventional
houses, apartments, and duplexes,
which the Army felt were of particular
value for recruiting essential person-
nel and for ensuring security. There
were also winterized hutments. Pacific
and National Hut apartments, govern-
ment- and privately owned trailers,
and sixteen remodeled ranch houses
at various places on the reservation.
Eventually the combined capacity of
these various types of housing was
sufficient to accommodate more than
six hundred families.
Single individuals resided in bar-
racks or dormitories, with the best-
equipped dormitories reserved for
unmarried scientific personnel. Fire-
men, janitors, hospital attendants,
and other civilian service personnel
THE ATOMIC COMMUNHIES IN NEW MEXICO
471
Military Mess Facility at Los Alamos
occupied more cheaply built units.
Most enlisted men had quarters in
theater of operations-type barracks
and enlisted women in modified
mobilization-style units. Construction
workers occupied temporary housing
built by their employers; Sundt crews
resided in more than 100 hutments,
subsequently used to house other
construction workers after the Tucson
contractor had completed its phase of
the work, and McKee crews lived in a
specially built 93-unit dormitory. Visi-
tors to the site and some senior scien-
tific personnel were given quarters in
the well-built stone-and-log structures
of the Ranch School. ^^
'1 MDH, Bk. H. \()1. 1. pp. 6.2-6.5. DASA; I.ASI.,
Per.sonncl Dcpt, Housing Manual for Laboratory
PLmplovees and Supervisors, pp. 21-24: Barbara
As an antidote to the admittedly
unsatisfactory housing conditions, the
isolation of the site, and the stringent
security regulations, the Army devot-
ed considerable effort to providing
Los Alamos residents with efficient,
low-cost, and attractive food and serv-
ice facilities. Meals were available to
civilians at cost in several convenient-
ly located messes and at Fuller
Lodge — the latter intended primarily
for guests and transients. Army per-
sonnel ate at regular military messes.
Limited food service was available in
the post exchanges. In March 1945,
the post opened a new cafeteria spe-
cifically designed and operated to im-
prove community morale. Open to
Storms, "Western Area," Thr Alom :^1 (Mar 66): 19-
23 and 36; Lang, Tnln of the Atomu Age. p. 207.
472
MANHAl IAN: THE ARMY AND THP: A lOMIC BOMB
Los Alamos Ranch Trading Post
everyone, it was better equipped, fur-
nished, and decorated than the regu-
lar messes and served a more elabo-
rate menu offered on an a la carte
basis at approximate cost.
Commissary facilities began oper-
ations in March 1943, with only Los
Alamos residents having privileges.
But experience demonstrated that the
majority of employees who lived off
the site had little opportunity to do
their shopping in nearby communities
because of commuting distances.
Consequently, the post commander
ordered extension of commissary
privileges to all who worked at the
reservation. One unusual commissary
service was check cashing for contrac-
tor employees, who, for security rea-
sons, were not permitted to maintain
bank accounts in Santa Fe or other
communities adjacent to the site. An-
other ameliorative measure, as of
August 1944, was the sale of many
additional items not ordinarily au-
thorized under Army regulations.^^
Supplementing commissary service
were the post exchange facilities,
which were open to everyone on the
reservation. The Army set up the first
"trading post" in a small log building
of the Ranch School in early 1943,
but eventually opened outlets in sev-
eral other locations, including one
'2MI)H, Bk. 8, \()l 1, pp. (i.9-(i.l4. DASA;
Memo, Ashbiidge to 1st Ll William Rice (Commis-
sai\ Oil, I.os Alamos), 12 Aug 44, and Memo for
File, Ashbridge, 12 Aug 44, copies in ibid., App.
D24, DASA; Ltr, Col Gerald R. Tyler (CO, Los
Alamos) to Dist Kngr, Attn.: Col F.Imer Y.. Kiikpat-
ri(k, Jr. (Dep Dist Engr), sub: Request for Authoritv
to Cash Checks at Commissaiv, and 1st Ind, Kirk-
paiiuk to CO, U.S. Engrs Office, Santa Fe, N.Mex.,
both 12 Feb 45, copies in ibid., App. D27, DASA;
I.ASF, Housing Manual for Laboratory Employees
and Supervisors, p. 23.
1 HE AIOMIC COMMLNiriES IN NEW MEXICX)
473
Street Scene in Los Alamos. The fence separates the techuual uistallattons from the
residential area.
near the entrance of the technical
area and, as of June 1944, one con-
venient to the quarters of the SED
unit. The Army, however, discour-
aged the practice extensively em-
ployed at Oak Ridge, Hanford, and
Richland of granting commercial con-
cessions to outside civilian business-
men. There were a few exceptions.
The post exchange manager let con-
tracts for a cleaning and pressing
shop and a combination garage and
filling station. Whenever feasible, the
Army employed civilians to operate
the various service establishments.
But, because of the labor scarcity, it
had to supplement civilian staffs with
Women's Army C>orps (WAC-) mem-
bers and PED enlisted men.^^
Other community services were
comparable to those found at most
zone-of-interior military posts. Mili-
tary and civilian crews under the di-
rection of the post engineer officer
maintained and repaired all buildings
and were capable of undertaking new
construction on a limited scale. Other
post crews tended furnaces in winter,
delivered ice in summer, and col-
lected the community's garbage and
trash. The post motor pool operated
the community's transportation
system, which was completely de-
pendent upon motor vehicles. It pro-
\ided a free bus service for the hun-
dreds of commuting employees from
nearby towns and a trucking service
'3 MDH, Bk. 8, \()1. 1. pp. (■).! (■)-(■). 20 aiui App. Wi
(Org Chart, I'.S. Kngrs Oifuc-. Saiit.i Fc, N.VUx..
5 Feb 44), DAS A.
474
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Pupils at the Los Alamos Communit\' School viewing thejemez Mountains
to the nearest railheads in Santa Fe
and Albuquerque.^^
Management
The local government of the Los
Alamos community, which, legally
speaking, was a federal reservation
within the state of New Mexico, func-
tioned through a composite of civilian
and military institutions. Although ci-
vilian Sundt Company guards per-
formed internal security functions in
the earliest months of post operation,
the Army provided the community
with most of its protective and law
enforcement services. A Military
Police (MP) Detachment, assigned in
late April 1943 from the '4817th
••* Ibid., pp. 6.22-6.29, DAS.\; 'First 20 Years at
Los Alamos." pp. 18-20; List, sub: MD OtTs on
Duty at Los Alamos and Lheir Duties, 6 May 44,
Incl to Memo, Ashbridge to Groves, 14 Jun 44,
Admin Files, Gen Corresp, 201 (Gen), MDR.
Service Command Unit, 8th Service
Command, operated under the post
provost marshal's direction and was
responsible for guarding all points of
entry and patrolling the perimeters of
both the technical area and the reser-
vation itselL Fire protection also
began as a civilian function, first pro-
vided by Sundt Company employees
and later by its construction crews
quartered on the post. Then in Octo-
ber, the Army decided to save scarce
housing by replacing civilian firemen
with enlisted PED soldiers, who could
live in the fire station. They retained
only a civilian chief ^^
'^ See Ch. XV for a further discussion of the legal
status of Los Alamos. See also copies of the corre-
spondence between the Secretary of War and the
governor of New Mexico in MDH, Bk. 8, Vol. 1,
Apps. D9, DASA. Because Los Alamos was a federal
reservation, oflkials of New Mexico held that
people residing there were not legal residents of the
(;orHinued
THE ATOMIC COMMl MI lES IN NEW MEXICO
47J
Civil law administration was the re-
sponsibility of a town council, com-
prised of six members whom the resi-
dents elected to serve a six-month
term of office. Operating at first
under a joint directive issued by Ash-
bridge and Oppenheimer in August
1943, the council ultimately func-
tioned under a constitution approved
by the post commander in April 1944.
With this authority the council had ju-
risdiction over enforcement of local
civil regulations, but it had to depend
upon the residents' voluntary compli-
ance because there was no legally
constituted civil court on post to
which cases might be remanded. The
council, which met regularly with rep-
resentatives of the laboratory and the
post commander, also submitted rec-
ommendations on community affairs
and devoted considerable time to
problems of community welfare. It
gave particular attention to measures
that would improve living conditions,
including establishment and oper-
ation of self-help laundries, more
convenient hours of operation at post
exchanges and messes, provision of
extra storage and living space in
apartments, reduction in rental rates,
and development of children's recre-
ational facilities. Viewing the work of
the council in retrospect. General
Groves recalls that, though "it was a
thorn in the side of the station com-
mander . . . , on the whole it was a
valuable adjunct, for it not only im-
proved the morale of the communitv.
state. Hence, in the presidential election of 1944,
they could vote only by absentee ballot. Neverthe-
less, New Mexico did require that I.os Alamos resi-
dents pav the state income tax. See ibid., pp. 6.33-
6.43 and 6.55, DAS.A.
but kept the post administration on
its toes." ^^
As operating contractor, the Uni-
versity of California had the responsi-
bility for the often difficult and deli-
cate task of administering civilian
housing — establishing rental rates and
other charges, determining housing
assignment quotas, and providing for
additional facilities. The university set
up an on-site housing office, where an
Army liaison officer maintained day-
to-day familiarity with developments
in this crucial area of community ad-
ministration. Following the guidance
of General Accounting Office regula-
tions, the university determined rates
in accordance with the annual salary
of the renter and then the district en-
gineer, in compliance with Orders B
issued by the War Department in
1943, reviewed and approved these
rates. The university established
charges for utilities on the basis of a
study of rates assessed tenants in
other projects where the government
furnished housing and then submitted
its rate schedule to the District for ap-
proval. Although an investigation in
the spring of 1944 revealed that these
charges were far less than actual
costs, the Army decided not to in-
crease them and further aggravate an
already restive civilian community. ^^
No effort received more careful at-
tention and wider support from the
highly educated scientists and techni-
cians than establishment of a free
public school system. In the spring of
'^Quotation from (iroves. Xow It Can Bf Told, p.
164. See also MDH, Bk. 8, Vol. I, pp. 6.59-6.60,
DASA.
"MDH. Bk. 8, \()1. 1, pp. 6.5-6.9 and Apps. CI
(Utilitv Charjres at I.os Alamos), IIASA; I.tr. Ash-
Continucd
476
MANHAII AN: IHE ARMY AND IHE A lOMIC BOMB
1943, because existing school facili-
ties were inadequate to accommodate
a burgeoning school-age population,
the post commander and laboratory
director acted jointly to appoint a six-
man school committee (later, a per-
manent eight-man school board) to
supervise the construction of a new
school building, plan a curriculum,
and employ a teaching staff. As a con-
sultant, the committee hired Walter
W. Cook, professor of education at
the University of Minnesota. Assisted
by B. E. Brazier, the laboratory's con-
struction and maintenance division
chief. Cook developed plans for a
combined elementary and high school
building incorporating all the newest
features in school construction. The
school opened in the fall with 140
pupils, and enrollment by 1945 rose
to more than 300. Later, a partially
self-supporting nursery school, pri-
marily intended for the preschool age
children of working mothers, supple-
mented the regular school system.
Except for the nursery school, attend-
ance for Los Alamos residents was
completely free of charge, with the
government paying all expenses (di-
rectly for maintenance and, through
the University of California contract,
for teachers' salaries). ^^
bridge to Dist Engr, sub: Rent Reduction for Impro-
vised Qiiarlers, 7 Jan 44, copy in ibid., App. D18,
DASA; I.tr, Lt Col J. M. Harman (CO, Los Alamos)
to Dist Engr. sub: Establishment of Rates for Qiiar-
ters for the Operating Contractors' Employees on
the Zia (Los Alamos) Proj, 10 Eeb 43, copy in ibid.,
App. D20, DASA; Ltr, Tyler (CO, Los Alamos) to
Oppenheimer, Attn.: Charles D. Shane, sub: Rental
Rates for Familv Qiiarters, 10 Mar 45, copy in ibid.,
App. D22, DASA; WD Orders B, 15 Jan 43; Second
Memo on the Los Alamos Proj (by Stevenson, Proj
Mgr), MDR.
'»MDH, Bk. 8, Vol. 1, pp. 6.65-6.67 and Apps.
C2 (Chart, Total Cost to Govt of Maintainmg
Schools for Los Alamos During School Years, 1945-
POr military personnel at Los
Alamos, the Army provided the stand-
ard information and education pro-
gram authorized for military posts.
The post chaplain, Capt. Mathew
Imrie, who also served as the infor-
mation and education officer, advised
MP, WAC, PED, SED, and other unit
commanders on educational matters,
arranged regular night school cours-
es, and administered the U.S. Armed
Forces Institute correspondence
course program. ^^
Strong support for the best educa-
tional facilities was at least partially
motivated by continuing concern over
community morale. Not only did it
eliminate one dissatisfaction, but
after-hours educational opportunities
were a well-tested means for engaging
servicemen in a personally satisfying
activity during nonduty hours. The
causes for declining morale at Los
Alamos in 1944 and early 1945 were
many. Such irritants as censorship of
mail, alleged and real inequities in
wages, differences in social back-
ground, restrictions on access to serv-
ice and recreational facilities, and
shortages of housing tended to be
magnified. Some of these factors, too,
enhanced the conflicts that often arise
between civilians and the military, es-
pecially where, as at Los Alamos,
most civilian scientists and technicians
came from an academic and social
background quite different from that
of manv of the servicemen. ^^
46 and 1946-47) and D13 (Data on Misc Post
Bldgs), and Vol. 2, pp. III.9-III.10, DASA; Memo,
Oppenheimer to Groves, sub: Rpt of Spec Review-
ing Committee on Los Alamos Proj, 27 May 43,
Admin Files, Gen C.orresp, 600.12 (Development),
MDR; (Proves, Xozv It Can Be Told. p. 166.
'HIDH, Bk. 8. Vol. 1, pp. 6.56-6.57, DASA.
2oibid., Vol. 2, pp. III. 11, III.13-IIL14, III. 19-
Continued
IHK AIOMIC COMMIMI II .S IN NKW MKXICX)
477
lypical of morale problems was a
custodial employee's complaint of
racial discrimination (in this case,
against a person of Spanish ancestry)
in assignment of housing. The em-
ployee wrote to both of New Mexico's
I'nited States senators that post hous-
ing authorities had forced him to
move out of an apartment that he had
occupied for some time into inferior
quarters, in order to make room for
newly arrived scientific and technical
personnel. The Army informed the
two senators that the District had
built the housing in question for oc-
cupancv by highly paid staff members
of the laboratory. Pending arrival of
this professional personnel in Los
Alamos, housing officials had permit-
ted custodial employees to live in it
on a temporary basis. Now these em-
ployees were being reassigned, with-
out regard to race or nationality, to
other quarters that were in every re-
spect adequate for their needs. To
make certain that the rather large
number of other Spanish-Americans
living on the post fully understood
the reasons for reassignment of hous-
ing units. Colonel Ashbridge met with
representatives of the group, assur-
ing them that the Army was continu-
ing its efforts to relieve the housing
shortage. ^^
To check the erosion of morale, the
Armv, through its Special Services or-
111.22, DASA; Rpt, sub; ClomplKations oi l.os
Alamos Proj, 12 Nov 4("). MDR; (woves, Xmv It Can
Br Told. pp. 164-66 and l()8-69.
^' See corrcspondeiKc in Admin Files. Cicn (^or-
resp, 330.14 (l.os Alamos). MDR tspcciallv I.ir, Sen
Carl A. Hatch (N.Mcx.) to Sc-(\ War, 6 Mar 44, and
attached suggested lepK prepared in (iroves's
olFice; I.tr, Col R. R. Nevland (I)iv Kngr, Dallas,
lex.) to .Sen Dennis Chavez (N.Mex.), 18 Mar 44;
and Memo, Ashbridge to (iroves, 20 Mar 44.
gani/ation on the post, pursued a vig-
orous program of countermeasures in
other areas of community activity.
Special Services greatly expanded a
limited civilian program, begun by a
former teacher of the Ranch School.
It added tennis courts, softball fields,
a golf course, and a bowling alley; as-
sisted residents in taking advantage of
the unexcelled opportunities for out-
door recreation (camj)ing, hiking,
skiing, and mountain climbing); pro-
vided motion pictures and other pro-
grams in the two post theaters; and
encouraged residents to sponsor such
activities as lectures, dances, art
shows, and monthlv musicals. The
Army also encouraged residents to
organize and participate in those
typical groups found in most Amer-
ican communities — Boy Scouts, a
chess club, a little theater group,
and so on — and assigned the post
chaplain responsibility for arrang-
ing religious services after the part-
time services by priests and ministers
from Santa Fe had proved generally
unsatisfactory.^^
Given the inherent character of
many of the factors that adversely af-
fected morale, the Army, of course,
could never hope to find completely
satisfactory solutions for all the prob-
lems of the Los Alamos community.
Nevertheless, it was largely successful
in preventing any of these factors
from seriously disrupting the life of
the operating community and thereby
impeding or dela\ing development of
the atomic bomb.
"MDH. Bk. 8, \ol. 1, pp. 6.5,5-6.56. 6.57-6..58,
App. D12. DA.S,\: (;r<)ves Diaiv, 24 Jul 44, I.RC;.
478
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Trinity: The Base Camp
The establishment of the Trinity
base camp in the Jornada del Muerto
valley east of the Rio Grande in New
Mexico brought suddenly, albeit for a
very brief time, a great influx of men
and machines to a region hitherto
home for only a few hardy farmers
and ranchers. ^^ Unlike the residents
of the temporary Hanford construc-
tion camp in the sagebrush wilderness
west of the Columbia River in Wash-
ington State, the men of Trinity were
highly trained scientists and techni-
cians from the parent community of
Los Alamos who had trekked from
the Pajarito Plateau to the desolate
Jornada to complete their unique
military-scientific mission: the test of
an atomic device. Dedicated in their
commitment to science, they now
turned to preparing the Trinity site
for this dramatic event, which, in an
instant, would alter, decisively, the
course of human history.
Flanked by low-lying mountains
that added a certain primitive beauty
to the otherwise drab sameness of the
seemingly endless desert landscape,
the Trinity site comprised an 18- by
24-mile tract of land in the northwest
corner of the Jornada, which itself
formed the northern portion of the
huge Alamogordo Army Air Field
{Map 6). In the summer of 1944, Ken-
neth Bainbridge, the Harvard physi-
cist assigned by Oppenheimer to
oversee preparations for the bomb
test and the base camp, chose this ex-
panse of New Mexico desert over sev-
eral other locations because he felt it
^'Section on the Trinity site based on MDH, Bk.
8, Vol. 1, pp. 6.30 and 7.10-7.11, and Vol. 2, pp.
XV11I.2-XVIII.4, DASA; Lamont, Day of Tn,u!\. pp.
73-76 and 94-95; Kunetka, City of Fire. pp. 14.5-49.
best met the criteria established by
Los Alamos scientists: flat terrain for
minimizing extraneous blast effects
and for construction of roads and
communications lines; sufficient dis-
tance from populated areas but close
enough to Los Alamos to avoid an
undue loss of time in travel by labora-
tory staff members; clear and sunny
weather, on the average, that would
permit the extensive collection of op-
tical data; and convenience to good
transportation by rail (main line of
the Atchison, Topeka and Santa Fe
Railroad) and by highway (U.S. 85 and
380). 24
Beginning in the fall, Bainbridge
and his Project Trinity group worked
closely with Capt. Samuel P. Davalos,
post engineer at Los Alamos in
charge of the Operations Division's
Technical Area Section, to develop
plans for a base camp at the Trinity
site, to include a bomb test area with
technical facilities and a campsite that
would serve the needs of at least 160
men. Meanwhile, to expedite con-
struction at the camp, the Army ar-
ranged a contract with a Lubbock,
Texas, construction firm, which soon
dispatched workmen to Trinity to
build barracks, officers quarters, a
mess hall, and other support facilities.
At the end of December, when these
basic facilities were completed, a
^■•The choice of the Trinity site came after Bain-
bridge's group had considered seven other possible
locations for the test: three in New Mexico (the Tu-
larosa valley northwest of the town of Alamogordo,
the lava region south of Grants, and the plateau
southwest of Cuba and northeast of Thoreau); two
in California (the Army's desert training area in the
southeast part of the state, near Rice, and San Nico-
las Island in the Pacific Ocean, southwest of Los An-
geles); one in Texas (the sandbars off the south
coast); and one in Colorado (the San Luis Vallev
region near the Great Sand l^unes National Monu-
ment). See MI^H, Bk. 8, Vol. 2, p. X\in.2, DASA.
TRINITY TEST SITE
1945
Contour interval in feet
MILES
MAP 6
480
MANHAIIAN: I HE ARMY AND THE AIOMIC BOMB
Trinity Base Camp
small MP detachment under the com-
mand of Lt. Harold C. Bush arrived
from Los Alamos to provide securitv
for the satellite community. This van-
guard was soon followed by a much
larger group of scientists, technicians,
medics, civil service personnel, and
construction workers.
As 1945 unfolded, the activity of
the more than two hundred camp
residents intensified in a concerted
effort to ready all technical facilities
for the bomb test, tentatively sched-
uled for early summer. Under the su-
pervision of the Project Trinity
group, civilian construction crews —
aided by additional construction per-
sonnel brought down from Los
Alamos — built warehouses; repair
shops; bomb-proof structures; an ex-
plosives magazine; a stockroom to
house equipment shipped from the
Hill; an unloading platform on the
railroad siding at Pope, which was
some 25 miles west of the site; a com-
missary; and more barracks. 4 hey also
constructed more than 20 miles of
blacktopped roads for a fleet of some
one hundred motor vehicles, erected
200 miles of telephone wire, and in-
stalled electric water pumps and port-
able generators.
As at Los Alamos, sustaining com-
munity morale among the residents of
I rinity was a continuing problem. Be-
cause of strict security requirements,
no one could leave the base camp
except on official missions. And as
the time for the test approached, in-
creasingly long hours of work under
conditions of extreme heat and expo-
sure to a variety of poisonous reptiles
THE AlOMIC COMMIM riES IN NEW MEXICO
481
and insects added to the stress, strain,
and fatigue. Hence, project leaders at
Trinity made a special effort to supplv
good food, reasonably comfortable
cjuarters, and a variety of recreational
sports and activities. Lieutenant Bush,
in particular, took a personal interest
in improving morale in the communi-
t\. He assumed the additional duty of
making certain that adec^uate housing
and feeding facilities were available
for the expanding population, and he
also provided organized athletics,
local hunting trips, a game room, and
nightly movies. The success of these
measures is evidenced by the fact
that, by mid-summer 1945, the essen-
tial technical facilities at Trinity were
all ready for the crucial test of man-
kind's first atomic explosion.
While many times in the past the
Army had to establish communities
for special and unusual purposes in
remote and often inhospitable places,
nothing had quite prepared it for Los
Alamos and Irinity. For a number of
reasons, the parent community and its
satellite were unicjue in the American
experience: They assembled, for the
first time, a small army c^f scientists
and technicians in a central laboratory
to achieve a single objective; they iso-
lated this group for many months
under difficult living conditions and
grueling work schedules; iind they
functioned as a military reservation in
compliance with strict security regula-
tions. Ihese circumstances inevitably
produced some serious stresses and
strains on the fabric of community life
for the civilians, who were unaccus-
tomed to the strong military direction
over their civic activities. But the
Army administration, working patient-
ly and skillfully through Oppenheimer
and other civilian leaders, clealt effec-
tively with each potentially disruptive
situation and succeeded in maintain-
ing a community environment that
sustained the large-scale collaborative
effort between the government and
science to design and test an atomic
weapon.
PART FOUR
THE BOMB
CHAPTER XXIV
The Los Alamos Weapon Program
The ultimate focus of the Manhat-
tan Project's manifold activities —
production of fissionable materials;
procurement of raw materials, man-
power, and process support; estab-
lishment of security, health, and
safety programs; and construction of
atomic communities — was the Los
Alamos Laboratory weapon program.
Actively under way by the spring of
1943, its major objectives, as General
Groves succinctly summarized them,
were "to carry on research and
experiment[s] necessary to the final
purification of the production materi-
al, its fabrication into suitable active
components, the combination of these
components into a fully developed
usable weapon, and to complete the
above in time to make effective use of
the weapon as soon as the necessary
amount of basic material has been
manufactured." ^
Planning Phase
Whether the Army could attain the
objectives of the Los Alamos weapon
program greatly depended on its abil-
' Quotation from I.tr, Ciroves to Oppenheimer,
26 Jan 44, Admin Piles, Gen Corresp, 600.12
(\-12), MDR. This description of the objectives of
the I.os Alamos program was a slightly amended
statement taken from MP(' Rpl, 21 Aug 43, OCX".
Files, Gen Corresp, MP Files, Fldr 2."i, I ab F, MDR.
ity to build and operate a major sci-
entific and engineering organization
at the isolated New Mexico site. Be-
cause the technical problems corollary
to bomb development were in many
respects unique, few precedents exist-
ed to guide Manhattan's military
and civilian scientific leaders in orga-
nizing and staffing the bomb labora-
tory. Hence, in carrying out these first
steps of the weapon program, they
adopted a generally pragmatic and ad
hoc approach.
Efforts of Groves and Oppenheimer
Because of the need for maximum
security, the atomic leaders concluded
that a normal Corps of Engineers ad-
ministrative organization — district en-
gineer supervision and control, area
engineer liaison and support — was
not feasible at Los Alamos. For this
reason. Groves himself assumed many
functions of both offices. Working
closely with the civilian head of the
bomb laboratory, J. Robert Oppen-
heimer, the Manhattan commander
not only exercised broad policy con-
trol over the weapon program but
also regularly intervened in day-to-
day operations, using telephone and
teletype means of communications
and frequent personal visits to main-
486
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
J. Robert Oppenheimer
tain surprisingly dose supervision.
Though his most important contact
was through Oppenheimer, he also
acted through the facilities of the Al-
buquerque District and the Los
Alamos military organization, as well
as through certain individual Army
and Navy liaison officers assigned to
the weapon program. With this ad-
ministrative arrangement in effect, the
role of the prime contractor, the Uni-
versity of California, was narrowly
confined to the details of business
management and procurement for the
laboratory.^
The personal leadership of Groves
and Oppenheimer was particularly
evident in some of their early admin-
istrative actions. In late January 1943,
^For a record of Groves's frequent personal inter-
ventions in Los Alamos operations see Groves
Diary, Nov 1942-Aug 1945, LRG. On the limited
role of the Universitv of California see MDH, Bk. 8,
Vol. 2, "Technical, ■ p. III.6, DASA; Interv, Fine,
Remington, and Ralph F. Weld with Groves, 1 1 Feb
64, CMH and OCEHD.
Groves selected Lt. Col. John M.
Harman, a Corps of Engineers officer
with a degree in civil engineering, as
the first commanding officer of the
Los Alamos post. At the same time,
he requested the War Department's
Services of Supply to furnish and
train military personnel for the post,
specifying allotment of military police,
engineer, and medical troops in time
for activation of Los Alamos as a
Class IV installation on 1 April 1943.
In consultation with James B. Conant,
he drew up a statement on the orga-
nization, function, and responsibilities
of the various elements that would be
located at Los Alamos, clearly delin-
eating the division of local responsi-
bilities between Oppenheimer, the
scientific director, and Colonel
Harman, the post commander. In
meetings with LIniversity of California
officials during February and March,
Groves worked out business and pro-
curement arrangements for Los
Alamos, including establishment, for
reasons of security, of the laboratory's
main procurement office in Los
Angeles.^
'^ Official Army Register, 1 Jan 44 (Barman's promo-
tion to colonel, effective 15 Feb 43); Groves Diary,
27 and 29 Jan, 1, 13, 22-25, 27 Feb, 8, 10-12, 14-
15 and 19 Mar 43, LRG; Ltr, Conant and Ciroves to
Oppenheimer, 25 Feb 43, copv in MDH. Bk. 8,
\'ol. 2, App. 1, DASA; Memos, Groves to CG SOS,
sub: Org and Assignment of Mil Org, 28 Jan and
22 Feb 43, Admin Files, Gen Corresp, 322 (Los
Alamos), MDR; Memo, Groves to CG SOS, sub: Ac-
tivation and Administration of Los Alamos,
27 Feb 43, Admin Files, Gen Corresp, 319.2 (Los
Alamos), MDR; MDH, Bk. 8, Vol. 1, "General," p.
7.1, \'ol. 2, pp. 1,5 and 1.9, and \'oI. 3, "Auxiliary
Activities," pp. 1.1-1.4 and App. Al, DASA. All
Army installations in the zone of interior were clas-
sified into four categories. Class IV installations
were technical in nature, such as government-owned
manufacturing plants, proving grounds, and the
Signal Corps Photographic Center in New York.
Conlinued
THE LOS ALAMOS WEAPON PROGRAM
487
Meanwhile, Oppenheimer was visit-
ing various universities and institu-
tions to enlist a cadre of scientists for
his laboratory. But the shortage of
scientific manpower, caused by the
special needs of other war projects,
and certain misgivings about the re-
strictive military character of the new
laboratory hindered his initial efforts.
To alleviate the scientists' doubts on
this score, Oppenheimer reassured
prospective recruits with a promise
from Conant and Groves that, for at
least the first phase of the program,
the laboratory would function on a
strictly civilian basis and that the staff
would not be militarized until actual
fabrication of a weapon began.
This approach improved Oppen-
heimer's recruiting efforts, especially
among scientists already engaged in
some aspect of atomic research. Start-
ing with members of Manhattan's
fast-neutron team — it included univer-
sity scientists from California (Berke-
ley), Minnesota, Wisconsin, Stanford,
and Purdue — Oppenheimer added
other scientists from the University of
Chicago's Metallurgical Laboratory,
among them the Hungarian-refugee
physicist Edward Teller, and from
Princeton University's now discontin-
ued program for isotopic separation
of uranium. In addition, he attracted
a scattering of scientists from other
universities — Rochester, Illinois, Co-
lumbia, and Iowa State — and from
other research organizations, includ-
ing the Geophysics Laboratory at the
Carnegie Institution, the Radiation
Laboratorv at the Massachusetts Insti-
I he duties of ronimanding generals of ser\ice com-
mands to Class IV installations were limited to spec-
ified services. See Millelt, Army Senncc Forres, pp.
314-15.
tute of Technology (MIT), the Army's
Ballistic Research Laboratory at Aber-
deen, Maryland, the National Bureau
of Standards, and the Westinghouse
Research Laboratories in Pittsburgh.'*
Oppenheimer and a skeleton staff
of scientists arrived at Los Alamos in
mid-March, despite the unfinished
state of the community and technical
facilities. In the ensuing months, how-
ever, there was a rapid increase in the
influx of personnel, both military and
civilian. By early June, Los Alamos
had more than 300 officer and enlist-
ed personnel and almost 460 civilians
(160 civil service employees and 300
scientists and technicians on the Uni-
versity of California payroll). Finally,
with sufficient personnel on hand,
both the new post commander, Lt.
Col. Whitney Ashbridge — Groves had
relieved Colonel Harman in May be-
cause of his inability to get along with
some of the scientific leaders — and
Oppenheimer turned to the many
problems of completing their respec-
tive organizations, especially those re-
lating to establishment of essential
coordination between the laboratory
and post administrations. To guide
them in this task, they had at least the
initial outlines of the unfolding
weapon program.^
"MDH, Bk. 8, Vol. 2, pp. 1. 7-1. 8 and App. 1,
DASA; Ltr, Conant to Groves. 26 Mar 43. OCG
Files, Gen Corresp, MP Files. Fldr 23, MDR; Smyth
Report, pp. 143-44 and 151; Hewlett and Anderson,
Xew World, p. 231.
*MDH, Bk. 8, Vol. 1, p. 7.2 and Apps. B2 (Org
(>hart, I.OS Alamos Post Administration, 5 Jun 43)
and B7 (Graph, Payroll Census Data of I.os Alamos,
1942-46), and Vol. 2, p. 111. DASA; Groves Diary,
29 May 43, LRG; Fine et al. Interv, II Feb 64,
CMH and OCEHD.
488
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
The April Conferences
Basic planning for developing and
testing an atomic weapon was the re-
sponsibility of a formal steering
board, set up by Oppenheimer in late
March. The board began its work in
early April and conducted a series of
orientation and planning conferences
throughout the month. During the
orientation conferences, held in the
first half of the month, the board pro-
vided the newly arriving laboratory
staff members with state-of-the-art in-
formation on atomic energy as a
weapon of war. During the planning
conferences, held in the last half of
the month, the board and a group of
scientific professionals reviewed the
nuclear physics background and es-
tablished research objectives for the
weapon program. Taking part is these
meetings were selected laboratory
staff members, visiting consultants
(Isidor I. Rabi from MIT's Radiation
Laboratory and Samuel K. Allison
and Enrico Fermi from the Metallur-
gical Laboratory), and members of a
special reviewing committee.^
The April conferences made it very
clear that what was known about the
explosibility of uranium and plutoni-
um and the design of an atomic
weapon was still highly theoretical.
The one area in which nuclear re-
search had progressed significantly
beyond the theoretical was in the
chemistry and metallurgy of uranium
and plutonium, and this had occurred
only because project scientists had
had to conduct extensive research
into this aspect of the two elements to
provide the necessary developmental
data for the fissionable materials pro-
duction processes at Clinton and
Hanford. In virtually every other
aspect essential to bomb develop-
ment— the experimental physics re-
search; the design, engineering, and
fabrication of bomb components; and
the assembly and testing of a
weapon — the essential work remained
to be accomplished. What then pre-
cisely was known in April 1943?'^
Theoretical research had estab-
lished that a single kilogram of U-235
has a potential energy release of up
to 17,000 tons of TNT. To achieve
this release of energy there had to be
a fast-neutron chain reaction, which
was theoretically possible in uranium,
plutonium, and certain other ele-
ments, but most feasible in active ma-
terial composed largely of the iso-
topes U-235 or Pu-239. A fast chain
reaction could occur only with the as-
sembly of a sufficient quantity of
active material in a configuration in
which natural leakage of neutrons did
not occur at so high a level that the
chain reaction was quenched. An
important step was to design a
mechanism that would provide the
proper configuration for attaining
criticality upon detonation. Theoreti-
cal research had already given consid-
erable attention to weapon design,
but the major problem still to be
solved was how to avoid prefission-
ing, or predetonation.
Addressing this problem, the con-
ferees reviewed and discussed several
«MDH, Bk. 8, Vol. 2. p. Ml, DASA; Hewlett and
Anderson, \'ew World, pp. 235-36.
' Discussion on the state of knowledge in April
1943 is based on MDH, Bk. 8, Vol. 2, pp. 1. 11-1.12,
DASA; Hewlett and Anderson, Xew World, pp. 232-
35; Rpt, Spec Reviewing Committee on Los Alamos
Proj, 10 May 43, Admin Files, Gen Corresp, 600.12
(Development), MDR; Memo, Tolman, sub: Los
Alamos Proj as of Mar 43, OSRD.
IHK LOS ALAMOS WEAPON PROGRAM
489
weapon assembly methods as possible
solutions, rhev immediately discount-
ed those methods that required either
too much active material (as in
the autocatalytic, or self-assembling,
method) or employment of an atomic
explosion to trigger fusion (as in a
thermonuclear bomb using a mass of
deuterium as the source of its
energy). In their estimation the most
feasible design was the gun-assembly
method, comprised of a cannon in
which an explosive-propelled projec-
tile containing one portion of active
material is shot through a second
target containing another portion of
material — thus achieving criticality.
The conferees were confident that
the gun-assembly method, if properly
engineered, would work with the iso-
tope L'-235, because of its properties;
however, they were considerably less
certain about its feasibility for Pu-
239, partly because the continued
scarcity of this isotope had limited the
amount of study that could be made
of its chemical and metallurgical
properties. Realizing the pile method
of producing Pu-239 made that sub-
stance most likely to be the active ma-
terial available in the largest quanti-
ties, the conferees were especially
anxious to find a design suitable for
its employment. Continued discus-
sions indicated that the implosion
concept offered the best promise of
success for plutonium. In a weapon of
this design, a quantitv of active mate-
rial in a subcritical shape would be
surrounded with layers of ordinary
explosive in such a way that, upon
detonation, the active material would
be compressed into a critical configu-
ration and the last chain reaction
would take place. Later research re-
vealed that the implosion design
would produce an effective atomic ex-
plosion using considerably less active
material than the gun method — a fact
especially appealing to Manhattan
leaders.
1 he April conferences provided
Groves, Oppenheimer, and other
Manhattan leaders with new insight
into what the immediate emphasis
and direction of the weapon program
must be by identifying the specific re-
search objectives that would produce
the necessary data not only for timely
design and fabrication of an atomic
weapon but also for an understanding
of its destructive effect. First, because
information on the amount of damage
that would result from an atomic blast
was almost totally lacking, the confer-
ees prescribed the collection of sys-
tematic data on the likely physical,
psychological, and mechanical effects
of an explosion of the magnitude of
an atomic bomb — realizing, of course,
that part of that data would have to
await an actual test of an atomic
device. Second, they outlined a sched-
ule of theoretical studies, experimen-
tal physics, and research in chemistry
and metallurgy that hopefully would
furnish the data needed to substanti-
ate what was already known concern-
ing the explosive potential of U-235
and Pu-239, to measure preciselv the
critical mass of each, and to prepare
the fissionable and other materials to
be used in an atomic weapon.
Reliable estimates by the scientists
in the uranium and plutonium pro-
duction programs at Clinton and
Hanford indicated that sufiicient fis-
sionable material ior an atomic
weapon would be available in about
two years. Would the Los Alamos
Laboratorv be able to fabricate a
490
MANHATTAN: THE ARMY AND THE AIOMIC BOMB
weapon within that time? Because the
April conferences had failed to pro-
vide, except in very limited terms,
concrete proposals for the organiza-
tion and work of an ordnance pro-
gram to carry out the actual design
and fabrication of the weapon, it was
to this subject that the special review-
ing committee particularly addressed
itself.^
Groves had established this com-
mittee in late March to ensure that
the program and organization of Los
Alamos were sound. Conant, acting as
Groves's scientific adviser in organiz-
ing the bomb project, had persuaded
the Manhattan chief of its appropri-
ateness by pointing out that scientists
were accustomed to having such com-
mittees at universities and research
institutions to help plan and evaluate
research projects. Conant and Rich-
ard C. Tolman, vice chairman of the
National Defense Research Commit-
tee (NDRC), had helped Groves select
the committee members: as chairman,
chemist Warren K. Lewis of MIT; en-
gineer Edwin L. Rose, who was direc-
tor of research for the Jones and
Lamson Machine Company; theoreti-
cal physicist John H. Van V'leck and
chemist E. Bright Wilson, Jr., both
from Harvard; and Tolman, who had
agreed to serve as secretary. It was an
experienced group, with all members
except Rose already well informed on
the atomic project. Lewis earlier had
served as chairman of both the heavy
water and DSM reassessment review-
ing committees; Wilson and Tolman
had been members of the heavy water
group; and Van Vleck had participat-
ed as far back as 1941 in reviews of
the uranium program.^
In its report issued on 10 May, the
special reviewing committee endorsed
most of the program discussed in the
April conferences, outlining what it
believed must be done in the way of
theoretical and experimental work on
the critical mass, efficiency of an ex-
plosion, and damage potentialities.
Placing primary emphasis on the ord-
nance and engineering aspects of
bomb development, the committee
recommended that the laboratory
expand the personnel and facilities
needed to design and fabricate a
weapon; it foresaw that the engineer-
ing program would more than double
the personnel of the laboratory and
require extensive facilities to test
weapon components, and also that ar-
rangements would have to be made
with the Army Air Forces for assist-
ance in bomb design and tests. The
committee further recommended that
the purification of Pu-239 "be made
a responsibility of the Los Alamos
group, not only because they must be
responsible for the correct function-
ing of the ultimate weapon, but also
because repurification will be a neces-
sary consequence of experimental
work done at the site." This activity,
hitherto centered at the Metallurgical
Laboratory, would require a sub-
8MDH, Bk 8. \„l. 2. pp. 111-112. DASA;
Groves Diaiv. :>,{) Apr and 1 Mav 4:^ l.RC,; Hewlett
and Anderson, Xexv World, pp. 2:^!^-:^6.
9 Memo, Maj Harry S. Traynor (MD HQ) to
Groves, 28 Apr 45, Admin Files, Gen Corresp, 334
(List of Committees), MDR. Ltr, Tolman to Groves,
20 Mar 43; Duplicate Ltrs, Groves to L.evvis, Rose,
Wilson, and \'an Vleck, 21 Mar 43; Rpt, Spec Re-
viewing C.ommittee on Los Alamos Proj, 10 Mav 43.
All in Admin Piles, Gen (Corresp, 600 12 (l^evelop-
ment), MDR. MPG Min, 30 Mar 43, 0C:G Files, (ien
Corresp, MP Files, Fldr 23, Tab A, MDR. Hevslelt
and Anderson, Sew World, pp. 36, 104. 110, 235-36.
See also Ch. W
THE LOS ALAMOS WEAPON PROGRAM
491
stantial increase in personnel and
facilities.
Consistent with its recommenda-
tions for expansion of the program,
the reviewing committee also pro-
posed appropriate organizational and
administrative changes. While it was
highly commendatory of Oppen-
heimer, it recommended that he
should be provided with more admin-
istrative assistance in his immediate
staff. It suggested appointing an asso-
ciate director, capable of taking over
direction of the project when Oppen-
heimer was absent, and establishing
an administrative office, headed by a
civilian who could maintain good
working relations with the military
administration.
1 he only aspect of the program's
administrative arrangements receiving
severe criticism was procurement.
While the Los Alamos procurement
office appeared to be functioning rea-
sonably efficiently, the key office in
Los Angeles, under Army direction
but manned largely by University of
California personnel, was following
procedures that were "unduly slow
and cumbersome." The delays could
not be allowed to continue, because
"not only the satisfactory progress of
the work, but also the morale of the
organization is dependent on an effi-
ciently functioning procurement
system." A partial solution, the com-
mittee suggested, would be to estab-
lish a procurement office in New York
for obtaining supplies and equipment
from firms in the eastern part of the
Ignited States. ^^
'" All quotations in discussion of coniinitlcc's rec-
ommendations from Rpt. Spec Reviewing (.onmiit-
tee on I.os Alamos Proj. 10 Ma\ 43. MDR. Ihe Mili-
tary Policy Committee heard an oral sununar\
(probably by Groves) of the principal recommenda-
Loboratory Administration
The recommendations of the April
conferences and the special reviewing
committee did not alter the basic plan
for operation of Los Alamos, as
worked out by Croves, Conant, and
Oppenheimer in early 1943, but en-
tailed a considerable expansion of the
weapon program and support person-
nel. With these new guidelines,
Groves and Oppenheimer set about
to complete the organization of the
laboratory and its administrative and
technical staffs.
Administrative Organization
A number of factors complicated
Oppenheimer's task of forming a lab-
oratory administration capable of
maintaining the required liaison with
the post administration, the necessary
communication with other Manhattan
District organizations, and effective
control over the increasingly complex
engineering activities of the bomb de-
velopment program. One was securi-
ty, particularly the requirement for
compartmentalization, which placed
severe limitations on communication
within the laboratory, between the
scientific and military organizations
and between the laboratory and out-
side agencies. Another was the acute
shortage of professional personnel
experienced in dealing with the broad
administrative problems of a research
laboratory. A third factor was the lack
of precedents to follow in organizing
a laboratory staff for a program that
ran the gamut from pure scientific re-
search to the actual performance of
tions of the report at its meeting on 5 Ma% 43. See
MPC Min, 5 Mav 43. MDR.
492
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
ordnance manufacturing operations.
The combined effect of these factors
was to place an unusually heavy ad-
ministrative burden on the laboratory
director and his immediate supervi-
sory staff. ^^
Both Groves and Oppenheimer had
been aware of the need for a strong
administrative group in the director's
office, but their efforts in that direc-
tion had not been very successful.
Their first choice for associate direc-
tor was physicist Edward U. Condon
from Westinghouse. Condon came in
April 1943, but left almost imme-
diately when he found himself in
complete disagreement with security
arrangements. As an experienced sci-
entific administrator, he perceived the
fundamental difficulty of trying to
maintain essential liaison within the
laboratory and with outside agencies
under the project's security system. ^^
With the strongly worded rec-
ommendations of the reviewing com-
mittee still very much on his mind,
Oppenheimer immediately sought to
replace Condon, as well as to fill the
other key positions on his administra-
tive staff. He was generally frustrated,
however, in his efforts to recruit pro-
fessionally trained, experienced scien-
tific administrators. They simply were
not available. He appointed a staff as-
sistant to carry on the absolutely es-
sential day-to-day liaison with the
post administration, pending recruit-
ment of a new associate director, but
i»MDH, Bk. 8, Vol. 2, pp. 1.33 and III.8-III.9,
DASA.
^^ Ltr, Condon to Oppenheimer, 26 Apr 43, In-
vestigation Files, Gen Corresp, Personnel Scty In-
vestigations (Condon), MDR; Groves, AW It Can Be
Told, pp. 154-55 (see reprint of 26 April letter on
pp. 429-32); MDH, Bk. 8, Vol. 2, pp. III.7-III.8,
DASA. See Ch. XI for more details on Condon's de-
parture from Los Alamos.
this position as originally conceived
was destined never to be filled. In
other key positions, he had to be sat-
isfied with either scientists with little
previous administrative experience or
administrators with appropriate expe-
rience in nonscientific fields (for ex-
ample, construction or business ad-
ministration). Two of his appointees
were physicists Dana P. Mitchell and
Arthur L. Hughes, both of whom had
no administrative experience in indus-
try. Mitchell, selected to be procure-
ment director, had been in charge of
procurement for the physics depart-
ment at Columbia University;
Hughes, selected to be personnel di-
rector, previously served as chairman
of the physics department at Wash-
ington University in St. Louis.
To assist Hughes with the ever-con-
stant manpower problem, Oppen-
heimer enlisted the services of Brown
University Dean Samuel T. Arnold,
who was serving as a technical per-
sonnel consultant for the project, to
recruit senior scientists and M. H.
Trytten of the National Roster of Sci-
entific and Specialized Personnel to
recruit junior scientists and techni-
cians. But the very nature of Los
Alamos personnel requirements
seemed to resist all attempts at a sat-
isfactory solution, and Groves became
convinced by the summer of 1944
that Hughes was not capable of solv-
ing the problem. The Manhattan
commander took immediate action:
He offered the position of personnel
chief to Dean Arnold. Arnold de-
murred but agreed to go on a tempo-
rary basis until a replacement could
be found. Eventually, on the basis of
Arnold's recommendation, Hughes
was replaced with astronomer Charles
THE LOS ALAMOS WEAPON PROGRAM
493
D. Shane, who had been working at
the Radiation Laboratory in Berkeley.
It was mid- 1944 before Oppen-
heimer had found suitable personnel
for all positions — an administrative
officer; heads of personnel, procure-
ment, business, and patent offices, as
well as of a health group, a mainte-
nance section, and a library-docu-
ments room; and also an editor. He
finally rounded out his administrative
staff with appointment of a shops sec-
tion chief in late 1944 and a safety
group head in early 1945.^^
Technical Organization
The technical organization of the
laboratory took shape along the lines
of the expanded program of research
and development, as recommended in
the April conferences and reviewing
committee report. There were sepa-
rate divisions for theoretical physics,
experimental physics, chemistry and
metallurgy, and ordnance. Within
each division were a number of work-
ing groups or teams, each devoted to
a particular aspect of bomb research
or development. For example, the
theoretical division had a diffusion
problems group; the ordnance divi-
sion had an implosion experimenta-
tion group; and the chemistry and
metallurgy division had a uranium
and plutonium purification group.
Leaders of the groups reported to
their division leaders and the division
heads reported directly to Oppen-
>='MDH, Bk. 8, Vol. 2, pp. II.4, III.7-III.9. III. 17,
III. 57, IX. 10, IX.19-IX.23, DASA; Ltr, Hughes to
Arnold, 15 Jan 44, Admin Files, Gen Corresp, 201
(Gen), MDR; Groves, Now It Can Be Told, p. 154,
n. 2; Defense Atomic Support Agency (DASA) Hist,
App. B (List of Manhattan Proj Committees), CMH;
Groves Diary, 18 May, 14, 16-17, 20, 23, 26, 29-30
Jun, 3-5 and 10 Jul 44, LRG.
heimer. As the work of the laboratory
progressed, groups completed their
projects and disbanded, and new
groups formed to take up investiga-
tion of new problems. ^'^
To direct the complex activities of
the laboratory's technical divisions,
Oppenheimer relied chiefly upon the
assistance and advice of a governing
board and a coordinating council.
The governing board, comprised of
seven to ten administrative and tech-
nical staff heads, began as an advisory
group but gradually evolved as a
policy and decision-making body, its
primary function being to assist Op-
penheimer in coordinating the vari-
ous scientific and engineering facets
of the weapon program. Unlike the
governing board, the coordinating
council did not ordinarily concern
itself with policy. Comprised of scien-
tists and technicians who were group
leaders or higher, the council provid-
ed a channel of communication be-
tween the second-level staff and the
governing board and primarily func-
tioned as a forum for interchange
of information and opinion on cur-
rent developments in the various
divisions. ^^
Keeping the staff scientists abreast
of the work going on in the various
technical divisions, in Oppenheimer's
opinion, was indispensable to the suc-
cess of the weapon program. To fa-
cilitate this situation, Oppenheimer,
with approval of the governing board,
established in May 1943 a weekly col-
'^MDH, Bk. 8, Vol. 2, pp. III.l and IX. 1, DASA;
DASA Hist, App. B, CMH; Hewlett and Anderson,
New World, pp. 237 and 310-12.
'^MDH, Bk. 8, Vol. 2, pp. III.1-III.3 and IX.1-IX.7,
DASA; DASA Hist, App. B, CMH; Hewlett and An-
derson, New World, pp. 237-38 and 310-12; Groves,
Now It Can Be Told, pp. 159-61.
494
MANHATl AN: THE ARMY AND IHE AlOMIC: BOMB
loquium for all laboratory staff mem-
bers. General Groves had accepted
the coordinating council as a neces-
sary risk to security, but when he
heard of the colloquium, he immedi-
ately protested to Oppenheimer that
he considered it to be a "major
hazard." Oppenheimer defended the
colloquium as an effective tool:
Giving the scientific staff adequate in-
formation, he believed, would actually
enhance security, for the scientists
would achieve a better understanding
of the necessity for secrecy. Groves
decided to defer to Oppenheimer's
wishes and let the colloquium contin-
ue, having concluded that the most
important reason Oppenheimer
wanted a colloquium was not to pro-
vide information but "to maintain
morale and a feeling of common pur-
pose" in his scientific staff. ^^
The Military Policy Committee sup-
ported Groves's views concerning the
potential security risk of the Los
Alamos colloquium. Seeking a solu-
tion to the broader issue of which the
colloquium was symptomatic — -how to
bolster the morale of all project scien-
tists by getting them to accept the ne-
cessity for security restrictions — the
committee decided that the problem
was sufficiently serious to warrant
using its trump card, a letter from the
President himself to the scientists. In
late June, OSRD Chairman Vannevar
Bush took advantage of an appoint-
ment with Roosevelt to secure his ap-
proval for the proposed letter. The
President agreed enthusiastically, and
Conant drafted an appropriate com-
munication for Roosevelt's signature. ^ ^
At the July meeting of the collo-
quium, Oppenheimer read the Presi-
dent's letter to the assembled scien-
tists. The scientists, as a staff member
subsequently recalled, seemed much
encouraged by the President's expres-
sion of satisfaction with their "excel-
lent work" thus far, his assurance that
the atomic project was of great sig-
nificance to the war effort, and his in-
dication of confidence in their "con-
tinued wholehearted and unselfish
labors" toward successful completion
of the project. They also appeared to
listen attentively to the President's ex-
planation of why "every precaution
[must] be taken to insure the security
of your project," and his assumption
that they were "fully aware of the rea-
sons why their endeavors must be cir-
cumscribed by very special restric-
tions." Although the presidential
letter undoubtedly achieved its two-
fold purpose, Oppenheimer chose not
to regard it as a directive to discon-
tinue the colloquium. But he did care-
fully screen those permitted to attend
it and otherwise tightened security ar-
rangements for its sessions.^®
Manhattan's original concept that
Los Alamos should function in com-
plete isolation obviated the laborato-
'* Quoted words from Ciroves, Xoiv It Can Be Told.
p. 167. See also MDH. Bk. 8, Vol. 2, pp. III.3-III.4,
DAS A; Oppenheimer Hearing, pp. 166-67; Hewlett and
Anderson. \eu< Woild. p. 2,S8.
'^MPC Min. 24 Jun 43, MDR; Memo for File,
Bush, sub: Cxjnf With President, 24 Jun 43, OSRD;
Hewlett and Anderson, .\eu> World, pp. 238-39. The
President's letter recei\ed mixed reactions from
Metallurgical Laboratory scientists. See Ch. IX.
'8 Qiioted phrases from Ltr, Roosevelt to Oppen-
heimer, 29 Jun 43, OCC. Files, Gen Corresp, MP
Files, Fldr 25, lab D, MDR. See also MDH, Bk. 8,
Vol. 2, pp. III. 7. DASA. David Hawkins, the author
of this account of the wartime history of the Los
■Alamos Laboratory, regularly attended meetings of
the colloquium as a special assistant on Oppen-
heimer's staff.
IHE LOS ALAMOS WEAPON PROGRAM
495
ry's having any regularly established
channels of communication with other
Manhattan District or outside organi-
zations. Consequently, whenever the
laboratory required technical informa-
tion from these sources, it had to
obtain special permission from Gen-
eral Groves's Washington office. This
ad hoc system remained the basic
policy throughout the war, although
Groves had to grant some limited ex-
ceptions to it. For example, in June
1943, he allowed Los Alamos scien-
tists not only to correspond but also
to visit certain members of the Metal-
lurgical Laboratory to secure speci-
fied data on fissionable materials and
other chemicals. And again in Novem-
ber, he consented to let Oppenheimer
make a one-time visit to the Clinton
plants after the governing board at
Los Alamos had indicated repeatedly
that there were going to be serious
delays if someone at the laboratory
did not secure information on the
production schedules for fissionable
materials. ^^
The project's security system was
again severely tested in early 1944,
when a reorientation of the weapon
program from theoretical and experi-
mental research to ordnance and en-
gineering problems necessitated in-
creased liaison between Los Alamos
and outside agencies. W'ith strict com-
partmentalization still in effect, many
of the laboratory staff members who
required liaison with civilian agencies
resorted to a variety of clandestine
devices, such as using blind addresses
and NDRC identifications and re-
questing technical reports through
Tolman's NDRC office in W'ashing-
ton, D.C. Security barriers were less
formidable with other military ele-
ments, including the Army's Ord-
nance Department, the Navy's Bureau
of Ordnance, and the Army Air
Forces. ^°
The weapon program reorientation
provided Oppenheimer with an op-
portunity to form a more effective
laboratory administration and orga-
nization in mid- 1944. Aware of
Groves's general dissatisfaction with
the existing organization, Oppen-
heimer realigned the administrative
and technical components of the labo-
ratory to reflect the new emphasis on
engineering and ordnance develop-
ment of atomic devices and, more
particularly, on solution of the still
formidable problems of implosion.^ ^
One goal of the reorganization was
to realign the scientific leadership of
the laboratory so that its efforts were
brought to bear on the most urgent
phases of bomb development. By
abolishing the governing board and
dividing its functions between an ad-
ministrative and a technical board,
Oppenheimer eliminated unnecessary
diversion of scientific leadership into
housekeeping activities. A series of
special conferences and committees
to supervise particular aspects of
bomb fabrication and testing ensured
concentration of effort on key prob-
lems. The intermediate scheduling
conference, which began meeting in
August 1944, coordinated work of
19 UY)H, Bk. 8, \ ()1. 2. pp. 111.4-111,5, DASA;
Memos, Groses to C.oniplon and Oppenheimei,
17 Jun 43, and Oppenheimer to (irovcs, 4 Oct 43,
osi^D.
20 MDH, Bk. 8, \ ol. 2, pp. III..5-III.(i, DASA.
2* Except as otherwise stateci, discussion of I.os
Alainos reorganization is based on MDH, Bk. 8,
\ol. 2, pp. IX. 1 -IX. 7, DASA; DASA Hist, App. B.
CMH; Hewlett and Anderson, .\>;/' World, pp. 310-
12 and 317-19.
496
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
those laboratory groups primarily
concerned with the implosion bomb.
The technical and scheduling confer-
ence, organized in December, under-
took responsibility for programing ex-
periments, use of shop time, and em-
ployment of active materials. The
cowpuncher committee, so designated
by laboratory officials because it was
established to "ride herd" on implo-
sion, met for the first time in March
1945. Other committees supervised
weapon testing, procurement of deto-
nators, scheduling of experiments
with U-235, and development of ini-
tiators for implosion devices.
Both Conant and Groves realized
that Oppenheimer was faced with
complex industrial problems, yet he
lacked an industrial expert on his staff
to advise him on these problems.
Consequently, in November 1944,
Groves recruited the services of Hart-
ley Rowe of the United Fruit Compa-
ny, an outstanding industrial engineer
who also had served with the NDRC
and as a technical adviser to General
Eisenhower, Supreme Commander,
Allied Expeditionary Force. Rowe
spent considerable time at Los
Alamos in late 1944 and early 1945,
guiding the technical divisions in the
development of the procedures by
which laboratory models could be
converted into production units — the
final phase in the weapon program. ^^
Oppenheimer's reorganization di-
rectly impacted on the makeup and
character of the laboratory's technical
divisions, transforming their focus
from problems of research and ex-
perimentation to those relating to en-
gineering and fabrication of the
bomb. When measurement of the fis-
sion rate of plutonium indicated it
could not be used in a gun-type
bomb, technical activities shifted to
development of an implosion-type
bomb. Oppenheimer created new di-
visions and reduced the size of sev-
eral of the older divisions. The theo-
retical and research divisions were
retained, but most personnel and fa-
cilities were funneled into the ord-
nance, weapon physics, explosives,
and chemistry and metallurgy divi-
sions. In the spring of 1945, with fab-
rication of atomic devices proceeding
apace, Oppenheimer established new
off-site testing divisions: Project Al-
berta, to carry out all activities related
to combat delivery of both the gun
assembly and implosion bombs; and
Project Trinity, to test-fire the first
implosion bomb. While the new divi-
sions comprised integral parts of the
laboratory organization, division field
teams from Los Alamos assembled
and tested the various components of
the weapons at other sites. ^^
Post Administration
The wartime character of the Los
Alamos post administration — its orga-
nization and personnel composition —
directly reflected the course of the
bomb development program. Thus,
22 Groves Diary, 12, 26 Oct, 9 Nov 44 and 11, 20
Jan 45, LRG; Rowe to Capt John A. Derry (of
Groves's office), 13 Nov 44, Admin Files, Gen Cor-
resp, 201 (Hartlev Rowe), MDR; Oppenheimer Heanng.
pp. 508-09.
23 For further details on the organization and lo-
cation of Project Trinity see final section of Ch.
XXV. Lansing Lamont's Day of Tnnity pro%ides a
popular account. On Project Alberta see MDH, Bk.
8, Vol. 2. pp. IX.6-IX.7 and XIX.1-XIX.13, DASA.
The account in MDH is based upon Ms, Norman F.
Ramsey, "History of Project A[lberta]," Incl to I.tr,
Ramsev to Brig Gen Ihonias F. Farreli (MD Dep
Cdr), 27 Sep 45, LASL.
THE LOS ALAMOS WEAPON PROGRAM
497
when Colonel Harman began to orga-
nize the post in the spring of 1943,
he was guided by the then existing
plans for a small technical laboratory
with a supporting community of no
more than a few hundred civilian
and military personnel, but requiring
an extraordinary degree of protective
security and self-sufficiency. The
modest organization he formed for
this purpose was comprised of three
major divisions. The Administrative
Divison looked after civilian person-
nel matters, provided various means
for internal and external communica-
tions, maintained essential records,
and audited post accounts. The Pro-
tective Security Division furnished
post security and administered the
military units assigned to Los Alamos,
including Military Police (MP) and
Provisional Engineer Detachments
(PED). The Operations Division pro-
vided and maintained most of the
community services — housing, utili-
ties, commissary, and education and
recreation facilities — in cooperation
with the laboratory's community
council. Finally, a small, semiautono-
mous procurement group performed
quartermaster functions; monitored
contracts; and supervised property
and warehouse operations, including
the important Santa Fe receiving facil-
ity for laboratory shipments from the
Los Angeles procurement office. ^^
Personnel for the original post or-
ganization began arriving on the Hill
in late April 1943. By early June,
Colonel Ashbridge, who had just re-
placed Harman as post commander,
had a staff of 18 officers (including 1
WAAC officer). This staff directed the
activities of slightly over 450 military
and civilian personnel. There were
more than 200 enlisted men in the
MP unit, including attached medical
and veterinary personnel; 85 enlisted
men in the PED unit; 7 WAAC enlist-
ed women; and somewhat fewer than
160 civil service employees. To meet
increased demands for post services
and support in the ensuing months,
Ashbridge obtained additional PED
and MP personnel from the 8th Serv-
ice Command headquarters in Dallas.
And with General Groves's assistance,
additional civil service and military
personnel were procured through
Corps of Engineers and other chan-
nels— for example, the Army Special-
ized Training Program (ASTP), which
furnished enlisted men with scientific
and technical skills. ^^
Military personnel with scientific
and technical training were assigned
to the Manhattan District's Special
Engineer Detachment (SED), 9812th
Technical Service Unit; the latter unit
was a special engineer organization
formed at District headquarters to
retain scientific and technical employ-
ees subject to the draft and to recruit
additional technically trained person-
nel for the project. Los Alamos began
24MDH, Bk. 8, Vol. 1, pp. 6.1-6.2 and App. B2,
DASA. See Ch. XXIII for a detailed discussion of
the administration of community affairs at Los
Alamos.
