Document DvjLQdwGL2rMbOEVyqrkpon9B

(MMI tr# >'U *'/- E. I. ou Pont oc NeMcuns & Company HaSKEU. UktOftATOffY ROB TOXICOLOCY ANO iNOUrriWAL Medicine P.0. Box so. Cucton roao NEWARK. lUAWARE 1*711 CENTRA!. RESEARCH ANO DEVELOPMENT DEPARTMENT Decsmbsr 29, 1983 . PLAINTIFF'S EXHIBIT DUP-2442 Dr. Robin Howie Institute of Oeeupetional Medicine Roxburgh Place Edinburgh, England Dear Dr. Howie: Dr. Robert A. Bently of the Health and Safety Executive at Red Hill, Sheffield, has referred me to you concerning the effectiveness of respirator filters against asbestos fibers. He thought that you nay have done some studies on this subject. I would be very appreciative of any information that you can provide me on this subject. I an particularly interested in the effectiveness of disposable respirator filter nedia against asbestos. We at Du Pont have done a considerable amount of research on respirators including performance during workplace use, fit testing end effects of facial hair on respirator fit and would be glad to share this information with you on request. Thank you in advance for any information that you may be able to provide. Slneerely yours, SWD/dar Stephen W. Dixon Section Supervisor Industrial Hygien . S86 OOP 0907300 DU 028401