21 MILL CONVEYOR STOPPED WHEN SPILLAGE WAS CARRIED ON THE RETURN SIDE OF THE BELT, TO THE TAIL PULLEY UNTIL THE PULLEY WAS CHOKED WITH SALT. THIS WOULD HAVE PUT TENSION ON THE TOP BELT. WITH P OWER LOCKED AND TAGGED OUT AND GUARDS REMOVED, EMPLOYEE WAS INVESTIGATING THE TAIL PULLEY WHEN THE TENSION RELEASED, AND RETURN SIDE OF BELT TRAVELED INTO PULLEY, PULLING LEFT ARM BETWEEN BEL