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STATE OF NEW YORK DEPARTTMENT OF LABOR MEMBERS OF THE INDUSTRIAL BOARD OFFICE OF JOHN D. HIGGINS, CHAIRMAN BERNARD L. SHIENTAG INDUSTRIAL COMMISSIONER INDUSTRIAL COMMISSIONER RICHARD H. CURRAN FRANCES PERKINS RICHARD J. CULLEN CAPITOL, ALBANY DEPUTY INDUSTRIAL ComMISSIONER SARA McPiKe SECRETARY NEW YORK OFFICE, 124 EAST 28TH STREET DIVISION INDUSTRIAL HYGIENE March 21st, 1934. LELAND E. COFER, M. D. DIRECTOR Mr. A. Roeder, President A the C U. S. Radium Corp. 30 Church Street New York City Dear Sir: UMITED STATES CORP, Necrosis in bone whether it be the jaw or anywhere else, is an inflamatory process and may follow injuries, abcesses or as in the jaw from caries of the teeth. A reference to any book on surgery or dental surgery would give you the complete informa- tion you seek. Very truly yours, CT.Chaham Rogrom Medical Inspector of Factoryes, Division of Industrial Hygiene. DrCTG; HK