than any other method,
cal additives gave consistently pocrer results
Laboratory
iency is obtained when the cleaning mefindings, which indicate that maximum effic
both material and the type of contaminant
thod is carefully selected on the pasis of
any standardized method will inevitably
having been substantiated, The selection of
respect to many conditions which might
lend to a procedure which is not optimum with
be encountered in field operations,
9,
CLOUD RADIATION FIeLD.
a,
radiation intensi~
Tho objectives of this project were to detormine the
intensity with the physical or
ty within the atomic bomb cloud; to correlete this
r in which this radiation in-~
particulate boundary of the cloud; to resolve the manne
the radioactive particles comtensity fluctuated in relation to the distribution of
activity has to the
posing the cloud; and to deternine the relation that the redio
visible boundary of the cloud.
b,
The rate meters and jet impactors. which wore designed for use by this
preject operated in a satisfactory manner,
The rate meteors indicated peak intensi-
ment was inties of as high as 2), 000 r/hr and, where the drones in whech the equip
ly the
stalled actuelly penctrated the bomb cloud, the jet impactors defined clear
physical cloud boundarics,
It appears to be gencrally true that the highest radia-
tion intensities appoar within the particulate cloud and at the same points in time
and space as the greatest densities of particulate rodioactive matter,
This will be
more evident from the graphical prosentations which will be contained in the final
report,
10,
TESTS OF PROTECTIVE CLOTHING.
a.
The object of this cxperiment vas to test protective clothing with ro»
ference to protective value, susceptability to contamination, susceptability to decontamination, and its handling and disposal under field conditions,
b,
Preliminary laundering decontamination methods developed in a test pro-
gram at the Oak Ridge National Laboratory were tested under conditions of ficld conbamination from atomic weapon bursts,
Normel clothing materials showed little dif-
ference in contaminability except that water=repellent finishes appeared to pick up
more contamination and to resist its removal to 4 preater degree than non-water-repellent materials,
Contamination duc to fall-out material was removed as readily
as was contamination by surface materials which had beon activated by the detonation,.
Contaminated clothing was decontaminated satisfactorily by Laundering with both al-~
kaline and withacid cleaning agents, using commercial—type corrosion-resistant metal