^^ Statistics in this and the following paragraphs
on military and civilian personnel assigned to the
Los Alamos post in 1943 are based on MDH, Bk. 8,
Vol. 1, pp. 7.3-7.15 and Apps. B2-B3 (Org Charts,
Los Alamos, 5 Jun and 5 Dec 43), and Vol. 2, p.
III. 18 and App. Graph No. 2 (Number of Persons
Employed: Distribution Among Civilians, W'AC, and
SED), DASA; List, sub: MD Offs on Duty at Los
Alamos and Iheir Duties, 6 May 44, Incl to Memo,
Ashbridge to Groves, 14 Jun 44, Admin Files, Gen
Corresp, 201 (Gen), MDR; Groves Diary, 25 Aug
and 3 Sep 43, LRG. See Ch. XVI for information on
the 8th Service Command's provision of troops for
the atomic project and on the ASTP, as well as on
the formation of the 9812th and the SED.
498
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
receiving SED personnel in August
1943 and, because of Groves's per-
sonal intervention, periodically there-
after. SED members worked at techni-
cal jobs for the laboratory, but were
assigned to the post administration
for rations and quarters.
By the end of the year, total per-
sonnel assigned to the post adminis-
tration approached 1,100. The largest
numerical increase was in civil service
employees, nearly 450 as compared
with some 160 in June. Increases in
the military complement were more
moderate. The number of MP's grew
from 190 to 300 and that of PED's
from 85 to around 200. With the es-
tablishment of a regular WAG De-
tachment at Los Alamos, the number
of enlisted women was increased from
7 to 90. And because of the assign-
ment of recent ASTP graduates to
Los Alamos, SED strength figures in-
creased from 300 to about 475.
Even with expansion of bomb de-
velopment activities and its concomi-
tant increases in post personnel, the
basic structure of the post administra-
tion remained essentially the same,
with only the Operations Division un-
dergoing a moderate reorganization.
In early 1944, when Manhattan as-
sumed responsibility for all further
construction and maintenance activi-
ties at Los Alamos, Golonel Ash-
bridge strengthened the operating ca-
pability of the Operations Division by
reorganizing it into two major sec-
tions— one for community construc-
tion and maintenance, the other for
technical area work — and by recruit-
ing more carpenters, bricklayers,
plumbers, painters, electricians, and
common laborers.
Increased demands for new techni-
cal-type construction soon outran the
capabilities of the division, so Man-
hattan engaged another professional
construction contractor, Robert E.
McKee of El Paso. In spite of this
major change, Golonel Ashbridge de-
cided to retain the dual organization
of the division, which had the security
advantage of limiting access to the
sensitive technical area to one group
of workmen. But in early 1945, with
the decision to retain McKee on a
permanent basis to perform construc-
tion services at Los Alamos, the new
post commander, Gol. Gerald R.
Tyler, rejected the dual organization
and reverted to a unified structure. In
this reorganization, which remained
in effect until after completion of the
wartime program, Tyler set up sepa-
rate sections for contractor construc-
tion and administration, post con-
struction and maintenance, and post
engineer services. ^^
The Army's principal role at Los
Alamos, as well as elsewhere in the
Manhattan Project, was ensuring ef-
fective administration and operational
efficiency. In the main, this was
achieved through the personal cogni-
zance and direct action of the post
commander. As the military adminis-
trator, the post commander played a
key role in arranging military defer-
ments for technical employees of the
University of Galifornia, which includ-
ed most of the scientists and techni-
cians, and in monitoring the ship-
ments of fissionable materials to Los
26MDH, Bk. 8, Vol. 1. pp. 5.6-5.11, 7.2, 7.13-
7.14, App. B4 (Org Chart, I Feb 45), DASA; Fine
and Remington, Corps of Engineers: Construction, pp.
697-700. Tyler replaced Ashbridge in late 1944,
when the latter's health began to fail under the
strain of the demands placed upon him as Los
Alamos post commander (see Groves Diarv, 28 Oct
and 2, 14, 25 Nov 44, LRG).
THE LOS ALAMOS WEAPON PROGRAM
499
Alamos and the transmission of docu-
ments containing technical informa-
tion from other parts of the Manhat-
tan District. Coincident with his gen-
eral supervision of post procurement
and construction and maintenance ac-
tivities, he consulted with key mem-
bers of the laboratory administration,
especially Oppenheimer and Capt.
William S. Parsons, the naval gunnery
officer in charge of the laboratory's
ordnance group. These consultations
increased in frequency as program
emphasis shifted from theoretical and
experimental research to ordnance
and engineering problems and re-
quirements expanded for construction
of new technical facilities and pro-
curement of additional materials and
equipment. 2"^ Praetors endemic to the
atomic project, however, presented
major obstacles to achievement of an
efficient procurement system at Los
Alamos. Among these were the
atomic reservation's location, more
than a thousand miles from any major
market and distribution center; secu-
rity requirements that necessitated
time-consuming, roundabout routing
of the bulk of procurement through
Los Angeles and elsewhere; and the
highly technical and often unique
character of many of the items to be
procured. Another factor was the Uni-
versity of California's insistence that
all matters of purchasing and pay-
ments must be administered directly
by members of the university business
staff. But because the Army would
not permit university employees at
Los Alamos, the project located its
" List, sub: MI) Otis on l)iii\ at Los Alamos and
Lht'ir Duties, 6 Mav 44, Iiul to Mtmo, Ashbiidge to
Crovcs, 14 Jun 44, MDR; DASA Hist, App. B,
(;MH; Fine and Renunjj;lon. ('.nipy a/ Enninrns: C.oii-
slriiftion. pp. 697-700.
main purchasing office in Los
Angeles.^®
In the face of these obstacles,
Groves, Lt. Col. Stanley L. Stewart of
the Los Angeles procurement office,
and Army procurement personnel at
Los Alamos worked with University of
California officials to increase pro-
curement efficiency. Groves main-
tained direct and frequent contact
with the Los Angeles Area Engineers
Office, established in early 1943 to
supervise University of California pro-
curement personnel. He sanctioned
the opening of branch purchasing of-
fices in New York and Chicago to
provide the laboratory with direct
access to eastern markets, saving time
and reducing paperwork for the Los
Angeles office. Army and laboratory
procurement officials at Los Alamos
worked out an arrangement for requi-
sition of certain available items locally
through the post supply organization.
As the volume of required materials
increased dramatically in late 1944,
Groves authorized a request by the
laboratory's ordnance division to set
up a separate procurement group.
The Army officer supervising this new
procurement channel maintained an
office in Detroit, which was an impor-
tant source for many of the bomb
components. He also made frequent
use of the California Institute of
Technology's experienced procure-
ment personnel at its Project Camel
site. In spite of all these efforts, the
flood of last-minute requisitions for
the implosion weapon test in the
spring of 1945 created threatening
delays. Oppenheimer convened an
28 MDH. Bk. 8, \ol. 2, pp. IIL27-IIL34, and \()l.
:i "Auxiliai\ Activities, " pp. 1.1-3.:^ and Apps. Al-
A2, I>A.SA
500
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
emergency meeting of project pro-
curement officials at Los Alamos, and
they agreed to increase procurement
personnel and salaries, to establish
direct communications between the
New York and Chicago offices, and to
require improved drawings and spec-
ifications in requisitions from the
laboratory. 2^
The reorientation and expansion of
bomb development activities eventu-
ally created more and more opportu-
nities for a surprisingly large number
of the military personnel assigned to
the post administration to contribute
directly to the technical side of the
weapon program. A number of WAC
enlisted personnel, for example,
moved from strictly clerical jobs in
the laboratory to technical work,
when scientists found they had the
requisite skills or training. Similarly,
several officers on the post command-
er's staff came to devote most of their
time to essentially scientific and tech-
nical work. The post legal officer in
the Administrative Division, Capt.
Ralph C. Smith, found that his princi-
pal assignment was solution of patent
problems, and several engineer offi-
cers who happened to have the neces-
sary training or background in chem-
istry, metallurgy, or physics worked
extensively with scientists and techni-
cians in the laboratory. Other post
staff officers worked full time in the
development and administration of
outlying test areas. Maj. Wilber A.
Stevens, for example, who began in
1943 as head of the Operations Divi-
sion, eventually was spending all his
time supervising projects at outlying
sites; acting as a liaison officer be-
tween technical and military person-
nel; and assisting in coordinating the
work of group leaders in the laborato-
ry. Stevens's subordinate. Captain Da-
valos, the post engineer heading the
division's Technical Area Section,
also became deeply involved in the
complexities of the technical program
in the course of helping to plan and
carry out construction and mainte-
nance for the laboratory. ^°
The post commander, too, tended
to be drawn into more and more
direct concern with technical prob-
lems. In the earliest period, lack
of adequate liaison and General
Groves's policy of dealing personally
with the technical program had ex-
cluded the post commander from
knowledge or participation. Gradual-
ly, however. Colonel Ashbridge and
members of the laboratory staff devel-
oped avenues for more effective liai-
son. Oppenheimer's May 1943 ap-
pointment of a special assistant on his
staff to take responsibility for liaison
with the post administration had
opened one avenue of communica-
tion, and Ashbridge's assignment to
membership on the laboratory's ad-
ministrative board in July 1944 pro-
vided further opportunity for the post
commander to keep informed of de-
velopments in the technical program.
General Groves, with the support
of his Washington staff, continued
throughout the war to be perhaps the
single most effective liaison channel
2Mbid„ Vol. 2. pp. III.29-III.35. IX.8-IX.9,
IX.13-IX.14,.and \ol. 3, pp. 2.8-2.9, DASA; Groves
Diarv, Jul 44, 2 Nov 44, 26 Apr-May 45, LRG; Llr,
Oppenheimer to Bu.sh, 21 Nov 44, Admin Files,
(;cn Corresp, 600 12 (Research), MDR.
30 List, sub: MD Oils on Dutv at I.os Alamos and
Iheir Duties. 6 Mav 44, Ind to Memo, .\shbiidge to
Groves, 14 Jan 44, MDR; MDH, Bk. 8, Vol.
1, pp. 7.5 and 7.12, and \ol. 2. pp. \'II.l, \'II.9,
XV1.1-XVI.2, DASA.
THE LOS ALAMOS WEAPON PROGRAM
501
Lt. Col. Curtis A. Nelson
between the laboratory and post ad-
ministrations at Los Alamos. By fre-
quent telephone calls to Oppen-
heimer, Ashbridge (later Tyler), and
Parsons, as well as to Colonel Stewart
in Los Angeles, the Manhattan com-
mander kept in close touch with both
community and technical develop-
ments. As with other key installations
of the Manhattan Project, Groves sup-
plemented his telephone calls with
teletype messages, memorandums,
and, about once every two or three
months, an inspection and consulta-
tion visit lasting two or three days. In
addition. Parsons visited Groves in his
Washington office about once a
month and Oppenheimer, Ashbridge,
and Stewart less frequently.^ ^
^^ Groves Diary, Jan 44-JuI 45, LRCi. For exam-
ple, see specifically entries for 14 Mar and 18 and
24-26 May 44 (visits by Oppenheimer and Parsons
lo see Groves in Washington, D.G.) and 1 1 Dec 43,
lor his involvement in details of administration. For
Groves's correspondence with Oppenheimer on the
more technological aspects of the bomb develop-
To facilitate overall administration
and operation of the weapon pro-
gram. Groves took special interest in
matters of security, construction, and
materials and manpower procure-
ment. Of note are his personal efforts
to expedite manpower recruitment for
Los Alamos. In October, for example,
following Conant's expression of
alarm at the continuing deficiencies in
the senior scientific staff. Groves
worked out with a reluctant Compton
for the transfer of about fifty Metal-
lurgical Project physicists. At the
same time, he brought pressure upon
the District's Personnel Division chief,
Lt. Col. Curtis A. Nelson, to maintain
a flow of junior scientists for the lab-
oratory's SED unit. His prodding of
Nelson proved effective, for by early
1945 nearly half the working person-
nel on the Hill was in uniform.
Groves's frequent pleas to manpower
authorities in Washington to supply
the New Mexico installation with
more skilled workmen, especially ma-
chinists, were less productive. Hence,
when Oppenheimer uncovered an op-
portunity in late 1944 to establish a
liaison with the California Institute
of Technology's well-manned Navy
rocket development group in Pasade-
na, Groves personally intervened to
expedite an arrangement with the
Navy's Bureau of Ordnance that
made, under a newly created Project
Camel, both skilled workers and sur-
plus facilities available to the
laboratorv.^^
ment program see MDR, Admin Files, Gen Corresp,
400.17 (Mfg-Frod-Fab) lor entries during the No-
vember 1943-Augusi 1944 period.
32MnH. lik. 8, \'ol. 2, p. IX.ll. DASA; Groves
Diarv, Hi Oct, 25. 28 Nov. 1. .5-6, 12. 27, 30 Dec 44
and 1, 3, 5, 25-26 Jan, .5-9 Feb, 3 Aug 45. LRG;
502
MANHATTAN: THE ARMY AND THE Al OMIC BOMB
Although manpower conditions re-
mained less than satisfactory through-
out the war, the Manhattan com-
mander's efforts directly contributed
in some measure to relieving person-
nel deficiencies at Los Alamos. Thus
in the summer of 1945, the number
of post personnel continued to in-
crease, though not at a significant
rate. The SED unit had about 1,400
enlisted personnel by July. Others in
the post administration numbered
1,260 8th Service Command troops
Ltr, Conant to Bush. 20 Oct 44. OSRD; Ltrs, Op-
penheimer to Bush, 21 Nov 44, and Groves to Stew-
art {I.OS Angeles), sub: Assignment of L^iaison Off
for OSRD Contract OEM sr-418 vv/CIT, Pasadena.
Calif., 16 Jan 45, Admin Files, Gen Corresp, 600.12
(Research), MDR; Hewlett and Anderson, \eu'
World, p. 315. See Ch. XVI on transfer of physicists
from the Metallurgical Project.
(500 MP's, 500 PED's, 260 WAC's)
and more than 2,000 civilian employ-
ees. This total of more than 4,900 —
with 1,300 scientists and technicians
at the laboratory and some 500 con-
struction contractor personnel — gave
Los Alamos a total working popula-
tion of approximately 6,700. At this
juncture, as the bomb development
program moved rapidly toward the
actual test of an atomic device, all at
Los Alamos were concentrating their
efforts on the technical preparations
for this climactic event. ^^
^^ See Ch. XVI for the basis of these population
statistics. An official historical account of the project
written in 1947 estimated total population of Los
Alamos in December 1944 as 5.675 and at the end
of 1945 as 8,200. See MDH, Bk. 8, Vol. 1, p. 7.15
and App. B7, and Vol. 2, App. Graph No. 2, DASA,
and Groves Diarv, 17 Jan 44, LRG.
CHAPTER XXV
Weapon Development and Testing
A watershed in the development of
nuclear science was the Army's build-
ing and testing of the atomic bomb.
In early 1943, with America engaged
in what was believed to be a desper-
ate race with Germany, American and
foreign-born physicists, chemists, me-
tallurgists, and engineers, as well as
military technical experts, came to-
gether at Los Alamos to devise a
weapon with a power hitherto un-
matched by man. This practical objec-
tive melded with the larger scientific
challenge of turning atomic theory
into a material reality and resulted in
a unity of purpose that sustained the
assembled scientists in their unique
atomic adventure.
Organized by Oppenheimer into
specialized research and technical di-
visions and groups, the Los Alamos
scientists divided their efforts be-
tween two fundamental tasks: solving
the theoretical and experimental
problems of a fission bomb,^ and
' Bv laic ScplfmbcM 1943, OppfiiluMmer and his
scienlitic stafi dfiimlclv had decided to concentrate
the laboratory's major resources on developing a
fission bomb, relegating work on the "super" (or
lusion) bomb to theoretical investigations by a small
group of scientists under the leadership of physicist
Kdward Teller and then, in 1944, phvsitist Knrico
Fermi. Both C.roves and Richard {".. I olman, the
Manhattan commander's chief ad\iser on weapon
development, supported this adion to c arr\ on
super bomb research e\cn in the most he(ti( peiiod
working out the complex ordnance
and engineering problems of weapon
design and fabrication. Their concen-
trated activity over a two-year period,
from 1943 to 1945, transformed the
laboratory, for all intents and pur-
poses, into a weapon assembly and
test plant. The climax was Project
Trinity, the crucial test of their cre-
ation: the first atomic bomb.
Building the Bomb
By the fall of 1943, with the labora-
tory's administrative organization
largely worked out and the scientists'
talents and energies channeled into
various research programs, Oppen-
heimer, Groves, Conant, and the
other project leaders turned their at-
tention to the problem of determin-
ing the most suitable design of an
atomic device.^ During inspection
of fission bomb development, primarily because
thev could not forget the known interest of the Ger-
mans in deuterium (heavy water) — the active materi-
al for the super bomb. See Groves Diary. 29-30 Sep
43, LRG: Groves, Sow It Can Be fold. p. 158;
Kdward Feller and Allen Brown, The Legacy of Hiro-
shima (Garden Citv, N.V.: Doubledav and Co.,
1962), pp. 38-40: MDH, Bk. 8, \'ol. 2, "technical."
pp. XIIFI-XIII.IO. DASA.
^Except as otherwise indicated, the discussion on
weapon development is based on MDH, Bk. 8. \'ol.
2. pp. I\'.1-\'IIF32 and X.1-X\I1.22, DA.SA, and
Hewlett and Anderson, .Vnc Worhi. pp. 240-54 and
3 1 0-2 1 .
504
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
visits to Los Alamos, Groves found
that some of the scientific staff mem-
bers, including Captain Parsons,
strongly favored the gun rather than
the implosion principle as more
feasible for developing a usable fis-
sion weapon. They pointed out that
the well-established mechanical tech-
niques of the gun made this weapon
type almost certain to work if proper-
ly designed and that the design and
engineering of the outer configura-
tion and mechanics of the gun were
already well advanced. Furthermore,
once the physicists, chemists, and me-
tallurgists could provide the precise
nuclear specifications for the active
material— whether U-235, Pu-239, or
even U-233 from thorium — develop-
ment of a workable gun-type weapon
would be only a matter of time.
Assessment of precise nuclear spec-
ifications for a fission weapon was the
responsibility of the laboratory's ex-
perimental physics division. Through
intensive research, the division's
physicists gathered considerable data
on the effect of cosmic rays on fis-
sioning, on measurement of nuclear
cross sections, on scattering phenom-
ena, and on other aspects of the fis-
sion process that related to bomb
specifications and efficiency. With this
data they were able to calculate by the
summer of 1944 that the destructive
effect of either an implosion- or gun-
type bomb would justify the effort re-
quired to fabricate it. They still lacked
an answer, however, to the question
on which the success of the entire
project hinged: How much fissionable
material would be needed for an ef-
fective weapon? Whether or not
atomic weapons would be available
for use in the war depended on the
answer to that question.^
One way to increase the efficiency
of a fission bomb was to achieve max-
imum purity in the active materials.
Hence, a major program of the lab-
oratory's chemistry and metallurgy di-
vision was to improve the methods
for purifying U-235 and Pu-239. Be-
cause purity requirements for urani-
um were about one-third less than
those for plutonium and because,
until early 1944, there was not
enough Pu-239 available to permit ef-
fective work on its purification, the
chemists experimented with uranium
but with the purpose of developing
techniques that might also be used
with plutonium. When sufficient
amounts of Pu-239 arrived from the
Clinton pile, the chemists developed
both wet and dry purification process-
es. Subsequently, they employed the
more satisfactory wet process in final
purification of most plutonium for the
bomb.
Before U-235 or Pu-239 could be
used in a fission bomb, they had to be
converted into metal of the proper
configuration and purity. Metallur-
gists at Los Alamos faced a number
of problems in making uranium or
plutonium metal of the desired qual-
ity, including the tendency of uranium
to catch fire during processing and
the difficulty of handling the highly
reactive and poisonous plutonium.
For forming uranium into metal, they
experimented with electrolytic and
centrifuge processes but finally settled
upon a modification of the stationary
niPC Rpt, 21 Aug 43, OCG Files, Gt-n Corresp,
MP Files, Fldr 25, Tab E. MDR; ibid., 4 Feb 44,
OCG Files, Gen Corresp, MP Files, Fldr 25, Tab C,
MDR.
WEAPON DP:VEL0PMEN 1 AND TESTING
505
Technical Area at Los Alamos, built around Ashley Pond and along Trinity Avenue
bomb method, devised earlier at Iowa
State. For plutonium, the metal-
lurgists were as handicapped as the
chemists, with only microscopic quan-
tities available. Fortunately, many of
the methods they developed for ura-
nium proved adaptable to plutonium.
Again like the chemists, the metallur-
gists had to devote considerable
effort to devising improved recovery
methods so that virtually none of the
precious metal would be lost in pro-
cessing it for use in a weapon.^
While awaiting the physical and nu-
clear specifications for the active ma-
terials, the laboratory's ordnance divi-
sion worked on the development and
^Ltrs, (irovcs to Oppcnheimcr, 19 Jvui 44, and
Oppenheimei to Groves, 27 Jun 44, Admin Files,
Gen Corresp, 729.31, MDR; Ltr, Oppenheimer to
Groves, 31 Aug 44, Admin Files, Gen Corresp,
400.17 (Mfg-Prod-Fab), MDR.
proving of the mechanical compo-
nents for the first experimental guns.
First priority was design and fabrica-
tion of a plutonium-projectile gun.
This gun type posed more problems
than a uranium gun, because of Pu-
239's higher propensity to predetona-
tion, but the division's theory that a
gun with sufficient muzzle velocity to
avoid predetonation with Pu-239 was
certain to be suitable for U-235 justi-
fied the concentration of effort.
Using standard ordnance and inte-
rior ballistics data obtained from the
National Defense Research Commit-
tee (NDRC), the ordnance division
had its design engineers complete the
drawings for a high-velocity gun and,
with subsequent approval from the
Navy's Bureau of Ordnance, ordered
forgings for two guns from the Naval
506
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Gun Factory in Washington, D.C. In
the meantime, while the guns were
being manufactured. Captain Parsons
arranged for construction of the
Anchor Ranch Proving Ground, some
8 miles east of the central laboratory
facilities, where, by September 1943,
the division's proving ground group
began testing and perfecting gun per-
formance techniques on a limited and
then increased basis.
By early 1944, gun research was ad-
vancing smoothly, despite a constant
shortage of experienced personnel
and difficulties in materials procure-
ment. The division's design engineers
had established the exact specifica-
tions of a low-velocity gun, to be used
with U-235. Hence, because these
specifications were considerably less
stringent than previously anticipated
for a U-235 gun, the engineers were
able to reduce the original muzzle ve-
locity requirements. This achievement
made it possible for the division to
place a March order with the Naval
Gun Factory for three of these urani-
um guns, which was much earlier than
expected and just days after the facto-
ry had delivered the first two plutoni-
um prototypes to Los Alamos.^
Primarily because of the undevel-
oped state of the art, interest in im-
plosion research for a time ranked
second to that in gun assembly re-
search. Since April 1943, physicist
Seth H. Neddermeyer from the Cali-
fornia Institute of Technology had
been conducting laboratory experi-
ments with high explosives, designed
to test the feasibility of the implosion
^ Rpt, Parsons, sub: Summarv of Ord Div, 15 Apr
44, OCG Files. Gen Corresp, MP Files. Fldr 19, lab
A, MDR; Memo, Tolman to (probably Groves), sub:
Org of Ord Div at V (Los Alamos), 1 Mar 44, OCG
Files, Gen Corresp, MP Files, Fldr 25, 1 ab G, MDR.
principle. Handicapped by the short-
age of experienced personnel and by
the general lack of enthusiasm for im-
plosion among his colleagues, Ned-
dermeyer's project had definitely re-
mained a "dark horse" in the race for
completion of a workable atomic
device.
But all of this changed with the ar-
rival of John von Neumann in mid-
summer 1943. The widely respected
Hungarian-born mathematician from
the Institute for Advanced Study at
Princeton had been carrying out work
on shock waves for the NDRC. Apply-
ing knowledge of explosives gained in
his work with shaped charges, he
theorized the likely effects of increas-
ing the velocity of convergingly fo-
cused active material in the implosion
bomb. His calculations convinced him
that if the mechanical problems of
achieving higher velocity could be
solved, an implosion bomb would
attain criticality using less active ma-
terial of a considerably lower level of
purity than hitherto believed possible.
If he were correct, implosion offered
a means to save precious months in
developing a weapon — provided, of
course, that ways could be devised to
avoid predetonation and achieve sym-
metry in the imploding shock wave
inside the bomb.
By early fall Oppenheimer, Groves,
Conant, and the other project leaders
were reevaluating implosion. Groves
conferred with George B. Kistiakow-
sky, the distinguished Harvard chem-
ist who was an expert on explosives,
and with Oppenheimer and members
of the laboratory's implosion study
group. This led to a decision by Op-
penheimer and the laboratory's gov-
erning board to expand the implosion
WEAPON DEX'ELOPMENl AND EESFINC;
507
program immediately, beginning with
construction of an on-site plant for
casting and trimming test components
and installation of the unusual facili-
ties required for testing implosion de-
vices. In early November, Groves and
Conant outlined the advantages of
implosion to the Military Policy Com-
mittee, rhe following February, the
committee informed the President
that "there is a chance, and a fair
one, if a process involving the use of
a minimum amount of material
proves feasible, that the first bomb
can be produced in the late fall of
1944." 6
Once project leaders had approved
undertaking a major developmental
program for the implosion bomb.
General Groves began a full and ob-
jective analysis of the laboratory's or-
ganization, personnel, and facilities
for carrying it out. Consulting with
von Neumann and Parsons in Wash-
ington, D.C., he arranged to have
Tolman visit Los Alamos for an ex-
tended period to investigate the pro-
gram. Giving special attention to the
laboratory's ordnance division,
Tolman prepared a detailed analysis
of its organization and activities, in-
cluding estimates of the additional
personnel that he believed the divi-
sion would require to complete the
implosion program. Tolman found
that the laboratory had indeed made
considerable progress toward shifting
priority to implosion, although Op-
penheimcr was not yet prepared to
abandon some further efforts on the
almost certain-to-work plutonium gun.'
By the time of Tolman's visit, the
inevitable shift in emphasis from re-
search and experimentation to engi-
neering, fabrication, and testing was
already well under way. Construction
crews, under direction of Maj. Wilber
A. Stevens and partially comprised of
men from the Provisional Engineer
Detachment, had completed or were
at work on a number of essential test
areas (eventually there would be more
than thirty of these). They had built a
facility for casting containers for ex-
plosive charges at the Anchor Ranch
Proving Ground and, less than a mile
to the south, were well advanced on a
much larger and more elaborately
equipped area — designated S (for
Sawmill) Site — with a laboratory,
shops, powder magazines, and even a
dining hall. In addition. Major Ste-
vens's crews had begun work on sev-
eral outlying sites required especially
for testing various implosion devices.
Special Engineer Detatchment (SED)
troops provided a considerable part
of the manpower operating these test
sites.
Ordnance teams from Los Alamos
also assembled and tested bomb com-
ponents at test sites at Wendover
Field (Utah), Inyokern (California),
and Alamogordo Army Air Field
(New Mexico). {See Map 2.) For these
tests, the laboratory procured normal
weapon components and high explo-
sives from a variety of government
and private suppliers — the Naval Gun
« Quotation from MFC Rpt, 4 Feb 44, MDR. See
also Groves Diarv. 20 and 29-Sl Oct 43. LRG, and
MFC Min, 9 Nov 4.^. OCC, Files, Gen Corresp, MP
Files, Fldr 23, Tab A, MDR.
■' Memo, lolman to (iroves, sub: Rpt on Status of
Ord Work at Y, i Mar 44, and attached report,
OC(; Files, Gen Corresp, MF Files, Fldr 25, Tab G,
MDR; (iroves Diarv. 21 jaii, 22 Feb, and 2-3 Mar
44, FRG.
508
MANHAITAN: THE ARMY AND THE ATOMIC BOMB
Factory in Washington, D.C.; the
Naval Ordnance Plant in Centerline,
Michigan; the Naval Depot in York-
town, Y^irginia; the Expert Tool and
Die Company in Detroit; the Hercules
Powder Company in Wilmington,
Delaware; the Monsanto Chemical
Company in Dayton, Ohio, to name
only a few. But for special parts and
materials that were unobtainable, the
laboratory itself had to function as an
ordnance manufacturing plant. Best
illustrating this concentration of effort
was the major task of converting
U-235 and Pu-239 into metal bomb
components.^
In early 1944, the laboratory inten-
sified procurement efforts for special-
ized equipment for implosion testing.
In April, the IBM machines needed to
speed up analysis of useful data from
implosion tests arrived. And in July,
the Military Policy Committee ap-
proved procurement of a huge solid
steel receptacle for testing the first
implosion device, thus ensuring re-
covery of the active material in the
event of a fizzle. By then, implosion
development had made giant strides,
but still unknown were the relative ef-
ficiency of such a design and how
long it would take to build a moder-
ately effective implosion device.^
Despite frequent changes in the
general specifications for an atomic
weapon, the laboratory's ordnance di-
8MDH, Bk. 8, Vol. 1. "General," pp. 5.12-5.13.
6.12, Apps. A8 (Site Map) and D16 (Site Constr
Data), and Vol. 2. pp. V1I.30-VII.31, XVI. 12,
XVI.14-XVI.15, XIX.1-XIX.5, DASA; Hewlett and
Anderson, X'ew World, pp. 312-17.
9 Groves, Xow It Can Be Told. pp. 288-89; MPC
Min, 23 Jul 44, MDR. The bottle-shaped steel re-
ceptacle for the implosion device was designated
"Jumbo" because of its massive size (25 by 12 feet)
and weight (214 tons).
vision had worked out the design of
two basic bomb models by the
summer of 1944. The gun-type
model, the "Thin Man," was about 10
feet in length, with a varying diameter
of 1.5 to 2.5 feet, and had an estimat-
ed weight (when loaded) of 5 tons.
The implosion-type model, the "Fat
Man," was almost as long (9 feet) but
thicker, tapering down from a hemi-
spherical nose measuring 5 feet in di-
ameter to a tailend of about 3 feet,
and had an estimated weight (when
loaded) of 6 tons. Captain Parsons
had the models constructed at the
Applied Physics Laboratory in Silver
Spring, Maryland, and tested at the
Naval Proving Ground on the Poto-
mac River at Dahlgren, Y^irginia. The
laboratory's delivery group then con-
ducted in-flight tests in a modi-
fied B-29, dropping dummy models
of both types of bombs, at the Muroc
Army Air Field near San Francisco.
The ballistical characteristics of Thin
Man were satisfactory, but Fat Man
displayed serious instability, fortunate-
ly soon overcome by a relatively simple
modification in the tail assembly. ^°
But the sense of having achieved
substantial progress in weapon design
and fabrication was marred by a
number of uncertainties. The feasibil-
ity of implosion had yet to be demon-
strated and the rate at which U-235
and Pu-239 could be produced by the
Clinton and Hanford plants remained
very much in question. And in July,
»o MPC Rpt, 7 Aug 44, OCG Files, Gen Corresp,
MP Files, Fldr 25, Tab K, MDR. Ltr, Parsons to
Groves, 24 Dec 43; Rpt, Parsons, sub: Prgm for
Flight Test of Dummy Bombs from B-29 Plane, 24
Dec 43. Both in Admin Files, Gen Corresp, 600.913,
MDR. Ltr. Parsons to Norman F. Ramsey (Delivery
Gp, Los Alamos Lab), 17 Jul 43, Admm Files, Gen
Corresp, 600.12 (Research), MDR.
WEAPON DE\ ELOPMENT AND TESTING
509
Los Alamos scientists furnished dis-
quieting new data on the plutonium
that would be produced in the Han-
ford piles, indicating the composition
of its neutron background would
cause predetonation in the plutonium
gun.
Project scientists had known for
some time that in the process of irra-
diating uranium in the pile some of
the Pu-239 was likely to pick up an
extra neutron, forming Pu-240. When
plutonium from the Clinton pilot pile
became available in the spring of
1944, the radioactivity group at Los
Alamos ran a series of tests that con-
firmed the presence of Pu-240 and
indicated it would be present in far
larger amounts in plutonium from the
Hanford piles. Hence, the neutron
background of the active material for
the bombs would be several hundred
times greater than was permissible.
While the Pu-240 could be separated
from the Pu-239 by the electromag-
netic process, construction of a plant
to do so would delay production of a
plutonium weapon for many months.
Oppenheimer informed Conant of
the 240 problem in early July. To
decide how best to deal with it,
Conant took immediate steps to as-
semble project leaders for a confer-
ence at the Metallurgical Laboratory
on the seventeenth. Besides Conant,
the following were in attendance: Op-
penheimer, Compton, Charles A.
Thomas, in his capacity as coordina-
tor of active material purification re-
search, Fermi, Croves, and Nichols.
After some deliberation, the group
decided that the predetonation threat
posed by 240 made the use of pluto-
nium in the gun-tvpe bomb impracti-
cable and work on this system should
be suspended inimediatclv. With this
decision, even greater urgency was
placed on the development of a work-
able implosion weapon, in which the
240, because of the higher velocities
involved, would be unlikely to cause
predetonation.^ ^
Abandonment of the plutonium
gun compelled General Groves to
revise his predictions on when an
atomic weapon would be ready for
employment against the enemy. In a
progress report to General Marshall
in early August, he presented a re-
vised timetable of weapon produc-
tion: five to eleven implosion bombs
in the period from March through
June 1945, with an additional twenty
to forty implosion bombs of the same
size by the end of the year. He cau-
tioned, however, that this schedule
would not apply "if experiments yet
to be conducted with an implosion
type bomb do not fulfill expectations
and we are required to rely on the
gun type alone" and suggested that, if
this delay should occur, the first
bomb would not be ready until 1
August 1945, with one or two more
by the year's end. In Groves's opin-
ion, any delay virtually guaranteed
that the bomb would not be used
against Germany, which by the late
summer of 1944 appeared likely to be
defeated within a few months. And to
many, even the bomb's use against
Japan seemed doubtful. ^^
'» Groves Diarv, 17-18 Jul 44. 1,RG; I.trs, Oppen-
heimer to Gonani. 11 Jul 44, and Tolman to
Groves, 21 Jul 44, OSRD; Ltr, Oppenheimer to
Groves, 18 Jul 44, Admin Files. Gen C:orresp.
400.17 (Mfg-i'rod-Fah), MDR.
'^QiK.tation from MFC. Rpt, 7 Aug 44. MDR.
Groves continued to hold to the idea that the Ger-
mans might soon be readv to use an atomic weapon
against the Allies and, therefore, that the Americans
must continue to be prepared to counter this threat
510
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Through the remaining months of
1944 and the first half of 1945, pro-
grams to perfect the uranium gun and
implosion principle absorbed the
major energies and resources of the
reorganized laboratory. As predicted
by the Los Alamos scientists, develop-
ment of the gun moved ahead
smoothly with few serious problems.
Experiments by the laboratory's
physicists proved the correctness of
earlier estimates of the critical mass
of the U-235 metal required for the
gun and the gun group conducted
successful firing tests, using a full-
sized tube and substituting U-238 for
U-235.
Implosion, by way of contrast, con-
tinued to be afflicted with doubts and
uncertainties. Progress toward achiev-
ing sufficient symmetry in implosion
was discouragingly slow. Of the vari-
ous implosion bomb designs, that
proposing the use of explosive
"lenses" appeared most feasible. ^^ A
more accurate assessment was
achieved with the first tests: Results
were so unpromising that in Decem-
ber 1944 Groves and Conant con-
cluded that U-235 should not be used
with their own atomic weapon. But Hewlett and An-
derson (Xew World, p. 253) note that eariier devel-
opments all pointed to Japan, not Germany, as the
ultimate target for the bomb. As early as May 1943,
the Military Policy Committee (see MPC Min, 5 May
43, OGC. Files, Gen Corresp, MP Files, Fldr 23, Tab A,
MDR) concluded that the optimum target would
be the Japanese fleet anchored at Truk. Then in
September of that year choice of the new B-29,
scheduled for employment in the Pacific Theater,
over the British Lancaster seemed to imply that the
bomb was to be used against Japan. See Ch. XXVI.
"Tubes, shaped like optical lenses and filled with
high explosives, were placed in a symmetrical pat-
tern around the active material (Pu-239). When the
explosives detonated, thcv created an inward blast
that compressed the active material until it reached
a critical mass.
in an implosion bomb but be con-
served for the certain-to-work gun.^"*
As the new year opened, surprising
developments dispelled the lingering
air of discouragement. In February,
when Groves, Tolman, and Conant
visited Los Alamos, they found far
more reasons for optimism. A few
days before their arrival on the
twenty-seventh, the gun group finally
had frozen design on the U-235
weapon, indicating a usable model
would be ready by July. Implosion
also had made notable progress, and
laboratory leaders decided, in a con-
ference that Groves attended, to man-
ufacture the implosion model favored
by Oppenheimer. And to ensure at
least one implosion bomb test with
active material by 4 July, Oppen-
heimer also decided to use the Cali-
fornia Institute of Technology's
Project Camel facilities for construc-
tion of a second model with alternate
design features. At this juncture, with
data from Hanford indicating that
shipments of plutonium in quantity
would begin to arrive at Los Alamos
in May, with experiments on accurate
establishment of the critical measure-
ments on Pu-239 in progress at the
Metallurgical Laboratory, and with
construction of a much larger plant
for final purification of plutonium at
'■•Rpt, Cmdr A. Francis Birch (Gun Gp Ldr, Los
Alamos Lab), sub: Gun-assembled Nuclear Bomb, 6
Oct 45, OCG Files, Gen Corresp, MP Files, Fldr 16,
Tab E; Ltr, Oppenheimer to Groves, 30Jun 45, and
Rpt, prepared bv Bristish scientists at Los Alamos, 7
Mav 45, OCG Files, Gen Corresp, MP Files, Fldr 17;
Ltrs, Oppenheimer to Groves, 6 Oct and 14 Nov 44,
.\dmin Files, Gen Corresp, 600.12 (Research); Ltr,
Oppenheimer to Groves, 8 Dec 44, OCG Files, Gen
Corresp, MP Files, Fldr 19, lab D. All in MDR. Rpt,
Conant, sub: Summary of Trip to \, Dec 44, OSRD.
Groves Diary. 19 Dec 44, LRG. Hewlett and Ander-
son. Xew World, pp. 317-21.
WEAPON DEVELOPMEN r AND TESTING
511
Los Alamos well under way, the Trin-
ity test date now appeared feasible. ^^
Project Truiity: The Test of the Bomb
Project Trinity was the final step of
the Los Alamos weapon program, the
culmination of the laboratory's reori-
entation from research and experi-
mentation to engineering, fabrication,
and testing of an atomic device. With-
out Trinity, without the test of the
bomb, the feasibility of employing the
new weapon appeared to be much
more questionable. "If we do not
have accurate test data from Trinity,"
Oppenheimer and Kistiakowsky had
warned, "the planning of the use of
the gadget over the enemy territory
will have to be done substantially
blindly." As 1945 unfolded, the Trini-
ty mission became the central focus
for the scientists at Los Alamos. With
the bomb test now first priority, the
tempo and intensity of Trinity prep-
arations increased dramaticallv.^^
'^Rpt. Birch, sub: Gun-assembled Nuclear Bomb,
6 Oct 45, MDR; Memo, Ciroves to Secy War, sub:
Atomic Fission Bombs, 2?> Apr 45, OCG Files, MP
Files. Fldr 25. Tab M, MDR; Groves Diary, 27 Feb-
2 Mar 45, 1.RG. On the continuing program to establish
more exact measurements concerning plutonium see
Memos. Groves to Nichols, sub: Measurements
Prgm, 3 Apr 45, and Nichols to Groves, 10 Apr 45,
same sub. Admin Files, Gen Gorresp, 400.12 (Ex-
periments), MDR. On the expansion of plutonium
fabrication facilities at Los .Alamos see MDH, Bk. 8,
\'ol. 2, XVII.20-XVII.22, DASA, and Ltr. Roger
Williams ( INX Div chief, Du Pont) to Groves, 16
Mav 45, Admm Files, Gen Gorresp. 337. MDR. For
the views of the British scientists at Los Alamos on
the progress of bomb development in early 1945
see .\dmin Files, Gen Gorresp, 201 (Ghadwick),
MDR
'^Quotation from Rpt, Oppenheimer and Kistia-
kowskv, sub: Activities at Trinity, 13 Oct 44, Admin
Files, Gen Gorresp, 600.12 (Los Alamos), MDR.
Except as otherwise indicated, the section that lol-
lows on the Irinitv test is based on MDH, Bk. 8,
\'ol. 2, pp. X\1II.1-X\III.22, DASA, and Hewlett
and Anderson. .\>«' World, pp. 37(i-8(). For a popu-
In the critical months of early 1945,
making the gadget work consumed
the energies of both the bomb build-
ers and Army leaders. While the sci-
entists worked at perfecting implosion
assembly and field teams prepared
the remote Trinity test site at Alamo-
gordo, General Groves and his new
deputy commander. Brig. Gen.
Thomas F. Farrell, devoted much
time to overseeing Trinity prepara-
tions. Because of pressures of other
responsibilities, including planning
for use of the bomb against Japan and
for the postwar control of atomic
energy, Groves managed only three
hurried visits to Los Alamos during
the months of full-scale preparations
(April to July), but he was able to
maintain day-to-day contact with
bomb test developments through
timely observation reports from Far-
rell, who made several extended tours
to the Trinity site.
As Trinity preparations began,
Groves had advised Colonel Tyler,
the Los Alamos post commander, that
he must carefully coordinate plans for
development of the bomb test with
the laboratory staff and with Farrell
"so that every part of it fits into a
time schedule." As procurement
crises built up in April and May,
Groves personally intervened in expe-
diting requisition of lenses for the
implosion bomb and globe-shaped
container shells ("pumpkins") for im-
plosing test devices. In May, with a
special report by Farrell on means to
improve the procurement situation at
the New Mexico installation to guide
him, the Manhattan commander con-
lar account see Lamonl, Da\ oj Tnnity. pp. 2-13 and
72-236.
512
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Brig. Gen. Thomas A. Farrell (right)
with General Groves
tributed to the agreement with the
University of CaHfornia to hire more
procurement personnel. Finally, in
the weeks immediately preceding the
test, Groves and Farrell devoted spe-
cial attention to shipment and receipt
of active materials from Hanford and
Clinton.!"^
General Farrell represented the
Army at Trinity's first major event on
7 May — a rehearsal shot of 100 tons
of high explosives combined with a
very small amount of radioactive fis-
sion materials atop a 20-foot plat-
^^ In January 1945, after the Secretary of War had
advised the Manhattan commander that he should
select an officer who could replace him in the event
of his illness or death. Groves chose Farrell, a Corps
of Engineers officer who, in 1941, had served as his
deputy in the military construction program before
going overseas to the China-Burma-India Theater.
See Groves, Xoiv It Can Be Told, pp. 30-32; Groves
Diary, 9 Jan, 1 Feb, 23 Mar, 29 Mar (source of quo-
tation), Apr-Jun 45, passim, LRG; Memo for File,
Groves, sub: Note Taken at Mtg at Y, 27 Jun 45,
OCG Files, Gen Corresp, MP Files, Fldr 20, Tab F,
MDR.
form. Observers, including Tolman
and Oppenheimer, judged it a suc-
cessful trial run for the final implo-
sion test. It gave the various Project
Trinity teams practical experience in
performing their assignments under
difficult field conditions, demonstrat-
ed a need for improvements in the
transportation and communications
facilities, helped calibrate instru-
ments, and provided a likely indica-
tion of the amount of radioactive ma-
terials needed for the final test.^®
In early June, "Jumbo," the huge
steel container to be used in explod-
ing the first atomic device, arrived at
Trinity. General Groves had main-
tained a special interest in the design,
procurement, and shipment of the
vessel, which was moved in early
April on a special railroad car from
Barberton, Ohio, via a carefully
planned route to a railroad siding at
Pope, New Mexico. There, Trinity
workers loaded it on a massive trailer
pulled by two tractors for the 25-mile
trip to the test site. When the vessel
finally came to rest some 800 yards
from the final test tower, there it re-
mained never to be used. For by the
time of Jumbo's arrival, Los Alamos
scientists had decided to dispense
with the container, concluding that its
use would interfere with obtaining
adequate data on the nature of the
atomic explosion — the primary reason
for conducting the Trinity test.^^
'* Rpt, sub: Trinity, 14 May 45, Admin Files, Gen
Corresp, 319.1 (Trinitv Test Rpts-Misc), MDR;
Memo, Col Stafford L. Warren (MD Med Sec chieO
to Groves, sub: Analysis of Problems Presented by
Test II at Muriel (Trinity), 16 May 45, OCG Files.
Gen Corresp, MP Files, Fldr 4, Tab H, MDR;
Groves Diary, 7 May 45, LRG.
'^Trinity scientists, too, were much more confi-
dent of the success of implosion and certain that,
Continued
WEAPON DEVELOPMENT AND TESTING
513
Although 4 July had been set as the
target date for the test, few scientists
at Los Alamos were convinced it
could be met. Precise scheduling de-
pended upon bringing a tremendous
number of factors into proper juxta-
position, including weather, procure-
ment of key components and equip-
ment, production and shipment of
active material, preparation of many
experiments, and arrangement of se-
curity and safety measures. In mid-
June, Oppenheimer announced to the
laboratory's group leaders that 13
July was the earliest possible date,
with up to ten days later not unrea-
sonable. He based his estimate upon
information provided by the labora-
tory's cowpuncher committee, which
had primary responsibility for coordi-
nation and scheduling of Trinity.
Following another review of devel-
opments on 30 June, this committee
advanced the test date to 16 July to
permit inclusion of certain additional
vital experiments. Two days later,
Oppenheimer indicated to Groves
that the laboratory leaders finally had
agreed on the seventeenth. Groves,
however, objected to the later date,
pointing out that the situation in
Washington required an earlier date.
With the end of the war in Europe,
Secretary Stimson was scheduled to
depart in early July for the Potsdam
Conference, with sessions starting on
with the rapidly increasing production at the Han-
ford and Clinton Works, more active material would
be available. For further details on Jumbo see MDH,
Bk. 8, Vol. 2, p. XVIII.6. DASA; C.roves Diary, :^0
Mar 45, LRCi; Memos, (iroves to .Alburquerque Disi
Engr, sub: Irans Contract, Trinity Proj, 7 Feb 45,
C-apt Philip Firmin (Wash Liaison OHicc) to (iroves,
sub: Status of Jumbo and Special Trailer, 30 Mar
45, and Farrell to Groves, sub: Jumbo, 4 Jun 45,
Admin Files, Gen Corresp, 400 (Equipment- Trini-
ty), MDR; Groves, Xoif It Can Be Told, pp. 288-89.
the sixteenth. The Manhattan com-
mander undoubtedly had conferred
with Conant, Tolman, and Stimson's
assistants, George L. Harrison and
Harvey Bundy, all of whom favored
carrying out the test on the four-
teenth. Again Oppenheimer consulted
with the bomb test team, which re-
ported continued difficulties with the
implosion device, wiring at Trinity,
and uncertainty concerning receipt of
active material. On that basis he in-
formed Groves on 3 July that the test
date of the seventeenth must stand.
But final preparations advanced more
rapidly than expected, and Oppen-
heimer called Groves on the seventh
to announce that the test might take
place after all on the sixteenth. ^°
In the final days before the test, the
Army had the major responsibility for
completing security and safety ar-
rangements. To meet the eventuality
that the people living in towns and on
ranches in the immediate vicinity
might have to be evacuated to avoid
radioactive fallout, the Army sta-
tioned a detachment of 160 enlisted
men with vehicles at Socorro (New
Mexico) and other strategic points
along main highways a few miles
north of the site. {See Map 6.) To sup-
plement this detachment and also to
increase security, the Army detailed
about 25 CIC (Counterintelligence
Corps) members to towns and cities
up to 100 miles from the Trinity site,
with instructions to summon evacua-
2" Memo, Oppenheimer to All Gp Ldrs (Los
Alamos), sub: Trinity Test, 14 Jun 45. File No.
314.7 (Trinity), LASL; Ltr. Tolman to Groves, sub:
Prgm for Trinity Test, 17 Apr 45, .Admin Piles, Gen
Corresp, 400 (tlquipment-Trinity), MDR; Ltr. Op-
penheimer to Groves, 27 Jun 45, OSRD; Groves
Diarv, 2-4 and 7 Jul 45. LRG; Stimson Diarv, 6 Jul
45, HLS.
514
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
tion troops if they were needed and
to help circulate the Manhattan
Project's cover story about an ammu-
nition dump explosion. An officer
from Groves's headquarters had al-
ready taken this story to the com-
mander of the Alamogordo base, to
be issued as soon as the test took
place. Another project officer took up
a station in the Associated Press
office in Albuquerque to suppress any
stories that might alarm the public
unduly. Earlier, Groves had arranged
with the Office of Censorship in
Washington, D.C., to keep news of
the explosion from getting into news-
papers in other parts of the country.
Finally, the Alamogordo commander
had reluctantly acceded to the Army's
request to suspend all flights during
the test. 2^
Meanwhile, scientists and techni-
cians at the Trinity site were complet-
ing preparations. On 12 July, two sci-
entists from Los Alamos arrived in an
Army sedan with the Pu-239 core for
the implosion device. The next day a
convoy came from the Hill with the
nonnuclear components, including
the high explosives. Before the test
device assembly team moved the plu-
tonium core to the tent at the base of
the 100-foot steel shot tower. General
Farrell signed a receipt for the active
material, thus formally completing
transfer of the Pu-239 from the scien-
tists to the Army for use in the test.
With all components in place except
the detonating system, workers re-
moved the tent and a hoist lifted the
device to a metal shed on a platform
at the top of the tower. The detona-
tor group then completed the firing
circuit and other technicians added
apparatus for experiments. By five in
the afternoon of the fourteenth, the
device was ready for the test.^^
The next day, a Sunday, Trinity
crews carried out last-minute inspec-
tions and observers checked into the
base camp, about 10 miles south of
the test tower. OSRD Director Vanne-
var Bush and Conant arrived from
Pasadena with General Groves; Army
sedans brought Charles Thomas from
Santa Fe and Ernest Lawrence, Sir
James Chad wick, and Xezv York Times
science reporter William L. Laurence,
as well as others, from Albuquerque.
Compton had decided not to come.
Tolman and General Farrell were al-
ready on hand. The large contingent
from Los Alamos, aboard three buses,
did not reach Trinity until shortly
before three in the morning of 16
July, barely in time for the originally
scheduled zero hour, 4:00 a.m. They
stepped out into blustery and rainy
weather with occasional flashes of
lightning — not the clear skies and
moderate winds the Trinity meteorol-
ogists had predicted. ^^
''Groves, Xow It Can Be Told, pp. 299-301;
Memo. 14 May 45, OCG Files, Gen Corresp, MP
Files, Fldr 4, Fab A; Notes on Interim Committee
Mtg, 18 Mav 45, OCG Files. Gen Corresp, Groves
Files, Pldr ,S, Tab O. See also materials and reports
in Admin Files, Gen Corresp, 319.1 ( Trinitv Test
Rpts-Misc). All m MDR.
^'MDH, Bk. 8, Vol. 2, pp. XVIII. 12-XVIII. 14,
DASA; Hewlett and Anderson, Xew World, p. 378;
Product Receipt No. 5502, signed by Farrell and ap-
proved bv Groves, 13 Jul 45, OCG Files, Gen Cor-
resp. MP Files, Fldr 25, Tab I, MDR. This is the re-
ceipt registering the transfer of Pu-239 from the
Los Alamos Laboratory to the Army. In a note ap-
pended by Farrell on 16 July, he states that he "wit-
nessed the expenditure of the above materials in the
first nuclear explosion thus marking the birth of the
age of atomics."
"Groves Diarv, 11-14 Jul 45, LRG; Groves, Xow
It Can Be Told. pp. 290-91.
WEAPON DEVELOPMENT AND TESTING
515
Trinity Control Dugout and Observation Post, located six miles from the
detonation point
Oppcnheimer and Groves had re-
viewed the weather situation at mid-
night and then had gone forward
from the base camp some 7,000 yards
to the control dugout (10,000 yards
from the test tower) to wait with Far-
rell, physicist Kenneth Bainbridge,
who was the leader of the bomb test
team, and chief meteorologist Jack M.
Hubbard, who with Oppenheimer had
responsibility for making the final de-
cision on whether to carry out the test
as scheduled. As four o'clock ap-
proached and the rain continued.
Groves and Oppcnheimer weighed
the risks of going ahead — the likeli-
hood of heavier radioactive fallout at
some points, electrical failures from
dampened circuits, and poor visibility
for the observation airplanes. They
decided to delay the shot an hour and
a half. The rain stopped at four and
shortly before five, with wind still
blowing in the right direction, they
gave the go-ahead signal for the
test. 24
As the final countdown began,
Groves left Oppenheimer and Farrell
in the control dugout and returned to
the base camp, a better point of ob-
servation and in compliance with the
Manhattan chiefs rule that he and
Farrell must not be together in situa-
tions where there was an element of
danger. At approximately the same
time, the five Trinity scientists who
had been guarding the test device
drove away in their jeeps as bright
^^ Memo. Groves to Secy War, sub: The Test, 18
|ul 45, HB Files, Fldr 49, MDR; Groves, Sow It Can
Bf Told. pp. 291-95 and 433-40 (App. 8, which is a
516
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
lights illuminated the tower to foil
any would-be saboteurs. Precisely at
5:30 A.M., an automatic firing mecha-
nism actuated the implosion device.
Data from hundreds of instruments
recorded what occurred in that deso-
late stretch of the Jornada del
Muerto valley: the dawn of the atomic
age. It began with a brilliant yellow light
that suffused the remotest recesses of
the Trinity site and was seen as far
away as Albuquerque and Los Alamos
to the north, Silver City (New
Mexico) to the west, and El Paso
(Texas) to the south. With the light
came a sensation of heat that persist-
ed even as a huge ball of fire — like a
rising sun — took shape, then trans-
formed quickly into a moving orange
and red column. Out of this broad
spectrum of colors rose a narrower
column that rapidly spilled over to
form a giant white mushroom cloud
surrounded by a blue glow. Only as
the glow began to fade did observers
at the base camp feel the pressure of
the shock wave, but its rumble rever-
berated for more than five minutes in
the surrounding hills. ^^
The effects of this explosion on
eyewitnesses were as varied as the ob-
servers themselves. What General
Farrell, for example, saw and heard
from the control dugout was "unprec-
edented, magnificent, beautiful, stu-
pendous and terrifying. . . . The
whole country was lighted by a sear-
reprint of ihc 18 Jul 45 memorandum with some
editorial changes and without inclosures); MDH, Bk.
8, Vol. 2. pp. XVIII. 14-XVIII. 15, DASA; Memo.
Warren to Groves, sub: Safeguards for Test II at
Muriel (Trinity), 27 Jun 45, OCG Files, Gen Cor-
resp, MP Files, Fldr 4, Tab H, MDR.
2^ Hewlett and Anderson, New World, p. 379. See
also the eyewitness and other reports on the Trinity
test in Admin Files, Gen Corresp, 319.1 (Trinity
Test Rpts-Misc), MDR.
The Atomic Explosion at Trinity,
16 July 1945
ing light with the intensity many times
that of the midday sun. It was golden,
purple, violet, gray and blue. It light-
ed every peak, crevasse and ridge of
the nearby mountain range with a
beauty . . . the great poets dream
about. . . . Thirty seconds after, the
explosion came . . . followed almost
immediately by the strong, sustained,
awesome roar which warned of
doomsday. . . ." What General
Groves recalled was that "Drs.
Conant and Bush and myself were
struck by an even stronger feeling
that the faith of those who had been
responsible for the initiation and the
carrying-on of the Herculean project
had been justified. I personally
thought of Blondin crossing Niagara
Falls on his tightrope, only to me this
tightrope had lasted almost three
years, and of my repeated, confident-
appearing assurances that such a
WEAPON DEVELOPMENT AND TESTING
517
thing was possible and that we would
do it." 26
But the Manhattan commander per-
mitted himself only a fleeting moment
of relaxation. Less than half an hour
after the test shot he called his secre-
tary in Washington, D.C., to inform
George Harrison so that he could
pass on word of the test to Stimson in
Potsdam. Groves's two main concerns
were the explosive strength of the im-
plosion device and the impact of the
test on project security. There were
strong indications, Groves reported,
that the strength of the explosion was
at least "satisfactory plus" and per-
haps far greater than estimated. As to
the effects of the test on project secu-
rity, he would take the necessary
measures as soon as its impact on the
public had become apparent. By late
morning there was evidence that the
explosion had aroused considerable
excitement throughout New Mexico
and in west Texas, near El Paso.
Groves gave permission to the Associ-
ated Press at Albuquerque to release
the previously prepared cover story
with such changes as were necessary
to fit the exact circumstances of the
test:
Alamogordo, N.M.,July 16
The commanding officer of the Alamo-
gordo Army Air Base made the following
statement today:
2^ In his 18 Jul 45 memorandum (source of quo-
tations) for the Secretary of War in Potsdam de-
scribing the Trinity test in detail. Groves incorporat-
ed Farrell's description of the explosion. He also at-
tached as an inclosure Ernest Lawrence's
"thoughts" on the Alamogordo test. See HB Files,
Fldr 49, MDR. Ihe memorandum and inclosure are
also reproduced in U.S. Department of State, The
Conference of Berlin (The Potsdam Conference), 1945,
Foreign Relations of the United States, Diplomatic
Papers, 1945, 2 vols. (Washington, D.C.: Govern-
ment Pnnting Office, 1960), 2:1361-70.
Several inquiries have been received
concerning a heavy explosion which
occurred on the Alamogordo Air Base
reservation this morning.
A remotely located ammunition maga-
zine containing a considerable amount
of high explosives and pyrotechnics
exploded.
There was no loss of life or injury to
anyone, and the property damage outside
of the explosive magazine itself was
negligible.
Weather conditions affecting the con-
tent of gas shells exploded by the blast
may make it desirable for the Army to
evacuate temporarily a few civilians from
their homes. ^^
That same afternoon, news of the
momentous event reached Secretary
Stimson in Potsdam:
Operated on this morning. Diagnosis
not yet complete but results seem satis-
factory and already exceed expectations.
Local press release necessary as interest
extends great distance. Dr. Groves
pleased. He returns tomorrow. I will keep
you posted. ^^
A follow-up cable from Harrison con-
firmed the success, tentatively implied
in the first message:
Doctor has Just returned most enthusi-
astic and confident that the little boy is as
husky as his big brother. The light in his
eyes discernible from here to High Hold
and I could have heard his screams from
here to my farm.^^
^'^ The cover story released was one of several
possible versions prepared in May by personnel in
Groves's office. See Memo, 14 May 45, MDR. The
story is also reprinted in Groves, Xow It Can Be Told,
p. 301. A transcription of Groves's telephone call to
his secretarv (Mrs. Jean O'Leary) on 16 Jul 45 is in
Admin Files. Gen Gorresp, 319.1 (Trinity Test Rpt),
MDR.
28 Msg, Harrison to Stimson, 16 Jul 45, CM-
OUT-32887, OCG Files, Gen Gorresp, MP Files,
Fldr 5E, Tab A. Copy also in HB Files, Fldr 64.
Both in MDR.
2^ Msg, Harrison to Stimson, 17 Jul 45, CM-
OUT-33556, OCG Files, Gen Gorresp, MP Files,
Fldr 5E, Tab A. Copv also in HB Files, Fldr 64.
Both in MDR.
51J
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Stimson passed on this second cable
to Truman at once, explaining to the
President that Groves ("Doctor") was
convinced that the implosion bomb
("little boy") was as powerful as the
gun-type bomb ("big brother"). Proof
of its power was the fact that the light
of the explosion was visible for 250
miles (the distance from Washington
to Stimson's summer home at High
Hold on Long Island) and its sound
was audible for 50 miles (the distance
from Washington to Harrison's farm
near Upperville, Virginia). Stimson,
Truman, Churchill, and other Allied
leaders at Potsdam were quick to real-
ize that this preliminary evidence of
the enormous power of the Trinity
explosion, followed soon by more de-
tailed substantiating data from Gener-
al Groves, had introduced a new
factor that would profoundly affect
not only their own deliberations on
how to end the war with Japan but
also the whole course of international
relations in the postwar world. ^°
3° On the limited effect of the Trinity test on
project security see Notes, 1st I.t Thomas R. Moun-
tain to Mrs. O'Leary, 17 Jul 45, Admin Files, Gen
Corresp, 371.2 (Scty), MDR; Stimson Diary, 16-18
Jul 45, HLS. Subsequent detailed conclusions on
the effectiveness of the implosion device are given
m Memo, Groves to Chief of Staff, 30 Jul 45, OCG
Files, Gen Corresp, MP Files, Fldr 4, Tab C, MDR.
CHAPTER XXVI
The Atomic Bombing of Japan
The explosion of an implosion de-
vice on 16 July 1945 at Trinity provid-
ed final confirmation to America's
wartime leaders that employment of an
atomic weapon in the war with Japan
was indeed a strategic reality. Until
1945, the Army's supersecret atomic
weapon program had not been a factor
in strategic planning for carrying on
the war, either in Europe or in the
Pacific.^ The successful Allied oper-
ations against Germany in the summer
of 1944 portended that country's im-
minent collapse and obviated the need
for an atomic weapon to end the con-
flict in Europe. Because of these devel-
opments, Manhattan Project leaders
thus considered using the bomb in the
war in the Pacific and accelerated pre-
liminary planning with the Army Air
Eorces (AAF) for a possible atomic
bombing mission against Japan.
