limited only by requirements as determined by the laboratories and the Division of Military Application. The Advisory Committee - on Biology and Medicine felt that the number of shots should be limited to ten per year with no more than three high yield detona‘tions included in that number. 3. In agreement with the General Advisory Committee, the Advisory Committee on Biology and Medicine stressed the necessity for measures to minimize, on a local and on a national scale, the risks involved in testing at the Nevada Proving Grounds. The Advisory Committee on Biology and Medicine also recommended that prior to detonation of a 50 Kf weapon the safety factor calculated for detonations of 50 KT weapons from 500 foot towers should be verified by detonation of a smaller yield weapon from that height. 4, The Advisory Committee on Biology and Medicine recommended deletion as meaningless the criterion of subparagraph 4(f) cf AEC 141/22, namely, "The number of apparently marginel shots in any year should be limited to a minimum." The Advisory Committee on Biology and Medicine recommendation has been incorporated in Paragraph 6, Appendix "A" of this paper since the sense of the deleted statement is contained in other criteria particularly subparagraphs 5. 6 (c), (dad) and (e). In view of the importance of the weapons development progrem to tne neticonal defense it is considered that the weapons test program should be maintained as flexible as possible to assure accomplishment of military requirements, unwise, therefore, It would be to place an arbitrary limitation on the number of shots to be fired in a given period at the Nevada Proving Grounds, However, the importance of evaluating each shot énd ascertaining that acceptable weather conditions exist prigr.to_ Getonetion ceénnot be over-emphasized. ~~ . BigOe Bes loste poy tea ® Cl" ps