RADIOLOGICAL WARFARE AGENT DECONTAMINATING STUDIES OF
REPRESENTATIVE ROOFING MATERIALS.
Manfred Morgenthau, Joseph C. Maloney, and John U. Estes,
14 October 1953.
CONFIDENTIAL
=
The objectives of the experiments described in this report were:
o test the decontaminability of various roofing materials, such as: rolled
asphalt, strip shingle, corrugated metal, and builtup roofing (contaminated
with a radioactive tantalum powder) and to evaluate the feasibility of the
following decontamination techniques: low-pressure (8 lb/sq in) hosing,
low-pressure hosing combined with scrubbing, hosing at 24 lb/sq in, fire-
pressure (40 1b/sq in) hosing, high-pressure (50 1b/sq in) hosing, hot-
water (Sellers Jet) hosing at 90 lb/sq in nozzle pressure, vacuum cleaning,
and dry sweeping.
The decontamination effectiveness ranged from 0.9% for dry sweeping
on the strip shingle to 100% for high-pressure hosing on the corrugated metal
roofing.
CRLR - 308
-
DECONTAMINATION OF RADIOACTIVE TANTALUM DUST FROM VARIOUS ©
ROOFING MATERIALS BY WEATHERING.
G2
Manfred Morgenthau and Murray A. Schmoke, 2 December 1953.
CONFIDENTIAL
The object of this experiment was to determine the decontaminating
effects of weather on various roofing materials contaminated with radioactive
tantalum powder.
Weathering of the listed roofings for 47 days resulted in the
following amounts of decontamination:
Rolled asphalt
Asphalt strip-shingle
Builtup (tar and gravel)
Corrugated steel
CRLR - 319
-
92%
LO%
33%
89%
NONATOMIC TEST OF ATTENUATION OF THERMAL RADIATION BY FOG-OIL
AEROSOLS.
:
Jerry J. Mahoney and Robert B. Price, 23 February 1954.
CONFIDENTIAL
a
The purpose of this study was to measure in field tests the
enuation of solar radiation by fog-oil smoke screens.
The data obtained
may be of value in predicting the attenuation by such screens of the thermal
radiation from nuclear explosions.
TYaa FTILD5
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pee eee
CRLR - 307