AA eee om a et ee a . on wey CeA ws! CRITERIA III con nation of Personnel it DISCUSSICN Data on Humans In table II it was suggested thet the relative average gsicza dose rates from an infinity contaminated field at three feet above the ground compared to that on the natives measured by a survey meter held close to the body was: Orr/er [7/1 Wtardik Atoll) 15 mr/hr (1 (ots tol) 420rv/rr = g/t (Adlinginae Atol2) en 53 wr/hr ~ 2200.rr/er 2 16/1 80 mr/br ~ 6/1 \ slap Atoll 4to22) (Rongelep It is recognised that there are many uncertainties in estimating such a relationship by this moans, Even if one assunes the dose rate readings were taxen eccurately the factors involved, especially in relation to the ausunt of material collected and retsined on the body, certainly ars not constant. The higher ratio at Rongelap Atoll might have been due to a physical phenomensn where the quantity of material falling per unit area was sO great that it was not retained so completely on the body. Even if this explanation is accepted, there still remain many questions. Theoretical considerations indicate a gamma dose rate ratio at three feet above an infinitely contaminated field to that at four inches fron an equally contaminated field of six inch radius to be about 7/1. (See appendix D.) The sizes of areas and distances from the surfaces were selected independently of any of the information on the fallout on the natives -3L = ee ee ne fee Sein Be ee nN #