C.F.R. » Title 30 » CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR › SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH › PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES › Subpart R—Personnel Hoisting

30 C.F.R. § 57.19101

Stopblocks and derail switches

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Positive stopblocks or a derail switch shall be installed on all tracks leading to a shaft collar or landing.