{"data":{"id":"us/30-cfr-57.22105","jurisdiction":"us","citation":"30 CFR 57.22105","heading":"Smoking and open flames (IV mines).","body":"Smoking or open flames shall not be permitted in a face or raise, or during release of gas from a borehole until tests have been conducted in accordance with § 57.22226 and the methane level has been determined to be below 0.5 percent.","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":"40823680fcecede8cee195ff0d8acefdf745a91b008c4743b36858de6eccbd0f","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-57.22104","next":"us/30-cfr-57.22106"},"notice":"GroundRules: Original legal text. Not legal advice."}