GroundRules
LAB § 7963
Where this section sits in the code
- Labor Code - LAB
- DIVISION 5. SAFETY IN EMPLOYMENT [6300. - 9254.]
- PART 9. TUNNEL AND MINE SAFETY [7950. - 8004.]
- CHAPTER 1. Tunnels and Mines [7950. - 7964.5.]
All underground mines and tunnels with more than five men underground at one time shall have telephone or other communication systems to the surface in operation at any time there are persons underground. Such systems shall be installed in such a manner that destruction or removal of one phone or communication device does not make other phones or communication devices inoperative.
Collected 2026-09-14T05:56:33Z. Source file · JSON