om, the time before evacuation. ‘1° Under these circumstances it is reasonable to assume that children drank the same amount of water and, therefore, had rhe same intake as adults; i.e., their thyroid burdens were also 11.2 uc of I (range 5.6 - 22.4 uc). The most probable dose from 131, is then 490 rad and the total dose 1270 rad. Considering a range in the thyroid burden (5.6 - 22.4 uc) and a thyroid weight range of 1.9 - 3.1 gms, the range of total dose is 520 - 3300 rad. Incidepsally, LASL assumed this mode of intake and calculated a dose of 150 rad, The thyroid weight used was not given but was probably 20 grams. We would calculate 160 rad, in very good agreement with the LASL estimate. Summary Thyroid Dose (Rads) to Rongelap Girls Ages 3 - 4 ny Inhalation Oral Ingestion Min Max Most Probable Min Max Whole Body 1590 200 175 150 200 175 Radioiodine 200 1350 510 520 3300 1270 350 1550 685 670 3500 1445 Total Most Probable The actual intake was undoubtedly a combination of the two modes of intake. The most probable dose is, therefore, in the range 700 - 1400 rad.