{"data":{"id":"us-va/4vac25-40-5450","jurisdiction":"us-va","citation":"4VAC25-40-5450","heading":"Construction specifications for stoppings","body":"Stoppings in crosscuts between intake and return airways, other than room entries, shall be built of solid, substantial material; exposed surfaces shall be made of fire-resistant material, or if the material mined is combustible, stoppings shall be made of incombustible material.","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/section5450/","current_through":"2026 Regular Session (effective July 1, 2026)","vintage":"","retrieved_at":"2026-09-14T04:46:10Z","sha256":"9b7f8932dfc8e94776abe15c70c54ea4584adb59a423e6c578a59ad6d1605754","source_id":"us-va-vac","stale":false,"prev":"us-va/4vac25-40-5440","next":"us-va/4vac25-40-5460"},"notice":"GroundRules: Original legal text. Not legal advice."}