30 C.F.R. § 57.9360 Shelter holes.
Title 30 - Mineral Resources
(a) Shelter holes shall be— (1) Provided at intervals adequate to assure the safety of persons along underground haulageways where continuous clearance of at least 30 inches cannot be maintained from the farthest projection of moving equipment on at least one side of the haulageway; and (2) At least four feet wide, marked conspicuously, and provide a minimum 40-inch clearance from the farthest projection of moving equipment. (b) Shelter holes shall not be used for storage unless a 40-inch clearance is maintained.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart H—Loading, Hauling, and Dumping
Safety Devices, Provisions, and Procedures for Roadways, Railroads, and Loading and Dumping Sites
§ 57.9360 Shelter holes.
