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CHAPTER 1
INTRODUCTION
The fallout on the Marshall Usland atolls of Kongclap, konyerix,
Ailing inas, and Utirik fren the first shot of the series besinning
L March 1954 created an initial eacr-eency during which the gathering
of daha wag of secondary Liyertence.,
This Sandamental fact has resnite
ed dn uncertainty ta all attetpts to reconstruct the clromm tances of
Vig avant,
Calculation of the eicternal dosey received by the expeced
individuals has required that avallable Snfurnation be mitplenanted by
asmuaptiong, Much of the tnforsalion itself was necessarily inure ine
Gisative than exact, Im spite of brece difficuities, the couperation
of wany individuals and grou;s mide it possible to develop a fairly
cousisteat estimate of exteimal ganna dusage, although the quastton of
bota exposure mist renain -. stly,UNANIW Ted,
It has been assumed that no sienificant neutron or alpha jarticla
oxposure occurred, This, the main consideration in this report is the
total body ganna radiaticn exposure, Internal doses fron inhaled or
ingested material have teen discussed elsewhere (Reference 1),
‘Pata which form the basis of the analyais were furnished by several sources which are listed in the References, These represent
measurements made both in the field and in the laboratory in the portod
innediately following the exposure, Later information haa also been
included wherever it was available, a& summary of these results appears
in Reference 16, which covers thé biological and medical aspects of the
incident,