{"data":{"id":"us-ca/lab-7983","jurisdiction":"us-ca","citation":"LAB § 7983","heading":"","body":"The main fan line used for ventilation in any tunnel or underground mine classified extrahazardous shall contain a cutoff switch capable of halting all machinery underground automatically should the fan fail or its performance fall below minimum power needed to maintain a safe atmosphere.","path":["Labor Code - LAB","DIVISION 5. SAFETY IN EMPLOYMENT [6300. - 9254.]","PART 9. TUNNEL AND MINE SAFETY [7950. - 8004.]","CHAPTER 2. Gassy and Extrahazardous Tunnels [7965. - 7985.]"],"source_url":"https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zip","current_through":"2026-09-13","vintage":"","retrieved_at":"2026-09-14T05:56:33Z","sha256":"47fa0614073a11a7de14b31743eb093afcb272a143b3a89bef0df21e09cccfcf","source_id":"us-ca","stale":false,"prev":"us-ca/lab-7982","next":"us-ca/lab-7984"},"notice":"GroundRules: Original legal text. Not legal advice."}