Chapter 2 - GASSY AND EXTRAHAZARDOUS TUNNELS
- Section 7965 - Operation under special procedures
- Section 7966 - Tests for gas or vapors
- Section 7967 - Notification to division when gas levels in excess of 10 percent of lower explosive limit
- Section 7968 - Ordering work halted
- Section 7969 - Review of plans for electrical lighting and power for equipment
- Section 7970 - Smoking prohibited
- Section 7971 - Ignition of gas or vapor in tunnel or mine
- Section 7972 - Level of gas at 20 percent of lower explosive limit
- Section 7973 - Notice to employees of special orders made by division following inspection
- Section 7974 - Ventilation
- Section 7975 - Kill button; cutting off power
- Section 7976 - Extinguishers
- Section 7977 - Compliance requirements of tunnel or mine classified as extrahazardous
- Section 7978 - Smoking or open flame prohibited in extrahazardous tunnel or mine
- Section 7979 - Air supply in extrahazardous tunnel or mine
- Section 7980 - Electrical equipment and machines in extrahazardous tunnel or mine
- Section 7981 - Escape chamber or alternate escape rout
- Section 7982 - Records of air flow and air sample tests
- Section 7983 - Cutoff switch on main fan line used for ventilation
- Section 7984 - Devices automatically testing atmosphere for gases and vapors
- Section 7985 - Testing devices to be U.S. Bureau of Mines Approved