Document 6B48Rdvnb0GeXqkxZL79073OE

'"'-''I"' -NAL Inpeyy s HEALTH . : j: i-.r-.rf Lie oii'. teve-ai e:-i ty-ser. c..-r-i .*c:T..T,.r-':aiio:u Tie raticna.t :cr i.iese ,-ev.ses reccrr-..-rt::jatiar.s wss sevesooad ,om:ly jy oar sufis as part 11 a craft prtax.cla to proposed ,MC' sur.;ira, Should re M a need to rvn and rvOTue m* ,eia *n;i:;i docu- we wctnd S gad to do to wim,a a reasons:.* period of _r.. Oe-erei Roller GAO W>LL V MOST EFFECTIVE USE cf cancer research results for agencies A study to dete.Tr_-. bow research results on the - jlt- c..-.cje.ucily of materials can be hans.ed moat effectively to neet pic needs of reguatory agencies 11 oemg conducted 07 lie General Accounting Office. Research zponsorsaip and the government's coordinating activities lor the screening 0/ potential eanear-csusmg su> stances is cam ad out at the Neuonal Csncer Institute of tat National Institutes of Health, but research is performed at many locations as implications for uwiuitnjl. environmen tal. sad oiitr exposures art ill different. The ltudy ty GAO was initiated internally, that is, aot it tht specific request ol Confrtss. Its purpoea is to examine taa prob.arts m developing sod recommending standards for screening pouibla carcinogens. and its leap* includes costs scheduling, asd interagency information flow, a GAO spoxesmsa said that to addition to tat National Career Institute. retards 1 fare:as surveyed included tha National luusito for Occupational Safety and Health and tt National Instiutt of Environmental Haalth Sotreat. Regulatory i|iecti studied included tat Occupational Safetv and Htalta Administration, tat Environmental Prottction mcy. a ad tht Cansumtr Product S*Itry Commission. .1 draft rtpert lor tgeacy review is is prtparsOon. and a final report is txptctad to bt ready 10 about four moctas. ac- cordlaf to a GAO spoittsntaa. 4lth Haardt NICIH ISSUCS ASBESTOS OUST ALERT FOR WORKERS EXPOSES SERVICING IRAKIS Ac alert constrains tat potential health baaard for persona (exposed to tsbestaa during the servicing of motor vehicle broke and dutch asstrablias was issued by tht National Institute (or Occupational Safety and Haalth oa August I. N1CSH convened e meeting of government and university loanuiu. industry representatives, and labor union officials to discuss tae present state of towwledge with respect to tats prooiem on June 11. Oats wii presented by iavastlgatars from tne Mount St&ai School af Madldat is New York City indicating 'Jut werktrs engaged la tht malnuataes sad repair of automobile and truck brake linings are exposed to potentially hazardous levels e< airborne asbestos dust Current Aspen, July 11, p. 111). Spacific brake sennciag operations studied included blow out of sutomobUe drum brake assemblies, grinding of used truck brake liaiagi, and bevelling ef sew truck brake linings Average peat asbestos sir conctntrstioas far these three ac tivities based an personal tampias takin within 10 feet of the operator were, respectively, 10.S, 1.73, and S7.1 fibers --aster than five microns in length perfmiUiUtar. An ilysis of samples of braks drum dust revealad that almost 411 of the asbestos fibers were found thenar than 0.4 microns in length. US PI / _ p-v cm itid.es ol Lie extent of iipesips tm.ss.p-j t.i s.icxcci e ersse .imng wear snowed LUt on:y 1 .e-v sna,, r.-setiop. of tfie onginsi sspestos content of tie oraxe ..mr| :j fci.-.d in cra*e anm Just. It ws presumed that this .1 y thermal aegndition ol 1he fibers during brsxmg. Tie pre sent findings irdieitt that enough asbestos is preserved to product significant exposures during certain brine servicing procedures. Tit full extent of asbestos-related disease in brxxe ser vicing personne; is not known It present because fus par ti cu.sr occupational group Has not beeo studied tyjternsual ly up to now However, a review ol the scientific Utersiure on tne association between asbestos exposure and rr.esotbefiai tumors of tie pleura and peritoneum hai reveal ed at least four cases of these rare tumors m persons wno were employed in joes involving automobile brake servicing, tne alert said. Tie environmental studies of brake Lining servicing together with observations of mesothelial tumors tn persons so