§ 72.501 Emission limits for nonpermissible heavy-duty diesel-powered equipment, generators and compressors.

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Title 30—Mineral Resources > CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR > SUBCHAPTER O—COAL MINE SAFETY AND HEALTH > PART 72—HEALTH STANDARDS FOR COAL MINES > Subpart D—Diesel Particulate Matter—Underground Areas of Underground Coal Mines

This text was captured on Sep 22, 2026. It is a snapshot, not a live feed, so check the official code before relying on it.

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(a)-(b) [Reserved]

(c) Each piece of nonpermissible heavy-duty diesel-powered equipment (as defined by § 75.1908(a)), generator or compressor operated in an underground area of an underground coal mine must emit no more than 2.5 grams per hour of diesel particulate matter.

(d) Notwithstanding the other provisions of this section, a generator or compressor that discharges its exhaust directly into intake air that is coursed directly to a return air course, or discharges its exhaust directly into a return air course, is not subject to the applicable requirements of this section.

[66 FR 5704, Jan. 19, 2001, as amended at 66 FR 15033, Mar. 15, 2001; 66 FR 27866, May 21, 2001; 91 FR 38283, June 25, 2026]

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