Clynton R. Nauman

Chairman and Chief Executive Officer

Mr. Nauman brings over 35 years of diversified experience in the mineral industry, ranging from exploration and business development to operations and business management in the precious metals, base metals and coal sectors. Mr. Nauman is also currently the CEO of Asset Liability Management Group and has held various executive and operations positions with Nerco Minerals and Coal companies (now Rio Tinto), Kennecott and Viceroy Resource Corp. Mr. Nauman holds a BSc (Hons) in geology from Otago University, New Zealand.

Brad A. Thrall


Mr. Thrall brings over 25 years of experience and accomplishments in mine operations management, environmental management and mine-closure planning and execution. Mr. Thrall has held a number of operations management positions with Viceroy Resource, Barrick Gold and Goldcorp and is also currently the President of Asset Liability Management Group. Mr. Thrall holds a B.Sc. in Metallurgical Engineering from South Dakota School of Mines and Technology and an MBA from the University of Colorado.

Alan McOnie, FAusIMM

Vice President, Exploration

Mr. McOnie has over 30 years' experience as a professional geologist in mineral exploration, government and the precious metal industry. He holds a BSc in Geology from the University of Otago, New Zealand and an MSc in Geology from the University of Toronto. Prior to joining Alexco, Mr. McOnie worked as a geological and GIS mapping consultant in Australia, New Zealand, and North America, including Alexco's Keno Hill Project, and has held management and senior management level positions all through his career.

James Harrington, MSc

Senior Vice President & Chief Technical Officer, Alexco Environmental Group

Mr. Harrington has 20 years of experience in environmental cleanup of mining, industrial and government sites. He has led the closure design and implementation for mines in the Western United States and Canada for base and precious metals, coal and uranium. He is currently a consultant overseeing some of the largest groundwater remediation projects in the United States, providing strategic advice, regulatory consultation and technical oversight and review. Prior to joining Alexco, Mr. Harrington was Vice President for ARCADIS in the corporate remediation group. Mr. Harrington holds an MSc in microbiology and biochemistry.

Not Pictured:

Michael Clark, CPA, CA

Chief Financial Officer & Company Ethics Officer

Mr. Clark is a Canadian qualified Chartered Professional Accountant with over twelve years of experience, including eight years in senior financial roles within the junior mining sector. Prior to joining Alexco in December 2014, he was with Goldgroup Mining for five years, and held the position of Chief Financial Officer. Mr. Clark also serves on the Board of the Burnaby Hospital Foundation.