FEB 14 °S4
FROM KAMAN SCIENCES CORP
14:13
PAGE. 2/226
TO 17822958154
SVL —_ LL? O-
;
Cay. 201
HEADQUARTERS
.
JOINT TASK FORCE SEVEN
oe
ee)3 58662
APO 187 (HOW), ¢/o Postmaster
~
San Francisco, California
we april i984
#”
MEMORANDUM FOR RECORD
SUBJECT:
1.
BRAVO Shot, Operation CASTLE
PURPOSE:
To make a matter of record operational as~
pects thatware
ware considered prior to BRAVO event of Operation
CASTLE and to analyze the resultant situation in light of
available pre-shot and post-shot infomation.
2.
GENERAL INFORMATION:
Operation CASTLE is planned to
cousist of a series of seven detonetions at the Pacific Froving
Grounds, which encompasses Eniwetok and Bikini Atolls.
BRAVO
is the code name that was given the firing of the first device,
SHRTMP, at 0645 M on 1 March 1954, off Namu Tsland, Bikini Atoll. ©
Subsequent to BRAVO detonation radioactive debris fell
on certain inhabited atolls of the northern Marshall Islands.
Radjation intensities rose to levels sufficient to warrant evacuation of four atolls and all personnel were removed from these
atolls to Kwajalein in accordance with the operational emergency
plan of JTF SEVEN. Areas evacuated and gamma dosages received
gare indicated below:
ATOLL
POPULATION DISTANCE FROLI DOSES RECETVED
GROUND ZERO
Allinginas
BongelLap
Rongerik
sirik
.
—
1
79 Wu
80 R (computed )
82
100 NY
100-150 R (computed)
28 #
133 NY
154
40-98 R (film badge)
270 XM
17 R (computed)
(#) @8 American Service personnel; 25 USAF Weather Detachment plus 3 USA Signal Corps personnel.
(
All evacuees are under competent medical care.
Be
PREVIOUS EXPERIENCE AND CHARACTERISTICS OF NUCLEAR
DETONATIONS:
Radioactive debris i8 an inherent characteristic
of ail nuclear detonations.
It originates frem fission fragments
CLASSIFICATION CANCELLEDOROHANGEDSO [OY S47/Z2A7/01/
8 15 1994