PRIVACY ACT MATERIAL REMOVED As stated by " major deviations from typical crew activities were: (1) Except for times when his attacks of erythemia, urticaria, and pruritis were severe and he was in the sick bay, he spent most of the time in the shade on the hangar deck (02 deck) or in the vicinity of a 40mm gun mount on the fantail. From here he could look up and see the helicopters parked on the aft flight deck. (2) When recreation parties were permitted to go ashore on Japtan Island, he, being a former lifeguard instructor for the Red Cross, would accompany the parties to serve as lifeguard. estimates that he spent 85 percent of his time either on the hangar deck or anisland. RADIATION ENVIRONMENT From Reference 2, the integrated free-field intensity on the USS RENDOVA's weather decks (topside) for the first 18 days of November was calculated to be 65.7 mR; all of which resulted from secondary (late-time) fallout from Shots MIKE and KING. The aft end of RENDOVA's flight deck, which had become contaminated on | November by radiologically "hot" helicopters returning from early survey missions, was a restricted area and was roped off; hence, this area was not considered a radiation source which contributed to the typical crew exposure. Radiation environments on the residence islands of Enewetak Atoll were, in the absence of radiological survey data, estimated based on shipboard radiological data obtained on ships anchored in close proximity to the islands. On Parry Island, the residence island closest to Japtan, the integrated intensity for the same period was estimated to be 70.1 mR. It is assumed Japtan Island received comparable levels of radioactive fallout. states that he spent "a lot of time” on the RENDOVA's hangar deck and fantail which were directly below the contaminated helicopters parked on the aft flight deck. A 35 mR/hr, | November survey of the ship's interior revealed a maximum intensity obtained on the hangar deck directly below the contaminated of helicopters. Figure | depicts the reconstructed radiation environment on the RENDOVA's aft flight and Nanger decks resulting from the contaminated helicopters. The roll-up phase report from the RENDOVA (Reference 3) states that the maximum intensity of helicopter #28 was 400 mR/hr at H+ 1.1, and that of helicopter #26, | R/hr (1000 mR/hr) at H+ 4.5 hours. However, the RENDOVA's deck log states that the maximum intensities on helicopters #28 and #26 were 2.0 R/hr at H + 1.1 hours and 1.5 R/hr at H + 4.2 hours, respectively (Reference 4). The intensities and times reported in the deck log are plotted in Figure | and are used in this analysis. Attempts to decontaminate helicopter #26 between H + 4.2 and H +9 hours appear to have been somewhat successful as evidenced by the steepened decay PRIVACY ACT MATERIAL REMOVED