' Strategic planning lot t-mplovnu-nt of the atomic
bomb always was limited to the relatively few mili-
tar\ and civilian leaders who knew of its existence.
Most Arm\ planners remained totalK unaware of
the atomic weapon program. In the Operations Di-
vision onlv three senior oflicers — (ieneral Malin
Craig. I.t. (".en. John K Hull, and Brig, (ien. (ieorge
A. Lincoln — learned about the bomb before it was
dropped on Japan. .See Ra\ S. ('.line. \V<i\hiniiliiii
C.otnmnud Past: The Opcnitioiis Difisniii. I'.S. .\rm\ in
World War II (Washmgion. DC: C.oNernment
Printing Oflice, !<»,') li, p :i47.
Preparations for an Atomic
Bombing Mission
Preparations for the tactical em-
ployment of an atomic weapon
against Japan began in late March
1944, when General Groves first met
with General Henry H. Arnold, the
AAF commanding general.^ The
Manhattan commander briefed
Arnold, who already had some knowl-
edge of the atomic program, on the
current status of bomb development,
estimating the probable time when
bombs would be ready for use in
combat. He then reviewed the latest
technical data from Los Alamos on
^ Except as otherwise indicated, this account of
the long-range preparations for emplovmeni of the
atomic bomb in combat is based on Ms. "Historv of
the 5()9th Composite (iroiip, 17 December 1944 to
15 August 1945." 31 Aug 45, SHRC; Cert of Audit
MDK 228-46, VV-47 Spec Ord Del. 27 Sep 45,
Fiscal and Audit Files, Certs of Audit (Sup), MDR:
Historical Notes on Svc of Col Klmer F. Kirkpatrick,
Jr., With Manhattan Fro|, 1944-47, Ind lo I.lr, Kirk-
patrick to OCFHD. 30 Sep 6S. OCFHD; .MDH, Bk.
8. \ol. 2, "Technical," pp. XIX. 1-XI\. 13. DASA;
Weslev Frank Craven and Janes I.ea ('.ate, eds., '/'he
hill fir Mnttnhorn lo Snuauiki. Jiuif 1^H4 to August
1945. I he Army Air Forces in World War II, Vol. 5
(Chicago: I'niversitN of Chicago Press, 1953), pp.
704-09, ('.roves. Now It Can Hi- Told. pp. 253-62 and
277-H7: Hewlett and .Anderson, .Weir World, pp. 252-
54, 313, 317-18. 321, 334; William I.. Laurence.
Dau'N Oxer Zero: The Slon of the .ilomir Bomb. 2d ed.
enl. (Wesipoit, Conn.: (;reenw()od Press, 1977), pp.
19t')-2()t').
520
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
the likely size, weight, and configura-
tion of an atomic bomb, indicating
that the dimensions of the gun type
were reasonably well established but
those for the implosion type were still
very much in question.
The two leaders next took up the
question of what type of airplane
would be required to transport
atomic bombs. The Manhattan com-
mander noted that Oppenheimer, on
the basis of investigations carried out
at Los Alamos and Muroc Army Air
Field, had concluded that a modified
B-29 probably had the requisite
weight-carrying capacity and range.
Should the B-29, which had gone
into production in September 1943,
prove not feasible, Groves suggested
the British Lancaster would have to
be considered. This displeased
Arnold, who stated emphatically that
an American-made airplane should
carry the bombs, and he promised to
make a special effort to have a B-29
available for that purpose.^
With this assurance that the AAF
would provide the necessary air-
planes, the two leaders reached tenta-
tive agreement on a broad division of
responsibilities in making the prep-
arations for that atomic bombing mis-
sion. The AAF would organize and
train the requisite tactical bomb unit,
which, for reasons of security, must
be as self-sustaining as possible and
exercise full control over delivery of
bombs on the targets selected. Man-
hattan would receive from the AAF
whatever assistance it needed in bal-
listic testing of bombs and air trans-
portation of materials and equipment.
To facilitate close coordination be-
tween the two organizations. Groves
would continue to have as frequent
access to Arnold as he deemed neces-
sary, and Maj. John A. Derry of
Groves's staff and Maj. Gen. Oliver P.
Echols, an AAF officer already serving
as a consultant with Manhattan,
would provide day-to-day liaison.
Echols subsequently designated an al-
ternate. Col. Roscoe C. Wilson, who
since the latter part of 1943 had been
providing AAF liaison with the Los
Alamos delivery group in its work on
B-29 modification and testing.'*
In the ensuing months, General
Groves personally assisted the AAF in
developing an overall and concrete
tactical plan. As soon as the anticipat-
ed schedule of fission bomb produc-
tion was available. Groves supplied
Colonel Wilson with the crucial data.
Drawing upon estimates he had re-
cently prepared for the Military Policy
Committee's August progress report
to the Secretary of War, Chief of
Staff, and Vice President, the Manhat-
tan commander indicated to Wilson
that an implosion-type bomb might
be ready as early as January 1945 and
a gun-type bomb by June of that year.
Although these dates were slightly in
advance of those in the progress
report, they illustrate a precautionary
maneuver on Groves's part "to avoid
any possible unnecessary delay in the
use of the bomb. . . ." ^ Pending
Mirovts Diarv. 21 Mar 44, LRC.; H. H. Arnold,
Global Mission (New ^'ork: Harper and Brothers,
1949). p. 491
* On the earlier liaison arrangements with the
AAF see MPC Min, 9 Nov 43, OCG Files, Gen Cor-
resp, MP Files, Fldr 23, Tab A. MDR; MDH, Bk. 8,
\'ol. 2, pp. VII.35-VII.39, DASA. The frequent con-
sultations between Manhattan and AAF personnel
during the fall and winter of 1944 are recorded in
Groves Diary, Sep-Dec 44, passim, LRG.
^ Groves, Sow It Can Be Told, p. 256, n. 2.
THE ATOMIC BOMBING OF JAPAN
521
completion of the fission bombs,
Groves assured Wilson that, for test-
ing purposes, Manhattan would
supply the AAF with several hundred
high-explosive bombs having ballistic
characteristics similar to the implo-
sion-type model. ^
On the basis of this data, Wilson
drafted a general plan outlining the
support the AAF would provide in
preparation for the atomic bombing
mission. The AAF committed itself to
supply the personnel and equipment
for a heavy bomb squadron, with at-
tached special units as required, and
to make available an air base in the
southwestern United States for its
training. In addition, it agreed to
modify and complete delivery of four-
teen B-29's to the squadron by 1 Jan-
uary 1945; to continue flight testing
of implosion-type bombs, with related
training under direction of Manhattan
and AAF specialists; and to assist
Manhattan personnel in testing equip-
ment and assembling ballistic data. Fi-
nally, the AAF would participate in a
field inspection of a suitable site for
an overseas operating base on the
Mariana Islands in the Central Pacific.
To command the bomb combat
unit, subsequently designated the
509th Composite Group and formally
activated on 17 December 1944, Gen-
eral Arnold selected Col. Paul W.
Tibbets, Jr. Tibbets had an outstand-
ing record in flying heavy bombers in
Europe and North Africa and had
gained a special knowledge of
the B-29 as a test pilot. Because of
the great importance and secrecy of
the 509th's mission, Arnold gave the
509th commander virtual carte blanche
to select the best-qualified personnel
available.
In September 1944, Colonel Tib-
bets began to assemble the elements
of the 509th at Wendover Field {see
Map 2), an isolated air base in west-
ern Utah with adequate security and
facilities and well located for air travel
to Los Alamos and the Salton Sea
Naval Air Station."^ The 509th com-
mander devoted the next several
months to organizing his new com-
mand, consulting frequently with
Groves, Captain Parsons of the Los
Alamos ordnance group, and other
Manhattan representatives. Following
the security guidelines set forth in
Colonel Wilson's plan, Tibbets
formed the various elements of the
509th with the objective of making it
as self-sufficient as possible. Thus, he
included in the group not only a
normal B-29 unit, the 393d Bombard-
ment Squadron (VH), but also a
number of supporting elements, in-
cluding the 390th Air Service Group
(consisting of the 603d Air Engineer-
ing and 1027th Materiel Squadrons),
the 320th Troop Carrier Squadron,
and the 1395th Military Police Com-
pany (Aviation). Subsequently, for
special technical requirements, the
509th acquired the 1st Ordnance
Squadron, Special (Aviation), and the
1st Technical Detachment, War De-
partment Miscellaneous Group, a
catchall unit comprised of both civilian
and militarv scientists and techni-
^ See MFC. Rpt, 7 Aug 44, Incl to Memo, Groves
(for MFC) to Chief of Staff, same date, OCG Files,
MF Files, Fldr 25, Tab K, MDR; Groves Diary, 31
Jul and 17, 21, 29 Aug 44, LRG.
^ I.OS Alamos personnel, given the task of con-
structing bombing tables, acquired the necessary
data from field measurements taken at the Salton Sea
Naval Air Station, where an approach over water
simulated the near sea-level conditions that would
be encountered over Japan.
522
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
I
Little Boy, the uranium bomb dropped on Hiroshima
cians — many from the Manhattan
Project but including Army, Navy,
and AAF personnel.^
At the beginning of September,
with the external shape and aircraft
requirements of the three basic bomb
models — one of the U-235 gun type
(now designated Little Boy instead of
Thin Man) and two of the Pu-239 im-
plosion type (Fat Man) — now frozen,
the AAF started training the bomb
drop squadron and, with assistance
from Los Alamos technicians, com-
pleted necessary modifications on the
B-29. While awaiting delivery of the
first planes, scheduled under Colonel
Wilson's plan to be on the thirtieth of
^ For further details on organization and composi-
tion of the 509th see Ms, "Hist 509th Comp Gp,"
pp. 1-2 and 8-11, SHRC, and the unit's own post-
war publication, 50911) Pictorial Album: Wntteii and
Published by and for the Members of the 509th Composite
Group, Tiuiau, 1945, ed. Capt Jerome J. Ossip (Chi-
cago; Rogers Printing Co., 1946). By the summer of
1945, the 509th had substantially exceeded the au-
thorized personnel of 225 officers and 1,542 men.
the month, the squadron underwent
training that emphasized ground and
air techniques for handling atomic
bombs.
In October, only days past the
scheduled delivery date, the 393d re-
ceived the first modified B-29's out
of a production lot of fifteen (one
more than originally requested).
W'ithout delay, a continuing series of
essential test drops commenced at
Wendover. Over the next few
months, these tests furnished critical
information on ballistics, electrical
fusing, flight performance of electrical
detonators, operation of aircraft re-
lease mechanisms, vibration, and tem-
peratures, as well as provided bomb
assembly experience. But, perhaps
more importantly, they revealed cer-
tain weaknesses in the original modi-
fications and defective performance in
the flying capabilities of the big
bombers.
THE ATOMIC BOMBING OF JAPAN
523
Fat Man, the implosion bomb dropped on Xagasaki
Because B-29's were in very short
supply, the AAF's lower echelons dis-
played some reluctance to satisfy the
Manhattan request for replacement of
the inadequate planes. In December,
shortly after the 393d Squadron was
detailed to Batista Field, Cuba, for
two months of special navigational
training, Groves decided to appeal
directly to General Arnold about
the B-29 problem. Without hesita-
tion, the AAF chief responded em-
phatically that the 509th Composite
Group would get as many new planes
as it required. "In view of the vast na-
tional effort that had gone into the
Manhattan Project," as Groves later
recalled Arnold's words, "no slip-up
on the part of the Air Force was
going to be responsible for a fail-
ure." ^ After the 393d returned to
Wendover, the fliers continued to
gain experience during tests with
(;i<)\es. Sow II Can He Told. p. 25';
dummy bombs of various types. Final-
ly, in the spring of 1945, the second
lot of fifteen greatly improved ver-
sions of the B-29 reached the air
base, and training and ballistic tests
proceeded at a more intensive pace.
The Overseas Operating Base
With training of the 509th Compos-
ite Group and the Los Alamos pro-
gram for testing bomb models well
under way, project leaders turned
their attention to establishing a base
of operations for the 509th in the Pa-
cific Theater. At the end of December
1944, Manhattan and AAF officials,
including Groves and Arnold, met to
discuss plans for moving the 509th
overseas. The AAF recommended
that leaders of the Twentieth Air
Force in the Marianas — at the time
the only feasible location for the
509th base — be informed of the
atomic bomb mission. With permis-
524
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
sion from General Marshall, Groves
accepted the AAF's offer to have Brig.
Gen. Lauris Norstad, its assistant
chief of staff for plans who would be
visiting Pacific bases in January 1945,
brief Lt. Gen. Millard F. Harmon,
deputy commander of the Twentieth
Air Force, and two of his staff offi-
cers. (Groves had to repeat the brief-
ing again for Lt. Gen. Barney McK.
Giles, who in May became Twentieth
Air Force deputy commander after
Harmon and the two staff officers dis-
appeared in a flight from Guam to
Washington, T>.C.)^^
The meeting reemphasized the
need for also informing the Navy
commanders in the Pacific of the
atomic bomb mission, as Navy sup-
port in the immediate area of oper-
ations would be indispensable. Fur-
thermore, Admiral Chester W.
Nimitz, Commander in Chief, Pacific
Ocean Areas (CINCPOA), had learn-
ed of the imminent arrival of the
509th in his theater and was asking
questions concerning its mission. In
February, Groves arranged with Rear
Adm. William R. Purnell of the Mili-
tary Policy Committee to have
Comdr. Frederick L. Ashworth, Par-
sons' operations officer and military
alternate in charge of field operations
at Wendover, visit Nimitz's headquar-
ters on Guam. Ashworth briefed
Nimitz, who in turn informed two
staff members of the 509th mission. ^^
Groves also had instructed Com-
mander Ashworth to inspect carefully
both Guam and Tinian as possible
sites for the 509th base operations.
General Norstad had recommended
Guam, citing its excellent deepwater
harbor and maintenance facilities. But
Guam was 125 miles farther from
Japan than Tinian — a critical factor
considering the heavy load the B-29
would be carrying. Ashworth also
found that Guam had overtaxed port
facilities and a shortage of construc-
tion personnel to build an additional
airfield. In contrast, airfield and port
facilities under construction on Tinian
would be more than adequate for the
atomic bomb mission and would be
ready for use by the time the 509th
arrived in June. Furthermore, al-
though the Army had jurisdiction
over Tinian, the Navy's 6th Naval
Construction Brigade was available
there to build the special installations
that would be needed by the
mission. ^^
With the information he had col-
lected on Guam and Tinian, Com-
mander Ashworth reported to Groves
on 22 February. The following day
Groves wrote to Norstad, indicating
his choice of Tinian as the more suit-
able site (Map 7). Norstad concurred,
and on 24 February Groves briefed
the Military Policy Committee. By end
of the month. Navy Seabees were at
work on the base facilities. ^^
»° MPC Min, 29 Dec 44, Exhibit H (prepared by
Groves), MDR; Groves, \ow II Can Be Told. pp. 278-
79; Craven and Gate, The Pacific, pp. 530-31.
>» Llr. Groves to Chief of Staff, 30 Dec 44, OCG
Files, Gen Corresp, MP Files. Fldr 23, Tab A, MDR:
Groves, S'ow It Can Be Told. p. 277.
'2 Memo, Ashworth to Groves, sub: Base of Opns
of 509th Comp Gp, 24 Feb 45, OCG Files. Gen
Corresp, MP Files, Fldr 23, Fab A, MDR: Craven
and Gate, The Pacific, pp. 516-17 and 518-19.
'3 Groves Diarv, 22-24 Feb 45, LRG: MPC Min,
24 Feb 45, with Ashworth's 24 February memoran-
dum attached as Exhibit A, MDR: Memo, Groves to
Norstad, sub: Decisions Concerning Movement of
509th Comp Gp, 23 Feb 45, OCG Files, Gen Cor-
resp, MP Files, Fldr 5, Tab C, MDR; Craven and
Gate, The Pacific, p. 706; Groves, Sow It Can Be Told,
p. 278.
MAP 7
526
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
At the end of March, General
Groves sent the District's deputy en-
gineer. Col. Elmer E. Kirkpatrick, Jr.,
a long-time associate of the Manhat-
tan commander on Army construction
projects, to the Marianas as his per-
sonal representative with the mission
of expediting delivery of the bomb
components to Tinian and making
sure that all essential construction
work there was completed on sched-
ule. Groves had brought Kirkpatrick
to the project the previous September
for the specific purpose of preparing
him to monitor development of the
overseas operational base. Thus, in
the guise of a special assistant to
Groves, he had spent considerable
time at Los Alamos, Wendover Field,
and Kirtland Field (near Albuquer-
que), assisting in inspection of bomb
prototypes, observing the training of
the 509th Composite Group, and
helping to plan shipment of essential
equipment and bomb components to
Tinian.^*
As soon as Kirkpatrick arrived on
Guam, he went to Admiral Nimitz
with a letter of introduction from
Chief of Naval Operations Admiral
Ernest J. King that explained his mis-
sion. Nimitz then assigned a member
of his own staff, Capt. Thomas B.
Hill, as Kirkpatrick's contact at
CINCPOA headquarters. Kirkpatrick
'■* Historical Notes .... Incl to Ltr, Kirkpatrick
to OCEHD, 30 Sep 68, OCEHD; List of Duties . . .
of Liaison Off to 509th Comp Gp. Incl to Memo,
Maj John A. Derry (Groves's Asst for Proj Opns) to
Groves, sub: Discussion of 5 Mar With Norstad, 10
Mar 45, OCG Files, Gen Gorresp, MP Files, Fldr 5,
Tab C, MDR: Groves, \ow It Can Be Told, p. 279.
Colonel Kirkpatrick first worked with Groves in the
Construction Division of the Quartermaster Corps.
He came to the Corps of Engineers when the Con-
struction Division was transferred to the Engineers
in December 1944.
also delivered a similar letter from
General Arnold to Maj. Gen. Curtis
LeMay, commanding general of the
XXI Bomber Command. To maintain
the secrecy of his mission, Kirkpatrick
was identified simply as a special rep-
resentative from the War Department
General Staff to the Twentieth Air
Force and its XXI Bomber Command,
reporting to General LeMay. He was
carried as an assistant operations offi-
cer of the bomber command and
quartered with the 313th Bombard-
ment Wing, located at the same field
on Tinian that would be used by the
509th Composite Group. ^^
Kirkpatrick devoted April and May
to expediting facilities construction. A
typical problem was a delay in un-
loading ships at Tinian harbor. Kirk-
patrick notified Groves, who went to
Admiral Purnell. The Navy represent-
ative on the Military Policy Commit-
tee obtained an order from Admiral
King to Nimitz that all material for
the 509th must be unloaded as soon
as it reached Tinian. Another prob-
lem arose in constructing facilities on
Iwo Jima for transferring an atomic
bomb from one B-29 to another, in
15 Historical Notes .... Incl to Ltr, Kirkpatrick
to OCEHD, 30 Sep 68, OCEHD; Memo, Groves (to
Nimitz), 8 Mar 45, sub: Preparation and Movement
of Personnel and Equipment to Tinian, OCG Files,
Gen Gorresp, MP Files, Fldr 5, Tab C, MDR.
Groves states in a note at the bottom of page 1 of
this memorandum that he had intended to show it
in person to Nimitz, who was in Washington attend-
ing strategy meetings on the war in the Pacific, but
he was unsuccessful in securing an appointment.
Consequently, at Groves's direction. Colonel Kirk-
patrick memorized the contents of the memoran-
dum before leaving on his trip to the Marianas and
subsequentlv passed on the information to Nimitz at
a meeting on Guam in early April. See also Craven
and Gate, The Pacific, pp. 706-07. The Air Force his-
torians mistakenlv identify Kirkpatrick as a "Twenti-
eth Air Force engineer."
IHE Al OMIC BOMBING OF JAPAN
527
the event a bomber en route to Japan
should have to make an emergency
landing there. Kirkpatrick had ar-
ranged to have these faciHties com-
pleted by 1 July, but an inspection by
a project officer there as of that date
revealed that virtually nothing had
been done. Kirkpatrick informed Cap-
tain Hill, and prompt action was
taken. 16
In early May, Kirkpatrick came back
to the United States for conferences
with Groves and with personnel work-
ing on design and delivery of the
bomb. He visited Captain Parsons at
Los Alamos and other project officials
there and at Wendover Field and the
Inyokern test site. When Kirkpatrick
returned to Tinian toward the end of
the month, he found the first ele-
ments of the 509th arriving there.
The group brought with it a number
of C-54 transport planes, which were
soon operating as a continuous shut-
tle service to the United States main-
land, greatly facilitating movement of
personnel and urgently needed equip-
ment. By mid-July, all elements of the
group had reached Tinian, including
the 1st Technical Detachment com-
prised chiefly of civilian specialists
from Los Alamos, some of whom had
been brought temporarily into mili-
tary service. Commanded by Parsons,
the detachment furnished and tested
weapon components for the 509th,
supervised assembly of bombs, and
checked out completed units, careful-
ly inspecting them in bomb bays
before planes took off. Frequent com-
munication with Los Alamos threat-
ened project security, so Groves dis-
CoL. Elmer E. Kirkp.atrick, Jr.
patched Lt. Col. Peter de Silva, chief
security officer at Los Alamos, to
Tinian to establish effective security
measures for the detachment, and
John H. Manley, a Los Alamos physi-
cist, to Washington, D.C., to serve as
point of transmission for all project
messages to Tinian. ^^
Meanwhile, the 509th's combat
crews were undergoing intensive
flight training. This involved practic-
ing navigation missions to Iwo Jima
and making bomb runs to nearby is-
lands still in enemy hands, using
high-explosive projectiles with Fat
Man's pumpkin shape. At the end of
1^ Historical Notes .... Iiul t(
to OCKHi:). 30 Sep 68, OC.KHD, C,
Told. pp. 280-81.
I.ti,
Kirkpatiick
Xoir II Can
I'' Historical Notes .... Irui to Ltr, Kirkpatrick
to OCEHD, 30 Sep 68, OCFIHD; Memo, Kirkpatrick
to Groves, 26 Mav 45, Admin Files, Gen Corresp.
201 (Gen), MDR; Memo, de Silva to Ll Col John
Lansdale. Jr. (Groves's Spec Asst for Sctv), 28 Jiin
45, Admin Files, Gen Corresp, 371.2 (Sctv), MDR:
Groves Diarv, 10 Mav and 31 Jul 45, l.RG; MDH,
Bk. 8, \ol. 2. pp. XIX.5-XIX.8, DASA; Groves, Xow
n Can Be Told. pp. 282-83.
528
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
training, which lasted three weeks, the
crews in late July began a series of
combat strikes over Japan to gain fa-
miliarity with target areas and mission
tactics and also to accustom the Japa-
nese to the appearance of small for-
mations of B-29's flying at a great
height. Using the pumpkin-shaped
bombs, the 509th achieved excellent
results against enemy towns, most of
which had been hit by previous B-29
strikes. These towns — Koriyama, Na-
gaoka, Toyama, Kobe, Yokkaichi,
Ube, Wakayama, Maizuru, Fukushima,
and Niihama — were in the general
vicinity of those communities select-
ed earlier as targets for atomic
bombing. ^^
The Bombing Targets
In the late spring and early summer
of 1945, Manhattan and AAF repre-
sentatives met in Washington and Los
Alamos for the purpose of choosing
targets for the 509th's atomic bomb-
ing mission. Normally the selection of
specific bombing targets was a re-
sponsibility of the highest echelons in
a theater of war. But in April, after
briefing President Truman on the
atomic program, General Marshall de-
cided that the nature of Manhattan's
security requirements and its inher-
ently unique technical problems made
it imperative for project leaders to
have a major voice in the choice of
targets, subject to final approval by
himself and the Secretary of War.
Hence, instead of assigning the task
to the War Department General
Staffs Operations Division, the Army
Chief of Staff turned over this respon-
sibility to General Groves. ^^
Although the Manhattan command-
er had not anticipated Marshall's deci-
sion, he moved immediately to carry
out his new responsibility. After con-
ferring with General Arnold, he and
General Norstad selected a target
committee. The committee included
two members of Groves's staff (Gen-
eral Farrell, who served as de facto
chairman when Groves was not
present, and Major Derry), an AAF
officer (Col. William P. Fisher), and
five technical experts (John von Neu-
mann, Robert R. Wilson, and William
G. Penney, a member of the British
team at Los Alamos, all from the
Manhattan Project, and Joyce C.
Stearns and David M. Dennison from
the AAF. 20
At the opening meeting of the
target committee on 27 April, Groves
briefed its members, first emphasizing
the need for the highest degree of se-
crecy in its deliberations and then
laying down some general guidelines
for selection of targets. He suggested
that they choose four targets and in-
dicated that General Marshall had
pointed out that ports on the west
coast of Japan, vital to that country's
communications with the Asiatic
mainland, should not be overlooked.
General Norstad then told the com-
mittee that the Twentieth Air Force
would provide it with whatever sup-
port it needed, including related
'* Craven and Gate, The Pacific, pp. 708-09; Ms,
"Hist 509th Comp Gp," pp. 50-55 and 58-61,
SHRG; Memo, de Silva to Lansdale, 28 Jun 45,
Admin Files. Gen Gorresp, 371.2 (Sctv), MDR.
>9 Groves Diary, 23 Apr 45, LRG; Groves, Now It
Can Be Told, pp. 266-67.
20 Groves Diary, 23 Apr 45, LRG; Groves, Now It
Can Be Told, pp. 266-68; Hewlett and Anderson,
New World, p. 365.
THE ATOMIC BOMBING OF JAPAN
529
information, operational analyses,
maps, and targets data.^^
The second committee meeting
took place on 10 May in Los Alamos,
where committee members had an
opportunity to hear from the scien-
tists and technicians who had worked
on the bomb. At the third meeting in
Washington on 28 May, Colonel Tib-
bets and Commander Ashworth, who
had returned from Tinian for consul-
tation, and scientific adviser Richard
C. Tolman provided further data. The
committee carefully considered vari-
ous criteria: the maximum range for
the loaded B-29 aircraft; the need for
visual bombing; likely weather condi-
tions; and expected damage. The last
criterion weighed heavily on the com-
mittee, for it pointed up the necessity
to select targets where the bomb
would produce the maximum damage
and hence have the profoundest
impact upon enemy morale. Project
scientists had indicated that the bomb
would most likely achieve the desired
results if it were dropped on densely
built-up areas of significant value to
the Japanese war effort. They also
had emphasized that the targets
should not have been bombed previ-
ously, so the effects might be assessed
more accurately. ^^
Before concluding its 28 May meet-
ing, the committee recommended
four targets to General Groves, who
promptly approved all of them. The
choices were Kokura Arsenal, one of
Japan's largest munitions plants, cov-
^' (iroves Diarv, 27 Apt 45, I.RG; Notes on
Target Committee Mtg, 27 Apr 45, OCG Files, Gen
(.orresp, MP Files. Fldr 5. 1 ah 1). Mi:)R.
"Notes on Target (.oiniiiiitee Mtg, 27 Apr and
28 Mav 45. MDR, Ms, Manhaiian Fngineer District,
"The Atomic Bombings of Hiroshima and Naga-
saki," June 1946, pp. 5-8, TG; Groves, Xow It Can
Be Told, p. 270."
ering an area of 8 million square feet;
Hiroshima, a major military embarka-
tion port and convoy assembly point
with a local army headquarters, rail-
way yards, storage depots, and some
heavy industrial plants; Niigata, an
important seaport with significant in-
dustrial and commercial facilities, in-
cluding an aluminum reduction plant,
a large ironworks, an oil refinery, and
a tanker terminal; and Kyoto, with a
concentrated 3-square-mile industrial
area and a population of about one
million people. As soon as he re-
ceived the committee's list. Groves
prepared a plan of operations for
General Marshall based upon the
identified target choices. ^^
On 30 May, before delivering the
plan of operations to General Mar-
shall, Groves visited the Secretary of
War on other business. The Secretary
used the opportunity to query the
Manhattan commander on the target
choices. As soon as Groves men-
tioned Kyoto, Stimson expressed
strong objection, noting that the city
had been the ancient capital of Japan
and was a place of great religious and
cultural significance to the Japanese.
Groves pointed out that Kyoto's large
population and military and industrial
importance made it an exceptionally
suitable target, but the Secretary of
War held fast to his views.
The target committee, nevertheless,
did not find an immediate substitute
for Kvoto. General Arnold included it
23 Groves, Sow II Can Be Told. pp. 272-73; Ltr,
Norstad through Dep Gdr, Twentieth Air F'orce, to
CG XXI Bomber Cmd, sub: 509th Gomp Gp Spec
Functions, 29 Mav 45, OGG Files, Gen Corresp, MP
Files, Fldr 5, Tab G. MDR. This letter appears to
contain the substance of (iroves's plan of oper-
ations, including reference to three of the four com-
mit lee target choices (Kokura Arsenal is missing).
530
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
in his instructions in early June to the
Twentieth Air Force to withhold con-
ventional bombing of the four select-
ed targets. So did Groves in late June,
when he requested General Marshall
to inform General Douglas MacArthur
and Admiral Nimitz to refrain from
attacking the target cities, but prob-
ably with the intention of making cer-
tain that Kyoto was not subjected to
ordinary bombing. The Manhattan
commander endeavored to change
Stimson's mind on a number of occa-
sions, but the Secretary remained ad-
amant. Finally, on 21 July, Stimson,
who was in Germany attending the
Potsdam Conference, received a cable
signed by special assistant George L.
Harrison but certainly inspired by
Groves: "All your local military advi-
sors engaged in preparation definitely
favor your pet city and would like to
feel free to use it as first choice if
those on the ride select it out of 4
possible spots in the light of local
conditions at the time." ^* After con-
ferring with President Truman, Stim-
son replied: "Give name of place or
alternate places, always excluding the
particular place against which I have
decided. My decision has been con-
firmed by highest authority." ^^
When the atomic bomb directive was
issued to the United States Army
Strategic Air Forces (USASTAF) on 25
July, Nagasaki had replaced Kyoto on
the target list.^^
2"* Msg, Harrison to Stimson, 21 Jul 45, CM-
OUT-35987, OCG Files, Gen Corresp, MP Files,
Fldr 5E, Tab A, MDR.
25 Msg, Stimson to Harrison, 23 Jul 45, CM-IN-
23195, OCG Files, Gen Corresp, MP Files, Fldr 5E,
Tab C, MDR.
2^ Ltr Directive, Gen Thomas T. Handv (Act
Chief of Staff) to Gen Carl A. Spaatz (CG USA-
STAF), 25 Jul 45; Memo, Groves to Norstad, 30
May 45; Memo, Groves to Chief of Staff, 30 Jun 45.
The Decision To Use the Bomb
Meanwhile, the question of military
employment of the bomb against
Japan came up for consideration by
the Interim Committee, a temporary
body appointed by Stimson in May
1945 at the urging of project leaders
and with the approval of the Presi-
dent. The committee's function was to
advise and report on atomic energy
matters. Membership was comprised
of the Secretary of War, as chairman;
George Harrison, as alternate chair-
man; former War Mobilization Direc-
tor James F. Byrnes, representing the
President; Vannevar Bush; James B.
Conant; MIT President Karl T.
Compton; Assistant Secretary of State
for Economic Affairs William L. Clay-
ton; and Under Secretary of the Navy
Ralph A. Bard. At its first meeting on
the ninth, Stimson outlined the pa-
rameters of the committee's broad au-
thority— from advising on wartime
controls and publicity releases to
making recommendations on postwar
policies concerning research, develop-
ment, and control of atomic energy
(including legislation). He did not
mention that the committee would
also advise on the military use of the
bomb, but the interrelationship be-
tween this aspect of atomic energy
and war and postwar controls made
All in OCG Files, Gen Corresp, MP Files, Fldr 5,
Tab B, MDR. Stimson Dairy, 30 May, 6 Jun, 22 and
24 Jul 45, HLS. In the entry of 30 May, Stimson
mentions the conference on S-1 but says nothing
about targets. Groves Diary, 30 May 45, LRG. Stim-
son and Bundy, On Active Sennce, p. 625. Groves,
AW // Can Be Told, pp. 273-76. Nagasaki, the city
substituted for Kyoto on the bomb target list, was a
major military port — one of Japan's largest ship-
building and repair centers — and a producer of
naval ordnance.
THE ATOMIC BOMBING OF JAPAN
531
^
'"^
m
^',
•^•^'' ^
^^■1
7
. \
, , s . ■ . •■ - - 1
f
^
General Groves Checking Location of Bombing Targets
its involvement in that decision
almost inevitable. ^^
At its next meeting on the four-
teenth, the Interim Committee estab-
lished a scientific panel, comprised of
Oppenheimer, Fermi, Arthur Comp-
ton, and Lawrence. This group pre-
^^ See Ch. XXVII for a detailed discussion of the
Interim Committee's activities in the preparation of
press releases and public statements, and in plan-
ning for postwar controls and legislation. On the
committee's organization and first meeting see Stim-
son Diary, 25 Apr and 2-3 and 8-9 May 45, HLS;
Memo, Bundy to Secy War, 3 Mar 45, OCG Files,
Gen Corresp, MP Files, Fldr 9, Tab A, MDR;
Groves Diary, 9 May 45, LRG. See also in MDR, HB
Files, the following: Notes on Interim Committee
Mtgs, 9 and 17 May 45, Fldr 100; Interim Commit-
tee Log, 9 May 45, Fldr 98; Ltrs, Secy War to
Conant, 4 May 45, and Conant to Secy War, 5 May
45, Fldr 69; Memo, Harrison to Secy War, sub: In-
terim Committee on S-1, 1 Mav 45, Fldr 69.
sented its views on the technical and
political aspects of atomic energy at
the fourth meeting of the committee
on the thirty-first, which Generals
Groves and Marshall attended. While
recognizing that use of the bomb was
essentially a military matter, the panel
members nevertheless offered their
opinions concerning the way it should
be employed and the likely effects it
would have on the targets selected.
Oppenheimer closed the panel's
briefing by emphasizing that the
atomic bomb would have a different
impact from any previous weapon be-
cause "the visual effect . . . would be
tremendous, it would be accompanied
by a brilliant luminescence which
would rise to a height of 10,000 to
532
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
20,000 feet, [and] the neutron effect
. . . would be dangerous to life for a
radius of at least two-thirds of a
mile."
Taking a moment to reflect on the
discussion of targets and effects. Sec-
retary Stimson proffered the conclu-
sion that the atomic bomb should be
used against Japan with no advance
warning and, while not restricting the
target to a civilian area, should be
employed in such a way as "to make a
profound psychological impression on
as many of the inhabitants as possi-
ble." Both committee and panel
members generally agreed, and the
discussion continued. Conant sug-
gested that the "most desirable target
would be a vital war plant employing
a large number of workers and closely
surrounded by workers' houses," and
Stimson indicated that was the type of
target he also visualized. When Op-
penheimer proposed that several si-
multaneous strikes would be feasible.
Groves strongly objected. Such tac-
tics, he stated, would eliminate the
possibility of "gaining additional
knowledge of the new weapon at each
successive bombing . . . , would re-
quire a rush job on the part of those
assembling the bombs and might,
therefore, be ineffective, [and] the
effect would not be sufficiently dis-
tinct .from . . . regular Air Force
bombing. . . ." ^®
Panel members left the 31 May
meeting with the Secretary's instruc-
tions that they should prepare sug-
gestions on postwar organization, re-
search, and development for the In-
terim Committee. Arthur Compton
was very much aware that there was
great concern and substantial differ-
ence of opinion among Metallurgical
Laboratory scientists on how to deal
with postwar problems and programs.
And in the interest of maintaining the
morale of his scientific staff, he re-
quested suggestions from them on
the future of atomic energy, which he
might then pass on to the scientific
panel.
Among the various reports Comp-
ton received in the following two
weeks was one prepared by a group
of scientists under the leadership
of James Franck, an outstanding
German-refugee physicist who had
come to the Metallurgical Laboratory
from the staff of the University of
Chicago. Centering on the political
and social ramifications of an atomic
bombing, the Franck report favored
eventual international control of
atomic energy as the only safe solu-
tion. Using the bomb against Japan
without adequate warning, the report
cautioned, would arouse great ani-
mosity against the United States and
isolate her morally among the nations
of the world, making establishment of
international controls much more dif-
ficult. As an alternative, the report
advocated a demonstration of the
bomb in an uninhabited area, point-
ing out that this action would not pre-
vent later military use of the bomb
against Japan, if this were necessary. ^^
^* Quotations in this and the preceding paragraph
from Notes on Interim Committee Mtg, 31 May 45,
MDR. See also Memo, 1st Lt R. Gordon Arneson
(Interim Committee Secv) to Harrison, 6 Jun 45,
HB Files, Fldr 100, MDR; Hewlett and Anderson,
Xeu' World, pp. 356-59.
^*The Franck report, signed by Franck and six of
his fellow scientists at the Metallurgical Laboratory
(David J. Hughes, James J. Nickson, Eugene Ra-
binowitch, Glenn Seaborg, Joyce Stearns, and Leo
Szilard), was published under the title "Before Hiro-
shima" in Bulletin of the Atomic Scientists. 1 May 46.
See also Compton, Atomic Quest, pp. 233-36; Hewlett
and Anderson, Xew World, p. 366.
THE ATOMIC BOMBING OF JAPAN
533
Some members of the Franck group
did not feel that they could depend
upon the scientific panel to bring
their views to the attention of govern-
ment leaders, so Franck himself car-
ried the report to the capital. There,
Arthur Compton saw to its delivery
on 12 June to George Harrison's
office at the War Department. Harri-
son, acting in his capacity as alternate
chairman of the Interim Committee,
decided that the Franck report should
be turned over to the scientific panel
for possible inclusion in the latter's
own report on the use of the bomb.
Both the Franck report and the sci-
entific panel's report were discussed
at the meeting of the Interim Com-
mittee on the twenty-first. In contrast
to the Franck report's recommenda-
tion that the bomb be used first in a
technical demonstration made public
to other countries, the panel's
report — which acknowledged the dif-
fering views of project scientists on
how the bomb should be employed —
concluded that it could "propose no
technical demonstration likely to
bring an end to the war . . . [and] see
no acceptable alternative to direct
military use." ^° After considering the
panel's views, the Interim Committee
reaffirmed its earlier position "that
the weapon be used against Japan at
the earliest opportunity . . . without
warning, and ... on a dual target,
namely a military installation or war
plant surrounded by or adjacent to
homes or other buildings most sus-
ceptible to damage." ^^
On 21 July, Stimson received not
only Groves's detailed report on the
successful test at Trinity, delivered by
special courier, but also cables from
Harrison indicating that atomic
bombs would be ready sooner than
expected. He promptly passed the
word to American and British leaders
at Potsdam, including President
Truman, Prime Minister Churchill,
Secretary of State Byrnes (as of 3
July), General Marshall, and Lord
Cherwell, all of whom were elated by
the news. On the twenty-fourth, Stim-
son showed the President the tenta-
tive plan of operations, which Groves
had prepared and which he (Stimson)
had received the day before from
Harrison. This plan called for the first
atomic bombing mission any time
after 1 August, subject to completion
of preparations and suitable weather.
Truman accepted the plan without
reservation, for, Stimson recalled,
"that was just what he
wanted. . . ." ^^
^"Rpi. Scientific Panel, sub: Recommendations on
the Immediate Use of Nuclear Wpns, 16 Jun 45.
This report, one of three prepared bv the panel on
various aspects of the control and empl<)\nient of
atomic energy, is attached to Ltr, Oppenheimer (for
Scientific Panel) to Secy War, Attn: Harrison, 16 Jun
45, OCG Piles, Gen Corresp, Groves Files, Pldr 3,
Tab T, MDR.
'^ Notes on Interim Committee Mtg, 21 Jun 45,
MDR; Ltr, Compton to Stimson, 12 Jun 45, and Incl
(unsigned copv of Franck report), OCG Files, Gen
Corresp, Groves Files, Fldr 3, Tab T, MDR; Interim
Committee Log, 12 and 15-16 Jun 45, HB Files,
Fldr 98, MDR; Compton, Atomic Qitest. pp. 233-36
and 239-41; Hewlett and Anderson. Sew World, pp.
365-69.
32 Stimson Diary, 16-19 and 21-24 Jul 45 (quota-
tion from 24 Julv), HLS. Memo. Groves to Secv
War, sub: The Test, 18 Jul 45. HB Files, Fldr 49,
MDR. Msgs, Harrison to Secv War, 21 Jul 45, CM-
()t'T-35988, Tab B; Secy War to Harrison, 23 Jul
45, CM-IN-23487. Tab C; Harrison to Secv War,
23 Jul 45, CM-Ol'T-36792 and CM-OlT-37350,
lab A, OCG Files, Gen Corresp, MP Files, Fldr 5E,
MDR (copies in HB Files, Fldr 64, MDR). Groves,
\'ou< It Can Be Told, pp. 309-10. Iruman later re-
called that he had reached a decision in favor of
using the atomic bomb on the basis of recommen-
ConliiuK-d
534
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
On 25 July, General Marshall sub-
mitted to Stimson the draft of the
USASTAF directive to proceed with
the atomic bombing of Japan, and the
Secretary — with assurance that all the
Allied leaders favored going ahead
with employment of the bomb — ap-
proved it. The directive carefully
spelled out the procedures that were
to govern the atomic bombing
mission:
1. The 509 Composite Group, 20th Air
Force will deliver its first special bomb as
soon as weather will permit visual bomb-
ing after about 3 August 1945 on one of
the targets: Hiroshima, Kokura, Niigata
and Nagasaki. To carry military and civil-
ian scientific personnel from the War De-
partment to observe and record the ef-
fects of the explosion of the bomb, addi-
tional aircaft will accompany the airplane
carrying the bomb. The observing planes
will stay several miles distant from the
point of impact of the bomb.
2. Additional bombs will be delivered
on the above targets as soon as made
ready by the project staff. Further instruc-
tions will be issued concerning targets
other than those listed above.
3. Dissemination of any or all informa-
tion concerning the use of the weapon
against Japan is reserved to the Secretary
of War and the President of the United
States. No communicjues on the subject
or release of information will be issued by
dations of his military advisers and after Churchill
had told him at Potsdam that he was convinced it
should be employed "if it might aid to end the war"
(see Harry S. Truman, Memoirs, 2 vols. (Garden
City, N.Y.: Doubleday and Co., 1955-56], 1:419).
Truman subsequently informed Air Force histori-
ans that he actually gave the order for dropping the
bombs on Hiroshima and Nagasaki in the mid-At-
lantic while returning to the United States from
Potsdam on board the cruiser USS Augusta (2-7 .Aug
45). See Ltr, Truman to Cate, 12 Jan 53, repro-
duced in Craven and Cate, The Paaftc. between pp.
712-13. For a further discussion on the decision to
use the bomb see Louis Morton, "The Decision To
Use the Atomic Bomb," in Command Decisions, ed.
Kent Roberts Greenfield (Washington, D.C.: Gov-
ernment Printing Office, 1960), pp. 493-518.
Commanders in the field without specific
prior authority. Any news stories will be
sent to the War Department for special
clearance.
4. The foregoing directive is issued to
you by direction and with the approval of
the Secretary of War and of the Chief of
Staff, USA. h is desired that you person-
ally deliver one copy of this directive to
General MacArthur and one copy to Ad-
miral Nimitz for their information.^^
Dropping the Bomb
Manhattan played an important
supporting role in the AAF's execu-
tion of the 25 July directive. At the
top level, General Groves continued
to retain a voice in the general direc-
tion of the mission, through his
access to General Arnold's staff in
Washington, through his two repre-
sentatives on Tinian (Colonel Kirk-
patrick and, as of 31 July, General
Farrell) and through Admiral Purnell,
whom Admiral King had assigned to
coordinate the bombing with Navy
commanders in the Pacific Theater.^'*
General Farrell arrived in the Cen-
tral Pacific area with specific instruc-
tions from Groves: to coordinate on-
going preparations for dropping the
first atomic bomb on Japan. Farrell
first stopped on Guam, where he con-
ferred with General LeMay, who
would shortly become USASTAF
^^ Ltr Directive, Handy to Spaatz, 25 Jul 45,
MDR. A copy of the original directive is reproduced
in Craven and Cate, The Pacific, following page 696.
See also Groves, Xow It Can Be Told. pp. 308-09.
="* Groves, Xow It Can Be Told, p. 311; Memo,
Groves to Chief of Staff, sub: Plan of Opns-Atomic
Fission Bomb, 24 Jul 45, OCG Files, Gen Corresp,
MP Files, Fldr 25, Tab P, MDR; Groves Diary, 24-
26 and 31 Jul 45, LRG; Rpt, Farrell, sub: Overseas
Opns-Atomic Bomb, ca. 15 Sep 45, Admin Files,
Rpts Pertaining to the Effects of the Atomic Bomb,
Farrell, ML^R; Testimony of Farrell in Atomic Energy
Hearings on S. Res. 179, p. 502.
THE ATOMIC BOMBING OF JAPAN
535
N
f%^ J
^r§-^^1lt
m^JiJMAM
Col. Paul W. Tibbets, Jr. (center), with Ground Crew at Tinian
chief of staff, and with Admiral
Nimitz. Moving on to Tinian, Farrell
visited Admiral Purnell and Captain
Parsons. ^^
Farrell spent considerable time with
Parsons, who talked at length about
the intensive activities of the 1st
Technical Detachment on Tinian
during the month of July. The detach-
ment, with assistance from other ele-
ments of the 509th and the Navy, had
installed the technical facilities re-
quired for assembly and testing of
bomb components, especially with
^^ Rpt, Farrell, sub: Overseas Opns-Atomic
Bomb, ca. 15 Sep 45, MDR; Historical Notes ....
Incl to Ltr, Kirkpatrick to OCEHD, 30 Sep 68,
OCEHD.
Little Boy, and had carefully checked
out the emergency reloading facilities
at Iwo Jima. Parsons also informed
Farrell about the function of his
newly formed project technical com-
mittee, namely, to assist him in plan-
ning and coordinating with AAF
elements the complex final tests and
assembly of both the gun-type and
implosion weapons.^®
36 Memo, E. J. Doll (Delivery Gp, Tinian) to Par-
sons, sub: Summary of Spec Mtg (24 Jul 45) of
Wpns Committee, 27 Jul 45; Memo, Norman F.
Ramsey (Delivery Gp, Tinian) to Parsons, sub: Sum-
marv of Spec Mtg (27 Jul 45) of Proj Tech Commit-
tee, 28 Jul 45, and Ind (Table 1, Schedule of
Events); ibid., sub: Summary of Mtg (30 Jul 45) of
Proj Tech Committee, 6 Aug 45. All in OCG Files,
Continued
536
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Component parts and active materi-
al for both types of atomic bombs
reached the detachment on Tinian
only shortly before they were actually
used in bombing missions. Those for
Little Boy arrived first. Most of its
components and the U-235 had left
Los Alamos in mid-July in custody of
Maj. Robert R. Furman, a special
projects officer from Groves's Wash-
ington headquarters, and Capt. James
F. Nolan, chief medical officer at the
New Mexico installation. They trav-
eled by automobile from Santa Fe to
Albuquerque, by airplane to Hamilton
Field near San Francisco, thence to
Hunters Point to board the cruiser
Indianapolis. Crossing the Pacific in
record time, they reached Tinian on 26
July.^"^ Two Los Alamos security offi-
cers brought the remaining compo-
nents and the rest of the active mate-
rial for Litde Boy aboard two C-54
cargo aircraft, the first arriving at
Tinian on the twenty-eighth and the
second on the following day.^®
The 509th technical teams quickly
assembled the Little Boy unit, and
Parsons requested permission from
Groves to drop it as early as
1 August. But weather conditions for
the first four days of the month were
unsuitable. During this period, the
technical teams and bombing crews
worked on an around-the-clock basis.
Tinian Files, Env B, 200 (Kirkpatrick), MDR. See
also MDH, Bk. 8, Vol. 2, pp. XIX.7-XIX.8, DASA.
^'' A Japanese submarine sank the ill-fated Indian-
apolis four days later en route to the Philippines. See
Richard F. Newcomb, Abandon Ship! Death of the L'SS
Indianapolu (New York: Holt, Rinehart and Winston,
1958).
38 MDH, Bk. 8, Vol. 2, pp. XIX.8-XIX.9, DASA;
Groves, Xow It Can Be Told, pp. 305-08; Craven and
Gate, The Pacific, pp. 714-15; Testimonies of Groves
and physicist Philip Morrison (Los Alamos Lab) in
Atomic Energy Hearings on S. Res. 179, pp. 39-40 and
234-35.
perfecting plans for delivering Little
Boy and carrying out tests on Fat
Man rehearsal units. At the same
time, components for the Fat Man ar-
rived at Tinian aboard two B-29's
that Groves had held at Albuquerque
for that purpose and plutonium active
material came in aboard a C-54.^^
Finally, on the morning of the fifth,
AAF meteorologists indicated that
visual bombing should be possible
over the target cities on the following
day, and General LeMay directed that
the Littly Boy mission would take
place on the sixth. Technical teams
loaded the bomb in the Enola
Gay B-29 aircraft and completed the
final testing of the unit. A few days
earlier bomb technicians had worked
out a method for reducing the danger
of a premature explosion by delaying
final arming until the aircraft was air-
borne. Captain Parsons, who was to
go on the flight as the bomb com-
mander, had responsibility for per-
forming this function.
The final briefing took place at
midnight, and the weather planes de-
parted for the target area. Hiroshima
was the primary target, Kokura sec-
ond, and then Nagasaki (see Map 7).
In the meantime, a C-54 had car-
ried Colonel Kirkpatrick and a crew
from the technical group to Iwo Jima
to stand by to transfer the bomb to a
spare B-29 if the strike aircraft had to
land there. *°
39 MDH, Bk. 8, Vol. 2, pp. XIX. 8 and XIX. 10,
DASA; Rpt, Farrell, sub: Overseas Opns-Atomic
Bomb, ca. 15 Sep 45, MDR; Historical Notes . . . ,
Incl to Ltr, Kirkpatrick to OCEHD, 30 Sep 68,
OGEHD; Groves Diary, 4 Aug 45, LRG; Memo,
Groves to Chief of Staff, 6 Aug 45, OCG Files, Gen
Corresp, MP Files, Fldr 5, Tab B, MDR.
40 MDH, Bk, 8, Vol. 2, XIX.8-XIX.9, DASA;
Memo, Groves to Chief of Staff, 6 Aug 45, MDR;
Continued
THE ATOMIC BOMBING OF JAPAN
537
Enola Gay at Tinian
At 0245 (Tinian time) on 6 August,
with Little Boy in her bomb bay and
Colonel Tibbets at the controls, the
Enola Gay lifted off the Tinian runway,
followed at two-minute intervals by
two observation planes carrying re-
cording instruments and scientific ob-
servers, most of them from the Man-
hattan Project. Tibbets' instructions
were to choose the target on the basis
of reports from the weather planes —
Hiroshima was preferred because it
was the one target that had no Ameri-
can prisoner-of-war camp — and, if all
were closed in, to return with the
bomb."*^
Historical Notes . . . , Incl to Ltr, Kirkpatrick to
OCEHD, 30 Sep 68, OCEHD; Craven and Gate, The
Panfic. p. 176
*^ At the end of July, General Spaatz had cabled
General Groves, calling attention to the reported lo-
cation of prisoner-of-war camps near some of the
target areas selected for atomic bombing and re-
questing advice on how this should affect his orders
to the 509th Composite Group. Groves consulted
with General Handy, the Acting Chief of Staff, and
Captain Parsons kept the log of the
flight that described in terse phrases
the progress of the historic mission:
0300
0315
0605
0730
0741
0838
0847
0904
Started final loading of gun.
Finished loading.
Headed for the Empire from Two.
Red plugs in [these plugs armed
the bomb so it would detonate if
released].
Started climb. Weather report re-
ceived that weather over primary
and tertiary targets was good but
not secondary target.
Leveled off at 32,700 feet.
All Archies [electronic fuses]
tested to be OK.
Course west.
they agreed that Spaatz should be told to disregard
the purported presence of prisoner-of-war camps in
issuing his orders. Handy, however, believed that
Stimson should be informed of this policy. .Accord-
ingly, Groves showed the Secretary of War both the
cable from Spaatz and his reply to the USASTAF
commander. Stimson, by taking no action, in effect
approved the polic\. See Groves, S'ow It Can Be Told,
pp. 312-13.
538
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
0909 Target [Hiroshima] in sight.
0915V2 Dropped bomb [Originally sched-
uled time was 0915]. Flash fol-
lowed by two slaps on plane.
Huge cloud.
1000 Still in sight of cloud which must
be over 40,000 feet high.
1003 Fighter reported.
1041 Lost si^ht of cloud 363 miles from
Hiroshmia with the aircraft being
26,000 feet high.^s
About fifteen minutes after the
bomb was dropped, Parsons radioed
back to Farrell on Tinian in a special
code: "Results clear cut, successful in
all respects. Visible results greater
than Trinity. Conditions normal in
airplane following delivery. Proceed-
ing to Tinian." Farrell promptly re-
layed this first report to Groves,
waiting anxiously in Washington, but
because of unexplained communica-
tions delays, it did not reach him until
11:30 P.M. (Washington time), 5
August, more than four hours after
the dropping of the bomb. At 4:30
the next morning Groves received a
detailed cable from Farrell, dis-
patched after return of the Enola Gay
to Tinian. This cable became the
basis of Groves's report to General
Marshall at the Pentagon and, by tele-
phone, to Stimson at home. Farrell's,
cable also provided most of the con-
firmation Groves needed to clear for
release to the press the President's
statement, prepared earlier by the In-
terim Committee. The one point on
which the cable lacked sufficient in-
formation was the amount of damage
inflicted on Hiroshima. To avoid any
chance of overstatement that might
reduce the announcement's effect on
the Japanese, Groves obtained from
General LeMay on Guam assurance
that the bomb appeared to have
caused enormous destruction. Then
at 11:00 A.M. the President's press
secretary (Truman was still en route
home from Potsdam) released the
statement to the waiting newsmen at
the W^hite House, giving the Ameri-
can people their first news of the
atomic bombing of Japan and of the
wartime project that made it
possible.*^
Meanwhile on Tinian, the 509th's
weapon assembly teams prepared for
the first Fat Man mission, scheduled
for 1 1 August. Rapid progress with
assembly of the implosion unit led
Parsons to propose to Tibbets on the
seventh that the mission be moved up
to the tenth. But forecasts indicated
that a period of bad weather was due
to begin on the tenth and last for five
days. Would it be possible, Tibbets
asked Parsons, to have the bomb
ready by the ninth? Parsons ex-
pressed uncertainty as to whether the
bomb could be safely readied in so
short a time, but agreed to try. Work-
ing without letup, the technical teams
succeeded in assembling, loading, and
checking the unit by the evening of
the eighth. Kokura was the primary
target and Nagasaki, the secondary
''^ The log is reproduced in MDH, Bk. 8, \'ol. 2,
XIX.9-XIX.10, DA.SA.
*^ Qiiote from Rpt, Farrell, sub: Overseas Opns-
Atomic Bomb, ca. 15 Sep 45, MDR. Groves, AW //
Can Be Told. pp. 320-31. Farrell's message to Groves
is reprinted on page 323. Groves's report to Mar-
shall on the bombing of Hiroshima is the memoran-
dum of 6 Aug 45, filed in MDR, OCG Files, Gen
Corresp, MP Files, Fldr 5, Tab B. The presidential
statement is in Hmi-y S. Truman, 1945. Public Papers
of the Presidents of the I'nited States (Washington,
D.C.; Government Printing Office, 1961), pp. 197-
200.
Mi'SHRooM Cloi'd Ovkr Hiroshima
540
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
objective. Niigata was excluded as
being too far away from Tinian.**
Shortly before dawn on 9 August,
the B-29 strike plane Bock 5 Car, with
Maj. Charles W. Sweeney as pilot and
Commander Ashworth as the bomb
commander, prepared to take off with
two observer aircraft. Sweeney's origi-
nal flight plan designated the same
route to Japan via the Volcano Islands
followed by the Hiroshima mission,
again to provide for an emergency
stop if needed on Iwo Jima. Again
Colonel Kirkpatrick awaited with a
bomb-loading team and a spare B-29.
Just before lift-off, the Bock^s Car crew
discovered that the fuel pump for the
plane's reserve gasoline tank in the
bomb bay was not working properly.
Normally such a mechanical problem
would have aborted the mission. But
faced with a prediction of worsening
weather and knowing the importance
to the Allied surrender negotiations
with Japan of having a second atomic
bomb attack closely follow the first,
Farrell decided to risk going ahead
with the mission. ^^
The defective fuel pump was only
one of a number of difficulties that
were to make the second atomic
bombing mission as eventful as the
first was routine. Taking off at about
0347,*^ the strike plane and accompa-
"MDH, Bk. 8, Vol. 2, XIX.lO-XIX.l 1, DASA;
Rpt, Farrell, sub: Overseas Opns-Atomic Bomb, ca.
15 Sep 45, MDR; Craven and Gate, The Pacific, pp.
718-19.
*^ Groves, Now It Can Be Told, p. 344.
*^ The 0347 takeoff time is recorded by Ashworth
in the log of the mission. Other sources vary as to
the precise moment of lift-off. Farrell states in his
15 September report that the time was 0348;
Craven and Gate, the Air Force historians, fix it at
0349 (The Pacific, p. 719); and New York Times sci-
ence reporter William Laurence, who was riding as
an observer in one of the instrument planes, record-
ed it as 0350 (Dawn Over Zero, p. 231). Ashworth's
nying aircraft did not attempt to fly in
formation because of the bad weather
between Tinian and Iwo Jima. To get
around this weather and to save fuel,
they headed separately for a rendez-
vous point at Yaku-shima off the coast
of Japan. Commander Ashworth suc-
cinctly recorded in the log of the
flight the succeeding series of events
that threatened the mission with fail-
ure and very nearly with disaster:
0900 Arrived rendezvous point at Yaka-
shima [sic] and circled awaiting ac-
companying aircraft.
0920 One B-29 sighted and joined in
formation.
0950 Departed from Yakashima [sic]
proceeding to primary target
Kokura having failed to rendez-
vous with second B-29. The
weather reports received by radio
indicated good weather at Kokura
(3/10 low clouds, no intermediate
or high clouds, and forecast of im-
proving conditions). The weather
reports for Nagasaki were good
but increasing cloudiness was
forecast. For this reason the pri-
mary target was selected.
1044 Arrived initial point and started
bombing runs on target. Target
was obscured by heavy ground
haze and smoke. Two additional
runs were made hoping that the
target might be picked up after
closer observations. However, at
no time was the aiming point
seen. It was then decided to pro-
ceed to Nagasaki after approxi-
mately 45 minutes spent in target
area.
At this point, Ashworth and Swee-
ney determined they had only enough
gasoline to make a single bombing
run over Nagasaki, if they were to
reach the closest alternate landing
log is reprinted in MDH, Bk. 8, Vol. 2, pp. XIX.ll-
XIX. 12, DASA
THE ATOMIC BOMBING OF JAPAN
541
field on Okinawa. More than one run
would require ditching Bock 's Car.
1150 Arrived in Nagasaki target area.
Approach to target was entirely by
radar. At 1150 the bomb was
dropped after a 20 second visual
bombing run. The bomb func-
tioned normally in all respects.
1205 Departed for Okinawa after having
circled smoke column. . . .
1351 Landed at Yontan Field, Okinawa.
1706 Departed Okinawa for Tinian.
2245 Landed at Tinian.
Ashworth radioed first word of the
bombing of Nagasaki to Farrell on
Tinian while Bock's Car was en route
to Okinawa, indicating some uncer-
tainty as to the results, although the
visible effects appeared to him about
equivalent to those at Hiroshima. On
Okinawa, Ashworth consulted with all
the crews and observers and conclud-
ed that the implosion bomb had been
satisfactorily placed over the target.
They reported that the flash was
brighter, the shock waves greater, and
the cloud was larger and moved up
faster than at Hiroshima. But photo-
graphs taken four hours after the
strike showed little because of the
cloud, smoke, and dust cover. Only
days later would additional photo-
graphs reveal that the entire industri-
al part of Nagasaki and a considerable
part of the residential area had been
destroyed.*"^
The Surrender of Japan
As soon as he received word of the
successful bombing of Nagasaki, Gen-
eral Groves felt certain Japan's capitu-
*■' For other accounts of the bombing of Nagasaki
see Craven and Gate, The Panfic. p. 719-21; Lau-
rence, Dauni Over Zero. pp. 228-43; (iroves, Xow It
Can Be Told. pp. 344-46.
lation would follow. He went at once
to see General Marshall to discuss
future operations against Japan. They
agreed that, in view of Stimson's
policy of using the bomb only to end
the war, shipment of materials for a
third bomb should be delayed until
13 August. When by that date the
Japanese still had not surrendered,
neither the Secretary of War nor the
Chief of Staff was available to Groves
for consultation because of the con-
tinuing negotiations for an armistice.
Groves then went to General Thomas
T. Handy, Acting Chief of Staff, and
informed him that he would order the
continued holding of all fissionable
materials in the United States, re-
questing Handy to pass this informa-
tion on to Stimson and Marshall at
the earliest opportunity. Meanwhile,
project personnel at Los Alamos and
on Tinian also continued in full readi-
ness to prepare and deliver additional
atomic bombs. ^®
The march of events vindicated
Groves in his decision. On 14 August,
President Truman received a message
from the Japanese government that
constituted full and satisfactory ac-
ceptance of the Allied terms of sur-
render, as set forth in the Potsdam
Declaration. The judicious employ-
ment of atomic bombs in tandem with
a series of warnings to the Japanese
government of more to come if it did
not yield had comprised the strategy
in the final successful maneuverings
for the surrender. To the average ob-
server in the West in mid- 1945, the
Japanese decision to comply with
Allied terms appeared to be the direct
result of the atomic bombing of Hiro-
•»8 Groves, Sow It Can Be Told, pp. 352-53.
