California Statutes
§ 7500. — 7500. (Enacted by Stats. 1937, Ch. 90.)
California·Code LAB Labor Code - LAB·Div. 5. DIVISION 5. SAFETY IN EMPLOYMENT·Part 4. PART 4. MINING INDUSTRIES·Ch. 3. CHAPTER 3. Underground Telephones
In all mines operated in the State where a depth of more than five hundred feet underground has been reached, a telephone system shall be established, equipped and maintained by the owners or lessees of the mine with stations at each working level below the depth aforesaid, communicating with a station on the surface of the mine.
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California § 7500. (7500. (Enacted by Stats. 1937, Ch. 90.)) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.
Legislative History
Enacted by Stats. 1937, Ch. 90.