WEAPONS Presidential Determination The President made determinations that cooperation with and communication to the United Kingdom in the following areaswill promote and will not constitute an unreasonable risk to the common defense and security;* pa 1. Information necessary to explore jointly with the United Kingdom varioug. concepts which might lead to the development of a 500- to 600-pound,'§ warhead, 2. Information necessary to explore jointly with the United Kingdom various concepts which might lead to the eeaTah of Warheads in the weight range of 100 to 200 pounds with yields of es 3. Information necessary to aoe ty ‘with the United Kingdom the possibilities of conducting weapons testing underground and in outer space, 4. Information concerning clean weapon designs and supporting laboratory data, 5. Prices of components and materials for use in manufacture or preparation for manufacture of nuclear weapons and[Prices for nonnuclear parts which involve Restricted Data, and 6. Design information on the XW-35. The XW-~35 was a 1,600 pound device tested during Phase I of Operation HARDTACKandproduced Sear yield. nt, Executive Order On September 30, the President approved Executive Order 10841 which delegates to the AEC and the DODthe authority to make joint determinations, such as those stated above, under Sections 144 b. and c. of the Atomic Energy Act. svel WEAPONS FACILITIES The status of construction on weapons facilities at the end of September is shown below: Description of facility Percentage completion Manufacturing plant expansion, Albuquerque, New 90 {exico~-Expansion of ACF Industries, Inc., plant which produces thermonuclear cases. New Sigma Laboratory, Los Alamos, New Mexico— Replacement of temporary and inadequate weapons research and developmentfacilities. 89 Weapons development and engineering facilities, Livermore, California—Ordnance engineering support of the Lawrence Radiation Laboratory weapons program. 98 Area 5 expansion, Oak Ridge, Tennessee Facilities 100 for fabrication of ce ponents. * The Joint Committee was informed in greater detail of the above byletters of July 25 and ‘ September 11. Cw: : a. whet 7 weet Tes. 4 tty re a as Say. . 2 = ~~ = 3S acy ¢ rae er ras “s co SS ts SO ae ae NT re ET CE ae OO eret Ft - A peer ra ata Sota — _2 : er Z > lac . - wt. Cs SF ewST Om St oe eee to - NNa ee Pe ALL a ST. . Loe "rss tZy ~ . ae *. woe . a. : ~~ Line. t= Vv . = = < ~