General McCormack pointed out that after having subtracted the quantities of plutonium and U-235 nceded for research, high yield weapons, gun type weapons, and other required weapons for fixed composition, the remaining fissionable material of whatever proportion could all be fabricated into weapons. Accordingly, within reasonable limits, the production ratio at this specific point in time should not be permitted to be a matter of concern. It is with regard to the construction of new plant for future production that it is important to examine the *'ratio’’ question, Z. Fissionable Material Production Program Mr, Dean referred to the letter of May 10, (AEC 387/1) from the Secretary of Defense stating that the fissionable material program should be cxamined from time to time to determine desirable changes. The results of RANGER and GREENHOUSE would be available for review in the near future. Accordingly another review of the Commission’s program could be undertaken. The meeting at Frinceton, June 16 and 17 might be considered a beginning of such a review. The Commission discussed at length the various factors entering into the production program: prospects for ore supply; improved reactor designs to permit processing of feed material depicted to a larger extent or of more economical design in terms of cost or neutron utilization; weapon development prospects; and the prospects for mobile or other specialized power reactors, The Commission’s production program for the future would depend upon an evaluation of all these factors, many with a high degree of unpredictability. 3. Project GABRIEL Mr. Boyer reported that he had requested the Division of Biology and Medicine to review Project GABRIEL (AEC 278, December 12, 1949) and to submit a report with any necessary revisions to the Commission. Roy B. Snapp Secretary Approved by the Commission: June 20, 1951 ~ 245 -