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Eneman Islands were in areas found to be the most’ radioactive
by the U. &. Public Health Service personnel.
on Nam I. the
well point was driven in a low area near the center of the island.
Existing wells were sampled at Enyu.
Attempts to obtain ground-
water at Rerokoj were unsuccessful.
Soil samples were taken by one-inch depth increments to
depths. of ‘ten inches or more near each well point.
All depth
increments for two sets of samples from Eneman were analyzed
but only the surface one-inch of other sets of samples were
analyzed.
points,
|
In addition to samples from soil pits at the well
surface samples also were taken at Aomen and Oroken.
Sediments from the Bravo Crater were taken by dredge from
«
depths of 40, 120,
140,
and 160 feet.
ANALYTICAL METHODS
of Energy
Denartment
fice
Historian’s Oi
S metry.
Eo
RCeHcItVr
mma-ray Ap
Gamma-Ray Spectrometry
zed by ga
All of the samples were analy
Lhnzogs
They were counted for at
NaI(T1l)
s
least 100 minutes with a 3 x 3-inch
crystal used in conjunc-cion with a 256-channel analyzer.
Selected samples were counted for 1,000 minutes,
either with a
3 x 3-inch detector or a detector system consisting of two
opposing 5 x 5-inch crystals operating as a summing spectrometer.
Most of the biological samples were oven dried,
compressed in polyvinyl chloride
ground and
(PVC) pipe to a volume