There is a newer version of the California Code
2011 California Code
Labor Code
DIVISION 5. SAFETY IN EMPLOYMENT [6300 - 9104]
CHAPTER 2. Gassy and Extrahazardous Tunnels
Section 7972
CA Labor Code § 7972 (through 2012 Leg Sess) What's This?
If the level of gas in any tunnel or underground mine reaches 20 percent of its lower explosive limit at any time all men shall be removed, the division notified immediately by telephone or telegram, and no one shall reenter the tunnel or underground mine until approval is given by the division.
(Added by Stats. 1972, Ch. 1430.)
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