GroundRules
4VAC25-40-3190: Air intakes and returns
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
Separate mine openings shall be provided for main intake and return air currents except during early stages of development. A multiple compartment shaft is a single opening for the purpose of this standard.
Collected 2026-09-14T04:46:03Z. Source file · JSON