SDS

limits.
Othercontrolmeasures:Respirabledustandcrystallinesilicalevelsshouldbemonitoredregularly.Dustandcrystallinesilicalevelsin
excessofappropriateexposurelimitsshouldbereducedbyimplementingfeasibleengineeringcontrols,including(butnotlimitedto)
dustsuppression(wetting),ventilation,processenclosureandenclosedemployeeworkstations.
EYE/FACEPROTECTION:
Safetyglasseswithsideshieldsshouldbewornasminimumprotection.Dustgogglesshouldbewornwhenexcessively(visible)dusty
conditionsarepresentorareanticipated.Ifirritationpersists,getmedicalattentionimmediately.Thereispotentialforsevereeye
irritationifexposedtoexcessiveconcentrationsofdustforthoseusingcontactlenses.
SKINPROTECTION:
Useappropriateprotectiveglovesifmanuallyhandlingtheproduct.
RESPIRATORYPROTECTION:
RespiratorRecommendations:
Forrespirablecrystallinesilicalevelsthatexceedorarelikelytoexceedappropriateexposurelimits,aNIOSHapprovedparticulate
filterrespiratormustbeworn.RespiratorusemustcomplywithapplicableMSHAorOSHAstandards,whichincludeprovisionsfora
usertrainingprogram,respiratorrepairandcleaning,respiratorfittesting,andotherrequirements.
ForadditionalinformationcontactNIOSHat18003564674orvisitwebsite:http://www.cdc.gov/niosh/npg(searchforcrystalline
silica).SeealsoANSIstandardZ88.2(latestrevision)"AmericanNationalStandardforRespiratoryProtection,"29CFR1910.134and
1926.103,and42CFR84.
NIOSHrecommendationsforrespiratoryprotectionforcrystallinesilicainclude:
Upto0.5mg/m3:(APF=10)AnyparticulaterespiratorequippedwithanN95,R95,orP95filter(includingN95,R95,andP95filtering
facepieces)exceptquartermaskrespirators.Thefollowingfiltersmayalsobeused:N99,R99,P99,N100,R100,P100.Upto1.25
mg/m3:(APF=25)Anypowered,airpurifyingrespiratorwithahighefficiencyparticulate(100series)filter.(APF=25)Any
suppliedairrespiratoroperatedinacontinuousflowmode
Upto2.5mg/m3:(APF=50)Anyairpurifying,fullfacepiecerespiratorwithanN100,R100,orP100filter.
(APF=50)Anypowered,airpurifyingrespiratorwithatightfittingfacepieceandahighefficiencyparticulatefilter
Upto25mg/m3:(APF=1000)Anysuppliedairrespiratoroperatedinapressuredemandorotherpositivepressuremode
EmergencyorplannedentryintounknownconcentrationsorIDLHconditions(50mg/m3forcrystallinesilicaquartz):Aselfcontained
breathingapparatus(SCBA)thathasafullfacepieceandisoperatedinapressuredemandorotherpositivepressuremodeorany
suppliedairrespiratorthathasafullfacepieceandisoperatedinapressuredemandorotherpositivepressuremodeincombination
withanauxiliaryselfcontainedpositivepressurebreathingapparatus.
EscapefromunknownorIDLHconditions:Anairpurifying,fullfacepiecerespiratorwithahighefficiencyparticulate(100series)filter
oranyappropriateescapetype,selfcontainedbreathingapparatus.
Iftheworkplaceairbornecrystallinesilicaconcentrationisunknownforagiventask,conductairmonitoringtodeterminethe
appropriatelevelofrespiratoryprotectiontobeworn.Consultwithacertifiedindustrialhygienist,yourinsuranceriskmanagerorthe
OSHAConsultativeServicesgroupfordetailedinformation.Ensureappropriaterespiratorsareworn,asneeded,duringandfollowing
thetask,includingcleanuporwheneverairbornedustispresent,toensureworkerexposuresremainbelowOELs.
GENERALHYGIENECONSIDERATIONS:
Therearenoknownhazardsassociatedwiththismaterialwhenusedasrecommended.FollowingtheguidelinesinthisSDSare
recognizedasgoodindustrialhygienepractices.Avoidbreathingdust.Avoidskinandeyecontact.Washdustexposedskinwithsoap
andwaterbeforeeating,drinking,smokingandusingtoiletfacilities.Washworkclothesaftereachuse.
SECTIONIX—PHYSICALANDCHEMICALPROPERTIES
APPEARANCE
NaturalStoneisamixtureofangularparticles,
generallygreybutcanbemulticolored,rangingin
sizefromsandtoboulders.
ODORANDODORTHRESHOLD
Odorlessandnotapplicable
pHANDVISCOSITY
Notapplicable
MELTINGPOINT/FREEZINGPOINT
Notapplicable
SafetyDataSheet(SDS)NaturalStoneasofJune1,2015 page5of9