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Article 23. Erection of Derricks and Masts | 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 23. Erection of Derricks and Masts
Article 23. Erection of Derricks and Masts
State of California
6582
Portable Telescoping Derrick or Mast.
6583
Hydraulic Lifts for Derricks and Masts.
6584
Telescoping Gin Pole Mast: Locking Device.