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CFR > Title 30 - Mineral Resources > CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR > SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH (parts 56 to 58) > PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES > SUBPART R—Personnel Hoisting (§57.19000 to §57.19135) > 57.19012—Grooved drums.
57.19012—Grooved drums.
Where grooved drums are used, the grooves shall be of suitable size and pitch for the ropes used.