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Article 21. Access and Exits, Derrick and Mast Floors | 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 21. Access and Exits, Derrick and Mast Floors
Article 21. Access and Exits, Derrick and Mast Floors
State of California
6579
Access to and Exit from Derrick and Mast Floors.