(CC | eeeENT ye Peeryror rer atte £oy% -16- : a * ae after 1957 .ep: year would be needed, Several of those present commented that this was a more favorable situation than the one with respect to uranium ores, . iti Dr. Rabi Anguired from Dr, Bradbury what arguments were against None appeared, Dr. Bradbury said that the strongest argument for U-233 was the increased degree of flexibility in weapon design. He would sti21 advocate the proposal even if a brig + idea developed which would greatly reduce the The neutrons were not being thrown away; the added cost is not great; the weapon design and ore supply advantages are very considerable. To a question of Dr, Rabits on possible effects on the Livermore progra he said it would give them another parameter to.work with, Dr. Rabi asked whether iniB larger criticalmass would introduce Dr. Hark said this consideration was already in the exchange rate. . Mr. Whitman said it would be a good thing to get a second raw material into the program. He also felt that the reactor program rculd probably benefit from this extension of technology. Dr. Libby, who said he had been searching for an objection to schedule B, observed that it might remove the pressure from Ceveloping the technology of separating Pu-240 from high g/T plutonium. felt, however, that this was not too likely. It was . Dr, Rabi said his view was that the proposed step may be a gccd thing but is not likely to be of practical significance in the thermsnuclear program, There will continue to be every incentive to improve DOE ARCHIVES Go