CFR›Title 30›Chapter I›Part 57›Subpart C›Subject Group Ventilation Control Measures ContainsSections 57.4760–57.4761; Appendix ICorpusDaily eCFRDisplayed edition2026-05-12Last updated2026-05-12 Contents 57.4760 § 57.4760 Shaft mines. 57.4761 § 57.4761 Underground shops. Appendix I to Subpart C of Part 57 Appendix I to Subpart C of Part 57—National Consensus Standards Previous Prohibitions/Precautions/Housekeeping Prohibitions/Precautions/Housekeeping Next Welding/Cutting/Compressed Gases Welding/Cutting/Compressed Gases