rate from the equation. This method yields n-1 estimates of Ky, where n was the number of data points. An average value of KR was assigned for each nu~ clide, and the results for the Rongelap and Utirik populations are given in Table 3. For the evaluation of K, from Eq. 1 and 2, radiological and physiological parameters were obtained from the open literature (ICRP59, ICRP68, ICRP69, ICRP79, Ki78). A representative sample of these parameters is presented in Table 4. Table 3 Summary of Dietary Rate Constants (K.,47) 60 Rongelap Adults Co 90 65 St Zn 137 Cs Males 1.5x10°2> —-1.8x107% 3.1x1072 14x10" Females 1.6x10°24.1x107~ 3.5x107> 1.4x104 Adults 1.5x10> 3.1x10 > 1.4x10" Males N.D. 4.6x10 Females N.D. Adults N.D. Utirik Adults 1.9x10" -4 -4 N.D. 1.4x10 4.0x10" N.D. 1.4x10°" 4.2x10" N.D. 1.4x10 7 N.D. = No data sufficient for analysis. The values of K, were similar for males and females and for residents of Rongelap and Utirik. For 905, on Rongelap a factor of 2 difference between Ke values was observed for males and females. The female parameter for Rongelap Atoll compares with that obtained from the Utirik data. A paired t-test of the Rongelap male and female data indicates that the male/female difference was highly probable and therefore not significant. 15 This difference leads to a