a Specific Activity 0.08 pCi/ug Rb-e: 0.02 pCi/ug Kb Table 4 Natural Levels of Rb-87 W OTL 7 Fstimated Mean Range Area Reference Barth's Crust 6 pei/e Cale. Ozean Water 3 poi/i d. Internal Dose - Gonads ted 245 3 mrad/y —

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