ve ro Le hate hs 2 gh aw ' it a my +. oy at, F yk 7 ode WeeBO Ota \ * Sy with existing AEC-CJIF policy agreements, Relations with the Task Force and with the other Task Groups were cordial, and the cooperation and support received from them were excellent, Alamos after thes eae es 1 . 2 As shown in the organization chart, the advisory group consisted of experts in various fielis who advised the Task Group Commander and members of the Task Group on technical problems. LASL T-Division representatives were particularly active at the test site and at Los hart ¥ * 3.3 ADVISORY GROUP Their recommendations resulted in the ASL Health Division representatives, in addition totheir advisory functions, actually served in the Rad-Safe Task Unit and performed special functions in connection with accidental fallout on inhabited islends and conducted studies to improve fallout predic-~- tions, T. N. White of H-Division took part in‘several surveys of contamicated islends and was in charge of one of the surveys. ¥ 3.4 PLANNING AND TRAINING 3.4.1 Progrems, Concepts, and Schedules The first general statement of concept for Operation Castle was It envisaged the testing of as many to one high yield thermonuclear experimental device 50. in additia At that t time, Castle was tentatively scheduled for September-October 1953. Bikini was being considered for the thermonuclear shot and Eniwetok 2, pope for the fission shots. v gs ctnree fission experimental weapons of the orderof ate - issued by CTG 132.1 in June 192. Holmes’ and Narver cade a cursory reconnsissance of Bikini in Se,tember 1952, and started an extensive survey the following month. more FS started. t about the same time a considerable anount of preliminary Castle planning, including a rough outline of support requirenents, went on between Task Group 132.1, Joint Task Force 132, and represen~ tatives of the AEC. t this time, the AEC decided to establish ean AEC Bese Facilities Tesk Group for Castle. F PRE vorlt SO ae ce PTT ee In lovemser 1952, late in the Ivy operation, ccnstruction at Bikini By Februery 1953 it had been decided that February 15, 1954, wes _— the earliest possible date for the first Castle detonation. A tentative achedule shown in Table 3.2 was given lirited distribution at _ 3 CopleasDog LANL J-Div. 51 te. /) Pos ee] p os %) :