Table 3. 228, or- 2m, in human bone Number of Locality sump lo Germany (Th) J.K. (Ra) 25 . ~3 pCi/g(10 ~) fresh weight 1.4 + 0.5 ; ~2 pCi/g(10 *) ash 0.5 + 0.2 1 1 1 1 1 India (th) 1 Korala 1 1 1 U.S.A. (Ra) “25 tn, ® 4 wt 32 ; pCi/g(10 2 2.8 1.1 lel 0.7 (0.2 - 1.9) -2 “) Sample Referonce fomur (11) f mur (8) type cortical bone (18) (27)