Cal. Code Regs. tit. 8, § 7162
(b) The entire escape exit shall be inspected at least once each month for rock falls, fire hazards, deterioration of ladders, timbers, and other equipment necessary to maintain an adequate escapeway.
If any condition is found in an escape exit making it inadequate for an escapeway, repairs shall be commenced immediately and completed with reasonable diligence.
A written report shall be made of the escape exit inspection. The report shall list all hazardous conditions found in the escape exit. It shall be signed by the person or persons who made the inspection, and shall be kept at the mine office for two years, during which period it shall be available for examination by representatives of the Division.
Note: If desired, the general mine inspection and escape exit inspection required by subsections (a) and (b) may be combined with the safety committee inspection required by Section 6964.