They measured the SANDSTONE cleuds over Washington, using
Geiger scunters and balloons.
EISERSUDs
What is the percentage of recovery of these balloons?
KELLOGG:
They had a project called 3OBY DICK in the Air Foros, and the
original IBY DICK gear were rather expensive and they wanted
to get then back, so they put $25.00 recovery prise on it. Cut
of all the ones which they know came dewn in this country, they
recovered every ons.
Fvery one was sent back, either by their
sending out a search party or just being eeiled back by some
farser.
I think this consisted of abeut 20 boxes. Now they
know gone of thea went down in the cesan, but the ones they
know landed in the country—they got every one back.
KRASISH:
What was the air sampling achieved?
ow was the collection
made up?
KELLOGG:
That's a good question, and we talked abent that yesterday.
The question was, "Sow does ene go about air sampling frou a
ballcen?* Some of the suggestions were-—eince we were talking
then about the exell particles in the air being the current
problem—what is the real distribution of particle sises in
the small range?
It was suggested that one could use something
Liko an slectrostetic precipitater, as was developed by ICL
for aireraft wee.
Or, in this case, one hase the tine to sit
up thare and use a therme-diffusion separater~that one sould
even imagine using this to collect these very suall sizes..
Pe
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