after 1957 a few hundred tons per year would be needed, Several of those present commented that this was a more favorable situation than the one with respect to prahium ores, Dr. Rabi inguired from Dr, Bradbury what arguments were against iti None appeared, Dr. Bradbury said that the strongest argument for — U-233 was the increased degree of flexibility in weapon design, He would still advocate the proposal even if a bright idea developed which , would greatly reduce the predetonation probability with plutonium, ‘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, Rabi's on possible effects on the Livermore prograu he saldit wouldive ¢them| another parameter to work with, 8etiampia “Wats Gonetderation wasalreadyintke’exchange waver” Mr, Whitman sald it would be a good thing to get a secondraw material into the program, He also felt that the reactor program would 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 developing the technology of separating Pu-240 from high g/T plutonium. felt, however, that this was not too Jakely. It was: | Dr, Rabi said his view was that the proposed step may be a.geod thing but is not tkelyAe be of practicalsignificance in thethermo-, hs Aaapennieieeh nuclear program. | oN CATEiE in fe sa Masa Ee pat - £, Ma)

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