During the discussion of the status of the E!3R 1 at Argonne National Laboratory, Mr. Libby requested that he be furnished with available reports on the problem of bowing of the fuei elements in reactors. Mr. Davis reported that a design study arid evaluation of the British Calder Hall me of reactors was being made in terms of American constx’uction costs and operating conditions by the Atomic International Division of North American Aviation, He added that the November 22, 1956, British Symposium on gas-cooled reactors may be the source of more information on this type of reactor. In response to Mr. Murray’s inquiry concerning the General Dynamics contract, Mr. Davis responded that they were undertaking a study of a lithium-cooled reactor which would produce both tritium and power. He added, however, that the development of this type of reactor had not yet been authorized and that the technology of handling liquid lithium is a limiting factor. Mr. Davis then mentioned the visit oi Sir Roger Makins and Lord Harcourt to the MTR and other facilities at Idaho Falls and added that their main concern was the type of program which Great Britain should follow in developing nuclear power. With reference to the nuclear-powered merchant ship, Mr. Davis reported that a public announcement had been made of the AiZC -Maritime Administration agreement providing fo= a combination passengercargo ship with a pressurized water type reactor. He added that an attempt would be made to keep all data unclassified. Mr. Davis informed the Commissioners that design and specification work would be initiated by the Maritime Administration during October 1956, and that Babcock & Wilcox is begting studies which - 582 -

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