RECEIVED WORD FROM THE CONSIL THAT THE HOIST WAS DRAWING TOO MANY AMPS. DETERMIONE IT TO BE UNRELIABLE AND BEGAN AN IMMEDIATE EVACUATION FROM ALL LEVELS UNDERGROUND. ELECTRICIANS WORKED ON THE HOIST AND FOUND A SMALL MERCURY SWITCVH THAT HAD FAILED AND REPLACED IT. RECEIVED WORK THE HOIST WAS RUNNING GOOD AT 1005 AND PUT THE CREWS BACK TO WORK.