y,
ORENSTEIN
.
ie
ark
ee
c
Ge
5
a
:
nT
oT
eet Site.
These were Castie
1934.
ee
et
Redwing - 19596,
and
Maxgtack - 195°.
MATERIALS AND METHODS
Te v.site to the islands were made possible by the
coepecsaticn of Task Forse 7.1 and the Trust Territory of the
Mited S:ates.
Two to five-man teans were flown to the
:t.ands to collect samples which were refrigerated.
to *he Eniwetok Marine Biological Laboratory,
Berchea,
driad.
ceturned
A&rseected,
pacxaged and then sent to the Laboratory of
RAGiation Stology,
Sing an4¢ ana.ysis.
Seattle, Washington.
for further proces-
The samples were prepared on 1.5-.1nch
stainless steel planchets and counted for cross beta radioactivity in et*‘er cne of two counting systems operated in
the Geiger~M™mlier
window
region:
(a}
- .¢ an® cne-halfeinch end-
ws tem
‘pancake type Antomtube im a j-inch leac Anton
shicld connected to a Nuclear Chicago Model 181 scaler and
equ. oped with an automatic sample changer.
This system has
@ Ceckscounc of apout 13 counts per minute and an efficiency
-f
iporomimetely
whoo
4
oo
.8 .ot
i2 per cent based on «40 |
(o} An internal
cThasber continuously fiushed with methane in 2
Counter Laboratory Wucleometer Mark 9,
Model 3..
ay
oe