‘pected. t The first four devices are being developed at Los Alamos and the latter two at Berkeley, In response to questions from the Commission on the relative importance of the various devices to be. tested, Mr. Graves said that there was a strong technical necessity for tne testing of each of the six devices, but that the Commission must make the determination whether this technical necessity dustifies the expense of an Eniwetok test. He pointed ovt that the IVY Mike yield was greater than predicted py elmost a fector of two and that the behavior of thermonuclear syscems is not well understood, be recuced to four shots, he woud If the CASTLE program had to reccommend testing the ay 3. 621, : mee . sa - could be eliminated with the least harm to the progrem as it is a device which is almost certain to work. The other devices involve many unknowns which cannot be determined by calculation but only by actual full-scale test. He pointed out that he was not qualified to comment on the : . Spots . pr . EnetOY

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