o-
a
CUMULATIVE me $r?°/mi?
A Lo
8
detardeweh B
Ly,
2
a
I
4
FMANMJJAS OND JF MAMJ JAS ON DN FMAM S JASON D'S FMAM J DY AS ON D
1954
1955
1956
1957
Fig. 1—Sr"* in New York City fallout. (High-walled stainless-steel pot collections.)
307
{
*
ae
4
|
E
aS
4
& |
E.
>
= |
s
23
|
zy
wy
,
F
a
atwallL dul
A
Mog
ioss
illadlide
IL
baalwlol
wt
d
J
a 5 oe N
DB
1956
g
:
gz
Sz
2)
saatnee
Lil ul. aaLel bo
a 4
wood
J
A
$7 o
Nn
D
+
F
i9s7
Fig. 2—Sr’’ in Pittsburgh fallout. (Galvanized tub collections.)
mM
A
1958
mM
J