Te, coe ee — wenees - 5" 10-15, (The discussion focussed on the number 10, since this seemed to } the Umibation that the Commission was actually considering.) The Committee could bee no technical or safety reasons for fixing on the number 10, . A better policy would be to shoot whatever nunber are nece ssi and practical, appropriate precautions being taken for each shot. | (Appendix B) The Committee next considered the linked subjects of Ee : qistonion quality, and production of materials, Otpleasure that the problem of producing 20 n/g-sec a now seemed less formidable, Dr, Rabi expieesed | ("200 g/T") plutoni=i However, the need for material of this quality had not been demonstrated. Dr. von Neumann pointed out that some quantities of high grade material would continue to be needed as long as there were new weapon designs to be tested, in order to eliminate’ plutonium quality as a factor in the test results, (He referred here to tests necessary in the development of new designs rather than to proof . firings.) (Appendix C, item 2) Greater knowledge and understanding is required on two technical et \ 4 ae pt 2 ws. lproblems: (1) a ene Trae DOE ARCHIVES 14>