C.W. Mays - Page 12 How might the present study be expanded to obtain additional information? a) The following plan is suggested: The fallout deposition should be established for each one of the Nevada test shots. The actual deposition of fallout should be evaluated by records of field gamma-ray intensities and fallout tray beta-activities, when available. When measurements are lacking, the deposition on the ground should be estimated from meteorological considerations. kcological factors could have caused the doses to the northern part of the state to be materially higher than calculated for the early tests. Rainfall is greater in northern Utah, and rain brings down fallout from the air. Also, the studies of Pendleton have shown that plant uptake is higher from wet pastures than from ary.? In the 1962 incident, the highest levels of iodine 131 observed in Utah milk were not in the south-west and central farms first traversed by the fallout; the highest observed levels were in the north-east portion of the state, over 400 miles from the Nevada test site. b) From feeding practices, the transfer of iodine 131 to milk should be estimated for each milkshed. Very little iodine 131 appears in milk when the cattle are on aged stored feea,+ as, for example, during the winter. Special efforts should be made to eStimate the iodine 131 levels in the nilk of those dairies which supplied large populations. c) The populations served by the major dairies should be identified and recorded. Dose estimates to these populations should be made, and the povuletions classified into rradec dose levels. DOE ARCHIVES 44

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