from each radioiodine to thyroid absorbed dose was dependent upon the time post detonation and upon the fractionation of the isobaric chains giving rise to the radiodines. Both factors influenced the Bikini Ash thyroid absorbed dose esti- mate made here. James assumed theoretical fission yields and assumed one-third of the ingestion intake occurred at ten hours and two-thirds at 30 hours post detonation. Also James only considered I-131, I-133 and I-135 in the thyroid dose estimate. Additionally James adjusted the thyroid dose downward to 1,050 rads for a 3.5 year old to account for part of the I-131 intake being due to inhalation. Inhalation intake based on Bikini Ash data was not significant rela- tive to ingestion intake. Several methods were used to estimate a range of fallout material ingested. One was to ingest with meals known quantities of drug grade caco, and subjectively arrive at similar descriptions of taste as given by the Rongelap people at the time of evacuation in March, 1954. A group of five adult white males at BNL reported that 200 mg when mixed with food, could not be sensed by taste at all. Anbdther method was to assume the range associated with the weight of the contents of the stomach in cases of sudden death (Ev66). This range 0 to 380 grams, mean 82 grams, implies a maximum of about 5 times the mean value. An- other method was to examine the range of Cs-137 daily activity intake from 1957 to 1983 for Rongelap and Utirik people. 5 times the mean value (Le83). The range of Cs-137 intake was about Another method was to examine the range of Cs- 137 body burdens exhibited by the population inhabiting Bikini Island from 1974 to 1978 (Mi83). The range was about 3.2 times the mean value. Based on the above range values, a value of 4 times the intake and thus 4 times the mean thyroid absorbed dose was assumed for estimates of range made here (see Table 15). 36