Letters Received to H.H. Barker, May 29, 1930

TREASURY DEPARTMENT UNITED STATES PUBLIC HEALTH SERVICE JUN 2 1930 OFFICE OF INDUSTRIAL HYGIENE WASHINGTON, D. C. AND SANITATION Room 1-123, "C" Bldg. 16 Seventh St. S. W. May 29, 1930 Mr. H. H. Barker, Vice President, U. S. Radium Corporation, 535 Pearl St. New York, N. Y. Dear Mr. Barker: Please accept my best thanks for your letter of May 26th, which gives me the information I asked for. I am now bothering you with another question. We have finished our survey of the various watch factories and are now working up our results. These are very in- teresting and I think will enable us to form some defi- nite conclusions. From information which Dr. Schwartz and his colleagues obtained while in the field, it appears that the radioactive paint has been in use in watch factories for about 16 years. What I wish to know, and I think you are best qualified to give me the information, is from what companies these factories have been obtaining their radioactive paint. As I understand it, at the present time there are two companies, namely, your company - the United States Radium Corporation - and the Radium Dial Company (Radium Luminous Corporation, Standard Chemical Company) . Are these the only two companies from whom the factories have obtained their radioactive paint dur- ing this period?