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succeeding days after each shot as required. The instrumentation for each
was the same as that used at Eniwetok. Communications from helicoptor to
ground were provided by EG&G but proved to be unsatisfactory. Eventually,
the data were sent back via the flight-operations radio net when necessary.
Evacuation of the atoll before each shat required that the pre-entry
survey originate from afloat. Normally the helicopter selected for the mission departed from the USS Badoeng Strait and made its first stop at the
USS Curt!ss to pick up the rad-safe personnel, The helicopter then stopped
on Enyu to pick up CTG 7.1, and the mission was carried out.
Once the
island of Enyu was declared clear by CTG 7.1, personne) returned to the
island and all operations were conducted [from ashore,
3.1,4—Monitors for recovery parties were provided as required.
Eniwetok, the demand was quite small.
As at
Generally speaking, projects provided
their own monitors and required no monitoring assistance from TU-7.
3.1.5—The radiochemistry trailer, obtained from the Army Signal Corps,
was deck-loaded on the USNS Ainsworth.
ried out In thie trailer.
All radiochemistry work was car-
The Laboratory Section handled approximately 400
water samples, which were taken from the water supplies of the various
ships and from the swimming beach on Enyu. No chemical analysis was required; gross beta-gamma activity was determined.
3.2
Shots and Survey Results
Very l'ttle interference with preparations for firing the various devices
was caused by excessive contaminatiou. In certain cases the spctting of the
shot barge was delayed for a day or so as radiation levela were excessive
in those areas in which the surveyors had to work, Generally speaking, how~
ever, no delay was encountered as a reault of the contamination.
lists shots, shot dates, and times for Bikini Atoll.
Table 3.1
TABLE 3.1—FIRING SCHEDULE, BIKINI ATOLL
Device
_
Date (M.1.)
Local Time
Cherokee
21 May 56
0550:38
Zuni
268 May 56
0556
Flathead
12 June 56
0626
Dakota
26 June 56
0606
Navajo
11 July 56
0556
TEWA
21 July 56
0546
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