People: USEC Inc (USU)

Mr. Sigmund L. Cornelius is Independent Director of USEC Inc. Mr. Cornelius retired in January 2011 from ConocoPhillips, an integrated energy company, where he was Senior Vice President, Finance, and Chief Financial Officer from 2008 to 2010. Prior to that, Mr. Cornelius served as Senior Vice President, Planning, Strategy and Corporate Affairs from 2007 to 2008, having previously served as President, Exploration and Production — Lower 48 from 2006 to 2007 and President, Global Gas from 2004 to 2006. Mr. Cornelius joined ConocoPhillips predecessor Conoco Inc. in 1980. Mr. Cornelius also serves on the Board of Directors of Carbo Ceramics Inc., NiSource Inc., Parallel Energy Trust and Western Refining, Inc.