THE SECTION FEEDER HAD SHEARED A PIN IN THE PICK BREAKER DRIVER HUBS. EE WAS ON TOP OF THE FEEDER TRYING TO LINE UP THE HOLES AS COWORKER WAS MOVING THE COUPLER BY HAND. EE PLACED HIS LEFT IND EX FINGER IN THE OUTER HUB TO HOW CLOSE THE TWO HOLES WAS FROM PROPER ALIGNMENT AT THAT MOMENT THE CHAIN HUB JUMPED, PINCHING EE'S LEFT INDEX FINGERTIP BETWEEN THE TWO HUBS. THIS RESULTED IN