Extracted text

OCR Page 1 of 3
COMMONWEALTH OF PENNSYLVANIA DEPARTMENT OF LABOR AND INDUSTRY HARRISBURG 1928. AUG 7 Mr. C. B. Lee, President Re: Plants using act/ive United States Radium Corporation luminous compounds 535 Pearl Street New York, N. Y. My dear Mr. Lee: This department is anxious to get in touch with all plants in Pennsylvania using radio-active luminous com- pounds. Our purpose in so doing is to take up with each individual planning the precaution that should be observed in the handling of this material. It is rather difficult for us to know what plants are doing the type of work that calls for the use of this substance. I am therefore writing you to ask if we may have the of customers in Pennsylvania supplied by your company. I should also be glad to learn whether you are using in your luminous compounds thorium or meso-thorium. You will recall that about two years ago you wrote me advising what measures you recommended for the pro- tection of workers using these compounds.