radiation exposure vhensver possible, bathing and a change of elothing gicht de suggested for situations where the whole-body infinity gaze dose was Jess than 10 roentgens and ghoyld be recomended for areas where the exposure ie higher, Oo In table II it was suggested that the relative average gamma dose retes frou am infinity contaminated field at three feet above the ground compared to that on the natives measured by a survey weter held close to the body vas: achir @ 7/. (Utirikx stoi) dag ali = 6/2 (asninginas Atoll) 53 =. qt R Ye chr = 16/1 (Rongelap atoll) It is recognized there are many uncertainties in estimating such a relationship by this means, Even if one ascunes the dose rate readings vere taken accurately the factors involved, especially in reletion to the smount of material coliscted and retained on the body, eartainly are not constant. The higher ratio at Rongelap Atoll might have been dus to a physical Phenomencn vhere the quantity of material falling per unit area was #0 grest that 4t vas not retained so completely on the body. Even if this explanation is accepted, there still rezain many questions, Theoretical considerations indieste a gema dose rate ratio at threes feet above an infinitely contaninated field to that at four inches from an equally contaminated field of six inch radius to be shout W/i,_ (See Appendix D.) aie J Vary Sa 39