“UNCLASSIFIED ttl The first sample was taken for study, and divided. The first part arrived with LCDR Vandergrift at the BAIROKO at 1330, and the second arrived at Iniwetok with Lt. Woy by 1740. The party became contaminated to some 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 a Helicopter Operation ~ Radsafe Party No, 7 LESab oe wt ale - Para a " 7 PE SARS : ae This mission consisted of the dispatch by helicopter, of members of the LAJ-3 group to the land 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 drm promptly saved time for theAVR party which later came to the island to complete the collection of the samples, A monitor was sent as monitor for this party to accampany 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, going forward along the cable in a jeep with Dr. Ogle to recover samples near the zero point and later opening up the cache and starting the radio communication. =m a - | mt a ie : TDG, 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. On X-RAY Day, a monitor cleared the landing of the other planes, and want to the cache where he found the door blown in and the radio inoperable, Several of the samples were missing from the cable as it was wound in, and Dr, Ogle with the monitor 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, -No~samples ~ were found either afloat or on the bottom of the lagoon, as far as could be seen, Since the party went quite close to the zero point in the water, considerably more exposure was the result. However, the total received was well within the tolerance established. More of the missing samples were recovered in later trips to the island. Strategic Plot Center STRATEGIC PLOY rcintained a fall-out chart of the lagoon, and nvarby atolis of Kwajalein aid Ujelang.. ~ The,baiwetok atoll chart was kept up = 3 = pedi gerbes aeRonyinte rere ae oat Pag te é “ee weg Cee . otk an Re wt ene . 3 3 ts pete te ons Parsee” oe i at ry ppb ae a lee + eS . tigen AP a sted, ” UFne Be ic SA EN ee ge o. esPatesPe igneon RE ST 3 fa": ate Res PA Se TR wy te Be * ballet oie Bele bhaig i ee gia AR ; : ie iy L ae iT pear FeitaS Wehr eeeoe Ras cee Moh . oo | ea dispatched to accompany and remain forward of the operating plane, ome 50019149 UNCLASSIFIED