Letters Received to [A. Roeder], April 6, 1926

HUGH MACKAY, M.D., C.M. RESIDENCE: B 324 TELEPHONES DERMATOLOGY-RADIUM THERAPY OFFICE: A 1637 OFFICE HOURS: 11 TO 12.30 A.M. 3 TO 6 P.M. RESIDENCE: 76 CORNISH AVE. OFFICE: 215 MCINTYRE BLOCK WINNIPEG, April 6th, 192 6 President, United States Radium Corporation, 30 Church Street, NEW YORK CITY. Dear Sir, - In the Journal of the American Medical Association, September 26, 1925, an article appears by Hoffman dealing with Radium (mesothorium) necrosis appear- ing in employees of a radium plant in Newark, N. J. I assume this was your plant; if not please advise me. I want to get in touch with the Management. In discussing the composition of the luminous paint used by employees, Hoffman says it contained a minute quantity of Radium. In a foot note, however, he says that mesothorium was used in the composition of the paint: on March 10th, 1926, he confirms this in a letter to myself. On March 22nd, 1926, Cameron of Pittsburg writes me "That all cases reported have been workers in mesothoriun". On April 23rd, 1926, DeWitt P. Sixbey of your material organization, writes me that the luminous metal "contains mostly radium." Obviously these statements are not all right. I may have something to say about this matter in Victoria in June, hence my desire to know the facts, no more and no less.