542
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
shima and Nagasaki, the Soviet
Union's declaration of war against
Japan on 9 August, and the AlHed
promise not to alter the legal position
of Emperor Hirohito. Yet, with the
advantage of hindsight and a detailed
knowledge of developments within
Japan in the weeks preceding the sur-
render, a leading historian on the
subject makes clear that the "deci-
sion— in embryo — had long been
taking shape." *^
By the spring of 1945, the Japanese
armed forces had brought the Empire
to the brink of disaster. Broad public
support for the military had begun to
disintegrate as the people of Japan
came to realize that the very survival
of their country was threatened.
When Premier Kantaro Suzuki re-
placed General Hideki Tojo in April,
the government initiated a definite
campaign to seek an end of the war
on terms acceptable to the ruling
elite. But this campaign, begun in
June with efforts to open peace nego-
tiations through the Soviet Union,
was of little avail as long as the Japa-
nese militarists dominated the gov-
ernment and the Allies were unwilling
to guarantee the future status of the
Emperor. Only the shock impact of
the atomic bombings of Hiroshima
and Nagasaki, combined with the
Soviet entry into the war, created
"that unusual atmosphere in which
the theretofore static factors of the
Emperor could be made active in
such an extraordinary way as to work
what was virtually a political mira-
cle. ... It was the nation's good for-
time that, in spite of the existence of
a hard-headed and strongwilled corps
of fanatics, the men responsible for
the movement to terminate the war
were finally able, under the circum-
stances of 1945, to give the fullest
possible effect to the depth of appeal
in the voice of the man who is the su-
preme symbol in Japanese life and
thought." ^0
The surrender of Japan on 14
August completed the mission of
Manhattan's Project Alberta group,
assigned to the 1st Technical Detach-
ment, on Tinian. Most technical per-
sonnel of the Alberta group originally
planned to return to the United
States on the twentieth, leaving only a
small team under General Farrell that
was to go to Japan to investigate the
results of the bombing. But when
delays developed in arranging surren-
der procedures. General Groves re-
quested that essential project person-
nel remain on Tinian pending suc-
cessful completion of the occupation
of Japan. Project Alberta scientists
and technicians finally left Tinian on
7 September. Colonel Kirkpatrick and
Commander Ashworth stayed behind
to make final disposition of project
property, taking special care to return
to Los Alamos under guard or to
dump in the sea any items likely to
reveal information about the bomb.
Some project property went with the
investigating teams assembled under
General Farrell, to be used in survey-
ing the effects of atomic bombing on
Hiroshima and Nagasaki.^ ^
*^ Robert J. C. hinow , Japan 's Decision To Sunender
(Stanford, Calif.: Stanford I'niversitv Press, 1954),
p. 231.
50 Ibid., pp. 231 and 233.
5' For the official account of the closing out of
Pioject Alberta see MDH, Bk. 8, Vol. 2, p. XIX. 13,
DASA.
THE ATOMIC BOMBING OF JAPAN
543
Sunify of the Bombing Effects
The swift surrender of Japan
opened the way for American scientif-
ic teams to survey, on the ground, the
specific effects of the atomic bombing
of Hiroshima and Nagasaki. Not only
were scientists, medical personnel,
and professional military men greatly
interested in learning the results of
the first employment of atomic weap-
ons in warfare, but also the com-
manders of the occupation troops
that were scheduled shortly to move
into the two bombed cities desired a
check of the possible hazards with
which they might have to cope. Al-
though Manhattan scientists were vir-
tually sure that detonation of the
atomic bombs a considerable distance
above the ground had eliminated the
likelihood of any lingering large-scale
radioactivity in the two cities, lacking
previous experience they could not be
certain without actual inspection of
the affected areas. ^^
^^ This account of the effects of atomic bombs on
Hiroshima and Nagasaki is based primarily upon the
following sources: MDH, Bk. I, Vol. 4, "Auxiliary
Activities," Ch. 6 (Investigation of the After Effects
of the Bombing in Japan), DASA; Ms, MED, "The
Atomic Bombings of Hiroshima and Nagasaki," June
1946, LC; MED, "Photographs of the Atomic Bomb-
ings of Hiroshima and Nagasaki," June 1946, LC;
Austin M. Brues et al., comps.. General Report of
Atomic Bomb Casualty Commission, January 1947 (Wash-
ington, DC.: National Research Council, 1947); The
Committee for the Compilation of Materials on
Damage Claused by the Atomic Bombs in Hiroshima
and Nagasaki, ed., Hiroshima and Nagasaki: The Physi-
cal. Medical, and Social Effects of the Atomic Bombings,
trans. Eisei Ishikawa and David L. Swain (New
York: Basic Books, 1981); United States Strategic
Bombing Sur\ e\ , 7'he Effects of Atomic Bombs on Hiroshima
and Xagasaki (Washington, D.C.: Government Print-
ing Office, 1946); Atomic Energy Hearings S. Res. 179.
Nov 45-Feb 46; Statements iDy Voshio Nishina (In-
stitute of Physical and Chemical Research, Tokyo,
Japan), 12 Aug 48 and 4 Mav 50. in Ms. Historical
Division, Militarv Intelligence Section, General
Headquarters, Far East Command, "Statement of
Thus, when General Groves heard
from General Marshall on 10 August
that the Japanese had started surren-
der negotiations, he took steps to or-
ganize Manhattan Project teams to
carry out atomic investigations in Hiro-
shima and Nagasaki, as well as else-
where in the home islands. On the
eleventh, the Manhattan commander
directed District Engineer Nichols to
select qualified project personnel and
procure the special equipment the
teams would need to perform their
mission. He also sent instructions to
General Farrell that he was to be in
command of the Manhattan survey
teams going into Japan. Farrell began
to assemble medical, scientific, and
intelligence personnel already on
Tinian to participate in the investiga-
tions. On the twelfth, three days
before General MacArthur's appoint-
ment as Supreme Commander for the
Allied Powers (SCAP), Japan, General
Marshall informed him of the purpose
of the survey groups, clearing the way
for their early entry into Japan.
Meanwhile, Colonel Nichols, with
assistance primarily from the medical
staff of the District, hurriedly brought
together fifteen officers and twelve
Japanese Officials on World War II," copy in CMH.
On medical aspects see Memo, sub: Toxic Effects of
the Atomic Bomb, 12 Aug 45, OCG Files, Gen Cor-
resp, MP Files, Fldr 5, Tab G, MDR; Radiology m
World War 11. pp. 831-919; Michihiko Hachiva, Hiro-
shima Diaiy: The Journal of a Japanese Physician, August
6-September 30. 1945. ed. and trans. Warner Wells
(Chapel Hill, N.C.: Universitv of North Carolina
Press, 1955); Office of Civil Defense, Office of the
Secretary of War (Japan), and 1 echnical Manage-
ment Office, U.S. Naval Radio, Analysis of Japanese
Xuclear Casualty Data, comps. L. Wayne Davis et al.
(Albuquerque, N.Mex.: Dikewood Corp., April
1966); I'nited States Strategic Bombing Surve\,
Medical Division, The Effects of Atomic Bombs on Health
and Medical Sennces in Hiroshima and Xagasaki (Wash-
ington, D.C.: Government Printing Office, 1947).
544
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
enlisted men from the Clinton Lab-
oratories, Metallurgical Laboratory,
Los Alamos, the Monsanto Chemical
Company, and the University of
Rochester. Comprised chiefly of med-
ical scientists and individuals trained
in taking radiation measurements, this
group rendezvoused on the twelfth at
Hamilton Field in California and de-
parted for Tinian on the following
day.
When the project's survey group
reached Tinian on the sixteenth, they
joined the group General Farrell had
organized, which included not only
Manhattan personnel but also several
AAF representatives and two inter-
preters. Groves had designated Major
Furman, who had participated in
Manhattan's scientific intelligence ac-
tivities in Europe, to lead a unit with
a similar mission of investigating the
progress of atomic research in Japan.
While the assembled survey person-
nel marked time in late August, Gen-
eral Farrell formed them into three
teams. The first team going to Japan
included Farrell himself. Brig. Gen.
James B. Newman, Jr., of the AAF,
who served as his deputy; medical
and intelligence officers; and officers
trained in metallurgy. In the other
two teams, he included chiefly medi-
cal officers. Col. Stafford L. Warren,
chief of the Manhattan District's Med-
ical Section, commanded the Nagasaki
group, while his deputy in the Medi-
cal Section, Lt. Col. Hymer L. Frie-
dell, led the Hiroshima team.
Negotiations with the Japanese to
arrange for an early entry into Hiro-
shima and Nagasaki culminated in
formation of a special party, com-
prised mostly of medical personnel
from the International Red Cross, the
Army Medical Corps, MacArthur's
staff, and the Manhattan Project. The
Manhattan contingent consisted of
Farrell, Newman, Warren (whom Far-
rell had relieved temporarily of his as-
signment as chief of the Nagasaki
team so that he could serve as his
medical consultant), and a medical
and an intelligence officer. The spe-
cial party, accompanied by two
representatives of the Japanese
government, flew into Hiroshima on
8 September. Using Geiger counters
and other instruments, members of
the party checked through the de-
stroyed area of the city, determining
that no significant amounts of radio-
activity persisted. A Signal Corps
photographer with the party took
some of the first official pictures of
the damage wrought by the bomb.
Completing the preliminary survey in
a few days, the special party (except
for Farrell and Newman who had left
earlier for a hurried visit to Nagasaki)
returned to Tokyo.
Meanwhile, Colonel Warren's team
reached Nagasaki on 17 September
and began three weeks of intensive
investigation of damage and injuries
wrought by the bomb in that city. The
group concentrated on gathering data
concerning the nature of casualties. It
examined survivors in the nearby
Omura Naval Hospital and obtained
autopsy records of those who were
killed or died of injuries. A new detail
of officers from the Army Medical
Corps relieved Warren's team in early
October, and it departed from Naga-
saki on the sixth, arriving back in the
United States on the fifteenth.
A series of typhoons prevented
Colonel Friedell's team from reaching
Hiroshima until 26 September. It had
only about a week to carry out investi-
THE ATOMIC BOMBING OF JAPAN
545
gations designed to supplement the
preliminary data collected by Farrell's
party. Departing Hiroshima on 3 Oc-
tober, Friedell's team joined the Na-
gasaki group for the return trip to the
United States.
Other investigative groups, some of
them sponsored by the Army, also
conducted surveys of the effects of
the atomic bombing of Japan in late
1945 and 1946. SCAP headquarters
had established a Joint Commission
for the Investigation of the Atomic
Bombing of Japan during the period
when the Manhattan Project survey
was in progress. Commission teams
comprised chiefly of Army medical
personnel and Japanese scientists
worked closely with the Manhattan
teams, which were viewed as part of
the commission's survey organization.
The commission's personnel contin-
ued to work in Hiroshima and Naga-
saki after the departure of the Man-
hattan teams, extending studies
begun by the bomb project groups.
The Manhattan teams also cooper-
ated with the group sent to Japan by
the United States Strategic Bombing
Survey (USSBS), an organization es-
tablished by the War Department in
1944. The USSBS had received a re-
quest from the President in August
1945 to conduct a study of the effects
of all types of air attack in the war
against Japan, including the employ-
ment of atomic bombs. In addition,
the Secretary of War retained Maj. Al-
exander de Seversky, a well-known
aviator and aeronautics engineer, to
serve as his special consultant on the
results of employing air power in the
Pacific Theater, including the atomic
bombing of Hiroshima and Nagasaki.
The Navy had its own special investi-
gative unit, the Naval Technical Mis-
sion to Japan, which collaborated with
Manhattan teams. The British Mission
arrived too late to work with the Man-
hattan groups, but cooperated with
the USSBS in surveys of Hiroshima
and Nagasaki in November 1945.
All of the survey groups eventually
published reports of their observa-
tions and conclusions concerning the
effects of the atomic bombing of Hir-
oshima and Nagasaki. The Manhattan
District released its report on 30 June
1946, summarizing the physical
damage, medical findings, and other
pertinent observations made by its
survey teams.
Both cities had suffered extensive
physical damage to structures and
other inanimate objects as a result of
the tremendous blast and conflagra-
tion, the latter caused by heat from
the atomic explosion, collapse of
buildings, overturned stoves, shorting
out of electrical systems, and spread
of fire. Within a radius of 1 mile of
the epicenter of the explosion, de-
struction in both cities was virtually
complete, except for the frames of a
few reinforced concrete buildings. Be-
cause of differences in topography
and layout of the cities, more than 5
square miles of Hiroshima were total-
ly devastated, while only 3 square
miles of Nagasaki were similarly de-
stroyed. In the relatively flat terrain
of Hiroshima there was heavy damage
to almost everything up to 2 miles
from the blast center, destruction of
50 percent or more up to 3 miles,
and comparatively light damage for
several miles beyond, with broken
glass as far away as 12 miles. In the
rougher terrain of Nagasaki, severe
damage extended for about 3 miles
north and south in the valley where
546
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
.^-tv.
Physical Damage at Hiroshima
the bomb had been dropped and gen-
erally shorter distances up the hill-
sides to the east and west, but with
partial damage or fire as far as 4
miles out from the blast center at cer-
tain points.
The various survey groups were
able to obtain a reasonably accurate
assessment of the actual physical
damage, but they all experienced
greater difficulty in securing a clear
picture of the effect on the inhabit-
ants of the two cities. The Manhattan
teams, for example, were handi-
capped by the length of time that had
elapsed before they were able to
enter the cities. They also found that
Japanese public officials lacked pre-
cise statistical data on the actual pop-
ulation of the two stricken communi-
ties at the time of the bombings and
on the subsequent movement of
people in and out of the cities. The
extensive destruction of such record-
keeping civil organizations as hospi-
tals, fire and police departments, and
other government agencies further
complicated the collection of accurate
statistics.
Thus, the Manhattan teams had to
derive most of their medical data
from examining the injured; analysis
of death records, including autopsy
reports; and tabulation of such data
as the Japanese had compiled. The
District released its survey results in
June 1946, including the estimate of
casualties that differed somewhat
from those released by other groups
{Table 3).
THE ATOMIC BOMBING OF JAPAN 547
Table 3 — Comparative Estimates of Atomic Bombing Casualties in World War II
Popu-
lation
1945
MED June 1946
USSBS March 1947
OSW (Japan)
City
Dead
Injured
Dead
Injured
and L'SNR
April 1966
Dead
Injured
255,000
195,000
66,000
39,000
69,000
25,000
80,000
45,000
80,000-100,000
50,000-60,000
70,000
36,000
70,000
40 000
Nagasaki
Total
450,000
105,000
94,000
125,000
130,000-160,000
106,000
1 10 000
Sources: Ms, MED, "The Atomic Bombings of Hiroshima and Nagasaki," June 1946, LC; USSBS, The
Effects of Atomic Bombs on Health and Medical Seivices in Hiroshima and Nagasaki; OSW (Japan) and USNR,
Analysu of Japanese Nuclear Casualty Data. See also MDH, Bk. 1, Vol. 4, pp 6.12-6.15, DASA.
Manhattan's survey data did not
mention that American prisoners of
war held in a camp in Hiroshima were
among the atomic bombing casuakies.
The Commander in Chief, U.S. Army
Forces, Pacific, had received informa-
tion that about twenty American
airmen from the crews of airplanes
shot down over Japan were killed in
the bombing of Hiroshima. Subse-
quent information provided by Japa-
nese officials appeared to confirm the
presence of the airmen in Hiroshima
on 6 August 1945.^^
A primary objective of the Manhat-
tan survey teams was to ascertain the
particular kinds of injuries suffered,
with special attention to the effects of
radioactivity. By far the largest
number of casualties resulted from
burns traceable to the heat of the ex-
plosion and the fires generated by it
and secondary causes. Other major
sources of injury were falling debris,
pressure of the blast, and radiation.
5=* See CINCAFPAC Msgs, 23 Sep and 18 Oct 45,
HRC Files, 471.6 (Bombs, Atomic), CMH; Telecons,
Ruth Markwood (Gen Ref Br, CMH) to Maj G.
Chase (OCINFO, DA), sub: Names of Americans
Killed by Hiroshima Atomic Bombing, 17 and 26
Apr 72, HRC Files, 384.5 (Aerial Attacks and Raids-
Atomic Bomb), CMH; Washington Post, 11-12 Jul 70.
Most radiation injuries occurred from
exposure of the victims to gamma
rays at the time of the explosion.
There was little evidence of casualties
from alpha and beta rays and from re-
sidual radioactivity in the bombed-out
areas.
While giving less attention to the
psychological impact, the teams nev-
ertheless ranked terror with physical
damage and human death and injury
as the three most important effects of
the new weapon. They particularly
noted the immediate panic caused by
the explosions, followed by a tempo-
rary mass exodus from the cities.
Residents who had generally ignored
the appearance of only one or two
enemy aircraft moved promptly into
air raid shelters at the slightest indica-
tion of enemy air activity overhead.
The USSBS, unlike the Manhattan
survey, devoted considerable effort to
trying to determine the effects of the
bombs on the attitude of the Japanese
people toward the war and the deci-
sion of the Japanese government to
surrender. It reaffirmed the substan-
tial adverse impact the bombs had on
the morale of the local inhabitants of
548
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Atomic Bombing Casualties at
Nagasaki
Hiroshima and Nagasaki. But the
USSBS found that, in the relatively
brief period between the dropping of
the bombs and the start of surrender
negotiations, people elsewhere in
Japan had "neither time nor under-
standing of the revolutionary threat
of the atomic bomb ... to see in
[them] a final blow to Japan's pros-
pects for victory or negotiated
peace." ^4 The USSBS concluded also
that, while the bombs had some
impact on the leaders of the Japanese
government, their knowledge of the
awesome character of the new
weapon seems not to have played a
significant part in convincing them of
the need to surrender.
The USSBS and virtually all the
other survey groups that inspected
the results of the attacks on Hiroshi-
ma and Nagasaki agreed with the
Manhattan teams' assessment that the
atomic bomb was indeed a revolution-
ary new device capable of inflicting
damage and casualties on a scale far
beyond any existing weapon available
for use in modern warfare. The one
dissent to this view among the survey
groups came from Major de Seversky,
who had made a hurried one-man in-
spection of Hiroshima and Nagasaki
in the fall of 1945. He contended that
the other survey groups had greatly
exaggerated the effects of the bombs
and misinterpreted the character of
the destruction they had wrought. He
asserted that about 200 B-29's loaded
with incendiaries could have accom-
plished an equivalent amount of
damage. Furthermore, he argued,
atomic bombs dropped on modern
cities, such as New York or Chicago,
would do no more damage than a 10-
ton blockbuster. The wide circulation
of de Seversky's conclusions in news-
papers and the publication of his arti-
cle, "Atomic Bomb Hysteria," in the
February 1946 issue of Reader's Digest
created a public controversy. As a
result, the Senate Special Committee
on Atomic Energy, at work on prepar-
ing legislation for the peacetime con-
trol of the new energy source, invited
de Seversky and representatives of
the Manhattan Project, the USSBS,
and other appropriate organizations
to present their views at its 15 Febru-
ary session. ^^
^* USSBS, The Effects of Atomic Bombs on Hiroshima
and Xagasak), p. 22.
^^ Atomic Energy Hearings on S. Res. 179. pp. 453-
551. The Senate in late October 1945 had estab-
lished a Special Committee on Atomic Energy to
deal with "problems relating to the development,
use, and control of atomic energy" (ibid., p. 1). De
Seversky reported to the Secretary of War on the
Continued
THE ATOMIC BOMBING OF JAPAN
549
Survivors of the Nagasaki Bombing returning to the devastated city
Representing the Manhattan Project
at the hearing were General Farrell
and Colonel Warren. Farrell concen-
trated on refuting de Seversky's
downgrading of the psychological and
physical effects of the bombing of
Japan. De Seversky, he said, underes-
timated the psvchological damage cre-
ated by the instantaneousness of an
atomic explosion and the lack of any
effective defense against it. He chal-
lenged the accuracy of de Seversky's
data on the comparative damage pos-
sible with conventional air weapons
and stated that the evidence collected
by the Manhattan survey teams indi-
cated that at least 703 B-29's would
nsiilis ol his stiiflv ot ail power in the Pacific rhca-
ter 111 a letter daUfI 1 1 February 1946. Fhat part of
the letter which relates to the atomic bombing of
Japan is reprodiu eel m ibid., pp. 49;i-,'i()l.
be required to do the physical
damage caused by the atomic bomb at
Hiroshima. While expressing concern
with the popular tendency to overesti-
mate the power of the bombs, Farrell
asserted that "if two bombs will do
what was done to Hiroshima and Na-
gasaki, put two cities out of commis-
sion and stop a war, I think it is [sic] a
fairly effective weapon." ^^
Colonel Warren generally supple-
mented General Farrell's testimony
on the extensive physical damage,
caused by fire and the blast effect, in
Hiroshima and Nagasaki. He empha-
sized especially the difficulty of arriv-
ing at any accurate conclusions on
what had actually happened on the
^^ 1 estimonv ol Farrell in ibid., p. 505.
550
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
basis of observations made and infor-
mation gathered in the period of a
few days of hurried inspection, such
as that carried out by Major de Se-
versky. He cited, for example, the im-
possibiHty of arriving at an accurate
estimate of casualties without a great
deal more investigation and analysis,
as the Japanese themselves were not
able to furnish reliable statistics. Be-
cause of confusion, shock, and panic,
Japanese medical officials had not
kept adequate records of mortalities
and injuries caused by the bombs.
Colonel Warren reinforced General
Farrell's conclusion "that a tremen-
dous amount of destruction oc-
curred" and the atomic bomb had ac-
complished "the job it was intended
to do." ^"^
For the most part representatives of
the USSBS and other experts sup-
ported the views expressed by Farrell
and Warren. In the face of almost
unanimous disagreement, de Seversky
persisted in his contention that a Hiro-
shima-type atomic bomb was not any
more effective against the stone, con-
crete, and brick structures in Western
cities than a well-placed 1 0-ton block-
buster. He did concede, however, that
a final understanding of the potential-
^■^ Testimony of Warren in ibid., p. 513.
ities of atomic bombs as weapons of
war would be possible only after a
much more thorough and careful in-
vestigation and analysis of their ef-
fects on Hiroshima and Nagasaki.
Personnel of the Manhattan Project
had participated in almost every
aspect of the planning and prepara-
tions for employment of atomic
bombs against Japan: in the decision
to use the bombs against Japanese
cities; in the choice of targets; in the
development of an overseas base;
and, finally, in the assessment of the
damage wrought. The destruction of
Hiroshima and Nagasaki marked their
efforts with complete technical suc-
cess and contributed significantly to
ending World War II. Yet the respite
that the project's success had afford-
ed was momentary, for looming on
the horizon was another threat to the
security of the nations of the world —
how to control this revolutionary new
force in a peacetime environment. In
face of this profound problem, the
Manhattan Project would continue to
operate in the emerging postwar
period and its personnel would
assume a role in guiding the domestic
and international efforts to ensure
that atomic energy would best serve
the needs of mankind.
PART FIVE
COMPLETING THE ATOMIC MISSION
CHAPTER XXVII
The Atomic Age and Its Problems
Employment of an atomic bomb
against Japan demonstrated to the
world that atomic energy was no
longer an experimental hypothesis,
but a material reality. A creation of
the new atomic age, this awesome
weapon of mass destruction heralded
the onset of a multitude of fundamen-
tal political, social, and economic
problems for national leaders in the
emerging postwar era. As Secretary
Stimson cautioned in his memoran-
dum to the press shortly after the
bombings of Hiroshima and Nagasaki,
"great events have happened. The
world is changed and it is time for
sober thought." ^
Anticipating the likely ramifications
of the atomic bombing mission, the
leaders of the Manhattan Project in
the summer of 1945 concentrated
their efforts on two problem areas
deemed as priority matters: releasing
just enough information on the
atomic project to inform the general
public without violating essential mili-
tary security, and participating more
actively in developing the means of
peacetime control of the new source
of energy both at home and abroad.
"The result of the bomb is so ter-
rific," the Secretary warned in his pro-
nouncement, "that the responsibility
of its possession and its use must
weigh heavily on our minds and on
our hearts." ^ Even those at Trinity
who had witnessed the birth of the
new age had felt within moments of
the first atomic explosion "their pro-
found responsibility to help in guid-
ing into right channels the tremen-
dous forces which had been unlocked
for the first time in history".^
The Atomic Story: Informing the Public
The bombing of Japan, in an in-
stant, catapulted the Manhattan
Project's closely guarded secret — de-
velopment of an atomic weapon for
military use — into the public lime-
light. This event precipitated a seem-
ingly endless barrage of requests for
information, but project leaders were
prepared with official statements on
selected aspects of the atomic story.
"In accord with its policy of keeping
the people of the nation as complete-
ly informed as is consistent with na-
tional security, the War Department
wishes to make known at this time, at
1 MDH. Bk. 1, Vol. 4, "Auxiliary Activities," Ch.
8, Press Release No. 29, Comment by Secy War on
Llse of Atomic Bomb, 9 Aug 45, DASA.
2 Ibid.
^ Ibid., Press Release No. 4, First Test Conducted
in New Mexico, 6 Aug 45, DASA.
554
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
least in broad dimension, the story
behind this tremendous weapon. . . .
Other statements will be released
which will give further details con-
cerning the scientific and production
aspects of the project and will give
proper recognition to the scientists,
technicians, and the men of industry
and labor who have made this
weapon possible." '^
The official statements released to
the public following the bombings of
Hiroshima and Nagasaki were the
result of a carefully designed public
relations program, begun in early
1944. At this time, Manhattan's mili-
tary and scientific leaders had per-
ceived that, from the standpoint of se-
curity, the release of some selected
information would make it easier to
maintain the secrecy of the highly
classified, patented aspects of the
project. With the objective of preserv-
ing essential military security while
also adequately informing the Ameri-
can people, the public relations pro-
gram was planned along two broad
lines: preparation of a series of public
releases, and preparation of an ad-
ministrative and scientific history of
the project.
Press Releases
Responsibility for preparation of
the press releases — to include public
statements for the President, the Sec-
retary of War, and other government
leaders — in large measure, fell initial-
ly upon General Groves and his
Washington staff. The need for pro-
fessional guidance was apparent.
Groves contemplated borrowing Jack
Lockhart, liaison official for atomic
energy matters in the Office of Cen-
sorship, but pressing job commit-
ments made him unavailable for the
assignment. Lockhart, however, sug-
gested that Groves approach William
Laurence, the well-known science re-
porter of the New York Times. Re-
sponding to the Manhattan command-
er's request, the managing editor of
the Times readily agreed to release
Laurence for as long as he was
needed by the atomic project.^
During the early months of 1945,
Groves cleared the way for Laurence
to visit the principal atomic installa-
tions and to interview the major par-
ticipants. He also arranged for Lau-
rence to observe the final significant
events in the development of atomic
weapons, including the Trinity test
and the bombing of Japan. With as-
sistance from public relations person-
nel at each site, Laurence wrote most
of the press releases on various
project activities and events and then
circulated them to the appropriate
project officials for review.^
Because official releases from high-
ranking members of government
would constitute important pro-
nouncements on future atomic energy
policy, final responsibility for these
statements was assigned to the Inter-
im Committee. The committee agreed
that Laurence should draft the state-
ments and submit them to Arthur
Page, a long-time friend and aide of
the Secretary of War, for review.
Page, in turn, would submit the drafts
* Ibid., Press Release No. 2, Statement by Secy
War, 6 Aug 45, DASA.
5 Groves, Now It Can Be Told. pp. 325-26; MPC
Min, 24 Feb 45, OCG Files, Gen Corresp, MP Files,
Fldr 23, Tab A, MDR.
® For examples of the press releases prepared by
Laurence see MDH, Bk. 1, Vol. 4, Ch. 8, DASA.
THE A roMic ac;k and us problems
555
to the committee. As work pro-
gressed, the committee asked 1st Lt.
R. Gordon Arneson, an officer on
Stimson's staff serving as the commit-
tee's secretary, to assist Laurence and
Page. The three worked first on the
Trinity test press releases and then
on those to be issued by the President
and the Secretary of War following
the bombing of Japan. At its meeting
on 21 June, the committee suggested
a number of changes to the prelimi-
nary drafts and formed a subcommit-
tee, consisting of Page and a repre-
sentative from General Groves 's
office, to redraft the statements.^
After the June meeting, the burden
of shaping the press releases into
final form fell largely to the personal
staffs of Stimson and Groves. The
Secretary's staff took responsibility
for coordination with the British and
for securing approval of the state-
ments by Stimson and the President.
The Potsdam Conference and the
defeat of Churchill in the British par-
liamentary elections at the end of July
complicated the coordinating process,
but did not result in any radical
changes in the statements as earlier
approved by the committee. Groves's
staff prepared such additional releases
as would be needed following that of
the Secretary of War. ^
^ See Ch. 26 on the establishment and member-
ship of the Interim Committee. Interim Committee
Log, 9. 14, 19 May and 15. 18, 20-21 Jun 45, HB
Files, Fldr 98, MDR; Notes on Interim C>ommittee
Mtgs, 14 Mav and 1 and 21 Jun 45, HB Files, Fldr
100, MDR. See also Notes on Interim Committee
Mtg. 18 Mav 45, ()(^G Files, Gen Corresp, Groves
Files, Fldr 3, Tab (), MDR.
^Interim Ck)mmittee Log, 21, 26 Jun and 1, 5-7,
10-11, 19, 28 Jul 45, MDR: Notes on Interim Com-
mittee Mig, 6 Jul 45, MDR; Memo, Conanl and
Bush to Harrison, 25 Jun 45, HB Files, Fldr 79,
MDR; Memo, .Arneson to Harrison, 25 Jun 45, HB
Files, Fldr 100. MDR; Memo, (Rogers Makins (Brit-
As the time neared for releasing in-
formation to the public. Groves reor-
ganized the Manhattan Project's
public relations program to ensure
close coordination between the public
relations officers at each installation
and the District's Intelligence and Se-
curity Division and to retain within
his office strong control over all re-
leases. He assigned Lt. Col. William
A. Consodine, a lawyer and experi-
enced newspaper writer who was serv-
ing as a security officer on his staff, to
take charge of public relations in his
Washington headquarters and also
designated those officers who were to
oversee public relations activities at
each of the major installations.
Groves emphasized the necessity for
direct liaison at all times and speci-
fied, in some detail, the precise limi-
tations on publication of information,
particularly on that relating to scien-
tific matters. As a guide for the public
relations officers, the Manhattan com-
mander provided the district engineer
with a specific list of those subjects
that were to be omitted from all
releases and outlined the mechanics
for clearing material for publication,
photographs, motion pictures, and
radio. ^
When authorized, the release of
prepared statements was carefully
controlled and adroitly managed.
Within sixteen hours of the Hiro-
ish embassv staff member in Wash., D.C^.) to Harri-
son], 16 Jul 45, OCG Files, Gen Corresp, MP Files,
Fldr 12, Fab S, MDR. I he exchange of messages
(30 Jul-6 Aug 45) between the President and the
Secretary of War concerning last-minute changes in
the President's statement arc in HB Files, Fldr 64,
MDR.
^ Ltr, Groves to Dist Engr, sub: MED Pub Rels
Prgm, 26 Jul 45, Admin Files, Gen Corresp, 000.71
(Releasing Info), MDR.
556
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
shima bombing, the President an-
nounced to the American pubHc: "It
is an atomic bomb. It is a harnessing
of the basic power of the universe.
The force from which the sun draws
it[s] power has been loosed against
those who brought war to the Far
East." After giving the people a brief
glimmer into the atomic story, he
continued that "science and industry
worked under the direction of the
United States Army ... [to effect]
the greatest achievement of organized
science in history [and that] the Sec-
retary of War, who has kept in per-
sonal touch with all phases of the
project, will immediately make a
public statement giving further de-
tails." ^° The release of Stimson's
statement came shortly after the
President's. In it he provided selected
fact: on Manhattan's atomic activities
and promised that "every effort is
being bent toward assuring that this
weapon and the new field of science
that Stands behind it will be employed
wisely in the interests of the security
of peace-loving nations and the well-
being of the world." ^^
In the press releases that followed
in the days before and after the
bombing of Nagasaki, the American
people learned the truth about the
"explosion" at Trinity and significant
aspects about harnessing atomic
energy and its future applications.
They also received selected back-
ground information on Manhattan's
atomic processes, production plants,
communities, and significant person-
alities, both military and civilian.
From a public relations standpoint.
>OMDH, Bk. 1, Vol. 4, Ch. 8, Press Release No
1, Statement bv President of the United States
DASA.
•> Ibid., Press Release No. 2, DASA.
War Department and Manhattan
Project officials could view their well-
planned and well-orchestrated pro-
gram of public releases as a substan-
tial success. While unfolding the
drama of the atomic story in surpris-
ingly detailed episodes, the program
managed to adhere to its central ob-
jective, the preservation of essential
military security.
The Smyth Report
In the course of the development of
the atomic bomb, a number of the
scientific leaders of the project — nota-
bly James B. Conant, Vannevar Bush,
Arthur Compton, and Henry D.
Smyth — foresaw the need to release
to the public, as soon as an atomic
weapon was used, a report of some
type that recounted the technical
accomplishments of the wartime
project. General Groves went along
with this proposal, perceiving that the
release of carefully selected informa-
tion would make maintaining the se-
crecy of the rest easier. Consequently,
in early April 1944, Groves conferred
with Conant and Smyth concerning
the preparation of a report for ulti-
mate public release.
A short time later, after further
consideration of the proposed idea.
Groves requested Smyth to undertake
the task of preparing the report. Both
Groves and Conant viewed the
Princeton University physicist as an
excellent choice. He had been associ-
ated with the project in various capac-
ities since 1941, starting as a member
of the Uranium Section of the Nation-
al Defense Research Committee
(NDRC) and its successor organiza-
tions, then serving as a division head
THE ATOMIC AGE AND ITS PROBLEMS
557
General Groves {center left) Holding a Press Conference at District headquarters
and associate director of the Metallur-
gical Laboratory, and was currently
acting as a consultant to the Universi-
ty of Chicago program. On 21 April,
Smyth informed Groves that he would
be happy to accept the responsibility
for the assignment, and in May the
Military Policy Committee approved
both preparation of the report and
the selection of Smyth as its author. ^^
From the outset. General Groves
made a special effort to facilitate
Smyth's work. Manhattan provided
him secretarial service and guards for
^^ Ltrs, Bush to Conant, 9 May 44, and Conant to
Bush, 15 May 44, OSRD; Groves Diary, 10 Apr 44,
LRG; Ltrs, Groves to Smyth, 17 Apr 44, and Smyth
to Groves, 21 Apr 44, Admin Files, Gen Corresp,
319.1 (Smyth), MDR; MFC Min, 10 May 44, MDR;
Hewlett and Anderson, \'eu< World, p. 368; Groves,
Sow It Can Be Told. p. 348. Except as otherwise indi-
cated, section that follows on Smvth Report based on
MDH, Bk. 1, Vol. 4, Ch. 13, DASA.
his Princeton office, and Groves
cleared security barriers so Smyth
could visit the various project sites,
confer with key personnel, and exam-
ine pertinent documents. In a letter
to all heads of the major Manhattan
installations. Groves wrote: "The pur-
pose is to give clearly and promptly
recognition to those who have worked
so long and necessarily so anony-
mously. . . . To accomplish his pur-
pose. Dr. Smyth must have rather
complete information concerning
your phase of the project including
access to necessary documents . . .
[and] information and advice from
you and your principal assistants." ^^
"Ltr, Jean O'Leary (for Groves) to Dist Kngr,
sub: Info for H. D. Smyth, 13 May 44, Admin Files,
Gen Corresp, 319.1 (Smyth), MDR. Similar letters
to Oppenheimer, Lawrence, Urey and Matthias may
be found in the same file.
558
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
As Professor Smyth progressed
with his work, Groves, in effect,
became the coordinator of the
project. Whenever Smyth needed as-
sistance, he apphed for it directly to
the Manhattan commander. For ex-
ample. Groves in the fall of 1944 ap-
proved his request to employ a fellow
Princeton physicist, Lincoln G. Smith,
as a research assistant. And, in De-
cember, he again aided Smyth in ob-
taining information about the thermal
diffusion program, emphasizing that
"it is particularly important . . . that
proper credits be given to the Navy
and to Abelson and Gunn." ^'*
Starting as early as August 1944,
Smyth began submitting draft sec-
tions to Groves and completed eleven
of thirteen projected chapters by Jan-
uary 1945. In late February, he deliv-
ered the manuscript to Groves, lack-
ing only a concluding chapter that
would "not be a very serious under-
taking." In March, Conant and
Groves undertook a preliminary
review of the manuscript. After a
close scrutiny, they determined that
Smyth's treatment was too technical,
did not mention enough names of
participants, included too many of the
author's own critical comments on
events, and provided too much infor-
mation about the work at Los
Alamos. ^^
"On the assignment of Smith, who finally joined
the project in the spring of 1945, see Ltrs, Smyth to
Groves, 31 Aug 44, and Groves to Smyth, 9 Apr 45.
On the Navy and thermal diffusion see Ltrs, Smyth
to Groves, 31 Nov 44, and Groves to Smyth, 1 1 Dec
44 (source of quotation). All letters in Admin Files,
Gen Corresp, 319.1 (Smvth), MDR. Groves Diarv, 6
Apr 45. LRG.
'*Ltrs, Stnyth to Groves, 5 Aug 44 and 13 Jan
(source of quotation), 23 Feb, 23 Mar 45, Admin
Files, Gen Corresp, 319.1 (Smvth), MDR; Groves
Diaiv, 31 Mar 45, LRG.
As the time grew near when the
report had to be ready for release.
Groves arranged for an elaborate and
thorough review. He gave the heads
of the major project installations and
the leading contractor firms an op-
portunity to comment on the parts of
the report that pertained to their ac-
tivities. After Smyth incorporated
whatever revisions these comments
made necessary. Groves turned over
the entire manuscript to his trusted
scientific adviser, Richard Tolman, for
a final review and editing. Two scien-
tists in Tolman's NDRC office — Paul
C. Fine, a physicist from the Universi-
ty of Texas, and William S. Shurcliff,
Tolman's technical assistant — aided in
the final editing. ^^
To guide the reviewers on the key
issue of security. Groves had Smyth
and Tolman draw up a set of "rules.
There was a general exclusion of ev-
erything concerning actual construc-
tion of an atomic bomb. Other infor-
mation could be included if it satis-
fied at least one of the requirements
in each of the three categories set
forth by Smyth and Tolman:
I. (A) That it is important to a reasona-
ble understanding of what had been done
on the project as a whole or (B) That it is
of true scientific interest and likely to be
truly helpful to scientific workers in this
country and
'^Oppenheimer's letter to Smyth, 14 Apr 45, pro-
vides a good example of the review comments by
project leaders. The letters exchanged between
Groves and Roger Williams of Du Pont on 12 Apr
and 3 May 45 are representative of those received
from industrial firms involved in the atomic project.
On the provisions for the final review and editing of
the manuscript see Ltr, Smyth to Groves 22 May 45.
These letters are filed in Admin Files, Gen Corresp,
319.1 (Smvth), MDR. See also Groves Diarv, 18 Jun
45, LRG.
THE ATOMIC AGE AND ITS PROBLEMS
559
Henry D. Sm\th (right) conferring ivith Richard Tolman
II. (A) That it is already known gener-
ally by competent scientists or (B) That it
can be deduced or guessed by competent
scientists from what is already known,
combined with the knowledge that the
project was in the overall successful or
III. (A) That it has no real bearing on
the production of atomic bombs or (B)
That it could be discovered by a small
group (15 of whom not over 5 would be
senior men) of competent scientists work-
ing in a well-equipped college lab in a
year's time or less.
The Smyth-Tolman security rules
resulted in many more changes in the
draft manuscript. Nevertheless,
Tolman and his editorial staff had
completed their work by early July.
Finallv, to make certain that Smvth
'^ The quoted material is from Ltr, Groves to
Smyth, 21 May 45, OCG Files, Gen Corresp, MP
Files, Flder 12. Tab N, MDR. See also Groves, \ou'
II Can Be Told, p. 349.
had given recognition in the report to
all project personnel deserving it
(Groves was convinced that this was
the best means for avoiding future se-
curity violations), the Manhattan com-
mander arranged for couriers to de-
liver selected chapters to appropriate
project scientific personnel for a hur-
ried final review. Given only a few
hours, in most instances, to complete
this review, the majority of the scien-
tists simply signed a statement indi-
cating that they approved the portion
of the report they had received with-
out making detailed suggestions. One
exception was Colonel Nichols, who
predicted the report would arouse
"controversy concerning the fairness
of credit given to different individ-
uals. . . ." He also found that it gave
too much attention to the work of the
560
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Metallurgical Laboratory and to those
activities in which Professor Smyth
was a participant, and not enough to
the commercial firms and to Los
Alamos. For these reasons, the dis-
trict engineer recommended that "if
the report is issued in its present
form, full credit be given to H. D.
Smyth for preparing it and that the
statement be made that the Army has
no responsibility for the report except
for asking him to do it." In the report
as ultimately published Nichols's first
recommendation was accepted; the
second was not.^^
Once again Tolman and Smyth re-
viewed the report to make certain that
every section conformed to the estab-
lished security rules, while Groves as-
sembled a corps of stenographers,
some of whom had to be flown from
Oak Ridge, to do the final typing. By
the end of July, the manuscript was
ready to go to the printers. But a final
hurdle remained: obtaining the ap-
proval of the Secretary of War — and
probably the President — and, because
of interchange, at least tacit approval
from the British. ^^
Stimson had come back from the
Potsdam meeting on 28 July. In the
days following his return, the Secreta-
ry gave immediate attention to a
number of urgent issues on his accu-
mulated agenda. Initially, he devoted
considerable time to consultations
*^ Ltr (source of quotations), Nichols to Groves,
sub: H. D. Smyth Ms, 25 Jul 45; Memo, Fine to
Consodine, sub: Msg tor H. D, Smyth, 1 1 Jul 45;
Memo, C-onsodine (for Groves) to (".ompton, Urev
et al., sub: Insirs on Review of Smyth Ms, 13 Jul 45;
Ltr, I'rev to Groves, 14 Jul 45; Msg, Oppenheimer
to Groves, 31 Jul 45 All in Admin Files, Gen Gor-
resp, 319.1 (Smvth), MDR. For Grovess views see
Now It Can Be Told. p. 349. Groves Diarv, Jul 45,
I.RG, contains entries that serve as a guide to the
final review process of Smvth's manuscript.
'9 Groves, Noir ll Cnu H, I old. pp. 349-50.
with his two assistants, Harvey Bundy
and George Harrison, as well as other
staff members, and General Groves
on the subject of ongoing prepara-
tions of the public statements to be
made by the President and himself
after the first bomb drop. Then on
the morning of 2 August, he turned
to the question of publication of
Smyth's manuscript. Present at the
meeting in his office were Harrison
and Bundy; his military aide. Col.
William H. Kyle; Groves, Conant, and
Tolman as project representatives; Sir
James Chadwick, leader of the contin-
gent of British scientists assigned to
the project; and Roger Makins, the
member of the British embassy staff
in Washington assigned responsibility
for atomic energy matters.
For almost two hours, the conferees
discussed the advantages and disad-
vantages of releasing what Stimson
called "the proposed statement to be
made by the scientists. . . ." Conant
and Groves argued strongly for publi-
cation and release as the best means
for protecting the future security of
the American program. Groves, in
particular, saw an analogy between
the information in Smyth's manu-
script and "similar instruction given
people going west years ago when
they were told that they should go to
a water hole about 30 miles away and
that if it was dry they should go to
one about 10 miles beyond that." ^°
His point was that it provided facts
about the atomic project without re-
vealing any vital secrets.
Stimson, having just returned from
^° First quotation from Stimson Diarv, 2 .Aug 45,
HLS. Second quotation from notes on Smvth Ms
Mig in Secv War Office, 2 Aug 45, OGG Files, Gen
Goiresp, MP Files, Fldr 12, lab (), MDR.
THE ATOMIC AGE AND US PROBLEMS
561
disquieting face-to-face encounters
with Soviet representatives at Pots-
dam, expressed serious doubts about
releasing any information that would
be helpful to the Russians. Chadwick,
who had not yet read the manuscript,
also had reservations. He found diffi-
culty in understanding why the atomic
leaders in America saw the need to
publish such an extensive statement,
something he said that the British
would not do. Makins stated that Sir
John Anderson, the British Cabinet
officer in charge of atomic energy,
was convinced of the need for issuing
a report, but he feared its cumulative
impact. The meeting closed with
Stimson indicating "that he was prac-
tically prepared to accept" publica-
tion, relying upon the counsel of his
advisers, "because of my confidence
in the conservatism of General
Groves." Nevertheless, he concluded
that publication should not take place
until both the President and the Brit-
ish had approved of it.^^
The following day Stimson dis-
patched a cable to the President, stat-
ing that on the unanimous advice of
his advisers he had decided to recom-
mend the release of the report for
reasons of future security. While
awaiting an opportunity to see the
President, Chadwick, who in the
meantime had read the report, sent
an acknowledgment that he could see
the necessity for its release. When the
Secretary finally saw Truman on 8
August, two days after the bombing
of Hiroshima, he advised him that he
should make the decision, as "he
would have to bear the brunt of the
disapproval of Congress for giving
away such a valuable secret." After
hearing the views of Bush, Conant,
Groves, Stimson, Harrison, and Ad-
miral William D. Leahy, his personal
chief of staff, at a White House meet-
ing on the ninth, Truman decided in
favor of immediate publication.^^
On 12 August, the War Department
released the first of a thousand copies
of the report entitled A General Account
of the Development of Methods of Using
Atomic Energy for Military Purposes Under
the Auspices of the United States Govern-
ment, 1940-1945, which Groves had
printed earlier by the Pentagon's clas-
sified reproduction facilities in antici-
pation of the President's approval.
Issued with each copy of the report
was an accompanying statement that
sought to place its publication in the
proper perspective:
Nothing in this report discloses neces-
sary military secrets as to the manufacture
or production of the weapon, h
does provide a summary of generally
known scientific facts and gives an ac-
count of the history of the work and of
the role played in the development by
different scientific and industrial organi-
zations.
The best interests of the United States
require the utmost cooperation by all
concerned in keeping secret now and for
all time in the future, all scientific and
^' Stimson I)iar\ (source of quotation). 2 Aug 45,
HLS; Notes on Snivth Ms Mtg in Secv War Office. 2
Aug 45. MDR; Groves Diarv, 27 Jul and 2 Aug 45.
I.R(i: I-trs, lolman to Groves, subs: Status of Sinvth
Hist, 2(> Jul 45, and Conversation This Morning
With Chadwick Re Svmth Hist, 27 |ul 45. Adniiii
Files, Gen Coiresp, 319.1 (Smvthl, MDR
'^Stimson Diarv (source of quotation), 9 Aug 45,
HLS; Msg, Secv War to President, 3 Aug 45, HB
Files, Fldr 64, MDR; Groves Diarv, 9 Aug 45, LRG;
Bush, Pieces of l/ie Action, pp. 294-95. On Chadwick's
views see I-tr, Chadwick to Field Marshal Henry
Maitland Wilson (head of British joint Staff Mission,
Wash., D.C.). 4 Aug 45. (KXi Files, Gen Coiresp,
MP Files, Fldr 12. Fab H, MDR.
562
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
technical information not given in this
report or other official releases of infor-
mation by the War Department. ^^
While the Smyth Report — as it came
to be popularly known — achieved its
basic purposes of informing the
American public without compromis-
ing vital project secrets, there were
inevitably objections and criticisms on
some points. Where appropriate, Pro-
fessor Smyth made corrections and
additions for incorporation in later
printings. But none of these correc-
tions and additions greatly altered the
original report, which, as Groves
noted in retrospect, was "on the
whole, . . . considering the rather
difficult conditions under which it was
prepared, . . . extraordinarily suc-
cessful in its efforts to distribute
credit fairly and accurately." ^^
Professor Smyth himself felt the
report achieved considerably more
than this limited objective. In his view
the development of the atomic bomb
had raised many questions on postwar
atomic energy policy "that must be
answered in the near future ... by
the people through their representa-
tives." In accomplishing this, Smyth
looked to the men of science, "who
can understand . . . and explain the
potentialities of atomic bombs to
their fellow citizens," to use his
report as the vehicle for helping the
public gain some insight into the new
atomic world. "The ultimate responsi-
bility for our nation's policy rests on
its citizens," Smyth wrote, "and they
can discharge such responsibilities
wisely only if they are informed." ^^
"WD, Bur of Pub Rels, Press Branch, Press Re-
lease, 12 Aug 45, Admin Files, Gen Corresp, 319.1
(Smyth), MDR. The release also made an addition
to the text of the Smyth Report at paragraph 12.18,
which was intended to allay public anxiety concern-
ing the dispersal of radioactivity by the bomb: "The
War Department now authorizes the further state-
ment that the bomb is detonated in combat, at such
a height above the ground, as to give the maximum
blast effect against structures, and to disseminate
the radioactive products as a cloud. On account of
the height of the explosion practically all the radio-
active products are carried upward in the ascending
column of hot air and dispersed harmlessly over a
wide area. Even in the New Mexico test, where the
height of explosion was necessarily low, only a very
small fraction of the radioactivity was deposited im-
mediately below the bomb." A copy of the release is
reproduced in Groves, Sow It Can Be Told, pp. 351-
52.
^^ Groves, Sow It Can be Told. p. 352. Typical ex-
amples of the reaction to the publication of the
Smyth Report may be found in Admin Files, Gen
Corresp, MDR. See 319.1 (Smyth) for Ltrs, August
C. Klein (Y-12 Proj Engr, Stone and Webster) to
Smyth, 30 Aug 45, and Smyth to Boris Pregel (Ca-
nadian Radium and Uranium Corp.), 14 Sep 45; and
095 (Metal Hydrides) for Ltrs, P. P. Alexander
(Metal Hydrides president) to Groves, 19 Sep 45,
Groves to T. Lindsley (Metal Hydrides), 5 Dec 45,
and Alexander to Irvin Stewart (OSRD Ex Secy), 12
Atomic Energy: Planning for
Postwar Control
Release of selected information was
only one aspect of the much larger
problem of planning for peacetime
legislation and international agree-
ments to control the use of atomic
energy in the postwar era. When
President Truman, in a message to
Congress on 3 October 1945, empha-
sized the importance of dealing with
this problem on "two fronts — the do-
mestic and international," he focused
attention upon a matter that had long
been a cause of considerable concern
Jan 46. In the privately published Princeton Univer-
sity edition (1945) of the report, Smyth added ap-
pendices giving the texts of the War Department's
release on the Trinity test of 16 Jul 45 and the
statements issued by the British Information Service
on 12 August and the Canadian Information Service
on 13 August.
^^ Smyth Report, pp. v and 165.
THE atomic: age and its problems
563
for atomic project leaders and their
scientific stalls. ^^
Wartime Background
As many of the scientists completed
the basic research work required to
achieve the wartime objectives of the
atomic program, they began to con-
sider the future possibilities in the ex-
citing new field of atomic energy. The
situation in the Metallurgical Project
was typical. In the latter part of 1943,
rumors spread of an impending re-
lease of numerous personnel. To
counter the disquieting effects of
these rumors on his scientific staff,
Arthur Compton included in his new
program for the coming fiscal year
basic research projects as well as con-
tinuing support for the Hanford and
Los Alamos operations.
For the most part. Groves and his
scientific advisers opposed having
Metallurgical Project scientists under-
take any new large-scale or long-
range research activities until the war
was over, but they could see the ne-
cessity for limited research projects
for those scientists serving in a
standby capacity for the plutonium
production facilities and the bomb
development program. This concept
of limited research generally did not
satisfy most Metallurgical Project sci-
entists. Accordingly, Compton en-
deavored to reduce their unrest by
giving them an opportunity to partici-
pate in postwar planning. In July
1944, he appointed a committee to
formulate "sound national postwar
policies . . . from the military, scien-
tific and industrial standpoint." This
committee issued in November a
"Prospectus on Nucleonics." It dis-
cussed in detail future research and
industrial applications of atomic
energy in the United States and the
need for a world organization to pre-
vent nuclear warfare. ^'^
By August, the Military Policy Com-
mittee had also approved appoint-
ment of a special committee, suggest-
ed by Bush and Conant, "to recom-
mend from a technical standpoint the
postwar policy for governmental re-
search and development in the atomic
energy field." Groves, who later
stated that a prime purpose of this
committee was to convince project
scientists that the Army was not for-
getting postwar problems, appointed
Tolman as chairman, with Warren K.
Lewis, Henry D. Smyth, and Rear
Adm. Earle W. Mills, assistant chief of
the Navy's Bureau of Ships, as mem-
bers. Capt. Thorvald A. Solberg of
the Navy also sat in on all meetings.
This Postwar Policy Committee, as
it came to be called, interviewed sci-
entists from all of the major Manhat-
tan Project research centers and re-
ceived a large number of written
memorandums. The committee,
-" Iiunian, Mn
:530.
^'^ "Prospectus on Nucleonics," prepared by Zay
Jeffries (committee chairman), Enrico Fermi, James
Franck. Thorfin R. Hogness, Robert S. Mulliken
(secretary), Robert S. Stone, and Charles A.
Thomas. The covering communication from which
the quotation in the above paragraph was taken is
I.tr, Jeffries, Fermi et al., to Compton, 18 Nov 44,
HB Files, Fldr 59, MDR. A copy is also on file in
Admin Files, Gen Corresp, 334 (Postwar Policy
Committee-CEW). Hewlett and Anderson, Xew
World, pp. 324-25. Fermi's wife states that Metallur-
gical Faboratorv phvsicist Eugene Rabinowitch also
had an important hand in drafting the report on nu-
cleonics, although he was not a member of the com-
mittee; see Eaura Fermi, Illustrious Imnugrnnis: The In-
tellectudl Migration From Europe. 1930-1941 (Chicago:
I'niversity of Chicago Press, 1968). p. 201. Ra-
binowitch later became the editor of the Bulletin of
the Atomic Scientists.
564
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
seeing the need for maintaining
United States military superiority, rec-
ommended continued production of
active materials and weapon develop-
ment and government support of fun-
damental research and industrial ap-
plications. To administer the pro-
gram, the committee proposed a na-
tional authority that, in the manner of
the Office of Scientific Research and
Development (OSRD), would make
funds available to government-operat-
ed military and civilian laboratories,
colleges and universities, and com-
mercial firms. ^®
Another individual gravely con-
cerned with postwar planning was
Niels Bohr, the eminent Danish physi-
cist who had escaped from his occu-
pied homeland in 1943. In conversa-
tion with Soviet officials at the Soviet
embassy in London in April 1944,
Bohr had learned that the Soviets had
heard rumors of the Manhattan
Project and were very much interest-
ed in the program. He concluded that
Russia would continue to push devel-
opment of atomic energy and, consid-
ering the quality of the prewar work
of Soviet physicists added to the
knowledge they might gain from a de-
feated Germany, he thought they
would succeed. Bohr advocated that
the United States and Great Britain
should adopt an open atomic policy
after the war, using the revolutionary
^^ MPC Min (source of quotation), 5 Aug 44,
OCG Files, Gen Corresp, MP Files, Fldr 23, Tab A,
MDR; Ltr, Groves to Tolman, 29 Aug 44, and
Memo, Tolman to Lawrence, sub: Committee on
Postwar Recommendations, 16 Sep 44, Admin Files,
Gen Corresp, 334 (Postwar Policy Committee, Cor-
resp), MDR; Rpt, Postwar Policy Committee, 28 Dec
44, OCG Files, Gen Corresp, Groves Files, Fldr 3,
Tab A, MDR; Memo, Groves to Harrison, 19 Jun
45, OCG Files, Gen Corresp, Groves Files, Fldr 3,
Tab H, MDR; Hewlett and Anderson, Xew World.
pp. 324-25.
new development to achieve effective
international relations with the Soviet
Union. Meeting with Churchill in
April and Roosevelt in August, the
Danish scientist zealously conveyed
his convictions to both of the wartime
leaders. Bohr experienced little suc-
cess in communicating his ideas to
Churchill, but he received a much
more sympathetic hearing from
Roosevelt, who promised to take up
the matter with Churchill at their next
meeting. ^^
Roosevelt next met with Churchill
in early September at the Octagon
Conference in Quebec, ^° called to
plan for the final campaigns against
Germany and joint operations against
Japan, but it apparently was not until
Churchill's two-day visit to Hyde Park
following the conference that the two
leaders discussed Bohr's proposals.
With Admiral Leahy present, they
considered the Danish scientist's sug-
gestions for ending the secrecy of the
bomb and negotiating an agreement
with Russia to avoid a postwar arms
race, but decided that his ideas were
premature. They then turned to post-
war Anglo-American atomic relations,
including the possibilities of industrial
2^ Bohr visited the Soviet embassy in London in
April 1944 to pick up a letter from Peter Kapitza,
the Russian physicist who had been a member of
Ernest Rutherford's research team at Cambridge
University's Cavendish Laboratory in the 1920's.
Kapitza, upon hearing of Bohr's escape from Den-
mark, wrote to invite him to come with his family to
the Soviet Union to continue his scientific work. For
a detailed description of this and other aspects of
Bohr's activities in the spring and summer of 1944
see Gowing, Britain and Atomic Energy, pp. 346-48.
See also Memo, [Bohr], 3 Jul 44, and Ltr, Bush to
Bundv, 25 Apr 45, with inclosure bv Felix
Frankfurter. HB Files, Fldr 19, MDR.
^° For a detailed account of the Octagon Confer-
ence see MatlofT, Strategic Planning for Coalition War-
fare. Ch. XXIIL
THE ATOMIC AGE AND IIS PROBLEMS
565
application, which Churchill perceived
could contribute to British economic
recovery, a subject he had discussed
with Roosevelt at Quebec.
Agreeing that the wartime atomic
partnership should continue after the
war, the Prime Minister and the Presi-
dent recorded their views in a brief
aide-memoire, typed on Churchill's offi-
cial stationery and initialed in red ink
by both leaders. In it they rejected
any immediate announcement of the
existence of the Manhattan Project
and called for continuing "the utmost
secrecy"; they recommended that the
bomb "might perhaps, after mature
consideration, be used against the
Japanese, who should be warned that
this bombardment will be repeated
until they surrender"; and they
agreed that "full collaboration be-
tween the United States and the Brit-
ish Government in developing Tube
Alloys for military and commercial
purposes should continue after the
defeat of Japan unless and until ter-
minated by joint agreement." For the
two leaders, the aide-memoire constitut-
ed a preliminarv statement of their
hopes and fears concerning future
use and control of the newly evolving
revolutionary source of energy, espe-
cially in its application to develop-
ment and proliferation of nuclear
weapons.^ ^
^^Aide-memoire, Roosevelt and Churchill, sub:
Tube Alloys, 18 Sep 44, FDR. Admiral Ixahv, in his
account of the Hyde Park meeting, states that the
aide-memoire was signed on 19 September, but this
appears to be incorrect. See William D. Leahv, /
Was There (New York: W'hittlesev House, McGraw-
Hill Book Co.. 1950), pp. 265-66. I'his account of
the atomic discussions at Hvde Park is based on Ms,
"Diplomatic Hist of Manhattan Proj," pp. 33-34,
HB Files, Fldr 111, MDR; Winston S. Churchill, The
Second World War: Tnitmph and Tragedy (Boston:
Houghton MifHin Co.. 1953), 160-62; Groves, Xow
It Can Be Told. pp. 401-02; Hewlett and Anderson,
Meanwhile, Bush and Conant, un-
doubtedly influenced by the growing
unrest among project scientists as
well as by the progress of the war in
Europe, also sought to instigate plan-
ning for postwar control and use of
atomic energy. The day after the
Hyde Park meeting (about which they
knew nothing), the two scientific lead-
ers wrote to Secretary Stimson, point-
ing out that the time was approaching
when the public would have to be in-
formed about atomic developments
during the war and when national leg-
islation would have to be enacted and
diplomatic measures taken. Release of
information, preferably in the form of
a detailed history, would become es-
sential, they believed, either when the
bomb was used against the enemy or,
if Japan surrendered before that hap-
pened, when the war ended. Basic
atomic knowledge, they warned Stim-
son, could not be kept secret and for
a government to assume that by
doing so it would become secure
"would be extremely dangerous."
The Secretary, Bush and Conant sug-
gested, should talk to the President
about drafting legislation to establish
a "national commission" and a treaty
with Great Britain and Canada that
would continue and extend the war-
time arrangements for interchange of
technical information.^^
Three days later, Bush received an
unexpected summons to the White
House to bring the President up-to-
date on atomic developments. When
Xew World, pp. 326-28; Gowing, Bntam and Atomic
Energy, pp. 358-60 and 447 (App. 8 gives text of the
aide-memoire) .
32 Memo, Bush and Conani to Secv War, sub: Re-
lease of Info to the Public. 19 Sep 44, HB Files,
Fldr 108, MDR.
566
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Roosevelt introduced Bush to Lord
Cherwell, Churchill's scientific advis-
er, and Admiral Leahy and then
began talking generally about the
bomb and interchange with the Brit-
ish without regard to Cherwell's con-
tinued presence, the OSRD director
became aware that the President had
been carrying on freewheeling dis-
cussions with Churchill, Bohr, and
others without benefit of consultation
with his regular advisers on atomic
matters. Without mentioning the aide-
memoire, Roosevelt stated that he had
talked to Churchill about complete
interchange as a way of keeping Brit-
ain strong after the war. Greatly con-
cerned by Roosevelt's indication that
he was plunging ahead with postwar
planning for atomic energy without
sufficient guidance from those with an
expert knowledge of atomic matters.