employed affirms the necessity for instituting and main taining recommended eoncrol measures in this industry so tba: the .health hazards of asbestos are minimized, accordmi L,rt- f/*f-r`fu> rrd f 1 Tollowing ard5^ri??nrTrocetiurs reewnmended by / NTCSH to miromiza exposure to asbestos dust during brake end ciuteh seroong: If possible, an area shall b designated for all brake and clutch repairs. Entrances into this area snail be posted with an asbestos exposure warning sign as follows: Asbestos IXist Hazard Avoid Breathing Oust Wear Assigned Protective Equipment Do Not ftemaia la Area Unless Your Work Requires It Breathing Asbestos Dost May Causa Asbestosia and Cancer v During brake servicing, aa air purifying rwrpiretsr. either single us* or with replaceable particulate fUterm. as approved by the Mining Enforcement and Safety Ad ministration (formerly Bureau af Mines I or NIOSS. snail be norn during all procedures starting with the'removal of tht wheels and including reassembly. During manual elutes ser vicing. such a respirator shall bt won during removal and cleaning of the dutch, pressure plats and bousing assembly and during installation of the sew dutch assembly. Dust shall first be deaaed from brake drums, brake backing plates, brake attamblies asd eluteh assemblies us ing an industrial type vacuum daaner equipped with a high efficiency filter system (greater than II percent efficiency for 3.3 urn diameter aerosols). After vacuum cleaning, anyremaining dust shall be removed using a rag tossed m weier and wrung until aeariy dry. Uadar no eircumstaoeet shall compressed air or dry brushing be used for deamag. During arcing and riveting operations, aa approved respirator, as dtsonbed la (2) above, shall be wore. Goa ding (arcing) machines shall be previdad with local exhaust ventilation such that worker exposures arc maintamed at least below the 1171 OSHA asbestos standard Cl C7R 1119.1001). At a minimum. Use dust big of the arcing machine mall be remeved and replaced with tha baea ef tha higb efficiency industrial vacuum described is Cl tbove Industrial vacuum cleaner bags eoatsmiag asbestos dust and doth* used for wiping brake and dates anamnues shall 0c*w*4*"* Wty 4 4X6 BOO 0 2 97 DUP 0903604 PLAINTIFF'S EXHIBIT DUP-1549 DU 024980 OLPFENT IS?CP7 ----------------------------- - :e lesied -1 piisti: :i|j and .dPeied wu- -..-.e .'o.w-v.rg "ru ng .tsei primed -n .euers SI luificie.v. s::c 1.-.3 ccn-Jll td be rtadiiy visiPie ir.a .a -Tii. non Contains Assestcs Fibers Avoid Breiuung Dust Briithiftg Mitsui Dust May Cause Asbestcsis ind Cjnctr All asbestos wist* iftiii be disposed cf .3 icoordipee with it CSHa asbestos regulation. 2S CFR 1)10 153; ibi. During rtmavai al viev.m begs, so scprovvd respirtior. it deser.eed in 2; above, snaiL be worn. Ail floor citif-ng in irus where bnxes and elutehu art repaired sr-iii b dont whs it mga efficiency tadustml vacuum citantr as described in (]< sbov*. Grinding cireisg) maefunu mail also at citantd r.ia tuca a vacuum citantr and any remaining dual wiped with a damp doth. An ap proved rtipiraior, as stseriped in (2) aeovt. mail pe ustd curing 'As cieru-tg. Although adatrtnct 10 it above proeeduru should muumiat any eontamiaauon si work dothing, it is esquired ist the approprista portions oi it OSHA regulations on asbestos 121 CFR 1913.1001 id) C) and ()) concerning specel dothmg, chan(t rooms. 11c. bt followed. Not*: Strict adatrtnct to it abovt proetdurts should minimise exposures to meesanics during braJct and dutch nrvieif. Tint art interim recommendations and art sub ject to rurmdo pending results si cagoiag NIOSH mtarca. Htaltli Hatarde nioih aicuvti titoaroN ipvicti OR OCCUPATIONAL EXPOSUM TO LIAO A biomedical standard for blood lead (PbB) 0f 07 mlUigraraa at land par- 100 milliliters oi blood (or workers was recommended m a raport sub nuttad to the National Institute for Occupational Safety and Health. The raport, entitled `'Behavioral Effects on Occupational Exposure to Load" vis prepared under contract to NIOSH by John D. (Upks. Ben B. Morgtn. Jr., and Jobs Nicholson at the Psrformane* Restarea Laboratory, University at Louisville. Louisville. Ky. Five measures of body purdta and PO behaviors! mar sorts