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7.
ome Se aE
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bo ae oe eh
ee UNCLASSIFIE
9, WHAT IS THE EFFICIENCY OF THE GUMMED PAPERS IN SEPARATING P
yROM RAL?
eeee eS
a
7
Method of Study
7
1|
Principal Pindin
ba
|
Suspensions of radio-
‘
as
ve iron were
.
ee
oratory and artificial
yain produced under
cles less than .3
AI. Data for less s
fall rates are no f as yet available,
various conditions of
fectiveness of the
Wm
> YA
ddl
gumzed papers in sepa-
tating the iron particles
from the "rain" was
determined.
3, 10 WHAT EXTENT IS THERE VARIABILITY Is THE FRACTIONS OF Sr5? AMD $90
IN BOMB DEBRIS?
Method of Stud
.
Samples of fallout ard
atmospheric dust from
m various bursta were
m
analyzed for total activ-
ity and the two isotopes
" of Sr.
Principal Findings
Fallout dusing the weeks immediately
a burst is deficient in both stronti
Samples of
out and airborne
towards the end of 1953, at which t
to have been the principal contritte
in both isotopes.
In some samples the measured Sr59-90
theoretical by an order of magnitude,
cases by less than a factor of two,
deviated from
00131986.00
1057034