Table 6. Utirik adult body burdens, 1979 (D = ratio-derived; NA = not analyzed). Males Body burden ( ui) 60, D D 652, D 55e6 D 90, Number of persons 4.0x1073 3.5x1071* 237x107! 3.7x1072 Body burden All adults Number of (ici) persons 3.1x1073 9.7x10-4 2 14 - 1.6x107! 3.3x1072 Body burden (ii) Number of persons 3.5x1073 7.6x1074 1.7x1071 1.6x107! - 2.ix1071 3.5x1072 retura 2464 8.7x1074 15 Days post 3924 29 1.6x1071 1734 2464 6114 1.4x1073 1.2x1073 NA 5 5 12 2.4x1073 1.3x1073 NA 2 6 12 1.7x1073 1.3x1073 NA 7 11 24 1734 7213 8669 4.1107! NA 2.7x1071 NA 3.3x1071 NA 1004 1.2x1071 27 7.8x1072 21 1.0x1071 48 1.5x1074 1376, Females 2.9x107! 2.6x107! 6.2x1072 14 15 9 19 1.5x1074 2.0x1071 1.3x107! 4.3x1072 17 15 13 17 1.5x1074 2.5x107! 1.8x107! 5.3x1072 31 30 22 36 9225 1734 7213 8309 9225 *Measured at Argonne, not used in dosimetry. 90sr, and 137¢g. The standard deviation on this ratio is 15Z. 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 like~ wise differed by a factor of 3. The population average daily activity inges- tion rate and maximum value differed by a factor of 4. For the nuclides 37¢s and 657, a substantial sub-group in the population, children and infants, received a dose equivalent higher than the population mean value. - 118 -