Distributed by: u.s. - Laguna Clay Co.

1 F-SERIES FOUNDRYSANDS FJ-SERIES H-SERIES'L-SERIES N-SERIES'NJSERIES,OK-SERIES'P-SERIES T-SERIES'HYDRAULICFRACINGSANDS,MIN-U-SIL FineGroundSilica'MYSTICWHITE #1 DRY'#1 SPECIAL'PENNSAND Q-ROK SIL-CO-SIL GroundSilica'Supersil MASONSAND GSSERIES'PER-SPECC hemicalNameorSynonym:SiliconDioxide(SiOz ).Sand,SilicaSand,Quartz,CrystallineSili ca,Flint,GroundSilica(flour). PreparationMainApplications(non-exhausti velist):abrasives,brick,ceramics,foundry castings,glass,grout,hydraulicfrac(propp ant)sand,mortar,paintandcoatings,silicat echemistry,siliconerubber, , :304-258-2500 EmergencyPhone:304-258-2500 whiteortansand, , singleexposurewillnotresultinseriousadve rsehealth (quartz) (quartz)isincompatiblewithhydrofluoricac id,fluorine, ( ).

2 :Respirablecrystallinesilica(quartz)canc ausesilicosis,a fibrosis (otherthansilicosis):Somestudiesshowanin creased>. :::J0'> ~EyeContact:Crystallinesilica(quartz) :Somestudiesshowexcessnumbersofcasesofsc leroderma,connectivetissuedisorders,lupu s,rheumatoidarthritis,chronickidneydisea sesandend-stage :Theadversehealtheffects-- silicosis,lungcancer,autoimmuneandchroni ckidneydiseases,tuberculosis, :Generally,therearenosignsorsymptomsofex posuretocrystallinesilica(quartz). :Theconditionofindividualswithlungdiseas e( ,bronchitis,emphysema,chronicobstructive pulmonarydisease)canbeaggravatedbyexposu re.

3 > >-coUcoC:::J0'> ,ToxicologicalInformation,foradditionald etailonpotentialadversehealth #%CrystallineSilica(quartz) < < < irritationpersists, :Nospecificfirst-aidisnecessarysincethea dversehealtheffectsassociatedwithexposur etocrystallinesilica(quartz) thereisa exposure, ,residue, ,weara respiratorapprovedforsilicadustwhenusing ,handling, , ,floors,sills,ledges,machinery, ,clean,andfit , , , , , ,andstateandlocalworkerorcommunity"right -to-know" "IndustrialVentilation,A ManualofRecommendedPractice"(latestediti on).

4 :Ifitisnotpossibletoreduceairborneexposu relevelstobelowtheOSHAPEL withventilation,usethetable ,2004, of11 III,Table1,"ParticulateRespirators". ; (APF) ,anAPFof10meansthattherespiratorshouldre ducetheairborneconcentrationofa particulatebya factorof10,sothatif theworkplaceconcentrationofa particulatewas150ug/m3,thena respiratorwithanAPFof10shouldreducetheco ncentrationofparticulateto15 (UseonlyNIOSH-certifiedrespirators) (demand)supplied-airrespiratorequippedwi tha hoodorhelmetanda highefficiency25(HEPA) ,R-100,orP-100filter(s).

5 50 Anypoweredair-purifyingrespiratorequippe dwitha tight-fittingfacepiece(halforfullfacepie ce)anda (demand)supplied-airrespiratorequippedwi tha tight-fittingfacepiece(halforfullfacepie ce).AnyneQativepressure(demand)self-cont ainedrespiratorequippedwitha ,000 Anypressure-demandsupplied-airrespirator equippedwitha givenrespiratoriscontingentupon(1)theres piratoruseradheringtocompleteprogramrequ irements( ),(2)theuseofNIOSH-certifiedrespiratorsi ntheirapprovedconfiguration,and(3)indivi dualfittestingtoruleoutthoserespirators thatcannotachievea therespiratoris qualitativelyorquantitativelyfit (bywt.)

