30 C.F.R. § 57.7013 Covering or guarding drill holes.
Title 30 - Mineral Resources
Drill holes large enough to constitute a hazard shall be covered or guarded.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart F—Drilling and Rotary Jet Piercing
Drilling—Surface Only
§ 57.7013 Covering or guarding drill holes.
