31 HOIST LOST POWER IN THE LOWER MODE. ELECTRICIANS WERE CALLED AND THEY REPLACED ALL SIX CONTACTS IN THE MAIN LOWER CONTROL CABINET AND RETURNED THE HOIST TO SERVICE. MSHA WAS CALLED AT 10:55 A.M. AND TOLD HOIST WAS DOWN AND THEN CALLED AT 11:43 AM SAME DAY AND TOLD THAT HOIST WAS BACK IN SERVICE.