C.F.R. » Title 30 » CHAPTER VII—OFFICE OF SURFACE MINING RECLAMATION AND ENFORCEMENT, DEPARTMENT OF THE INTERIOR › SUBCHAPTER K—PERMANENT PROGRAM PERFORMANCE STANDARDS › PART 819—SPECIAL PERMANENT PROGRAM PERFORMANCE STANDARDS-AUGER MINING

30 C.F.R. § 819.21

Auger mining: Protection of underground mining

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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.