~2h-
~
unET
thereof
provides an ingestion mechanism which by-passes the root route,
I-131 can be detected in thyroids all over the U.S., and it maps out
the fall-out pattern.
It is estimated that everyone in the U.S,
received a dose of 1 rep in the thyroid as a result of CASTLE,
ong2l2p islenders got 170 r to the thyroid from I-131.
The
A classifica-
tion problem arises in thet meny people are detecting I-131 from the
Russizn shots in sheep end cattle thyroids,. Dr, Bugher cautioned
inst the use of milk from heavily contaminated areas,
the strontiun-90 surveys ere showing a consistent pattern; in-
r-~90
crezsing study is teing required,
The body appears to discriminate
inst strontium in fevor of calcium; "we are living in a nonéquilitrium situation,"
ereazed,
Sr-90 in the New York milk supply has in-
There is some evidence from balloon semples for Sr
Soze overlsy maps showing world-wide fall-out (extrapolated to
anuary 1, 1955 by a t7
“1.2 Tew) were Gisplayed,
from 1 to 60 me mixed f.p./ni®,
2s €:2 $
Sr-90/it2. )
The numbers ranged
(This unit is approximately the sare
The accumulation in the southeern hemisphere, Dr,
s to give evidence for prompt atmospheric mixing
tetween the northern end southern hemispheres,
The fall-out in the
U.S. during March 1 - May 1, 1954 ranged up to 100 ne/mi2,
YW
Dr. Rebi asxed atout plutonium fall-out.
fa oc
a
Dr, Eugher said that
2d been detected in lend sezples aftsr the March 1 shot and in
3
Dw
E ARCHIVES