-~
Between, May 5 and mid-July of this year, Opera-
tion Redwing was conducted at thre Eriwetck Proving Grcunds
in the Faecifie.
Particultar attention was paid to the
faliout protlem in this Operaticr ard a majcr effort was
made to preduc e€ a megatonerange wespin with an inherently
smaller amount of fallcut for a given energy release.
This effort was successful.
In addition, considerable
c
attention was paid to operational factcrs
which would
minimize world-wide fallout
Thus, the totai deposition
in the stratcsphere during this Ope r éticn was held to a
-—
figure very considerably less vhan t het _presere ins the
stratcsphere before the Operacion. in Tact, we estimate
at the present time that the total stvatcspheri1c re servoir,
counting all sources, is about the same as it was two
years ago, i.e., that 12 mc/mi2 of Sr9° or the equivalent .
of 24 megatons of fission products caisulated as a uniform world-wide distribution. Durirg =he past tTwe years
, Pe I.
- the additional depositions in tre stratesphe:e
have
gt ry
ai
amounted te about 6 megatons equivalens
of fis pd
Similar letitudes elsewhere in ihe world,
being due to our proximity tc cur own weap
ty’
b
CD
perhaps 15 to 17 mco/mif is the coral to
fc
tropespheric fallcut from the Redwing
me /ind for stretosoheric falicut. we
present that a total cf ancut 22 me/mi2
be found in the soits of the mi: esteraU.S: e
-
OO OS Is
>
Mt rO oO
ww ck
ct
He]
ct
«
A
e
.
at
Ot ots
bP ae
a
th RAC Ou 0) fae
a
te Ou ste tn
a
were
cc © © O
a
{1 cv +4 the bey
vs
tf
ct
tte
Yd chos
DB Oo
ety O tts
be)
oO
be Query oP Cus
®
iM
ct,
m
@O PTba.
Lom ts0} O -IUM etry che Dm
too QY G)
tye
yy
pet * De
38 eft
@
[SQ
= uo
He}
Mhe wom a
chr O et 3
nO No
rt
WD
fa “PS LOG
my
x GGlnts
wm
be
Oct Oo
ct uM ty Ores $Y tasty fue
booiun 4-4
Te
t ts
da
v
“+
°
+
[
{
Adding to this about 3 me/mi? f
ao
NEON
U.S.
libs
uy
to pernaps 5 ada:‘tional mac / ma
‘Ge
C worlda
wh ae
- wae
‘ Tm
Be iy
bP
w vo ’
eha” 4
same general latitude as the
it isdifficult to est imate,
Fy Oy bs ‘is
rather rapidly but all the wv
(D »
ty 0 7 Cu
such weapons heave been air
This material, for the rea
w
oO ©
‘oO 'D
which is maximized by w
puncture into the strets
Rone
aes OM
et
The latitudircad
wrct
% YI'FADD
aren KS)
products tetal or 3 me mif of
90 o> 02137. This ap.
pears to have compensated apprexinat.ely fer the 10 percent
per year of fallout and the 205 perce nt per ye er cf radioactive Cecay.
In other worcs, tne
testing b5y all countries
eems to have restored tre stratcspreric res srvelr
to ap=
proximat ely the 24 megatcr. value cf two yea: Ss ALC >
amour?
in the
(24