Table 6. Utirik adult body burdens, 1979 (D = ratio-derived; NA =. not analyzed). Males Body burden ( uCi) Females Number of persons Body burden ( ui) All adults Number of persons Body burden ( uci) Number of persons Days post return 60.0, D D O° on D 4.0x1073 3.1x1L073 9.7x1074 3.5x19071* 2.7x1071 3.7x1072 3.5x1074 7.6x1074 2 14 2464 8.7x1074 1.6x1071 3.3x1072 15 2.1x1071 3.5x1072 3924 29 1734 2464 55 ne D 1.7x1071 1.6x107! 1.6x107! 6114 90, 1.4x1073 5 2.4x1073 2 1.7x1073 NA 1.5x1074 12 14 NA 1.5x1074 12 17 NA 1.5x1074 24 31 8669 9225 &.1x107! NA 2.7x1071 NA 3.3x1071 NA 1004 1.2x1073 13765 2.9x1071 2.6x107! 1.2x]071 6.2x1072 5 15 9 27 19 1.3x1073 6 2.0x1071 1.3x1071 7.8x1072 4.3x1072 15 13 21 17 1.3x1073 2.5x1071 1.8x107! 1.0x1071 5 .3x1072 7 ll 30 22 48 36 1734 7213 1734 7213 8309 9225 *Measured at Argonne, not used in dosimetry. 90sr, and 13?cs. The standard deviation on this ratio is 154. These ratios were determined only when the body burden for the nuclide of interest had reached a maximum. Thus a significant time passed on Rongelap, 2 to 3 years post return, before a body burden comparison was valid. It was observed, in all cases, that the population mean body burdens were lower by a factor of 3 than the highest for any individual in the population. The population mean dose equivalent and maximum dose equivalent Likewise differed by a factor of 3. The population average daily activity ingestion rate and maximum value differed by a factor of 4. For the nuclides 137cs and 657n, a substantial sub-group in the population, children and infants, received a dose equivalent higher than the population mean value. - 118 -