perma
v
SLE tlDaniadeaPiecegarcacmedeBentnieinesFalMind
BL oahash ites
SreeEy
COEE
DENBAAD.
rw nde.
UNCLASSIFIED
ABSTRACT
The amount and distribution of radioactive material remaining on several atolls and incorporated into plants and
animals ef the Marshall Islands was determined two years
after their contamination by fallout from the March 1, 1954
nuclear detonation of Operation CASTLE,
Readily detectable amounts of radioactive contamination
were found in animals, plants and soil. Most of the activity
in the edible portion of plant specimens was contributed by
cesium-137
The major radionuclides found in the tissues of fish was
zinc-65, and that in clams, cobalt-60,
Residual so}] contamination remained confined to the
surface.
il
mr.
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