vented In particular, the High Contracting Parties shall prevent the manufacture, production or importation of: (1) all arms, ammunition, explosives, military equip- ment, military stores and" supplies and other implements of war of all-kinds; (2) all fissionable materials for any purpose, except under conditions approved by the High Contracting Parties; (3) all naval vessels of all classes, both surface and submarine, and auxiliary naval craft; (4) all aircraft of all kinds, aviation equipment and devices and equipment for anti-aircraft defence. (e) The establishment, utilization or operation for mil- itary purposes of any of the followinig shall be prevented: all military structures, installations and establishments, including military airfields, sea plane bases and naval bases, military and naval storage depots, permanent and temporary land and coast fortifications, fortresses and other fortified areas; all remaining structures, in- stallations and establishments of this nature shall be destroyed. (f) Under conditions which may be established by the High Contracting Parties the demilitarization and disar- mament required by this Article shall be subject to the fol- lowing exceptions: (1) The formation and employment of such detach- ments of German civil police, and their equipment with such types and quantities of imported small arms as may be essential to the maintenance of public security; (2) the importation of minimum quantities of those items listed in paragraph (d) above, such as explosives or ingredients of explosives which may be essential for purposes of construction, mining, agriculture, or for pther peaceful purpose. 90S