30 C.F.R. § 70.305 Respiratory equipment; gas, dusts, fumes, or mists.
Title 30 - Mineral Resources
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. [60 FR 30401, June 8, 1995]
Title 30: Mineral Resources
PART 70—MANDATORY HEALTH STANDARDS—UNDERGROUND COAL MINES
Subpart D—Respiratory Equipment
§ 70.305 Respiratory equipment; gas, dusts, fumes, or mists.

