GroundRules
4VAC25-40-3270: Requirements for ventilation doors
Where this section sits in the code
- Title 4. Conservation And Natural Resources
- Agency 25. Department of Energy
- Chapter 40. Safety and Health Regulations for Mineral Mining
- Part XV. Safety and Health Regulations—Underground Only
- Article 3. Air Quality, Radiation and Physical Agents
Ventilation doors shall be:
1. Substantially constructed;
2. Covered with fire-retardant material, if constructed of wood;
3. Maintained in good condition;
4. Self-closing, if manually operated; and
5. Equipped with audible or visual warning devices, if mechanically operated.
Collected 2026-09-14T04:46:04Z. Source file · JSON