rel . 1SK_UNIT 7 - J. D, Servis, Maj, USA RADIOLOGICAL SAFETY (J. D. Servis) A damage and radiation survey was conducted on<i day. This survey covered the eastern and northern islands of the atoll and was conclusive enough to limit reentry to Enyu, Biking and Airukiiji on the first day. The survey on D+1 day indicated that recontamination was limited to the Yurochi - }Aomoen chain and the Bikini - Enyu sequence of islands. No mterisl secondary fall-out was encountered at Bikini Atoll as 8 result of this detonation. Lagoon water was materially contaminated with radioactive . tediment. Readings of 4.2 r/hr were obtained at an altitude of : 4 feet over zero point. This contamination moved to the west ‘ and southwest so that small boat operations could be conducted = in the area. Lagoon flushing through the southwest passaze