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Article 20. Cellars and Shafts | Midpage
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California Code of Regulations
Title 8
Division 1. Department of Industrial Relations
Chapter 4. Division of Industrial Safety
Subchapter 14. Petroleum Safety Orders—Drilling and Production
Article 20. Cellars and Shafts
Article 20. Cellars and Shafts
State of California
6576
Construction and Maintenance.
6577
Entrance and Exit.