Core Sample Collection (IMAGE) University of South Florida (USF Health) Caption Dr. Patrick Schwing (USF), Co-Chief Scientist, and researchers process a core sample in search for IXTOC oil. Credit Devon Firesinger 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.