Document 067VJxQXDVba236kRXr6VMN7k

FILE NAME: Z< DATE: D DOC#: Z<3 DOCUMENT DESCRIPTION E/K^,DDKZ ZZZ^ 4.~. , * 0c:0: ....Cl) t - , ~ 8 Cl) S = = ::r:: Cl.) :z. .0 - ~ c Z ~ \0 t- ~ 0....-.. '- 0.....\. '@ ~C';$ ~ 0 .....(I'l Cl) :c:::l ~ Department of Ilulth. Educ:aUon. and Weltare CDC. NI051l K!aut of Meet1na on Occupational Expo8ur~ to Ashtoa Dust Durina Brake aed Clutch Serv1elna C1nc1ncat1. Ohio Much 19. 1976 MInute. Prepared BX JoJm D.llme Attenclee. Sa. A.ttac:hlunt Dr. Bobby Craft, A.ctins Director. Divilion of Surveillance, Ha&ard Evalua- tion. and Field Stud1 KIOSK wolco.od the attend.ea. Dr. Craft 5tated that the purpose. of tha .aat:it)~ vere (l) to review the data aVdlable coneernina a.boato. fibar expo_uras durinl brake aad clutch .e:vicina (2) to explore tbe r ....rch potential for furtber epldem101o,ical studies of ,araae machanie. and the .1anifieance of aueh atudi with respect to asbe.tos diee 0:101081 (3) to d1.cu.. wbat further cour (a) of action NIOSR should tAke to aure ainiaum ..b tos exposure. to ,arAse workers. ao tben 3sked Dr. Irv1ns'Sel1koff to .u.maria. current knovledae concernins . I aabe.to~ ~o.ur.. to ,ara.a ch.Dies and relatad health effects. 1 . l Dr. Selikoff briefly auaaar1:ed env1roGaaDtal and aedical studies ;on- ducted with Local 259 of the United Auto Worker. and the New York Auto- mobile Dealera Aa.ociatioD. The studies demonstrated peak .,b tos f1ber exposure. of 0.5 to 35 fibera/cc d.tar.1nad by the .tandard OSHA phe contra.t coUfttina a.tnod. Us1n& electron microscopiC tecbn1quec. 1t whown that 80 to 99% of the ftbara wera .hor~.r than 5 ~ 1n leaatb. Medical exaa1Dationa of 93 brakG repair worker. with 10-40 ,&ars ofaxpoaure de.ouatratad ubstantial number v1tb ~-ra7 an~ p~l .oaary fUftction abftOl'Ullt1ea. Dr. Sel;lkoU eU:lutcd that IIOre than on. atllion workers .re potentially exposed to friction product weAr dusts. Ho alao presented data .b~~ns th4t iD 1920 there wara epproxi- ..te17 eiaht adll:lOD y.hJc~ OD tbo r~a~ai howevar, iu 1974 this number ! DEFENDANT~S fF,//~E~XHIB>IT/I)o~f ee8183 PRODUCED BY FORD bad increased to app~ox1Dately 130 mil110n. Dr. Geors. Wrisht, induotrial medical consultact. polnted out that many ,araae mechanics pertorm grinding opera;ions ift addition to clftina of the brake ~ear dust.. Tbe workera ~ould be expoaed to longer fibers ADd thus would be expected to demonatrate the full Ipeetru- of a.bestc. related diaa.a. Dr. wrlaht auggelted tbe followin& points be considered with respect to future studi.. of brake mechanica: 1) A cohort should ~e eatabIi.bed exposed solaIr to the Guat releaaed frOll "\I..d" brakes by bIOV1113 Or brush1u,. Theae duau contain broken down fibera. r.oi=-, etc. Piber. pr.a.ut in th duets are laratly ahorter thac 5 um witb soma proportion altared to an aaorpbout fiber. Such a atudy, if properly coudueted. could answer queltion. cODe.miaa the significance of exposurea to brake wear du.ca aDd tha blo1olLcsl aiaaif1cance of ahort ver.u. Iona aab.ato. fiber 2) Since only chry80t11c ha. been us.d for a.beatoe brake 11atD, - a study of brake mechanics would provide an opportun1tl to study industrial Caa opposed to minial and 81111n&) ehryaotl1a axposures with reapect to the development ot aothelioma.' Dr. Wri&bt 8u8s..ced that low priority be ,liven to anythina other than a aesotballoaa survey. 3) A careful. aoph1aticA;ed study. of brake cl..ni~ methode and work pra~t1cahould be conducted to determine the opetmua work practice. for r&ducina ~oaur... Dr. Wriaht atated that in his opinion the chances of de.lgning 4 study to determine does-respon relationships 1. minimal. Dr. Craft aaked the aroup to consider tbe p08sib111~ ot defin1D&~ au1table cohort expo.ad .01ely to brake linin,lvear dust (.ho~t fib.~a) for p~rpoa of health studies. Mr. Jobn Marah. aaybeatos-Manhattan Ineorporated. pre.ented data ahowin. tbe number of workers in various tYPe8 of aarase.. Tb data were aa followsl CaraSe !%e- Service Stat10ZUJ Independent GaraSe8 New Car Shope neee Shop. Approx. , FadUdea l$1~.OOO 108,000 . 39.000 21.000 Av. , MtdlAn1Cf1 Per Sh02 2.5 2.7 5.7 7.6 % of All !raka York Pedot'lIu!d 50% 30% 181 1-2% -2- 008184 PRODUCBD BY FORD Mr. Lou Reff, J.C. Penuey, proaented data coneemina asbeatoa f1ber expoaurea in 360 fac111t1e~ operated by J.C. Peoftey. Mr. Reff indicated . tbat.us~ns e solvent veshins technique, a zero f1her exposure (phe contrast counts) could be obtain.