~f« ine. Commission would not be faced with many problems such as a determination of radiological safety criteria. He expressed particular concern over the proposed underground shots. Dr, Dunning then referred to Mr. Murray's comment on the establishment of 10 roentgens and said that during discussion of this matter by the Advisory Committee on Biology and Medicine, the LCBM had indicated that the National Academy of Science had also arrived at its figures of 10 rocntgens in a 30-year period in an arbitrary manner, Dr, Dunning observed that there was no precise method of measurement in establishing these criteria. In response to a question by Mr. Murray, Dr. Dunning said that the ACBM had discussed this subject and that there was general agreement among its members that the recommended numbers were reasonable. Mr. Strauss asked about the possibilities of conducting ell tests in the Pacific and avoiding the extensive facilities and instrumentation connected with tests. Mr. Fields said that increased costs and time would be involved in conducting all tests in the Pacific. He then commented on the time requfred for constructing additional facilities, organizing the operational supporting groups, and transporting the necessary technical

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