SRN UBRSTUONS a. Nhelter. Those indisid ials who reimiutiier, indoors or under the trees during the fab our period developed less severe lesions, b. Bathing. Small chimdren «whe went wad ing 1n the ocean developed fewer foot lestons Most of the Americans. wo were more aware of the danger of the fadlout. took shelter wuminum i: changrert buildings, bathed and clothes and consequentiv ieveloped only vers mutld beta lesions. c. Clothing Asmnele ciserofotter matel ai offered almost complete protection. as sas demonstrated by the fact that lesions developed tlimost entirely on the exposed paits of the body 3.54 Factors Favoring Lesions a. .lrens Lesions of were meas more the Development of perspiration Ants a ‘hat ciumerous i arenas where lb. Delay in decon tunenets oy There was a lelay of | or 2 days befor satisfactory decon tumimition was poss ble Phe y rolonged con tact of radioactive initetia son tue skin during this period increased the cose to he skin However, the dose rete feo off riprdbs and de contamination would faye Had te be | rempt or order to lave neen nioast effeerie C Differdtiesinds onciatniiration, Theth ch hair, anointed with . neass ocomit ob dress ing, resulted in heavy cortamunation Decen tamination of the head was slower than for the other parts of the bouy and may ave enhancec the development of epilation und seal lesions Lack of Correlation With Hematological Findings ArrempTs WerE Mabe to correlate the severity and extensiveness of skin esions with hemato logic findings for individuals in the Rongeiap group. No positive correlation was found wtl depression of any element. Thus, the contann nation of the skin apparentl]s did not - 2 nificantly contribute re he tofa. body dose ot radiation. OF PYLAT TON 35 3.7 Discussion ly ert Elas Bren Jittle previous experience sit oendiation dermatitis resulting from exouire to fallout material from nuclear detomawoos, and the general consensus, until this event, ia been hat the hazard from fallout material aus nevhgible. From the present experience + sevident that following detonation of a large wile device close to the ground, serious ex- woure of persounel with resulting radiation eons of tae skin may occur from fallout natertal, even at considerable distances from he site of detonation. ‘This incident is the first esaluple of large numbers of radiation burns of nan beings produced by exposure to. fallvatommaterial perspiration is abuncant sich as the folds of ‘he peck, axillae, and antecubital fossae, 3.6 ANE With the Hiroshima and Naga- “thi detonations fallout was nota problem since ‘he bombs were detonated high in the air. The dash purns of the Japanese were due to thernar radiation only. Foilowsmg the Alamogordo atomic detona- ‘ou a umber of cattle grazing near the point of detonation developed lesions on their backs due tothe deposit of fallout material (4). Also, tol owimg a detonation at the Nevada Test Site, is eer horses near the Test Site developed rsons cesuiting from fallout deposit on thetr pike Ke (cas Ionewlton ef a/. (6) described burns of the wards of four mdividuais who were handling fiss on produer material following detonation frog nuclear device. These burns were due The gross lesions ip reiy te beta radiation. of he hands occurred from an exposure of abeut. heur resulting in doses between 5,000 he .6.000 rep of beta radiation (maximum en- spout | Mes) with a small gamma comporent considered to be insignificant. The lessons were deseribed as developing in. four phases © 9 An utial phase which began almot immediately after exposure wid consisted (fo onoerythema with tingling and burning of tere roe bards, resching a peak in 48 hours and sub sothg rip idly so that by 3 to 5 days there was Hiatt. ibsence of signs and symptoms: (2) ver gd, shase whieh ocenrred from about the