29. the Gun-type weapons implosion-type. can be mide smaller in diameter than The pequirement for this bomb arose from the desire to have a weapon which could be delivered by small aircraft which couid not carry the smallest implosion-type weapon (Mark 12) under development. However, the priority now given to this model is low since the potential advantages to be gaincd from work on other models are much greater. Develop- ment work on the Mark 8 and Mark 11 may be expected to contribute information of use in the development of ‘the Mark 10. The tentative date for initial stockpiling of this weapon is early 1955. Mark11. — | | m Bot 1) 20. Wind tunnel tests are being made on various con- figurations of the ballistic case. date The scheduled stockpile is early 1955. Mark 12. . The approximate size of this weapon has now been established, the outside diameter to be about 22 inches i <3 >. of 21. , Full scale tests are expected to be conducted at Nevada in the spring and again in the fall of 1952. However, the design of this weapon involves so many variations from carlicr implosion models that first deliveries to the stockpile are not scheduled to be made until October 1953. ~ 1 - FAO Ste (DD Ue BYP SiGRet