{"data":{"id":"us-va/4vac25-40-3280","jurisdiction":"us-va","citation":"4VAC25-40-3280","heading":"Ventilation door closing","body":"When ventilation control doors are opened as a part of the normal mining cycle, they shall be closed as soon as possible to reestablish normal ventilation to active areas.","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 3. Air Quality, Radiation and Physical Agents"],"source_url":"https://law.lis.virginia.gov/admincode/title4/agency25/chapter40/section3280/","current_through":"2026 Regular Session (effective July 1, 2026)","vintage":"","retrieved_at":"2026-09-14T04:46:04Z","sha256":"b80ea2f035f74f10a52ddcf4376fe08f5038dbfb1e6a545c98c10a4d1c3315af","source_id":"us-va-vac","stale":false,"prev":"us-va/4vac25-40-3270","next":"us-va/4vac25-40-3290"},"notice":"GroundRules: Original legal text. Not legal advice."}