- . " oy . | a Nowe 3. Nelson. 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, coconut crabs and certain marine specimens. 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, including members of the families who had returned. These data are undergoing computer analysis. Preliminary analysis of these data give the following estimated average body burdens of 137cs: MALES No. Bikini 18 Utirik Rongelap U.S.Medical Team * HCi Body burden 0.129 9 22 6 0.262 0.475 0.0021 FEMALES % MPC * 4.3 Body burden 13 0.133 13 8.7 15.8 0.07 LCi No. 0.073 24 0.317 7MPC * 2.6 4.4 10.6 i Using 3 HCi 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 137Cs 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 covered yards Average UR/hr. coral Outside cement houses with coral 2.38 covered yards 3.95 Inside cement houses without yard covered coral 2.98 Outside cement houses without yard covered coral Along village road 9.44 13.1 B.- Interior-coconut groves 41.6 DOE ARCHIVES