Composite Pellets (IMAGE) DOE/Oak Ridge National Laboratory Caption Composite pellets are melted, compounded, and extruded layer-by-layer into desired forms. Credit Oak Ridge National Laboratory Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.