6 TWASTELTWASTELTWASTELUnitCrystallineSili ca(quartz) m3%Si02+2If crystallinesilica(quartz)isheatedtomoret han870 C,itcanchangetoa formofcrystallinesilicaknownastridimite; if crystallinesilica(quartz)isheatedtomoret han1470 Citcanchangetoa (quartz).EngineeringControls:Ventilation mustbeadequatetomaintaintheambientworkpl aceatmospherebelowtheexposurelimit(s) ,andinanycaseif suchexposureisaboveregulatorylimits(seea bove),weara of11 EyeIFaceProtection:If eyecontactwhileusingproductmaybeanticipa ted,wearappropriatesafetyglasseswithside shieldsorchemical (suchaslatexorneoprene) ,a :Odor:Whiteortansand:granular,crushedorg roundtoa ,SafetyandEnvironmentalInformationpH:Spe cificGravity:MeltingPoint:FreezingPointB oilingPoint:Flashpoint:Flammability:Expl osiveproperties.

7 Oxidizingproperties:VaporPressure:Relati veDensity:Solubility:WaterSolubility:Per centVolatilesbyVolume:Viscosity:Vaporden sity:MolecularWeight: F/171O CNotApplicable4046 F/2230 CNotApplicableNotApplicableNotApplicable contactwithpowerfuloxidizingagentssuchas fluorine,chlorinetrifluoride, corrosivegas, of11 Contactwithpowerfuloxidizingagentssuchas fluorine,chlorinetrifluoride, :Contactwithpowerfuloxidizingagents,such asfluorine,chlorinetrifluorideandoxygend ifluoride, :Silicawilldissolveinhydrofluoricacidand producethecorrosivegassilicontetrafluori de(SiF4).

8 :Will , ,chronic(orordinary),accelerated, (oftenreferredtoasSimpleSilicosis)isthem ostcommonformofsilicosis,andcanoccurafte rmanyyearsofexposuretorelativelylowlevel sofairborne (shownasradiographicopacities)lessthan1 centimeterindiameter, ,simplesilicosisisnotassociatedwithsympt oms, (PMF).ComplicatedsilicosisorPMFischaract erizedbylunglesions(shownasradiographico pacities)greaterthan1 ,thesymptoms,if present,areshortnessofbreath,wheezing, (corpumonale).AcceleratedSilicosiscanocc urwithexposuretohighconcentrationsofresp irablecrystallinesilicaovera relativelyshortperiod;thelunglesionscana ppearwithinfive(5) , ,sometimesasshortasa ,fever, TheInternationalAgencyforResearchonCance r("IARC")concludedthattherewas"sufficien tevidenceinhumansforthecarcinogenicityof crystallinesilicaintheformsofquartzorcri stobalitefromoccupationalsources",andtha tthereis"sufficientevidenceinexperimenta lanimalsforthecarcinogenicityofquartzand cristobalite.

9 "TheoveralilARCevaluationwasthat"crystal linesilicainhaledintheformofquartzorcris tobalitefromoccupationalsourcesiscarcino genictohumans(Group1)."TheIARC evaluationnotedthat" "ForfurtherinformationontheIARC of11evaluation,seeIARCM onographsontheEvaluationofCarcinogenicRi skstoHumans,Volume68,"Silica, " (1997).TheEUScientificCommitteeforOccupa tionalExposureLimits(SCOEl)concludedinJu ne2002( ):" (andapparently,notinemployeeswithoutsili cosisexposedtosilicadustinquarriesandint heceramicindustry).Thereforepreventingth eonsetofsilicosiswillalsoreducethecancer risk.

10 " ,-- scleroderma,systemiclupuserythematosus,r heumatoidarthritis-- reviewofthesubject,thefollowingmaybecons ulted:"OccupationalExposuretoCrystalline SilicaandAutoimmuneDisease",Environmenta lHealthPerspectives,Volume107,Supplement 5, (1999);"OccupationalScleroderma",Current OpinioninRheumatology,Volume11, (1999). ,if :OccupationallungDisorders,ThirdEdition, Chapter12,entitled"SilicosisandRelatedDi seases",Parkes, (1994);"Riskofpulmonarytuberculosisrelat ivetosilicosisandexposuretosilicadustinS outhAfricangoldminers,"OccupEnvironMed.