mended thet sonsideration be given te wraguation vhen the ganuma dose rate reading at three feet was, for example, about 6,2 r/br at B¢3 hours Roughly, this would eorrespond to about 440 repa/hr of beta at 10 centiesters. Of cowrse, this activity deeays ed alec it is presumed that personnel would be sent indoors, st least for « few hours. Om the ether hand, it strongly suggests that biologically sigrificent doses may be delivered to the feet if not protected. ‘Skin lesions were frequent on the bere feet of the natives evacuated during CASTLE. This probably vas a eonmbination of beta dose from material on the ground and from that seuffed up over the bare feet and then elinging to the skin. (Fo lesions vere observed on the bottomof the fest, ndoubtedlydue to the thick opiderats 2 gel ah tt Mould beexpecte! that normal plosed-type foot wear (as compared ‘to. / ) open sandals) would afford adequate protection to the fest from such high deta doses as discussed bere. There is still no guarantes that beta radiation from esterial on the ground wil] not deliver significant biological doses to the ankles and perhazs licwer legs, after personnel ere released fron staying indoors Por exanrle, if the beta dose at 10 oentineters above the ground ts 446 rers hr at B43 hours, it would be about 190 repghr three hours later an4 iC rers/or six hours later. One furtuer porstbility ds the accumaletion of radioactive material around the ankles and lower legs rescltir¢, from norral walking ebout the area. This is ilscussed under Tolicy 1”: