‘a Nelson, C: At Rongelap and Utirik samples were yathered to attempt to correlate radiation levels in soil with adjacent fruit trees (pandanus, coconut, breadfruit) and arrowroot, messerschmidia, scaveola plants for a possible extrapolation purposes at Bikini and Eniwetak where vegetation samples are limited. Other samples collected included 24-hour urine samples, water, and certain marine specimens. coconut crabs It will be some time before radiochemical analyses of these samples is completed and the data analyzed. Gamma spectrographic analysis (whole-body counts) were carried out on 22 people at Utirik, 46 at Rongelap and 31 people at Bikini, the families who had returned. including members of These data are undergoing computer analysis. Preliminary analysis of these data give the following estimated average body burdens of 137s: MALES No. Bikini 18 Ucirik Rongelap U.S.Medical 9 22 6 UCi Body burden 0.129 0.262 0.475 0.0021 FEMALES % MPC + 4.3 B.7 15.8 0.0? i | MCi No. Body burden 13 0.133 13 24 0.073 0.317 %MP C ke 2.6 4.4 10.6 Team * Using 3 »Ci MPC-based on the standard 1/10 of the maximum permissible burden for industrial populations which is 30 UCi according to the Recommendations of the International Commission on Radiological Protection, ICRP Public.2 (1959). A gamma survey was carried out on Bikini Island using a scintillation type survey meter calibrated for 137?cs which respresents about 95% of the gamma radiation on the island. Preliminary analyses showed roughly the following levels on the island: A. Village (Living area) Inside cement houses with coral covered yards Outside cement houses with coral covered yards ~Inside cement houses without yard covered coral Outside cement houses without yard covered coral B. Average #R/hr. 2.38 3.95 2.98 9.44 Along village road 13.1 Interior-coconut groves 41.6