Mh. wet var Yaw: oat: SA tod by BRi vo that one survey metor could not bo properly zoro adjusted. The four romining AN/PDR-39, still operated officiontly and scomed to bo in good working ordor, One (1) cach Bockman MX-5, and onc (1) cach AN/PDR-27A was brought alonz for any low intonsity checks nocessary. Two (2) oach calibrated AN/PDR-T1B, wor on hand to servo as spares in the event of operational failuro with the /N/PDR~3? None of these instrumants wero roquired, _. 6. The average and moximum gamma doso ratos measurod on tho various islance of cach atoll aro plottcd in Figures 1 through 5. <All moasuremonts wero mde at waist hoight unless othorwise indicated. The mximum readings do not include measurements made with the instrument next to a contaminated surfaco,. Dotailecd surveys wero mado of all the inhabitcd localitics, Typical readings are given in Tables 1 and 2 for the nativo villago of Rongclap Island, and the TG 7.4 camp on Fniwctak Island. ‘In gcencral, the villages and the camps appeared te have slightly lowcr avcrago dose ratcs than the remainder of tho island, This can perhaps be ascribed to different geometry of tho contamination -and to slightly grcater ponotration into the looso gravel in the nativo villag:s.. The dose rates inside the native huts appcared to bo almost the same as the dose rate outside. The dose rate in the middlo of the military barracks, tonts, and shacks was 1/3 to 1/2 that outside, This reduction is probably largely a gcomct: effect. The dose rate fell off rapidly on tho beach below the high tide mark. Thero was no cvidence of rain washing off the contaminated mtcrial. The foilag. on the windward sidcs of the islands appcarod to be slightly above avcrage con- tamination, : TABLE 1 TYPIC..L READINGS IN RONGEL\P VILLAGE — 8 MARCH Location Dose Rate (mr/nr) Rongelap Island (average) 375 | Near central cistern Near southern cistern Near northern cistcrn 300 220 350 Center of village 280 TABLE 2 TYPICAL REiDINGS IN CAMP ON ENTVETIK IS. - 10 MiRG COPIED/D9 LANL RC E Outside Dose Inside Dose Location Rate(mr/hr) Rate (mrfnr) Eniwetak Island (average) 280 -- Tent, cdge of min camp 270 Mess hall Latrine Slecping quarters Dispensary : 220 “260 260 ee _ . pale) 17 160 90 . n / 2 DIS Seinen ao ee