SE quantity of AEC unclas sifiied or blueprints will be brought sideration. 9( ET technical data in the form of drawings to the Commission for individual con- During the above discussion Messrs. Fine, Platt, and Wailer entered the meeting and at this point Messrs. Warren, Johnson) Fleury~ and Straus cr left. 13 ● ilEC 426 - Initiator Program ,’ .,’ ,.. ,. .. ,’. , .:. ,. ,!. . . ;.’. Under consideration was a report (AEC 426) concerning projected future requirements for initiators and their critical materials, and means for their production. Mr. Boyer pointed out that the present report did not recommend any change in the principle of parity between cores and initiators, though study would be given to the subject. In re spons c to questions from the Commissioners, Mr. Williams commented on the limitations of the Brookhaven reactor for emergency or supplemental production of initiator material, and on other possible alternate producers. He pointed out that relief either from development of substitute materials or from successful operation of the Mk. I or Mk. IV For a relatively nominal sum, however, a high MTA was uncertain, performance reactor optimized for production of Po-21O could be designed for construction at a location separate from other production afford indispensable insurance. He facilities and bombproof, and thus .,. . .... ... ,. pointed out that, despite progress made in work on this problem for several years, the production of initiator materials still remained a particularly vulnerable point and he urged that the Commission authorize having design of such a high performance reactor completed and ready for any need. Mr. Wcil said that design of the CF-5 reactor was WC1l advanced and that the principle change for design of a production adaptation would be in the shield. Early selection of a site was necessary, however, since the site would affect the design. hLr. Smyth said that he did not think construction of such a reactor should be authorized independent of consideration of the results of the other studies recommended in AEC 426. Before these studies were completed and brought together in a systems study of requirements for initiator materials and ways of pr educing thcm, however, plans for such were a high performance reactor as an alternate means of production needed for security. He proposed that the Commission decision on the present paper recognize that the primary purpose of the IWatcrials Testing “ 168- .’