'/4
I/4
No.6
Mesh
Rua?
Proof
Scr
en
c
Solder
toä
2"
Sleeve.
-—
<3
DET.-—A
:
“N
(—3
/Secm
tÿg
24
Goqe
Golv
Sheeî
Mefol
/Seom
by
overlop
l
4-
/I6X/2x3/2
Meml
and
5Mî
we'd
Straps,
Weld
to
Cover.
4
-
V2
Self
Tapping
Meîol
Screwa.
“Spot
W'eld
îo
Sleeve.
_L
2
'
ÿa
V2"
L's
ben?
"on:
lôgoge
metol
with
I/2
E»
il
Bol!
and
nuî.
l__4_k
’4
..._
ià.
3'/2"inside—Tom
3"Std‘piper
NOTES:
STUDIES
OF
FALLOUT
SHOWN
THAT
MOST
RADIOACTIVITY
l5
ASSOCIÀTED
WITH
THE
LARGER
PARTICLES
WHICH
SETTLE
RAPIDLY.
A
SMALL
SHELTER
VERY
LITTLE
OF
THIS
MATERIAL
WILL
BE
DRAWN
INTO
VENTILATING
SYSTEM
HAVING
A
WEATHER-
PROOF
AIR
INTAKE
me
musu—
OFFICE
cuan
noou.
ooosenacx
on
OTHER
TYPE
wnH
z
A
DEFINITE
GRAleY
SEPARATING
EFFECT.
B'U
'
GALVANlZED
AlR
INTAKE
FOR
FAMILY
SIZE
SHELTERS
N,S
-v.Â:a
.ov.959
anaon
g..—
c-
4