HOIST LOST POWER AT 3:10 PM AND ELECTRICIANS WERE CALLED TO REPAIR IT. MSHA WAS CALLED AT 3:23PM AND TOLD THAT #31 HOIST AT FLETCHER WAS OUT OF SERVICE. THE ELECTRICIANS FOUND ALL AUXILLARY C ONTACT THAT WAS BAD ON THE MAIN LOWER CONTACTS AND CAHNGED IT OUT. HOIST WAS RETURNED TO SERVICE AT 5:29 PM SAME DAY AND MSHA WAS CALLED AND TOLD HOIST WAS BACK IN SERVICE.