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March 17, 1926.
Bureau of Construction and Repair,
Navy Department,
Washington,
D. C.
Dear Sirs:
Reference: No. 1808-A686 (s) 4/1
Precentionary Measures Necessary in
Connection with the Use of Radium
Luminous Material.
We acknowledge your letter of the 16th by Captain G. H. Rock
under the above subject.
Dr. Frederick B. Flinn of Columbia University, College of
Physicians and Surgeons, 437 West 59th Street, New York City, Institute
of Public Health, has made a very thorough and painstaking investigation
of this subject. A report of his findings will probably be available
within the next week or ten days. Dr. Flinn has been working for a
mumber of months and has investigated conditions in a number of application
plants in addition to carrying on elaborate experimental work. As soon as
this report is received, we will be glad to mail you a copy.
He has not found evidence that radioactive elements used in
luminous compounds or the zinc sulphide base could be held accountable
for the cases of jaw necrosis that have been reported.
Since the
first reports appeared, we have vigorously enforced in our Plant the rule
that the operators must not place brushes in their mouths. This is
unsanitary whether or not luminous material is ever found to be
harmful.
Yours truly,
President.
ARoeder-HM
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"ocrText": "March 17, 1926.\nBureau of Construction and Repair,\nNavy Department,\nWashington,\nD. C.\nDear Sirs:\nReference: No. 1808-A686 (s) 4/1\nPrecentionary Measures Necessary in\nConnection with the Use of Radium\nLuminous Material.\nWe acknowledge your letter of the 16th by Captain G. H. Rock\nunder the above subject.\nDr. Frederick B. Flinn of Columbia University, College of\nPhysicians and Surgeons, 437 West 59th Street, New York City, Institute\nof Public Health, has made a very thorough and painstaking investigation\nof this subject. A report of his findings will probably be available\nwithin the next week or ten days. Dr. Flinn has been working for a\nmumber of months and has investigated conditions in a number of application\nplants in addition to carrying on elaborate experimental work. As soon as\nthis report is received, we will be glad to mail you a copy.\nHe has not found evidence that radioactive elements used in\nluminous compounds or the zinc sulphide base could be held accountable\nfor the cases of jaw necrosis that have been reported.\nSince the\nfirst reports appeared, we have vigorously enforced in our Plant the rule\nthat the operators must not place brushes in their mouths. This is\nunsanitary whether or not luminous material is ever found to be\nharmful.\nYours truly,\nPresident.\nARoeder-HM"
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