A 55 GALLON DRUM HAD BEEN FILLED WITH PIECES OF WOOD WHICH HAD BEEN REMOVED FROM CONVEYOR BELTS AND CHUTES ON THE 4TH FLOOR OF THE PLANT. THE EMPLOYEE ROLLED THE BARREL TO A CHUTE TO DUMP IT I NTO SCRAP PILE. HE LEANED THE BARREL AGAINST THE CHUTE AND ATTEMPTED TO LIFT THE BOTTOM TO DUMP THE BARREL. EMPLOYEE FELT PAIN IN HIS GROIN.