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Mr. Stevenson has served as a director of the Company since 2007 and was appointed Chair in April 2023. He was former director of Uranium Resources Inc. from December 2013 – July 2017. He served as a director of Quaterra Resources Inc. from 2007-2014 and as its Non-Executive Chairman from 2008-2013. He is also a founding member of Bedrock Resources, LLC, a private resources financial advisory firm since 2010 and SOS Investors, a private resources investment firm since 2008. Previously, he was a director of Ivanhoe Mines Ltd. He is a senior mining executive who worked for Rio Tinto plc and related companies for 26 years. Mr. Stevenson held many senior positions in the group and prior to his retirement he was Global Head of Information and Technology and Global Head of Business Process Improvement. Formerly, he was Executive Vice President, Chief Financial Officer and a director of Comalco Ltd., and Chief Financial Officer and a director of Kennecott Corporation. Mr. Stevenson has a B.Sc. in Accounting from the University of Utah, is a CPA and spent four years with a predecessor to the firm PriceWaterhouseCoopers LLP.

Mr. Clark has served as a director of the Company since 2001. He is a Chartered Professional Accountant and is the President of Investment and Technical Management Corp., a firm engaged in corporate finance and merchant banking, since 1999. He is currently a director of Russel Metals Inc. and Zephyr Minerals Ltd. He served as Chief Financial Officer and director of Polaris Geothermal Inc. from 2004-2009, and previously as a director of Crown Point Energy Inc., Thunder Energy Inc., APIC Petroleum Corporation and Alberta Clipper Inc., and a trustee of Thunder Energy Trust. He was Executive Chairman of Laurasia Resources Limited, an oil and gas company, from 1988 until its merger with Startech Energy Inc. in 1997. From 1982 to 1987, Mr. Clark was a Senior Manager with Thorne Riddell Chartered Accountants (now KPMG). He earned a Bachelor of Commerce Degree from the University of Witwatersrand in South Africa in 1977, and received a Higher Diploma in Accountancy from the University of Witwatersrand in 1979.

Mr. Earnest has served as director since 2007 and was appointed CEO of the Company in January 2012. He served as the Company’s President and Chief Operating Officer from 2007-2012 and as Senior Vice President, Project Development from 2006-2007. He served as a director of Midas Gold Corp. from April 2011 – May 2014. Mr. Earnest has over 30 years’ experience in the mining industry, including project evaluation, design and construction, mine operations, project optimization and turn-around, mine closure and senior executive roles. He holds a B.S. in Mining Engineering from Colorado School of Mines.

Ms. Friedman has served as a director of the Company since March 13, 2019. She is a director of Golden Minerals Company since December 2021 and former Partner (retired) of Davis Graham & Stubbs LLP from August 2000 through December 2016. Previously, Ms. Friedman was Vice President and General Counsel and held other senior management positions at Golden Minerals Company (formerly Apex Silver Mines Corporation), Cyprus Amax Minerals Company, and Amax Gold Inc. Ms. Friedman has considerable experience in domestic and international mine development projects, including complex development and operations joint ventures, corporate and project finance, and operations matters. Ms. Friedman holds a Bachelor of Arts Degree in History from the University of Illinois and a Juris Doctor Degree from the University of Michigan Law School.

Mr. Keenan has served as a director of the Company since April 30, 2024. He is a retired mining executive and accomplished Chief Financial Officer, with more than 30 years of executive mining industry experience. Mr. Keenan was Executive Vice President and Chief Financial Officer of PolyMet Mining Corp. from 2017 to 2023; Senior Vice President Finance and Treasurer of Newmont Mining Corporation from 2015 to 2017; and served in various senior management roles of Rio Tinto from 1994 to 2015, including Chief Financial Officer of Rio Tinto Energy (Australia) from 2013 to 2015, Rio Tinto Kennecott from 2009 to 2013, and Rio Tinto Diamonds (UK) from 2007 to 2008. Mr. Keenan graduated with a Bachelor of Science Degree in Accounting from the University of Utah in 1990, and he earned his designation as a Certified Public Accountant in the State of Arizona in 1994. Mr. Keenan was a director of the Federal Reserve Bank of San Francisco – Salt Lake City Branch from 2012 to 2014 and served on the Board of the University of Utah, David Eccles School of Business from 2009 to 2013. He was also on the Advisory Committee of the International Copper Association from 2010 to 2013.

Mr. Sylvestre was appointed as a director of the Company on February 13, 2024. He has been a director of Hochschild Mining PLC since May 2022 and a director of Nickel Creek Platinum Corp. since 2012. Mr. Sylvestre is a former senior executive of Kinross Gold Corp., serving as Senior Vice President Americas from September 2018 to November 2022 and Regional Vice President Africa from November 2014 to September 2018. He was a director of Claude Resources Inc. from 2011 to November 2014 and interim President and Chief Executive Officer for most of 2014. Mr. Sylvestre served as President and Chief Executive Officer from 2011 to 2014 and President from 2010 to 2011 of Castle Resources Inc. Prior to this, Mr. Sylvestre had over 30 years of varied operational, technical and senior management roles with Inco Ltd and Vale Inco, including President and CEO of Vale Inco New Caledonia, President of Manitoba Operations and Vice President PT Inco Indonesia. Mr. Sylvestre has extensive international and domestic industry experience with existing and startup operations, focusing on safety excellence, process optimization, organizational effectiveness, community relations, and sustainability. He holds a M.Sc. and a B.Sc. in Mining Engineering from McGill University and Queen’s University, respectively, and is a member of the Professional Engineers of Ontario and the Canadian Institute of Mining and a graduate of Rothman's Institute of Corporate Directors program.