Bush suggested that the President
should have a talk with Stimson.
Roosevelt agreed, but when Bush
proposed to Stimson three days later
(25 September) that he point out to
the President the dangers of an inter-
national armaments race if Russia
were not permitted to share in the in-
terchange of scientific data, the Secre-
tary demurred. He did not think, he
told Bush, that he could hold the
President's attention long enough to
impress upon him the seriousness of
the prospect. Bush then suggested
that he and Conant prepare a state-
ment on international control that
Stimson could then pass on to the
President. The Secretary consented to
this arrangement.^^
Bush and Conant submitted a state-
ment on the "salient points concern-
ing future international handling of
[the] subject of atomic bombs" on 30
September. They elaborated in some
detail "on the international post-war
aspects ... of great importance to
the future peace of the world" and
predicted a successful demonstration
of an atomic bomb capable of a blast
damage equivalent to 1,000 to 10,000
tons of ordinary explosives before 1
August 1945. But, they continued,
this enormously powerful weapon was
only the first step in "an expanding
art." The future was likely to bring
development of a "super-super
bomb" using heavy hydrogen that
would produce blast damage equal to
that of "1,000 raids of 1,000 B-29
Fortresses delivering their load of
high explosives on one target." Be-
cause any nation having the necessary
technical and scientific resources
could produce in three or four years
atomic bombs equivalent to those the
United States and Great Britain would
soon have, the advantage held by
these two countries was only tempo-
rary.^'* Given the ever-present possi-
^''The President apparently had turned over his
copy of the aide-memoire to his file room without ever
mentioning its existence to anyone associated with
the Manhattan Project. Not until after Roosevelt's
death in April 1945 did Manhattan leaders learn of
the aide-memoire from British sources, and not until a
decade later was the original American copy discov-
ered, misfiled, in the Roosevelt papers, FDR. See
also Conference Memo, Bush, 22 Sep 44; Memos,
Bush to Conant, 23 and 25 Sep 44. All in OSRD.
Hewlett and Anderson, \ew World, pp. 326-29.
Stimson Diary, 25 Sep 44, HLS.
^■* The prediction of Bush and Conant as to how
Icjng other nations having the requisite resources
would require to produce an atomic bomb equiva-
lent to that developed by the United States in 1945
proved to be amazingly accurate. President Truman
announced in September 1949 that the Soviet
I'nion had achieved an atomic explosion, only
slightlv more than four years after the Americans
had set off the first such explosion at Alamogordo
in Julv 1945. See A>«' York Times, 24 Sep 49.
THE ATOMIC ACiE AND US PROBLEMS
567
bility of "the accidents ot research,"
another country might attain as great
a temporary advantage as the United
States and Great Britain then held.
Nor was a continuing policy of com-
plete secrecy after the war likely to
prevent other countries from produc-
ing nuclear weapons, for all the basic
scientific facts necessary to do so
already were known to physicists.
Hence, the soundest policy was to
disclose completely, as soon as the
first bomb had been demonstrated,
the history of its development in the
United States, keeping secret only
"manufacturing and military details."
Complete secrecy was certain to
result in an international armament
race, with secret development in the
Soviet Union and other countries.
Not even control of most of the
world's supply of uranium and thori-
um would prevent development of
the super-super bomb, using heavy
hydrogen, the supply of which is vir-
tually unlimited. The wisest solution
for the postwar period was "free in-
terchange of all scientific information
on this subject . . . under the auspic-
es of an international office that de-
rived its power from whatever asso-
ciation of nations is developed at the
close of the present war. . . . Under
these conditions," Bush and Conant
concluded, "there is reason to hope
that the weapons would never be em-
ployed and indeed that the existence
of these weapons might decrease the
chance of another war.^^
^^Qiiotations in paragraphs on Bush-Conant
statement from Memo, Bush and Conant to Secv
War, sub: Sahent Points Re Future International
HandHng of Atomic Bombs, 30 Sep 44, Incl to Ltr,
same addiessees, same date, HB Files, Fldr 09,
MDR. Copies of the letter are also in ()C-C Files,
Gen Corresp, MP Files. Fldr 10, lab A. and Fldr
26, Tab L, MDR.
The Bush-Conant statement
brought no immediate reaction from
Stimson. Toward the end of October,
the Secretary talked to Bush about
some of the points made in it, but he
did not indicate what action he in-
tended to take. Bush's own view at
the time was that Stimson should
comment on the points and then send
them on to the President. Foreshad-
owing the ultimate establishment of
the Interim Committee, the OSRD
chief also suggested that Roosevelt
was going to need an advisory group
to guide him in reaching decisions on
atomic matters, but he felt the time
was not quite propitious yet for sug-
gesting it to the President. Harvey
Bundy also proposed such a group.
He visualized a six-man commission
comprised of a representative of the
Secretary of War, the Secretary of
State, and the Secretary of the Navy,
and three scientists familiar with the
atomic project. After atomic weapons
had been used, this commission
would assist the President in prepar-
ing a brief public statement about the
importance and characteristics of
atomic energy and in outlining a pro-
gram for its temporary and its perma-
nent control in the United States. ^^
Not until early December did Bush
have another opportunity to broach
the subject of future atomic energy
problems at the War Department. On
the eighth, at a meeting with Bundy
and John J. McCloy, the Assistant
Secretary of War, Bush suggested that
the President should immediately
nominate an advisory group to pre-
^^ Hewlett and Anderson, Xeiv World, p. 330;
Memo, Bush to Conant, 24 Oct 44. OSRD: Memo,
Bundv to Secv War, 16 Nov 44, HB Files, Fldr 108.
MDR.
568
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
pare press releases, draft legislation,
and advise on the development of a
postwar experimental program, em-
phasizing the need for bringing the
Department of State into the planning
for the international aspects of atomic
energy. Subsequently, both Bundy
and Bush briefed Stimson on the sub-
stance of the discussion. While agree-
ing that the State Department had to
be informed soon, Stimson was still
not ready to make decisions on an ad-
visory committee or international ex-
change. Months would pass before he
reached a decision on either matter.^'
After Roosevelt's death, Stimson
went to Truman with a suggestion to
appoint an advisory group on atomic
energy. The resulting Interim Com-
mittee, which began meeting in May,
did not take up the discussion of
postwar legislation for domestic con-
trol of atomic energy until July. On
the nineteenth, the committee consid-
ered the first draft of an atomic
energy bill, prepared by two War De-
partment lawyers — Brig. Gen. Ken-
neth C. Royall and William L. Mar-
bury. Under guidance from George
Harrison and with technical assistance
from the Manhattan District, Royall
and Marbury in drawing up the draft
bill had included the Bush-Conant
proposals and incorporated the basic
premise that, in the postwar period,
atomic energy would have to continue
to receive substantial federal support
and remain under strong federal
control. ^^
^'Conference Memo, Bush, 8 Dec 44; Memo,
Bush to Conant, 13 Dec 44. Both in OSRD. Hewlett
and Anderson, \eu' World, pp. 330-31.
^«Rovall-Marburv draft bill, 18 Jul 45, HB Files,
Fldr 77, MDR (copv also in OSRD); Notes on Inter-
im Committee Mtg, 19 Jul 45. MDR; Hewlett and
.Anderson. Xrw World, pp. 412-14.
Many provisions seemed closely
patterned after the wartime program,
including continuation of essentially
military control with no significant re-
laxation of security restrictions on re-
search and development activities.
The nine-man commission proposed
by the bill — five civilians, two repre-
sentatives of the Army and two of the
Navy — resembled the Military Policy
Committee. The commission was to
be a part-time advisory group, whose
members could hold other govern-
ment positions and would receive no
compensation. Assisting the commis-
sion would be four advisory boards
on military applications, industrial
uses, research, and medicine, each
comprised of technical experts ap-
pointed by the commission. Serv-
ing the commission would be a full-
time staff headed by an administrator
and deputy administrator, an ar-
rangement not unlike that of Groves
and Nichols in the Manhattan Project,
particularly because the commission
could delegate all of its powers to
these officials.
The extensive powers granted to
the commission — in this Royall and
Marbury followed the earlier sugges-
tions of Bush and Conant — were simi-
lar to those held by the Army in the
wartime program. They included cus-
tody of raw materials, facilities and
equipment, technical information and
patents, and all contracts and agree-
ments related to production of fis-
sionable materials. As in the Manhat-
tan Project, the administrator would
have authority to carry on atomic re-
search in commission-owned facilities
or to have it done by other institu-
tions under contract. For this or any
other commission activities, he would
THE ATOMIC AGE AND IIS PROBLEMS
569
have broad powers to acquire proper-
ty, facilities, or services. The commis-
sion would administer its own securi-
ty, personnel, and audit regulations.
Finally, the bill provided that the
commission would direct, supervise,
and regulate all atomic activities,
even those pursued by outside
organizations.^^
Bush and Conant felt that the two
War Department lawyers had granted
the commission more sweeping
powers than were needed for a peace-
time organization. They also pro-
posed, and Groves and Harrison
agreed with them, that only civilians
should be members of the commis-
sion. Harrison noted that the armed
services would be adequately repre-
sented on the advisory board on mili-
tary applications. "^^
The War Department asked Gener-
al Royall to revise the bill on the
basis of the comments made by Man-
hattan leaders and Interim Committee
members. With the objective of
making only minor changes so as to
provide the basis for compromise, he
reduced the number of officers on the
commission to four and, to a limited
extent, the commission's powers over
nuclear research, stating that its mis-
sion would be to minimize interfer-
ence in private research and to make
more use of it.
But these modest changes did not
satisfy Bush, who requested that the
War Department bill be completely
reviewed with the aim of subjecting
the commission to the usual govern-
ment controls except where exemp-
tions were clearly necessarv. The bill
underwent several revisions in late
July and early August, yet it did not
fundamentally change in its original
approach and continued to prescribe
a considerable amount of military
control and governmental dominance
in nuclear research activities. Conse-
quently, when the War Department
submitted its proposals for domestic
control of atomic energy to Congress,
they largely took the form and direc-
tion laid down in the Royall-Marbury
bill.^i
Postwar International Aspects
After the atomic bombing of Japan,
the problem of international control
of atomic energy loomed large for the
leaders of the American and British
governments, and each gave the
matter their immediate attention. ^^ In
his 9 August radio message to the
American people on the Potsdam
Conference, President Truman de-
clared that the United States intended
to make the new force of atomic
energy into a weapon for peace and
that information on weapon design
»9R()vall-Marbiiiv draft bill. 18 Jul 45, MDR;
Hewlett and Anderson, .\>zr World, pp. 412-13.
""Notes on Interim Committee Mtg, 19 Jul 45.
MDR; Ltr, Bush to Harrison, 19 Jul 45, OSRD.
"' Ltr, Bush to Harrison, 7 Aug 45, OSRD; Inter-
im Committee Log, 20 and 25 Jul 45, MDR: Draft
bills, Jun-Sep 45, prepared by MD legal stafl for In-
terim Committee, Admin Files, Gen Corresp, 032.1
(Atomic Legislation), MDR.
"^Except as otherwise indicated, section based on
MDH, Bk. 1, Vol. 4, pp. 7.1-7.17, DASA; Groves,
\ou< It Can Be Told. pp. 409-12; Hewlett and Ander-
son, Xew World, pp. 465-81 and 531-619; Truman,
Memoirs, 1:523-51 and 2:5-16. Most of the diplo-
matic documents pertinent to the efforts at interna-
tional control mav be found in the U.S. Department
of State, General: Political and Economic Matters. For-
eign Relations of the United States, Diplomatic
Papers, 1945, Vol. 2 (Washington, D.C.: Govern-
ment Printing OHke, 1967), pp. 1-99; ibid.. General:
The i'nited Xations. Foreign Relations of the I'nitcd
States, Diplomatic Papers, 1946, Vol. 1 (Washing-
ton, D.C;.: Ciovernment Printing Office, 1972), pp.
1197-259.
570
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
and production would not be released
to the rest of the world until adequate
means of control had been estab-
lished. After reading the President's
statement, Prime Minister Clement
Attlee promptly endorsed it, and on
13 August he publicly stated his sup-
port of the "preparation of plans for
the future control of the bomb ... to
the end that its production and use
may be controlled and that its power
may be made an overwhelming influ-
ence towards world peace." ^^
In a memorandum to Truman on
II September,'*'* Secretary Stimson
advised the President that the best
policy for international control would
be for the United States, with British
support, to make a direct approach to
the Soviet Union, proposing joint ar-
rangements for limiting use of the
bomb and encouraging development
of atomic power for peaceful and hu-
manitarian purposes. A few days later,
at a meeting of the President's Cabi-
net, Vannevar Bush and Under Secre-
tary of War Patterson joined with
Stimson in support of direct negotia-
tions with the Soviets. Other mem-
bers of the Cabinet, however, op-
posed sharing the secrets of atomic
energy with the Soviet Union and the
rest of the world.
The American government, howev-
er, was under continuing pressure
from the British to institute interna-
tional control measures as quickly as
possible. From the standpoint of the
British, who wanted to implement the
■•^ Telg, Attlee to Iruman, 1 I Aug 45, with text of
the Prime Minister's statement released on 13
August, reproduced in IS. Department of Stale,
General: Political and Ecoiidiiiu Matters. 1945. \'ol. 2,
p. 40.
"'' 1 he full text ol this memorandum is repro-
duced in Stimson and Bund\, On Actwe Sen'ire. pp.
541-46,
Hyde Park aide-memoire provision as-
suring them full collaboration "in de-
veloping Tube Alloys for military and
commercial purposes . . . after the
defeat of Japan . . ." and to secure a
revision of the 1943 Quebec Agree-
ment provision that restricted their
access to information pertinent to the
industrial and commercial applica-
tions of atomic energy, these interna-
tional measures were essential not
only to ensure that the atomic bomb
would be used in the interest of world
peace but also to facilitate new
agreements on a postwar atomic
partnership.'*^
Taking cognizance of the British
desire for prompt action, President
Truman in his 3 October message to
Congress stated emphatically that a
discussion on an international control
policy could not wait until the United
Nations Organization began function-
ing. Negotiations must begin at once
with the United Kingdom and
Canada, and then subsequently with
other nations, for the purpose of
working out "arrangements covering
the terms under which international
collaboration and exchange of infor-
mation might safely proceed." '*^
Consistent with this objective,
Truman at the end of the month ac-
cepted Prime Minister Attlee's re-
quest for a meeting with him and Ca-
nadian Prime Minister William Lyon
Mackenzie King.
In preparation for this conference,
scheduled to open in Washington on
1 1 November, both Secretary of State
Byrnes and Secretary of War Patter-
son (who had replaced Stimson on
Aide-memoire. 18 Sep 44, KDR.
Truman, .Memoirs. \:b'M).
THE ATOMIC AGE AND ITS PROBLEMS
571
27 September) consulted extensively
with Bush and Ciroves. When Bush,
on his own initiative, visited Byrnes
on 3 November to urge adoption of a
definite policy on international con-
trol, the Secretary asked him to pre-
pare a written statement of his views
of w hat needed to be discussed by the
three heads of state. Sensing a lack of
preparation by the State Department
for the upcoming conference. Secreta-
ry Patterson had members of his War
Department staff draw up proposals
to be discussed. Both Groves and
Bush were called in for consultation
by Byrnes on the eighth and by Pat-
terson on the tenth to revise the War
Department proposals. When the
actual conversations on atomic energy
began, Truman and Byrnes advanced
the proposals set forth in the state-
ment Bush had prepared for the Sec-
retary of State and the British agreed
to them as an agenda without pre-
senting any counterproposals. Byrnes
then called in Bush on the twelfth to
assist in preparation of the confer-
ence communique.
On 15 November, the three politi-
cal leaders announced their conclu-
sions on atomic energy in the
Truman-Attlee-King Declaration.
They agreed that an open exchange
of the fundamental scientific aspects
of atomic energy with other nations
of the world was desirable to facilitate
its development for peaceful pur-
poses; however, to ensure against its
use for destructive purposes, they ac-
knowledged that a limited exchange
of the specialized aspects necessary
for industrial application must be en-
forced until such time as the United
Nations could establish international
controls. I'o achieve these controls,
thev recommended that the United
Nations set up an international
organization to function under its
auspices.
1 he three leaders also directed that
steps be taken to work out a new
basis for Anglo-American collabora-
tion in atomic energy matters in the
postwar period. They delegated the
task of preparing a suitable directive
to Patterson and Sir John Anderson.
Patterson called in Groves and Harri-
son to advise him, and the two, work-
ing with members of Sir John's staff,
prepared two memorandums issued
on 16 November. The first memoran-
dum stated that there should continue
to be full and effective cooperation
between the three states in atomic
energy matters, that the Combined
Policy Committee and Combined De-
velopment Trust should be perpetuat-
ed,^^ and that the committee should
work out an appropriate basis for
future collaboration. The second doc-
ument, "Memorandum of Intention,"
set forth detailed guidelines for the
committee to follow in developing a
new agreement to replace the Quebec
Agreement.
For the period of several months,
the Combined Policy Committee en-
deavored to work out suitable terms
of a new Anglo-American agreement.
It turned over to a subcommittee —
composed of British embassy staff
member Roger Makins, Canadian
Ambassador Lester B. Pearson, and
General Groves — the task of drafting
a report with scientific recommenda-
tions for inclusion in a new agree-
ment. When completed, the subcom-
mittee's report called for the rescind-
^'^ The cslahlisluiu'iil and work ol ihcst- intern;
tional adxisorv groups are discussed in detail i
C;hs. X and XIII.
572
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
ing of the provisions in the Quebec
Agreement that had restricted British
development of atomic energy for in-
dustrial and commercial purposes and
proposed that each signatory state de-
velop the means for full and effective
interchange of information required
for its atomic activities; agree not to
disclose information or enter into
negotiations with outside states
concerning atomic energy without
prior discussion and policy determi-
nation; undertake measures not only
to control uranium and thorium de-
posits within its own borders but also,
through established international ore
control agencies, to acquire foreign
ore deposits; and coordinate and con-
sult with each other before using nu-
clear weapons against other states.
Subcommittee members did not nec-
essarily agree on all points outlined in
the submitted report. General Groves,
for example, noted that inclusion of
many of the suggested provisions,
especially those on full and effective
interchange, would give the agree-
ment the effect of a secret military
treaty in violation of Article 102 of
the United Nations Charter.
On 15 February 1946, the Com-
bined Policy Committee considered
the subcommittee's proposals for a
new agreement. Committee members
were inclined to agree with Groves
that many of the recommended provi-
sions would violate Article 102. One
member suggested that this conflict
with the United Nations Charter be
avoided by continuing Anglo-Ameri-
can cooperation on atomic matters
under terms of the Quebec Agree-
ment. But Lord Halifax, the British
ambassador who had replaced Sir
Ronald Campbell on the commit-
tee, objected that the wartime agree-
ment did not meet postwar require-
ments, especially on exchange of
information.
At the next committee meeting on
15 April, Halifax shifted his position.
The United Kingdom would be will-
ing, he said, to accept the proposal
for continued collaboration under the
Quebec Agreement and the Declara-
tion of Trust in the area of raw mate-
rials, provided that these two docu-
ments were amended to meet postwar
requirements as outlined in the sub-
committee's proposals. This compro-
mise was unacceptable, however, to
the American members (Byrnes, Pat-
terson, and Bush) because they did
not think it would eliminate the con-
flict with Article 102. Finding itself in
a deadlock, the committee turned the
problem back to the heads of state.
Truman and Attlee were unable to
make further progress toward the full
and effective cooperation they had set
as a goal. In fact, Attlee's strongly
worded plea to President Truman in
June 1946 went unanswered, because
Congress was about to enact domestic
legislation placing additional restric-
tions on release of atomic information
that cast further doubt on the feasibil-
ity of any kind of interchange.
From May until the end of 1946,
Anglo-American cooperation on
atomic energy continued to function
under the Quebec Agreement and the
Declaration of Trust. Practically
speaking, collaboration was limited
essentially to the area of raw materi-
als. In late July, for example, the
Combined Policy Committee ap-
proved the Groves-Makins-Chadwick
formula for allocating in 1946 the
larger share of the available supply of
uranium ore to the United States so
THE ATOMIC AGE AND IIS PROBLEMS
573
that the Manhattan Project had a suf-
ficient amount to meet the needs of
its bomb production program. It also
adopted a Combined Development
Trust proposal designed to ensure a
fair allocation of the costs of raw ma-
terial received by each country
through the Trust since V-J Day.
As the date neared for a civilian
agency to take over control of the
program in the United States, Attlee
wrote to Truman that he felt the time
was opportune to resume discussion
of cooperation. The President prom-
ised to take up the question in the
near future, but reminded the Prime
Minister that Combined Policy Com-
mittee discussions had revealed con-
siderable differences in interpreting
the 16 November memorandum by
the two countries and that new legis-
lation for domestic control in the
United States contained provisions
that would further complicate
collaboration.
Many factors had contributed to the
breakdown of efforts to establish ef-
fective Anglo-American cooperation.
Among them were the lingering
American distrust of the British
dating back to wartime incidents, the
continuing problem of security (rev-
elations in early 1946, for example, of
espionage in the Canadian program
that pointed up once again the inher-
ent threat in information inter-
change), and the determination of the
United States not to jeopardize
achievement of international control
through the United Nations with too
close a relationship to the British.
In the efforts of the United States
in late 1945 and in 1946 to establish
in the United Nations an effective
system for the international control of
atomic energy, members and former
members of the Manhattan Project
played a considerable role in assisting
the State Department, the agency re-
sponsible for developing America's
proposals. Foreign ministers of the
Soviet Union, the United Kingdom,
and the United States met in Moscow
from 16 to 20 December 1945 and
agreed, as enunciated in the Truman-
Attlee-King Declaration of 15 No-
vember, to form a United Na-
tions Commission on Atomic Energy,
with representatives from each state
on the organization's Security Coun-
cil, and from Canada when it was not
a member of the Council. On 24 Jan-
uary 1946, the United Nations Gener-
al Assembly approved the British res-
olution authorizing establishment of
the Commission on Atomic Energy
and scheduled its first meeting
in New York City for June. In
March, President Truman nominated
Bernard M. Baruch, the well-known
financier and long-time adviser to
American presidents, to be the rep-
resentative for the United States
on the commission.
Meanwhile, the Secretary of State
had established a special committee
to advise him on the interchange of
atomic information with other coun-
tries. He named Dean Acheson, the
Under Secretary of State, chairman of
the committee, and appointed John J.
McCloy (who had resigned as Assist-
ant Secretary of War in November
1945 to return to the practice of law).
Bush, Conant, and Groves as mem-
bers. At its first meeting on 14 Janu-
ary, Acheson suggested that, because
the members of the committee were
busy officials who could devote only a
limited amount of time to preparation
of such a plan, the committee should
574
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
appoint a panel of consultants to as-
semble the pertinent data and draw
up proposals. General Groves object-
ed, pointing out that he, Bush, and
Conant were familiar with the prob-
lems involved.
But the special committee decided
in favor of a panel. The six mem-
bers— David E. Lilienthal of the Ten-
nessee Valley Authority, who served
as chairman, Chester I. Barnard of
New Jersey Telephone, Harry A.
Winne of General Electric, Charles A.
Thomas of Monsanto Chemical, and
J. Robert Oppenheimer, who had left
Los Alamos and returned to the Uni-
versity of California, Berkeley — sub-
mitted a draft report to the commit-
tee in early March. This draft, after
considerable revision, became the
basis for the Acheson-Lilienthal
report, a plan for step-by-step coop-
eration of the United States with the
other nations of the world in estab-
lishing international controls over
atomic energy. The report, released
on the twenty-eighth, served as a
working paper and a basis for public
discussion. The United States delega-
tion to the United Nations Commis-
sion on Atomic Energy presented the
essential points of the plan in June,
and these became substantially the
principles finally accepted by the
commission on 30 December. During
the extended deliberations, Bernard
Baruch relied heavily upon many
members and former members of the
Manhattan Project, including Groves,
who served as his consultant; Tolman,
who acted as his scientific adviser;
and a scientific panel made up of
Robert F. Bacher, an experimental
physicist who had served in various
capacities at Los Alamos, Arthur
Compton, Oppenheimer, Thomas and
Urey.
Postwar Domestic Aspects
"No matter what international
policy may be eventually worked out
for the United States and the world,"
General Groves told a congressional
committee, peacetime control of
atomic energy "is necessary to protect
America's tremendous investment in
atomic research and development and
to insure that this development will
go steadily forward." *® To achieve
this end, members of the Manhattan
Project in late 1945 and early 1946
actively participated in the planning
and ongoing discussions of the vari-
ous legislative proposals under
consideration.
Shortly after V-J Day, the Interim
Committee sent the President its re-
vised Royall-Marbury bill on atomic
energy, and the President immediate-
ly circulated the draft measure to the
various government agencies likely to
be affected by its provisions so that
they could review it. Assured by the
commitee's provision that any legisla-
tion enacted should be subject to re-
■'^ Quotation from Groves's 28 Nov 45 opening
statement in Atomic Energy Hearings on S. Res. 179. p.
32, with pertinent paragraphs reproduced in App. X
of Groves, \'ow It Can Be Told. pp. 441-42. Except as
otherwise indicated, section based on Groves, \ou' II
Can Be Told, pp. 389-98; Hewlett and Anderson,
.\ew IVorld. pp. 482-530; U.S. Congress, Senate,
Special C'ommittee on Atomic Energv, Atomic Energy
Act of 1946: Heanngs on S. 1717. 79th Cong., 2d
Sess., 22 Jan-8 Apr 46 (Washington, D.C^.: Govern-
ment Piinting Office, 1946); and on HB Files, espe-
ciallv FIdrs 6 (S-1 MPC), 15 (Hist of Atomic Bomb,
Apr 45), 63 (Working Committee, 1945-46), 65-69
and 72-74 (Interim Committee), 82 (Atomic Energv
Bill-1945), 88 (Analvses of Bills), 89 (Amendments,
Analvses, etc., of Mav-Johnson Bill, 1945), and 100
(A-1 Interim Committee-Min of Mtgs), MDR.
THE ATOMIC AGE AND ITS PROBLEMS
575
vision at the end of a two-year period,
most of the agencies gave their ap-
proval to the draft bill very quickly.
Only the State Department, which
was deeply involved in the question
of international control, threatened to
hold up its approval for an indefinite
period. But because most of the lead-
ers associated with the wartime
atomic energy project strongly felt
there should be no delay in establish-
ing a clear national policy. Secretary
Patterson secured the President's per-
mission to proceed without that agen-
cy's approval and to introduce into
Congress what came to be known as
the May-Johnson bill.'*^
On 3 October, the President in his
message to Congress emphasized the
need for prompt action on the meas-
ure to ensure preservation of the
enormous investment in atomic
energy, to provide direction for con-
tinuing research, and to establish ade-
quate controls over raw materials.
That same day. Congressman Andrew
J. May introduced the War Depart-
ment's bill. When the hearings on the
bill opened in the House Military Af-
fairs Committee on the ninth. Secre-
tary Patterson in a prepared state-
ment explained to the committee why
the Army was anxious to turn over re-
sponsibihty for atomic energy to a
peacetime organization: "The War
Department has taken the initiative in
proposing that it be divested of the
*^ rhe Interim Committee bill, in view of the
military potentialities of atomic energy and prepara-
tion of the measure under the guidance of the War
Department and Manhattan Project, was remanded
to the military affairs committees of both Houses.
Congressman Andrew J. Mav, representing a Ken-
tucky district, headed the House Military Affairs
Committee and Senator Edwin C. Johnson of (Colo-
rado was the ranking member of the Senate Military
Affairs Committee.
great authority that goes with the
control of atomic energy, because it
recognizes that the problems we face
go far beyond the purely military
sphere. The atomic bomb is the most
devastating weapon we know, but the
means of releasing atomic energy
which it employs may prove to be the
greatest boon to mankind in the
world's history. The wisest minds in
our Nation will be required to admin-
ister this discovery for the benefit of
all of us." ^°
Also appearing before the commit-
tee were Groves, Bush, and Conant.
Committee members questioned each
of them concerning the unusually
broad powers to be given to the
atomic energy commission proposed
in the bill. Groves, who first restated
the Army's desire to be relieved of
the burden of administering the
atomic energy program, posited that
the powers were necessary for the
commission to cope with its vast re-
sponsibilities. Bush granted that Con-
gress would be giving up control of
atomic energy, except for appropria-
tions and its right to revise the basic
act, but considering the enormous
hazards, he believed rigid federal con-
trol was an absolute necessity.
Conant, too, expressed the view that
the commission must be able to exer-
cise extraordinary controls for rea-
sons stated clearly in the bill itself:
"The misuse of such energy, by
design or through ignorance, may in-
flict incalculable disaster upon the
Nation, destroy the general welfare,
^° Quotation from Patterson's 9 Oct 45 opening
statement in I'.S. Congress, House. Military Affairs
Commitee, Atomic Energy Hearings on H Res. -1280,
79th Cong., 1st Sess.. 9 and 18 Oct 45 (Washing-
ton, D.C.: Government Printing Office, 1945), p. 7.
576
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
imperil the national safety, and en-
danger world peace." ^^ At the con-
clusion of the testimony, the commit-
tee prepared to end the hearings and
report the atomic energy bill back to
the floor of the House.
But adverse reaction in the Senate
Military Affairs Committee, and from
the press and public, indicated the
measure would arouse considerable
opposition. When Senator Edwin C.
Johnson introduced the bill in the
Senate committee, Senator Arthur H.
Vandenberg of Michigan, the commit-
tee's minority leader, challenged it as
dealing with a subject beyond the
competence of a standing committee
and therefore requiring consideration
by a special joint committee of Con-
gress. He had already introduced a
joint resolution proposing formation
of such a committee. By a parliamen-
tary maneuver, he was able to hold up
further consideration of the bill until
the House of Representatives voted
on his resolution.
Meantime, newly formed associa-
tions of atomic scientists at the Metal-
lurgical Laboratory and at the Clinton
Engineer Works had mobilized a
press campaign against the bill on the
grounds that it was an attempt by the
Army to railroad legislation through
Congress without the extensive hear-
ings before an impartial committee
such an important subject deserved.
They also gave voice to the suspicion
that the bill represented an attempt
by the War Department and the Navy
to secure control of the postwar
atomic energy organization, pointing
especially to the provision that would
^^ Quotation from Conant's opening statement in
ibid., p. 51. Conant was quoting from the May-John-
son bill, Declaration of Policy, Section 1 (a).
permit military officers to serve in the
chief administrative posts without
adequate supervision by the part-time
commissioners. Many scientists, too,
called attention to the severity of the
penalties provided in the bill's securi-
ty provisions (ten years in prison and
a $10,000 fine), seeing in them evi-
dence of an attempt to place undue
restrictions on scientific employees in
the postwar atomic program. Mem-
bers of the Interim Committee's sci-
entific panel, who had earlier en-
dorsed the May-Johnson bill, ex-
pressed alarm at the heavy penalties
for unauthorized release of classified
information.
These developments marked the
beginning of a prolonged legislative
battle. During the remainder of 1945,
a coalition of scientists, legislators,
and government officials exerted a
growing opposition to the May-John-
son bill, which had at first the effect
of preventing the backers of that
measure from securing its rapid en-
actment and led ultimately to its dis-
placement by a bill more acceptable
to the groups in the coalition. Becom-
ing increasingly aware of the growing
criticisms of the May-Johnson bill,
President Truman privately withdrew
his endorsement, leaving the way
open for substantial changes in the
measure. And in the Senate, support
grew for Vandenberg's proposal that
a special committee be established to
deal with atomic energy matters.
When his resolution for setting up a
joint committee of both Houses failed
to secure the required votes, Brien
McMahon, a young senator from
Connecticut, led a movement for cre-
ation of a special committee in the
Senate. Passage of a resolution subse-
THE atomic: age and rrs problems
577
quently established the Special Com-
mittee on Atomic Energy, with McMa-
hon as chairman.
Serving with McMahon were Sena-
tors Vandenberg, Johnson, Richard B.
Russell, Tom Connally, Harry F.
Byrd, Millard E. Tydings, Warren R.
Austin, Eugene D. Millikin, Bourke B.
Hickenlooper, and Thomas C. Hart.
Edward U. Condon, the physicist who
had worked at Los Alamos briefly
during the war but departed because
of his objection to security measures,
joined the committee as its scientific
adviser and James R. Newman, a
lawyer with an extensive knowledge
of science, as its special counsel. In
late November, while Newman
worked with Manhattan and other
government officials to draft a substi-
tute measure to replace the May-
Johnson bill, the committee com-
menced a series of almost daily public
hearings with the objective of inform-
ing its members and the American
people on the scientific aspects of
atomic energy. It closed the hearings
on 20 December, when Senator
McMahon introduced his new bill,
and reconvened them in late Januarv
1946.
As the attention of the country fo-
cused on atomic energy, opposition
grew toward any legislation likely to
give an undue amount of influence to
the military in atomic activities and
place too restrictive controls on nu-
clear research and scientists. The
movement, an aspect of widespread
postwar weariness with things mili-
tary, received extensive support
among scientists employed on the
Manhattan Project, who were by then
effectively organized as the Federa-
tion of Atomic Scientists.
In February, Secretary Patterson
and General Groves testified before
the Senate Special Committee, urging
passage of legislation generally along
the lines of the May-Johnson bill.
Both objected strongly to the provi-
sions in the McMahon bill that virtu-
ally excluded the armed services from
participation in the military applica-
tion of atomic energy. Groves, for ex-
ample, contended that no shift in em-
phasis on atomic energy as a military
weapon was possible until there were
no longer wars between nations. Both
also felt that the security provisions of
the McMahon bill, based upon the
Episonage Act, were inadequate for
an area as sensitive as atomic energy.
Secretary Patterson thought the
McMahon bill placed too many re-
strictions on research in nuclear sci-
ence. Groves continued to express
preference for the May-Johnson bill's
provision that the members of the
commission be part-time, rather than
full-time as provided by the McMahon
measure, because he believed more
capable men could be secured for
part-time service. He also objected to
the McMahon bill's exclusion of active
military members from the commis-
sion and he favored the May-Johnson
bill's provision of a single executive
rather than a commission performing
the executive function. ^^
^2 Patterson's 14 Feb 46 opening statement
before the Senate Special Committee on Atomic
Energy mav be found in Alomir Energy Act Hearings on
S. 1717. pp. 389-90; the original version of the
statement, as prepared by the Secretary's office, is
in HB Files, Fldr 92 (Drafts of Secv War Testimo-
n\). MDR. (iroves's 27 Feb 46 opening statement
mav be found in Atomic Energy Act fleanngs on S.
1717. pp. 467-68: the original version of the state-
ment, as prepared bv Groves's office, is in OCXi
Files, Cen C.orresp, MP Files, Fldr 13 (Legislation),
MDR.
578
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Although the Special Committee
had reported the McMahon bill to the
Senate on 19 April, it did not come to
the floor of the Senate until 1 June.
After only three hours of debate and
a few minor amendments, the meas-
ure passed with no dissenting votes.
The bill went to the House Military
Affairs Committee on the fifth and,
after brief hearings (11-13 June), to
the House of Representatives. The
House passed the bill with major
changes on 20 July, but most of the
amendments were removed in a sub-
sequent conference session. President
Truman signed the measure on 1
August as the Atomic Energy Act of
1946. Under terms of the act, the
Army's responsibility for direction
and control of atomic energy in the
United States was to pass to a civilian
agency, the United States Atomic
Energy Commission. This legislation
also created the Military Liaison Com-
mittee and the General Advisory
Committee, which were to provide,
respectively, coordination and sup-
port on matters relating to future
military and scientific and technical
applications.^^
^^ As spelled out in the Atomic Energy Act of
1946 (Public Law 585, 79th Congress), the Atomic
Energy Commission was to consist of five civilian
presidential appointees who would serve full time
administering the program; the General Advisory
Committee, nine civilian presidential appointees
who would meet at least four times a year; and the
Military Liaison Committee, representatives of the
For the wartime leaders of the
Manhattan Project, the long-delayed
enactment of the Atomic Energy Act
marked another significant step in
their efforts to solve the problems
they faced in peacetime control of
atomic energy. Already they had
achieved success in the program for
release of public information, accom-
plished without endangering the na-
tion's security. But many were con-
vinced that provisions in the new leg-
islation were likely to be inadequate
from the standpoint of security and
ineffectual for the future military ap-
plication of atomic energy. Many also
were disappointed in the limited suc-
cess attained in reaching workable
agreements for international control
of atomic energy. They had willingly
made available their special knowl-
edge to the American, British, and
Canadian political leaders endeavor-
ing to achieve such agreements
through diplomatic negotiations and
the new United Nations Organization.
These efforts, however, clearly re-
vealed that substantive progress in in-
ternational exchange of information
and control of atomic energy would
become possible only when ways were
found to remove the numerous and
persistent causes of fundamental dis-
trust among the nations of the world.
War and Navy Departments whom the Secretaries
would detail in such numbers as deemed necessary.
CHAPTER XXVIII
The Army and the Atomic Energy
Program, 1945-1947
In the months leading up to the
end of the war, the Army's involve-
ment in the Manhattan Project had
expanded rapidly as all of its efforts
converged on completing its atomic
mission and saving the lives of thou-
sands of fighting men. With the at-
tainment of the wartime objective, the
project's military leaders expected
that the Army's administration of the
atomic energy program would be
promptly terminated and strongly rec-
ommended that the government
adopt this course of action. In Octo-
ber, while appearing before the
House Military Affairs Committee,
General Groves once again advanced
this point of view, stressing that the
Army's "responsibility for directing
all activities relating to the release
and use of atomic energy . . . should
not be continued today." Yet his solu-
tion of vesting control "in the most
representative and able body our
democratic society is capable of orga-
nizing" was not immediately possible,
and the Army was left with no alter-
native but to continue in a prolonged
and often frustrating caretaker role.^
A Postwar Trusteeship
In carrying out what Groves later
termed its "trusteeship," the Army
not only would contribute significant-
ly to preserving much of the wartime
program but also, in spite of wide-
spread opposition to its influence,
would have an opportunity to leave
its imprint on the character of the
peacetime program. "The War De-
partment will always have a vital in-
terest ... in atomic energy," Groves
told the Senate's Special Committee
on Atomic Energy, and "in the field
of practical administration and oper-
ation the Army can furnish invaluable
assistance." ^
While Congress and the country
debated the issue of a successor orga-
nization during late 1945 and early
1946, the Army experienced a diffi-
cult period of transition because of a
number of critical operational and ad-
ministrative problems at Manhattan's
production and research facilities. Es-
* Quotations from Groves's 9 Oct 45 opening
statement in Atomic Energy Heanngs on H. Res. 4280.
p. 9, with pertinent paragraphs reproduced in App.
IX of Groves, \ow It Can Be Told, pp. 440-41. A
copy also may be found in HB Files, Fldr 66, MDR.
2 Qiiotations from Groves's 28 Nov 45 opening
statement in Atomic Energy Hearings on S. Res. 1/9. p.
31, with pertinent paragraphs reproduced in .App. X
of (Proves, Xow It Can Be Told. pp. 441-42.
580
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
pecially challenging was the serious
manpower problem that resulted
from the process of postwar demobili-
zation. "Because of the current uncer-
tainty," Groves had warned the
Senate committee in November 1945,
"we are losing key people whose ser-
vices should be retained. Until that un-
certainty is resolved by the establish-
ment of a national policy, . . . [the
project will experience an] apprecia-
ble loss of the present efficiency of
the vast combination of plants, scien-
tific talent, and engineering skill." ^
Project Operations and Problems
In the weeks immediately after the
surrender of Japan, while Manhattan
District teams were collecting data on
the effects of the Hiroshima and Na-
gasaki bombings and tracing the
progress of Japanese scientists in the
field of atomic energy. General
Groves and his staff were preparing
to convert the atomic program to a
peacetime status. As perceived by
Groves, the Army's responsibility
during the transitional period would
be keeping the wartime program
functioning efficiently, closing down
those elements that were no longer
needed, completing construction
projects already in progress, and
maintaining as far as feasible an
effective working organization in
face of the eroding pressures of
demobilization.
To facilitate the Army's interim
stewardship of the atomic program,
Groves and his staff drafted a plan for
postwar project operations.* Under
this plan, fissionable materials pro-
duction at the Clinton and Hanford
Engineer Works would be reduced by
about 15 percent, thus cutting operat-
ing costs more than 30 percent and
achieving an appreciable savings in
uranium; weapons production at the
Los Alamos Laboratory would contin-
ue, but at a somewhat lower rate, with
the objective of building a stockpile
of twenty bombs. Project operations,
Groves emphasized, would proceed at
this curtailed rate only until Congress
reached a decision on America's
future atomic energy policy. In late
August, following the Military Policy
Committee's approval of his plan, the
Manhattan commander submitted it
to the Secretary of War and the Chief
of Staff for their endorsement. After a
close review, Stimson and Marshall
concurred with the provisions of the
plan.
An obvious first step to implement-
ing Grovcs's plan was to close down
less efficient production units, to
achieve the most economical use of
money, manpower, and materials. In
early September, the District shut
down the thermal diffusion plant at
Clinton and placed the Alpha race-
tracks of the electromagnetic plant on
standby. Additional Beta facilities
under construction would be ready in
November to provide much more effi-
cient enrichment facilities than the
unreliable Alpha calutrons. Further-
more, upper stages of the gaseous
^ Quotation from Ainmu Energy Hearings on S. Res.
179, p. 32. See also Statement by General Groves
on Dissolution of Manhattan Engr Dist, 14 Aug 47,
Admin Files, Gen Corresp, 319.2 (Misc), MDR.
■• For details of Groves's plan see Memo, Groves
to Chief of Staff, 23 Aug 45, OCG Files, Gen Cor-
resp, MP Files, Fldr 2, 1 ab A, MDR. Groves appears
to have based his plan on Draft Memo, Groves (pre-
pared by Nichols) to Secv War, 13 Aug 45, OCG
Files, Gen Corresp, Groves Files, Fldr 17, Tab K,
MDR.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1945-1947
581
diffusion plant, which had proved to
be the most efficient producer of
partly processed uranium feed, had
become operational in mid-August,
making available higher assay feed for
the Beta enrichment process. The
District also decided to complete con-
struction of the plant's K-27 side-feed
extension unit, scheduled to be ready
for full operation by early 1946.
At Hanford, the District directed
Du Pont to continue operation of all
three production piles but to shut
down one of the two chemical separa-
tion plants. It also closed the last of
the three heavy water plants that the
project had built in the United States;
two had ceased operation before V-J
Day. The plant at Trail (British Co-
lumbia) continued in operation, but
the District recommended that by Jan-
uary 1946 partial control be turned
over to the Canadian firm (Consoli-
dated Mining and Smelting Company)
operating it.
In contrast to Clinton and Hanford,
the future of postwar operations at
Los Alamos was more problematic be-
cause of the combination of produc-
tion activities with an extensive re-
search and development program.
Under Groves's plan, bomb produc-
tion at Los Alamos was to continue at
least until completion of an adequate
stockpile of weapons. But the labora-
tory was no longer the base of oper-
ations for bomb production. Soon
after the end of the war, the engi-
neering group of the laboratory's ord-
nance division had decided to consoli-
date much of its weapon assembly ac-
tivities at Sandia Base, located directly
east of Kirtland Field on the site of
Albuquerque's original airport at the
southern edge of the city. Beginning
in September 1945, to support bomb
production activities at Sandia, essen-
tial technical and military personnel
from Los Alamos and all project per-
sonnel and facilities from Wendover
Field transferred to the Albuquerque
site. Finally, in early 1946, most of
the remaining members of the engi-
neering group relocated there. ^
Another problem in Los Alamos
operations was the progressive ero-
sion of its scientific and technical per-
sonnel. Because of the uncertainty of
the laboratory's future, many wartime
scientists and technicians prepared to
resign and return to civilian pursuits.
Some, of course, would have depart-
ed under any circumstances; the war
was over and they had jobs waiting in
universities, scientific laboratories, or
industry. Others were tired of the
security restrictions or disliked the
isolation and unfavorable living
conditions.
To deal with this personnel prob-
lem. General Groves and Oppen-
heimer, who was himself returning to
the University of California at Berke-
ley, met with the scientists and techni-
cians in the weeks following the end
of the war. During these meetings the
^ The immediate postwar history of the bomb
production groups at Los Alamos and Sandia Base
is covered in some detail in Frederic C. Alexander,
Jr., Hutory of Sandia Corporation Through Fiscal Year
1963 (Albuquerque, N.Mex.: [Sandia Corp.], 1963,
pp. 1-14. See also MDH, Bk. 8. Vol. 2, "Technical,"
Supp., pp. VIII.1-VIII.7, DASA. In the transition
period from July 1945 to July 1947, the total
number of nuclear components for bombs produced
was about eighteen (seventeen implosion, one gun),
which included those for the test device exploded at
Trinity, the two bombs used on Hiroshima and Na-
gasaki, and the two exploded in Operation Cross-
roads. An estimated twenty-nine mechanical assem-
blies for implosion bombs were available in June
1947. See David Rosenberg. "U.S. Nuclear Stock-
pile, 1945 to 1950," Bulletin of the Atomic Scientists 38
(May 82): 25-30. The above figures are derived
from Table, p. 26.
582
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
two leaders assured the staff members
that the laboratory would continue to
be a center of weapons research, that
security would be less strict, and that
the work schedule would be more re-
laxed. Even the newly appointed in-
terim laboratory director, Comdr.
Norris Bradbury, joined in the efforts
to arrest the outflow of personnel. At
a briefing in October, he outlined a
program of the activities he hoped
would be sufficiently attractive to
hold some of the scientific staff —
reengineering implosion weapons, re-
search on the feasibility of the hydro-
gen bomb, further Trinity-type tests,
and study of constructive uses of
atomic energy. But despite these ef-
forts, the laboratory by early 1946
was seriously short of both scientific
and technical personnel.^
Manhattan's other research and de-
velopment centers experienced diffi-
culties similar to those at Los Alamos.
Sensing that a time of uncertainty
would follow employment of the
bomb, project scientists had long
been proposing possible areas for
® This account of developments at L.os Alamos
from August to December 1945 is based on Hewlett
and Anderson, New World, pp. 625-27; Groves, Xow
It Can Be Told, pp. 377-79; MDH, Bk. 8, Vol. 2,
Supp., passim, DASA. Commander Bradbury, a
physicist, served for four years at the Naval Proving
Ground (Dahlgren, Virginia) before coming to Los
Alamos in 1944 to head the field test program for
the implosion bomb. He subsequently worked on a
variety of other programs at the laboratory. On the
interim director's efforts see Ltr, Bradbury to
Groves, 3 Nov 45, 322 (Los Alamos); Ltr, Bradbury
to Lt Col Stanley L. Stewart (Los Angeles), 14 Nov
45, 600.12 (Los Alamos); Ltr, Bradbury to Groves,
23 Nov 45, 600.12 (Projs and Prgms). All in Admin
Files, Gen Corresp, MDR. For Groves's views on re-
placing Oppenheimer see Draft Memo for Record,
Groves, 13 Sep 45, Admin Files, Gen Corresp, 001,
MDR. On the departure of the British scientists
from Los Alamos see Ltr, Chadwick to Groves, 9
Jan 46, Admin Files, Gen Corresp, 201 (Chadwick,
J), MDR.
Oppenheimer Congratulating the
Troops. In one of his last official acts,
the laboratory director participated with
Col. Gerald R. Tyler, post commander,
in an aivards ceremony at Los Alamos.
continued research and development
in the field of atomic energy. They
suggested, for example, exploring
atomic energy as a source of power
for both military and civilian applica-
tions, producing radioactive isotopes
for scientific research and industrial
uses, and improving devices to
employ the tremendous explosive
energy of fission. But the Army hesi-
tated to start any research program
that would constitute long-range com-
mitments for the still to be estab-
lished successor agency to the Man-
hattan Project."^
^ On proposed postwar programs in atomic
energy see committee reports of meetings at the
Metallurgical Laboratory in the fall of 1944, which
may be found in Admin Files, Gen Corresp, 334
(Postwar Policy-CEW), MDR. See also Rpt, Scientif-
C'.ontinued
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1945-1947
583
Although most of the project's re-
search and development facilities had
to devote their time to the generally
less attractive and challenging busi-
ness of winding up wartime research,
some managed to launch their own
investigations into aspects of atomic
energy that held broader promise for
the future. At the Clinton Laborato-
ries, scientists continued wartime in-
vestigations into the effects of radi-
ation on animals and undertook re-
covery of uranium from wastes held
in storage solutions, but also began
two new programs: the production of
radioactive isotopes, and the design
and development of a heterogeneous
pile using enriched uranium. At the
Metallurgical Laboratory, while oper-
ating under an interim organization,
scientists kept busy supporting the
Hanford project, but also were able
to give some time to such programs
as the development of a breeder reac-
tor for producing nuclear fuel.^
ic Panel, sub: Proposals for R & D in the Field ol
Atomic Energy, 2 vols., 28 Sep 45, HB Files, Fldr
113, MDR; Ltr, Compton to Secy Comm Henry A.
Wallace, sub: Policy Re A-Energy, 27 Sep 45,
Admin Files, Gen Corresp, 312.1 (A-Energy), and
Ltr, Bradbury to Groves, 23 Nov 45, Admin Files,
Gen Corresp, 600.12 (Projs and Prgms), MDR. On
the production and release of radioactive isotopes
for scientific research see the materials in Admin
Files, Gen Corresp, 441.2 (Isotopes), MDR.
'The term breeder reactor was broadly applied to
any nuclear chain reactor in which fertile material
(U-238, for example) could be converted into more
fissionable material than it consumed. Looking to
the future use of atomic energy as a source of
power for producing electricity and propelling naval
vessels, nuclear scientists could perceive the value of
developing a means for steadily increasing the
stockpile of fissionable material. Fhe breeder would
maximize utilization of fertile, nonfissionable mate-
rial by converting it into nuclear fuel that could be
used for the production of power. For a detailed ex-
planation of the breeder reactor see Glasstone,
Sourcebook on Atomic Energy, pp. 572-74, pars., 15.44-
15.52.
Of all the project's research and de-
velopment centers, the Radiation Lab-
oratory succeeded best in switching
from wartime activities to fundamen-
tal scientific research. It had been a
well-established research center
before the war (since 1935) and could
again take up suspended tasks (such
as completing the 184-inch cyclotron,
stopped in 1941) and new projects
(such as building a synchroton, an ap-
paratus for imparting charged parti-
cles with, higher speeds than were
possible in the cyclotron). Ernest
Lawrence, continuing as director of
the laboratory, even managed to per-
suade a reluctant General Groves to
approve use of some government
funds to carry on these scientific con-
struction projects.®
As the Army was curtailing project
operations and winding up its re-
search and development programs,
the process of postwar demobilization
became a serious threat to its effec-
tive administration of the program
during the interim period. In an
effort to maintain present efficiency,
the district engineer in October 1945
requested all organizations in the
project to make a study of their an-
ticipated personnel problems and to
submit plans for making the necessary
adjustments. In the next eight or nine
months, he noted, many military per-
sonnel would become eligible for re-
lease. Some in this category could
continue in a civilian capacity in their
present assignments, while others
'This paragraph and the preceding one based on
Hewlett and Anderson, \eu> World, pp. 627-28. The
Metallurgical Laboratory operated under an interim
organization because Arthur Compton had left to
become chancellor of Washington University in St.
Louis, Missouri.
584
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
would become available for reassign-
ment to other installations. Planning
well in advance of these inevitably
disrupting shifts of personnel, the dis-
trict engineer advised, was the only
way to prevent a serious decline in
the efficiency of project operations. ^°
Personnel attrition was especially
heavy among Manhattan's commis-
sioned officers. During the war, the
military officer complement was com-
prised almost exclusively of noncareer
reservists; at the war's end, most were
eligible for immediate discharge. For
replacements. Groves decided he
would need about fifty regular offi-
cers. Under ordinary circumstances, a
request for this number could readily
be filled, but the Manhattan com-
mander advanced special require-
ments that complicated the requisi-
tion. He specifically stipulated that
only the most highly qualified officers
meeting very strict selection standards
be assigned to Manhattan as replace-
ments, for officers of lesser capabili-
ties could not work successfully with
scientists and would not be able to
acquire the technical knowledge
needed to perform effectively on the
project.
The replacements were needed
quickly, and because there was Httle
time for extensive investigation into
their qualifications, Groves turned to
graduates of the United States Mili-
tary Academy as the most likely
source of candidates. This poHcy soon
brought protests from the War De-
partment General Staff, which could
see no reason why the Manhattan
Project should have first choice of the
best-qualified officers in the Army.
General Groves sought the support
of the new Chief of Staff, General
Eisenhower, for this selection pohcy,
but the latter sided with the General
Staff. Groves then turned to Secretary
of War Patterson, who finally resolved
the matter in his favor. The Manhat-
tan commander, Patterson directed,
was "to have as many officers as he
decided he needs and of the quality
he thinks he needs, and I want him to
have complete freedom of choice." "
During the Army's postwar steward-
ship, the number of commissioned of-
ficers fell from a September 1945
peak of more than 700 to a December
1946 low of 250. But the decline was
generally proportionate to the overall
reduction in employment on the
project during the transition period
(thus, contractor employment fell
from eighty thousand to a little over
forty thousand in the same months).
Similarly, enlisted personnel declined
from over five thousand to somewhat
more than two thousand. While there
was the anticipated turnover in officer
personnel characteristic of any period
of demobilization after a war, a sur-
prisingly large percentage of the war-
time officers in key positions stayed
on until at least the latter part of
1946, and many of those who did
•"MD Cir Ltr, sub: Org Adjustments, 27 Oct 45,
Admin Files, MD Directives, Ser. 46, Control, MDR.
"As quoted in Groves, Now It Can Be Told, p.
376. A good example of the quality of regular offi-
cers Groves was able to secure was Col. Frederick J.
Clarke, an engineer officer, who, in early 1946, re-
placed Colonel Matthias as area engineer at Han-
ford. Clarke, a graduate of the United States Mili-
tary Academy, held important assignments in the
Army Service Forces during the war, and before
completing his career in the Army, he served as the
engineer commissioner for the District of Columbia
(1960-63) and as the Engineers chief (1969-73).
See Corps of Engineers, Engineer Memoirs: Interviews
With Lieutenant General Frederick J. Clarke (Washing-
ton, D.C.: OCE Historical Division, 1979), pp. v and
93-106.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1945-1947
585
i|H|
■■■■■■■■■jjjHHI
^^^^BIH^H
^^^^H
^I^^^^^^^^^^^^^^V ^ I^^^^^^^^B
^^^Hki^ ^^^^1
'^•TA-Cjl^^^
Pli^jl^^l
jj^^HHHuHJBB^B^P
Secretary of War Robert P. Patterson {left) meeting with General Groves on
postwar problems
resign continued with the atomic
project in a civilian capacity. ^^
Serious losses of personnel also oc-
curred among operational and re-
search employees, including most of
the nonmilitary scientists and techni-
cians. From a total often thousand in
September 1945, this group declined
to under three thousand by December
1946. Other contract employees —
chiefly those operating the produc-
tion facilities and maintaining services
at Clinton and Hanford — also fell in
numbers, but at a somewhat slower
'^MDH, Bk. 1. Vol. 8, "Personnel." Apps. Al
(Chan, Manhattan Proj Contractor Emplovment,
Aug 42-Dec 46) and A13 (Chart, MD Mil Personnel,
Aug 42-Dec 46), DASA; Org Charts, L.S. Engrs
Office, MD, 10 Nov 44 and 6 Nov 46, Admin Files,
Gen Corresp, 020 (MED-Org), MDR.
rate. In the same period, the decline
at Clinton was from about forty-five
thousand to twenty-five thousand and
at Hanford from ten thousand to less
than five thousand. At the New
Mexico site, the always small operat-
ing work force remained at a constant
level of fifteen hundred to two thou-
sand during late 1945 and most of
1946, then rose rapidly in November
and December to over five thousand
as the Sandia Base built up its
personnel. ^^
Destruction of Japanese Cyclotrons
Illustrative of the serious break-
down in the operating efficiency of
'^MDH, Bk. 1, Vol. 8, App. Al, DASA.
586
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
the Army in the first hectic months of
its postwar trusteeship was the unfor-
tunate decision to destroy the Japa-
nese cyclotrons.^"* With the war over,
the process of demobilization began
to diminish the ranks of the project's
key personnel. Despite concerted ef-
forts to procure only highly compe-
tent men, the experienced were re-
placed in some instances by the inex-
perienced. This was the case at
Groves's personal headquarters in
Washington, where the staff officer
who prepared the directive to destroy
the cyclotrons was, in Groves's opin-
ion, not sufficiently familiar with the
project's operating procedures.
Manhattan's discovery of the Japa-
nese cyclotrons in the weeks immedi-
ately following the Hiroshima and Na-
gasaki bombings was significant, for it
confirmed the wartime judgment of
project scientists that, in the area of
atomic energy, Japan had not pro-
gressed beyond the stage of laborato-
ry research. The country had too few
'*This account of the destruction of the Japanese
cyclotrons is based on the following sources: Corre-
spondence and related items in HB Files, Fldrs 7
and 70, MDR; Correspondence, including MacAr-
thur's denial of responsibility for destruction of the
cyclotrons and Secretary of War Patterson's accept-
ance of that responsibility, in Admin Files, Gen Cor-
resp, 413.6 (Destruction of Japanese Cyclotrons),
MDR; Ltrs, Dean Acheson (for Secy State) to Sir
Frederic W. Eggleston (Australian Minister to U.S.),
10 Dec 45, and Col R. L. Vittrup (for Secy War) to
State Dept, Attn: Japan-Korea Economic Division,
sub: Request for Info on Cyclotrons in Japan, 29
Dec 45, in U.S. Department of State, The Bnlish Com-
monwealth [and] The Far East, Foreign Relations of
the United States, Diplomatic Papers, 1945, Vol. 6
(Washington, D.C.: Government Printing Office,
1969), pp. 1011 and 1014-15; MDH, Bk. 1, Vol. 14,
"Intelligence & Security," pp. 5.1-5.4; Groves, S'ow
It Can Be Told, pp. 187 and 367-72; Douglas MacAr-
thur. Reminiscences (New York: McGraw-Hill Book
Co., 1964), pp. 286-87; Compton, Atomic Quest, p.
24; Yoshio Nishina, "A Japanese Scientist Describes
the Destruction of His Cyclotrons," Bulletin of the
Atomic Scieritists 3 (Jun 47): 145 and 167.
scientists trained in nuclear physics
and lacked both the sources of ura-
nium and the necessary industrial
capacity to produce fissionable
materials for development of atomic
weapons.
A project survey team had found
cyclotrons at three of the major scien-
tific research institutions in Japan:
two at the Institute for Physical and
Chemical Research in Tokyo, two at
the Osaka Imperial University, and
one at the Kyoto Imperial University.
After Japan's surrender, scientists at
these institutions requested permis-
sion from the headquarters of Gener-
al MacArthur, recently appointed Su-
preme Commander for the Allied
Powers (SCAP), Japan, to resume op-
erations of these cyclotrons for vari-
ous research projects. SCAP authori-
ties promptly granted a permit for
operation of those at the Institute for
Physical and Chemical Research, al-
though they subsequently limited
their employment to investigations in
biology and medicine.
Meantime, in early September, the
War Department General Staff had
issued instructions directing destruc-
tion of all enemy war equipment,
except that which was to be saved for
examination because of its new or
unique character. The instructions
clearly stated that "equipment not es-
sentially or exclusively for war which
is suitable for peacetime civilian uses
should be retained." ^^ On 30 Octo-
ber, the Joint Chiefs of Staff expand-
ed these instructions, directing com-
manders in the Pacific area and China
to seize any facilities for research in
^*As quoted in Groves, Noiv It Can Be Told, p.
368.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1945-1947
587
atomic energy and related fields and
to take into custody any individuals
engaged in nuclear research.
When a copy of the 30 October di-
rective reached General Groves, he
called in an officer from his head-
quarters staff and went over its con-
tents with him, with the objective of
making certain that the five Japanese
cyclotrons were brought under con-
trol. The Manhattan commander did
not specify precisely how they were to
be secured. The staff officer, inter-
preting his instructions from Groves
to be that he was to take steps to
have the cyclotrons destroyed, on
7 November prepared a message to
General MacArthur ordering that this
be done as soon as they were no
longer needed by Allied scientific
teams to obtain technical and experi-
mental data. Because the message was
to go out under the Secretary of
War's name, Groves's office cleared it
through John W. Martyn, Patterson's
administrative assistant, who, viewing
it as concerned only with a routine
matter, did not specifically call it to
the Secretary's attention. ^^
On 24 November, SCAP headquar-
ters reported to the Joint Chiefs of
Staff that it had started destruction of
the cyclotrons, which it had seized on
the twentieth, citing as authority only
the 30 October directive. Although
^^General Groves notes in his memoirs (see ibid.,
p. 369) that the stafT officer who oversaw prepara-
tion of the message had only recently been assigned
to the atomic project. He thinks that if the officer
had been more familiar with the project's operating
procedures, he would have questioned Groves's ap-
parent desire to have the cyclotrons destroyed. The
destruction order thus would have been brought to
Groves's personal attention, and he would have had
it remanded. The draft cable message is attached to
Memo, Maj Amos E. Britt (for Groves) to Martyn,
sub: Destruction of Cyclotrons in Japan, 7 Nov 45,
HB Files, Fldr 7, MDR.
copies of the report went to the of-
fices of nine different officials, includ-
ing that of General Groves, apparent-
ly no one in authority actually saw it.
In retrospect, Groves attributed the
failure of policymaking officers in
Washington to question the destruc-
tion on the widespread inexperience
prevalent in subordinate staffs as a
result of the postwar readjustment.^'
SCAP headquarters first got an in-
kling that there was some confusion
in policy within the War Department
on the matter of the Japanese cyclo-
trons when it received a request on
28 November to send one of the cy-
clotrons to the United States for
study. General MacArthur personally
informed General Eisenhower of the
conflicting instructions, but received
no reply to his cable.
