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HEADQUARTERS TASK UNIT
Task ae
APO 187
(KCW)
7.1
3
q
P.O. Box 8
c/o Postrastor
Encl (3)
San Francisco, California
Line -C\)
TU-13~-54-375
SUBJ®CT:
Of)
FY,
12 March 1954
Radiological Survoy. of Downwind tolls Contaminatcd by BRAVO
410545
E
AVAI LABL
BEST CO PY
1. Acknowledgement,
The members of the survcy tcam wish to cxpress thcir appreciation to the
Captain, officers and manbers of tho crew of the USS NICHOLAS (DDE 449) for thoi:
assistance and cooperation in conducting tho survey herein roported,
Captain
Elliot turned over all possible facilitics of his ship in ordcr to assist in the
survey. LT Frink, the Executive Officcr, organized all the operations of tho
boat partics, and it was only through his personal dircction and participation
that it was possible to carry out the small boat surveys under cxtremly difficu
ccnditions, Since most of the lagoon waters wore not navigable by a DDE, it was
neccessary to make long boat trips in high scas and land on tricky coral recfs,
That it was possible to makc, without mishap, a detailed survey of five widely
DOF O319
2.
Introduction
The BRAVO Shot contaminated a number of atolls in gercrally castward
dircetion from Bikini to such an cxtent that it becamo neccessary to evacuate the
native populations from Rongclap, Alinginac and Utirik Atolls and the military
persannel on Rongcrik Atoll,
Following this cvacuation CJTF SEVEN organized the
subject detailed radiological survey of the atolls to the castward of Bikini
(Ref. CUTF SEVEN Eniwctok 060400Z).
the following purposes:
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181 AGENCY /NRDL
scparatecd atolls in the course of three days with only two boats was largely duc
to his efforts,
.
e
The data from this survey wero requircd for
ae
The cvaluation of the radiation cffcets on cvacuccs,
b.
Tho cstimation of the clapsed time before rcoccupancy.
c.
The cstimation of tho residual radiation cffects of large yiclds
surface dctonations,
|
3
In connection with this survey, tcams from various Task Groups and Mr,
Wilds, Trust Territory Ropresentative, returned to the atolls to secure the
evacuated habitations, service military equipment, and obtain documcntary photc—
graphye
SAN
3. Operational Schedule
8 March - 0800
Survey tcam rendezvous aboard USS NICHOLAS (DDE 449)
in Rongclap Lagoon,
.
SR 213-5¢-3E
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