Arizona Administrative Code (Last Updated: November 17, 2016) |
Title 11. MINES |
Chapter 1. STATE MINE INSPECTOR |
Article 11. HOISTS AND SHAFTS |
Section R11-1-1122. Protection from falling ground
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In shaft sinking, adequate protection from falling ground must be provided. The timber, steel, roof bolts, concrete or any device used for restraining ground must be kept a reasonable distance from the bottom of the shaft.