Meanwhile, the story of the destruc-
tion of the cyclotrons had come out
in the American press. A dispatch
from Tokyo carrying a date line of
24 November attributed the action to
orders from General MacArthur.
However, another story on 29 No-
vember, quoting sources in MacAr-
thur's headquarters, stated that the
decision was not made by SCAP, but
by a "higher authority" in Washing-
ton. The occupation government had
reluctantly carried out these
instructions.^^
Faced with inquiries from the press,
the War Department cabled MacAr-
thur's headquarters that it had never
sent the instructions to destroy the
cyclotrons. The department conced-
ed, however, that its failure to com-
ment on MacArthur's message of
'^ Groves. Xow It Can Be Told, p. 369.
'KWew York Times. 24 and 29 Nov 43.
588
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
24 November had contributed to the
misunderstanding. MacArthur repHed
that the special instructions had come
from the Secretary of War, pointing
out that he had personally informed
Eisenhower of their apparently con-
flicting nature but had never received
a reply. MacArthur felt he had to
answer the untrue charges, which
continued to appear in the press, that
the occupation government had made
the decision to destroy the cyclotrons.
The War Department immediately
sent him assurances that he had acted
correctly and the misunderstanding
had occurred entirely because officials
in Washington had not coordinated
outgoing messages.
Having thus accepted full responsi-
bility for mismangement of the
matter, the War Department had next
to seek some way to allay the continu-
ing widespread criticism in the press.
Patterson and Groves finally agreed
upon release of a frankly worded
statement to the press, signed by the
Secretary, accepting full responsibility
for the unfortunate incident:
General MacArthur was directed to de-
stroy the Japanese cyclotrons in a radio
message sent to him in my name. The
message was dispatched without my
having seen it and without its having
been given the thorough consideration
which the subject deserved. Among other
things, the opinion of our scientific advis-
ers should have been obtained before a
decision was arrived at.
While the officer who originated it felt
that the action was in accord with our es-
tablished policy of destroying Japan's war
potential, the dispatch of such a message
without first investigating the matter fully
was a mistake. I regret this hasty action
on the part of the War Department. ^^
The press, apparently not expecting
such an open admission of error on
the part of the War Department, soon
lost interest in the matter of the Japa-
nese cyclotrons. Unfortunately, how-
ever, the incident would provide addi-
tional fuel for the more vociferous
critics of the department's atomic
policies in the immediate postwar
period.
Reorganization and New Commitments
Faced with a continuing attrition in
personnel, the need to prepare pro-
grams for fiscal year (FY) 1947, and
other urgent administrative problems,
the Army decided in early 1946 to
abandon the "hold-the line" policy and
make long-range commitments neces-
sary to keep the project a viable and
efficient operation. For example.
Groves advised Bradbury at Los
Alamos that "it has . . . become nec-
essary for me to make definite plans,
despite the fact that this will commit
to some extent at least any future
control body." Similarly, in a pre-
pared brief for Groves, General Nich-
ols warned that the Manhattan Project
must begin making some firm com-
mitments to avoid dissolution of its
many research programs. Hence, a
first order of business under the new
policy was to make certain changes in
the administrative organization of the
project, to facilitate planning and to
oversee the day-to-day operations. ^°
i«WD Press Release, 15 Dec 45, HB Files, Fldr 7,
MDR.
^'' Quolaiions from Ltr, Groves to Bradbury, 4 Jan
46, Admin Files, Gen Corresp, 600.12 (Atomic),
MDR. Memo, Nichols to Groves, 2 Feb 46, OCG
Files, Gen Corresp, MP Files, Fldr 20, Tab U, MDR.
Nichols's promotion to the temporary rank of briga-
dier general became effective on 22 Jan 46 but was
terminated on 30 Jun 46.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1945-1947
589
The hold-the-line policy had occa-
sioned very few changes in the inter-
nal administrative organization of the
postwar Manhattan Project up until
1946. The relationship, too, with the
War Department had continued more
or less on the same basis as during
the war, with Groves having a good
deal of autonomy in his administra-
tion and having access to the depart-
ment through the Chief of Staff and,
when necessary, to the Secretary of
War himself. The War Department, in
consultation with Groves and Bush,
had replaced the Military Policy Com-
mittee with a Military Advisory Board,
comprised of three Army and three
Navy officers responsible for coordi-
nating activities of the War and Navy
Departments with those of the Man-
hattan District. At the same time, the
War Department had established an
ad hoc reviewing committee to indoc-
trinate selected officers in the organi-
zation and work of the Manhattan
Project and to submit recommenda-
tions for development of appropriate
relationships between the project and
the War Department. Groves served
as a member of this last-named com-
mittee, which had met a number of
times in late 1945.^^
The wartime ad hoc reviewing com-
mittees and the Military Policy Com-
mittee had provided invaluable plan-
ning assistance to Manhattan, but
project leaders soon realized that the
^' Memo, Brig Gen William A. Borden (New De-
velopments Div Dir, W'DSS) to Gen Thomas T.
Handy (Dep Chief of Staff), sub: Integration of WD
Requirements With Manhattan Proj Opns, 4 Oct 45;
Memo, Borden to Chief of Staff, same subject, 12
Oct 45, Memo, Brig Gen H. J. Hodes (Asst Dep
Chief of Staff, GSC) to Lt Gen J. E. Hull (Asst Chief
of Staff, OPD. WDGS) et al., sub: Ad Hoc Commit-
tee, 20 Oct 45. All in Admin Files, Gen Corresp,
334 (Committees and Mil Advisory Board), MDR.
new Military Advisory Board, with
only military members, was hardly
suitable for the task of preparing a
viable atomic program for FY 1947.
To correct this deficiency, General
Nichols in late January secured
Groves's approval for establishment
of an Advisory Committee on Re-
search and Development. He enlisted
the aid of Richard Tolman and Ernest
Lawrence, who soon formed a group
consisting of Robert F. Bacher,
Arthur H. Compton, Warren K.
Lewis, John R. Ruhoff, Charles A.
Thomas, John A. Wheeler, and
Tolman himself. ^^
The new committee met for the
first time in early March at the Man-
hattan Project office in Washington,
joined by General Nichols and repre-
sentatives of organizations wanting to
secure sponsorship of programs. The
committee proffered various research
and development proposals, noting
especially the need for expanding the
number of agencies performing re-
search in atomic energy. It recom-
mended continued subsidization of
the University of California program
and emphasized that university lab-
oratories should devote their efforts
primarily to unclassified research but,
where necessary, should also carry
out classified research, with the basic
objective of adding to scientific
knowledge. For fundamental research
requiring equipment too costly to be
purchased by most university or pri-
vate laboratories, the committee fa-
vored the establishment of national
laboratories. Finally, it supported the
"Memo, Nichols to Groves, 22 Jan 46, Admin
Files. Gen Corresp, 334 (Advisory Committee on R
& D), MDR: Hewlett and Anderson, S'eu< World, p.
633.
590
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
development of high-temperature and
fast-fission piles, as well as other reac-
tor projects related to commercial as-
pects of atomic energy, at govern-
ment-operated facilities, such as the
Clinton Engineer Works and Argonne
and Metallurgical laboratories.^^
The Manhattan District's strong en-
dorsement of the committee's recom-
mendations is evident from the con-
siderable amount of funding allotted
for research and development in the
FY 1947 budget. The committee had
proposed expenditures from $20 to
$40 million, but the District's budget
provided more than $72 million, di-
vided between construction (68 per-
cent) and operating expenses (32 per-
cent). While the largest amounts went
to the project's laboratories at Ar-
gonne and Clinton, substantial funds
were earmarked for programs at a
number of universities. In July 1946,
Congress voted the necessary funds
to finance the research and develop-
ment budget. ^"^
Of the various proposals. Groves
devoted his greatest effort to estab-
lishment of the national laboratories.
The committee had suggested one
laboratory in each major region of the
country. Universities and other re-
search organizations in the region
would provide a board of directors to
recommend research projects and
prepare the annual budget. The com-
mittee proposed that the first of these
laboratories should be the Argonne
Laboratory at C>hicago and another
located somewhere in the northeast.
The University of Chicago in mid-
April 1946 agreed to operate the
soon to be established Argonne Na-
tional Laboratory (1 July), which
would be formed from the existing
Metallurgical and Argonne laborato-
ries, and representatives of twenty-
four participating institutions in June
submitted data pertinent to the policy
to be followed in its organization and
operation. The Manhattan District
then announced that it would negoti-
ate a formal contract with the Univer-
sity of Chicago. While the participat-
ing institutions secured security clear-
ances for their scientists, what was left
of the Metallurgical Project staff at
Argonne initiated the research pro-
gram for the new laboratory. Much of
this program, of necessity, consisted
of continuing projects already in
progress at the old Argonne Labora-
tory, including design of a breeder re-
actor and investigation of graphite ex-
pansion in the piles at Hanford.^^
In July 1946, nine universities in
the northeastern part of the L^nited
States — Columbia, Cornell, Harvard,
Johns Hopkins, Massachusetts Insti-
tute of Technology, Pennsylvania,
Princeton, Rochester, and Yale —
banded together as the Associated
LIniversities, Inc., to support a nation-
al laboratory in that region. Groves
announced that this laboratory would
be located at the site of the Army's
Camp Upton on Long Island, but dis-
agreement among the universities as
to the extent that the government
^^ (k-ncral Nichols rcporlcd to General Groves on
whal the Advisorv (.oniinittee had proposed in
Memo, Nichols to Groves. 14 Mar 46, Admin Files,
(ien Gorresp, 3.S4 (AcKisorx Committee on R & I)).
MDR
^^ Hewkti and Anderson. Xrw Umld. p. 6:55.
^^ For a detailed account of the establishment of
the Argonne National Laboratory see MI^H, Bk. 1,
\ol. 4, "Auxiliaiy Activities." pp. 2.5-2.20, DASA.
For correspondence and other documents pertinent
to its organization see .Admin Files, (ien Gorresp,
080 (Argonne-Univ of Chicago) and 600.913
(Rpts-Fire and Accidents), MDR.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1945-1947
591
should control research activities at
the new institution, designated the
Brookhaven National Laboratory, de-
layed a start in its program until early
1947.26
The committee also had recom-
mended national laboratories else-
where in the country, especially on
the West Coast. But the heads of a
group of universities in southern Cali-
fornia did not take affirmative action
on information forwarded to them by
the District in November until the
end of the year. Their proposal there-
fore became a matter for later deci-
sion by the new Atomic Energy
Commission. 2'^
A national laboratory in the south-
eastern region was unnecessary, be-
cause an organization had evolved at
Clinton that, by early 1946, was serv-
ing a purpose similar to that of the
other national laboratories. The Mon-
santo Chemical Company, the prime
contractor for the Clinton Laborato-
ries, had invited the University of
Tennessee at Knoxville to conduct
graduate courses for its employees as
a means of securing and holding the
technically trained personnel it
needed for its operations. Expanding
upon this plan, the University of Ten-
nessee convened a meeting of repre-
sentatives of other southeastern uni-
versities. Out of this conference came
an agreement that personnel from
these institutions could participate in
the graduate training at Clinton and,
in addition, make use of the research
facilities there. During 1946, District
officials and representatives of the
various universities involved took
steps to formalize the relationship. In
October, the associated institutions
received a charter from the state of
Tennessee as the Oak Ridge Institute
of Nuclear Studies, and in the last
months of the year, they were pro-
ceeding with negotiations for a con-
tract with the Manhattan District. ^^
In addition to providing for the
continuation and expansion of the
project's research and development
programs. Groves and his staff had to
keep production operations function-
ing smoothly and efficiently. From an
administrative standpoint, one of the
first postwar problems they had to
deal with was extending major operat-
ing contracts. Most of these contracts
had been scheduled to terminate six
months after the cessation of actual
hostilities, but shortly thereafter Man-
hattan had secured supplemental
agreements to fix the expiration date
as 30 June 1946, with options for
government renewal for one year. In
March, Groves obtained approval
from the Secretary of War to exercise
these options and to negotiate the
necessary contract extensions to 30
June 1947. He informed the Secretary
that funds for this purpose were al-
ready available, but that additional
appropriations would be necessary to
prevent a cessation of production and
research operations at some time
before mid- 1947. He also notified the
Secretary that one major contractor,
the Du Pont Company, had indicated
an unwillingness to continue and
would have to be replaced. ^^
26 MDH, Bk. 1, Vol. 4, pp. 2.20-2.38, DASA.
2^ Memo, Nichols to Groves, 14 Mar 46, MDR;
MDH, Bk. 1, Vol. 4, pp. 2.38-2.39, DASA.
28 MDH, Bk. 1, Vol. 4, pp. 10.1-10.12, DASA.
29 Memo, Groves to Secy War, 1 1 Mar 46, Admin
Files, Gen Corresp, 008 (WD), MDR.
592
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Subsequent efforts by Patterson
and Groves to persuade Du Pont to
continue at the Hanford Engineer
Works failed. Groves then negotiated
a contract with the General Electric
Company, similar in most respects to
Du Pout's. The major exception was
General Electric's insistence that a
provision be placed in the contract
that would permit the company to be
relieved of its obligation in the event
that the atomic energy legislation en-
acted by Congress imposed condi-
tions not acceptable to the firm. The
new contract provided for the oper-
ation of Hanford, construction of
certain new facilities there, and for
construction and operation of a gov-
ernment-owned laboratory at the
Knolls, some five miles distant from
the company's home plant at Sche-
nectady, New York. This laboratory,
which was separate from the new
Brookhaven National Laboratory,
would provide the company with fa-
cilities for pursuing its interest in the
development of atomic power. ^°
The Hanford production facilities
turned over to General Electric had
major operational problems. The
most serious was the expansion of the
graphite moderators in the three pro-
duction piles, the result of heavy neu-
tron bombardment (the so-called
Wigner Effect). Du Font's plant man-
ager had called this phenomenon to
the attention of the district engineer
in February 1946, pointing out that
there was visible bowing of the tubes
containing the uranium slugs and pre-
^° Ltr, C. E. Wilson (Gen Electric president) to
(iroves, 28 May 46; Memo, Groves to Secy War,
sub: Change of Opn and Management Contractor at
HEW. 31 May 46; Ltr, Nichols to Lilienthal. 4 Nov
46. All in Admm Files, Gen Corresp, 161 (Electric),
MDR.
dieting that, because no effective way
had been discovered to combat this
development, the operating life of the
piles certainly was limited. Groves
and Nichols had followed Du Pout's
suggestion to shut down one pile to
ensure that, should the other two
become inoperative, one would be
available to maintain the essential
production of polonium (used as a
neutron source in atomic bombs),
which could not be stored because of
its short half-life. When General Elec-
tric took over, two piles were in oper-
ation and the oldest unit, the B Pile,
was on standby.^ ^
Deficiencies in the Hanford separa-
tion process were not as serious as
those in the pile operation, and Du
Pont, with assistance from the Metal-
lurgical Project scientists, had made
more progress in finding a solution
for them. The drawback of the bis-
muth phosphate method was that,
after extraction of the plutonium, it
left the residue of uranium in a state
from which it could not be readily re-
covered. Consequently, much valua-
ble uranium suspended in the process
solution was drained off to be stored
unused in huge underground tanks.
Chemists at the Metallurgical Labora-
tory had developed another separa-
tion process that promised not only
to be a more efficient method of re-
moving the plutonium from the pro-
cess solution but also to leave the fis-
sion products and uranium in more
easily recoverable states. In August
1946, after engineering and cost stud-
ies had demonstrated the feasibility of
3 1 Ltr, R. M. Evans (HEW Opns Mgr, Du Pont) to
Nichols, 20 Feb 46, Admin Files, Gen Coresp. 410.2
(Metals), MDR; MDH, Bk. 4, Vol. 6, "Operations,"
pp. 4.19-4.20, DASA.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1945-1947
593
this process, Du Pont had begun de-
velopment of a demonstration unit
and pilot plant, with the goal of even-
tually testing the process in a
semiworks.^^
The K-25 and K-27 production
units at Clinton were operating more
successfully than anyone had antici-
pated. Plant engineers therefore con-
cluded that the two diffusion units by
themselves might achieve as high a
concentration of U-235 as the Beta
tracks of the electromagnetic plant. In
May 1946, the Carbide and Carbon
Chemicals Corporation made careful
studies to ensure that there was no
danger of the concentration level
reaching a critical mass in the diffu-
sion plant and that the corrosive ef-
fects of the feed material, uranium
hexaflouride, were not soon going to
destroy the operating surfaces of the
process equipment. The Manhattan
District then authorized Carbide and
Carbon to raise product concentra-
tion on an experimental basis, with
the objective of obtaining perform-
ance data that could be used to justify
ultimately shutting down the relative-
ly inefficient and hard-to-maintain
Beta tracks of the electromagnetic
process. ^^
By way of contrast to Clinton and
Hanford, where none of the operating
problems seriously interfered with
continued production of fissionable
^^ The so-called redox solvent extraction process
was based on the principle of alternating between
the plutonium oxidation state and higher states to
separate plutonium from uranium and then remov-
ing the fission products with other organic solvents,
such as hexone. See MDH. Bk. 4, \'ol. 6. pp. 4.24-
4.26, DASA; Hewlett and Anderson, Xezi' World, p.
630.
33 MDH, Bk. 2, Vol. 5, "Operations," pp. 4.1-
4.12 and 8.1-8.4. DASA; Hewlett and Anderson,
Xeiv World, pp. 629-30.
materials, deteriorating conditions at
Los Alamos during 1946 threatened
to halt the continued stockpiling of
atomic weapons.^* Poor morale was a
major factor, caused by an uncertain
future for the laboratory, a lack of
even the basic amenities of a peace-
time community, and an intolerance
of the military and security aspects of
community life.
Groves, determined to improve
morale, directed that such measures
as were necessary to keep Los Alamos
active to meet the defense require-
ments of the country were to be taken
as quickly as possible. "The transition
from war to peacetime community
conditions will start immediately," he
told Bradbury. He outlined a pro-
gram for community development
that became the blueprint for major
improvements in the utilities, includ-
ing a million-gallon steel storage tank
to ensure an adequate supply of water
at all times; for constructing three
hundred permanent housing units;
and for increasing recreational facili-
ties to make life at the isolated site
less irksome. ^^
While the community development
program was being implemented.
General Nichols worked on another
program to improve and expedite
stockpiling operations at Los Alamos.
Concerned about the slow rate of
weapons development, Nichols pro-
posed to turn over to outside contrac-
tors full responsibility for fabrication
of most bomb components, making
3* Except as otherwise indicated, section on Los
Alamos in 1946 based on MDH, Bk. 8, Vol. 2,
Supp., passim, DASA; Gro\es, Xow It Can Be Told.
pp., 381-85.
35 Ltr, Groves to Bradbury, 4 Jan 46. MDR; Hew-
lett and Anderson, Xew World, pp. 630-31.
594
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Los Alamos responsible for only the
development of new types of bombs.
The district engineer also recom-
mended creation of a special technical
military unit in the Manhattan District
to do the final assembly work on
bombs. ^^
One activity diverting many senior
staff members at Los Alamos from
weapons development was Operation
Crossroads, the test of atomic
bombs against naval vessels scheduled
to take place in the early summer of
1946 at Bikini Atoll. After devoting
many months to assembling and test-
ing the weapons components, prepar-
ing a technical handbook, and fur-
nishing much additional technical
data, laboratory staff members were
detailed to the Bikini site to help pre-
pare for and to observe the two tests
undertaken — Test Able, 30 June, the
explosion of a bomb over a group of
ships at a considerable altitude; and
Test Baker, 25 July, detonation of a
bomb under water. During the tests
Col. Stafford L. Warren of the Dis-
trict's Medical Section supervised spe-
cial radiation teams who — under the
guidance of officers and men trained
at the Clinton Laboratories, the Uni-
versities of Chicago and Rochester,
the Philadelphia Navy Yard, and Los
Alamos — carried out a variety of radi-
ological safety procedures with radi-
ation-detecting instruments.^^
^^ Memo, Nichols to Groves, 22 Mar 46, Admin
Files, Gen Corresp, 410.2 (Melals), MDR.
" Groves, \ow It Can Be Told. pp. 384-85; MDH,
Bk. 8, Vol. 2, Supp.. pp. 1. 13-1. 17, and Vol. 3,
"Auxiliary Activities," Ch. 8, DASA; Radiology in
World War II. pp. 901-15. The Bikini tests were car-
ried out under the overall direction ot the Navy, al-
though the District had technical responsibility for
them.
In the meantime, John H. Manley, a
long-time and influential scientist on
the laboratory staff, indicated to
Groves and Nichols his support of the
plan to relieve Los Alamos of most of
the activities relating to actual weap-
ons production. Manley objected to
what he felt was a growing interfer-
ence of the military with the program
at Los Alamos. This, he thought,
could be eliminated by turning over
to a special military unit the produc-
tion, stockpiling, and protection of
atomic bombs, leaving to the civilian
staff only bomb development. Groves
had already organized a special Army
battalion at Sandia Base to assume
responsibility for surveillance, field
tests, and weapons assembly. He also
had worked out an agreement with
Monsanto for development and fabri-
cation of weapons components in a
plant at Dayton, Ohio. Furthermore,
he had started preliminary planning
for the shift of uranium purification
and its reduction to metal to Clinton
and of similar operations on plutoni-
um to Hanford. Thus, the way was
almost clear for the scientists at Los
Alamos to devote their full efforts to
the design and development of new
weapons.^®
While attending to problems asso-
ciated with postwar project oper-
ations, the Army inevitably became
involved in a good many other admin-
istrative problems, some routine in
nature. Illustrative of this type of ac-
tivity was the settlement of various
contractors' war claims against the
project. Typical was a suit brought in
earlv 1946 bv Clifton Products, Inc., a
38 MDH, Bk. 4, \()1. 6, p. 4.25, and Bk. 8, Vol. 2,
Supp., pp. VI1,6-VII.7 and App. 9, DASA; Hewlett
and Anderson, Xew World, pp. 632-33.
THE ARMY AND IHE AIOMIC ENERGY PROGRAM, 1945-1947
595
metal processing firm, for losses of
about $18,000 it tlaimcd to have in-
curred in construction and operation
of a beryllium plant. The company, in
filing its claim with the Appeal Board
of the Office of Contract Settlement,
stated that the Manhattan District was
one of several wartime agencies that
had encouraged it to undertake pro-
duction of beryllium. The Manhattan
District informed the Judge Advocate
General attorneys preparing the gov-
ernment's defense that the War Pro-
duction Board, not Manhattan, had
taken the initiative in persuading Clif-
ton to build beryllium production fa-
cilities that were primarily for the
benefit of other branches of the
Army. The Appeal Board, neverthe-
less, decided in favor of Clifton. Con-
sequently, in August 1946, the Dis-
trict's Madison Square Area Engi-
neers Ofiice had to negotiate a final
financial settlement with the firm,
agreeing upon payment of some
$5,000 "for losses sustained." ^^
Disposition of surplus property was
another routine activity that absorbed
a good deal of time. Property disposal
was a matter of considerable interest
to the general public and therefore
also to members of Congress. Typical
of the problems that arose were those
relating to the priority rights of veter-
ans in the purchase of surplus gov-
ernment property. For example, Col.
Elmer E. Kirkpatrick, Jr., now serving
as deputy district engineer, had to
assure Senator Edwin C. Johnson of
^^ On the claim filed by Clifton Products see
Memos, Capt John 1.. Davies, Jr. (Mad Sq Area
Engrs Office) to Nichols, 9 Jan 46, and Lt Col
Cooper B. Rhodes (Mad Sq Area Engrs Office) to
Cjroves and Nichols, 28 Aug 46, and also Ltr
(source of quotation). Groves to Appeal Board, 30
Aug 46, Aclmin Files, Gen Corresp, 156 (Clifton
Products), MDR.
Colorado that in the sale of Manhat-
tan District materials and equipment
at Grand Junction, where the project
had secured uranium from vanadium
tailings, "veterans are being given all
possible consideration under the laws
and regulations governing the sale of
war contractor inventories. . . ." In
another instance, Groves himself had
to assure the two senators from Ten-
nessee, Kenneth D. McKellar and
Tom Stewart, that Roane-Anderson's
sale of surplus property at Clinton
would take into account the special
rights of veterans. Complaints from
constituents claimed that the firm had
been disposing of property to the
highest bidder without reference to
veterans' rights. Groves pointed out
that this disposition procedure was
legal and had been done in the inter-
est of expediting reduction of inven-
tories as quickly as possible, but as-
sured them that, in the future, every
effort would be made to observe vet-
erans' rights. *°
A crucially important function that
devolved upon the Army was the
technical information program for in-
dividuals and groups with a need-to-
know about the new source of energy
and its military and industrial applica-
tions. The secret circumstances under
*° Quotation from Ltr, Kirkpatrick to Johnson, 1
Mar 46, Admin Files, Gen Corresp, 400.7 (Disposi-
tion of Equip), MDR. See also Telgs, Knoxville Post
No. 2, American Legion, Dcpt. of Tenn., to McKel-
lar and Stewart, 5 Aug 46, Incls in Ltrs, McKellar
and Stewart to Groves, 9 Aug 46; Ltr, Groves to
McKellar and Stewart, 14 Aug 46. All in Admin
Files, Gen Corresp, 400.703, MDR. See memo rout-
ing slip attached to the 14 August letter for addi-
tional comments by Groves, who wrote that the Dis-
trict's procedure on the sale of surplus property had
provided some justification for the complaints and
that corrective action would now be taken to ensure
full observation of veteians' rights.
596
MANHATTAN. THE ARMY AND THE ATOMIC BOMB
which atomic energy had developed,
combined with its relative newness as
a major field of scientific knowledge,
placed upon a comparatively small
group of military and technical ex-
perts the formidable task of educating
and indoctrinating a vast number of
military men, government officials, in-
dustrial engineers, business execu-
tives, scientists and technicians, medi-
cal personnel, and a great many other
people. Groves was often called upon
to brief the Secretary of War, Chief of
Staff, and other officials in the mili-
tary services, and to speak before
conferences of military officers. Fre-
quently, too, he and many project
members were called to testify before
the committees of Congress consider-
ing domestic legislative proposals and
to assist those government officials
charged with shaping postwar policies
for the international control of atomic
energy. "^^
The Final Act: Transfer to
Civilian Control
With the President's signing of the
Atomic Energy Act on 1 August 1946,
the United States Atomic Energy
Commission was created as the civil-
ian successor agency for the Army.
This commission, to consist of five
full-time presidential appointees.
*' On the military application of atomic energy
see OCG Files, Gen Corresp. MP Files, Fldr 1, Tabs
A-D, MDR, especially Tab D for Memo, Groves to
Chief of Staff, sub: New Wpns Development, 12 Feb
46, and OCG Files, Gen Corresp, Groves Files, Fldr
8, MDR, for Talk, Groves to Mil Conf (Fort Belvoir,
Va.) Attendees, sub: Hist of Manhattan Proj, 23 Sep
46. On the indoctrination of engineers see Groves,
Now It Can Be Told, pp. 387-88. One of those who
took the training offered at Oak Ridge was Capt.
Hyman G. Rickover, who subsequently was assigned
to direct the Navy's program for development of the
atomic submarine.
would oversee the domestic atomic
energy program by assuming respon-
sibility for most of the activities of the
Manhattan District, including the pro-
duction, ownership, and use of all fis-
sionable materials in the United
States; for sponsorship of the exten-
sive research and development pro-
gram in government laboratories, uni-
versities, and elsewhere; for control
and release of restricted scientific in-
formation; for enforcement of securi-
ty and safety; and for mihtary applica-
tion of atomic power.
Yet enactment of this long-awaited
legislation did not immediately relieve
the Army of its stewardship of the do-
mestic program. The contributing fac-
tors were many. The President expe-
rienced extended delays in securing
the individuals he wanted to serve as
commissioners, whose names he did
not announce until the end of Octo-
ber. Once appointed, the new com-
mission requested General Groves to
delay the official act of transfer until
1 January 1947. In retrospect, the
Manhattan commander remembers
the period from August through De-
cember 1946 as one of the most diffi-
cult of his entire time as head of the
project, because "everyone knew that
I was in a caretaker's position, and
they had no assurance that my views
would be those of the Commission.
After the commissioners were finally
appointed, it was quite evident that
my views would not be accepted with-
out a long-drawn-out delay." *^
42 Groves, Now It Can Be Told, p. 395. Except as
otherwise indicated, section on the transfer of the
atomic energy program from the Manhattan Project
to the Atomic Energy Commission based on Memo,
Aurand to Secy War, sub: Mtg With Groves, 5 Jul
46, 471.6 (Atomic Bomb); Memo, Groves to Secy
Continued
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1945-1947
597
During this difFicuit period, there
was little the War Department and
the Manhattan District could ac-
complish beyond making plans for
transferring project control until the
President appointed the new commis-
sioners. Secretary Patterson, in par-
ticular, was anxious to have the trans-
fer go smoothly and took steps to
provide for continued Army liaison
with the commission. At his request,
General Groves and Maj. Gen. Henry
S. Aurand, the General Staffs direc-
tor of research and development, dis-
cussed tentative measures for dealing
with the problems that would arise
when the military personnel assigned
to the Manhattan District would have
to be absorbed by the Army. From
their discussions evolved the proposal
to set up within the War Department
an atomic energy committee, com-
prised at least in part of those Army
officers who would also be assigned
to the commission's Military Liaison
Committee.
The President announced the five
members of the Atomic Energy Com-
mission on 28 October. To the post
of chairman, he named David E. Lil-
ienthal who, as head of the Tennessee
Valley Authority, had gained consid-
erable knowledge of project activities
War, sub: Mil Liaison Committee, AEC, 17 Jul 45,
352.13; Ltr. Secy War to Groves, 15 Sep 46, 319.2
(Misc); DF, Maj Gen Lauris Norstad (Plans and
Opns Dir, WDGS), sub: WD Atomic Energy Com-
mittee, 19 Sep 46, 334 (Mil Liaison Committee);
Memo, Groves to Secy War, sub: WD Atomic
Energy Committee, 18 Sep 46, 334 (Atomic Com-
mittee on AE); Memo, Groves to Chief of Staff, sub:
Turnover to AEC, 31 Dec 46, 352.13; Ltr, Groves to
Lilienthal, 20 Dec 46, 201 (Lilienthal, D. E.); Memo,
Brereton to Groves, sub: Comments on Proposed
Memo to Secv War, 26 Dec 46 (Org-AFSWP); Draft
Ltr, Groves to Lilienthal. 28 Dec 46, 319.2 (Misc).
All in Admin Files, Gen Corresp, MDR. Hewlett and
Anderson, Xew World, pp. 620-24 and 634-55.
at Clinton and had served as a
member of the State Department
panel on international control of
atomic energy. For the other four po-
sitions, the President selected Robert
F. Bacher, a Cornell physicist who
had played a leading role at Los
Alamos; Sumner T. Pike, editor of the
Des Moines Register and Tribune and a
Pulitzer Prize winner; William W.
Waymack, a former member of the
Securities and Exchange Commission;
and Lewis L. Strauss, a Navy reservist
who had served during the war in the
Bureau of Ordnance and as an assist-
ant to the Secretary of the Navy.
While awaiting official announce-
ment of his appointment, Lilienthal
had formed a temporary administra-
tive staff comprised of individuals that
had worked together with him on
atomic energy matters. He selected
Herbert S. Marks, director (acting) of
the War Production Board's Power
Division before becoming Dean Ach-
eson's assistant at the State Depart-
ment; Joseph Volpe, Jr., a former
military officer on the legal staff in
General Groves's Washington head-
quarters; and Carroll L. Wilson, a
wartime assistant to Vannevar Bush at
the Office of Scientific Research and
Development. Myriad housekeeping
arrangements for the new commission
required the immediate attention of
Marks, Volpe, and Wilson, who
worked out most of the details with
Lt. Col. Charles Vanden Bulck, chief
of the District's Administrative Divi-
sion. Pressed by the commissioners'
impending arrival in early November,
Vanden Bulck expedited all requests
from the stafi' for funds, for office
space in the New War Department
Building, which was adjacent to
598
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Groves's headquarters, and for cleri-
cal support.
In early November, after winding
up personal affairs and relocating to
Washington, the commissioners col-
lectively channeled their energies and
talents to prepare for the transfer of
the atomic program from military to
civilian control. As a first measure,
they directed their staff to arrange
briefings and inspection tours of the
District's various installations. Lilien-
thal, joined by Bacher and Pike, vis-
ited District headquarters at Oak
Ridge on the fourth. Nine days later,
accompanied by Marks, Volpe, and
Wilson, all five commissioners under-
took a tour of the major atomic reser-
vations and research facilities. By the
time they returned to Washington on
the twentieth, they were considerably
more familiar with the character and
problems of the Manhattan Project
and were ready to proceed with carry-
ing out the formal transfer.
Meanwhile, the Army had moved
ahead with steps to facilitate the
transfer. From a list of candidates
prepared largely by the Manhattan
commander, the Secretaries of War
and the Navy had selected three
members for the commission's Mili-
tary Liaison Committee — Air Force
Lt. Gen. Lewis H. Brereton, as chair-
man; Rear Adm. Thorvald A. Sol-
berg, who had participated in the Op-
eration Crossroads tests; and Rear
Adm. William S. Parsons, who had
seen long service on the atomic
project's Los Alamos technical staff —
that would administer any military
functions transferred from the Man-
hattan District.*^ Groves, who had
designated Nichols to function as his
point of liaison with the commission,
also attempted to secure the appoint-
ment of the district engineer to fill
the commission post of director of
the Division of Military Application.
But the commissioners expressed a
desire for a clean break with the past
military administration of the project.
Moreover, because they disagreed
with Nichols's view that the division
should function as a "line" rather
than a "staff' organization, as well as
with his strong advocacy of military
custody of atomic weapons, they re-
quested the Secretary of War to
submit other nominees for the posi-
tion. Their rejection of Nichols was
evidence of an enduring suspicion
that the Army was still trying to retain
a dominant influence in the field.
This mistrust, a legacy of the pro-
longed legislative fight over the issue
of military versus civilian control, ex-
acerbated what might otherwise have
been essentially a formality.*^
Consistent with provisions of the
Atomic Energy Act, the commission
in early December informed General
Groves that it planned to take over
full responsibility for the atomic
project as of I January 1947. As of
that date, the Manhattan District was,
without exception, to transfer all
*^ Subsequently, both Generals Groves and Nich-
ols served as Army members of the Military Liaison
Committee— Groves from 2 Feb 47 to 29 Feb 48
and Nichols from 29 Feb 48 to 1 Feb 51.
■** On Nichols's rejection as nominee for the posi-
tion of director of the Division of Military Applica-
tion see Nichols, Comments on Draft Hist "Manhat-
tan," Incl to Ltr, Nichols to Chief of Mil Hist, 25
Mar 74, CMH, and Hewlett and Anderson, New
World, p. 653. On the issue of custody of weapons
see Hewlett and Duncan, Atomic Shield, p. 585. This
issue remained in dispute until September 1952,
when an agreement was reached that the military
would control the greater share of the stockpile of
atomic weapons.
THE ARMY AND THE ATOMIC ENERGY PROGRAM, 1945-1947
599
property and functions of the project
to the commission, which subsequent-
ly would retransfer such property and
functions deemed more appropriate
for armed services control. Groves
and Nichols promptly and firmly ob-
jected to this proposed procedure.
Their reasons were straightforward:
Certain properties — for example, all
ordnance works (except the heavy
water facilities), Sandia Base at Albu-
querque, and weapons storage sites —
should not be transferred even tem-
porarily; the raw materials function
should remain under Army control
until the commission became a
member of the Combined Develop-
ment Trust; and intelligence oper-
ations and records should be
transferred directly to the new Cen-
tral Intelligence Group, not via the
commission.
In spite of Groves and Nichols's
objections, the commission indicated
that it intended to adhere strictly to
the concept of transfer and retransfer.
Regardless of this resolute stance,
Nichols met with the commission on
several occasions in mid-December
and sought — but without success — to
secure a modification of its posi-
tion, fighting particularly hard for
military custody of atomic weapons.
On the last-named issue, Nichols
seems to have achieved some measure
of success, for at the end of the
month the commission informed the
Secretary of War that, while it was not
willing to give up its basic insistence
on a simple, all-inclusive transfer, it
would consider some concessions. As
its concessions, the commission
agreed to accept only nominal trans-
fer of properties relating to weapons,
ordnance parts, and fissionable mate-
rials; to consider arrangements for re-
transfer of these properties to Army
control not later than 1 March 1947;
and to resolve the question of mem-
bership in the Combined Develop-
ment Trust. On the issue of intelli-
gence, it refused to take action until it
had more information.
The last days of December were
unbelievably hectic for the commis-
sion, which participated in a series of
hurried conferences at the State and
War Departments in an attempt to
clear the way for agreement on the
unresolved aspects of the raw materi-
als and intelligence issues. At the
State Department, it worked out an
arrangement that involved eventual
disbandment of the Combined Policy
Committee (its continued existence
appeared to be in serious conflict
with provisions of the Atomic Energy
Act) and membership in the Com-
bined Development Trust, provided
that Congress was informed of this
hitherto secret wartime agency. At the
War Department on the thirtieth, Lil-
ienthal briefed the Secretary of War
on the commission's arrangement
with the State Department. Patterson
was satisfied and thereupon agreed to
transfer the Army's raw materials
function. After discussing the remain-
ing points in dispute on intelligence,
Lilienthal determined the Secretary's
position was immutable. Pressed by
the 1 January deadline, the commis-
sion chairman resorted to a compro-
mise. He agreed that the function
temporarily should remain with the
Army, provided that the commisson's
staff was given an opportunity to ex-
amine all the records.
The last formal procedure in the
transfer occurred at the White House
on the afternoon of 31 December.
600
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Transfer of Control to the Atomic Energy Commission. Seated, left to nght:
Carroll L. Wilson, President Harry S. Truman, David E. Lilienthal. Standing, left to right. ■
Sumner T. Pike, Colonel Nichols, Secretary of War Patterson, General Groves, Lewis L.
Strauss, William W. Way mack.
Four of the five commissioners
(Bacher was inventorying weapons at
Los Alamos) and Carroll Wilson, re-
cently appointed general manager of
the commission, joined with Patter-
son, Groves, and Nichols in President
Truman's office to witness the final
act: the signing of the executive order
that legally ended the Army's stew-
ardship of the atomic energy program
and turned over peacetime control
and development of the atom to a
commission of five men.*^
''^ Ihc Manhattan 1'
end with the signing
translcr ol the atoini
Kncigy C-onimission, .»
irict was not ahohshcd
o)c-(l officially
>l the exccutix
ame to an
order and
program to the Atomic
loiigh the Manhattan Dis-
niil 15 Aug 47 (see MDH,
For a period of sixteen months fol-
lowing the end of the war, the Army
had carried out the often perplexing
and thankless task of administering.
Bk. 1, Vol. 1, "General," p. F2, DASA). Karly m
1947, the Secretaries of War and the Navy estab-
lished the Armed Forces Special Weapons Project
(AFSWP), effective 31 Dec 46, to assume all of the
functions of the Manhattan Project that had not
been transferred to the commission. Organized as a
joint agency in anticipation of the unification of the
military services, the AFSWP was responsible for
their participation in the development of atomic
energv for military purposes. On the establishment
of the AFSWP see Groves, Xow It Can Be Told. pp.
398-400; Hewlett and Duncan, Atomic Stiield. pp.
131-32; and Draft WD Cir, sub: AFSWP, 7 Feb 47,
and Ltr. Col J. W. Brown (Secv, Gen Slafl) to
(iroves, sub: Appointment of Groves as AFSWP
Chief, 28 Feb 47, both in Admin Files, (Jen Cor-
resp, 322 (Org-AFSWP), MDR.
THE ARMY AND THE AIOMIC ENERGY PROGRAM, 1945-1947
601
on an interim basis, an atomic organi-
zation undergoing the severe stresses
and strains of transition from a war to
a peacetime status. Compounding the
problems of what was inherently a
difficult assignment was the wide-
spread disagreement among the
American people as to precisely what
kind of organization was best suited
to develop and control in peacetime
so significant a new source of energy.
By mid- 1946, many Americans were
disappointed and disillusioned be-
cause the "golden atomic age,"
widely predicted when news of the
wartime atomic energy program was
first made public, had failed to mate-
rialize, and the tendency was to blame
the Army for this. Yet, as General
Groves pointed out in retrospect, the
Army had accomplished during its
trusteeship what was perhaps most es-
sential to the long-range future of
atomic energy in the United States. It
had preserved and turned over to its
new civilian administrators "a good
organization — one ranked among the
top industrial organizations of the
country — and [achieved] the orderly
demobilization of its forces to fit into
the organization of the Atomic
Energy Commission." *^
*^ Quotation from Statement by General Groves
on dissolution of Manhattan Engr Dist, 14 Aug 47,
MDR.
EPILOGUE
An Atomic Legacy
The advent of the atomic age — and
its concomitant legacy of not only
great benefits but also great risks —
emanated from the Manhattan
Project. In the history of technologi-
cal development in the Western
world, America's atomic energy pro-
gram constituted a unique episode:
Through an integrated synergy of sci-
ence, industry, and the military, the
men of Manhattan created a revolu-
tionary new device, the atomic bomb,
unleashing for the first time the
power within the atom.
Ever intrigued by the phenomenon
of the atom, particularly its vast stores
of energy, men in past centuries had
frequently endeavored to discover
means to release this power. These
efforts consistently failed, however,
and the potential of the atom re-
mained a matter of theory, a hypothe-
sis graphically realized only in the
imaginative world of science fiction.
Ongoing research by a small group of
European physicists in the early years
of the twentieth century finally culmi-
nated in the late 1930's with Hahn
and Strassmann's demonstration of
the feasibility of fissioning the atom,
the key to tapping its enormous
energy. But repressive political and
ideological conditions abroad occa-
sioned many of these physicists to
forego their scientific investigations
and to seek refuge in America. There,
World War II provided them the op-
portunity to apply their research — to
transform atomic theory into a mate-
rial reality — as they collaborated with
American scientists, engineers, and
industrialists imder the direction of
the United States Army on the project
to produce the world's first atomic
weapon.
During the course of this unprece-
dented undertaking, the Army had a
significant role in orchestrating
almost every aspect of atomic devel-
opment— from the design, construc-
tion, and operation of large-scale pro-
duction plants to strategic planning
for the employment of the atomic
bomb. Until 1942, its participation in
the atomic energy research carried on
largely by the refugee and American
scientists at various government and
university laboratories under the aus-
pices of the Office of Scientific Re-
search and Development and its pred-
ecessors was sporadic and peripheral.
Yet the scientific leaders of the OSRD
program, having full cognizance of
the military potentialities of atomic
energy, had anticipated that the
Army, or an equivalent agency, even-
tually would have to assume a leading
AN ATOMIC LEGACY
603
part in its development. The juxtapo-
sition of a number of factors in the
winter of 1941-42, including the
sudden entrance of the United States
into World War II, the prevailing
belief that the Germans were moving
ahead with their own atomic investi-
gations, and the rapid approach of
the American program to the pilot
plant stage, convinced them that this
time had come. Hence, in early 1942,
they advised the President to take the
measures necessary to bring the Army
into the program on a major scale.
As a first step. Army Chief of Staff
General George C. Marshall selected
Brig. Gen. Wilhelm D. Styer of the
Services of Supply to establish liaison
between the Army and the atomic
program. General Styer, working with
the OSRD leaders, particularly Van-
nevar Bush and James B. Conant,
drew up plans for bringing the Army
more fully into the program. Approv-
al of these plans in June 1942 by the
Top Policy Group — the President,
Vice President, the Secretary of War,
Marshall, Bush, and Conant — marked
the start of the Army's managerial
role in the most revolutionary enter-
prise of its time.^
The program approved in June
turned over to the Army three impor-
tant tasks: design, construction and
operation of plants to produce fis-
sionable materials; organization of a
special laboratory to design, manufac-
ture, and test atomic weapons; and
responsibility for security for the
entire project. Under the provisions
of the program the Army was to work
in close coordination with the OSRD,
which would continue to administer
' Ltr, Bush to President, 17 Jim 42,
Files, Fldr 6, MDR.
iid Iiicl, HB
the research and development as-
pects, and to use the funds and the
facilities of its Corps of Engineers in
carrying out its new assignment.
To discharge these tasks, the Army
selected Col. James C. Marshall, an
engineer officer with broad construc-
tion experience and a reputation for
high professional competence, as
manager of the atomic energy pro-
gram. During the summer of 1942,
Marshall, drawing chiefly upon Corps
personnel, facilities, and practices for
administering large-scale construction
projects, laid the groundwork for the
Army's . atomic infrastructure. He
formed a new engineer district, with
headquarters temporarily in New
York City, and appropriately named it
the Manhattan District. But by Sep-
tember, the project's mihtary and ci-
vilian leaders had come to realize that
development of an atomic weapon
was going to require an enterprise of
far greater scope and complexity than
they earlier had anticipated. Conse-
quently, they agreed to the appoint-
ment of an Army officer who would
be assigned overall responsibility for
not only the District but also all other
aspects of the wartime atomic pro-
gram. To fill this key position, the
Army designated Col. Leslie R.
Groves, a career engineer officer who,
while serving in the Corps' Construc-
tion Branch, had consistently demon-
strated an exceptional ability to com-
plete difficult large-scale construction
projects. At the same time, the
project leaders also created a Military
Policy Committee, comprised of
Bush, Conant, Styer, and Rear Adm.
William R. Purnell, representing the
Navy, to broadly control and oversee
604
MANHATTAN. THE ARMY AND THE ATOMIC BOMB
the Army's management of the
program.
The assignment of Groves had an
immediate and significant influence
on the subsequent development of
the atomic energy program. As a pro-
fessional manager, Groves, newly pro-
moted to brigadier general, was ener-
getic, hard-working, and aggressive to
a fault, single-minded yet adaptable
when flexibility was necessary, and
well equipped both by education and
experience to oversee and direct a
highly technical and complex con-
struction project under the often diffi-
cult conditions existing in wartime.
Skillfully using his dual position as, in
effect, the executive secretary of the
Military Policy Committee and chief
administrative officer of what came to
be known as the Manhattan Project,
Groves quickly established dominant
control over the rapidly expanding
program. In late 1942 and early 1943,
making maximum use of the authority
granted from the War Department to
use existing facilities of the Corps of
Engineers (such as the Real Estate
Branch), of other branches of the
Army (such as the Medical Corps and
Military Intelligence Division), of
other government agencies (such as
the United States Employment Serv-
ice and Tennessee Valley Authority),
Groves succeeded — despite severe
shortages and competition from other
wartime programs — in securing the
priorities, land, materials, tools, man-
power, and other requirements essen-
tial to the Manhattan Project's contin-
ued development. The Manhattan
commander's adoption and imple-
mentation of this management prac-
tice of securing, whenever feasible,
assistance from other military and ci-
vilian agencies made it possible for
him to organize and direct effectively
the multifarious activities of the
project, aided only by a headquarters
staff that was extremely small by war-
time standards.
Contributing also to Groves's suc-
cess as the top manager of the
Manhattan Project was the skill and
dedication of his team of middle man-
agers— including District Engineer
Marshall and, following the relocation
of the Manhattan District headquar-
ters to Oak Ridge, his replacement,
Col. Kenneth D. Nichols; Lt. Col.
Franklin T. Matthias, in charge of
the Hanford Area Engineers Office;
and the four key scientific directors:
J. Robert Oppenheimer of the Los
Alamos Laboratory, Arthur Compton
of the Metallurgical Project, Ernest
Lawrence of the Radiation Laborato-
ry, and Harold Urey of the SAM Lab-
oratories. Faced with the vast scope
and complexity of the atomic pro-
gram, the task of each project manag-
er was to keep the diverse activities of
his installation focused on Manhat-
tan's primary goal: production of an
atomic weapon. Working in close co-
ordination with Groves in Washing-
ton, each manager established specific
project objectives, organized oper-
ational functions, measured perform-
ance and compliance with schedules,
and motivated and developed person-
nel resources to administer the far-
flung research, construction, and pro-
duction aspects of an enterprise
which, at its height of activity, em-
ployed a work force of nearly
129,000.
A relatively small proportion of this
work force, some thirty-six hundred
military and civilian personnel as-
signed directly to Manhattan or its
AN AIOMIC LEGACY
605
university contractors, comprised the
project's administrative core element.
Members of this group found them-
selves with responsibilities for carry-
ing out a great variety of activities.
Many assignments were quite similar
to those they had experienced as em-
ployees of the Corps of Engineers or
other government agencies. These in-
cluded monitoring the negotiations
and implementation of contracts and
subcontracts; expediting procurement
of materials and manpower; assisting
in site selection and acquisition; en-
forcing security, health, and safety
regulations; and overseeing the con-
struction and administration of the
atomic communities in Tennessee,
New Mexico, and Washington State.
Other assignments, however, were
new and unlike anything hitherto un-
dertaken by uniformed or civilian em-
ployees of the Army. These included
overseeing the worldwide search and
exploration for deposits of uranium,
thorium, nickel, and other vital raw
materials required by the project;
working as scientists and technicians
in research laboratories; serving as
diplomatic agents in treaty negotia-
tions with foreign governments; and
making significant contributions to
planning for the peacetime control
and use of atomic energy at home
and abroad.
Participation in the atomic energy
program was by no means limited to
personnel assigned only to the Man-
hattan District or the Corps of
Engineers. Many of the Army's key
officials, staff components, and subor-
dinate elements became involved in
the program and contributed to its ul-
timate success. For example, the Sec-
retary of War himself assisted in
maintaining essential liaison between
the Manhattan Project and the Presi-
dent and Congress and played an im-
portant role in planning for the tacti-
cal employment of the bomb and the
postwar control of atomic energy.
The staff of the Under Secretary of
War proved indispensable to Manhat-
tan in solving numerous manpower
procurement and labor problems.
The Ordnance Department made
available existing munitions plants
that facilitated development of heavy
water production works. The Signal
Corps installed vital communications
systems that ensured adequate co-
ordination of complex activities at the
widely separated and isolated in-
stallations. Military Police and Mili-
tary Intelligence units performed key
security functions. The Medical Corps
furnished the personnel for the health
and medical facilities. And when the
atomic bombs were ready for combat
employment, the Army Air Forces
provided the B-29 aircraft and crews
for delivering them on enemy targets.
There are few who would question
that the development of atomic
energy and atomic bombs under the
Army's direction was one of man-
kind's greatest technical and military
achievements — one that the Army
shares, of course, with American sci-
ence and American industry. The na-
tion's political leaders in the early
months of America's participation in
World War II had concluded that the
Army was the organization best
suited, and perhaps the only one able,
to undertake the responsibility for ad-
ministering a program of the magni-
tude and difficulty of the Manhattan
Project. The events of the summer of
1945 proved the soundness of their
choice, for the Army carried out its
606
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
unenviable mission with success that
certainly matched its achievements on
the battlefields of World War II. Gen-
eral Groves succinctly summarized
the breadth and significance of this
accomplishment in his farewell mes-
sage to the men of Manhattan:
Five years ago, the idea of Atomic
Power was only a dream. You have made
that dream a reality. You have seized
upon the most nebulous of ideas and
translated them into actualities. You have
built cities where none were known
before. You have constructed industrial
plants of a magnitude and to a precision
heretofore deemed impossible. You built
the weapon which ended the War and
thereby saved countless American lives.
With regard to peacetime applications,
you have raised the curtain on vistas of a
new world. ^
Undeniably, in the history of tech-
nology, the Manhattan Project stands
as a spectacularly successful venture,
having demonstrated to the world the
kind of technical miracles possible
when, through skillfully applied man-
agement techniques, the resources of
science and industry are brought to
bear single-mindedly on the resolution
of extremely complex technological
problems. But there are those who
have suggested that the Army's partici-
pation in the project was not necessary
at all — that science alone, with civilian
industry's help, would have been able
to build the fissionable materials pro-
duction plants and to perfect the
bomb. Some have even indicated that
the Army's entry into the atomic pro-
gram brought a bureaucratization,
perhaps most dramatically exempli-
fied in the policy of compartmentali-
^ Quotation from Groves's farewell message to
Manhattan Proj, 23 Dec 46, Admin Files, Gen Cor-
resp, 316, MDR.
zation, that unnecessarily restricted
and slowed the development of the
bomb. These Army policies left an
aftermath of resentment and suspi-
cion, which found expression after
the war in a long and bitter contro-
versy over enactment of legislation
for peacetime control of atomic
energy. And the American public's ul-
timate solution was to give a civilian
agency, the United States Atomic
Energy Commission, the dominant
control over the new source of
energy.
In compliance with the people's
mandate — a decision that represented
probably not so much a criticism of
the Army's role in the Manhattan
Project, as it did a continuing adher-
ence to the traditional American
belief in subordinating the role of the
military in peacetime — the Army on
31 December 1946 passed on to the
Atomic Energy Commission primary
responsibility for the future develop-
ment and control of atomic energy.
And even as the Army completed its
final act, some of the correlative ben-
efits and risks of the atomic legacy
that it had done so much to create
were already discernible. Hiroshima
and Nagasaki had revealed the power,
and the horror, of an atomic bomb-
ing, forecasting the urgent need for
an international alliance to control
nuclear weapons that, if left uncon-
trolled, threatened the existence of
civilized society. But the fissioning
process that had made possible the
release of the enormous energy
within the atom also gave promise of
providing vast amounts of heat for
generating electricity and useful ra-
dioactive isotopes for industrial and
medical application. In the years
AN ATOMIC LEGACY 607
ahead, while having a lesser role in Forces Special Weapons Project, the
atomic matters as a member of the Army — as an integral institution of
commission's Military Liaison Com- American society — would continue to
mittee and, subsequently, the Armed share in the atomic legacy.
Appendix — Einstein's Letter
Albert Einstein
Old Grove Rd.
Nassau Point
Peconic, Long Island
August 2d, 1939
F. D. Roosevelt
President of the United States
White House
Washington, D.C.
Sir:
Some recent work by E. Fermi and L. Szilard, which has been communicat-
ed to me in manuscript, leads me to expect that the element uranium may be
turned into a new and important source of energy in the immediate future.
Certain aspects of the situation which has arisen seem to call for watchfulness
and, if necessary, quick action on the part of the Administration. I believe
therefore that it is my duty to bring to your attention the following facts and
recommendations.
In the course of the last four months it has been made probable — through
the work of Joliot in France as well as Fermi and Szilard in America — that it
may become possible to set up a nuclear chain reaction in a large mass of ura-
nium, by which vast amounts of power and large quantities of new radium-like
elements would be generated. Now it appears almost certain that this could be
achieved in the immediate future.
This new phenomenon would also lead to the construction of bombs, and
it is conceivable — though much less certain — that extremely powerful bombs
of a new type may thus be constructed. A single bomb of this type, carried by
boat and exploded in a port, might very well destroy the whole port together
with some of the surrounding territory. However, such bombs might very well
prove to be too heavy for transportation by air.
The United States has only very poor ores of uranium in moderate quanti-
ties. There is some good ore in Canada and the former Czechoslovakia, while
the most important source of uranium is the Belgian Congo.
In view of this situation you may think it desirable to have some perma-
nent contact maintained between the Administration and the group of physi-
cists working on chain reactions in America. One possible way of achieving
610 MANHATTAN: THE ARMY AND THE ATOMIC BOMB
this might be for you to entrust with this task a person who has your confi-
dence who could perhaps serve in an unofficial capacity. His task might com-
prise the following:
a) to approach Government Departments, keep them informed of the fur-
ther development, and put forward recommendations for Government action,
giving particular attention to the problems of securing a supply of uranium
ore for the United States.
b) to speed up the experimental work, which is at present being carried on
within the limits of the budgets of University laboratories, by providing funds,
if such fimds be required, through his contacts with private persons who are
willing to make contributions for this cause, and perhaps also by obtaining the
co-operation of industrial laboratories which have the necessary equipment.
I understand that Germany has actually stopped the sale of uranium from
the Czechoslovakian mines which she has taken over. That she should have
taken such early action might perhaps be understood on the ground that the
son of the German Under-Secretary of State, von Weizaecker, is attached to
the Kaiser-Wilhelm-Institut in Berlin where some of the American work on
uranium is now being repeated.
Yours very truly, ^
(signed) A. Einstein
* Original of letter and inclosures filed in FDR.
Bibliographical Note
Unpublished Sources
Archival Collections
Manhattan: The Army and the Atomic
Bomb is based primarily, although not
exclusively, upon the archival records
created by the Manhattan Project
from 1942 to 1948. Physical control
of the bulk of these records is divided
between two federal agencies — the
National Archives and Records Serv-
ice (NARS) and the Department of
Energy (DOE). A useful guide to
records in the custody of NARS is its
Inventory of the Records of the Manhattan
Engineer District, 1942-1948 (Washing-
ton, D.C., November 1956). As yet,
DOE has not published a similar
guide for its records, but each of its
records centers maintains a catalog of
its holdings. All footnote citations in-
clude sufficient data for locating Man-
hattan Project archival records in
their respective depositories, indicat-
ed by a final two-, three-, or four-
letter abbreviation that is fully identi-
fied in the Guide to Archival Collec-
tions. For reasons of brevity, in each
chapter only the initial citation of a
document gives the full reference
data (MPC Rpt, 15 Dec 42, OCG
Files, Gen Corresp, MP Files, Fldr 25,
Tab B, MDR); subsequent citations
arc shortened references that contain
the essential identifying elements, fol-
lowed by the appropriate depository
code (MPC Rpt, 15 Dec 42, MDR).
The Manhattan District records at
NARS fall into several major catego-
ries, of which three are of particular
interest. Relating primarily to high-
level policymaking matters are the
records of General Groves's Manhat-
tan Project headquarters in Washing-
ton, D.C., designated the Office of
the Commanding General Files; and
those of Secretary Stimson's office,
designated the Harrison-Bundy Files
(for George Harrison and Harvey
Bundy, Stimson's principal assistants).
Relating primarily to the Army's prac-
tices and problems as administrator
of the Manhattan Project are the Gen-
eral Administrative Files.
The Office of the Commanding
General Files are comprised of letters,
memorandums, directives, diaries, re-
ports, and similar materials that con-
cern a variety of topics — including or-
ganization, research, production,
stockpiling, weapon testing, domestic
and international control, security,
and foreign personnel. Of special
value is the diary of Col. (later Brig.
Gen.) James C. Marshall, the first dis-
trict engineer, which records in detail
the early months (June-October
1942) of the Army's administration of
the atomic bomb project, and the
612
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
aide-memoire notebook of Groves,
which covers the activities of the com-
manding general from May 1943 to
May 1945. This file group, however,
does not include the similarly useful
office diary (1942-46) of Groves,
which is retired in NARS Record
Group 200.
The Harrison-Bundy Files contain
the letters, memorandums, and cables
on atomic energy that were ex-
changed between the Secretary of
War, his assistants, the Under Secre-
tary of War, the Chief of Staff, vari-
ous scientists, and appropriate repre-
sentatives of the British and Canadian
governments. In addition to corre-
spondence, the files include minutes
of the meetings of the Military Policy
Committee, the Combined Policy
Committee, and the Interim Commit-
tee; a documentary diplomatic history
of the Manhattan Project prepared at
the direction of General Groves; and
various drafts of bills for domestic
control of atomic energy drawn up by
War Department personnel, copies of
speeches, press releases, and reports
to Congress.
The General Administrative Files
consist primarily of correspondence
between the District's military and ci-
vilian personnel and the project's sci-
entists and engineers, as well as be-
tween individuals in the War Depart-
ment and the various field offices of
the District. In addition, these files
contain copies of the District's circu-
lar letters, memorandums, and bulle-
tins, touching upon such matters as
audits, civilian and military personnel,
contracts and claims, costs, finance,
insurance, labor relations, organiza-
tion, equipment, safety, transporta-
tion, priorities, and property.
Other categories of Manhattan Dis-
trict records at NARS pertain to a
number of disparate project activities.
The Investigation Files include corre-
spondence, memorandums, and pro-
ceedings related to personnel security
and criminal investigations. The
Fiscal and Audit Files contain useful
information concerning operating
costs at specific installations and data
compiled for budget planning. The
Foreign Intelligence Files are com-
prised of letters, messages, and re-
ports of the District intelligence of-
fices established in early 1944 in
London, Paris, and Frankfurt.
Besides the formal collection of
Manhattan District records, NARS
also has other extensive materials per-
tinent to the wartime atomic bomb
project, including Ofiice of Scientific
Research and Development (OSRD),
congressional, and Department of
State records. Those from OSRD are
essential for the history of the project
before the Army's entrance into it in
1942 and for the views of scientists,
especially Vannevar Bush and James
B. Conant, on such subjects as post-
war planning for control of atomic
energy. The hearings on enactment of
postwar legislation by the Senate Spe-
cial Committee on Atomic Energy in
1945-46, as well as other congres-
sional records, include considerable
historical information concerning de-
velopment of the wartime project.
State Department records contain im-
portant data on American policy relat-
ing to postwar international control
measures.
At the time of the writing of this
volume, most of the day-to-day ad-
ministrative, construction, and oper-
ational records of the Manhattan
BIBLIOGRAPHICAL NOTE
613
Project (such as contracts, construc-
tion completion reports, security and
personnel records, and periodic re-
ports on research and development
programs, plant operations, and com-
munity fimctions) were located in the
DOE^ facility at Germantown, Mary-
land, and in the several DOP^ or con-
tractor-operated records centers at
DOE field installations. Most of these
records, however, will eventually be
retired to the appropriate regional
depositories in the NARS system.
