Old Glass (IMAGE) Washington State University Caption A sample of a fused Broborg hill-fort glass overlaid with cross-sectional X-ray tomography data. This non-destructive technique lets scientists image key internal portions of the sample. Credit Washington State University photo 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.