Power was lost to the slope hoist & 10 employees walked approx. 1400' up the slope to the surface. EE contacted MSHA once reaching the surface at 4:45 p.m. to report the power outage. Five employees exited the mine via the Escape Hoist. All personnel were evacuated by 5:30 p.m. Power to slope hoist, communication and ventilation were restored by 3:00 a.m.