R11-1-716. Underground mine evacuation drills

Underground mine evacuation drills shall be held for each shift once every six months. These evacuation drills shall involve all employees on each shift and shall include: 1. Activation of fire alarm system. 2. Evacuation of all men from their work areas to the surface of designated central evacuation points at some time other than shift change. Records of such drills, showing the time and date, shall be kept for at least two years after each drill.