EE WAS CLIMBING DOWN OFF AN ELEVATED WALKWAY PLATFORM. AS HE WAS STEPPING DOWN, EE PANICKED WHEN HE MISSED A STEP AND CAUGHT HIS HAND ON A PROTRUDING BOLT AND LACERATED A FINGER ON HIS RIGHT HAND (8 STITCHES). (WAS DESCENDING LADDER MADE IN-HOUSE, PIVOTS/TRANSITION BOX; LOCATED BY CONVEYOR.)