{"data":{"id":"us-va/4vac25-40-5200","jurisdiction":"us-va","citation":"4VAC25-40-5200","heading":"Operation of booster fans","body":"Booster fans shall be:\n\n1. Operated by permissible drive units maintained in permissible condition;\n\n2. Operated only in air containing less than 1.0% flammable gas; and\n\n3. Kept in continuous operation when persons are in active areas of the mine affected by such fans.","path":["Title 4. Conservation And Natural Resources","Agency 25. Department of Energy","Chapter 40. Safety and Health Regulations for Mineral Mining","Part XV. Safety and Health Regulations—Underground Only","Article 11. Gassy Mines"],"source_url":"https://law.lis.virginia.gov/admincode/title4/agency25/chapter40/section5200/","current_through":"2026 Regular Session (effective July 1, 2026)","vintage":"","retrieved_at":"2026-09-14T04:46:10Z","sha256":"2b325b8b5684faf50e5c4485d25331b598791b1580a0441a0ba42190b5ae61f2","source_id":"us-va-vac","stale":false,"prev":"us-va/4vac25-40-5190","next":"us-va/4vac25-40-5210"},"notice":"GroundRules: Original legal text. Not legal advice."}