MSHA - Code of Federal Regulations - 30 CFR 70.305
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MSHA - Title 30 CFR
30 CFR § 70.305
Respiratory equipment; gas, dusts, fumes, or mists.


Respiratory equipment approved by NIOSH under 42 CFR part 84 shall be provided to persons exposed for short periods to inhalation hazards from gas, dusts, fumes, or mist. When the exposure is for prolonged periods, other measures to protect such persons or to reduce the hazard shall be taken.


For further information: See MSHA's Program Policy Manual
[ 60 FR 30341, June 8, 1995]