30 C.F.R. § 57.22315 Self-contained breathing apparatus (V-A mines).
Title 30 - Mineral Resources
Self-contained breathing apparatus of a duration to allow for escape from the mine and sufficient in number to equip all persons underground shall be strategically located throughout the mine. Such apparatus shall be approved by MSHA and NIOSH under 42 CFR part 84 and shall be maintained in accordance with manufacturers' specifications. This standard does not apply to double entry mining systems where crosscut intervals do not exceed 250 feet. [52 FR, 24941, July 1, 1987, as amended at 60 FR 30401, June 8, 1995]
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart T—Safety Standards for Methane in Metal and Nonmetal Mines
Equipment
§ 57.22315 Self-contained breathing apparatus (V-A mines).
