primarily by the account of activity occurring simultaneously at both atolls, but transpertation problems for men and equipment were a contrituting factor, The main disadvestauvze to this split activity was the inability to pool equipment for joint use. Occupancy of the Eninman complex was concluded earlier than expected, after which all TU-9 operations were carried on from aboard ship or from Parry Island, (ce) Growid Crews, A total of five camera crews and one syne sound crew exposed tha bulk of the footag2 on Operation Castle. Each camera crew was avs.iented by one still phote. raphe:, was mobile, and was completely equipped. The maximum camber of Lookout Mour:ain Laboratory personnel overseas at any one time was 50. Personne! were returned to the Zi as soon as the workload permitted. (a) Aerial Crews, Three C-54 aircraft were obtained on loan from MATS and modified at Norton Air Force Bisa to accept camera racks and assecctated equipment fabricated at Lockout Mountain. One RB~-36 provided the platform for the high -altitud: cloud studies. All fouc aircraft participated in one practice mission prior to depa cture from the ZI and one practica mis- sion before the first shot. No C-54 aircraft aborted on any of the photographic missions. 4.8.5 Remote Installations Six remote caméra installaticis were utilized on most shots. These installations were designed and fabricated by Lookout Mountain and were located at various strategic points adjacent to Ground Zero, yet so positioned to facilitate recovery by helicopter or M-boat. Owing to unforeseen circumstances beyond the control of TU-9 (heavy fall-out, irradiation of film, tidal waves, inability to recover, etc.}, not all footage obtained was utilizable. That which was salvaged, however, yielded some photography. 4.8.6 Film Exposed _ As of May 15, 1954, the following amountof film, both still and motion picture, had been exposed during Operation Castle: 16~mm KCO 16-mm B/W 35~mm B/W motion picture 35-mm EK motionpicture 4x 5 B/W stills K-20 B/W K-20 EK 23,100 ft 20,100 ft 3,540 ea 150 ea 150 ea K-20 and K-24 EK 544 x 514 3,360 ea K-17 K-17 24 x 2x 1,600 8,400 1,200 96 4x5 EK still 4.9 83,600 ft 64,600 ft 9%, x 9% EK 94, x 914 BW 2, BW 24, EK 732 ea ea ea ea ea TASK UNIT 12, UCRL PROGRAMS _TU-12wascre: created for the purpose of carrying out diagnostic measurements upon the “shots. Some personnel of TU-12 assisted TU-1 in making some specific measurements upon the’ shot for LASL. Thd shot was deleted from the Castle schedule; therefore no measurements were made on it. The work of this Task Unit was organized under four programs. Program 21, Radiochemistry, in cooperation with LASL Program 11, made measurements on all the shots at Operation Castle. The summary of the techniques and results of this program, as well as those of the other programs, is given in Sec, 2.3. Program 22, Reaction History, was to carry out the Ganex, Tenex, and alpha measurements onf a , Program 23, Scientific Photography, attempted to 75 eee