# 30 CFR § 72.501: Emission limits for nonpermissible heavy-duty diesel-powered equipment, generators and compressors

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-30-72.501

## Section

- **Citation:** 30 CFR § 72.501
- **Heading:** Emission limits for nonpermissible heavy-duty diesel-powered equipment, generators and compressors
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** 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

## Text

(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]

## Nearby sections

- [30 CFR § 72.1 § 72.1 Scope.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.1.md)
- [30 CFR § 72.100 § 72.100 Periodic examinations.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.100.md)
- [30 CFR § 72.500 § 72.500 Emission limits for permissible diesel-powered equipment.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.500.md)
- [30 CFR § 72.501 § 72.501 Emission limits for nonpermissible heavy-duty diesel-powered equipment, generators and compressors.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.501.md)
- [30 CFR § 72.502 § 72.502 Requirements for nonpermissible light-duty diesel-powered equipment other than generators and compressors.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.502.md)
- [30 CFR § 72.503 § 72.503 Determination of emissions; filter maintenance; definition of “introduced”.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.503.md)
- [30 CFR § 72.510 § 72.510 Miner health training.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.510.md)
- [30 CFR § 72.520 § 72.520 Diesel equipment inventory.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.520.md)
- [30 CFR § 72.610 § 72.610 Abrasive blasting.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.610.md)
- [30 CFR § 72.620 § 72.620 Drill dust control at surface mines and surface areas of underground mines.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.620.md)
- [30 CFR § 72.630 § 72.630 Drill dust control at underground areas of underground mines.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.630.md)
- [30 CFR § 72.700 § 72.700 Respiratory equipment; respirable dust.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.700.md)
- [30 CFR § 72.701 § 72.701 Respiratory equipment; gas, dusts, fumes, or mists.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.701.md)
- [30 CFR § 72.710 § 72.710 Selection, fit, use, and maintenance of approved respirators.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.710.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-30-72.501. Check the current official text before relying on it. Not legal advice.