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CHAPTER 2
FIELD DOSAGE DATA
2.l
EARLY LATA
when the exposces Devan, no monitoring i soonnel were in the
vicinity of any of tie vuntarinated
tions of a tullout sas visuel, when
in the air on each of & wo islands.
vation, AL showgh confit chlag, cerve
the
ro
of the elund at
doalands, One of the first tadicaa cnow-Llke satertal was obcerved
The reports on the times of cbsere
to estaLliish the tine of arrival
moupb ab koneaK (s 2 Cha ter 6),
ber
inst evidence of a radiation fisLd was ob served when a low=Level
eaia Teckergund nontioring Unstrwicnt at the weather station beyan to
register and thea wout off “seale at 100 mi Jos ab éeprontiately 4+ 7.4
\
houra, Table 2.1 lists the
the
readings af this +ens : :
hour pracedia: this tine (is ference 2) The ve fata are the only
formation available oa the inittal rate of
imerease of yamna dose
h
pal
?
pate on acy of the islands,
At the tine of evacuation of the military personnel from Rongerik
on 2 March aud the Marshaitese from honpelap, Allinginae, and Utirik
on 3 March, dose rate readings were nade on each island,
This was done
with AN/PLR-39 radiation survey meters which were available at the time
and which had not been calibrated beforehand. Their operating conditton was not known at the tine of use, The readings of these instrue
ments are given in Table 2.2, and constitute the earliest data on gama
to
fo
doge rates in any of the areas (Reference 3),
eo
AMIN
Tre
EXPOSURE CONDITIONS
So far as is Known, the individuals exposed on Kongelap and
Ailinginae remained outdoors and had no access to shelter of any kind
on the islands, Ho measures were intentionally taken to protect the
skin, but clothing was worn to a depree sufficient to shield from most
of the deposited beta activity, In addition, much of the fallout skin
contanination was remaved from sera individuals, as a result of their
ae
swinning and fishing in the lagoon at the time, On the other hand, the
beavy coconut oil hale dreszing used by the Marshallese tended to concentrate radioactivity in the hair,
The surface contanination on the
‘round was apparently fairly unlforn over the Lslands, so that the calulation of averaye ganna doses fron this scurce appears justifled,
10
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