Table 7 26 Mean concentration of 137Cs and 2°Sr in Pandanus and ?°Sr in coconut crabs collected at Rongelap Atoll from 1957 ~ 1974. Mean Concentration: Sample Type Pandanus leaves " " " " " " " " " Coconut crab, muscle Collection Area Rongelap I " " " " " . Kabelle I " " Lomuilal, Lukuen | Date Number of Samples in pCi/g, dry 137 Cs 1958 1959 196] 1963 197] 1974 9 19 16 13 3 ] 114 87 101 69 15 13 1958 1961 1963 1974 4 ] T 2 360 120 170 43 0 Sr 25 15 1m 46 42 40 1957-58 12 14 Kabelle I Kabelle I " 1955 1957-58 1974 ] 14 3 120 47 4.8 Coconut crab, exoskelton " Arbar I " 1959 1974 2 2 480 64 " " Mellu I " 1959 1974 2 1 1100 240 " " Kabelle I " 1959 1974 3 3 1600 190 " " " " 1974 4 25 These data were taken from the following sources: Collection Date 1955 1958-1971 1974 b. Arbar, Busch I Source Donaldson, 1955 LRE, unpublished data This report 27 pCi/g, wet,multiplied by a wet/dry ratio of 4,5. av \a a. Rongelap I Collection