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 mine can be reclassified.

(Added by Stats. 1972, Ch. 1430.)

Terms Used In California Labor Code 7961

  • Division: means the Division of Occupational Safety and Health. See California Labor Code 7951
  • Lower explosive limit: means the lowest concentration at which a gas or vapor can be ignited or will explode. See California Labor Code 7951
  • Mine: means any excavation or opening above or below ground used for removal of ore, minerals, gravel, sand, rock, or other materials intended for manufacturing or sale. See California Labor Code 7951
  • Tunnel: means an underground passageway, excavated by men and equipment working below the earth's surface, that provides a subterranean route along which men, equipment, or substances can move. See California Labor Code 7951
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