30 C.F.R. § 57.22225 Auxiliary equipment stations (I-C mines).
Title 30 - Mineral Resources
Battery charging stations, compressor stations, and electrical substations shall not be installed underground or within 50 feet of a mine opening.
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
Ventilation
§ 57.22225 Auxiliary equipment stations (I-C mines).

