"cS
Micreszopic chservations of the fallozt collected froa the C°hS truck
rvas indicated at least two general types of particles,
One type reseubled
.Surel coral, while the second wes either partially or totally black.
The
bleck particles were ferrozagnetie to varying degrees and gave positive quali-~
tative tests for fron,
The white particles were composed of both calcium
carbonate and calcium hydroxide (or oxide),
The lydroxide, or oxide, appeared
to be uniformly distributed through the volumes of the particles,
On the
average, the black particles were individually about four tines as radioactive
as the white particles, but the former represented only 20 percent by nu wer
of the total particles in the size fractions larger than 50 microns,
The
radioactivity of both types of particles appeared to be unifornly “eee
Lnirough the voluries of the particles,
:
The bulk density of the sauples fron the Total Pallout Coll:ctor at Site
Wititk end fron the GENE truck tarpailin ves 2.6
afer,
sland soil was found to be 2.70 - 2.75,
~ 35 -
~