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Li- SHE AEC SECHEECREPY PE
LES(— 77SS
COLLECTION
BOX No.
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Kedlrchaa VS
arch 1,
1957
and
LEMORANDUM FOR Lit. FPURRAY:
3URDEN FROM 3500
SUBJECT:
He
BLRASE IN ME
|=
g
T have 3 little difficulty checkineg your figure of 2 to 10 times
tolerance for 3500 NT of fission, so I am sending you my calcula-
DEPARTMENT OF ENERGY DECLAS:
y
tons «
The consecuences of such a catastrophic war in so fer as radio-
strontium is concerned would depend on the conditions cf firing so
we take three different sets of assumptions to cover the range of
probabilities.
Case & - Sirine Under Same Conditdons as Fast Tests
Q
ps
- All Ground Vired as Brevo in Castle
4
i
this Case the bombs all produce the Bravo cigar patterns and
ese contin about GO percent of the total, the rest being
seminated vorlid-wiide. it the rate of 7000 square miles and
HT fission ver bomb we get 1/17 kiloton flssion per square
ile or for normel soil with 20 erams of exchanrseable calcium in
he top 2 eS inches, @ human body burden about 100 times the
tolerance
level for large populations for people living entirely
¥
food grown in the fallout area of some 2,), million square miles,
Pbht in the rest of the srea the level would be only 10 to 15 percent
Mot tolerence. Ths | avoidance of the contaminated soil for farming
would reduce tre level below tolerance.
RTASENT OF ENERG
GLREVIEW AU jon?FEDBY;
iiLAat ttriet LEPTC
’
Tewen.pg ‘
wae: JEPte
DECLASSIEICATION RE}
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