we PRIVACY ACT MATERIAL REMOVED carry out air monitoring missions in conjunction with the Air Task Group operations. Also operating out of Kwajalein would be the C-47 aerial survey to determine radiation intensities and fallout at varying altitudes in the vicinity of ZERO island on the shot day. On X-minus-3 the first of a group of monitors who would accompany various scientific parties on X-day departed for various points of rendezvous in preparation for movement to ZERO island on the morning of X-day. Also at this time Dr. Nolan, Dr. Whipple, and Captain Knowlton came aboard the BAIROKO to act as advisors on matters of radiological safety, and Lt. Commander GMRof AFSWP arrived to participate in the first test of the operation. According to plan, all communications on X-RAY operations from RadSafe missions were directed to the MT, MC KINLEY RadSafe Center and monitored by RadOps on the BATROKO, This provided immediate first- hand information for the Radiological Safety Officer aboard the MT. MC KINLEY. On succeeding days the plan called for communications direct to RadOps on the BAIROKO. The MI. MC KINLEY RadSafe Center also plotted daily possible fallout patterns based on weather fore- casts and maintained daily surface and air RadExes (survey showing limits of expected fallout on the surface and of air contamination) for the information of the Radiological Safety Officer. Information from the cloud tracking planes for monitors of TU-7.6.1 was also plotted in this center. . 4 On X-RAY morning the BAIROKO was anchored at an observation point approximately seventeen miles, 340° T from Engebi. 66 Se° ctio n IX PRIVACY ACT MATERIAL REMOVED At H-plus-20

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