Document VGGY54jZmNpnM80LJvz7GyER4

FILE NAME Packings and Gaskets PAG DATE 1993 Jan 20 DOC PAG050 DOCUMENT DESCRIPTION Letter to Chevron with Handwritten Note Mr. Robert T. Cheng Chevron Corporation P.O. Box 7924 San Francisco California 94120 Dear Mr. Cheng ExposuretoAsbestos Some time ago I read entitled with interest the 1991 paper you authored with Henry in McDermott Ocupational from Asbestos Gasketswhich appeared Applied Occupational Environmental inspired Environmental Environmental close look at some asbestos informative It to a Hygiene I found it to be very sheet gaskets to see encapsulated if asbestos fibers were protrudifrnogm the surfaces or whetht ey h were e fur lly in the binder The results were published last year and copies are enclosed ' Our work shows that not all the asbestos fibers in the gaskets are bound in the organic matrix and are therefore available to be abraded from the surface It eliminated concyol ur u cons clui sioo n tn hat potential short term high exposcuanrbee eliminated by working with the materials in a wet condition as you would with friable material gaskets containing Were as identified I noticed that your paper did not include information about analyses which identified the such analyses done If you still have the air samples and would like some additional information about the of fibers present Comparison happy analyze few by the would present would I Comparison to charge Comparison of PCM interest me a NIOSHNIOSH 7402 TEMTEM procedureprocedure is TEM counts of asbestos fibers is ooff particularparticular If you are interested in pursuing this effort please call Sincerely Jain Willette Willette JRM EnclosuresEnclosures MilRl.eMitlltete te Ph.D. Executive Director Dear Dr. Thank Mil et e Millette , for yo for u this copies copies of your paper I MILLETTE CHENG120 5500 Oakbrook Parkway 200 Norcross Georgia 3000- ~ Robert T. Chan Telephone 404662-8509 Facsimile 404-662-8332