x SE ●ET then discussed with Mr. Graves proposed shots. Nir. Murray and Mr. Salisbury the public relations aspects of conduCtiW3 large shots such a= the 60 kiloton shot at NTS. Mr. Murray =aid that altho-ugh Mr. Libby’s com.ment~ about the conservative nature of the iigures on radiation doses received by individuals in communities in the vicinity of NTS did affect the Commission’s previous position on the transfer of some large shots to the Pacific, he believed this question should be discus seal. Mr. Libby said ‘&at information received after operation PILGRIM on fallout would confirm whether his position on the 10 roentgen figure was correct but that he did not believe there is any possibility that the 10 roentgen figure would be achieved by a single shot. Mr. Graves then commented briefly on faUout figures of previous shots. The Commissioners discussed with General Starbird ‘Ae estimated fallout of the individual shots proposed for Operation PILGRIM. Mr. Libby said that he believed Plan 111as outlined in A EC 944/2 would be satisfactory y for the conduct of Operation PILGRIM. Iwr. Murray said that in view of Mr. Libby’s comments on the conservative nature of estimate= of fallout as well as his questions on transferring some shots to the Pacific,. he would like to resexve his position on AEC 944/2 until he had reviewed the staff paper again. He then asked about the length on the periods set for the tests, and General Starbird discussed the reason for extending the test period from May to October. The Commissioners discussed at length the extended test operation and the possibility of conducting the tesis as a two-phase operation. General S’~rbird commented on the problems of conducting a two-phase test series, and Mr. Libby then commented on the need to compress the one-phase operation. length of the proposed After further discussion, Mr. Libby and Mr. Vance approved the recommendations cf AIZC 944/2, subject to a - 766 -