~3The measurement of body radiation by such analysis is very sensitive an guires complex electronic equipment and personnel highly trained in ele from Brooknaven National Laboratory. 3, Personnel exsosure to zecca radiation: Gamma levels on the isl were derived from data furnished by other radiological survey groups. MONITORING DATA The résults of the personnel monitoring data on people living at = since 1969 are presented in the accompanying-tables. analyses are presented on Table I. Tne data on urine Note that average pCi/liter for Bit 137 urine compared with Rongelap was for 995. 2.5/3.8 and for Cs 638/32% Based on standard guide lines (International Congress of Radiation Prot ICRP) these isotopas have been well below maximum pernissible levels. assuring also is the virtual absence of plutoniua in the sauples. : ... 137 for internally adsorbed presented in Table 2. . Levi . Cs as measured by spectrographic analyses a Nore the average values for males and fecales o1 Bikini compared with those on Rongelap (in nCi/pg body weight) was 1.4 again well below the maximum permissible levals. and 2 show that body burden (extrapolated) for 90 The graphs in figure ““Sr and 137 Cs in the 3 people are well below the peak vaives noted in the Rongelap people. Rongelap people reached ao peak of 6-11% of the maxisnun 90. permissibl level (for general populations) and of about 22% for 13405. These low values for internally absorbed radionuclides is in accord with the fac that the people on Bikini have been subsisting mainly on imported food The contribution of gamma radiation to the people on 3ixial is somewha Sreater than oa Rongealap. BEST AVAILABLE COPY DOE AR