enabled helicopter and LCM recovery missions to begin as soon fas possible. Crews began decontaminating the small craft left behind in tha lagoon during the shot. Likewise, personnel on board the Bairoko decon HMR-362 helicopters as they returned aboard the carrier from covery missions. inated rvey or re- A returning helicopter would land in the canvas bathtub, where it was scrubbed and hosed down with fresh water (Referenke ll, p. 6-7). After initial survey and recovery efforts were underway, the Curtiss and the Ainsworth returned to the lagoon, followed by the restfof the task group ships. These vessels entered last since many of their stshot ac- tivities were dependent upon radiological surveys of the waterfin the vicinity of the shot site (Reference ll, p. 6-7). Table 10 summarizes radsafe-related activities at Bikini ndar each shot time. ENEWETAK SHOT. Shot NECTAR, fired on 14 May at 0620, did rpt require a full-scale evacuation of Enewetak Atoll. Instead, personnel Enewetak, Parry, and other islands in the southern portion of Jnoved to e atoll. Nevertheless, "all ships were evacuated to nearby operating arefBs at sea as a precautionary measure." Reentry began immediately after the detona- tion and within an hour all ships had returned to their berths [in the la- goon in readiness to evacuate the atoll should fallout pose a d&Bnger to personnel (Reference ll, p. 6-8). POSTEVENT SAFETY MEASURES General Procedures All personnel on Bikini were evacuated before each detonatign. reconnaissance by helicopter established the radiological levelq lagoon and on the islands of the atoll. Early in the All islands were considered con- taminated until cleared by TG 7.1 Radsafe Control personnel. Preoperation planning called for Enewetak postshot control d decon- tamination activities to be centered at Enewetak and Parry islands. 125 On