ActivityAssumed exposureAcceptable respirator(s)Work with hand tools onlyUsing power tools with dust collection systems50-500 ug/m3 (low)All respirators except disposable onesUsing power tools w/o dust collection systemsWorking with lead mortarLead burningRivet bustingClean up dry expendable abrasivesMoving abrasive blasting enclosures500-2500 ug/m3 (medium)Full face respiratorPAPR with a capePAPR with full facepieceSupplied-air (airline) respirator with a continuous-flow regulator & a loose fitting facepiece with a capeSelf-Contained Breathing Apparatus (SCBAs)Welding/cutting/torch burningAbrasive blastingMore than 2500 ug/m3 (high)PAPR with a cape;PAPR with full facepieceSupplied-air (airline) respirator with a continuous-flow regulator & a loose fitting facepiece with a capeSelf-Contained Breathing Apparatus (SCBAs)