gee Fen fr. activity on any teland is ‘about a factor of 10‘higher than’: Rongelap.,Bo ys mo, mo oo ey Oe, . yoo Ce ts . - 4 - ~ 7 . ‘ . fom v on on 10. The Rongelapese go on fishing expédi tLoris to ottier © islands, including those showing both higher and lower setter . Vowden However, these’ Rongelapese spend an “appreciable part’ of, thett ihe oe time in “boats over water where | the external gamma’ activity, is oF co near. background values. “Thus , the yearly average. for“these” os probably would nos’ differ greatly from those on Rongelap Island, “2, x Se my vee a @ of the Rongeldpeseare contained in theTable one. attached28" Annex-tat‘to “appendix "an ‘There’are Wide vaviences’ in, the. \.fe data 80, that estimated average values are used. | ‘Phis is ‘not™aned ty ~ eee oe es. unreasonable approach since ab’‘would be expectedthat ‘the Pood : “oe ~ actually consumed would be about as variable as. the individiad ~ aa analyses. wha sanples collected for ron ns 4A strontium-90. For an adult worker the’‘maintained‘maximum “ya fon 12. The isotope of principal concern in the food chain is” permissible body burden is 1000 Sunshine Units '(1000° micromtero-” “Ny curies of sr90 per gram of calcium). Values for_ maximum pers. missible exposures to the general population are i/o that for” adult workers, or 100 Sunshine Units, maintained level in the , body. The National Academy of Sciences report stated nae There Seems no reason to hesitate to allow a universal human strontium-- burden of 1/10 of the permissible---" corresponds for adult workers. This to the 100 Sunshine Units. * 13. Table One indicates that the average concentration of, strontiim-90, in ‘the total, food supply might be less, ‘than "360% - ttn te ie, 3k Sunshine atte.“(the‘data on “land crabs shown in’ Table One are -8rt | ~ . J “Appendix, “A” . cata grr 5 OCs