NCCER Tile Practice Questions - NCCER Tile Setter Tile Finisher Written Module Knowledge Assessments Exam

OSHA's permissible exposure limit (PEL) for respirable crystalline silica is which value, averaged over an 8-hour day?

50 micrograms per cubic meter (0.050 mg/m3) 500 micrograms per cubic meter 5 milligrams per cubic meter 5 micrograms per cubic meter

Correct Answer:

50 micrograms per cubic meter (0.050 mg/m3)

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