Document pBV3YR5KNxDzK2LVjByK5B0oX

FILE NAME Brakes BRK DATE 1975 July 21 DOC BRK128 DOCUMENT DESCRIPTION Meeting Minutes - Occupational Exposures to Asbestos from Brake Linings - Dept of Health CDC & NIOSH t DEPARTMENT OF HEALTH EDUCATION AND WELFARE wn , CDC NIOSH Minutes of Occupational Exposures to Asbestos Just From Brake Linings Meeting , July 21 1973 See Attached 5 Proceedings Dr. John F. Finkles Director of MOSHI welcomed the attendees Ile stated that the purposes of the accting ware 1 to consider preliminary data on asbestos exposure on brake lining workers and 2 to discuss a future course of action based this preliminary information ats Finkles thun turned the aceting over to Dr. Irving Selikoff of Houns Sinci presentatioonf some of his work on this problem . . Dr. Selikoff described the background for ous Cut Cut ** be Uk health effects of asbestos are well known However the health ard associated with tobestcz in brake linings until recently has received received little attention It was thought that the intense teat generated Iron braking modified the asbestos and that brake linius Just contrised insignificent mounts of asbestos #ibera .. Mancuso 5 17 ads describo zsbestos health effects in the manufacturi of asbentos for brake lining but sparently this esusel little 08 In 1973 a case of mesothelioma was reported in This stimulated a examination of the problem with fir Mayers of UAW r Cefalo of IUI and the a brake repair worker Pr Salikoff consilted Ford Motor Company asl the grous at t Sinai a initiated study to dctermine if workers were exposed to significant levels of asbestos brake linag Dallkoff introduced e Langer of it Sindi who reviewed als cennosizim of brake linings and the breakdown products thought to occut fron hatof generated Juring braking Previous studies aut demonstrate asbestos fibers in the zouts or prevalence ay indiski by the current studies at it Sinal Noiever rocant studies at lit. Sia demonstrated cynical chrysotila osbostes fibers along with a wide range of other forms of crystalline and fibrous interials He naised that the composition of brake lininga may differ for male brake linia's Ia the U.S. and Creat Britain and products here in the U.S. may have undergone many changes over the years This is particularly importin since recent :: show that 29 of the now carrket carrket made an of these insorts Jurther research is needed to characterize the bents bents . . v . . . . ae ee eer : . eo. 434 - ' cas a -e te ' ' Wl 6 emotes i a oe 8a . . . . iw * . Fe ah hee ets eile ates eid able Ae sa ae ea a content of past and present Also that the health affects of been studied dust exposures other materials It should be in brake dust recognized love act Dr. Mohl from ft Siani reported on studies of asbestos dust exposura automobile repair shops in New York City Penk exposurus Iron 5-8 minutes duration were measured Fiber counts using the OSHA method were from 5 to ml at 3-5 fect from brake drums cleaned with Compressed air At 5-17 feet counts ranged from 2 to 4 ml at 20 fuet 7.4 to 4.8 Druns elected with a brush generated lets Airborne #sbestos 1.3-3.6 fibers in the operators breathing song Eight to 99 of the fibers as observed by electron microscopy were less than J.4 afcroas in langth indicating a much higher exposure to asbestos fibers than indicated by optical microscopy Workers engaged in grinding . operations to renew brake linings were csposed to 2-7 ontically visible . fibers Those bevalling linings had high exposures ranging fro 32- 72 fibers Dr. George Wright pointed out that earlier studies showed that 1 to % of brake dust is fibrous asbestos THE Lorincz of it Sinai reported on medical examination of 03 brake repair workers with 19-40 years of exposurc A substantial number were reported to have ray and ventilatory function abnormalities - Further studies need to be docs in this area before any conconiusions on health effects can be drawn However it was pointed out that at idest four cases of neeethelioma have been reported nationally acens wtoe mobile repair workers and this lends urgency to the probles Dr. Finklea the problem ow asked for comments \ and : recommendations . for addressing . ,,' fr Meyers suggested that several practical control measures are fascible nov Indeed these measures have been instituted in several shops His union alerted its members via its newsletter and ceveloped posters to alert workers to the problem . Nevers emphasized that t players with when he worked were most coenerative Harlovers wure encouraged to use vacuum cleaning of brake drums and where necessay masks toreduce cocposure His union has made arrangements for continusi Endiesl Reination of its mershoes No aphasized the importance ,, union presentatives practices. having 360039 to workplaces for observation of . Dr. facturers producte George Wright an industrial consultant emphasized that - havea responsibility to ascertain What happens to their after being sold to others This problem renresent a diffi- cult problem for the manufacturer and for their Industrial cant 1'3 Dr. Wright stressed belief that the asbestos industry would coonerate in overy possible way Br Wright was not entally murprisebdy the fiber counts reported and expressed the belief that one might subsequently subsequently encounter the full spectrum of asbestos disease mong grin.crs Dr. Wright expressed concct that coulitions night be LDISC and . e . . . at Cb e ew s ee rb . ee ete a iy ~~ exposures higher mong some smaller businesses Dr. Wright cautioned that theinfluence of finer size should be considered and that any extrapolation to the general population be made with caution He urged that any subsequent investigations utilize the UICC classification and the inclusion of negative controls Dr. Wright cautioned against over- interpreting