THE SHAFT CREW WAS EXITING THE MINE ON THE EAST SKIP OF THE PRODUCTION HOIST IN MAN SAFETY MODE.THE SHAFT CREW GOT OFF THE SKIP AT COLLAR & THE HOIST OPERATOR RAISED THE SKIP TO THE DUMP POSIT ION SO HE COULD SWITCH BACK TO MANUEL MODE. WHEN IT ARRIVED AT THE DUMP POSITION, THE ACTUATING ARM ON THE BRAKE SET LIMIT SWITCH BROKE. THE MINE WAS EVACUATED AT 3:25AM & MINERS SENT BACK 4A