‘ - erder to accomplish this progvam, Les Alamos recommended thet. CASTLE be held in the Spring of 1954.) Jee La, Ede} Ipy letter of January 2, 1953 (ARC 597/7) the Commission proposed to the MLC that CASTLE be held as early in 1954 as technical progress permitted, and by letter dated January 19, 1953 (AEC 597/11) the MLC advised of Department of Defense coneurrence. Ook i. | The latter would have a better chance of suecess and would give a higher yield, but would be dependent on lithium-6 production, Meanwhile, in the Soring and Summer of 1953, the Air Force indicated the importance of reducing the weight of thermonuclear weapons for delivery by the B-“7. a medium benber being produced in large numbers, and for delivery by the Hustler, a new medium bomber under develop- - 4. Enelosure "A"

Select target paragraph3