California Statutes
§ 7963. — 7963. (Added by Stats. 1972, Ch. 1430.)
California·Code LAB Labor Code - LAB·Div. 5. DIVISION 5. SAFETY IN EMPLOYMENT·Part 9. PART 9. TUNNEL AND MINE SAFETY·Ch. 1. CHAPTER 1. Tunnels and Mines
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.
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California § 7963. (7963. (Added by Stats. 1972, Ch. 1430.)) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.
Legislative History
Added by Stats. 1972, Ch. 1430.