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Audra Walsh is a Professional Engineer with over 20 years of technical, operating, management and board experience in the mining industry. She is CEO of Minas de Aguas Tenidas S.A.U. (MATSA), a privately held company owned by Trafigura and Mubadala, located in the Huelva Province, Spain. She formerly served as a member of the Board of Directors of Orvana Minerals Corp., and was Chair of their Technical, Safety, Health, Environment and Sustainability Committee. She also formerly held the position of President and CEO of Sierra Metals Inc., Minera S.A. and A2Z Mining Inc. She has held senior positions with Barrick Gold Corporation and Newmont Mining Corporation. Ms. Walsh is a graduate with a Bachelor of Science (Mine Engineering) from the South Dakota School of Mines and Technology in Rapid City, South Dakota, United States of America. She is a registered member of the Society of Mining, Metallurgy and Exploration.