{"data":{"id":"us/30-cfr-57.22210","jurisdiction":"us","citation":"30 CFR 57.22210","heading":"In-line filters (I-C mines).","body":"Filters or separators shall be installed on air-lift fan systems to prevent explosive concentrations of dust from passing through the fan.","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":"de580350bf856f482992dce7a0f17195f6c2bad7f07db900fa7d1cb6fb75493b","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-57.22209","next":"us/30-cfr-57.22211"},"notice":"GroundRules: Original legal text. Not legal advice."}