EE WAS ATTEMPTING TO REMOVE A HOIST OPERATED LOADING CHUTE FROM A HOLE OF A RAILCAR. THE CHUTE JAMMED AND THE HOIST TRIPPED ITS OVERLOAD. EE PLACED HAND NEAR CHUTE PIVOT END TO SEE IF CHUTE WA S PLUGGED AND FULL. EE LOST HIS BALANCE AS HE RELEASE THE PIVOT END. THE PIVOT END SWUNG DOWN. SMASHING HIS LEFT FINGER AGAINST THE HOLE OPENING. 12 SUTURES & FRACTURED TIP OF FINGER.