{"data":{"id":"us/30-cfr-57.22222","jurisdiction":"us","citation":"30 CFR 57.22222","heading":"Ventilation materials (I-A, I-B, I-C, II-A, III, V-A, and V-B mines).","body":"Brattice cloth and ventilation tubing shall be approved by MSHA in accordance with 30 CFR part 7, or shall bear a BC or VT acceptance number issued by the MSHA Approval and Certification Center.","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":"0f8eeb28a58bc31b5d206abe2fdfe27f1c23015f23449271f74f8c16734d8907","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-57.22221","next":"us/30-cfr-57.22223"},"notice":"GroundRules: Original legal text. Not legal advice."}