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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 C—Surface Installations (§77.200 to §77.217) > 77.204—Openings in surface installations; safeguards.
77.204—Openings in surface installations; safeguards.
Openings in surface installations through which men or material may fall shall be protected by railings, barriers, covers or other protective devices.