————— en
—
UNCLASSIFIED
7. IS THERE EVIDENCEOF "DRD’* OF DEBRIS STORED IN THE Ww
BY SUPER BOMBS?
TMOSPHERS
,
Method of Stixiy
Analyais of samples fron
worldwide fallout network.
This probles has been sade
by detonations in tities country
Loult
end the
is aw in the atmosphere te
fallout in Movember-Deceskar
approximately 0.1% of the c
residual activity from this
The mean weekly falleut at
is continuing to diminish with
theme we ee,
of perhaps one to two monthe,
onation.
stations
a halflife
MISCELLANETUS HIGHLICHTS
i.
Fallout recorded by the worldwide network, cperated on a
skeleton basis between tests, was less than 1 d/m/fs¢/day in
December.
The origin of the debris is in doukt but ths 89/90 ratio suggmsts
Peau
MIKE.
Thia rate of fallout is equivalent to .02% per week
.
wotal residual radioactivity from MIKE.
2.
Taking all our data into consideration, we find we ars u:
wren preface as
fic
et Siew te wt. coereo|
a
account for more than 5% of the MIKE fission product yield
M Day to the present. A preliminary estimate, based on our
samples to date,indicate that present atmospheric storage,
cipitated, will contribute about as much Sr’¥
to the earth
is already present.
00131986 008
3
7~
“1g
a
>
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