shielding materials comparisons (IMAGE) DOE/Sandia National Laboratories Caption Mechanical properties of representative high-strength materials versus natural seashell and Sandia National Laboratories-developed coating. Credit Data provided by Hongyou Fan and Guangping Xu, Sandia National Laboratories Usage Restrictions media 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.