STC
eeIRSETtCE gi6EsteaBarear aRae aaolOda al
TIAL
FALLOUT AND TRADITIONAL CIVIL DEFENSE
To gain better insight into the civil defense problem, 1 day from the 36-day sample
was drawn at random and the local radiation picture examined in more detail.
From data
supplied to the Washington Survival Plan Committee by the arc, close-in fallout (preamaon Last-tree-down line
/
ote ott, Rescue penetration line
Maximum time for survival
{in ordinary shelter) |
,
—«
/
./
7
e
i
LS
:
Rts 29 and 211
°
:
.
q
aS
\
.
‘
“XS
AOR
®
e
/
a
a
-
|
(ft
;
o.%
1
/
Z
SS
eT
\ \
‘
“
, 7
4
o
‘
[
¢
|
°
0
{
+
|
Tf
g 7
g
)
“s “enens
:
i
}
160 miles
/
ant
Cf
15 Dec 55
e
Ave
|
’
For winds existing
90°
Central
-
a,
‘
ge
3
oe
f:
~,
.
|
»a
© ST
Ry J
«lat days
:
r
.
15 months
XN
4
BS
2
N
t
.
‘
.
7
td:
/
Sy
. ~, &
=
—_
/
,
[
— © om,
°
°
Sf
Ground zero
X%
.
a
wae All-tree-down line
2
{
4
i
wiles
“
Re —
3
o
lig. 39 —- Radiation Effects of Two 10-Mt Ground Bursts on Washington
sumably very heavyparticles from the stem and cloud) was superimposed on the previously
computed fallout contours. Figure 39 shows the results of this calculation. The solid
lines indicate the numberof hours a person can bein shelter attenuating 0.9 radiation before
acquiring an LDy dose.
These times range from 3 hr at 2 to 3 miles from gz to 48 hr at
7 miles from Gz, and do not include any direct radiation that may have been received.
54
|
ORO-R-17 (App B)
|