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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 18. GASSY MINES |
Section R11-1-1841. Stoppings in crosscuts between intake and return airways
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Stoppings in crosscuts between intake and return airways, on entries other than room entries, should be built of solid, substantial material; exposed surfaces should be made of fire-resistant material such as gunite-covered wood or material, asbestos sheeting, masonry, concrete or reinforced concrete, and steel or covered steel. If the material mined is combustible, stoppings should be made of incombustible material.