30 C.F.R. § 75.1901 Diesel fuel requirements.
Title 30 - Mineral Resources
(a) Diesel-powered equipment shall be used underground only with a diesel fuel having a sulfur content no greater than 0.05 percent and a flash point of 100 °F (38 °C) or greater. Upon request, the mine operator shall provide to an authorized representative of the Secretary evidence that the diesel fuel purchased for use in diesel-powered equipment underground meets these requirements. (b) Flammable liquids shall not be added to diesel fuel used in diesel-powered equipment underground. (c) Only diesel fuel additives that have been registered by the Environmental Protection Agency may be used in diesel-powered equipment underground.
Title 30: Mineral Resources
PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
Subpart T—Diesel-Powered Equipment
§ 75.1901 Diesel fuel requirements.

