25, While it ddées not, appear that we are intetested in taking any one United Kingdom weapon or device and weaponizing it for our use} there are specific developments which the United Kingdom scientists have made which hold a great deal of interest for us and which might offer advantages in our weapons systems. 26. When the information which has been transmitted to both parties has been fully analyzed, the United States and United Kingdom representatives will determine desired areas of coopere”.ion for further exchanges, 27. Following the initial exchange meeting, the United Kingdom invited the AEC to send representatives to Christmas island to observe their test operation during September. Two representatives from LASL witnessed one large-yielid shot and received detailed information on their diagnostic instrumentati-™ . During the second meeting, the AEC extended a reciprocal invitation for the United Kingdom to send observers to Phase II of Operation HARDTACK during the week of October 5-11. The Commission, with the concurrence of the Department of Defense, recommended to the President that certain information concerning diagnostic techniques and instrumentation be approved for release to the United Kingdom at that tine.2/ i/Tne third exchange-of-information meeting was held in early October and featured discussions on the instrumentation used in weapons testing. In anticipation of the disarmament meetings with the Soviets beginning Cetober 31 in Geneva, a fourth exchange-of-information meeting was held in late October. In this meeting, which was sponsored by the Department of Defense. and the Central Intelligence Agency, Shere was an exchange of intelligence information on Soviet nuclear weapons development. - 16 - Part IIt - © Ln awcHivEs