{"data":{"id":"us/30-cfr-57.22104","jurisdiction":"us","citation":"30 CFR 57.22104","heading":"Open flames (I-C mines).","body":"(a) Open flames, including cutting and welding, shall not be used underground.\n(b) Welding and cutting shall not be done within 50 feet of a mine opening unless all persons are out of the mine and the mine opening is covered. The cover shall be a substantial material, such as metal or wood, topped with a layer of wetted material to prevent sparks and flames from entering the mine opening.","path":["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 T—Safety Standards for Methane in Metal and Nonmetal Mines"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-30.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:24Z","sha256":"952e32fb7edb7f3e12473249f5bd7964857a4b78061e4ecde4a04797739ad23c","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-57.22103","next":"us/30-cfr-57.22105"},"notice":"GroundRules: Original legal text. Not legal advice."}