-3Toe measurement of body radiation by such analysis is very sensitive and requizes complex electronic equipment aad personnel highly trained in electronics from Grooxhaven Nacional Laboratory. 3. Parsoanel exposure to gamma radiation: Gamma levels on the island weee derived from daca furnished by other radiological survey groups. MONITORING DATA The results of the personnel monitoring data on people living at Bixini analyses are P presented on Table I. ¥ The cata on urine Note that average P pCi/liter urine compared with Rongelap was for for Bikini th since 1969 are presented in the accompanying-tables. 90. 2.5/3.8 and for "cs 638/3366. Based on standard guide lines (International Congress of Radiation Proteccioa ICR?) these isotopes have been well below maxicum permissibdle levels. assuriag also is the vircual absence of plutonium in the samples. Re- Levels for internally absorbed 1370, as measured by spectrographic analyses are presented in Table 2. Note the average values for males and ferales on Bixini compared with those on Rongelap (in nCi/pg body weight) was 1.4/6.4, again well below the maximum permissible levels. and 2 show that body burden (extrapolated) for 90 The grashs in figures 1 “Sr and 137 Cs in the Bikini peorle are well below the peak values noted in the Rongelap seople. The _Rongelap people reached a peak of 6-11% of che maximum 90... permissible level (Zor general populations) and of ahouc 22% for 13755. These low values for internally absorbed radionuclides is in accord with the fact thac che people on Bikini have been subsisting mainly on imported foods. “az tonigiaution of gamma radiation co the aeopgle on Bixini is somewnas Q724Cer Inan on Rongelad. 9092113