2h However, enrichrient now appeare unnecessary as far as tritium is concerned; and the problems may have been solved by the time enriched loading ig used. to make U-233, Dr. Wigner observed that the U-233 program was not very + well settled yet, but that in any case thoriummakes for a little better stability because of the temperature coefficient of the resonance capture, ’ Mr, Whitman mentioned the zero power pile and the production type a pile built specifically for development work at SavannahRiver. He had felt it was a good idea to have these reactors, but had not studied the matter closely. At 2150 pem. Dr. von Neumann left the meeting. “With regard to the question on the boiling water reactor in the pre~ - Boiling Water Reactor meeting letter, Mr. ‘Whitman said ‘that this would be considered in a meeting of ‘the Reactor Subcommittee later in the day. Mr, Whitman mentioned his ‘impression that the K-25 group would like Research on Tsotope separa S2CiH to be asked bythe Commission to increase the scope of its research on methods of isotope separation. This was discussed to some extent, The Committee seemed to feel that. isotope separation research should be encouraged in general, Dr, Libby being the most strongly outspoken pro- ponent of this view. (Appendix C, item 3c) The Chairman next brought up the subject of AEC policy on research Policy on Aliens by foreigners at BNL and UCRL, This had originally been an agenda item for discussion by the General Manager; however, it had been learned that the Commission had reformulated its policy on this subject and a copy of a paper (AEC 89/3) was available. He read portions of this document. yen F

Select target paragraph3