73909 had <a" ee Lmee . June 16, 1953 MEMORANDUM for Mr. Boyer This is with reference to Mr, Zuckert's memorandum to you of June 11 on the sutject of CASTLE, I have tren proceecing on the basis that the scope of the CASTLE Operation would be firmed up some time in September when we mow more of the capabilities of the ADP plant at Oak Ricge and of the specific proposals from Los Alamos and Whitney. In advance of that time I think it would te very useful to discuss the feasibility of the nuxter of shots and the major problems that would arise in executing a CASTIE program of the scope contemplated, I telieve, hevever, that the perscnnel who should be involved in this sort of consiceration shcvid be myself, Ir, Graves, and Gencral Clarkson, enc scecorcingly, if vou agree and if im, Zuckert arvrces, I world arrencs ve fet then together at an al vine after the return from Uniwetok of General Clerkson and Ir. Graves, This would te some tire during July. /s/ K. E. Fieles E E, Fields Brigadier Generel, USA Director of idlitary Arplicaticn ff Mr, gucccrt, If aa agree, we Will Pclicw the procecure suggested ty Gen, Fields, /s/ TB US DOE ARCHIVES RG £23 U.S. ATOMIC ENERGY COMMISSION Cecticn -_ SECRETARIAT To: AAPL -ylder MKA_7 CASTLE._Yelt_