California Code
PART 9 - TUNNEL AND MINE SAFETY
CHAPTER 2 - Gassy and Extrahazardous Tunnels

Section 7965. - 7965. Any tunnel or underground mine classified by the division...

Section 7966. - 7966. In any tunnel classified as gassy by the division,...

Section 7967. - 7967. Whenever gas levels in excess of 10 percent of...

Section 7968. - 7968. In any gassy tunnel or underground mine, the division...

Section 7969. - 7969. In any gassy tunnel or underground mine the division...

Section 7970. - 7970. In any tunnel or underground mine classified gassy, smoking...

Section 7971. - 7971. Whenever there is any ignition of gas or vapor...

Section 7972. - 7972. If the level of gas in any tunnel or...

Section 7973. - 7973. In any tunnel or underground mine classified as gassy,...

Section 7974. - 7974. In any tunnel classified as gassy by the division,...

Section 7975. - 7975. A “kill” button capable of cutting off all electrical...

Section 7976. - 7976. In any tunnel or underground mine classified as gassy,...

Section 7977. - 7977. Any tunnel or underground mine classified as extrahazardous by...

Section 7978. - 7978. In any extrahazardous tunnel or underground mine smoking by...

Section 7979. - 7979. In tunnels or underground mines classified extrahazardous, sufficient air...

Section 7980. - 7980. All electrical equipment and machines, including diesel engines, used...

Section 7981. - 7981. An escape chamber or alternate escape route shall be...

Section 7982. - 7982. Records of air flow and air sample tests to...

Section 7983. - 7983. The main fan line used for ventilation in any...

Section 7984. - 7984. In any tunnel or underground mine classified extrahazardous a...

Section 7985. - 7985. All such testing device or devices shall be U.S....