of Soviet research interest in the Separation of the uranium isotopes. The mesh research would seem to confirm the British interpretation of the © use of the nickel mesh which was acquired by the USSR in Large amounts. — There are also reports of3a, bordebrisGotecting statddn located in the Caspian area,| aneHPBOREL a a astaies Dr. Reichardt left at 2310 Delle5: and the5 meeting continued 4in executive session, The Committee returned briefly to the question whether Brookhaven should be devoted entirely to unclassified work, BNL Entirely Unclassified? It was agreed that there wag no basis for a formal comment by the GAC at this time. .It was generally felt that the suggested move was undesirable, both from. the Commission's point of view and from that of the Laboratory. If.the question were to be considered further, the Committee would like.to have a document, e.g. staff paper, in which the proposal .was analyzed, .Knowledge of the attitude of the Laboratory would be an important element in any further considerations, | : -At 2:15 p.m, Dr. Libby returned. The next subject considered was the use of the Nevada Proving Nevada Grounds, - G@ecunds essential to the weapon program, Pr.ving All agreed that the continued use of the proving ground vas Continuation of the test programwas | imperative, otherwise progress.would be stopped in important lines of weapon development. The’ recommendations of the NPG Committee were felt to be sound in general, but with the specific exception of the one which “recommended limitation of the number of shots in any 12~month period to aaa

Select target paragraph3