4, Monthly Report to the Commission a. Production Mr, Bloch reviewed progress in the construction of new production facilities and reported on production rates of fissionable materials for the month of May. He discussed with Mr. Libby the question of whether heavy water production would be adequate to meet probable demands if heavy water reactors prove attractive for nuclear power plants. Atthis point Mr. Bloch left the meeting. b. Project Hydra Colonel Beckedorff reviewed the history of - Project Hydra and reported on the development of devices for use of agencies engaged in the detection of fissionable material clandestinely brought into the U. S. With regard to recent incidents involving the possibility of clandestine introduction, he said that the nature of the material in question had not been determined, (See AEC 837%,) c. Military Application Colonel Dishuck reviewed highlights of the weapons program for May. Among other matters he reported that on the basis of information developed at LASL it had been deter- mined that storage requirements for certain weapons could safely be relaxed so that a greater number of weapons could be stored in a given structure, This development would make possible the saving of several hundred thousand dollars in construction costs, The Commissioners made several suggestions concerning possible storage improvements. *See also the memorandum of June ¢@ from Mr, Kelehanto. the General Manager on this subject, a4 -

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