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