Document V3KBdZVyDrnGwYer3qz9xdaz8

W DEPARTMENT OF HEALTH. EDUCATION. AND WELFARE PUBLIC HEALTH SERVICE haTi-al ciuria tam UAIAI. Mto imouitmai mcaltm Occupational Health Research and Training Facility1014 Broadway I Cincinnati, Ohio 45202 February 15, 1967 REFER TO: V Dr. Lee B. Grant Medical Director Pittsburgh Plate Glass Company * vt-j One Gateway Center MfYTP* ' * VI Pittsburgh, Pennsylvania 15222 VI L-i J -`wJ Dear Dr. Grant: NOT COiVIE FROM PPGFi-B As Dr. Cralloy, mentioned in his telephone conversation with you on February 14, 1967, we would like to include the Unibestos Plant of Pittsburgh-Coming, at lyier, Texas, in our study of occupational health hazards in the asbestos products industry. 1 would like to summarize the main points of this study as an aid to consideration of our request for your participation. ~ The Occupational Health Program of the National Center for Urban and Industrial Health, U. 3. Public Health Service, has for many years been engaged in research into the origin and control of occupational diseases. This research has most often taken the fom of epidemio logic studies in which the worker*s health and work environment are measured over a period of time, and levels of various potential hazards in the environment are correlated with worker health so as to yield an estimate of the safe level of exposure to an occupational hazard in a particular industry. Several years ago various industry groups requested that we conduct such a study in the asbestos products industry. The need for a study to redefine the health problems associated with this known occupa tional hazard developed from reported observations of an associati n between lung cancer and asbestos. Since our agency was known as a technically competent impartial research organization we were asked to conduct a study. ' s. ' w s.. , *I Some of the companies who have participated in this study to date are as follows: Johns-Manvilla lO*0 0* H. K. Porter Raybestos-i --| B--B 00-0-3-3--4--4----| &7 i -rz