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

4VAC25-40-3280: Ventilation door closing

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

When ventilation control doors are opened as a part of the normal mining cycle, they shall be closed as soon as possible to reestablish normal ventilation to active areas.

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

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