Document wD8ZO5eBboLDZOBnnznZVp4o6

FILE NAME: WR Grace (WRG) DATE: April 11, 1963 DOC#: WRG204 DOCUMENT DESCRIPTION: 1963 Report of Industrial Hygiene Study of Zonolite Company Belcna, ltoutona pivinion </? i u m ', 2 c o t?jm <v Riixsrr oii /m y w s m m insiDEKS OTmr f\n fiFI\TTv E0r.0?>IE! (XjC^riY iVv.lwT.iv.V...;. V*' . Condu:rted L y i rt..**.. .cu |II..W.HI> Benvolli F , Viako IVA et ritti I g ie n e Englneor Plviscm ai1 Ficcasi; Control. Dictributioni ftffl ro fcrt io confi dentisi ci:. in !.:t Yci* d io tilb u tio oxecpt tc tuo KamgesKmfc o f tl:o IloiiOlito t&a&aay Porticipant Busnel Hendrlclw ( va A prii 11, '.iV'j cu hliu-,trini L-tudy vau iado of th JSouolitc Cocmusiy or LIMy,, V r .'A vea to '.'( .t v r U- - >?-'_ dryreo of' c~ pU.xi.R~-:; o f proviouo rccc-.t..julati.cn:. cu wa.-.r l tho o.MSxiicrablo duetinaie 111 tiri dry usili ccctiou o f tho pii'u t> Ivo ntudy imo iittdo 5>u t.a c;-:::;;.:v,y c f n Pcpr*eoontntlvc o f tho inclite o?c,u*j aation and vlth tho uauifittmca of Doctor Ruesel ilontrlcko, o f tlie United States Public liealtfi Servici;, Salt laico C ity, Utah. Tho aethodo o f collecrtion o f ciampico and analyoic of." thr? varie cut ccspcneviti:' vere ifcttio v.: cavee udod by tir United Ctutoo Public Pe.fLtU /.kivlue and otlivr >'-j r i t i a l cdo.ii.it.-i `ilio addltioaal ovaluation o f tho or- h r u t o 'i cantoni; o f IL';; duct f eei.tly boir>" dona by tho United Stater; 5ubilo }av.U h f C-:ev;prtiaru. uealth IT.vi sica in Cincinnati..,. vaio, `lice re s u lto o f t.his cvh.uu.iicn v i l i to t ijcpear in fcfclo rep o rt but v i l i be' repo-ted uvea r:- coca i.u ino ir cveilal5i c u \ /Ajlloub a 1 '1 ' ' ' `Pio epeurtien o f tuo plimt ino eacc-ntially tliat g dcoerlbod in pruvlouu reporte and v i l i not to repeated Itero cxcqpt to cvaluate tho over 0.11 duatineco on. cadi flo c r end cortola coasnanto concerning fiunt producors et tho .centioas irated. In generai, tirer eppeaved to be l i t t l e , i f ony, ixprGv.nv.oiit at eny polnt in th plcnfc u:ecpt perkapa at t-ho vo li grinder, ubero a ulgrJ.fiee.ni reduciIcn in usi; ccr.tributcd to th ic arca tao becn ccco..,-;lifihcd* G p ccifically, tao voajcr &usfc-x'rcducBg arcua vero an fellcv.it Pa v c u:.. . vbc ver. a vo v,..vy liuopy. Ito urpcavut iverovo*- ,.. . ' l,. . elbkuv'o. 1 ; cere:: 1 u f .. : r .j - .i . v..-.' i.1..\ ...j A! alei.i< urea vere ru.i g...v1 coiu.lieiG-a l-.o i:.. y i w : ...ir l-K.pr fhe Ealfdedt i c divutov : :.i.vuu::s to bc epparcui in ib is arca., liie reveen badia vere o ff cerne ccvcc-nc* Blucb duoti- rrii.'ii u i tho feavvh flo o r contribute to tho upper f `,c:r.;0 \ " i i v:;:,, i.. ri.: i -..vi. producers in thlo arca vere ut uuaecr threo coccuTtratr bin and tho b e lt tranafel point to the ccncentratoz* bin . Duct Iodio ileo a t nunbor tro cerei/ conveyor and tho high grade equipment in front o f Ito. 3**2 ocrecn. '\ Thic area vac ex trm ely d ir ty , and tho baclco are o f f ecae o f tho coreano. . Second I-lcni* -Tiie duct to tho high-grado Ixoianor m ill had a iiole in i t , inerting exhauot capacity. Eo. 3b ecreea e t i l l leaked badly, and tiiero van no iB^rovemant in t h is urea circa luct ciudy. 