al task performance tre ootair.td from 211 experimental tod 112 control subjects. Tit cxparunutal subject] war* valuntesn from among workers exposed to inorganic 'ud it thsir joba la tin* storagt binary manuiaeturig comparues. Tie esntrsU wan volunteers (rom five ilnns lavolvad is vinous types oi light manufacturing. Tha data obtaload tram tha subjects indicate tut PbS u pot a sanitate rausart at changes is (uactional ptrfarmiace a piety. Aaisoierailaie acid dtbydrasa to i* blood (blood ALA-0) wu fgusd to be the meat sasaiuvs predictor al task performance. ' Piomm--idedm Aailwnele Because most 'Industrial hygienists ud gevernmut regulatory ageneu employ Pbfl as so tad13 ot the extant oi exposure, the raport said, say speciiied cbsngts ia biomodlcal monitoring erttana must laclada this spectre manure. Once tbt recommended lavtl at PbB la uceeded. the report stated that tha worker sheuldbe examiatd to datorrruna: The oecurrtnee of datariorstlon In medical staesa. k The oceurripce oi dttanoratiea is (uncueui capacity. Tha rpaGfic level oi ALA-O. - *3y si itse add.tiorai aiarj-.a'.ts.-s ire ..e vc.-xtr sr.c-.o it removed from ,-s currtnt 'evt" ol Ispesurt. lit report said. 0:r# ecammtnett,on Othtr reeammandatioM made in tit report trt u 'ollows Based on ia behavioral data and tha relationsrp btcaaao PbB and aLa-D. a biomedical standard oi 21 utiiis :i aLa-D wu rtcommtadad. k Fimeiiorul mtssuras should be utilised ia rovitirt beslt.Vmomiorini programs. Industrial testa davtioped (or morutomg programs mould meat eeruia criteria suca as va.id.iv, jtpsmvity engineering (aastbiiity, rtliaaility, and r.etisi'.ity, tentenr-etrteetual Sunnana Accsriig to tha rsoort, lass ol bearing, as evidenced bv an increase in auditory threshold, was correlated significantly with decreases in ALA*D. In addition, initial increases in bearing level were evidenced at PbB levels between .07 and 37* milligrams oi lead par 100 milliliters for all frequencies tested. Thera also wu a atgaifleant correlation between decreases m the audible duration ot a tost and ocruses m PbB. which provided "aome suggestive evidence oi auditory pathology.'' In tha put, where auditory dysfunctions wart attributed to lead intoaeitioa. the ictus! eiiecu wtri unclear. Tbt ruuits oi this study confirm that bearing losses may occur at ail frequency ranges, particularly at high levels oi body burden oi lead. The report stated that sot ooly do Ineruiw la threshold hunog levels (between 1,000 end 1.000 Ri) bear a relationship to decruscs ia ALA-O. but nearing levels at S00 and 1.000 Ks correlated positively with urine lead (P8LD and at 4.004 and I,CCS lix beating levels eorreUtad positive ly with PbB. Changes m wiichitaping, vigilance, and attentive u well as visual functions were not indicated by the data. The study data suggeet that PbB Is "neither reliably stable nor suificieatly related to the effect of exposure to provide a sensitive measure of changes in functional capacity." Blood ALA-0 wu found to be the strongest clinical measure of changes m tha functional espsaum assassadTie usefulness of ALA-D is baaed on two facts: ALA-0 is a quantitative measure cf the effect of lead on body bioehemiUT- e Inhibited AiA-D activity Is detectable la the absence of urutary responsu ud at extremely low eoneentrauou of PbB. The report noted that ngmileant dtfferencu in IntaUectual functions between study group* cr between PbB wart not found ia tha experiment. However, the report added, this should not be taken to mean that ail intellectual fusedou are enaltered in ta pesure to lud. Additional research la this aru is atedtd.jhe report said. 'e . New research should concentrate oa the ahiliry of "luded subjects" to lean new skills or to Improve performance through prtetiee ud U the performance of intellectual func tions "uader stressful eooditlcas," according to the report. Neuiemueeular Pwnceane According u the report, the strongest relsusasnips be tween body burden of lud end functional capacity occurred with neuromuscular function tuts. On the beta of correlations between performance* snd decrauat ia ALA-D. the data showed a decruse .o Cure- Caeff,f*'* 1475 bv 7kv gw.vsv al ael Alfetf*. Ixe. 3000299 DUP 0903605 DU 024981