the occurrence of four mesothelioma cases Mr. Saniels of IUD urged that MIOSH = Notify the Department of Labor about this problem wu lake minutes of this micating available to rublic along with a suitable press release e ow Notify other involved unions ete ow Institute an appropriate national sampling program fOr ow Institute a program of surveillance and intervention Other unions involved includes . Ge ~ United Auto Workers . . wwe TeamsterS TeamsterS ab ow American Federation of Government Employees . oe Allied Industrial Workers ~~ Laborers International - International Association of Machinists - American Postal Horkers Union oe United Rubber Workers cadet Amalgamated Transit Union Hass te. TTeransport Workers Union of America a, ff ~ United Transportation Union Suk K. Samuels of TUD urged that everyone be informed of existing easily applicable control measures Ir Movers augmented any releuse un control technology be built upon their asbestos safuty bulletins bulletins JA os Mr. Angelo locals and union Refale members of LVI discussed the in an orderly fashion need to infors affected r Cefala stated fl' " ' the needed research program should be planned and funded He offered offered his assistance in obtaining any needed support for this program Dr. Mancuso of the University of Pittsburgh at the request of the International Association of Machinists conducted a pilot study of deat records and identified in 1973 a mesotheliona case proven by astopsy of a garage Mechanic and another DREJ of pleural mesothelia .. .. millright who URS blowing out asbestos friction clutch with compressed air at a paper company Dr. Mancuso felt the nature - 830 death records SPA such that other cases of mesothelioms may exist but are unrecognized Ne spoke of the need to use this oprortunity to develop an affective industrial medical surveillance aysten Herb Northrop of problem is perspective . asbestos Ford asked that any alert bulletin place this pointing out other recognized exposures to John Dement of DFSCI presented preliminary data from a NIOsil study showing neal exposures of un tn 5 fibers during brake LIUM bling He also showed peak lead levels of approximately 4.5 20 Jurlag blowing operations IOSH electronmicroscopic studies of brake 887 dust also showed a predominance of mall asbestos fibers with west fibers being less than 1 micrometer in length At oa plant reneving lined brake sheca exposures of 21 fibers during grinding and pos of up to 10 fibers during antying of a drun containing old old linings linings linings were observod . Dr. Weaver of API offered to comunicate with gasoline stations and rele he supported further studies of the probles and gahasized the aced to use appropriate controls of UICC film reading techniques heme for El Alpaugh of International Harvester ^...rged preparation of a joint release Paul Toth of Ford offered to help with suggestions of control nme technology and in disseminating information from NIOS on thin matter to appropriate Ford Motor Company dealer relations personnel A John Moran of ETA pointed cat that disc brakes relcase airc ree asbest the general environment than chec brakes He stated tinat we the EPAexpressway roadside study could look at asbeates levels along a ailne gradient away from the expressway Ur Salikoff pointed Uut chat braking itself may be important and that roadside studies should oe consider the affect of braking eeor Dr. Mancuso was asked to comment on the needed health studies He none suggested an epidemiology study of the mortality experience of a conor of unionized workers and their families He canized are for extreme rte care in the cxnerimental design He thought such for other cancers and accunational respiratory | study should look diseases as well as ashentos disorders . et. e Mode It was comphasized that workers were eznonel to metais pisacic . dusts ashops solvents and toxic gases like carbon monoxide Iancuso recorneaded clinical studies in the ante population of workers In especially requested evaluation of called nuisance dusts which ho claims may be more hornful than now realized No capsized need to look at workers who left the industry as well as chose tho area still employed.- tr Toth stressedthe need to ascertain the role of tobacco smoking In any studies Others agrood with him Dr. Mancuso took exception to the undue caphasis on the smoking expects to the clusion of proper recognition of the magnitude of inherent health risks Jue 03 Cisc chemicals.in dusts of the working enviroment Dr. Selikoff suggested seven areas for urgent study ow Analysis of brake materials utilized since 1047 using literature survey and laboratory analysis N1953 Broad based national Industrial hygiene Aurvey to assess exposures for various occupational tasks NIOSH Epidemiologic studies of mortality workers from several sources NI05 receive the highest priority experience of aposed He suggests this ~ Further clinical tudic of 000 vorkers including . suitable controls NIOS . ww. Autopsy survey of lung anlestos burden of exposed vorkers In auto maintenance industry NIOSH -ow Industrial hygiene measures to better control exposure Joint effort of unions industry and NIOSH . ow Education of workers to hazard and to use control measures . DOL IOSH . Seloff Dr. Selof suggested . underway that there be no delay in getting this progrza . . Dr. Joe Wagoner of IOSH generally supported the discussed researcreseharch program Ee emphasized ucad for careful characterization of Exposur to aports other than ashostos and the need to assure that al research funds are used to answer some of our major remaining scientific question about the offnct of cmsure to relatively low levels of short adestos fibers William Best ofNCI offered his assistance J asked Mether or not a control study night be of some liclp