172 Health Physics August 2010, Volume 99, Number 2 Table 8. Estimated acute intakes (kBq) of 24 selected radionuclides by representative adults of four population groups from the Bravo test, the Castle (1954) series, which includes the Bravotest, and overall tests (Total). Doses for Utrik and Rongelap Island communities accountfor relocations. All nuclides are fission products unless otherwise noted. All values rounded to twosignificant digits. Majuro residents Radionuclide Fe" St Sr ey BY Zr °°Mo ‘8Ruy ORY BimTe By OTe 1327 1337 135] BIC MOBa MOFa Mpa Ce 1BCe Ce Spr 23°NIp? Bravo 1.0 1.2 3.9 1.3 8.5 8.6 1.0 2.6 2.3 1.5 7.6 1.5 1.5 1.5 3.6 1.2 5.4 5.0 2.6 2.2 6.9 1.1 48 5.6 x x x xX x X x X x x X xX x xX X x xX X X x X <x x X 10° 10° 107 107° 107! 107! 10! 107 107! 10° 10° 10! 10! 10! 107! 10° 10° 10° 1077 10° 10° 107! 107 10! Kwajalein residents Castle series 48x 5.7 X 1.9 x 1.5 x 1.1 x 4.0 x 3.2 x 1.2 x 1.1 x 3.3 X 3.1 x 4.9 x 5.1 x 2.6 X 4.1 x 54x 2.3 x 2.7 x 2.8 xX 9.8 x 1.6 < 5.3 X 5.5 X 1.7 X 107 10° 107? 107° 10° 10° 10! 1077 10° 10° 10! 10! 10! 10! 107! 107? 10! 10! 107 10° 10! 107! 107 10? Total 5.6 6.6 2.2 7.6 1.8 4.7 3.8 5.5 1.3 4.2 3.7 5.9 6.1 3.4 8.4 6.4 2.7 3.1 1.2 1.2 2.0 6.2 1.2 2.0 X X x X x x X x x x x x X X xX xX X x x x x x x X Bravo 107° 10° 107° 107 10° 10° 10! 10° 10° 10° 10! 10! 10! 10! 107! 107? 10! 10! 10°? 10! 10! 107! 107! 10° 5.1 6.2 2.0 6.1 9.2 43 5.6 1.3 1.1 1.0 4.0 8.2 8.4 1.1 5.7 5.8 2.8 2.3 9.4 1.1 4.4 5.6 8.8 3.2 x x x x x x X x x x x x X x x xX x X x x x X X X 1074 107! 1077 1077 107! 107! 10° 107 107! 10° 10° 10° 10° 10! 107! 107° 10° 10° 107 10° 10° 107? 10°? 10! Castle series 6.5 xX 7.9 x 2.5 X 5.6 X 3.3 X 5.5 X 7.2 X 1.7 x 1.5 X 1.5 x 5.0 x 1.0 X 1.1 X 1.9 X 4.6 x 74x 3.5 X 2.7 x 5.7 X 1.4 x 6.3 X 72x 9.8 x 4.2 X 1077 10° 10° 10° 10! 10° 10! 107? 10° 10! 10! 10° 107 10° 10! 10° 10! 10! 10° 10! 10! 107! 10° 10? Total 9.7 1.1 3.8 5.9 4.0 7.8 1.1 6.1 2.2 2.2 7.5 1.6 1.6 2.7 5.2 1.1 5.2 4.0 6.1 2.0 9.1 1.1 1.1 6.2 X x x xX x X X X x x xX X X X x x x x X x x x x X 107° 10! 10°? 10° 10! 10° 10? 10° 10° 10! 10! 10? 10? 10? 10! 107! 10! 10! 10° 10! 10! 10° 10! 10? * Activation products. individual weather observers likely received intakes of varied magnitude depending on their work activities during the hours that fallout was deposited. Acute intakes of any radionuclide resulting from fallout from any test for representative residents of each atoll. Table 8 presents our estimates of acute intake for the 24 radionuclides contributing the largest doses to adults at four representative communities (Majuro residents, Kwajalein residents, Utrik community, and Rongelap Island community).** These four communi- ties represent the range of exposuresto fallout radioactivity from smallest to largest, both in terms of deposition on the ground (Fig. 2 of Simonet al. 2010), external dose, and internal dose from ingested radioactivity. Intakes presented in Table 8 are from the 1954 Bravotest, from the entire Castle series (all 1954 tests including Bravo), and cumulative overall tests. Rongelap and Utrik populations. Because of the relocations of the Rongelap and Utrik communities following Bravo to the mid-latitude Kwajalein Atoll and the southern Majuro Atoll (Table 3, Simon et al. 2010), members of those communities did not receive all their intakes at their homeatoll. Depending on the half-life of the radionuclide and the transit time of fallout from the test site to the southern atolls, the southern atolls (represented here by Majuro) had acute intakes estimated to be 0.01% to 2% of those received by the more highly exposed Rongelap population. In terms of absolute activity ingested among adult residents of these four atolls, Majuro residents would have had the lowest intake. For example, adult Majuro residents would have had about 6% and 9% of the '*'1 and '°’Cs intake (cumulative overall tests), respectively, of adult Utrik community members, and about 1%, and The intake estimates account for relocations of the 2%, respectively, of the intakes of adult Rongelap Island community members. * Note to reader: A distinction is made in this paper between “residents” of either Majuro and Kwajalein and “community members” of Rongelap Island or Utrik Atoll. In the former case, we are referring to anyone living permanently on those atolls during the testing period. In the latter case, we are referring to the entire group of persons exposed on either Rongelap Island or Utrik Atoll and who were members of the group relocated from each of those atolls. Chronic intakes Annualintakes of the five long-lived radionuclides (Fe, Co, °Zn, *Sr, '°’Cs) giving the largest doses werecalculated for the 26 population groups considered in this study for the years 1948 to 1970. Cumulative