Document zxnJZ78Q5Xk6BaEg78YodBX3
FILE NAME Kent KNT
DATE 1954 Dec 1
DOC KNT016
DOCUMENT DESCRIPTION Unpublished Report - Description of Sample
with Cover Letter to Dr. Harold Knudson
East Walpole Massachusetts
oe
We have finally recae repi ortv fre om d Dr. Ernest Fullam the electron
microscopist in Schenectady covering the first 18 samples of experimental Kent
cigarettes with which we furnishheidm It occurs to us that you may be inter- . .
ested in receiving a summary of Dr. Fullan's findings
nf Ree weers
. By way of explaining the attached table permiuts to state that Dr. '
Fullam has worked out a technique whereby he is able to roughly estimate <c.60
quantitatively differences between different lots of cigarettes with respect to .
. the amount of asbestos particles coming over in the smoke In other words he
smokes several cigarettes selected from each sample and passes the smoke into a.
small acetone trap He then centrifuges this acetone in such a manner as to conglomeration
throw out and separate any suspended solid particles From this conglomeration @8::-: of solid material he quantitatively removes a small fraction to spread over his
specimen screens After the screens are so prepared he then scans them with he his electron microscope counting the number of meshes in his screaming that he
has to look at before finding a single particle of asbestos Thus and since | containing
everything up to this point is at least quantitative the smoke containing
of the highest number the least amount asbestos requires scanning of
of scre 2000.
meshes or inversely then he only needs to look at a few meshes to find . contaminated :
particle of asbestos it follows that such smoke is the most heavily contaminated
with asbestos particles In the attached table we have arranged the 18 samples >:
covered in his report in the order of quality the best sample being first and Spe
the worst sample last The table also includes a brief description of how the
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particular sample in question was prepared
oo,
ow,
-
studied the << We have carefully
data in question and must admit that it
makes very little sense
presume that you will agree As a matter of fact ' *.:.
it makes so little sense that we somewhat question the advisability of
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atn:aywy
Pall
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Dr. Harold Knudson
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1954 : an
December 1
this way particularly since it is our intention to eliminate the use of asbestos
_ in the very near future However if it were not for the money involved it
miinghotrdbeer
interesting
to
to
go
ahead
and
submit
the
additional
samples
in
question
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_.
acquire a background of information which someday in the future ESTAR
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