30 C.F.R. § 819.21 Auger mining: Protection of underground mining.
Title 30 - Mineral Resources
Auger holes shall not extend closer than 500 feet (measured horizontally) to any abandoned or active underground mine workings, except as approved in accordance with §816.79 of this chapter.
Title 30: Mineral Resources
PART 819—SPECIAL PERMANENT PROGRAM PERFORMANCE STANDARDS-AUGER MINING
§ 819.21 Auger mining: Protection of underground mining.
