CFR > Title 30 - Mineral Resources > CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR > SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH (parts 56 to 58) > PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES > SUBPART C—Fire Prevention and Control (§57.4000 to §57.4761) > 57.4104—Combustible waste.

57.4104—Combustible waste.

(a) Waste materials, including liquids, shall not accumulate in quantities that could create a fire hazard.
(b) Waste or rags containing flammable or combustible liquids that could create a fire hazard shall be placed in the following containers until disposed of properly:
(1) Underground—covered metal containers.
(2) On the surface—covered metal containers or equivalent containers with flame containment characteristics.