By far the largest and most impor-
tant collection of DOBL records was in
the Oak Ridge Operations Office. It
contained not only the central mail
and records files of the Manhattan
District headquarters but also those
of a number of other important sub-
ordinate elements of the project (for
example, the Washington Liaison
Office and the District's area offices
in New York City). Here also were the
records on the design, construction,
and operation of the electromagnetic,
gaseous diffusion, and thermal diffu-
sion plants, as well as the plutonium
semiworks, and on the planning,
building, and administration of the
Oak Ridge community. Of special
value were the construction comple-
tion reports of Stone and Webster,
M. W. Kellogg and Kellex, Du Pont,
and other major contractors, and the
diary (1943-46) of Col. E. H. Marsden,
executive officer in the district engi-
neer's office.
Records in the Hanford Operations
Office documented the story of the
plutonium production plant. Du Pont,
the major contractor, produced volu-
minous historical reports on site de-
velopment and plant and community
construction and operations. The area
engineer, Col. Franklin I. Matthias,
recorded the Army's role at Hanford
in a detailed diary (1943-46).
The bulk of the source materials on
scientific and technological develop-
ments in the atomic bomb program
were in DOE's major contractor-oper-
ated research centers. These include
the Argonne National Laboratory at
Lemont, Illinois, which has the files of
the Metallurgical Project; the Law-
rence Radiation Laboratory at Berke-
ley, California; and the Los Alamos
Scientific Laboratory at Los Alamos,
New Mexico. The records of the SAM
Laboratories at Columbia University
were in the Oak Ridge Operations
Office.
Persona! Papers
In the years since the end of World
War II, the personal papers of many
of the statesmen, military leaders, and
scientists who played important roles
in development of the atomic bomb
have become available for historical
research. Papers of Franklin D.
Roosevelt and Harry L. Hopkins are
in the Roosevelt Library at Hyde
Park, New York, as well as some of
those of Vannevar Bush pertaining to
the atomic project. Harry S. Truman's
papers are in the Truman Library at
Independence, Missouri. Those of
Henry L. Stimson, including the in-
dispensable personal diary (1939-45),
are in Yale University's Sterling Me-
morial Library in New Haven, Con-
necticut. Most of General Groves's
personal papers are in the National
Archives, as are those also of Lyman
J. Briggs, director of the National
Bureau of Standards (1932-46). The
Manuscript Division of the Library of
Congress has the J. Robert Oppen-
614
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
heimer papers and a substantial por-
tion of those of Bush. Papers of
Enrico Fermi and some of those of
James Franck, the British scientist, are
in the University of Chicago Library
and those of Ernest O. Lawrence are
in the Bancroft Library, University of
Cahfornia at Berkeley. The volumi-
nous diaries of William Lyon Macken-
zie King, the Canadian political
leader, are in NARS and contain
many entries concerning wartime
atomic energy development.
Manuscript Histories
There are several manuscript his-
tories that cover all or important as-
pects of the atomic bomb project.
The most extensive and comprehen-
sive is the Armed Forces Special
Weapons Project's "Manhattan Dis-
trict History," prepared at the direc-
tion of General Groves and under the
general editorship of Gavin Hadden,
a longtime civil employee of the
Corps of Engineers. Conceived as the
official history of the Army's role in
the project, it consists of historical
narratives prepared by each of the
programs and activities of the Man-
hattan Project in accordance with a
general plan of organization and list
of topics to be treated. Many of the
narratives are amply supplemented
with appropriate supporting docu-
ments, bibliographies, charts, statisti-
cal tables, engineering drawings,
maps, and photographs. The "Histo-
ry" is arranged in some thirty-six vol-
umes grouped in eight books, with
detailed general indices to names of
persons, agencies, and subjects.
Copies of the "History" are located in
NARS and in DOE's Germantown fa-
cility. In 1962, the Los Alamos Scien-
tific Laboratory published an unclassi-
fied version of a major portion of that
part of the "History" that covered its
activities from 1943 to 1947 {Manhat-
tan District History: Project Y, The Los
Alamos Project, LAMS-2532, 2 vols.).
Extensive extracts from the "History"
also are published in Anthony Cave
Brown and Charles B. MacDonald,
eds.. The Secret History of the Atomic
Bomb (New York: Dial Press/James
Wade, 1977).
Other manuscript historical ac-
counts cover specific aspects of the
project. On the international activities
of the atomic program, there is the
"Diplomatic History of the Manhattan
Project," compiled by members of
General Groves's staff. Brief narrative
sections, intended to justify involve-
ment of Manhattan personnel in the
international field, are supported by a
useful selection of pertinent docu-
ments. Copies are held by DOE, the
State Department, and NARS (in the
Harrison-Bundy Files).
Several manuscript histories pro-
vide information on the extensive
support that the Manhattan Project
received from other elements of the
Army's wartime staff. In this category
are Richard M. Leighton's "History of
the Control Division, ASF, 1942-
1945" (in two volumes); several
manuscript histories pertinent to mili-
tary intelligence activities, including
Bruce W. Bidwell's "History of the
Military Intelligence Division, Depart-
ment of the Army General Staff'
(Part 5), Capt. C. J. Bernardo's
"Counterintelligence Corps History
and Mission in World War II," the
Army Service Forces' "History of the
bibli()(;raphic:al noie
615
Intelligence Division" (in four vol-
umes), and the Office of the Provost
Marshal General's "The Loyalty In-
vestigations Program"; and the Army
Service Forces' documentary "History
of the Research and Development Di-
vision, 1 July 1940-1 July 1945, with
Supplement to 31 December 1945"
(in three volumes). Also, a section in
\'ernon E. Davis's "Organizational
Development: Development of the
j(^S (committee Structure" (Volume
2) describes how the atomic program
was coordinated with the other armed
services. Copies of all these manu-
script histories are in NARS.
Some of the many hundreds of
firms that were under contract to the
Manhattan Project prepared accounts
of their activities that are more com-
prehensive and detailed than tfie
usual contractor's completion report.
Of considerable importance are those
of the Du Pont Company on the
design and construction of the Clin-
ton semiworks and on the building
and operation of the Hanford Engi-
neer Works. Useful, too, are the his-
tories produced by Roane-Anderson
concerning its management of the
town of Oak Ridge and of passenger
transportation at the Clinton Engi-
neer Works. Copies of contractor his-
tories are in the appropriate DOE
field records centers.
Intennews and Correspondence
Recollections of participants re-
corded in interviews and correspond-
ence gave the author information that
often supplemented the official archi-
val records. ELxcept where otherwise
indicated, copies of interview notes
and correspondence with the follow-
ing persons are on file in the U.S.
Army Center of Military History: Col.
Keith F". Adamson; Col. Whitney Ash-
bridge; Col. Maurice E. Barker; James
Phinney Baxter 3d; Maj. Samuel S.
Baxter; Lt. Col. Benjamin R. Bierer;
Lt. Col. Robert C. Blair; Harvey H.
Bundy (in Columbia University Oral
History Collection); Elkin Burckhardt;
Charles W. Campbell; Lt. Gen. Fred-
erick J. Clarke (in Corps of Engineers,
Engineer Memoirs: Intemiews With Lieu-
tenant General Frederick J. Clarke); Karl
P. Cohen; W^inston Dabney; Col. Peer
de Silva; Brig. Gen. John H. Dudley;
Maj. Harold A. Fidler; Col. Mark C.
Fox; F. A. Gibson; Lt. Gen. Leshe R.
Groves; Lt. Gen. Richard H. Groves;
Edith E. Hagg; Norman Hilberry; F.
E. Jochen; Col. Elmer E. Kirkpatrick,
Jr.; Col. Harry A. Kuhn; Brig. Gen.
James C. Marshall; Col. Franklin T.
Matthias; Pat McAndrew; Maj. Wil-
liam R. McCauley, Jr.; Francis
McHale; Maj. John H. McKinley;
Edwin M. McMillan; Duncan McRae;
Capt. William J. Morrell; Lt. Col.
Edgar J. Murphy; John Musser; S. H.
Nelson; Charles E. Normand; Jean
O'Leary; Harry Parker; David Piccoli;
Maj. Gen. William N. Porter; Robert
Y. Porton; W. B. Reynolds; Frederick
J. Roach; Brig. Gen. Jacquard H. Roth-
schild; Alexander Sachs; Brig. Gen.
Haig Shekerjian; S. Sobol; Henry
L. Stimson (in Columbia University
Oral History Collection); N. D.
Sturgis; Lt. Gen. Wilhelm D. Styer;
Edna Summerfield; Ceroid H. Tenney;
Hanford Thayer; Brig. Gen. Paul W.
I ibbets, Jr. (in Columbia University
Oral Historv Collection); Lt. Col.
616
MANHATl AN: THE ARMY AND THE A lOMIC BOMB
James E. Travis; Harry S. Truman; Vanden Bulck; Raymond K.
Col. Gerald R. Tyler; Lt. Col. Charles Wakerling; and T. Cortland Williams.
Published Sources
U.S. Government Publications:
Prunary Materials
In the years since the end of World
War II, a substantial amount of pri-
mary source material relating to de-
velopment and employment of atomic
energy has become available in publi-
cations of federal agencies. The public
pronouncements of President Harry S.
Truman on atomic energy are conven-
iently assembled in Harry S. Truman:
Containing the Public Messages, Speeches,
and Statements of the President, 1945 and
1946, Public Papers of the Presidents of
the United States (Washington, D.C.:
Government Printing Office, 1 96 1 -62) .
Comprehensive coverage of interna-
tional aspects up to the beginning of
1947 is provided in the Department of
State's carefully edited Foreign Rela-
tions of the United States, Diplomatic
Papers, series. Pertinent are The Confer-
ence of Berlin (The Potsdam Conference),
1945, 2 vols. (Washington, D.C: Gov-
ernment Printing Office, 1960) and Gen-
eral: The United Nations, 1946, Vol. 1
(Washington, D.C: Government Print-
ing Office, 1972). On the preparation of
domestic legislation and the question
of military versus civilian control, the
United States Senate has published its
hearings held in late 1945 and early
1946: U.S. Congress, Senate, Special
Committee on Atomic Energy, Atomic
Energy: Hearings on S. Res. 179, 79th
Cong., 1st and 2d Sess., 27 November
1945-15 February 1946 (Washington,
D.C: Government Printing Office,
1945-46), and Atomic Energy: Hearings
on S. 1717, 79th Cong.," 2d Sess.,
22January-8 April 1946 (Washington
D.C: Government Printing Office,
1946).
In 1954, the United States Atomic
PLnergy Commission published the
transcript of the hearing that its per-
sonnel security board conducted into
the matter of continuing J. Robert
Oppenheimer's security clearance.
Besides data on security, the testimo-
ny recorded in this transcript, much
of it given by participants in the Man-
hattan Project, provides extensive his-
torical information on many other as-
pects of the World War II atomic
energy program. A detailed record of
research in nuclear technology
achieved under government contracts
during World War II is provided in
the multivolumed National Nuclear
Energy Series, prepared under the
sponsorship of the Manhattan District
and its successor civilian agencies, the
Atomic Energy Commission, the
Energy Research and Development
Agency, and the Department of
Energy. There are some one hundred
volumes in the series, arranged in ten
divisions.
I he effects of the atomic bombing
of Japan are covered in detail in sev-
eral of the hundreds of reports pre-
pared by the United States Strategic
BIBLIOGRAPHICAL NOTE
617
Bombing Survey on the effects of
aerial attacks in Europe and the Pacif-
ic in World War II. These reports are
organized into two broad categories,
Europe and the Pacific, and num-
bered consecutively within each cate-
gory. Four reports within the Pacific
category are concerned with the
atomic bombing of Japan. Report 3,
The Effects of Atomic Bombs on Hiroshima
and Nagasaki, issued as an unclassified
publication in mid- 1946, briefly sum-
marizes all aspects in layman's terms.
Report 13, The Effects of Atomic Bombs
on Health and Medical Services in Hiroshi-
ma and Nagasaki, also unclassified and
published in March 1947, provides
detailed data on the medical conse-
quences. Report 92, The Effects of the
Atomic Bomb on Hiroshima, issued in
Mav 1947, and Report 93, The Effects
of the Atomic Bomb on Nagasaki, issued
in June 1947, each in three volumes,
were originally classified secret (sub-
sequently downgraded) and furnish,
in great detail, data on the physical
effects of the atomic bombings. All of
these reports were published by the
Government Printing Office in Wash-
ington, D.C.
The Manhattan District also issued
the results of its own survey, "The
Atomic Bombings of Hiroshima and
Nagasaki," June 1946, and "Photo-
graphs of the Atomic Bombings of
Hiroshima and Nagasaki," June 1946.
The official account of Operation
Crossroads, the atomic bomb tests
conducted by U.S. Joint Task Force
One at Bikini Atoll in the Pacific in
July 1946, is contained in its historical
report Atomic Bomb Tests Able and Baker
(Operation Crossroads), 3 vols. (Wash-
ington, D.C: U.S. Joint Task Force
One, 1947).
U.S. Government Publications:
Secondary Accounts
Among the most useful of second-
ary accounts on the development of
atomic energy and related activities in
World War II are those in historical
series officially sponsored by the U.S.
armed forces and by various govern-
ment agencies. The author found the
following especially valuable.
War Department
An indispensable source on the
wartime project, and a classic in the
literature dealing with the develop-
ment of atomic energy, is the War
Department's official report that was
published shortly after the bombings
of Hiroshima and Nagasaki in August
1945.
Smyth, H. D. A General Account of the
Development of Methods of Using
Atomic Energy for Military Purposes
Under the Auspices of the United'
States Government, 1940-1945.
Washington, D.C: Government
Printing Office, 1945.
In September 1945, Professor
Smyth's institution, Princeton Univer-
sity, issued a slightly modified version
of this account, with the addition of
an index and photographs.
Smyth, H. D. Atomic Energy for Military
Purposes: The Official Report on the
Development of the Atomic Bomb
Under the Auspices of the United
States Government, 1940-1945.
Princeton: Princeton University
Press, 1945.
618
MANHATTAN: THP: ARMY AND IHE A lOMIC BOMB
Department of the Army
Each of the following volumes in
the U.S. Army in World War II series
provides important information on
some historical aspect of the wartime
Army that related to the Manhattan
Project.
Brophy, Leo P., and Fisher, George J.
B. The Chemical Warfare Serince: Or-
ganizing for War. Washington,
D.C.: Government Printing
Office, 1959.
Cline, Ray S. Washington Command
Post: The Operations Division. Wash-
ington, D.C.: Government Print-
ing Office, 1 95 1.
Coll, Blanche D.; Keith, Jean E.; and
Rosenthal, Herbert H. The Corps
of Engineers: Troops and Equipment.
Washington, D.C.: Government
Printing Office, 1958.
Dziuban, Stanley W. Military Relations
Between the United States and
Canada, 1939-1945. Washington,
D.C.: Government Printing
Office, 1959.
Fairchild, Byron, and Grossman, Jon-
athan. The Army and Industrial
Manpower. Washington, D.C.:
Government Printing Office,
1959.
Fine, Lenore, and Remington, Jesse
A. The Corps of Engineers: Construc-
tion in the United States. Washing-
ton, D.C.: Government Printing
Office, 1972.
Green, Constance McLaughlin;
Thomson, Harry C; and Roots,
Peter C. The Ordnance Department:
Planning Munitions for ]Var. Wash-
ington, D.C.: Government Print-
ing Office, 1955.
Matloff, Maurice. Strategic Planning for
Coalition Warfare, 1943-1944.
Washington, D.C.: Government
Printing Office, 1959.
Millett, John D. The Organization and
Role of the Army Service Forces.
Washington, D.C.: Government
Printing Office, 1954.
Palmer, Robert R.; Wiley, Bell I.; and
Keast, William R. The Procurement
and Training of Ground Combat
Troops. Washington, D.C.: Gov-
ernment Printing Office, 1948.
Smith, R. Elberton. The Army and Eco-
nomic Mobilization. Washington,
D.C.: Government Printing
Office, 1959.
Thompson, George Raynor; Harris,
Dixie R.; Oakes, Pauline M.; and
Terrett, Dulany. The Signal Corps:
The Test. Washington, D.C.: Gov-
ernment Printing Office, 1957.
Treadwell, Mattie E. The Women's Army
Corps. Washington, D.C.: Govern-
ment Printing Office, 1954.
Watson, Mark S. Chief of Staff: Prewar
Plans and Preparations. Washing-
ton, D.C.: Government Printing
Office, 1950.
In the World War II series Medical
Department, United States Army, the
following volumes provide data relat-
ing to the organization and activities
of the medical element in the Manhat-
tan Project.
Armfield, Blanche B. Organization and
Administration in World War II.
Washington, D.C.: Government
Printing Office, 1963.
McMinn, John H., and Levin, Max.
Personnel in World War II. Wash-
ington, D.C.: Government Print-
ing Office, 1963.
Warren, Stafford L. "The Role of Ra-
diology in the Development of
the Atomic Bomb." Radiology in
BIBLKK.RAPHICAL NO IE
619
]\'or/(/ War II. Edited by Kenneth
D. A. Allen. Washington, D.C.:
Government Printing Office,
1966.
Depart men t of the Xavy
In the Navv's semiofficial series
History of Ihiited States Naval Oper-
ations in World War II, the story of
the ill-fated Indianapolis, which carried
atomic bomb parts to Finian, and the
achievement of victorv and peace in
the Pacific are dealt with in the fol-
lowing volume.
Morison, Samuel Eliot, rictory m the
Pacific 1945. Vol. 14. Boston:
Little, Brown and Co., 1960.
Arm\ Air Forces
1 wo \olumes in The Army Air
Forces in World War II series, edited
by Wesley Frank Craven and James
Lea Cate, include materials pertinent
to that arm's participation in the
atomic bombing of Japan.
Europe: Argument to ]'-E Day. January
194-1 to May 1945. Vol.' 3. Chica-
go: Universitv of Chicago Press,
1951.
The Pacific: Matterhorn to Xagasaki, June
1944 to August 1945. Vol. 5. Chi-
cago: University of Chicago
Press, 1953.
The special military unit that car-
ried out the atomic bombing of Japan
is depicted in the following volume.
56*9/// Pictorial AU)um: Written and Pub-
lished h\ and f)r the Members of the
509th Composite Group, Tinian,
1945. Edited by Capt. Jerome J.
Ossip. Chicago: Rogers Printing
Co., 1946.
Office of Scientific Research
and Development
Several volumes in the historical
series Science in World War II con-
tain substantial sections on atomic
energy, with emphasis on the OSRD's
role.
Baxter 3d, James Phinney. Scientists
Against Time. Boston: Little,
Brown and Co., 1946.
Stewart, Irvin. Organizing Scientific Re-
search for War: The Administrative
History of the Office of Scientific Re-
search and Development. Boston:
Little, Brown and Co., 1948.
Thiesmeyer, Lincoln R., and Bur-
chard, John E. Combat Scientists.
Boston: Little, Brown and Co.,
1947.
Department of Energy
Hewlett, Richard G., and Anderson,
Oscar E., Jr. The New World,
1939-1946. Vol. 1. University
Park, Pa.: Pennsylvania State Uni-
versity Press, 1962. This volume,
the first in the Department of En-
ergy's history of the former
Atomic Energy Commission,
comprises a detailed narrative of
atomic developments from 1939
through 1946, with emphasis on
the scientific aspects.
, and Duncan, Francis. Atomic
Shield, 1947-1952. Vol. 2. Univer-
sity Park, Pa.: Pennsylvania State
University Press. 1969.
National Bureau of Standards
Cochrane. Rexmond C. Measures for
Progress: A History of the Bureau of
Standards. Washington, D.C.: Na-
620
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
tional Bureau of Standards, U.S.
Department of Commerce, 1966.
Bureau of the Budget
Bureau of the Budget. The United
States at War: Development and Ad-
ministration of the War Program by
the Federal Government. Washing-
ton, D.C.: Committee of Records
of War Administration No. 1,
War Records Section, Bureau of
the Budget, 1946. This is the
first of the bureau's historical re-
ports on administration in World
War II.
Civilian Production Administration
Civilian Production Administration,
Bureau of Demobilization. Indus-
trial Mobilization for War: History of
the War Production Board and Prede-
cessor Agencies, 1940-1945, Program
and Administration. Washington,
D.C.: Government Printing
Office, 1947. This is the first
volume in a projected history of
the War Production Board.
Foreign Government Publications
Foreign governments have spon-
sored a number of official publica-
tions about atomic energy develop-
ments in World War II. The author
found the following useful in prepar-
ing his account of the Manhattan
Project.
United Kingdom
Crowther, J. G., and Whiddington, R.
Science at War. London: His Maj-
esty's Stationery Office, 1947.
Gowing, Margaret. Britain and Atomic
Energy, 1939-1945. London: Mac-
millan and Co., St. Martin's
Press, 1964. This volume is the
official history of the British war-
time atomic energy program.
, Independence and Deterrence: Brit-
ain and Atomic Energy, 1945-1952.
2 vols. New York: St. Martin's
Press, 1974. This work, written
with the assistance of Lora
Arnold, is the continuation of the
official history of the British
atomic energy program.
Hall, H. Duncan, and Wrigley, C. C.
Studies of Overseas Supply. History
of the Second World War.
London: Her Majesty's Stationery
Office, 1956. J. D. Scott wrote
one of the chapters in this
volume.
Japan
The Committee for the Compilation of
Materials on Damage Caused by
the Atomic Bombs in Hiroshima
and Nagasaki, ed. Hiroshima and
Nagasaki: The Physical, Medical, and
Social Effects of the Atomic Bombings.
Translated by Eisei Ishikawa and
David L. Swain. New York: Basic
Books, 1981. This report, com-
missioned by the cities of Hiro-
shima and Nagasaki, was compiled
by a committee of thirty-four Japa-
nese specialists, with the aim of
achieving as definitive an account
as possible of the nature and
extent of the damage wrought by
the atomic bombings of 6 and 9
August 1945.
Office of Civil Defense, Office of the
Secretary of War (Japan), and
Technical Management Office,
BIBLIOGRAPHICAL NOTE
621
U.S. Naval Radio. Analysis of Japa-
nese Nuclear Casualty Data. Com-
piled by L. Wayne Davis et aL Al-
buquerque, N.Mex: Dikewood
Corp., April 1966.
Personal Accounts, Memoirs, and
Collected Papers
Of the many personal accounts,
memoirs, and collected papers of par-
ticipants in the Manhattan Project or
in events related to the development
and employment of the atomic bomb,
the author has found the following
volumes to be most useful.
Arnold, H. H. Global Mission. New
York: Harper and Brothers, 1949.
Bush, Vannevar. Pieces of the Action.
New York: William Morrow,
1970.
Compton, Arthur Holly, Atomic Quest:
A Personal Narrative. New York:
Oxford University Press, 1956.
Conant, James Bryant. My Several
Lives: Memoirs of a Social Inventor.
New York: Harper and Row,
1970.
Fermi, Enrico. United States, 1939-
1954. The Collected Papers of
Enrico Fermi. Edited by Emilio
Segre et al. Vol. 2. Chicago: Uni-
versity of Chicago Press, 1965.
Fermi, Laura. Atoms in the Family: My
Life With Enrico Fermi. Chicago:
University of Chicago Press,
1954.
Goldschmidt, Bertrand. The Atomic Ad-
venture: Its Political and Technical
Aspects. Translated from the
French by Peter Beer. Oxford,
England, and New York: Perga-
mon Press and Macmillan Co.,
1964.
Goudsmit, Samuel A. ALSOS. New
York: Henry Schuman, 1947.
Groves, Leslie R. Now It Can Be Told:
The Story of the Manhattan Project.
New York: Harper and Brothers,
1962.
Leahy, William D. / Was There. New
York: Whittlesey House,
McGraw-Hill Book Co., 1950.
Ley, Willy, ed. and trans. Otto Hahn: A
Scientific Autobiography. New York:
Scribner's Sons, 1966.
Lilienthal, David E. The Journals of
David E. Lilienthal. 5 vols. New
York: Harper and Row, 1964.
Volumes 1 and 2, covering the
years from 1939 to 1950, include
references pertinent to the Man-
hattan Project.
Mac Arthur, Douglas. Reminiscences.
New York: McGraw-Hill Book
Co., 1964.
Oppenheimer, J. Robert. Robert Oppen-
heimer: Letters and Recollections.
Edited by Alice Kimball Smith
and Charles Weiner. Cambridge,
Mass.: Harvard University Press,
1980.
Pash, Boris T. The ALSOS Mission.
New York: Award House, 1969.
Pickersgill, J. W. The Mackenzie King
Record, 1939-1944. Vol. 1. To-
ronto: University of Toronto
Press, 1960.
, and Forster, D. F., The Macken-
zie King Record, 1944-1948. Vols.
2-4. Toronto: University of To-
ronto Press, 1968-70. The above
four volumes comprise the sub-
stantially edited diary of William
Lyon Mackenzie King.
Speer, Albert. Inside the Third Reich-
Memoirs. Translated from the
German bv Richard and Clara
622
MANHATTAN: IHE ARMY AND THE A lOMIC BOMB
Winston. New York: Macmillan
Co., 1969.
Stimson, Henry L., and Bundy,
McGeorge. On Active Service in
Peace and War. New York: Harper
and Brothers, 1947.
Strauss, Lewis L. Men and Decisions.
Garden City, N.Y.: Doubleday
and Co., 1962.
Szilard, Leo. "Reminiscences." In The
Intellectual Migration: Europe and
America, 1930-1960. Perspectives
in American History. Vol. 2.
Cambridge, Mass.: Charles
Warren Center for Studies in
American History, Harvard Llni-
versity Press, 1968.
Teller, Edward, and Brown, Allen.
The Legacy of Hiroshima. Garden
City, N.Y.: Doubleday and Co.,
1962.
Tibbets, Paul W., Jr. The Tibbets Story.
New York: Stein and Day, 1978.'
Truman, Harry S. Memoirs. 2 vols.
Garden City, N.Y.: Doubledav
and Co., 1955-56.
Biographical Studies
Most of the biographical studies of
participants in the World War II
atomic energy program are of scien-
tists or political figures. The author
found that the following volumes pro-
vide some insight into the Army's role
in the program.
Allison, Samuel K. "Arthur Holly
Compton." In Xational Academy of
Sciences: Biographical Memoirs. Vol.
38 (pp. 81-110). New York: Co-
lumbia University Press, 1965.
Baker, Liva. Felix Frankfurter. New
York: Coward-McCann, 1969.
Bernstein, Jeremy. Hans Bethe: Prophet
of Energy. Cambridge, Mass.:
Basic Books, 1980.
Biquard, Pierre. Frederic Joliot-Curie:
The Man and His Theories. New
York: Paul S. Eriksson, 1965.
Blumberg, Stanley A., and Owens,
Gwinn. Energy and Conflict: The
Life and Times of Edward Teller.
New York: G. P. Putnam's Sons,
1976.
Childs, Herbert. An American Genius:
The Life and Times of Ernest Orlando
Lawrence. New York: E. P. Dutton
and Co., 1968.
Clark, Ronald W. Einstein: The Life and
Times. New York: World Publish-
ing Co., 1971.
Tizard. Cambridge, Mass.:
Massachusetts Institute of Tech-
nology Press, 1965.
Davis, Nuel P. Lawrence and Oppen-
heimer. New Y'ork: Simon and
Schuster, 1968.
Fermi. Laura. Illustrious Immigrants: The
Intellectual Migration From Europe,
1930-1941. Chicago: University
of Chicago Press, 1968.
Goodchild, Peter J. / Robert Oppen-
heimer. Shatterer of Worlds. Boston:
Houghton Mifflin Co., 1981.
Harrod, R. F. The Prof A Personal
Memoir of Lord Chenvell. London:
Macmillan and Co., 1959.
Huie, William Bradford. The Hiroshima
Pilot: The Case of Major Claude
Fatherly. New York: G. P. Put-
nam's Sons, 1964.
Kunetka, James W. Oppenheimer: The
Years of Risk. Englewood Cliffs,
NJ.: Prentice-Hall, 1982.
Latil, Pierre de. Enrico Fermi: The Man
and His Theories. New York: Paul
S. Eriksson, 1966.
BIBLIOCiRAPHICAL NO IE
623
Libby, Lcona Marshall. The Uranium
People. New York: Oanc, Russak,
1979.
Michelmorc, Peter. The Swift Years: The
Robert Oppeuheimer Story. New-
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Moore, Ruth. Xiels Bohr: The Man, His
Science, and the World They Changed.
New York: Alfred A. Knopf,
1966.
Moorehead, Alan. The Traitors: The
Double Life of Fuchs, Pontecorvo, and
Xiinn Slay. London: Hamish
Hamilton, 1952.
Morison, Elting E. Turmoil and Tradi-
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Henry L. Stimson. Boston: Hough-
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Rozental, S., ed. Niels Bohr: His Life
and Work as Seen by Friends and Col-
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Rouze, Michel. Robert Oppenheimer: The
Man and His Theories. New York:
Paul S. Eriksson, 1965.
Segre, Emilio. Enrico Fermi, Physicist.
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Ulam, Stanislav; Kuhn, H. W.;
Tucker, A. W.; and Shannon,
Claude E. "John von Neumann,
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Press, 1968.
Books on Other Aspects
Alexander, Frederic C., jr. History of
Sandia Corporation Through Fiscal
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Sandia Corp., 1963.
Bar-Zohar, Michel. The Hunt for
German Scientists. Translated by
Len Ortzen from the French La
Chasse aux Savants allemands. New-
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Batchelder, Robert C. The Irreversible
Decision, 1939-1950. Boston:
Houghton Mifflin Co., 1962.
Bentwich, Norman. The Rescue and
Achievement of Displaced Scholars and
Scientists, 1933-1952. The Hague:
Martinus Nijhoff, 1953.
Bernstein, Barton J., ed. The Atomic
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Boston: Little, Brown and Co.,
1976.
Beyerchen, Alan D. Scientists Under
Hitler: Politics and the Physics Com-
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Haven: Yale University Press,
1977.
Brodie, Bernard and Fawn. From
Crossboiv to H-Bomb. Rev. and enl.
ed. Bloomington, Ind.: Indiana
LIniversity Press, 1973.
Butow, Robert J. C.Japan's Decision To
Surrender. Palo Alto, Calif.: Stan-
ford LIniversity Press, 1954.
Church, Peggy Pond. The House at
Otowi Bridge. Albuquerque: Uni-
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1959.
Churchill, Winston S. The Second World
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The Second World War: The
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Mifflin Co., 1950.
The Second World War: Triumph
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Mifflin Co.; 1953.
Clark, Ronald W. The Birth of the
Bomb. New York: Horizon Press,
1961.
624
MANHA 1 IAN: THE ARMY AND THE A EOMIC BOMB
The Greatest Power on Earth: The
International Race for Nuclear Su-
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under the title The Greatest Power
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DeWeerd, H. A. British-American Col-
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Rand Corp., 1963.
Dietz, David. Atomic Science, Bomb and
Power. New York: Dodd, Mead
and Co., 1954.
Du Pont de Nemours and Company,
E. I. Du Pontes Part in the National
Security Program, 1 94 0-194 5. Wil-
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Eggleston, Wilfrid. Canada's Nuclear
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Feis, Herbert. The Atomic Bomb and the
End of World War II. Princeton:
Princeton University Press, 1966.
This is a revised edition of a
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Giovanitti, Len, and Freed, Fred. The
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Glasstone, Samuel. Sourcebook on
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Goldschmidt, Bertrand. The Atomic
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Les Rivalites atomiques, 1939-
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Groueff, Stephane. Manhattan Project:
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Hecht, Selig. Explaining the Atom. 2d
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1954.
Hempstone, Smith. Rebels, Mercenaries
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New York: Frederick A. Praeger,
1962.
Herken, Gregg F. The Winning Weapon:
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Irving, David. The I'lrus House.
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Kopp, Theodore F. Weapon of Silence.
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Kramish, Arnold. Atomic Energy in the
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Kunetka, James W. City of Fire: Los
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I
bibli()(;raphk.al noik
625
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Lamont, Lansing. Das of Trinity. New
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Lang, Daniel. Early Tales of the Atomic
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Lapp, Ralph E. Atoms and People. New
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Laurence, William L. Men and Atoms:
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Martin, Roscoe C, ed. TVA: The First
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McKee, Robert E. The Zia Company in
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Nelson, Donald M. Arsenal of Democra-
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Newcomb, Richard F. Abandon Ship.'
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The Pacific War Research Society. The
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Robinson, George O., Jr. The Oak
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Schoenberger, Walter Smith. Decision
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Seaborg, Glenn T. The Transuranium
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Sherwin, Martin J. A World Destroyed:
The Atomic Bomb and the Grand Alli-
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Sherwood, Robert E. Roosevelt and
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Smith, Alice Kimball. A Peril and a
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Stern, Phillip M. The Oppenheimer Case:
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Harper and Row, 1969.
Stone and Webster Engineering Cor-
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Stone and Webster Engineering Corpo-
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Stone and Webster, 1946.
Thomas, Gordon, and Witts, Max
Morgan. Enola Gay. New York:
Stein and Day, 1977.
Thompson, Paul W. What You Should
Know About the Army Engineers.
New \'ork: W. W. Norton and
Co., 1942.
Van Arsdol, Ted. Hanford: The Big
Secret. Richland, Wash.: Columbia
Basin Xews, 1958.
626 MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Wheeler, Keith, and the Editors of Wyden, Peter. Day One: Before Hiroshima
Time-Life Books. The Fall of Japan. and After. New York: Simon and
Alexandria, Va.: Time-Life, 1983. Schuster, 1984.
Guide to Archival Collections
To reduce the length of the footnotes, the following abbreviations
were used to indicate the specific archival collection for each document
cited.
ANL Records of the Argonne National Laboratory
U.S. Department of Energy
Lemont, Illinois
ASF Record Group 160
Records of Headquarters Army Service Forces
Records of the Office of the Commanding General, 1941-46
National Archives and Records Service
Washington, D.C.
CMH Records of the Center of Military History
Department of the Army
Washington, D.C.
DASA Record Group 374
Records of the Defense Atomic Support Agency
National Archives and Records Service
Washington, D.C.
DS Records of the U.S. Department of State
Washington, D.C.
FDR Papers of Franklin D. Roosevelt
Franklin D. Roosevelt Library
Hyde Park, New York
HLH Papers of Harry L. Hopkins
Franklin D. Roosevelt Library
Hyde Park, New York
HLS Henry L. Stimson Collection
Sterling Memorial Library
Yale University
New Haven, Connecticut
HOO Records of the Hanford Operations Office
U.S. Department of F.nergy
Richland, Washington
628
MANHA r IAN: THE ARMY AND THE ATOMIC BOMB
JCS Record Group 218
Records of the United States Joint Chiefs of Staff
National Archives and Records Service
Washington, D.C.
LASL Records of the Los Alamos Scientific Laboratory
U.S. Department of Energy
Los Alamos, New Mexico
LC Library of Congress
Washington, D.C.
LRG Record Group 200
National Archives Gift Collection
Papers of Leslie R. Groves
National Archives and Records Service
Washington, D.C.
LRL Records of the Lawrence Radiation Laboratory
U.S. Department of Energy
Berkeley, California
MDR Record Group 77
Records of the Office of the Chief of Engineers
Records of the Manhattan Engineer District, 1942-48
National Archives and Records Service
Washington, D.C.
OCEHD Records of the Office of the Chief of Engineers,
Historical Division
U.S. Army Corps of Engineers
Washington, D.C.
OCO Record Group 156
Records of the Office of the Chief of Ordnance
National Archives and Records Service
Washington, D.C.
OROO Records of the Oak Ridge Operations Office
U.S. Department of Energy
Oak Ridge, Tennessee
OSRD Record Group 227
Records of the Office of Scientific Research and Development
National Archives and Records Service
Washington, D.C.
SEOO Records of the San Erancisco Operations Office
U.S. Department of Energy
San Francisco, California
GUIDE K) ARC:HI\ AI. COLLKC/IIONS 529
SHRC Records of the Albert F. Simpson Historical Research Center
Maxwell Air Force Base, Alabama
USS Record Group 46
Records of the United States Senate
National Archives and Records Service
Washington, D.C.
List of Abbreviations
AAF
Army Air Forces
ACS
Assistant Chief of Staff
Act
Acting
Admin
Administrative; Administrator
AEC
Atomic Energy Commission
AEM
Architect-Engineer-Manager
AFL
American Federation of Labor
AFSWP
Armed Forces Special Weapons Project
Agri
Agricuhure
ANMB
Army and Navy Munitions Board
Ann(s)
Annex(es)
AR
Army Regulation
ASF
Army Service Forces
Asst(s)
Assistant(s)
ASTP
Army SpeciaUzed Training Program
Att
Attachment
Attn
Attention
Atty
Attorney
Bldg
Building
BPA
Bonneville Power Administration
Br
Branch
Budg
Budget
Bull(s)
Bulletm(s)
Bur
Bureau
Cdr
Commander
CDT
Combined Development Trust
CE
Corps of Engineers
Cert(s)
Certiricate(s)
CEW
Clinton Engineer Works
CG
Commanding General
CIC
Counterintelligence Corps
CINCAFPAC
Commander in Chief, U.S. Army Forces, Pacific
CINCPOA
Commander in Chief, Pacific Ocean Areas
CIO
Congress of Industrial Organizations
Cir
Circular
Cmd
Command
632
MANHATTAN: THE ARMY AND IHE A lOMIC BOMB
CO
Commanding Officer
Co
Company
Comm
Commerce
Conf
Conference
Cong
Congress
Constr
Construction
Corp
Corporation
Corresp
Correspondence
CPC
Combined Policy Committee
CPFF
Cost Plus Fixed Fee
CWS
Chemical Warfare Service
DASA
Defense Atomic Support Agency
Def
Defense
Deliv
Delivery
Dep
Deputy
Dept
Department
Det
Detachment
DF
Disposition Form
Diff
Diffusion
Dir
Director
Dist
District
Div
Division
DSM
Development of Substitute Materials
Engr(s)
Engineer(s)
Env
Envelope
Equip
Equipment
ETO
European Theater of Operations
ETOUSA
European Theater of Operations, U.S. Arrr
Ex
Executive
Fab
Fabrication
FBI
Federal Bureau of Investigation
Fwd
Forward
FY
Fiscal Year
G-1
Personnel
G-2
Intelligence
Gen
General
GO
General Orders
GOCO
Government Owned, Contractor Operated
Govt
Government
Gp
Group
GSC
General Staff Corps
LIS 1 OF ABBREVIA riONS
633
H
House
HB
Harrison-Bundy
HEW
Hanford Engineer Works
Hist
History
HQ.
Headquarters
Hwy
Highway
IBM
International Business Machines
ICC
Interstate Commerce Commission
Intel
Intelligence
Incl
Inclosure
Ind
Indorsement
Insp
Inspector; Inspection
Instl(s)
Installation(s)
Instr(s)
Instruction(s)
Interv
Interview
Intro
Introduction
JCS
Joint Chiefs of Staff
JNW
Joint Committee on New Weapons anc
Just
Justice
K-25
Gaseous diffusion project
K-27
Gaseous difhision extension unit
Lab
Laboratory
LASL
Los Alamos Scientific Laboratory
Ldr
Leader
Ltr
Letter
Mad
Madison
Maim
Maintenance
Man
Managing
Mat
Materials
MD
Manhattan District
Med
Medical
MED
Manhattan Engineer District
Memo
Memorandum
Met
Metallurgical
Mfg
Manufacturing
Mgr
Manager
MID
Military Intelligence Division
Mil
Military
Min
Minutes
MIS
Military Intelligence Service
Misc
Miscellaneous
MIT
Massachusetts Institute of Technology
and Equipment
634
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
MP
Manhattan Project; Military Policy; Military Police
MPC
Military Policy Committee
Ms
Manuscript
MSA
Madison Square Area
Mtg
Meeting
Mtn(s)
Mountain(s)
Natl(s)
National(s)
NDRC
National Defense Research Committee
NLRB
National Labor Relations Board
No
Number
NWLB
National War Labor Board
OCE
Office of the Chief of Engineers
OCG
Office of the Commanding General
OCO
Office of the Chief of Ordnance
OCS
Office of the Chief of Staff
ODT
Office of Defense Transportation
OEM
Office of Emergency Management
Off(s)
Officer(s)
OIC
Officer in Charge
OIG
Office of the Inspector General
OPD
Operations Division
OPMG
Office of the Provost Marshal General
Opn(s)
Operations
OQMG
Office of the Quartermaster General
Ord
Ordnance
ORD
Ohio River Division
Org(s)
Organization(s)
OSG
Office of the Surgeon General
OSRD
Office of Scientific Research and Development
OWU
Office of War Utilities
P-9
Heavy Water
PED
Provisional Engineer Detachment
PD
Pacific Division
PR
Press Release
Prelim
Preliminary
Prgm(s)
Program(s)
Prod
Production
Proj(s)
Project (s)
Promo(s)
Promotion(s)
Prov(s)
Provision(s); Provisional
Pub
Public
Rad
Radiation
R&D
Research &: Development
LIST OF ABBREVIATIONS
635
Re
Regarding
Rec(s)
Rec()rd(s); Recording
Reg(s)
Regulali()n(s)
Rels
Relations
Res
Resolution
Rev
Revision; Revised
Rpt(s)
Report(s)
S
Senate
S-1
OSRD's uranium program
S-50
Liquid thermal difTusion project
SCAP
Supreme Commander for the Allied Powers
Scty
Security
Sec
Section
Secy
Secretary
SED
Special Engineer Detachment
Sen
Senator
Ser
Series
Sess
Session
SHAEF
Supreme Headquarters, Allied Expeditionary Force
SMI
Safeguarding Military Information
SOS
Services of Supply
Spec
Special
Sq
Square
Sup
Superseding
Supp
Supplement
Supt
Superintendent
Surg
Surgeon
Svc
Service
SW
Southwest
SWD
Southwestern Division
TA
Tube Alloys
TAG
The Adjutant General
TEC
Tennessee Eastman Corporation
Tech
Technical
Telecon
Telephone conversation
Telg
Telegram
rherm
rhermal
Trans
Transportation
Treas
Freasury
TVA
I ennessee Valley Authoritv
Und
Under
Univ
University
USASIAF
United States Army Strategic Air Forces
USN
United Slates Navv
636
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
USSBS
United States Strategic Bombing Survey
WAAC
Women's Army Auxiliary Corps
WAG
Women's Army Corps
WD
War Department
WDGS
War Department General Staff
WDSS
War Department Special Staff
West
Western
WMC
War Manpower Commission
WPB
War Production Board
Wpn(s)
Weapon(s)
WW I
World War I
WWII
World War II
X-10
Plutonium project
Y-12
Electromagnetic project
ZI
Zone of Interior
UNITED STATES ARMY IN WORLD WAR II
rhe following volumes have been published or are in press:
The War Department
Chief of Staff: Prewar Plans and Preparations
Washington Command Post: The Operations Division
Strategic Planning for Coalition Warfare. 1941-1942
Strategic Planning for Coalition Warfare, 1943-1944
(;iobal Logistics and Strategy, 1940-1943
Global Logistics and Strategy, 1943-1945
The Army and Economic Mobilization
The Army and Industrial Manpower
The Army Ground Forces
The Organization of Ground Combat Lroops
The Procurement and Training of Ground Combat Troops
The Army Service Forces
The Organization and Role of the Army Service Forces
The Western Hemisphere
The Framework of Hemisphere Defense
Guarding the L'nited States and Its Outposts
The War in the Pacific
The Fall of the Philippines
Guadalcanal: The First Offensive
Victory in Papua
Cartwheel: The Reduction of Rabaul
Seizure of the Gilberts and Marshalls
Campaign in the Marianas
The Approach to the Philippines
Leyte: T he Return to the Philippines
T riumph in the Philippmes
Okinawa: Ihe Last Battle
Strategy and Command: I he First 1 wo Years
Ihe Mediterranean T heater of Operations
Northwest Africa: Seizing the Initiative in the West
Sicih and the Surrender of Italy
Salerno to Cassino
Cassino to the Alps
638 MANHATTAN: THE ARMY AND THE ATOMIC BOMB
The European Theater of Operations
Cross-Channel Attack
Breakout and Pursuit
The Lorraine Campaign
The Siegfried Line Campaign
The Ardennes: Battle of the Bulge
The Last Offensive
The Supreme Command
Logistical Support of the Armies, May 1941 -September 1944
Logistical Support of the Armies, September 1944-May 1945
The Middle East Theater
The Persian Corridor and Aid to Russia
The Chma-BurmaTndia Theater
Stilwell's Mission to China
Slilwell's Command Problems
Time Runs Out m CBI
The Technical Services
The Chemical Warfare Service: Organizing for War
The Chemical Warfare Service: From Laboratory to Field
The Chemical Warfare Service: Chemicals in Combat
The Corps of Engineers: Troops and Equipment
The Corps of Engmeers: The War Against Japan
The Corps of Engineers: The War Against Germany
The Corps of Engineers: Construction in the United States
The Medical Department: Hospitalization and Evacuation,
Zone of Interior
The Medical Department: Medical Service in the Mediterranean
and Minor Theaters
The Ordnance Department: Planning Munitions for War
The Ordnance Department: Procurement and Supply
The Ordnance Department: On Beachhead and Battlefront
The Quartermaster Corps: Organization, Supply, and Services, Volume I
The Quartermaster Corps: Organization, Supply, and Services, Volume II
The Quartermaster Corps: Operations in the War Against Japan
The Quartermaster Corps: Operations in the War Against Germany
The Signal Corps: The Emergency
The Signal Corps: The Test
The Signal Corps: The Outcome
The Transportation Corps: Responsibilities, Organization, and Operations
The Transportation Corps: Movements, Training, and Supply
The Transportation Corps: Operations Overseas
unhed states army in world war ii
Special Studies
Chronology, 1941-1945
Military Relations Between the United States and Canada, 1939-1945
Rearming the French
Three Battles: Arnaville, Altuzzo, and Schmidt
The Women's Army Ck)rps
(^ivil Affairs: Soldiers Become Governors
Buying Aircraft: Materiel Procurement for the Army Air Forces
The Employment of Negro Troops
Manhattan: The Army and the Atomic Bomb
Pictorial Record
The War Against Germany and Italy: Mediterranean and Adjacent Areas
The War Against Germany: Europe and Adjacent Areas
The War Agamst Japan
639
U.S. Army Center of Military History
The Center of Military History prepares and publishes histories as re-
quired by the U.S. Army. It coordinates Army historical matters, including his-
torical properties, and supervises the Army museum system. It also maintains
liaison with public and private agencies and individuals to stimulate interest
and study in the field of military history. The center is located at 20 Massachu-
setts Avenue, NW, Washington, D.C. 20314.
Department of the Army Historical Advisory Committee
Roger A. Beaumont, Texas A&M University
Maj. Cien. Qiiinn H. Becker, Deputy Surgeon General, U.S. Army
Maj. Gen. John B. Blount, U.S. Army Training and Doctrine Command
Brig. Gen. Dallas C Brown, Jr., U.S. Army War College
Richard D. C^hallener, Princeton Ihiiversity
(k)l. Roy K. Mint, U.S. Military Academy
John H. Hatcher, OfTice of the Assistant Chief of Staff for Information
Management
Archer Jones, North Dakota State University
Jamie W. Moore, The Citadel
James C. Olson, University of Missouri
James O'Neil, National Archives and Records Service
Charles P. Roland, University of Kentucky
John Shy, University of Michigan
Col. William A. Stoflt, U.S. Army Command and General Staff College
Index
Aachen, Germany, 288
Abelson, Philip H., 36, 172-76, 180
Acheson, Dean, 573
Acheson-Lilienthal report, 574
Ackari. L. G., 199
Adams County, Wash., 110, 332
Adamson, Lt. Col. Keith F., 19-22, 24
Adelman, Arthur, 20
Adler, Edward, 154-57
Advisory Committee on Nuclear Research, 26-27
.Advisory Committee on Research and Development,
589-91
Advisory Committee on Uranium, 21-23, 26. See also
OfTice of Scientific Research and Development.
S-1 Executive Committee and S-1 Section;
Uranium, Committee on; Uranium, Section on.
African Metals Corporation, 65, 79, 300-301, 304,
308, 310, See also Union Miniere du Haut
Katanga.
Agreement and Declaration of Trust, 297-98, 30 1«,
304, 572
Air Engineering Squadron, 603d, 521
Air Force
Eighth, 288
Twentieth, 523, 528, 530
Air Service Group, 390th, 521
Air Transport Command, 217, 408-09
Akers, Wallace A., 99, 229-33. 237, 245
Alabama Ordnance Works, 108, 191, 343
Alamogordo Army Air Field, N.Mex., 478, 507, 511,
517. .SV^' also Project Trinity, bomb test.
Albuquerque District, 84-85, 466, 468-69, 486
Allis-Chalmers Manufacturing Compan\
electromagnetic project, 130, 133, 136-37
gaseous diffusion plant, 158, 160
unionized, 371
Allison, Samuel K., 488
Alma 1 railers, 437
Alpha racetracks. 120, 128-29, 132, 134-39, 142,
144, 580
Alsos mission
in Italy, 281-82
in London, 282-84
organization of, 280-81
in Western Europe, 285-91
Amberg, Julius M., 337, .340
American atomic energy program. See Manhattan
Project.
American Cynamid, 314
American Federation of Labor, 351, 370-71
American Industrial 1 ransit. Inc.. 446
American Red Cross, 428. 443
Anacostia Station. D.C.. 173
Anchor Ranch Proving Ground, N.Mex., 506-07
Anderson, Herbert L., 8//
Anderson, Sir John
agreements with French scientists, 249-52
Anglo-American collaboration, 228-29, 235, 237,
239. 244, 248. 561. 571
control of Congo ore deposits, 297-98, 300
thorium supplies, 305
Anderson County, Tenn., 70, 78. 320. 326, 403
Anglo-American collaboration
acliievement of in 1940-41, 29, 31
breakdown of in 1942. 227-32
Combined Policy Committee, 239. 241-43. 245-
47. 252
French repatriated scientists, 248-52
new negotiations in 1943. 232-40
postwar planning. 564-67. 570-73
Quebec Agreement, 241-42, 245, 247, 249
and security, 230
Applied Physics Laboratory, 508
Argonne Forest, 111.. 47, 67-68, 71-72, 96, 1 11-14,
185, 194, 221. 247
Argonne Laboratory, 113, 200. 342, 350, 385, 590.
See also Metallurgical Project.
Argonne National Laboratory, 590
Aristotle, 3
Armed Forces Special Weapons Project, 600«
Army Air Forces. 490, 495, 519-23
Army Command Administrative Network, 395
Army Groups
6th, 287-88. 290
12th, 288
20th. 288
Army and Navy Munitions Board, 57-61. 67, 81
Army Service Forces, 116, 208«, 358, 365. See also
Services of Supply.
Army Specialized Training Program. 358. 497
Arneson. Isl Lt. R. Gordon, 555
Arnold, General Henry H., 519-21, 523, 528-29
Arnold. Samuel T.. 350. 492
Ashbridge. Lt. Col. Whitney
Los Alamos construction. 469. 475. 477
Los Alamos post commander, 425, 487, 497-98,
500-501
Ashworth, Comdr. Frederick L., 524, 529, 540-42
Associated Press (Albuquerque), 514, 517
644
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Associated I'niversilies, Inc., 590-91
Atchison, Fopcka and Santa Fe Railroad, 397, 478
Atkinson, Guy F., Company, 406
Atlee, Clement, 570, 572-73
Atomic bombing of Japan
AAFiolein, 519-23
American casualties in, 547
overseas bases for, 523-28
preparations for, 519-23, 534-36
Senate hearings on, 548-50
target choices for, 528-30
USASTAF directive for, 534
Atomic communities. See Clinton Engineer Works;
Hanford Engineer Works; Eos Alamos
Laboratory.
Atomic energy
international control of, 569-74
postwar legislation, 574-78
postwar planning, 562-68
Atomic Energy Act of 1946, 578, 596, 598-99
Atomic F^nergy Commission. See United States
Atomic Energy Commission.
Atomic fission
concept, historical evolution of, 3-8
military application of, 11-12
and uranium, 8-1 1
Auger, Pierre, 249-50, 252
Aurand, Maj. Gen. Henry S., 597
Austin, Warren R., 577
B-29s, 510«, 520-23, 528
Bacher, Robert F., 574, 589, 597-98
Bacon, Francis, 3
Badger, E. B., and Sons, 49, 58
Badoglio, Marshal Pietro, 281
Bambridge, Kenneth, 478, 515
Bakelite Corporation, 151, 155, 160. See also Union
Carbide and Carbon Corporation.
Ballistic Research Laboratory, 487
Bandelier National Monument, N.Mex., 469
Bankers Trust Company, 302
Bard, Ralph A., 530
Barker, Maj. Maurice E., 20
Barkley, Alben W., 272
Barnard, Chester I., 574
Barnes, Sir Thomas, 297
Barnes, W. L. Gorell, 298
Barrier R&D, 154-57-
Baruch, Bernard M., 573-74
Bateman, George C, 299
Batista Field, Cuba, 523
Baxter, John P.. 145
Baxter, Capi. Samuel S., 435-37, 443
Bayway, N.J., 133
Beams, Jesse W., 10, 36
Bear Creek Valley, Tenn., 130
Becquerel, Henri, 4
Belgian .Agreement. See Tripartite Agreement.
Belgian Congo and uranium ore, 8, 14, 24-25, 79-
80, 292, 295-96, 310, 312
Bell, Daniel W., 67
Bell Telephone Laboratorie.'i, 151, 155
Benbow, Maj. Horace S., 247
Benton Countv, Wash., 1 10, 332, 451
Beta racetracks, 128-29, 132, 135, 139, 142, 580
Bethel Valley, Tenn., 204, 206
Bethlehem Steel Corporation, 160
Betts, Brig. Gen. Edward C, 297-98
Beverly Junction, Wash., 405, 408«
Biddle, Francis, 338, 340-41
Bikini Atoll tests. See Operation Crossroads.
Bissell, Maj. Gen. Clayton L., 285
Bissingen, Germany, 287, 290
Black Oak Ridge, Tenn., 78-79, 320«, 433-34, 443
Black oxide, processing of, 310-12, 314-16
Blair, A. Farnell, 437
Blair, Lt. Col. Robert C, 443
Blair Road, CEW, 403-04
Bloch, Capt. Edward J., 438
Blok, Arthur, 248
Bock's Cflr (B-29), 540-41
Bohemian Grove. Muir Woods, Calif., 70-72, 74,
79,96
Bohr, Niels, 4, 7, 13, 564
Bomb components stockpile, postwar, 58 b(, 593-94
Bomb models, 508
Bombardment Squadron (VH), 393d, 521-23
Bombardment Wing, 313th, 526
Bomber Command, XXI, 526
Bonnet, Maj. William A., 137
Bonneville Dam, Wash., 1 10, 392
Bonneville Power Administration, 69, 110, 378-81,
387-88, 391-94
Bowen, Rear Adm. Harold G., 24, 26
Boyd, George E., 318
Boyle, Robert, 3
Bradbury, Comdr. Norris, 582
Brazier, B. E., 476
Breeder reactor, 583
Breieton. Lt. Gen. Lewis H., 598
Brewster, Owen, 335«
Bridges, Styles, 273
Briggs, Lyman J.
development of atomic energv program, 21-24,
26-27, 34, 38, 44
liquid thermal diffusion process, 173-75
Brindisi, Italy, 281
British atomic project. See Lube Alloys.
British Mission to Japan, 545
British scientists
electromagnetic research, 124-25, 147
gaseous diffusion process, 10, 29-30, 35, 153,
155-56, 230-31
interchange policy, 271, 304
Brookhaven National Laboratory, 591-92
Brown, Edward J., 354
Brown oxide, processing of, 315-16
Brown LJnivcrsity, 1 19//
INDEX
645
Bruce, E. L., 437
Brims General Hospital (Santa Fe), 425
Brush Beryllium Company, 313
Building and Construction Trades Department,
AFL, 351, 370-71
Bundy, Harvey, 46, 60, 77, 242, 298, 337, 349, 513
Anglo-American collaboration, 228, 237, 240,
248, 251-52
postwar planning, 560, 567-68
Bureau of Mines, 313, 427
Bureau of Ordnance (Naw), 495, 501, 505
Bush. Lt. Harold C, 480-81
Bush, \'annevar, 47, 53-54, 56, 174, 285, 335
Anglo-American collaboration, 227-31, 234-40,
248, 250, 296
Army control of atomic program, 73-74, 76-77
bombing of Japan, 514, 516, 530
Combined Policy Committee, 241-43, 246
development of atomic program, 30-35, 37-39
establishment of Manhattan District, 40, 44, 46
Los Alamos program, 87, 494
Military Policy Committee, 77, 227, 335, 494, 589
NDRC and OSRD, 26-28. 30-31
postwar planning, 556, 563, 565-71, 573-75
priority ratings, 59-61
scientific personnel procurement, 345, 349
security system for Manhattan District, 261, 273,
277
Top Policy Group, 31, 34, 73
Byrd, Harry F., 336, 577
Byrnes, James F., 374, 530, 533, 570-71, 573
C-54's, 527. 536
California Institute of Technology, 499, 501, 510
Calutrons, 119-20, 122, 132-33, 136
Cahert, Maj. Horace K., 256, 258, 282, 286
Campbell, Sir Ronald I., 305
Canada
joint control of Congo ore, 296, 298
ore resources, 25, 299, 310-12, 314
Canadian atomic project. See Eyergreen.
Canadian Radium and Uranium Corporation, 62,
79, 312
Cannon, Clarence, 274
Cantril. Simeon T., 41 1«, 415
Carbide and Carbon Chemicals Corporation
barrier fabrication, 151, 156
labor activities at, 372. 374, 376
operation of gaseous diffusion plant, 106, 165-67,
170, 398,418, 593
See also Union Carbide and Carbon Corporation.
Carnegie Institution, 8, 24, 36, 173, 487
Carnotite ores, 311, 314
Carpenter, Walter S., Jr., 98-99, 337
Carteret, NJ.. 133
Casablanca meeting, 233-34
Cascade design, single. 152-53. 155-59. 169
Celle, Germany, 289
Censorship, 277-79
Centrifuge process, 10. 23, 47, 50-51, 71, 149;;
Chadwick, Sir James, 5-6, 8n, 100, 514
Combined Policy Committee, 242«, 243-47
postwar planning, 560-61, 572
Chain reaction, 7-10
pile process. 51-52, 102-04, 190-91
uranium-graphite system, 11, 21, 23, 28
Chalk Riyer, Ontario, 246-47
Chambers Chemical and Dye Works, 202, 315. See
also Du Pont, E. I., de Nemours and Company.
Chemical Warfare Service. 20, 132
Cherwell, Lord (Frederick Lindemann), 235-37,
533, 566
Chevalier, Haakon, 264
Chicago, Milwaukee, St. Paul and Pacific Railroad,
332,405-08,451
Chrysler Corporation, 160, 166, 371
Churchill, Wmston S., 31-32, 298, 518, 533
Anglo-American collaboration, 228, 233-39
postwar planning, 564-66
Quebec Agreement, 240-42
Clark, Joseph P., 374
Clarke, Col. Frederick J., 584«
Clay, Brig. Gen. Lucius D., 57-60. 433-34
Clayton, William L., 530
Clifton Products, Inc., 594-95
Clmch River, Tenn., 47, 71. 78, 160-61. 320«, 390,
433, 442
Clinton, Tenn., 78, 179, 204, 326, 433
Chnton Engineer Works, 78-79, 91, 128, 576, 590
Army-Du Pont cooperation at, 206
atomic communities, 432-48
communications and transportation at, 394-99,
401-05, 408
electrical power for, 380-82, 386, 388-91
health program at, 415-16. 418-19. 421-24
labor shortage at, 351-54
labor relations at, 372-74
labor turnover and absenteeism at, 363-66
land acquisition for, 322-28
plant construction at, 130, 134-40, 159-65,
179-80, 205-08, 580-81, 585, 593
plant operation at, 140-48, 165-71,
180-83, 208-10
safety program at, 427-30
site selection for, 78-79, 435-40
work stoppages at, 370-71, 375-76
Clinton Home Building. 437
Clinton Laboratories. 200, 350, 544
construction of, 204-08
medical research at. 415
operation of. 208-10. .583, 591, .594
See also Metallurgical Project.
Cockcroft, Sir John D.. 5-6, 246-47
"Codes of Wartime Practices for the .American Press
and .American Broadcasters." 277
Cohen. Karl P.. 150. 152. 177
Collins, Li. Col. John K.. 352-53. 365
Colorado Plateau. 8. 80. 31 1-12. 314
646
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Columbia River, Wash., 110-11, 210. 212, 215. 332,
405, 450, 455-56, 460. 478
Columbia University, 27-28, 415
barrier fabrication, 154-57
gaseous diffusion research, 105, 149-50, 153-54,
159
Combined Development Trust, 90ri, 571, 599
foreign ore acquisition, 286. 302-06, 573
joint control of Congo ore, 298-301
legality of, 297-98
Combined Policv Committee, 90n, 239, 241-43,
245-47, 252
Anglo-American cooperation, 571-73
foreign ore acquisition. 296. 299-300. 303. 572-
73
patent problems, 247-48
technical subcommittee on interchange, 242-47
Communications, 394-97
Community management
at Hanford and Richland. 460-64
at Los Alamos, 474-77
at Oak Ridge, 443-48
Compartmentalization policy, 410
and Congress, 272-74
at Los Alamos Laboratory, 491, 495
for safeguarding military information, 268-72
Composite Group, 509th, 521-24, 526-28, 534.
