Document L4DN4mp59yLvwjX1eob2yy2z

FILE NAME: RT Vanderbilt (RTV) DATE: 1971 July 7 DOC#: RTV 144 DOCUMENT DESCRIPTION: Letter to American Conference of Governmental Industrial Hygienists RE Talc Produces & Request for Medical Limits July 7# 1971 American Conference of Governmental Industrial Hygienists. 1014 Broadway Cincinnati# Ohio 45202 Attentions Secretary-Treasurer Dear Sirs' We are manufacturers of magnesium Silicate (talc) products with sales of these products to the paint, ceramic, plastic, rubber, paper, and cosmetic industrias. For the past several months we have been deluged with data sheets from various customers requiring specific information oh our products and especially information as to the hazard of using a product such as talc. We have a Threshold limit Value of 20 M. P. P. C. F. for talc, which fe a recommended value issued by your agency. We would be most interested to learn if the T.L.V is 20, then what effects would there be on individuals? Is this value of 20 baaed on an 8 hour day? Would fibrosis: or silicosis occur after prolonged p.eriods of over exposure at a T.L.V, of 20 , If any of this information is available, we would be most appreciative to have the answers. Thank you for your attention to this matter. hearing from you '.soon, v We look forward to Very truly yours, DESERT MINERALS, Inc. Thomas S, Stesssasrsikjfe Vice President - Sales . CRMC-HT-T ALC-000111