The efficiency of a wurface for ecllecting and holding the fallout material is important. It is not surprising thatthe highest dose rate readings as vell as biologieal effects were noted on the hair of the natives and also on parts of the exposed body where perspiration was present. Further, it was observed that even ene layer of light cotton material was sufficient to protect against bets skin damage in most eases®, This was éne probably not to the relatively anal: attecustion of the betas by the @lothing but rether to the physical efitustion of holding the radioactive material at sone distance from the akin, whict effect would be relatively large. An aided eonsiderstion is the possibility of high beta doses celivered to personne. from the fatbut material lying on the ground and other surfaces, this If the highest degree of contarination considered under policy is safe when in direct eontact with the skin, then the beta dose fron an equally contaminated ground will not be hasardous, Policy III for discussion on unequal ecrtamination on personnel.) (See However, it is true that the contaninstion mxy exceed the amount to deliver dose rates given in table ‘i and yet not be great amough to consider evacuation. Some personnel] say oot go indoors and thse who did will eventually be released from tiie restrictive actioc an tre nay walk around in 4 relatively highly contazinated area. Reswise of the more linited range of the beta, the location af greatest concarn is the lower legs. One report eetimstes a beta to gata dose rate ratio of about 75 to 1 at 10 centinsters above the grounc."* ® [Tepes piznificant H.R95(E) gp 5 burg peincs acclyentsliy Exmeses to Fojlout Refliation, Crormiite, E, P., et al. Mey 1954. E:ttmate of the Reletive jure Eeta ani Garre Readiets Lrom Fission Froduct:, 1S49 (UNCLAT TR ace! ALD : Under Folicy I it was recom Sondit, | os on. og,) @no Lurh, weA.S, MOL