ent 40908 OFFICE OF THE ASSISTANT SECRETARY OF DEFENSE WASHINGTON 25, D. ¢, RESEARCH AND DEVELOPMENT RD-CAE 205/2 September 17, Mr. Lewis L. Strauss, Chairman Atomie Energy Commission 1901 Constitution Avenue Washington 25, D. Cc. Attention: Thru: Bpig. Gen. Kenneth E. Fields, Director Division of Military Application The Chairman, Military Liatson Committee to the Atomic Energy Commission Dear Mr, Strauss: Consideration of the effects of nuclear weapons, part: those with high yields, indicates that radioactive fall-out contémination are among their most important characteristics indeed may be one of the factors governing their use in some situations. It also appears that it may be possible to control tc consideraple extent, by different weapon designs, the relat: amounts of long-lived radioactive products per megaton of tc energy yield. It is understood that the AEC is gathering ir tion as to special materials which could be added or substit enhance or diminish the radioactive contamination, For your information, the Department of Defense is cor the broac espects of the contamination problem as well as tt detailed overational factors which would influence the degre contamination, These studies when combined with the result: your investigation should enable the Department of Defense decide whether or not there is need for high yield weapons \ different contaminating characteristics than those for whict military characteristics are now specified, Cooperation of the AEC is requested in the investigat: this problem, The immediate need is for @ better understan of all the pertinent facts. Sincerely, BEST COPY AVAILABLE my /s/ Donald A, Quarles [ity caer ral oS “RW doe Sg eS joes jo 2 le W ty 2 EP AS “pt o RES Thi defined Its trans BS paces eye aa Ti ed. 8S prohi rohibitec. ; * aa Bivtal’ ty _ noes oui ~

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