'Iho ta ilin g chuto by tbe .high grade g ila a le y and near screen 3^ van also a consider able contributor to o v e r-a ll duotltuiaM. The feed, to Ko. 219 b e lt van a bail dust producer and oliould he en* cloned end vontilated. - '; <\ f, l i ret 1 1 a Much duct vao produced at tho liigh-grede dryer. I Leaks fi'ca a l l pipes should bo otppped and ventilo^- tion applied ubero dust cannot be controlled by stopping. . I ( ( '"`i - - ' (Ccntimi-jc^ VLio food to belt l.oO A v :io C3.fcxv:x'ly dusty and neoda ventilation cav C;oc3oc.ivro. Tha blch-crado dryci* van u>t opcru'tiic daring tho luot tituiy and vau \ 'o t ac~ counted fo r iu'iiv that atudy but should be ciy.' con. eide.rable attention. lio. 6l8 elevator oa ti tu fourth flo o r leaked badly. Ttere vaa no excuse fo r these leaks except fe r poor operation. Lb. ' 0 i elo \; tor c .. tho fli.v t flo o r aleo lt-ahcd duct badly. The m;'.! Lad lot been cerjpletely ro- . .v , 1 <U.U.J. . 1 >) . , W 'lr. tilo ut leu c f t ' u c a on a ctc:;::lr; 1 by J . ..i i v,ii : . .-..I .i.5 . .. an 1.vcovvy: tiro c f abort a,,`: ; ,.'.-i-;r.c,, I,, cl. v.vl-i Lc r j tl; vu ;:;u: .. dll. .--t'. r parttelco can to ue pt'iiited x; . i) liu:y tiucuc t.a;d arc iv, opt to be o f physiological nig- nificaucu titoa tlooc buvo 10 rJcvoua. In any coco, over Co percent o f the particle. vero 5 c-icrons or lena, end 75 percent vero leas than 10 nlcronc, 1 1 indicating a serious duet concentration, p a rticu la rly In view o f the quantity of cobcotos Laovn to bo iu tt:c fix tu re . X Luaiu-i'a/liy le i , ;i_ r 1; i* 6 "i i.-' ; . V\;. . . ' r'.' . t e'.','- 1 Clh l.U'.'r v- lap- a ll;. l/eh xtoex* la y r d ll k-lU Ilo tr - Fry 1 1 Bra Fleer - Fry a U l ud Floor - Fry d l l Filf.h-i.a iled Fleer - Fry r i l l le t Floor - la y Uilll near* Myh- gi'cuio furnace lo t Floor - Fry m ill near main hilno Ii:ad.::iua Alloruble Gonecut rat i on ;i.a v.,,:.hu- 1-1,0 0) . >t *Kr v t.t T-..8 ;lu, u 2$ . 0 59.0 fo.o in :~?v:c.C 12, B 2?,2 12 , 9 13.1 20.0 10 .7 23.9 ' 5.0 * M illions of particle:?, per cubic foot o f a ir , The asbestos concentrations arc calculated on tho b cela Of kOp anbe-utoa In the nir-borm aunt.. < <:<; ; 1! Cpnclualortu and liecornccnlat iono . Ao note! in a l l previous reports, considerable e ffo rt should lv a d e , lcESE-dlately, to iqprovo tho duct control procedures in tho plant to reduce dustiness to an acceptable .level, Any void; dono in tho past hue apparently been in effective to tho extent that tK>x*e effo rt chould bo pf.ve;: t o th is feature thou has been in the post. I t la hoped tliat in the next 60 days S*raa tho date* o f thlo report that suitable ventilation v i l l have been applied c r bunt caacrvl arenuvon w ill have been applied cucfc that the lip^crdouo c o a litio n ealb-tlry; at tixio plant it; eliminated. A rev a, visblo X .indicai:-..;!. ,U a ,bi:,.v.sii ci.- ;du:it in th re v y '..iilj. a:.:' being eatrerely h t V.i end cub;' ;jv;U...,.'!." j (.