Document RaNppz4yjqVpXjMmgrgQa26KB

FILE NAME Manville JMA DATE 1975 Mar 18 DOC JMA064 DOCUMENT DESCRIPTION Memo - Borg Warner Talc Situation UM Manville To P. Kotin M. D. From E. M. Fenner Internal 4846 Correspondence B B Date March 18 1975 ~- Copies File & C Subject BORG WARNER TALC SITUATION Following your suggestion I talked with John Dement of NIOSH this morning The main points of information that John supplied are 1 The talc being used by Borg Warner is R. T. Vanderbilt's NYTAL 200 2 Both bulk and inspector airborne samples were taken by the OSHA 3 Their ray and electron microscope examination of the talc showed no appreciable chrysotile but considerable amounts of tremolite and anthophyllite 4 Their examination of the samples using the industrial hygiene analysis procedure from the OSHA asbestos standard and using the Stender revised definition of a fiber found approximately 40 fibers per cc in the airborne samples John Dement asked that we keep him apprised of developments in the talc situation