“= quam, The first sample was taken for study, and divided, The first part arrived with LODR Vandergrift at the BAIROKO at 1330, and the second arrived at Eniwetok with Lt, doy by 1740. The party became contariinated to same extent and arrangements were made to clear this party at Eniwetok, The tank control operator was subject to some exposure, and to protect this operation a second helicopter containing a monitor was dispatched to accompiny and rewain forward of the operating plane, Helicopter Operation ~- Radsafe Party Ho. 7 This mission consisted of the dispatch by helicopter, of members of the LAJ~3 group to the lami cable on the test island, in order to assist in the recovery of samples. It was essential that certain of the samples on the land cable be recovered as quickly as possible in order to take proper technical measurements. ‘Winding the cable on to the drum of the winch took considerable time, and starting the dmm prouptly saved tine for theAVR porty which later cane to the island to complete the collection of the samples, A monitor was sent as monitor for this party to accompany Dr. Ogle and his assistants, The duties of the monitor included the clearing of the landing for the other helicopters, standing by while the winch was started, soins forward alony the cable ina jeep with Dr. Ogle to recover samples near the sero point and later opening up the cache and starting the radio conmunication. Three helicopters were used. It was found after X-RAY Day that the operation would be facilitated if six men were sent in on this operation, accompanied by two monitors, and this procedure was followed on succeeding tests. Cn X-RAY Day, a monitor cleared the landing of the other planes, and went to the cache where he found the door blom in and the radio inoperable, Several of the samples were missing from the cable as it was wound in, and Dr. Ogle with the monitcr went forward to locate these samples, The mission was accomplished in less than two hours with very low exposure (200 mr) to all personnel, The monitor then returned to the AVR and accompanied an unscheduled water cable party, Mo samples were found cither afloat or on the bottom of the lnsoon, as far as could be seen. Since the party went quite close to the zero point in the water, considerably more exposure was thé result. Havever, the total received was well within the tolerance established. Fore of the missing samples were recovered in liter trips to the island, Stratezic Plot Center STRATEGIC PLOT maintained a fall-out chart of the Ingoon, and nearby atolls of Kwajalein and Ujelang. The Eniwetok atoll chart was kept up -~3- Saeed