ee, CNelson. ‘ : C _ At Rongelap and Utirik samples were vathered to attempt to correlate radiation leveté in soil with adjacent fruit trees (pandanus, coconut, breadfruit) and arrowroot, messerschmidia, scaveola plants tor a possible extrapola- tion 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 These data are undergoing computer analysis. the families who had returned. Preliminary analysis of these data give the following estimated average body burdens of l37cs; 1 MALES Bikini Utirik No. | Ronge Lap U.S.Medical Team * 18 9 22 6 Ci Body burden 0.129 0.262 0.475 0.0021 FEMALES % MPC ’ 4.3 8.7 15.8 0.07 i | | uCi No. Body burden 13 0.133 3 24 0.073 0.317 Z14P C + 2.6 4.4 10.6 Using 3 »Ci MPC-based on che standard 1/10 of the maximum permissible burden for industrial populations which is 30 -Ci according to the Recommendations of the International Commission on Radiological Protection, ICRP Public.2 (41959) A gamma survey was carried out on Bikini Island using a scintillation type Survey meter calibrated for !37Cs 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 2.38 Outside cement houses with coral covered yards 3.95 Inside cement houses without yard covered coral 2.98 Outside cement houses without yard covered coral B. Average UR/hr,. 9.44 Along village road 13.1 Interior-coconut groves 41.6