{"data":{"id":"us-va/4vac25-60-20","jurisdiction":"us-va","citation":"4VAC25-60-20","heading":"General requirements","body":"Unless an exemption has been obtained in accordance with 4VAC25-60-40, roof bolting machines and continuous mining machines with integral roof drills used in a working face in a coal mine shall have an approved ATRS system.  Alternative methods of temporarily supporting the roof may be approved by the Chief.","path":["Title 4. Conservation And Natural Resources","Agency 25. Department of Energy","Chapter 60. Rules and Regulations Governing the Installation and Use of Automated Temporary Roof Support Systems"],"source_url":"https://law.lis.virginia.gov/admincode/title4/agency25/chapter60/section20/","current_through":"2026 Regular Session (effective July 1, 2026)","vintage":"","retrieved_at":"2026-09-14T04:46:11Z","sha256":"5716e90ce59e02b78b549e6c74f98be49fd3c7b23b087b1e174453a9d7ff72f5","source_id":"us-va-vac","stale":false,"prev":"us-va/4vac25-60-10","next":"us-va/4vac25-60-30"},"notice":"GroundRules: Original legal text. Not legal advice."}