DSC_0162.jpg (IMAGE) DOE/Idaho National Laboratory Caption Operations and maintenance team members stand back as the 32-ton top head of the Advanced Test Reactor is lowered back into place during an overhaul of INL’s flagship test reactor. Credit Idaho National Laboratory Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC 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.