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UNIVERSITY OF MISSOURI
COLUMBIA
DEPARTMENT OF CHEMISTRY
August 29, 1931
Mr. H. H. Barker
U. S. Radium Corporation
AUG 311931
535 Pearl St.
New York City
My dear Barker:
I made a trip to Rolla on Thursday and
left there a sample of about 20 to 30 pounds of low grade
carnotite. This sample was Some that was left over from
the experiments which you conducted here in 1920-22,
This sample of ore is to be used for a preliminary run on
the concentration of the values by a new method of flotation
which has been developed in the U. S. Bureau of Mines
Experiment Station at Rolla. If these results look at all
encouraging it is quite probable that the U. S. Bureau of
Mines stationedat Rolla will cooperate in making a careful
study of the methods of consentrating the values in low
grade carnotite ores.
After my return from Buffalo I shall call
up the director, Mr. Coghill, for they expect to do this
preliminary experiment right soon.
I am today sending him another sample of ore
which seems to be of somewhat different character, at least
its physical properties such as color etc. are different
from the first sample.
I also had a talk with Professor Hanley,
Professor of Metallurgy, and he seems to think that
Dr. H. W. Gillette, who at one time was with the Bureau
of Mines and later Editor of the new Journal "Metals and
Alloys", would be a very good authority on gold alloys.
His address as given in the directory of mining engineers
is 505 King Avenue, Battell Institute, Columbus, Ohio.
If I recall correctly, he was appointed director of the
Institute but has resigned. I a.m not quite sure whether
he is the present director or whether he resigned.
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"ocrText": "UNIVERSITY OF MISSOURI\nCOLUMBIA\nDEPARTMENT OF CHEMISTRY\nAugust 29, 1931\nMr. H. H. Barker\nU. S. Radium Corporation\nAUG 311931\n535 Pearl St.\nNew York City\nMy dear Barker:\nI made a trip to Rolla on Thursday and\nleft there a sample of about 20 to 30 pounds of low grade\ncarnotite. This sample was Some that was left over from\nthe experiments which you conducted here in 1920-22,\nThis sample of ore is to be used for a preliminary run on\nthe concentration of the values by a new method of flotation\nwhich has been developed in the U. S. Bureau of Mines\nExperiment Station at Rolla. If these results look at all\nencouraging it is quite probable that the U. S. Bureau of\nMines stationedat Rolla will cooperate in making a careful\nstudy of the methods of consentrating the values in low\ngrade carnotite ores.\nAfter my return from Buffalo I shall call\nup the director, Mr. Coghill, for they expect to do this\npreliminary experiment right soon.\nI am today sending him another sample of ore\nwhich seems to be of somewhat different character, at least\nits physical properties such as color etc. are different\nfrom the first sample.\nI also had a talk with Professor Hanley,\nProfessor of Metallurgy, and he seems to think that\nDr. H. W. Gillette, who at one time was with the Bureau\nof Mines and later Editor of the new Journal \"Metals and\nAlloys\", would be a very good authority on gold alloys.\nHis address as given in the directory of mining engineers\nis 505 King Avenue, Battell Institute, Columbus, Ohio.\nIf I recall correctly, he was appointed director of the\nInstitute but has resigned. I a.m not quite sure whether\nhe is the present director or whether he resigned."
}