Virginia regulations · Through 2026 Regular Session (effective July 1, 2026)

4VAC25-40-3260: Ventilation door operation

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 not operated mechanically shall be designed and installed so that they are self-closing and will remain closed regardless of the direction of the air movement.

Collected 2026-09-14T04:46:04Z. Source file · JSON

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