CHAPTER 11 PERSONNEL EXPOSURES Estimated exposures for task force personnel for BRAVO are summarized in Table 25. The estimates were made in several ways but the estimate for the largest group exposed, that is, TG 7.3, is extracted from a Navy tabu- lation (Table 23) through 22 March. Because the authorities making this had information not now available, this estimate has been, and is here, accepted as accurate. film badge readings. The Navy estimate for TG 7.3 was based primarily on Recorded radiation exposure data are available for 85 to 90 percent of all TG 7.3 personnel, depending upon the data sources used for TG 7.3 personnel strength. Where film badge data for individuals were lacking, exposure estimates were based on film badges of other exposed personnel. It is because this estimate for this large group was available that the construction of Table 25, with its many assumptions concerning the smaller groups,,was considered worthwhile. Given that Table 25 is a fair estimate of the BRAVO contribution to the collective exposure from the CASTLE series, then this can be subtracted from the whole-series data from the Consolidated List (Reference 13) to yield an estimate of the contribution of the five shots that followed (see Table 91). Table 92, which summarizes Tables 58, 59, 86, 88 and 90, dis- Plays the information from the Consolidated List for the entire CASTLE series. Table 25 shows that the JTF 7 total exposure for BRAVO was about . 9,000 man-R, and Tables 58, 59, 86, 88, and 90 show that the total JTF 7? exposure for the CASTLE series was about 17,300 man-R. Thus, BRAVO ap- pears to have contributed a little over half of the exposure. Taking the most accurate portion of Table 25, the TG 7.3 estimate, and comparing it with the TG 7.3 total from Table 59 shows about the same relationship. Fortunately, there were no non-task-force exposures for the later events that were comparable to those represented by the non-JTF 7 exposure statistics in the rest of Table 25. 409