30 C.F.R. § 57.14114 Air valves for pneumatic equipment.
Title 30 - Mineral Resources
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]
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart M—Machinery and Equipment
Safety Devices and Maintenance Requirements
§ 57.14114 Air valves for pneumatic equipment.
