ones
3
x
nr.’
THE ELUVIATION OF RW AGENTS INTO SOIL.
=k - 241
Manfred Morgenthau and Albert H. Ferguson, 17 August 1953.
out
=
Be
fallout
SECRET-RESTRICTED DATA
Information was needed on the depth of penetration into soils
oactive contaminants deposited on the ground surface under the
OFeer on of definite quantities of water.
Two RW agents were tested
Brrrmee types of soil:
zero, but
+#
+ 500 hr, a4
wticles #
-€S stud‘ es}.
inted wit
Two liters of water were then allowed to filter through
ee ot entegrate.
ow
Samples were then taken at various
head of 6 mm.
constant
4
at
crlumm
eve
wo oe seepage water was also measured.
oror0 t53
ee
ts accther.
~
atubes,
-ompared
x 108 and
we
ATTENUATION OF RADIANT ENERGY BY FOG-OIL AEROSOLS.
Charles W. Forsthoff and John S. Desjardins, 26 October 1953.
CONFIDENTIAL
The purpose of this study was to determine the effectiveness of
2 ju7ticular bearing is the locating of the radiation source with respect
the
eerosol cloud, as indicated below:
(1) At the center of an aerosol
caval, (Z) At the edge of an aerosol cloud, or (3) At a certain distance
Cettline tre surface of an aerosol cloud.
Subject to laboratory limitations, this experiment indicated
Sst°, Sor the first approximation, a 100-ft-thick fog-oil aerosol cloud
having ac average concentration of 40 mmg/1 will attenuate approximately
y.$ cf the radiant energy passing a point 4,500 ft from the ground zero
62 @ 20 KT atomic bomb detonated at a height of 2,400 ft.
Increasing the
S+etunce Srom ground zero gives a corresponding increase in the attenuation
©. Ste raiiant energy.
vA
qua
ws
#
".
+ at ent
ee
The object of this investigation was to determine the attenuation
ty Tog-cil aerosols, of the radiant energy emanating from a point source.
>
4
of helius cg
, such
-
gcc+2!l esrosols in scattering and absorbing radiant energy so that, toa
srprroximation, the capabilities of operational fog-oil aerosols in
wee
et'enuating radiant energy can be predicted.
=
%
In a few porous soils, like
~ ‘sstes or less, the usual methods of land decontamination will remove
prartically all the agent.
stip - 242
1a to
J
eanicr eravel, an agent such as zinc bromide may penetrate to a depth of
mre than lh inches.
But because penetration by common RW agents is only
2 TUBES. *
De:
BE
esils by the RW agents used is negligible.
i
7
Ee
The volume of water used in the
Test neEEAVA LABLE COPY. penetration of most
> to 150 ‘#
The
The activity
vests was calculated to equal 39 inches of rain in one and 73 inches of rain
cor
1
A
ve ery contaminated by placing activated pellets on it and allowing them
ees tn the test colum, dried, and counted for radioactivity.
respirg
on and
beach sand, loamy sand, and silt loam.
<t container was filled with compacted test soil and the surface of
Cried
se Mike.
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