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Article 12. Ventilation and Air Quality | Midpage
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California Code of Regulations
Title 8
Division 1. Department of Industrial Relations
Chapter 4. Division of Industrial Safety
Subchapter 20. Tunnel Safety Orders
Article 12. Ventilation and Air Quality
Article 12. Ventilation and Air Quality
State of California
8437
Ventilation and Air Quality.
8438
Dust Control.