Marie Jackson and Group at the ALS (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption (From left) Marie Jackson, Qinfei Li, Martin Kunz and Paulo Monteiro at ALS Beamline 12.3.2 where they conducted a study on ancient Roman concrete. Credit Photo by Roy Kaltschmidt, Berkeley Lab 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.