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Occupational Safety & Health Standards Board (OSHSB)

Ventilation Inside Shafts, Culverts, and Pipelines

Public hearing: August 18, 2011
Date adopted: March 15, 2012
Filed with Secretary of State: May 1, 2012
Effective date: May 31, 2012

CONSTRUCTION SAFETY ORDERS
Division 1, Chapter 4, Subchapter 4
Article 4, Section 1533
Article 6, Section 1541, Section 1512
TUNNEL SAFETY ORDERS
Division 1, Chapter 4, Subchapter 20, Article 1, Section 8403

Ventilation Inside Shafts, Culverts, and Pipelines