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LII
Electronic Code of Federal Regulations (e-CFR)
Title 30—Mineral Resources
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 D—Air Quality, Radiation, Physical Agents, and Diesel Particulate Matter
Air Quality—Underground Only
§ 57.5015 Oxygen deficiency.
30 CFR § 57.5015 - Oxygen deficiency.
CFR
§ 57.5015 Oxygen deficiency.
Air in all
active workings
shall contain at least 19.5 volume percent oxygen.
