30 C.F.R. § 56.14114 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.
Title 30: Mineral Resources
PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES
Subpart M—Machinery and Equipment
Safety Devices and Maintenance Requirements
§ 56.14114 Air valves for pneumatic equipment.
