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About OSHSB
Occupational Safety and Health Standards Board Approved Tunnel Safety Order standards (§§ 8400-8568)
After proceedings held in accordance with and pursuant to authority vested in Sections 142, 142.3 and 142.4 of the Labor Code to implement, interpret, or make specific, the Occupational Safety and Health Standards Board, by a majority vote, adopted additions, revisions or deletions to the California Code of Regulations, Title 8, Chapter 4.
For more information regarding the development of Occupational Safety and Health regulations, e-mail oshsb@dir.ca.gov.
- Articles 2 and 20-24 Explosives (effective August 10, 2003)
- Sections 8403, 1533, and 1541 Ventilation Inside Shafts, Culverts, and Pipelines (effective May 31, 2012)