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Regulations last checked for updates: May 02, 2025
Title 30 - Mineral Resources last revised: Apr 14, 2025
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Title 30
Chapter I
Part 57
Subpart D - Subpart D—Air Quality, Radiation, Physical Agents, and Diesel Particulate Matter
View all text of Subpart D [§ 57.5001 - § 57.5075]
§ 57.5015 - Oxygen deficiency.
Air in all active workings shall contain at least 19.5 volume percent oxygen.
authority:
30 U.S.C. 811.
source:
50 FR 4082, Jan. 29, 1985, unless otherwise noted.
cite as:
30 CFR 57.5015
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