Document jy6JgXDQxoManKppMnQGz6Owy

Johns-Manvill* Corporation Ovw. Comas KST7' Saner *ea Piwasn hmi. SWey sro EfMcnnM May 6, 1980 To: Jon L. Ronzan, M.O. Clifford L. Shecklar Bilton Lewinsohn, M.D. Hans Weill, M.O. Gentleman: I'am enclosing for your information a copy of a latter I just received from J.C. Wagner. I had asked him about his studies with man made vitreous fibers and also whether his studies with asbestos could be used to support OSHA's proposal to reduce the asbestos standard. All good wishes. Note: Could you send me a copy of your presentation to EPA Conference on substitutes in July, in as much as it will be a TIMA position paper. ^' ,:pO#/*Y 444-1 * **C PKECTCCQK UAireooa absr^rM. '. ,*.. nxMtn s. oam. ny l?th April, I960 Dear Paul, 1 Returned to ay diisJc to find the happy not* froa you! The inhalation e:qseroents on aon mad* vitreous fibres have not produced fibrosis aa I"have-beuji'*ccuaTd`^5fitjitinq7~but~o far/we nave produced is minimal reaction to duet, which you have also daaonstrated occurs with any mineral dust after it is retained in^he lung for .a long enough period. The second question - your interoretatlon is as good as sine. \ie did produce 2 mesothelioros in rats after a single day's exposure, and we did gee a few aesothelionas with the Canadian chrysotlle. I cannot see that these findings can be interpreted for regulatory purposes. Bope this partly answers your questions, for a full answer you need the Delphic oracle! Kindest regards. Yours sincerely. CtAji J. C. WAOSTR Dr. Paul Kotin, Senior Vice President ` Health, Safety a environment Johns-Kanvi He Corporation Ken-Caryi Ranch Dernier, Colorado 80217 osa PLAINTIFF'S EXHIBIT/ 02 201 1SS3