30 C.F.R. § 57.9104 Railroad crossings.
Title 30 - Mineral Resources
Designated railroad crossings shall be posted with warning signs or signals, or shall be guarded when trains are passing. These crossings shall also be planked or filled between the rails.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart H—Loading, Hauling, and Dumping
Traffic Safety
§ 57.9104 Railroad crossings.
