WHILE LOWERING THE CAGERS IN SINGLE DRUM ON THE NORTH SIDE THE HOIST WAS BEING SLOWED TO STOP ON THE 3700 LEVEL WHEN THE HOIST SUDDENLY GAINED SPEED AND WENT APPROXIMATELY 80' BEFORE THE HOIST MAN COULD STOP IT. ON WEDNESDAY AT 1000 WE FOUND A BAD RELAY COIL AND REPLACED IT.