EE WAS ON TOP OF THE 6TH TRAY WHEN HE WENT TO UNHOOK AIR LANCE FROM AIR SUPPLY. HE FIRST HAD TO GO THROUGH A SELF-CLOSING SAFETY GATE TO GO DOWN TO OVERFLOW BOXES. WHILE OPENING GATE, THE GATE STOPPER BROKE, HE LOST HIS BALANCE & THE GATE QUICKLY CLOSED ON HIS FINGER, RESULTING IN A TUFT FRACTURE TO HIS LT. MIDDLE FINGER.