-,,vr Uni i:: u:X v U c e ld s;c-avoj',Uv.t.iwi fo r cH lier aa c u te a te ; d u et, mica d u et, o r.ev en , in Koat canoe,, e. unirunce d u ct. A ll of the vrap iv a \r.: ' r.;l;:;t:r it b illy c;ov those noted in t i e proviene -.r.viV'.cn of 195 arid 19J J . la thu i>uct, roparto Indicated ' that tho vom iculite/duet aleno could poocibly be clashed uo a nuisance duot; however, aa the bacio of other infoaxatian received fraa tlx.: Publie Health Servico and otlvor.o, i t apiscf that the c3.o.oclice.* tlo n should be in. the order of m icu-liba Minorali; and iliut t!v> maximum a1.lcroc.blo ccacentrahien fo r v e ra lc u iito duct l a 2 w ith no aabontoo ecatrrjjftatioa should bo in rite o:J.;r c f CO n'lAi.c:i p a rtic le :; cubic, ft;.it of a i r rtithov th.au JO r,l.i?ricn p a r tic le s per cubic f e a t fee t\ uui.oajo-o d u ct, /u-.'-rdinc to o-j au th o r, vcav.icu3.lto in eltd o c. u nut-ber cf : Uou-loho laiir.-raln, o i l i^d ru b .d s i l ic a t e s of acre or Icon :'.;...:,:fJ.'.iL,: eh. a i r a i r. tu ro . iS/e-n- tbouph ve:;oho ul 11:0 i..i<btti!vlcn aro generolly coo.;id*.red iu. vfc r a l r e la tiv e ly f u r a nous, th e re arc rvUilrltloo in vbyolcaV to:d chuiLocl :;vor;..r.... va of v o rci.o u lltc, fu ie , lr.v.lUu and acbooto:; v.V.ch UCA-Ot c trc n c ly er.cf the r ;1o r l a i should be elarco d l a the own category an ta lc -a ril th a t tire shoote:; ccatenb ahcuild be c lo u d y eh curved und pieced c.fe; 5 cU.lu.lon 'p a rtic le ;; per cubic foot a o th e iiaiiuua allowable coucciitration for this portion of 'airiberno duct. I t lias been dotovnlncd that the aiv-bomo duct cntain hj> tra s a lite acbcstco. rmm 11 Be.-kv. - fie l ito`)_l.ivtovl.i;.\ (`i\n^or_Oj.l .' : v _ f .;. ........ .... ......... : . t e: \ 'r1 r.vr! : - ------- 1 Over nl ;veiny table f vot uJ.ll, j/ G / 6 `?, 3:r:9 lie t; l\ CcV'-ccntratiOA 100.0 0 Over uha^iig t ; H e , vot u l U , 3/i'/o f 11:30 cm f . .110.0 HAHEiui: Alba; AJLT CCHlflTHAT:: Here E steblislnd tt per Cubic meter of c iv Table I I indicatea the presence In the a ir of the vet m ill concentrations Of air-borne material which manifesto it c o lf cw a ``tcary"-compound when extracted la bcojuaio. Since tluro la no ootblicbod tla\?ohold lim it 'or thin type of m aterial, no recavaondotlcnu ero.nado based an the raegnitude of the .onontraticno found, except that in a l l p reb eb ility, the conceatratioaa should bo ikept e.o low no la technically acd eccaaalcally fcao ib lc. By \ray of corporis on, tho valueo noted exceed tbs concentrations found in the 'air' in Libby during tho moot oovero nohay c* foyyy days. ;. i Altec bod to the report aro xjIcco of tho filt o r o uood to dctciiiino the beatone colxlo partioii of the air-borne p articu late. A piece of clean f i l t e r ia also attached for caparioon. ft r , At th tin:.