California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 7 - General Industry Safety Orders
Group 2 - Safe Practices and Personal Protection
Article 7 - Miscellaneous Safe Practices
Section 3305 - Misuse of Oxygen Prohibited

(a) To purge pipe lines, tanks, or any confined area.

(b) To supply head pressure in a tank.

(c) In pneumatic tools.

(d) In oil preheating burners.

(e) To start internal combustion engines.

(f) For ventilation.

(g) For "dusting" clothing.

(h) In any other way as a substitute for compressed air.