Document ppEQ9BRn55oVVpQ11gOyQBvvd

FILE NAME: Ford (FD) DATE: 1971 Feb 5 DOC#: FD108 DOCUMENT DESCRIPTION: Letter to Jody Glick from Ford Research Staff Barry Castleman's FORD File CD-ROM Document # FORD w/c = with cover memo 1 DATE 0=undated Type of Document published article from journal trade publication advertisement article published report from conference published abstract from conference unpublished internal report unpublished presentation meeting agenda minutes report letter memo government report industry warning information book excerpt le g a l___________________ Other Ford Motor Company Februar'/' 5 , 1971 20000 Rotunda Drive Dearborn, Michigan 48121 Mailing Address: P.O. Box 2053 Dearborn, Michigan 48121 Miss Jody C lic k 9321 3 t . Andrews' P la ce C o lle g e P ark, Maryland 207^0 Dear Miss G lic k : In your recent le t t e r to D r. Ference you requested inform ation p ertain in g to asbestos usage in fr ic tio n m a te ria ls. Ford Motor Company, u n lik e General Motors and C h ry s le r , does not m anufacture any o f i t s f r i c t i o n m a te r ia ls f o r b ra k e s o r c lu t c h e s . However, we do have th e in fo rm a tio n you r e q u e s te d . S in c e t h i s req u est was f o r your S c ie n c e F a i r p r o je c t, T w ill send you only th a t inform ation which you could not reasonably expect t o fin d in a la r g e p u b lic l i b r a r y , a lo n g w ith some key re fe r e n c e s t o aid your lib ra ry research. - , Brake l in i n g and c lu tc h fa c in g m an u factu rin g methods and fo rm u la tio n are u s u a lly considered to be p roprietary inform ation by fr ic tio n m aterial m anufacturers. However some d e t a ile d in fo r m a tio n may be o b ta in ed from th e Chem ical A b s tr a c ts on f r i c t i o n m a te r ia l p a t e n t s . I have e n c lo s e d as a background on .t h i s s u b je c t a copy o f "Automotive Brake L in in g s " . Autom otive c lu t c h f a c in g s are made by a s im ila r p ro c e ss t o some o f th e brake fin in g s ; e ith e r through re sin im pregnation o f asbestos-based yam s and then winding or w eaving, or by making a "wet mix" o f r e s in , a sb e sto s, and f i l l e r s and then p ressin g to shape. In gen eral c lu tc h fa c in g s co n ta in m ore'rubber and c la y , use lon ger fib e r a s b e s to s . The a sb e s to s used in b o th b rak e and c lu t c h m a te r ia ls i s o f th e c h r y s o t ile type and comes p r im a r ily from mines in Quebec, Canada. In fo rm ation on t h i s form o f asbestos can be obtained from th e Asbestos T e x tile I n s t it u t e , Quebec Asbestos M ining A s s o c ia tio n , and m ajor su p p lie rs such as Jch n s-M an v ille Corporation or Asbestos Corporation, Lbd. (Thetford M ines, Quebec, Canada). T e c h n ic a l in fo rm a tio n o n 'c h r y s o t ile a s b e s to s "`i s in theT l i t e r a t u r e , ' g e n e r a lly pre-19^5^ w ith the b e s t papers by Mr. M. S . B a d o lle t . ! 011987 PRODUCED b y f o r d Jcdy C lic k 2 Februaiy,' > , I'T Jl Tem peratureo in v o lv e d i n th e o p e r a tio n o f "brakes and c lu t c h e s may be c o n fu s in g .et th e f i i c - x C n inuoric.ice ij.a s n tem p eratures approach, and sometimes exceed.' 1000 JC . The brake lin in g or c lu tc h fa c in g b u lk tem pere.ture, nonna! l y is " b elo w 2 0 0 3C , b u t may r e a c h 500C w it h s e v e re u sa g e arm: g e n e r a l l y marked by heavy smoke, rapid w ear, and "fa d e " o f f r i c t i o n . P o rtio n s c f a' p rese n tly un p u b lish ed paper "Wear o f Brake M a te r ia ls " have been marked to provide added background on brake tem p eratu res. The a sb e sto s e fflu e n ts from brake and c lu tc h o p eration are c u rr e n tly r e c e iv in g a g re a t d eal c f a t te n tio n . Mr. Lynch c f the N atio n al Cen ter fo r Urban and In d u stria l Health has published a paper in the Jo u rn al o f A ir P o llu tio n Control A s s o c ia t io n , D e c . 1~8, V o l . 18, No. 12, pp 824-826. S e v e r a l r e c e n t papers on asbestos epidem iology have been w ritten by D r. I . J . S e lik o ff, o f C ity Univer s i t y o f New Y o rk , M t. S in a i Sch o o l o f M e d ic in e . Samples o f a s b e s to s a ls o have been e n clo sed . They have been sealed in p la s tic bags fo r your p ro te ctio n . I f you must open the b a g s, dease read the enclosed a r t ic l e by D r. S e lik o f f f i r s t . In d iscrim in ate h an d lin g o f lo o s e , dry asbestos should he avoided. I hope th a t the in form ation su p p lied w ill provide an adequate start, fo r your tim e ly and re le v a n t research p r o je c t. Should you fin d fu r th e r need fo r inform ation, fe e l free to ask. S Lnc e r e l y you r s , e n clo s u r e s eg Am ol d Anderson C cic-n tific Perearch S ta ff 011988 I j PRODUCED BY FORD