- 'o f this study, there vao'no attempt mdd to dotorn! no each Of the* location: vhioU euro craUrheulHig to dustiness tiv the tin sun dcr.o in-tho jkwst study c4' 1559 since, on the obiioryoMoa, i t was clear that a l l cl' the legations euiiaorated during the 1950 otudy iro t i l l in existence; and, perhaps, 1 even others xjofc added to th is croup, Therefore,, i t In nsnusid that a l l at* the duot producers noted au Pages 3, k p f>, (> and T of the lyjtt study were' s t i l l in evidencetoad should ho corrected.ixtpodlaboly;;lVi order to-reduce dustiness to an acceptable level. ' ' Toxi c i t y Toxicity oil the elements found in the duot from processing of voixalculito has been dh.ousted in tire punt; however, nineo vcrn lculito io eoeonUeilly u. kydrer.. magnesium mica c.id iu usually an alteration product of phlogcplto or slo t lie mi-. <. it-h as Icon doteirsliucd that the niuximp ulloydlXu concentration of 20 rU U ie u ' particle. per civile feet should apply to puvo vcrMleuilte vatksr than el.auring it os e n u t x a r . d u s t . A typo of p;u uuoconiouic hue hue feund t o occur c c : workers \;hc.:e only expocur,) ran to urica daub. Drocncu caul' other '.'in oxaiihiatica of 57 men c : - : d to duot generated, by grinding ulea x;iiich van p ra c tic a lly free of fre o -o ilic a found 10 case:; of pnovnonconooio. X-ray examination'of h % men vith more then h alf of th eir Industrial exposure In the mica fie ld hud on additional group 79 workers 00 employed reveal d efin ite pathology of 9 ^ and 11. w , resp ectively, dcublo that in a casparcklo group v ith no .mica exposure." In the fin a l cxalycioj hovovor, the asbestos content of the duot i s tlio ccntrcdling factor cubing the maximum allowable concentration 5 m illion particle per cubic foot for thin ccspcnent c f the duct. <?onelunlc.as and Rcccm *end:?,t Soar ; Ac indicated' in the findlnga of th is study, i t Gpparod that no progrocu bad boon code in reducing duct concentrations in 'tire dry m ill-tohm acceptable I and that, indeed, the duct coueeiurations had been increased,' substantially, over those in the pact, In v ice of tlie findings o f this study /.ind thoce included in the pact too studies of 1956 and 19>b, i t i s i*ocanmendod: j; 1 . That iFxediutc.attention bo given to redoing. duct ecnecntratleas :> . the dry ill to the acceptable le v e l0 oi' 1 2 m illion 'p a rticle s;p e r cubic foot of a ir . I t is lik e ly that i f the dust concentrations, in general, are5reduced to .12 million p a rtic le s per cubic foot of a ir (mppof) that- the fractio n of the duot concentration which is echost00 w ill also bo reduced to about tka 5 m illion p article concentration rccanrnesidad for asbestos. , < 2. That consideration, bo given to the p o s sib ility of substantial con centraticno of petroleum ruioto or droplets being ojocted, into tlie ataonphero i f tlio f l as.tat ion proceed io oucceoDful and a largo mmi)cr c f floatation mchinea aro put into use. As the bubbles brock, email' quantities o f ; flo a ta tlca agento tu'o distributed into the a ir , although the* udnceutratioao o f th is' lauterial may iiot l : oignifleant. 3. That, since thex'O vuo a substantial odoa* of vaporized diesel olio end other potredoum products in the vet m ill, consideration bo given to reducing evaporation o f petroleum products to a aioioura by covering those porto that.do not need.:to bo open to tho atmoophoro,. by reducing spillage* avid otlicr methods cf evaparatiba reduction. ? f. i: - Droccen, W., at ol... lV.cueaoconosio Among Mica and Pcrvmatito V/orkcrs, Public V: llealth Bulletin Ho. 250, U15PU3; 3^ 50. ' , - ' 3 " # ( J : J ;77.1.0.i) i : . x h . . r . . A / l U . r . r b l o 0 . . . 