Section 7980.
7980. All electrical equipment and machines, including diesel engines, used in tunnels or underground mines classified extrahazardous shall be permissible equipment. The division may, however, permit the use of nonpermissive equipment in a tunnel or underground mine in areas where it finds there is no longer danger from gas or other hazards. (Added by Stats. […]
Section 7981.
7981. An escape chamber or alternate escape route shall be maintained within 5,000 feet of the tunnel face or areas being used to excavate material in an underground mine classified as gassy or extrahazardous. Workers shall be provided with emergency rescue equipment and trained in its use. (Added by Stats. 1972, Ch. 1430.)
Section 7982.
7982. Records of air flow and air sample tests to assure compliance with required standards shall be maintained by the employer at the site of any tunnel or underground mine classified extrahazardous. Such records shall be made available to any division representative upon request. (Added by Stats. 1972, Ch. 1430.)
Section 7983.
7983. The main fan line used for ventilation in any tunnel or underground mine classified extrahazardous shall contain a cutoff switch capable of halting all machinery underground automatically should the fan fail or its performance fall below minimum power needed to maintain a safe atmosphere. (Added by Stats. 1972, Ch. 1430.)
Section 7984.
7984. In any tunnel or underground mine classified extrahazardous a device or devices which automatically and continuously test the atmosphere for gases or vapors shall be maintained. Such device or devices shall be placed as near the face or area of operation as practical, but never more than 50 feet from such point. The division […]
Section 7954.
7954. To assist the unit of safety engineers in determining the safety of tunnel construction and mine operation, the division shall make available at least one industrial hygiene engineer and one chemist. A laboratory for analysis of dust, gas, vapors, soil, or other materials shall be available to members of this unit. Contracts to provide […]
Section 7969.
7969. In any gassy tunnel or underground mine the division shall review plans for electrical lighting and power for equipment. When it is necessary for safety, the inspector may require changes in the amount and type of lighting, and may require permissive-type wiring, switches, tools, and equipment. (Added by Stats. 1972, Ch. 1430.)
Section 7955.
7955. The division and the owner of a mine, if he is not the operator of the mine, shall be notified before any initial mining operation or construction may be started at any mines or tunnels. A prejob safety conference shall be held with an authorized representative of the division for all underground operations. Representatives […]
Section 7956.
7956. All personnel, including both employees working above ground and those in the tunnel or underground mine, shall be informed of the classification designated by the division for that job. A notice of the classification and any special orders, rules, or regulations to be used in construction, remodeling, demolition, or operation of the tunnel or […]
Section 7957.
7957. An emergency rescue plan shall be developed by the employer for every tunnel or underground mine. Such plan, including a current map of the tunnel or underground mine, shall be provided to local fire and rescue units, to the division, and to every employee at the place of employment. (Added by Stats. 1972, Ch. […]