Document B51zaZo0RL2jrYX9x0ZrRzrM8

' National Friction Products Corporation 1441 HOL-LAKiD STREET . * P. O. BOX 327 * LOGANSPORT, INDIANA 45947 TELEPHONE (219)753-6391 ' October 27, 1976 ,, \\ Mr. R. W. Rosenow, Manager Airflex Plant Eaton Corporation 9919 Clinton Road Cleveland, Ohio 44111 .. N, ... `1 Si / Subject: Asbestos Dear Bob, This will confirm in part the phone conversation'of.jtpclay'on this subject. V-' }' Attached is the reference to various tr^risformatjohs that occur when asbestos is heated. Incidentally, tHere-;Vare'^everal different types of asbestos and the one used in friction :.n^!t^rials is referred to as chrysotile. f\F` On page 3, the bottom paragt^phFof tf% Ipft column, there is. direct reference made to the transformation^. Amplifying on this somewhat, once the water of hydration is lost. (and it .-starts occurring around 700F and i:s complete at 1000F), the Remaining .material is no longer chrysotile asbestos and would no longer be subject to the OSHA and EPA restrictions. This is referred to dird.ctly- in the Caterpillar report where, on page 15, reference is made to heating asb&stbs fibers (to 900F). This exposure destroys the fiber and then mechanical rubbing the residue would result in a powder with the '^article jsize being less than one micron. Thus, neither OSHA nor EPA^ would cover this since, first the material is no longer chrysot5ile^asbestos;:and second, even if it were, the particle . size is considerably .smaller than the 5 micron lower limit used by both government ::agencies_.p;.,'V I.am':--.hope5fui'...that this information can be useful to you. Best "regards E. 0.'Sydor General Manager .. . v ^FEITS: jm /Enel. cc: M. Collins * E. Figert '' FAW 17068