7 : : 7 t v , - . ' : U e. Ynlv.oa a ia g iw a In vJ :j i ello'i.:" u-bulaliooo bcr tito t - t l c a g1 1 wvu.'1 > utaoaplierie couccufcratioaa aT eontcMiraito to vbie'h varitera E.2Y be ciapoced fo r en cicWhour rorlitxj &iy x .t l o u l in cry to kcoXth, V.V.... .: x . J v .,K. C t 1.vV*.'-VU v Yl k.-./.b- K'.'jv i...', ^ ..7 ,vt:*cn b . 7 ' c .. '<1*r V 1 .1 c : . . v . t . : : ` s* C tr l o tr ttc c y r:t.. ver U ,IM :. / ' .. 7 c . ... 1 . . c v n >. :. :; t'i .*a i ; : - i b r o t w t r . : ; ; le ; ', v.:..; .............. ... V. . . . a t y ) : y '. ..,b ^'.. s.. v .i. - . . . y L L l h - l t U f , J L r : . r c ; . n C . .:.t, ......... : c c ': *0 v7 '' T / . .. . .^ : 1 ! .... V. '. . . . . . ., : ... ,' c i u c r ; . . ; , i . . : j i r A c *.-..p i., ' . (... ,.i ... vi... r . ] ........... , ..i V --V. -'.yti L;. .. I ? , V ....-......:........ i , ;.Vfc 7t . t b ' 7 . . . -t '? , r . 7 .; . U A i l ' 7 7 1 ,`.l. Vw. .y ^ .f k,, i.',b. . : , ; --f ,V , c .'.; i . t 7 :.;. t.:. %. i un t:t b v t V . '.CU .... ,.: i c.. . .........v c c v c o n v i u b i c a n * l i .. v e - voo:::t <r . t . t v v v . . : , . i r v 7 i v itV t?.n \ 2vi el i It Cn V o lt vccbcrn ryy bo v e- K -'tcly c.yccclf. C . . j - v S U - v (ley* vlthoufc obnlr r-alth bein; cvcrooly - atce i;c* bho itcuteo Hctcd vefe.? to evora^o eoftcontraticai} o* a i ccat* b.:;:.r vebdr.' r;bJlC v . : . f u n o. rorirru S.t> uot to t::; exceded cv-..u a .::io-i'cov.lyfc tho irrit to vMob tuero ib!curca rey bu creocdcd o:.* eurct o i ur.lsr; b r .....'... (7 y v:/Jt3 if o nini cr c bebeco cacti c i che c r l r r ct leu; ,, br-tlcr re:y Kjyi combu.. .7:7.7 oven ::.:..* ___ r j . u - r . - : : . . y o.*.:..7 I 1..7 v'ictkvr t::? 7777.7y v. v'. .' !7 j; r *.v...: ce.; : cv7:drb:'.\77 ti.o -...t yrCk bu c.t v ' v.7 . *11 lo t 7 ' . :...:.;...... . c c d e /b u e l 7 :U o cu tu e l ..i." ...- t:.; ; .1 i. .7; .`..V. 7;. . 7 . : .0.' 1 . 7 . . J Vi . ' ' I, 77. r;.` c;.....ur-ifcy is iv rollutilcn 0.0 ar r.ollt;.. Vvi' r . Xxi tlui cvalucitcii t r r. varlrer' o cryouuro to any harrful material,, coc.:i3croco c t t i . : .eruct c ti'.YO epemt t>y a vey'.xi* .n a coictartantel r:.t- lioapliove cluy.'.l& be* tabeo. Fcv tille reaoon, an attcupt xso vado to deter mine tho cuouxb r t t ir o o xrvrbvr rpctrfc en c l l !>lo Jobo vherc thsy v o t o not coatnat-.'.o cl';.:..;rab ;' n i . u y croco tirio va3 Sx"Oo:;al>lc. Uei^hfccd uvcrcro c-i-iioocrea moro r -c r ly i`cr-ccont a vc-i-bcr'o actual e^soourts over a n ig a te hour Ciy tlrui ciCs.-o 11 i l n z 't o c e n lo rocult r-eTnv;cct.r^ an cx^ocuro fo r cao c r tvo lruro per cay., \;t,.rv.vcr iioatioa io nade o f w icu ted avera^o eiyoocrca in t ' ..; c c 1' r ..vrent. oalculaticv:.*) vero mito r.cccvviny to Vi.o fclloviU ": t.. ..'/t : UiIbrli.J L .U c:n.v:i.) ...Vi <-:i.. ^oo'"i:<a Vy rf-C*.l^X liotvvo ox"'oouvtl