Tracy A. Stevenson has served as a director since December 2013. Mr. Stevenson is a founding member of Bedrock Resources, LLC, a private financial advisory firm focused on natural resource businesses and of SOS Investors LLC, a private investment firm. He previously was Global Head of Information Systems and Global Head of Business Process Improvement at Rio Tinto PLC. In addition, he served as Executive Vice President, Chief Financial Officer and a director of Comalco Ltd. and as Chief Financial Officer and a director of Kennecott Corporation. Mr. Stevenson serves as a director of Quaterra Resources Inc. since July 2007 and was Non-Executive Chairman of Quaterra from February 2008 to June 2013. Mr. Stevenson also serves as a director of Vista Gold Corp. and previously served as a director of Ivanhoe Mines Ltd. In addition, he is a founding member of SOS Investors LLC, a private investment firm. Mr. Stevenson, a CPA, graduated Magna Cum Laude with a Bachelor of Science Degree in Accounting from the University of Utah.