{"data":{"id":"us-va/4vac25-40-3190","jurisdiction":"us-va","citation":"4VAC25-40-3190","heading":"Air intakes and returns","body":"Separate mine openings shall be provided for main intake and return air currents except during early stages of development. A multiple compartment shaft is a single opening for the purpose of this standard.","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/section3190/","current_through":"2026 Regular Session (effective July 1, 2026)","vintage":"","retrieved_at":"2026-09-14T04:46:03Z","sha256":"88a4b2d7120b1fc02e8f3fff4a48560340af2f83be93c353cc19f32ddb9b493f","source_id":"us-va-vac","stale":false,"prev":"us-va/4vac25-40-3180","next":"us-va/4vac25-40-3200"},"notice":"GroundRules: Original legal text. Not legal advice."}