Part VIII - Compressed Air, Gases, and Boilers-Surface and Underground
- Section 4VAC25-40-1100 - Boilers and pressure vessels
- Section 4VAC25-40-1110 - Air compressors
- Section 4VAC25-40-1120 - Compressed-air receivers
- Section 4VAC25-40-1130 - Compressor-air intakes
- Section 4VAC25-40-1140 - Draining compressed-air receivers
- Section 4VAC25-40-1150 - Inspection openings in compressed-air receivers
- Section 4VAC25-40-1160 - Operating compressors
- Section 4VAC25-40-1170 - Discharge pipes
- Section 4VAC25-40-1180 - Repealed
- Section 4VAC25-40-1190 - Repairs
- Section 4VAC25-40-1200 - Improper uses
- Section 4VAC25-40-1210 - Locking devices
- Section 4VAC25-40-1220 - Storage of oxygen cylinders
- Section 4VAC25-40-1230 - Maintaining regulators
- Section 4VAC25-40-1240 - Tank valves to be kept closed
- Section 4VAC25-40-1250 - Securing cylinders
- Section 4VAC25-40-1260 - Valves and gauges to be protected
- Section 4VAC25-40-1270 - Use of gauges, regulators and valves
- Section 4VAC25-40-1280 - Boiler equipment and maintenance
- Section 4VAC25-40-1290 - Welding operations
- Section 4VAC25-40-1300 to 4VAC25-40-1310 - Repealed