MARSHALL ISLANDS POPULATION. Estimates for expoSures to both U.S. sonnel and Marshall Islanders were made in the Project 4.1 after-action ‘sort (Reference 65) and have been used here. The unevacuated population .: Ailuk was not included in the Project 4.1 information, but it may be -aply estimated by comparing the intensity of the readings made at Ailuk and nearby Utirik at nearly the same time on 2 March. All of these have been summed up in Table 25, which presents the total collective exposure as a result of BRAVO and how it was distributed among jroups. Comment on this table appears in Chapter ll. -ADIATION EFFECTS AND MEDICAL OBSERVATION -- TASK FORCE PERSONNEL The Rongerik detachment of 28 that was evacuated to Kwajalein by air came in two groups, the first eight arriving at approximately 1400 hours and the second group at about 1830 hours. Upon arrival the men were checked for the presence of radioactive ma- terials on their bodies. There they showered to remove the material. The first group had from 7 to 11 showers and the second group had 5 each. The contamination present and the decontamination results of the showers are shown in Table 26. After about a week at Kwajalein, the Air Force and Army personnel evacuated from Rongerik were returned to Enewetak Atoll (Reference 15): It was decided by higher headquarters to bring the 28 personnel to Enewetak for further physical examination and to relieve the Kwajalein Hospital, whose facilities were limited in the field of radiological medicine, of the responsibility of those men. The first group arrived 8 March and the remainder followed the next day, and all were quartered in the Enewetak Post Infirmary where daily blood counts and physical checks were instituted. On 17 March the group was moved back to Kwajalein to be "examined by specialists in radiological medicine in a location more remote from the possibility of future contamination" (Reference 15). 241 However, on 13 March