Document ybGrzmpGNKqk0wmV3jgayV46

30 January 1968 Mr Jeremiah R Lynch " Asst.Chi of, Environmental Activities Field Studies Occupational Health Program Department of Health, Education and Welfare National Center for Urban and Industrial Health 1014 Broadway Cincinnati, Ohio 45202, Dear Mr Lynch, 1 am writing to thank you for the moot ueoful information contained in your letter and attachments of 17 January 1968 regarding brake lining decomposition. Our studies so far are in agreement with your findings in that wo have been unable to find fibres during brake cleaning in service garages using thermal precipitators and membrane filters. With many Lhanks. Yours sincerely I)r 1) E Hickish Industrial Hygiene Specialist 33i>0 Boom 1/163 DKH/YJS 8006 1197 PRODUCED BY FORD SCF-FORD-0552