George G. Dethlefsen - Chief Executive Officer
George G. Dethlefsen was appointed Chief Executive Officer in August 2014 and has been a member of the Board of Directors since July 2013. Previously Mr. Dethlefsen was Managing Director at Quintana Energy Partners where he was the sector head of coal and downstream investments. Prior to joining Quintana, Mr. Dethlefsen worked for the General Partner of Natural Resource Partners, L.P. and worked in the Mergers & Acquisitions Department of Goldman, Sachs, & Co.  Mr. Dethlefsen attended Rice University, where he earned a B.A. in Economics and Managerial Studies, and The University of Texas at Austin, where he earned an MBA.