a ~52- Table 12. roo DRA i Radionuclide Concentrations in Clams at Bikini Atoll. pCi/g dry weight Date Collected Nov. 1972 Species Tissue 6005 Tridacna gigas Muscle 0.21 <0,05 ~ - '37¢. 40c,. 239,240, Source Bill Schetl (unpub] ished) " " Tridacna crocea| Muscle + Mantle] 5.51] <0,.05 ~ - " Hippopus sp. mo " 4.9} <0.05 - ~ " " Tridacna crocea| " " 32 <0,05 - - " Tridacna gigas Mantle 9.5} <0.05 <0.03 0.04 Muscle 4.9} 0.17 <0.03 0.012 April 1975 " " " Vic Nelson (unpublished) "