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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 R11-1-1840. Entries or rooms shall not be started off entries
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Entries or rooms shall not be started off entries beyond the last open crosscuts, except that room necks and entries not to exceed 18 feet in depth may be turned off entries beyond the last open crosscuts if such room necks or entries are kept free of accumulations of flam- mable gas by use of line brattice or other adequate means.