408647 MAY 1.5 1956 REFER TO AEC 787/31 BASSETT ECT 2 a i see Or porn cf < ge, Bhfas Sy is aye cod Dear Ceneral Loper: ro PA Co So CEou Thies ig in angwer to your letter of April 27, i986, which enclosed material for briefing foreign ebservere at Operation RSDWIM). You state your belief that the material, if it involves Restricted Data, is of a type clearly trenemissible te the United Kingdem and Cenads and request concurrence of the Atomia Energy Commission in the use of the material for briefing the foreign observers. We have reviewed the saterisl you enclosed and have cetersined that Lt does not contain Hestricted Lata relating to the design or fabri- cation of atomic wuapons. We concur in its use for briefing the foreign observers aud believe that a joint detersination by the AEC and DOD under Section lub of the Atanic Energy Act of 195 is not RY —NARA ~ Colltge Pork — REPOSITO Sincerely yours, COLLECTION RG 326, 9l- SP Geert bry BOX No. L2>__(WN 3-326 - 73 -o16) rorpen MR #A 7, Redwing vole IF (Signed) W.F. Libby fsjv Chairmen Honorable Herbert B. Loper ) Chairman, Ailitary Liaison Comnittes to the atomic Energy Commission Q eee 28. S Paso eee ed ce one foeso . cee i 1s . Phi povtorid east tes to tacmatta atanttanyif pFe re he oo.. he Pa Ce eee weve ed COPY FOR THE SECRETARIAT : . , w+ te S08 85 de Ee ay daw, ay ee eal aa 22 ose eee blest oa DOT Ir roscothsasse. A . \ i — tae 3 aS poe . “ ° BEST COPY AVAILAGLE:

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