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urrent Officers and Directors <br />as of February 23, 2009 <br />Rio Tinto America Holdings Inc. (name change 7128/1997) <br />A Delaware Corporation Incorporated 1/19/1989 <br />Address: 505 South Gillette Avenue <br />Caller Box 3009 <br />Gillette, Wyoming 82717-3009 <br />AVS Entity ID No: 145520 <br />FEIN: 13-3504538 <br />Director/Officer Name Title <br />Role Appointed <br />Kevin L. Baker Director Director 12/6/2004 <br />Michael C. Barrett Director Director 4/23/2007 <br />Christopher Lenon Chairman Director 5/17/1993 <br />Kay G. Priestly Director Director 4/23/2007 <br />Ulf Quellmann Director Director 5/1/2008 <br />Christopher Lenon President and Chief Executive Officer Officer 12/2/1993 <br />Michael C. Barrett Vice President and Chief Financial Officer Officer 4/23/2007 <br />Ulf Quellmann Vice President Officer 5/1/2008 <br />Kevin L. Baker Chief Legal Officer Officer 4/23/2007 <br />Shannon S. Crompton Secretary Officer 3/30/1999 <br />R. J. Schlenker Controller Officer 7/26/2007 <br />Ulf Quellmann Treasurer Officer 5/1/2008 <br />Exhibit 2-25 Revision Date: 3/24/09 <br />Revision No.: MR-98