TASK GROUPS 7.1 AND 7.5 BIKINI PERSONNEL. For the elements of TG 7.1 and TG 7.5 at Bikini, the mean value of the crew of the ship to which they were evacuated has been used to calculate collective exposure. This may result in both overestimates and underestimates, depending on assumptions. Task Group 7.4 Exposures The contributions to the JTF 7 collective exposure from the sampler aircraft flight crews and ground personnel have not been considered in this summary, aS they cannot be readily extracted from Reference 13 or simply estimated. Detailed records, however, are available on cloud tracker and Sampler aircraft contamination (Table 24). For BRAVO, the initial radioactive decay period was 20 hours or more before decontamination was undertaken. 4 March for WB-29 No. The reading of 12.000 R/hr on 7335 is probably a typographical error in the source document (Reference 30). Other records (Reference 29) indicate that 4.755 R/hr was the highest contamination read on an aircraft from BRAVO, and that was on 1 March. Since the figure of 4.755 R/hr is not shown in Table 24, it was probably recorded on an aircraft for which there are no data in the 4926th document (Reference 30). The reason a reading of 12.000 R/hr on 4 March is of some concern is that it means the radiation intensity on Ll March could have been 2,000 R/hr ete decay rate), a most unlikely level. If 0.120 mR/hr was the actual 4 March reading, then on 1 March the intensity could have been 20.300 R/hr, which is within bounds for similar aircraft on other events. Because of a reported immediate wash with a subsequent reading of 0.065 R/hr, more validity can be associated with a reading of 0.120 R/hr for the first survey. No. 038. Another late first survey was on F-84G Applying similar assumptions, been around 1.520 R/hr. the 1 March intensity could have By the same token, B-36 No. 1086 on 1 March might have had a reading of some 50.000 R/hr. Personnel Exposures -- Rongerik Twelve film badges were issued by TG 7.1 radsafe for the personnel on this remote weather station. These badges were numbered 00309 through 238