U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 28, 2025

All TitlesTitle 30Chapter IPart 57Subpart 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.

© 2016 GovRegs | About | Disclaimer | Privacy