(a)
Heavy-duty diesel-powered equipment includes—
(1)
Equipment that cuts or moves rock or coal;
(2)
Equipment that performs drilling or bolting functions;
(3)
Equipment that moves longwall components;
(4)
Self-propelled diesel fuel transportation units and self-propelled lube units; or
(5)
Machines used to transport portable diesel fuel transportation units or portable lube units.
(b)
Light-duty diesel-powered equipment is any diesel-powered equipment that does not meet the criteria of paragraph (a).
(c)
For the purposes of this subpart, the following equipment is considered attended:
(1)
Any machine or device operated by a miner; or
(2)
Any machine or device that is mounted in the direct line of sight of a job site located within 500 feet of such machine or device, which job site is occupied by a miner.
(d)
Diesel-powered ambulances and fire fighting equipment are a special category of equipment that may be used underground only in accordance with the mine fire fighting and evacuation plan under § 75.1502.
Code of Federal Regulations
[61 FR 55527, Oct. 25, 1996; 70 FR 36347, June 23, 2005]