Tables 5 and 6 summarize the 137cs body burden data collected in 1978 and 1979 for children. It must be noted that data reported here are uncorrected for height and weight differences between subjects and the phantom. This will have a minimal effect on adult data (10-15% possible error) (MI 76). Body burdens of the children reported in Tables 5, 6 and 7 have been corrected for geometric differences between adult standard man and the average Marshallese child. Table 7 summarizes the 137 Cs data that is presently available. It presents the mean (X), standard deviation from the mean (0), and range of values reported for the sampled population. The data are segregated by sex and age. Table 8 compares the observed reduction in 137¢5 body burdens from April 1978 to January 1979 with the reduction in 1376, body burden that was expected as a result of relocating the Bikini Population in late August 1978. Values for the biological removal rate con- stants were obtained from NCRP Report 52 (NCRP 77) and ICRP Publication 10A (ICRP 71).