#31 HOIST LOST POWER DUE TO A FAULTY BACKOUT SWITHC. HOIST WENT DOWN AT 6:35 AM. HOISTMAN CALLEDWESTFORK MINE HOISTMAN AT 6:45 FOR BACKUP & CALLED MSHA AT 7AM & REPORTED HOIST DOWN. ELECTRICIA NS REPAIRED WIRING & CHANGED BACKOUT SWITHC. HOISTMAN CALLED WESTFORK HOISTMAN & REPORTED #31 HOIST BACK IN SERVICE AT 11:15AM. THEN HOISTMAN CALLED MSHA BACK & REPORTED HOIST BACK IN SERVIC