536. 538
Compton. Arthur H.. 44. 62, 271, 275, 350, 509,
583«
chain reaction, 102-03
development of atomic energy program, 30, 34,
36, 38
establishment of Los Alamos. 83-84, 86-87
interchange arrangements with British, 243, 246
pile process, 185, 190, 194-97, 221
Plutonium project, 47, 51-52, 95-101, 199-200
plutonium semiworks, 1 1 1-14, 208
postwar planning, 556, 563, 574, 589
Compton. Karl T.. 530-33
Conant. James B., 28, 118, 261, 284. 350
Anglo-American collaboration, 227, 230-35, 239-
40
Army control of atomic program. 73. 77
bomb development. 503, 506-07, 509-10, 513-
14, 516
Combined Policy Committee, 241-42, 244, 246
establishment of Los Alamos, 83, 86-87. 467
establishment of Manhattan District. 44-45
Interim Committee, 530, 532
isotope separation processes, 36-39
liquid thermal diffusion process, 174, 177
Los Alamos weapon program, 486, 490, 494, 496.
501
plutonium project. 97-101, 1 14
postwar planning, 563, 565-67, 569, 573-76
prioritv ratings, 58-59, 61
Smyih Report, 556, 558. 560-61
Top Policv Group. 3 1 . 33-34
Condon, Edward U., 271, 492, 577
Conklin, PYederick R., 146
Connally. Tom. 577
Consodine. Lt. Col. William A., 298, 555
Consolidated Mining and Smelting Companv, 47.
49. 581
Contractor poHcies, 275-76, 370-71, 417-18, 428.
461
Contractor war claims. 594-95
Cook. Walter W.. 476
Cook County Forest Preserve. 111., 47, 68
Coolants, 190-93, 212, 215
Copper, 61, 66
Cornelius, Maj. William P., 161
Cornell University, 27, 590
Corps of Engineers. See Engineers. Corps of.
Counterintelligence Corps Detachment. 256. 260-
68, 272
Counterintelligence operations. 255-57. 259-63
Craig, General Malin, 519/(
Creedon. Frank R.. 137
Crenshaw. Lt. Col. Thomas T.. 53, 64, 71, 1 18,
307-08, 317-18,437
Cyclotrons, 35, 52, 86, 119, 122, 583
Cyclotrons, destruction of Japanese. 585-88
Dahlgren, Va., 508
Dale Hollow Dam and Reservoir. Tenn.. 320
Dalton, John, 3
Davalos. Capt. Samuel P., 478. 500
Davis. Clifford C, 325
Davis. Laurence W., 354
Dav, H.J.. 201
Decatur, 111., 370-71, 376
Declaration of Trust. See Agreement and Declaration
of Trust.
Deep Water, NJ., 202, 315
Defense Plant Corporation, 133
Delimitations Agreement, 255
Dennison, David M., 528
Department of Agriculture, 27, 324, 329
Department of Interior, 380
Department of Justice, 322. 325. 333, 336-38, 341-
42
Department of Labor, 427
Department of State, 568, 571, 573, 575. 599
Department of the Treasury. 67. 301
Derry. Maj. John A.. 520, 528
Descartes, Rene, 3
Desert training area (Army), near Rue, Calif., 478n
de Severskv, Maj. Alexander, .545. 548-50
de Silva. Lt. Col. Peer. 527
Diebner. Kurt. 290
Dill. Field Marshal Sir John. 241-43
Division of Military Application. AEC, 598
Doan, Richard L., 318
Donner Laboratory. 118, 122. See also University of
California (Berkeley).
DSM (Development of Substitute Materials)
project, 43-44, 67, 71
INDEX
647
Dudlev, Maj.John H.. 84, 328
Dunning, John R., 8«, 10, 30, 51, 150
Du Pont, E. I., de Nemours and Company, 64, 104,
154,371
Chambers C.hemical and Dye Works, 202, 315
Clinton Engineer Works
semiworks construction at, 204-08
Oak Ridge housing at, 441-42
Engineering Department, 199, 206
feed materials production, 314-17
Hanford Engineer Works
Army collaboration at, 202-04
community construction at, 452-59
community management at, 460-63
plant construction at, 211-18, 352, 354
plant operation at, 219-22, 391-92, 591-93
safety and health programs at, 413, 420, 424,
428
site selection for, 109-10, 450-51
transportation and communications at, 395-
96, 398-99, 40 1h. 403, 406-07
Metallurgical Laboratory collaboration, 194-97,
452, 454
Metallurgical Project collaboration, 203-04
Plutonium project, 96-99, 101, 105-06, 108-12,
114, 190-94, 198-99, 210
TNX Division, 113, 198-99, 202-03, 210, 217
Durand and Sons, A. A., 454-455
East Fork Valley, Tenn., 434
Eastman, Joseph T., 408
Eastman Kodak Laboratories, 119«
East Town, CEW, 435-36, 439, 443
East Village, CEW, 436, 439, 458
Echols, Maj. Gen. Oliver P., 520
Eden, Anthony, 235
Einstein, Albert, 6, 13-14, 21, 23
Eisenhower, General Dwight D., 284, 297, 584
Eldorado Gold Mines, Ltd., 8, 25, 62, 64, 79-80,
296/(, 311
Eldorado Mining and Refining Company, 308, 310-
311,313-14
Electric power, 377, 393
contracts and agreements for, 386-88
distribution of
at Clinton Engineer Works, 388-91
at Hanford Engineer Works, 391-93
requirements and sources of, 377-82, 385, 388
Electromagnetic (V-12) process, 10, 34-35, 37, 71,
104-05, 117-18, 176-77
Army administration, 118-26
construction procurement, 130-33
failure of great magnets, 266-67
hazards control program, 418-19
plant construction, 130, 134-40
plant design and engineering, 126-29
plant operation, 140-48, 580
research and development, 50-53, 1 19-20
Electromagnetic (¥-12) process — Continued
War Department contracts, 120-23, 126, 134,
140, 145
Elcctio Metallurgical Company, 64, 310, 316-17
Elliott Company, 154
Engel, Albert J., 273-74
Engineer Combat Battalion, 1269th (less Company
B), 290
Engineers, Corps of, 40-41, 89
Engineers offices
Beverly Area, 308, 310
Boston Area, 127, 130, 434
California Area, 53, 64, 118
Chicago Area, 68, 185-87, 201-02
CUnton Area, 200-201, 346, 368, 395-96
Colorado Area, 308
Hanford Area, 200-201, 457, 463
Iowa Area, 308, 310
Los Angeles Area, 499
Madison Square Area, 91, 143, 308, 312-14, 316-
18,416, 595
Murray Hill Area, 294-95, 308
New York Area, 91, 133, 151, 160, 166
Santa Fe Area, 466
St. Louis Area, 308, 310
Tonawanda Area, 308, 310
Wilmington Area, 201-02, 308, 310
Enlisted Reserve Corps, 354, 359
Enola Gay (B-29), 536-37
Espionage. See Security.
Espionage Act, 261, 577
Ether process, 62
European Theater of Operations, 280
Evans, R. Monte, 199
Evans, Maj. Thomas J., Jr., 178
Evergreen (code name for Canadian atomic
project), 246-47
Expert Tool and Die Company, 508
Farm Security Administration, 323
Farrell, Brig. Gen. Thomas F.
bombing of Japan, 528, 534-35, 538, 540, 542-
44, 549
problems at CEW, 147-48
Project Trinity preparations, 511-12, 514-16
"Fat Man," 508,' 522. 527, 536, 538, 540-41
Federal Bureau of Investigation, 255
Federal Prison Industries, 334
Federation of Architects, Engineers, Chemists, and
Technicians (CIO), 264
Federation of Atomic Scientists, 577
Feed materials program
organization of, 307-10
procurement for, 310-14
production of, 314-17
quality control, 317-18
Feis, Herbert, 65
Pelbeck, George T., 165
648
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Fercleve Corporation, 180-83, 374, 418
Ferguson, H. K., Company, 178-80
Fermi, Enrico, 1 13, 531
atomic energy research, 6-7, 8«, 9-12, 21-24, 30
bomb development, 488, 503«, 509
chain reaction, 21, 23, 102-04
pile process, 184h, 190-92, 194, 221
Perry, Capt. John L., 416
Fidler, Capt. Harold A., 118, 122-23, 125-26
Field Artillery Armory, 124th, 186
Fifth Army, 28 1
Fine, PaulC, 558
Finletter, Thomas K., 65
First War Powers Act of 1941, 430
Fisher, Col. William P., 528
Flaherty, Lt. (jg.) JohnJ., 374
Fontana Dam, N.C., 381
Ford, Bacon, and Davis, 161, 163, 166, 442
Foreign intelligence operations. See Alsos mission.
Fort Loudoun Dam, Tenn., 390-91
Foster and Creighton, 437
Fox, Lt. Col. Mark C, 137, 178, 180
Franck, James, 272, 532-33
Franck report, 532-33
Franklin County, Wash., 1 10, 332
Franklin Institute, 415
Frazier, Brig. Gen. Thomas A., 279
French repatriated scientists, 248-52
Friedell, Lt. Col. Hymer L., 411-12, 415, 544
Frijoles Canyon, N.Mex., 469
Frijoles Lodge (near Los Alamos), 469
Frisch, Otto R., 7, 290
Fuchs, Klaus, 266
Fukushmia, Japan, 528
Fuller Lodge (Los Alamos), 471
Funding
for Combined Development Trust, 301-02
for electromagnetic process, 121-23
for Manhattan Project, 49-50, 56-57, 115-16,
272-74, 590
for NDRC-OSRD program, 22, 24-25, 38-39
Furman, Maj. Robert R., 282, 286, 536, 544
Fusion bomb development, 503?!
Gable Mountain, Wash., Ill, 331 «
Galileo, 3
Gallaher Bridge Road, Tenn., 403-04
Gamble Valley, CEW, 441
Gary, Tom C, 101
Gaseous diffusion (K-25) process, 149-51, 171
Army administration, 149-50
extension plant (K-27), 390-91, 581, 593
plant construction, 159-65
plant design, 152-59
plant operation, 165-71, 580-81, 593
research and development
barrier. 154-57
by British scientists, 10, 29-30, 35, 153, 155-
56, 230-31
Gaseous diffusion (K-25) process — Continued
research and development — Continued
at Columbia and Kellex, 10, 34, 36, 38, 101,
104, 149-50, 153-55, 157, 159
General Advisory Committee, AEC, 578
General American Transportation Company, 313
General Chemical, 314
General Electric Company, 129-30, 592
George, Lt. Col. Warren, 132, 135
Gerlach, Walther, 290
Germany
Alsos missions against, 280-82, 285-91
Groves's concern about, 509«
intelligence information on, 253
interest in heavy water, 23, 66
interest in nuclear research, 12-14, 23-24, 27,
253, 280
special intelligence activities against, 282-85
U.S. race with, 35-39
Giles, Lt. Gen. Barney McK., 524
Giroux, Carl H., 1 10, 380, 382
GOCO plants, 370, 373-74
Goettingen, Germany, 289
Goldschmidt, Bertrand, 249-50
Goudsmit, Samuel A., 285-86, 290
Grafton, Capt. James F., 68, 186, 201
Graham's Law, 152
Grand Coulee Dam, Wash., 1 10, 379«, 381, 392
Grand Junction, Colo., 308, 595
Grant County, Wash., 1 10, 332
Graves, George, 199
Great Bear Lake, Canada, 8, 31 1-12
Great Britain
proposed international control measures, 564-67,
570-73
raw materials acquisition, 295-96, 303-06
See also British scientists; Anglo-American
collaboration.
Great Northern Railroad, 407
Great Sand Dunes National Monument, Colo., 478«
Green, William, 373
Green salt, processing of, 315-16
Greenewalt, Crawford H.
pile process, 195, 199, 203-05, 221-22
plutonmm project, 100-101, 104, 112
Greenglass, David, 266
Gross, Maj. Gen. Charles P., 80
Groves, Maj. Gen. Leslie R., 41, 55, 74«, 79, 103,427
Alsos mission, 280-89, 291
Anglo-American collaboration, 227, 229-31, 233,
240
bombing of Japan, 519-21, 523-24. 526-27, 533-
34, 537«, 538, 541-43
bombing targets, 528-30, 532
CEW community development, 433-34, 443-44
communications and transportation systems, 396,
403-04, 407-08
contract negotiations, 105-07, 166, 443-44, 591-
92
destruction of Japanese cyclotrons, 587-88
INDEX
649
Groves, Maj. Gen. Leslie R. — (^onlinued
development of the bomb, 503-04, 50(5-07, 509-
10
electric power procurement, 377, 380-83, 385,
387
electromagnetic process, 118, 125-26, 128-29,
134-36, 138, 145-46
establishment of Los Alamos, 83-87
French repatriated scientists, 249-52
gaseous diflusion plant, 155-57, 159, 165, 171
health programs, 411, 420-21
HEW communitv development, 453, 455, 457,
461-62
interchange with British, 243-47
liquid thermal diffusion process, 174-78, 180-81
Los Alamos Laboratory administration, 485-86,
489-92, 494-96, 499-501
Los Alamos community, 467, 469, 475
Manhattan Project, organization and funding of,
73-77, 89-90, 115, 588-90
manpower conservation, 364, 370, 372-74, 376
manpower procurement, 347-54, 356, 358, 361-
62
Oppenheimer security clearance, 261-62
ore exploration and joint control of, 293, 296,
298-306
pile process, 188-91, 194, 196-97
plutonium project organization, 96-101
Plutonium production, 198, 202-03, 206, 208,
210, 220-23
postwar policy planning, 563, 569, 571-75, 577
press releases, 554-55
priority ratings, 61, 81-82
production operations, postwar, 579-82, 584,
591-95
Project Trinitv, 511-17
securitv systems, 256-58, 260, 263-64, 266-68,
270-72, 274, 277-78
site selection, 47, 69-70, 78-79, 83-88, 108-11,
434
Smyth Report, 556-61
transfer of Manhattan Project to AEC, 597-601
Guam, 524, 534, 538
Guarin, Maj. Paul L., 294, 304-05
Gueron, Jules, 249-50
Gun-assemblv method, 489
Gun-tvpe bomb, 504-06, 508-10, 520
Gunn, Ross, 12, 27-28, 172-73
Gunnison Housing, 437
Hadden, Gavin, 341
Hahn, Otto, 7, 8/;. 13, 290
Haigerloch, Gcrmanv, 290
Halifax, Lord, 572
Ham, Maj. R. G., 282
Hambro, Sir Gharles J., 299-300
Hamilton,]. D., \2\n
Hamilton Field, Galif., 536, 544
Handv, General Thomas T., 537/(. 541
Hanford, Wash., 110, 114-15, 211, 332, 339-41,
391-92, 450-51, 453, 460-62
Hanford Engineer Works, 91, 267, 274, 278
Armv-Du Pont administration of, 202-04, 210-12,
214, 216-17
atomic communities, 450-64
communications and transportation at, 394, 396-
99,401-02,404-09
electrical power for, 381-82, 387-88, 391-93
health program at, 420, 424
labor shortage at, 214, 216, 218, 351-54
labor turnover and absenteeism at, 363-66, 370
land acquisition for, 331-41
plant construction at, 210-18
plant operation at, 219-23, 580-81, .585, 592-93
safety program at, 428-29
work stoppages and union activities at, 370, 375
Happy Valley, GEW, 442
Harman, Gol. John M., 86-87, 328-29, 486-87, 497
Harmon, Lt. Gen. Millard F., 524
Harriman, Tenn., 320
Harrington, Willis, 98
Harrison, Brig. Gen. Eugene L., 290
Harrison, George L., 251, 299, 302
bombing of Japan, 513, 517, 530, 533
postwar planning, 560-61, 568-69, 571
Harshaw Chemical Company, 168, 310, 314, 316
Hart, Thomas C., 577
Harvard University, 27, 590
Hawkins, David, 494«
Health program, 410-12
clinical medicine services, 420-26
industrial medicine research, 416-20
medical research, 414-16
organization of, 412-14
Heavv water (P-9), 11, 23, 29, 34-35, 51
British interchange on, 229, 231, 235
and Canadian project, 246-47
as a coolant, 190-91
production of, 58-59, 61, 66-67, 72
research, 196-97
Hechingen, Germany, 287, 290
Heisenberg, Werner, 8/;, 290-91
Helium, 312-13
Hempelman, Louis H., 416-17
Hercules Powder Company, 508
Hernandez, Clinton N., 446
Hickenlooper, Bourke B., 577
Hilberrv, Norman, 98, 103, 113-14, 200, 222
Hill, Capt. Thomas B., 526
Hirohito, Emperor, 542
Hiroshima, Japan, 537-38
bombing of, 537-38
survey teams at, 544-45, 548
Hitler, Adolf, 280
Hobcrg, Maj. Henrv (i., 446
Hodgson, Lt. Col. John S., 137, 139, 447
Holmes, Hal. 336
Hooker Electrochemical Company. 166. 310, 314.
371
650
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Hooper, Rear Adm. Stanford C, 12
Hoover Dam, Ariz., 1 10
Hoover, Comdr. Gilbert C, 20-22, 24
Hopkins, Harry, 233-37
Horb, Germany, 290
Houdaille-Hershey Corporation, 156-57, 160,371
Hough. Maj. Benjamin K.,Jr., 127, 150
House committees. See U.S. Congress, House of
Representatives.
Housing
at Clinton Engineer Works, 435-42
at Hanford Engineer Works, 455, 457-60, 462
at Los Alamos, 468-71. 475, 477
Howard, Nathaniel R.. 278
Howe, Clarence D., 241-42
Hubbard, Jack M., 515
Huffman, J. R., 247
Hughes, Arthur L., 492
Hull, Cordell, 297
Hull, Lt. Gen. John E., 519«
Hutchins, Robert Maynard, 115
Hyde Park
aide-memoire, 565-66, 570
summit meetings, 227-28, 241, 564-65
Implosion bomb. 489. 504. 506-10. 512, 516-17,
519-21
Imrie, Capt. Mathew, 476
Indianapolis, 536
Industrial hazards. 416-19
Industrial Personnel Division. ASF. 348, 351
Institute for Physical and Chemical Research,
Tokyo, 586
Insurance program, 430-31
Interchange, Anglo-American. See Anglo-American
collaboration.
Interchemical Corporation, 151
Interim Committee
composition and function of. 530-33
postwar legislation on atomic energv, 90?i, 568,
574, 576
press releases, 538. 554-56
scientific panel, 531-33, 576
International Association of Chiefs of Police, 428
International Association of Machinists. 374
International Association of Plumbers and Pipe
Fitters, 354
International Brotherhood of Electrical Workers,
372, 374
International Brotherhood of Firemen and Oilers,
372, 374
International Brotherhood of Teamsters, 459
International Nickel Company. 154«, 156
Interstate Commerce Commission, 407, 459
Interstate Roofing Company, 160
Inyokern. Calif, 507
Iowa State College. 27, 64, 193. 316-18, 343, 487,
505
Ismay. Lt. Gen. Sir Hastings L., 284
Isotopes. 5, 8-11. 23. 28-29, 32-33
Iwojima. 526. 535-36
Japan
bombing of Hiroshima, 537-38
bombing of Nagasaki, 538
surrender of, 541-42
See also Atomic bombing of Japan.
Jeffers, William. 407
Jemez Mountains. N.Mex.. 328, 465
Jemez Springs, N.Mex., 84
Jennings, John, Jr., 324-26
Joachimsthal (Jachymov), Czechoslovakia, 283
Johns Hopkins University, 8, 27, 119/1, 126, 145,
314, 590
Johnson, Capt. Allan C, 61, 380-81. 385, 434
Johnson, Edwin C, 575n, 576. 595
Johnson, Herschel V., 305
Johnson. John A., 437
Joint Chiefs of Staff. 82. 586-87
Joint Commission for the Investigation of the
Atomic Bombing of Japan. SCAP. 545
Joint Committee on New Weapons and Equipment,
JCS, 39. 44, 73, 77
Joliot-Curie, Frederic, 8n, 12. 66. 249-50, 252, 286
Jones, J. A., Construction Company
gaseous diffusion plant. 106-07, 160-61. 163-65,
167. 383. 398. 404
Oak Ridge community, 442-43
Jones, Couillan, Thery, and Sylliassen, 454
Jornada del Muerto valley, N.Mex., 465, 478, 516
"Jumbo," 508«, 512
k factor, 190-92
Kadlec, Lt. Col. H. R., 203
Kaiser Wilhelm Institute. Berlin, Germany, 12, 287-
88
Kapitza, Peter, 564n
Keith. Percival C.
Anglo-American collaboration, 233, 243
gaseous diffusion plant, 151, 156, 165. 170-71
Kellex Corporation
barrier R&D, 154-57
gaseous diffusion plant
design of 106, 150-51, 153, 158-59, 170,
383
construction of 160-63, 165-66
Kellev, Maj. Wilbur E., 132. 141. 146-47
Kellogg. M. W., Company. 49. 51. 102, 106. 150-51
Kelly. Joseph A., 312-13
Kennewick, Wash., 456, 460
Kinetic Chemicals, 314
King, Admiral Ernest J., 526, 534
King, William Lvon Mackenzie, 235, 570
Kingston, Tenn., 78, 326
Kingston Demolition Range (Clinton Engineer
Works), 78, 319
INDEX
651
Kirkpatiick, Col. Elmer E.. jr.. 526-27, 534, 536
540, 542, 595
Kiiiland Eield, N.Mex., 408, 581
Kisiiakowskv, George B., 350, 506, 511
Klein, August C, 53, 127, 136
Knolls Atomic Power Laboratory, 592
Knoxville Airport, lenn., 408
Kobe, Japan, 528
Kokura Arsenal, Japan, 529, 536, 538
Kolm, 305
Kowarski. Lew, 8«, 66, 249
Krug,J. A.. 385, 387
Kruger. Willard C, and Associates, 466-68
Kvle, Col. William H., 274, 560
Kyoto, Japan, 529-30
Kyoto Imperial University, Japan, 586
Lancaster (British aircraft), 510«, 520
Land acquisition
Clinton Engineer Works, 319-22
Congressional investigation of, 325-27
cost of, 327-28
local opposition to, 322-24
Hanford Engineer Works, 331-33
condemnation trials for, 336-42
cost of, 342
local opposition to, 334-36
Los Alamos, 328-31
other sites, 342-43
Landrum, C. U., 339
Lansdale, Col. John, Jr., 298, 306
counterintelligence system, 255, 257, 263
Operation Harborage, 289. 341
Lanthanum fluoride, 193-94
L'Arcouest, France, 286
Latimer, W. M., I2\n
Lattice pile, 28, 30
Laurence, William L., 514, 554-55
Lavender, Capt., Robert A., 248
Lawrence, Ernest O., 28, 30, 38, 44, 66, 514, 531,
583, 589
electromagnetic process, 34-35, 47, 52-53, 70,
118-21, 123, 125, 128-29, 138
Los Alamos site selection, 84-85, 87
pile process, 99-101
Leahv, Admiral William D., 561, 564, 565«, 566
Lee, Frank G., 299
Lee. Rear Adm. Willis A., Jr., 44, 77
Leith, Charles K., 299
LeMay. Maj. Gen. Curtis, 526. 534, 536
Lewis, Warren K., 563, 589
liquid thermal diffusion process. 174-77
plutonium project, 101, 197, 490
Lewis reviewing committee, 101-02, 104-05, 117,
149, 174
Lilienthal, David E.. 381, 386, 574, 597-99
Lincoln, Brig. Gen. George A., 519«
Lindau, Germanv, 289
Linde Air Products Company, 151, 160, 310, 314-
16. See also Lhiion Carbide and (Carbon
Corporation.
Liquid thermal diffusion {S-50) process, 31/(, 36
full-scale development of, 174-78
Navy R & D on, 149«, 172-75, 177-78
plant construction, 179-80
plant design, 178-79
plant operation. 180-83, 580
Littell, Norman M., 336-41
"Little Bov." 522. 535-38. See also "Thin Man."
Llewellin. Col.JohnJ.. 241-43. 305
Lockhart, Jack, 554
Los Alamos Laboratory
accidents at, 420«
administrative organization, 491-93
atomic communities, 465-81
censorship at, 278-79
communications and transportation at, 395-98,
400-401, 404, 408
electrical power for, 385, 388
espionage at, 265-66
Groves's efforts at, 485-86, 500-501
health and safety programs at, 416-17, 419-20,
424-26, 428-29
interchange with British scientists, 231, 245
land acquisition for, 328-31
manpower recruitment for, 347-48, 353,
358,487, 501-02
post administration. 496-502
postwar operations, 580-82, 585, 593-94
site selection for, 82-88,478
special reviewing committee, 490-91
technical organization. 493-96
weapon construction at, 507-10
weapon design at, 503-07
weapon planning at, 488-91
weapon testing at, 511-18
Los Alamos Ranch School for Boys, 84, 329,
465-66. 472
Lotz.John R., 55-56,69
Louisville and Nashville Railroad, 397, 404-05, 433
Ludwigshafen, Germany, 288
MacArthur, General Douglas, 530, 534, 543-44,
587-88
Mackenzie, C. J.. 232. 235, 243, 246-47
Maddv. James R., 426-27, 429
Mahon, George H., 274
Maizuru, Japan, 528
Makins, Roger, 560-61. 571-72
Mallinckrodt, Edward, 62
Mallinckrodt Chemical Works, 62, 64. 310. 315-17
Manhattan (code name for American atomic
project), 43-44
Manhattan District, 40-41, 80. 595
administrative organization, 88-91, 256-59,
308, 346-47. 412-13. 420, 437-38
652
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Manhattan District — Continued
and the AEC, 596-97. 600«
area offices. See Engineers offices.
deferment policies, 367-69
establishment of, 41-46
labor relations activities, 363-66, 370-75
and plant operations, 142-43, 150-51, 160, 166
Oak Ridge community development, 434-40,
443, 445-46
Production Control Committee, 169
relations with Los Alamos, 468-69, 477
report on bombing efTects, 545-46
security systems, 254-59, 274-77, 279
Manhattan Project
and atomic energy legislation, 574-78
and the bombing of Japan, 521-23, 543-47, 550
end of, 599-600
funding for, 115-16, 272-74, 590
major installations. See Clinton Engineer Works;
Hanford Engineer Works; Los Alamos
Laboratory.
organization of, 88-92, 588-90
origins of, 19-39
policymaking bodies. See Interim Committee;
Military Policy Committee; Top Policy Group.
postwar operations, 580-85, 588-96
priority ratings for, 80-82
public relations program, 553-62
Soviet interest in, 265-66, 564
Manley.John H., 527, 594
Manpower conservation, 375-76
labor turnover, 363-66
procedures for grievance hearings, 374-75
security, 366-67, 369, 371-72
Selective Service System, 366-69
union activities and work stoppages, 369-76
Manpower procurement, 344-45, 361-62
of civilian employees, 355-57
of industrial labor, 350-55
of military personnel, 357-61
organization for, 345-48
of scientific and technical personnel, 348-50
Marburv, William L., 568
Mariana Islands, 521, 523
Marks, Herbert S., 380-81, 597-98
Marsden, Lt. Col. E. H., 112, 308«
Marshall, General George C, 42, 98, 273, 580
Alsos mission, 280-81, 289
Anglo-American collaboration, 234, 239-41
atomic energv program, 26, 31, 34, 37, 39, 73-74.
76
bombing of Japan, 524, 528, 534, 541, 543
Marshall, Col. James C, 19, 31«, 39, 55-56, 88«,
115, 255, 307, 356,426
electromagnetic program, 118, 128, 133
establishment of Manhattan District, 40-42, 45-46
financing of atomic project, 49-50, 56-57
Oak Ridge community development, 434-35
plutonium program, 96, 113, 185, 194, 205
priority ratings, 57, 59, 61
research and development, 50, 52-53
Marshall, Col. James C. — Continued
site selection, 47, 68-70, 78, 434
Martin, Joseph W.,Jr., 273
Martyn, John W., 587
Massachusetts Institute of Technology, 64, 308,
314,317-18,487,590
Materiel Squadron, 1027th, 521
Matthias, Lt. Col. Franklin T., 276, 375
Hanford Engineer Works
community development, 452-55, 457-60
electrical distribution system, 391-93
land acquisition, 110, 333-34, 336-38, 342
transportation, 405-06, 409
plutonium project. 201-02, 210-21
May, Andrew J., 325, 575
Mav-Johnson bill, 575-77
McCloy, JohnJ.. 378, 567, 573
McCormack, John W., 273
McGrady, Edward, 374
McKee, Robert E., 371, 469, 471, 498
McKellar, Kenneth D., 595
McLeod, Capt. Robert J., 256, 258
McMahon, Brien, 576-77
McMahon bill (Atomic Energy Act of 1946), 577-78
McManama and Company, 455
McMillan, Edwin M., 8«, 84, 100
McNarney, Lt. Gen. Joseph T., 285
McNeil Island Penitentiary, Wash., 334
Mead, James M., 335n
Mead Committee. See U.S. Congress, Senate.
Medical Corps, 413, 416, 422, 425, 544
Meitner, Lise, 7, 290
Menke, Capt. Bernard W., 258
Merritt, Capt. PhiUip L.. 80, 307
Metal Hydrides, Inc., 62, 64, 310, 316-17
Metallurgical Laboratory, 47, 342, 347, 350, 385,
487. 576
chain reaction. 102-03
Du Pont collaboration. 194-97, 452, 454
espionage at, 265
feed materials processing, 313, 317-18
health programs, 4l0n, 415, 419«
pile design and engineering, 185-93
plutonium program, 35-36, 52, 65-66, 72, 86,
95-101. 113. 510. 583. 590. 592
See also Metallurgical Project; University of
Chicago.
Metallurgical Project. 371. 563. 590
Council, 204
Du Pont collaboration, 203-04
plutonium program, 199-200
transfer of physicists, 501
See also Argonne Laboratory; Clinton
Laboratories; Metallurgical Laboratory.
Metals Reserve Corporation, 31 1
Middlesex, N.J., 80
Miles, J. B., 204
Military Advisory Board. 589
Military Appropriations Act of 1944. 1 16
Military Intelligence Service. WD. 255
INDEX
653
Military Liaison Committee, AEC, 578, 597-98
Military Police Company (Aviation), 1395th, 521
Military Folicv Committee, 77, 80, 266, 293, 557,
580
administration of Manhattan Project, 89, 115, 589
Anglo-American collaboration, 227, 231-32, 234-
35, 242-43, 245
bombing mission, 524-526
Hanfoid land acquisition, 335-37
implosion program, 507-08, 510«
Los Alamos, 87, 494
Plutonium project, 99, 105-07, 109, 184-85, 191,
194, 198, 203
postwar policy on atomic energy, 563
production methods, 117, 139
raw materials, 293, 295-96
Millikin, Eugene D., 577
Mills, Rear Adm. Earle W., 563
Mitchell, Dana P., 492
Mohler, Fred L., 21
Monsanto Chemical Company, 210, 508, 544, 591
Moore, Lacey, 406
Moore, Thomas V., 185
Moran, Maj. JohnJ., 166
Morgan, J. E., and Sons, 469, 471
Morgantown Ordnance Works, W\Va., 107-08, 191,
343
Morgenthau, Henry, 67, 302
Morrison-Knudsen Company, 37 1
Moses, Brig. Gen. Raymond G., 44
Mountain States Telephone and Telegraph
Company, 395-96
Munnecke, Wilbur C, 200
Muroc Army Air Field, Calif., 508, 520
Murphree, Eger V., 34, 36, 38, 44, 51, 101
heayy water program, 197
liquid thermal diffusion process, 174-77
Murray, Philip, 373
Nagaoka, Japan, 528
Nagasaki, Japan, 530, 536
bombing of, 538, 540-4 1
survey teams at, 544-46, 548
Nash Building, 150-51, 155
National Academy of Sciences, 30, 32-33
National Bureau of Standards, 21. 23-24, 27, 62,
64-65, 173, 308, 316-18. 419«, 487
National Carbon Company, 65-66, 313
National Defense Research Committee, 26-31, 33-
34, 254, 490, 505
National Electrical Contractors Association, 354
National Homes, 437
National Labor Relations Board, 345, 372-73
National laboratories, 590-91
National Research Council, 253, 345
National Roster of Scientific and Specialized
Personnel, 358, 492
National Safety Council, 428-30
National War Labor Board, 355, 364, 372
Naval Construction Brigade, 6th, 524
Naval Depot, Yorktown, \'a., 508
Naval Gun Factory, Wash., D.C., 505-08
Naval Ordnance Plant, Ccnterline, Mich., 508
Naval F'roving Ground, Dahlgren, Va., 508
Naval Research Laboratory, 12-13, 22, 24, 3 In,
173-74
Naval Technical Mission to Japan, 545
Neddermeyer, Seth H., 506
Nelson, Lt. Col. Curtis A., 501
Nelson, Donald, 59, 81, 381
Neptunium, 28
Netherlands East Indies. 306
Newman, Brig. Gen. James B.,Jr., 544
Newman, James R., 577
New Mexico Power Company, 33 1«. 388
Newton. Isaac. 3
New War Department Building. 42. 89, 597
Nichols, Col. Kenneth D., 42. 46-47. 53. 55, 88,
380. 509, 543
Anglo-American collaboration, 233, 241
electromagnetic construction, 133-36, 139, 146
feed materials program, 307-08
gaseous diffusion plant. 160. 169
Hanford production plant. 109, 218. 220, 592
liquid thermal diffusion process, 174, 177-78, 182
manpower conservation, 369, 374
Oak Ridge community development, 437, 443-44
Plutonium project, 98, 112-14, 185, 194, 202, 209
postwar commitments, 588-89
priority ratings. 57-60
reorganization of atomic project. 75-76
security system. 258
silver procurement, 66-67
site selection. 68. 71
Smyth Report. 559-60
transfer of Manhattan Project to AEC, 598-600
uranium procurement, 62, 65, 79, 292, 295
weapon stockpiling, postwar, 593-94
Nickel barrier, 154-57
Nickel chromium, 312
Nier, Afred O., 10
Niigata, Japan, 529, 540
Niihama, Japan, 528
Nimitz, Admiral Chester W., 524, 526. 535
Nitrogen, 4, 133
Nolan, Capt. James F., 420, 425-26, 536
Norris, Edward, 154-57
Norris Dam, Tenn., 390-91
Norsk Hydro plant, Rjukan, Norway. 23. 66. 280
Norstad. Brig. Gen. Lauris. 524. 528
Northern Pacific Railroad, 405, 407. 460
Norton, William J., 126
Oak Ridge, Tenn.. 79. 88. 201. 361. 382. 389-91,
421-23, 427-30, 435-40, 443-44, 448
Oak Ridge Institute of Nuclear Studies. 591
O'Brien. Col. John J., 78, 110, 324
654
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Octagon Conference, 564
O'Driscoll and Grove, 437
Office of Censorship, 278-79, 514, 554
Office of Defense Transportation, 404-05, 407-08,
459
Offiice of Naval Intelligence, 255, 280
Offiice of Scientific Research and Development, 28,
36-37, 39, 254
Army collaboration, 46-50, 66-67, 69, 71-72
Committee on Scientific Personnel, 345, 349
electromagnetic program, 118, 119«, 120-21
health and safety measures, 410-1 1
and the Manhattan District, 40, 44-47, 49
materials procurement, 292, 307, 315-16
S-I Executive Committee, 77-81
Anglo-American relations, 228-30
electromagnetic process, 117, 126
gaseous diffiision process, 51
liquid thermal diffusion process, 174-75
Manhattan Project administration, 71-72, 89-
90
organization of, 44-46
Plutonium project, 52-53, 96-97, 101, 107
procurement, 58-59, 65-66
S-1 Section, 33-35, 44, 62, 292
Office of Strategic Services, 280
Office of the Surgeon General, 412, 422
Offiice of War Utilities. See Power Division, WPB.
Ohio State University, 151
Ohly,John H., 373
Okinawa, 541
0'Leary,Jean, 89
Oliphant, Marcus L. E., 124, 147, 242«, 243, 245
Olympic Commissary Company, 461
O'Meara, Capt. Paul E., 435, 437
Omura Naval Hospital, Japan, 544
Oolen, Belgium, 25
Operation Crossroads, 594
Operation Harborage, 289-90
Operation Peppermint, 284-85
Oppenheimer,J. Robert, 52, 71, 271, 574
decision to use the bomb, 531-32
electromagnetic process, 128
implosion bomb design, 503, 506-07, 509-15
liquid thermal diffusion process, 175-76
Los Alamos Laboratory
establishment of, 82-84, 86-88
organization of, 491-96, 499-500
postwar personnel attrition, 581-82
recruiting of scientists, 347, 350
weapon planning, 488-91
Los Alamos operating communitv, 466-67, 475,
481
Radiation Laboratory espionage reports, 264
security clearance for, 261-62
Orange oxide, processing of, 315
Oranienburg, Germany, 287-88
Ordnance Department, 23-24, 108, 495
Osaka Imperial University, Japan, 586
Pacific and National Hut, 470
Pacific Power and Light Company, 381-82, 391-93,
451
Pacific Telephone and Telegraph Company, 394,
396
Page, Arthur, 554-55
Pajarito Plateau, N.Mex., 465, 478
Parsons, Lt. Col. William B., 258
Parsons, Rear Adm. William S., 499, 501, 598
bomb development, 504, 506, 508
liquid thermal diffusion process, 175
preparations for atomic bombing, 521, 527, 535-
38
Pasco, Wash., 1 10, 405-06, 456, 460
Pash, Lt. Col. Boris T., 261-62, 281-82, 286, 288-
90
Patent rights, 247-48
Patterson, Robert P., 74, 78, 111, 302, 354-55, 374,
584, 597, 600
electric power requirements, 381, 386-87
land acquisition, 319, 325, 331, 338, 340
Manhattan Project appropriations, 273-74
postwar atomic policy, 570-71, 575, 577
Patterson-Brown Plan, 354
Peabody, A. O., 398
Pearson, Lester B., 571
Pegram, George B., 8«, 12, 24-25, 34-35, 44
Pehrson, G. A., 457-58
Peierls, Sir Rudolph E., 8«, 242n, 243, 245
Penn Salt, 314
Penney, William G., 528
Personnel
for Alsos mission, 281, 285-86
attrition, postwar, 581-85
for Clinton Laboratories, 208
for electromagnetic plant, 141-42
for gaseous diffusion plant, 151, 166-67
for Hanford production plant, 214, 218-19
for Los Alamos, 487, 492-93, 497-98, 501-02
for Manhattan District security force, 258
medical, 412-14, 422, 425
See also Manpower conservation; Manpower
procurement.
Persons, Brig. Gen. William B., 337
Peterson, Maj. Arthur V., 114, 188, 194, 196-97,
201-02, 208-09, 283-84
Philadelphia Navy Yard, 175-76, 594
Physical Review, 14
Pierce Foundation, John B., 435
Pike, Sumner T., 597-98
Pile (X-10) process, 184-85, 419
Army-Du Pont administration, 202-04
chemical separation process design, 193-94
Chnton Laboratories
plant construction, 205-08
plant operation, 208-10, 583, 591, 594
design and engineering for, 184, 187-94
Du Pont-Metallurgical Laboratory collaboration,
194-98
INDEX
655
Pile (X-10) process — Continued
Hanford Engineer Works
plant construction, 212-18
plant operation, 219-23, 581, 585. 592-93
research and development, 51-52, 99,
102-05, 184-85
Plutonium (Pu-238, -240), 28-30, 32-34, 36, 38,
99, 283, 488-90, 504-05, 508-09, 514
Pond, Ashley, 465
Port Hope, Ontario, 62, 64, 79-80, 313-14
Port Richmond, N.V., 65
Postwar Policy Committee, 563-64
Potsdam Conference, 555
Potsdam Declaration, 54 1
Power Division, WPB, 380, 382, 384, 387-88, 597
Prefabricated Engineering Company, 458-59
Press releases. See Manhattan Project, public
relations program.
Price, Byron, 278
Priest Rapids Branch. See Chicago, Milwaukee,
St. Paul and Pacific Railroad.
Priestly, Kenneth, 123
Princeton University, 8, 27-28, 47, 52, 590
barrier corrosion research, 151, 154
feed materials research, 308, 317-18
Priority ratings
for labor, 352-53
for tools and materials, 80-82
for weapon development, 50, 57-61
Prisoner-of-war camps, 537, 547
Procurement, 130-33, 206, 217, 455, 486, 491, 499-
500
of copper, 61, 66
of electric power and equipment, 377-80, 393
of feed materials, 310-14
of graphite, 22-23, 61, 65-66, 312-13
of heavy water, 61, 66
of raw materials. See Raw materials program.
of silver, 66-67, 133
of thorium ore, 292-95, 300, 303, 305-07
of uranium ore, 62, 64-65, 79-80, 286-87, 292-
95, 300, 303, 310-11
Procurement and Assignment Service, 413
Project Alberta, 496, 542
Project Camel, 499, 501, 510
Project Trinity, 496, 503, 58 h/
bomb test, 514-19
establishment of base camp, 478-81
origin of code name, 465«
preparations for, 511-14
"Prospectus on Nucleonics," 563
Provisional Engineer Detachment, 469, 473-74,
497-98. 502, 507
Public Roads Administration, 403-04
Pumps, design of, 157-58
"Pumpkins," 51 1
Purdue University, 86, 1 19w, 126. 145, 314, 487
Purnell, Rear Adm. William R., 77. 174. 3.50, 524,
526. 534
QjLiADRANT Conference, 240-4 1
Quebec Agreement, 241-42, 245, 247, 249
British proposed revision of 570-72
uranium resources, 296h, 299n
Rabi, Isidor I., 488
Racetracks. See Alpha racetracks; Beta racetracks.
Radiation, 3-4, 415-16
Radiation Laboratory, 35, 125, 343, 411n
espionage at, 261, 263-65
research and development, 120-26, 128-29, 138,
141-42, 583
See also University of California (Berkeley).
Radioactive lead, 312-13
Radioactive warfare, 283-84
Radioactivity, 543-44, 547, 562«
Radium, 8, 25, 312-13
Radium Chemical Company, 312
Railroads, 404-08
Ramsey, Norman F., 349
Raw materials program
acquisition in foreign areas, 299-306
international ore exploration, 292-95
joint control of Congo ore, 295-97
Ravburn, Sam, 273-74
Rea, Lt. Col. Charles E., 420
Read, Granville M., 199, 203
Reader's Digest, 548
Real estate branches
Corps of Engineers, 70, 78, 324, 331, 340, 342
Ohio River Division, 70, 320-21, 404
Pacific Division, 331-34
Southwestern Division, 328, 331
Reconstruction Finance Corporation, 31 1«
Redox solvent extraction process, 593«
Revbold, Maj. Gen. Eugene, 19, 40, 42-43, 55, 75,
115, 319, 326
Rice. Calif, 478n
Richards, Maj. Gen. George J., 273
Richland, Wash., 1 10. 212. 332-33. 392, 401, 406,
428. 430. 450-51. 456-60, 462-64
Rickover, Capt. (USN) Hyman G., 596/;
Rjukan (Norway) plant, 280. See also Norsk Hydro
plant.
Road systems, 400-404
Roane-Anderson Company, 371, 427
Oak Ridge community administration, 444-47
operation of CEW communications and
transportation, 397-98, 401, 404
Roane County, Tenn., 70, 78, 320, 326, 403
Roberts, Richard B.. 21
Robins. Brig. Gen. Thomas M.. 41-42. 55. 70. 77.
110
Roentgen. Wilhelm. 4
Roosevelt. Franklin D., 73, 80, 98, 115, 197
Anglo- American collaboration, 31-32, 46, 228-29,
232-33, 236-38, 240, 251
approved briefing congressional leaders, 272-73
656
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Roosevelt, Franklin D. — Continued
control of Congo ore deposits, 297-300
government support of atomic energy program,
13-15, 19, 26, 28, 31-32, 39
Hanford land acquisition, 335-36
Los Alamos security, 494
Navy exclusion from atomic program, 31, 174
postwar planning, 564-66
Qiiebec Agreement, 241-42
Rose, Edwin L., 490
Rosenberg, Ethel and Julius, 265
Rosseli, Maj. Paul F., 438
Rowe, Hartley, 496
Royall, Brig. Gen. Kenneth C, 568-69
Royall-Marburv draft bill, 568-69, 574-75
Ruhofl, Lt. Coi. John R., 146, 589
feed materials program, 307-08, 31 1
uranium procurement, 64-65, 79
Russell, Richard B., 577
Rutherford, Ernest, 4-6
S (Sawmill) site, 507
S-1 Executive Committee. See Office of Scientific
Research and Development.
S-1 Section. 5^^ Office of Scientific Research and
Development.
Sabotage, measures against, 266-67
Sachs, Alexander
Congo ore acquisition, 24-25
government support of atomic program, 13-15,
19-24, 26, 28
Safety program
insurance plans, 430-31
occupational and community aspects, 428-30
organization of 426-28
Salton Sea Naval Air Station, Calif, 521
SAM (Special Alloved Materials) Laboratories, 150,
153-54, 156, i67, 343
Sandia Base. N.Mex., 581, 585, 594, 599
San Luis Valley, Colo., 478«
San Nicolas Island, Calif, 478«
Sapper, Maj. William L., 112, 201-03
Schulman Electrical Company, A. S., 389
Schult Trailers, 437
Schwellenbach, Judge Lewis B., 331, 337, 339-40,
342
Seaborg, Glenn, 99, 173, 185
Secrecy, 26, 44-45, 56
Security
bodyguards, 267-68
censorship, 277-79
Clinton Engineer Works, 447
communications, 395-97
compartmentalization policy, 268-72
counterintelligence program, 255-57, 259-63
espionage activities, 263-66
French repatriated scientists, 249, 252
Hanford Engineer Works, 461, 463
informing Congress, 272-74
Security — Continued
Los Alamos, 474, 480, 491-92, 494-95. 513-14,
517
measures against sabotage, 266-67
organization and administration of 254-59, 274-
76
Selective Service System, 344, 346, 366-69, 376
Senate committees. See U.S. Congress, Senate.
Seneca Ordnance Depot, N.Y., 80
Sengier, Edgar, 25, 64-65, 79-80, 292, 295, 300
Separation methods, 9-1 1, 21, 23. 28-30, 34-37,
193-94. See also by process names.
Service Commands
4th, 395-96
6th, 358
8th, 358, 361,474,497, 502
9th, 396, 408
Service Command Unit. 4817th. 361. 474
Services of Supply, 19, 40, 57, 116«. 358, 486. See
also Army Service Forces.
Shane, Charles D., 492-93
Shasta Dam, Calif, 70, 1 10
Shekerjian, Lt. Col. Haig, 20
Shinkolobwe mine, Belgian Congo, 8, 25, 64, 295-
96, 300
Short, Dewey, 325
Shurcliff, William S., 558
Signal Corps, 377, 395-96, 544
Silver Spring, Md., 508
Simon, Sir Francis E., 242«, 243
Site selection
Chalk River pilot plant, 246-47
Clinton Engineer Works, 78-79, 435-40, 450-51
Hanford Engineer Works, 108-1 1
Los Alamos Laboratory, 82-88, 478
other installations, 46-49, 65-71
Skidmore, Owings and Merrill, 435-36, 438-39. 441
Slotin. Louis. 420«
Smith, Harold D., 34
Smith, Hoffman, and Wright, 458
Smith, Lincoln G., 558
Smith, Capt. Ralph C, 500
Smith, Lt. Gen. Walter Bedell, 284
Smyth, Henry D., 196, 556-63
Smyth Report, 556-61
Snyder, J. Buell, 274
Sobell, Morton, 265
Soda salt, processing of, 314-15
Solberg, Rear Adm. Thorvald A., 563, 598
Somervell, Lt. Gen. Brehon B., 116, 338, 348
establishment of Manhattan District, 42-43
organization of atomic energy program, 74-75, 77
Southern Bell Telephone and Telegraph Company,
396-97
Southern Railway, 320«, 397, 404, 433
Soviet Union
espionage activities, 265-66
postwar atomic explosion, 566«
proposed atomic relations with, 564, 570
Spaak, Paul H., 300
INDEX
657
Spaatz. (General Carl A., 288, 5:}7/(
Sparkman, John, 325
Special Enginet'i Detachment, 141, 1.51, 166, 180-
81, 208, 349, 358-59, 367, 469, 497-98, 502,
507
Special Engineer Detachment (Provisional), 13th,
258
Spedding, Frank H., 145, 185
Speer, Albert, 291
Speer Carbon Company, 65-66, 313
Spokane Army Air Field, Wash., 409
Spokane, Portland, and Seattle Railroad, 405, 407
Spokesman- Review (Spokane, Wash.), 279
Sproul, Robert C, 126
Stadtilm, Germany, 288-89
Standard Oil Development Company, 27, 36, 51,
65, 79. 96
Stanford University, 487
Stark, Admiral Harold R., 26
Staten Island cache, 64-65, 79-80, 292
Stearns, Joyce C", 528
Steel, procurement of, 61, 218
Steel-bomb process, 64
Stettinius, Edward R.,Jr., 306
Stevens, Maj. Wilber A., 500, 507
Stewart, Irvin, 44
Stewart, Lt. Col. Stanley L., 499, 501
Stewart, Tom, 595
Stagg Field, University of Chicago, 103, 194
Stassfurt, Germany, 287
State, Countv, and Municipal Workers of America,
371
Stimson, Henry L., 67, 98, 126, 580
Alsos mission, 280, 289
Anglo-American collaboration, 229, 232, 234,
237-40, 251
atomic energy program, 39, 73, 77
bombing of Japan, 529-30, 532, 537n, 541, 545
briefing congressional leaders, 573-74
Combined Policy Committee, 241-42
deferments, 367-68
establishment of Manhattan District, 45-46
Hanford land acquisition, 335-37
joint control of Congo uranium, 296-98, 300, 302
manpower recruitment, 349, 353-54, 357
postwar planning, 565-68, 570
press release on bombing, 553, 556
priority ratings, 61
Project Trinity, 517-18
Smyth Report, ^m-6\
Top Policv Group, 31, 33-34
Stine, Charles, 98, 100
Stone, Robert S., 200, 410«, 411, 415
Stone and Webster Engineering Corporation, 42,
49. 52, 68-71, 79, 185, 428//
acquisition of feed materials, 307, 31 1
as an AEM, 55-56, .59, 61, 95-97, 99, 106-07
CEW communications and transportation, 396,
398, 404
CEW housing construction, 43.3-37, 439, 441,
443
Stone and Webster Engineering Corporation —
Continued
electromagnetic plant
construction of, 130, 132-37, 139, 389-90
design and engineering of, 124, 126-29
Stowers, Lt. Col. James C, 151, 156, 160, 166
Strasbourg, France, 287, 290
Strassmann, Fritz, 7, 8«, 290
Strauss, Lewis L., 597
Strong. Maj. Gen. George V., 26, 25.5-56. 277, 280-
81
Styer. Maj. Gen. Wilhelm D., 19, 37-38, 46, 59.
206, 381
Combined Policy Committee, 242-43
establishment of Manhattan District, 40, 42-43,45
foreign ore acquisition, 300
manpower procurement, 350, 354, 356
reorganization of atomic energy program, 74-77,
81-82
Sundt Company, M. M.. 398, 466, 468-69, 474
Supreme Headquarters, Allied Expeditionary Force,
289-90
Surplus property, 595
Suzuki, Kantaro, 542
Swanson, Maj. Melvin O., 438
Sweeney, Maj. Charles W., 540
Syracuse District, 19, 42, 356
Szilard, Leo, Sn, 10-11, 190
compartmentalization policy, 270-71
development of atomic energy program, 24, 26
efforts to secure U.S. government support, 12-14
uranium-graphite system, 11, 21-22
Taber, Rep. John, 274
Tailfingen. Germany. 290
Taranto. Italy, 281
Taylor, Hugh S., 47, 49
Taylor, Capt. Thomas W., 438
Technical Detachment, 1st, 521, 527, 535, 542
Technical Service Unit, 9812th. 361. 497-98
Teller. Edward, 8«, 11, 13, 271, 503n
development of atomic energy program, 21-22
Los Alamos weapon program, 487
Tennessee Eastman Corporation, 119«, 126
hazards control program, 418-19
labor relations, 371, 374
operation of electromagnetic plant, 107, 124, 134
140-48, ,398
Tennessee Valley, 55, 71, 78-79
Tennessee Valley Authority, 108
electrical power from, 378-83, 386. 389-91
site selection, 46-47, 68-69, 432
"Thin Man," 508. See also "Little Boy."
Thomas, Charles A., 210, .509, 514, 574. 589
Thomas. Elmer. 273
Thomas, W. I., 177
Thomson, George P., 8«
Thomson, J. J., 4
658
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
Thorium ore. See Procurement, of thorium ore.
Tibbets, Col. Paul W.,Jr., 521, 529, 537-38
Tilley,John N., 199
Tinian, 524, 526-27, 536, 538, 540-44
TNX Division. See Du Pont, E. I., de Nemours and
Company.
Tojo, General Hideki, 542
Tolman, Richard C, 197, 271, 350, 529, 589
Combined Policy Committee, 242-44
liquid thermal diffusion process, 176-77
I.OS Alamos weapon program, 490, 503«, 507,
510, 512-14
postwar planning, 558-60, 563, 574
Top Policy Group, 31. 34-35, 45-46, 80, 89, 232,
267, 296
Toyama, Japan, 528
Trail plant, British Columbia, 47, 53, 58-59, 61, 66-
67, 72, 107, 343, 388, 581
Transportation
air, 408-09
Corps, 377, 398-401, 405
motor vehicles, 400-402
organization for, 399-400
problems of, 397-98
railroads, 404-08
road networks, 402-04
Travancore, India, 305-06
Travis, Maj. James E., 203
Traynor, Maj. Harry S., 45«, 297-98
Trident Conference, 235
Trinity. See Project Trinity.
Tripartite Agreement, 300-301
Troop Carrier Squadron, 320th, 521
Truman, Harry S., 337, 518
appointments to AEC, 596-97
bombing of Japan, 533, 541, 556
domestic control of atomic energy, 575-76, 578
future control of the bomb. 569-74
postwar planning, 561-62
Truman-Attlee-King Declaration, 571, 573
Truman Committee. See U.S. Congress, Senate.
Trytten, M. H., 492
Tube Alloys (code name for British
atomic project), 99, 228-29, 223, 236, 304, 565.
570
Tularosa valley, N.Mex.. 478«
Turner Construction Company, 444
Twaits, Morrison, and Knudsen. 458
Tydings, Millard E., 577
Tyler, Col. Gerald R., 498, 501
Ube. Japan, 528
Underbill, Robert M., 121-23
Uniform Vehicle Code, 429
Union activities, 369-75
Union Carbide and Carbon Corporation, 96, 106,
165, 293. See also Bakelite Corporation; Linde
Air Products Company; Union Mines
Union Carbide and Carbon Corporation — Continued
Development Corporation; United States
Vanadium Corporation.
Union Mines Development Corporation, 293-95,
299«, 303. See also Union Carbide and Carbon
Corporation.
Union Miniere du Haut Katanga, 8, 25, 286, 300-
301, 310. See also African Metals Corporation.
Union Pacific Railroad, 405, 407, 460
United Nations
Article 102 of charter, 571-72
Commission on Atomic Energy, 573-74
United States Army Strategic Air Forces, 288, 530
United States Atomic Energy Commission, 67^;,
342, 376, 578, 591, 596-600
United States Bullion Depository, West Point,
N.Y., 133
United States Employment Service. 141,
351-53. 366
United States Strategic Bombing Survev. 545. 547-
48. 550
United States Vanadium Corporation, 311. See also
Union Carbide and Carbon Corporation.
University of California (Berkeley), 348, 371, 428n,
487,589
Board of Regents, 120
electromagnetic program, 119-23
Los Alamos prime contractor, 86-87, 467-68,
475,486-87, 491,499, 512
nuclear research, 8, 27-28, 52, 83, 185, 193
See also Donner Laboratory; Radiation Laboratory.
University of California (Davis), 1 19, 123
University of Chicago, 68. 86, 121, 590, 594
nuclear research, 27-28. 52. 83
Plutonium program, 185-87, 193-94, 210
plutonium semiworks, 114-15, 398
See also Metallurgical Laboratory.
University of Illinois, 86. 487
University of Minnesota. 27, 86, 487
LIniversity of Pennsylvania, 590
University of Rennes, France, 286
University of Rochester, 41 1-12, 415-16, 421, 487,
544, 590, 594
University of Rome, 282
University of Strasbourg, 287
University of Tennessee, 142, 591
University of Virginia, 23-24, 27, 51
University of Washington. 415
LIniversity of Wisconsin, 86, 487
Uranium (U-233, -234. -235. -238), 8-11. 23-25,
28-29, 32-33
and bomb development, 504-06, 508. 510
British research on. 231. 235
electromagnetic process. 128. 142-44
explosive potential of. 488-89
gaseous diffusion process. 149. 152. 169. 171
Lewis reviewing committee report on. 104-05
liquid thermal diffusion process. 173. 175-77. 182
Uranium, Committee on, 26-28, 253. See also
Uranium, Section on.
INDEX
659
Uranium, Section on, 28, 556. Str also Onict- of
Scientific Research and Development, S-1
Section.
I'ranium ('ommittce. Sir Advisory (>ommitlcc on
L'raniuni.
I'raniuni-graphite system, 1 1, 21, 23, 28
Ihanium hexanuoride, 152, 154, 173, 175
L'ranium ore. See Procurement, of uranium ore.
I'ranium tetrachloride, 143
Uravan, Colo., 376
Urey, Harold C, 24, 26, 30, 34-35, 44, 87, 243, 574
gaseous diffusion process, 34, 36, 38, 51, 101,
150, 155
liquid thermal diffusion process, 174-75
U.S. Congress, 327, 576, 579-80, 590, 595
atomic project briefings, 272-74
hearings on atomic bombings, 548-50
House of Representatives, 273-74, 324, 576, 578
Appropriations Committee, 273-74
Militarv Affairs Committee, 75, 325, 575,
578-79
postwar atomic legislation, 572, 574-78
Senate, 273, 336, 578
Appropriations Committee, 273
Mead Committee, 341
Military Affairs Committee, 575-76
Special Committee on Atomic Energv, 548,
577-80
Truman Committee, 279, 335, 337
U.S. Navy, 12-13, 22, 24, 31«, 172-75, 177-78, 255,
524, 535, 545, 576, 594«
X'anadium, 31 1
\'anadium Corporation of America, 311
\'ance, Mai. John E., 306
Vanden Bulck, Lt. Col. Charles, 43«, 357. 597-98
\'andenberg, Arthur H., 576-77
Van Fleet, J. R.. 293
\'an Vleck,John H., 490
\'argas, Cetulio, 306
\'entures, Ltd., 299«
\'itro Manufacturing Company, 308, 314
\'olcano Islands, 540
\'olpe, 1st Lt., Joseph, Jr., 278, 306, 597-98
von Halban, Hans, 8«, 66, 235, 243, 246-47, 249-
50
von Neumann, John, 506, 528
Wabash River Ordnance Works. Ind,, 108, 191. 343
Wakavama, Japan, 528
Wallace, Henry A., 31, 34, 39, 46, 234
Wallgren, Mon C, 336-37
Walton, E. T. S., 5-6
War Department Miscellaneous Group, 521
War Manpower Commission, 351-54, 364-65, 370,
461
War Production Board
electric power requirements, 380-83, 387-88, 393
priorities, 57, 353
procurement, 67, 80
Warren, Col. Stafford L., 91/;, 594
bombing survey team, 544, 549-50
health program, 411-15, 421, 425-26
Washington Liaison Office, 81-82, 89, 91, 130, 178,
180/(, 310, 349, 377, 380
Washington Post. 279
Watson, Maj. Gen. Edwin M., 19-20, 22-23
Watson, William W., 247
Watts Bar Dam, Tenn., 390
Waymack, William W., 597
Weapon development and testing. See Los Alamos
Laboratory.
Weaver, Brig. Gen. Theron D., 60, 81-82
Webster, W. L., 248
Wegener, A. L., 374
Weil, George, 103-04
Weisskopf Victor, 12
Welsh, Col. Arthur B., 412
Wendover Field, Utah, 507, 521-22, 526-27, 581
Wensel, H. T., 44
Wesson, Maj. Gen. Charles M., 23
Western Defense Command, 261, 263-64
Western Union Company, 397
Westinghouse Electric and Manufacturing Company,
62, 64, 124, 129-30, 153
Westinghouse Research Laboratories, 51, 487
West Stands. See Stagg Field, University of
California.
Wheeler, John A., 8n, 203, 589
Whitaker, Martin D., 1 12, 1 14, 208, 210
White, Wallace H., 273
White Bluffs, Wash., 1 10, 211-12, 332, 392, 405,
450-51,456
Wickard, Claude, 329
Wigner, Eugene
nuclear research, 8«, 11, 13, 21-22, 24
pile process, 190, 192, 195-97
Wigner Effect, 592
Williams, Roger, 101, 113-14, 199, 203, 221
Williams, Maj. Walter J., 137
Wilson, Carroll L., 597-98, 600
Wilson, E. Bright, Jr., 197.490
Wilson, Robert R., 528
Wilson, Col. Roscoe C, 520-21
Winant, John G.. 249-51, 297-98, 300
Winkleman, D. W., Company, 160
Winne, Harry A., 574
Women's Armv Auxiliary Corps, 358
Women's Army Corps, 277, 357-58, 397, 473
Woolworth Building, 151
Work stoppages and absenteeism, 206, 370-71,
375-76
Wright, Brig. Gen. Boykin C, 298
Wuerttemberg, Germany, 287, 289
660
MANHATTAN: THE ARMY AND THE ATOMIC BOMB
XAX development plant, 134-35, 142
Xenon, 221-22
Yancey, E. B., 199
Yokkaichi, Japan, 528
Yontan Field, Okinawa, 541
Yakima, Wash., 110, 337-39, 402
Yakima County, Wash., 1 10
Yaku-shima, Japan, 540
Yale University, 308, 315
Zinn, Walter, 8n
Zirconium oxide, 133
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