EMPLOYEE WAS HELPING ON A BELT MOVE. THEY WERE IN THE PROCESS OF MOVING THE TAILPIECE. A 10' BELT RAIL BECAME FOULED UNDERNEATH THE TAILPIECE. THEY LIFTED THE TAILPIECE WITH A SCOOP AND THE EMPLOYEE PICKED UP ONE END OF THE RAIL TO PULL IT OUT. WHEN HE DID THE TAILPIECE SLIPPED OUT OF THE SCOOP CAUSING THE BELT RAIL TO STRIKE HIS RIGHT LEG CAUSING A LACERATION REQUIRING STITCHES.