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CFR > Title 30 - Mineral Resources > CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR > SUBCHAPTER O—COAL MINE SAFETY AND HEALTH (parts 70 to 90) > PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES > SUBPART K—Ground Control (§77.1000 to §77.1013) > 77.1011—Drill holes; guarding.
77.1011—Drill holes; guarding.
Drill holes large enough to constitute a hazard shall be covered or guarded.