EE WAS PLACING UP 54-INCH TOP BELT STRUCTURE OFF OF A FLAT CAR ALONG 4 NORTH #2 BELT LINE. EE WAS IN THE PROCESS OF LOWERING A PIECE OF STRUCTURE TO THE GROUND AND PINCHED THE TIP OF HIS LEFT MIDDLE FINGER BETWEEN THE STRUCTURE AND A TIMBERTHE INJURY RESULTED IN A LACERATION WHICH REQUIRED 6 SUTURES TO CLOSE.