30 C.F.R. § 56.9330 Clearance for surface equipment.
Title 30 - Mineral Resources
Continuous clearance of at least 30 inches from the farthest projection of moving railroad equipment shall be provided on at least one side of the tracks at all locations where possible or the area shall be marked conspicuously.
Title 30: Mineral Resources
PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES
Subpart H—Loading, Hauling, and Dumping
Safety Devices, Provisions, and Procedures for Roadways, Railroads, and Loading and Dumping Sites
§ 56.9330 Clearance for surface equipment.