30 C.F.R. § 77.401 Stationary grinding machines; protective devices.
Title 30 - Mineral Resources
(a) Stationary grinding machines other than special bit grinders shall be equipped with: (1) Peripheral hoods (less than 90° throat openings) capable of withstanding the force of a bursting wheel. (2) Adjustable tool rests set as close as practical to the wheel. (3) Safety washers. (b) Grinding wheels shall be operated within the specifications of the manufacturer of the wheel. (c) Face shields or goggles, in good condition, shall be worn when operating a grinding wheel.
Title 30: Mineral Resources
PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES
Subpart E—Safeguards for Mechanical Equipment
§ 77.401 Stationary grinding machines; protective devices.

