ie. stayed with the remainder of the party in the vicinity of the winch. except two of the multiple samples, . yt we ~ eT MET w BO: ¥ a) ea = All but 100 jaFds" GP the cable was recovered with all of the samples The winch and cable remained cool the winch testing higher than 5,000 mr. This material was removed to * safe distance fram the operation. Major Cook «rossed the causeway -: with Dr. Ogle, approaching the zero point to a reading of 20,000 mr/hr ae?-$ rapidly higher intensities until it reached 15,000 mr at six inches, A piece of metal, supposedly a link from the tower cable was found near 1% (50 mr) during more than half of the operation, and then began te get | and returned, The mission was entirely successful, all members of the party taking proper precautions in handling the samples with gloves and tongs, and no overexposures were obtained. Major McDormel's party landed about twenty minutes behind the heli- copters, beaching on the island by an LOVP that had been picked up by the AVR, The missions at Gamma "A" and Gamma "B" station were completed satisfactorily although at Gamma "A" station the roller tracks were wedged and the party at this station received some contamination on their clothing while forcing an entrance. A camera placed on the causeway was recovered. All of the personnel returned on the AVR 38, and were checked for contamination on boarding the USS BAIROKO, Meanwhile the samples had been flown by helicopter to the laboratories on the USS ALBEMARIZ for final analyses, The entire operation was completed earlier and more efficiently than in test X-RAY. Following the test, the USS BAIROKO weighed anchor and was proceeding slowly to its anchorage off the test island, preceded by four boats patrolling the lagoon waters ahead of the ship, Two other boats preceded the rest of the JIF 7 fleet to their anchorage off the island te be used for test ZEBRA, These boats were tracked and plotted by radar and the readings of radiation intensities in the water were transmitted in code to the Radsafe Center and to Radops on the BAIROKO. Iso~intensity lines of water contamination in the lagoon between the anchorage and the test islands were plotted for the information of the Task Force Radiological Safety Officer. . The background count of radioactivity on the bridge of the USS BAIROKO began to raise noticeably immediately following the test, but the amount was not alarming and it was decided not to change the anchorage, This increase in background was also observed at the same time on Parry island, and was probably a wide-spread phenomenon, The survey of the test crater from the air was begun by LCDR King in a G-1,7, but he was forced to turn back when his plane received se mich fall-eut from the cloud that the readings in the plane began exceeding the daily toleranve. ~6- UNCLASSIFIED 5001922 — seem x, se. 7 - 2 ss aa “ ot a eS hea