Section 7960.
7960. In any tunnel or underground mine classified as potentially gassy, tests for gas or vapors shall be made prior to start of work at each shift. If any concentration of gas at or above 10 percent of the lower explosive limit is recorded, the division shall be notified immediately. (Added by Stats. 1972, Ch. […]
Section 7961.
7961. The division shall investigate immediately any notification of a gas reading 10 percent of the lower explosive limit or higher by an employer in a tunnel or underground mine classified as potentially gassy. If the inspection determines the likelihood of encountering more gas or vapor, the division may halt operations until the tunnel or […]
Section 7962.
7962. A safety representative qualified to recognize hazardous conditions and certified by the division shall be designated by the employer in any tunnel or underground mine. He shall have the authority to correct unsafe conditions and unsafe practices, and shall be responsible for directing the required safety programs. (Added by Stats. 1972, Ch. 1430.)
Section 7963.
7963. 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 […]
Section 7964.
7964. Whenever an access shaft is used as the normal means of entrance or exit to an underground mine or tunnel, it shall be constructed of fireproof material or fireproofed by chemical or other means. (Added by Stats. 1972, Ch. 1430.)
Section 7964.5.
7964.5. Nothing contained in this part shall restrict the division in contracting with the Secretary of the Interior for an approved state plan for mines under P.L. 89-577 (30 U.S.C. 721 et seq.). (Added by Stats. 1972, Ch. 1430.)
Section 7965.
7965. Any tunnel or underground mine classified by the division as gassy shall operate under special procedures adopted by the board, as well as rules, regulations, special orders, or general orders for nongassy underground mines and tunnels. (Added by Stats. 1972, Ch. 1430.)
Section 7951.
7951. As used in this part: (a) Tunnel shall include excavation, construction, alteration, repairing, renovating, or demolishing of any tunnel except tunnel work covered under the compressed air safety orders adopted by the Occupational Safety and Health Standards Board and manhole construction. (b) “Tunnel” means an underground passageway, excavated by men and equipment working below the earth’s […]
Section 7966.
7966. In any tunnel classified as gassy by the division, there shall be tests for gas or vapors taken prior to each shift and at least hourly during actual operation. If a mechanical excavator is used, gas tests shall be made prior to removal of muck or material and before any cutting or drilling in […]
Section 7952.
7952. There shall be within the division a separate unit of safety engineers trained to inspect all tunnel construction and mine operations. (Added by Stats. 1972, Ch. 1430.)