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April 12th,1930
Dr. Herman Schlundt,
University of Missouri,
Columbia, Mo.
Dear Dr. Schlundt:
Your wire of last night has arrived, and upon
checking my samples I find that they are not active, and I have
also found wherein the trouble lies.
In changing our laboratories around a good
part of our equipment was more or less confused - me have two
agatemortors, one which we use for pulverizing ore samples only,
while the other is used for grinding higher grade materials.
I was under the impression that I was using the one which had been
set aside for ore samples, but upon looking over my equipment this
morning I find that I used the one which had been used on low grade
sulphates. While I always make a practice of grinding a small
amount of the sample and discarding it before grinding the samples
to be tested, still this procedure apparently did not thoroughly
cleanse the mortor and pestle.
I am certainly glad that Mr. Lee sent you dup-
licate samples and that this matter has been straightened out so
promptly, although I am confident that I would have caught the
error today, for I am running an emanation determination on these
samples.
I am enclosing herewith a small specimen of the
ore sample, which Mr. Luber gave us, for test which you will recall
ban around 65% 0308 by the Ledoux analysis - 200 milligrams of
radium element per ton by the emanation determination and the
equivalent of around 12% 0308 by the alpha ray determination.
I have made examination of this sample under the microscope and am
incl taed to believe that it is 8 doctored sample. I would be glad
to have your opinion on this subject.
Sincerely yours,
Vice President.
HHBarker: RH
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"ocrText": "April 12th,1930\nDr. Herman Schlundt,\nUniversity of Missouri,\nColumbia, Mo.\nDear Dr. Schlundt:\nYour wire of last night has arrived, and upon\nchecking my samples I find that they are not active, and I have\nalso found wherein the trouble lies.\nIn changing our laboratories around a good\npart of our equipment was more or less confused - me have two\nagatemortors, one which we use for pulverizing ore samples only,\nwhile the other is used for grinding higher grade materials.\nI was under the impression that I was using the one which had been\nset aside for ore samples, but upon looking over my equipment this\nmorning I find that I used the one which had been used on low grade\nsulphates. While I always make a practice of grinding a small\namount of the sample and discarding it before grinding the samples\nto be tested, still this procedure apparently did not thoroughly\ncleanse the mortor and pestle.\nI am certainly glad that Mr. Lee sent you dup-\nlicate samples and that this matter has been straightened out so\npromptly, although I am confident that I would have caught the\nerror today, for I am running an emanation determination on these\nsamples.\nI am enclosing herewith a small specimen of the\nore sample, which Mr. Luber gave us, for test which you will recall\nban around 65% 0308 by the Ledoux analysis - 200 milligrams of\nradium element per ton by the emanation determination and the\nequivalent of around 12% 0308 by the alpha ray determination.\nI have made examination of this sample under the microscope and am\nincl taed to believe that it is 8 doctored sample. I would be glad\nto have your opinion on this subject.\nSincerely yours,\nVice President.\nHHBarker: RH"
}