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  2. Title 30 - Mineral Resources
  3. Chapter I - MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
  4. Subchapter K - METAL AND NONMETAL MINE SAFETY AND HEALTH
  5. Part 57 - SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
  6. Subpart M - Machinery and Equipment
  7. Topic - Safety Devices and Maintenance Requirements
  8. 30 CFR § 57.14114
30 CFR § 57.14114
Air valves for pneumatic equipment
July 29, 2020
CFR

A manual master quick-close type air valve shall be installed on all pneumatic-powered equipment if there is a hazard of uncontrolled movement when the air supply is activated. The valve shall be closed except when the equipment is being operated.

[53 FR 32528, Aug. 25, 1988; 53 FR 44588, Nov. 4, 1988]

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§ 57.14113 Inclined conveyors: backstops or brakes
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§ 57.14115 Stationary grinding machines

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