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Breathing concrete dust is not harmful.
Silica is only present in concrete.
Supervisors can judge the amount of silica in the dust by looking at the consistency of the cloud.
Workers don’t need to worry about the plume of dust if they are wearing a respirator.
Pick one of all of the work-related activities that can cause exposure to dangerous silica
dust.
I can wear any respirator with any filter I think is comfortable.
The following illnesses can be caused by breathing masonry dust with silica in it:
If I smoke, I shouldn’t worry about breathing silica dust.
Wet cutting and ventilation help reduce exposure to silica dust.
What color filters/Cartridges should I use when working around Silica?
The PEL for silica dust is ________ for an 8 hour time weighted average: