DURING REGULAR OPERATION OF PACKING LINE #2, THE HORIZONTAL PROPELLER SPOUT #10 OF THE VENTOMATIC PACKER MACHINE GOT PLUGGED WITH A SMALL PIECE OF METAL. THE OPERATOR PROCEED TO STOP THE MACHI NE AND STARTED TO RELEASE THE PULLEY WASHER WITH A PIPE WRENCH OF 36"". IN HIS ATTEMPT TO UNSCREW THE PULLEY WASHER THE WRENCH SLIPPED FROM THE WASHER AND HE FELT AGAINST THE SPOUT FRAME, INJU