samples from wotho, Tarawa, Ponape, and Kapingamerangi, K*~
contributed the major portion of the radioactivity.
cullzcied at the
samples
Other
same time contained wil, 185,
radioisotopes identified with the 1955 fallout.
J3ome samples,
3uch as coconut crab abdomen and whole fish from Wotho,
tained me? ,
none.
of tne
es’
whereas others,
such as
Some of the land plants
long-lived
pace from Wotho
re. oorted py Held
contained
contained measurabl3 amounts
fission produc:s cs! 37 ana 309°,
level of Sr 90 was
1s0tope hy the
land plants,
con-
The high-
found im a sample of coconut crab cara-
(18 yuc’g cry).
The concentration of this
curapbace of lani
crabs at Eniwetok hae been
(19
The relatively capia decay or deta radioactivity in
som: of the samples collected in 1956 at Tarawa,
wotho
(Fig.
,sotopes.
2 A-E)
Ponape and
andicates the presence of short-lived
A gamma spectrum analysis of one of the samples
(leaves anu stens of a Messerschwadia plant from Wotho)
showed that 7r?? Nb? weve the predonminait radigisotopes in
this sampi-.
Thomas :t al.
(1958)
found that th-:se isotopes
kontributec approximaicly &4 per cent of the total radioactivity
in
isotopes
: duplicate scample.
in
the
rer? islands.
1356 samples
The presence of short-lived
indicated recent
fallout at
~/6-
—_
a
ART
a