~. Small expo.ure. could be detected with sloppy work ptacticaa. He 1nd1cated that aamplina of the ambient air outside ol the I.~.a. facility wa. done to obtain background levels. Jobn Dcment of NIOSH preaented prellm1bary data concerDiDg tim~1.hted averaae aabe.toa to .,rlse br.la .echau1c.. Tbe data shoved t1aeweilhted-average expoluras to ba lenarally below 0.2 fiber./cc (pha cODtrast count.) evaD whan uains campraa.ed air blawtna teehn1quea. However, exposures up to 10 flb.ra/ec vare obred in ODe f.cili:y &rind1na new 1in1na" Ua iDdiQ4tcd the need to taka tbe expo.ure. into aCCOUQt when daf1nina a population for an epidea101olic atudy. Hr. DCllCIlt alao indicated that NIOSH electron !U.croscopic atu.uaa of brake wear du.ta demonatratad aost fiber, to ba 1... than 0.5 ~. iD laDlth. Hr. Dement requested date ~rom attend coneemina pr..ent and paat use Qf new linina grind1na m.thoda. Hea.ra. Jaeoby and Tha~k.r, Deleo-Morain, indicatei that radiu. srind- ing in the saras. should QO lonl~ be a cOGmOD practice. Hoat manu- aetunn are pra.ently "crown &r1ndift3" new linin" thu. eliJa1Qatin; thi. practice iD'sara.a Dr. Sol1kof .ddrd tha problem of defining a cohort expos.d only eo ahort f1bar.. aa 'Ulae'ted tbe poibility of chooatna ,arase, 1n approximately fix 14ra8 eit!.. for .tudy. Lara_ shOp employe.a. municipal employees and taxif1aet workera could provida a larle and .table work force. In addition to m&d1cal studl of garage employee Dr. Selikof! au&&estad studi of themineraloiY of w.ar dusc_. studie. of worker aBbe.toa lung burden and animal inhalatioft experim.nta. Har,h John indicated that'informica sara,a mechanics of the hazards aociated witb exposur.s to wear duats and an.oe1ated work practice . to m1n1mi%. tbe exposures is an .anoraoUI problem. Raybeato.-Manhatcan 1~ placina warntDl slips in brAka linin& box in addition publishing aerviee manuals and various iu.format.ion pa.phleta. Dr. Craft indicated COQCerD that the NlOSU Alert. i uod on Auguat 8. 1975. had not reachad aore gara,e mechanic. and ,ara,. operators. Dr. Cralt aUIIced that NIOsa might con.ider pub11.h1n& A booklet for saras. work (brake rebui1dina) through it. . . .11 hu.1u taak force. Dr. Selikoft clo.ad hi. re=arka aUla tini four areas of conai~er&tion by 91051. 1) HlOSS should request inform.tlOD Oft friction product u.. includinQ aecular hiatory of br.ka mauufactur1DI aDd formulations froa 1Ddu$try, -3- 808185 PRODUCED BYFORD 2) NIOSH should continue 'tud1., of exposurea to asbeatoa fibers'durins brake rebu11dins 1ucludicI determicat10na of peak and tim~e1ghted average exP0.urea. 3~)1toAloBpYrevshaolaunldcebsetu~doyudiuncetleudd1amnaonaa-raayc.ohpourltm1o0n0a0ryafaurnac,t.iowuoraknedr.s.putUNMIOSBJ should a180 conduct six .ofttn faa.1bt11ty study to determine if an aperopr1.t. cobort fo~ rttiR;;;;;,!; mgtre1Jfy "HiE coUld be dafi~ed. Ti8sue a.be.tos l1b.~ burdao studiea 8hould ha sona1d.rad. 4) NlOSH should continua develop1ua approache. to adueate exposed workers, Dr. Craft thanked the atteade for thair participation iD the ..et1na. . - aDd indicated that NIOSH WGuld consider further ~8aa.rch in this area' vith ra.pect to ono~ni research, eU~&Dt study pr1or1t1aa and avail.- bU1ty of resdureu. . ec: All Attendee. Dr. Fiull Id Ba1er Dr. W.&onar Dr. r. Hanculo- An&e1o Cello -4- 008186 PRODUCED EY FORD !!!1!. .Dr:. enft De=y J)obb1a Paul JolmaoD Jobn Dement Richard Laen Phil B1ubaUIII R. T. aqhee Dav14 Gr:~th Clancy Wuellner Glen Jacoby Lon Tbacker Joha B. Hanh Ro..... Vabeke Oura_ V. Wdaht. Lou Rail Ift'1n; Selikoff V1lliaa B. Kl'ablt A'1'T!Nl)!!S AFFIl.IATION , Direccor. DSElFS - MIOSS ~. Dsms - NIOSi DSIlUS - NIOSH DSl1EFS - nOSH DSB!FS ... mOSH DSJmFS - mOSH 1>PSI - mOSH DBIS - NlOSD De1co Moraine Div GMC Delco MoraIne Div GMC Delco Mora1na Div GMC .~. Raybeatoa-Hanhattan, Inc. Fod Motor: Co. lDCI.pendent Couw.tut (a Inse 'Put ,of JH) J. c. Peamay Mount: Sinai Can_ral Motors Corp. PHONE N11K!ER 513-684-3541 513 ... 684-3255 513-684-3255 513-684-3191 513-684-2761 513-684-232.5 5l.3-684-2591 513-684-2622 513-445-42.44 513-445-4413 513-1045-415 203-371-010l 313-322-2630 3Q3-733-6313 212-957-7625 21:-87&-1178 313-S75-2791 .. 008181 PR.ODUCED BY FORD