California Labor Code CHAPTER 2 - Gassy and Extrahazardous Tunnels

• Section 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,...
• Section 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...
• Section 7967.
  Whenever gas levels in excess of 10 percent of the lower explosive limit are encountered initially in a tunnel or underground mine classified as gassy,...
• Section 7968.
  In any gassy tunnel or underground mine, the division may order work halted until adequate testing can be completed to determine the level of hazard...
• Section 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,...
• Section 7970.
  In any tunnel or underground mine classified gassy, smoking shall be prohibited and the employer shall be responsible for collecting all personal sources of ignition...
• Section 7971.
  Whenever there is any ignition of gas or vapor in a tunnel or underground mine, all work shall cease, employees shall be removed, and reentry...
• Section 7972.
  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...
• Section 7973.
  In any tunnel or underground mine classified as gassy, all employees shall be informed of any special orders made by the division following an inspection....
• Section 7974.
  In any tunnel classified as gassy by the division, ventilation shall include continuous exhausting of fumes and air, unless an alternative ventilation plan which is...
• Section 7975.
  A “kill” button capable of cutting off all electrical equipment shall be maintained in any gassy tunnel or underground mine. The safety representative or his...
• Section 7976.
  In any tunnel or underground mine classified as gassy, the division shall determine the number of fire extinguishers necessary and their locations.(Added by Stats. 1972,...
• Section 7977.
  Any tunnel or underground mine classified as extrahazardous by the division shall comply with the provisions for gassy tunnels in this chapter, as well as...
• Section 7978.
  In any extrahazardous tunnel or underground mine smoking by employees or open flame shall be prohibited. Welding or cutting with arc or flame underground in...
• Section 7979.
  In tunnels or underground mines classified extrahazardous, sufficient air shall be supplied to maintain an atmosphere of all of the following conditions:(a) Not less than 19...
• Section 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...
• Section 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...
• Section 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...
• Section 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...
• Section 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...
• Section 7985.
  All such testing device or devices shall be U.S. Bureau of Mines approved or acceptable to other authorities recognized by the division and shall automatically...

Last modified: October 22, 2018