feld test," ustop a piaabom man expesed To poth (he aiGiab ae be aduad padnatron Phe tepen doses tor each sifttation are shown Pa. bob wath abl date as per centoab the 3 cencimeter dose. With the diverging carta) radiition from (he port of exploston, Che exit dese wae seen to he 63 per cent of the 3 en: dose, but woth the diffuse testdunl Creld of tission product tardies fiona suriiee dose gome eid times greater Chan the 3 cnr and deeper dose trout the tuorder amma Components was observed. Vhis is seen to be of the same order of mayaiiide cts Chat estumeted above, At hemhts above and below the 3 foot level this surtace dose would become lower and higher respectively, but probably would not exceed 50 Cimes the d foot war gamois dose or 80 times the nuidline dose, even an contact with the ground. An estimate of shin dose due to ground contamimition for the Rongeliap case would result, for eximple, ena fipure of about 2000 rep to the dorsum of the foot, 600 rep at the ip fevel, and 300 rep at Che head it comtinuous exposure with no shielding occurred. Some reduction in dose undoubtedly resulted from shretding and movement, and it seems probable that the external beta dose from lacal skin ConGiumimition far outwerched that rons the pround cn tniportance, Phis is empliustzed by the facet that clothing, probably reduced the beta dose trom: the ground by £0 to 20 per cen. ’ *F. W. Chambers, Project 2.2b, Residual Gamma Depth Dose Measurements in UnitDensity Material, AFSWP, WT-719, Operation UPSHOT-KNOTHOLE.