A.R.S. § 27-311: Fire prevention and protection

Every operation where there appears to be any possibility of fire or serious hazards from fire shall provide sufficient fire protection. This shall include water supply with adequate pressure, fireplugs, hose and nozzles, and chemical, automatic chemical or water extinguishers, which shall be properly located to provide for the safety of all employees. All underground mines shall be equipped with adequate rescue equipment and the operators thereof shall provide proper training in its use to rescue crews.