. 8t. George, Btah | 2 we ts 3.5 Lincoln Kine, Nev 4.0 x 1972 12 1.5 Mesquite, Bev 1.7 x 1972 3 1.0 Groom Mine, Sev 3.4 x 102% 7 0.35 Piochs, lev 2.0 x 107% 3 0.015 *The method used in estinating doses to the limgs is given in Appendix K, tne assurption made was uniforn distribution of radiation which, of course, is not entirely accurate, The criteria previously established by an Ad Foo dangle Feasibility Committee (Washington, 0.C., duly 13, 1951), for air concentrations vas "At a point of human habitation, the activity of radioactive particles in the atmosphere, sveraged over a period of 24 hours, / phall be limited to 100 microcuries per cubie meter of air (corresponding approximately to a ground level gama intensity ef 30 x/tr). “The 24-hour average radioactivity per cuble meter of air, due te suspended particles having diansters in the range 0 aicron to 5.0 microns, shal] not exceed 1/100 of the above; nor is it xyn\ an ectivity greater than 1O-2 microcuries calculated 4 hours after the blast," In the January 20, 1954 meeting of the Ad Roc Committee the basis oft RNY desirable that any individual particle in this size range have for recommending the above air concentration vas discussed. Essentially, these criteria were selected by estinating the canna dose that eight be delivered by the passing of a radioactive cloud. TOELTY “! Ald ‘Since there are better