30 C.F.R. § 75.385 Opening new mines.
Title 30 - Mineral Resources
When new mines are opened, no more than 20 miners at a time shall be allowed in any mine until a connection has been made between the mine openings, and these connections shall be made as soon as possible.
Title 30: Mineral Resources
PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
Subpart D—Ventilation
§ 75.385 Opening new mines.
