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Arizona Administrative Code (Last Updated: November 17, 2016) |
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Title 11. MINES |
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Chapter 1. STATE MINE INSPECTOR |
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Article 4. AIR QUALITY, VENTILATION AND RADIATION, AND PHYSICAL AGENTS |
Section R11-1-409. Keeping ventilation doors closed
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When ventilation control doors are opened as a part of the normal mining cycle, they shall be closed as soon as possible to re-establish normal ventilation to working places.
Historical Note
Adopted effective August 18, 1980 (Supp. 80-4).