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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) > 77.1003—Benches.
77.1003—Benches.
To insure safe operation, the width and height of benches shall be governed by the type of equipment to be used and the operation to be performed.