3D printing tungsten (IMAGE) Iowa State University Caption Iowa State's Sougata Roy is leading a project to explore new ways to process tungsten for use in nuclear reactors. Credit Photo by Christopher Gannon/Iowa State University. Usage Restrictions None License Original 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.