Letters Sent to Dr. Herman Schlundt, April 12, 1930

April 12th,1930 Dr. Herman Schlundt, University of "issouri, Columbia, No. 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 - we 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 almays make a practide 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 deternination 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 inclined to believe that it is a doctored sample. I would be glad to have your opinion on this subject. Sincerely yours, Vice President. HHBarker:RH