carefully after ¢he exposure, and detoiis of clinics’ and laboratory findincs
have been published (Crontiite, Cond and Dunhax).
The most heavily exposed group
wag composed of 64 Marshailese located on Nenseiap atoll at the tine of the acci=
dent, and the findings in this group wlll be dealt with most
None of those exposed diced as a sesult of the isradiation.
extensively here.
The Rengsclap people
received an estimated dose of 175 © cf pounce sadintion (adr dose), sufficient beta
radiation dose from adherent matericl
to scsuit in icsions in some exposed areas
of skin (chapter by Conard et al.), end minincl internal contamination with radlo-
nuclides (chapter by Robertson cand Cohn).
Consicercbiec uncertainty exists in the
magnitude of doses seccived; however, the Rongelap group con be considered to
reprcscat the hich sublethal exposure range.
Hoamtological depression was cone
Sidered to have resulted fron the gamma cxsposuze with Little or no contribution
from the surface beta or internal enitters.
Sesicol hematological determinations including total white count, differential,
platctet count end hematocrit were
made on exch exposed individual over tha initial
observaticn period of 72 days, ond repeat acterninations have been made at 6 months,
and then at yearly intervals following the exyvosure (Conard et at.}.
methods and initial. findings keve beca scported (Lond
for comparison
were ebserved initicify and
¢t al.}.
Details of
Unessposed groups
et the tince of follow-up studics;
however, variactions in findines in contsol groups keve psesoented difficultics in
precise interpretation, as in the Jaranese ctsposed ct Elroshima and Nasasaxki.
The avesase leuzocyte ond ploteles counts ase sham grophically in figures
8, 9 end 20.
The first counts on the Reneclco srsup wore dome on posteesposure day
3, et which tine a drop in total white count wos evident (the ccposed Americans
ts
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os
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The count thea fauctuated, peshap
a
previouciy?.
waite ccunt in the first 43 hours, cs has been reported
>
bowed a vise in total
with mo sevese depression over the fics
cussed, reaching minimun Levels at 6 weeks.
The counts approached the levels of