C.F.R. » Title 30 » CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR › SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH › PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES › Subpart T—Safety Standards for Methane in Metal and Nonmetal Mines

30 C.F.R. § 57.22210

In-line filters (I-C mines)

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Filters or separators shall be installed on air-lift fan systems to prevent explosive concentrations of dust from passing through the fan.