Stephen Twyerould, Ph.D.
Chief Executive Officer and President
Dr. Twyerould has over 35 years of experience in the mining industry including executive, operations, projects and technical, covering a wide range of commodities with a focus on copper, gold and nickel. Dr. Twyerould has a proven track record of unlocking potential to deliver operational improvements and business growth. He has been instrumental in raising finance and providing leadership to several successful junior and mid-tier mining companies. Mr. Twyerould received a doctorate in Geology and Geochemistry from the University of Oregon in 1997 and a BSc (Hons) in Geology from the University of Melbourne, Australia in 1984.
Roland Goodgame, Ph.D.
Senior Vice President Business Development
Dr. Goodgame has been involved in the mining industry for over 30 years and has held senior roles in several large mining companies. He served as Senior Geologist of Anglo American PLC from March 2002 to January 2007 and was responsible for Asia/Pacific nickel and copper exploration and project evaluation/generation. Prior to this, he spent 14 years with WMC Resources Ltd., where he gained extensive experience in small and large scale gold and nickel mining. He received his doctorate in Geology and Geochemical Modeling at the University of Oregon in 1997. Dr. Goodgame graduated with a B.Sc. in Geological Engineering from the Colorado School of Mines in 1987.
Craig Hallworth
Senior Vice President and Chief Financial Officer
Mr. Hallworth is the former Chief Financial Officer, Arizona Business Unit at Hudbay Minerals where he held various finance leadership roles over 13 years. While at Hudbay, he led the development and optimization of all financial aspects of the Copper World Project, a re-designed mega-project with over one billion tons of copper resources. He was also involved at the corporate level in the financing and construction of three new mines in Canada and Peru. Prior to Hudbay, Mr. Hallworth was a manager with Ernst & Young LLP servicing a portfolio of copper and gold mining companies. Mr. Hallworth is a CPA accountant and CFA Charterholder and he obtained an Honors Bachelor of Commerce from Ryerson University.
Robert Winton, P.Eng
Senior Vice President / General Manager
Excelling in the areas of strategic planning and leadership, Mr. Winton brings to Excelsior over 20 years of management experience within the mining industry. Mr. Winton was most recently the President and GM of Nyrstar Clarksville Inc., where he was responsible for the Clarksville Smelter, a 130 kiloton zinc refinery located in Tennessee. From 1997 to 2016, Mr. Winton enjoyed a diverse and accomplished career with Hudbay Minerals Inc., a diversified mining company that produces copper, gold, silver and zinc from several operations throughout North and South America. Most notably, from 2014 to 2016, Mr. Winton was Vice-President of the Manitoba Business Unit for Hudbay Minerals Inc.; in this role he was responsible for an autonomous base-metal business unit that comprised three underground mines, three mills, a zinc refinery, and over 1,400 employees. Mr. Winton is a registered Professional Engineer; he graduated from the University of Saskatchewan with a Bachelor of Science in Chemical Engineering.
Sheila Paine
Corporate Secretary
Ms. Paine has over 30 years’ experience as a senior paralegal, specializing in corporate, securities and regulatory matters both in Canada and the United States. For the past 15 years, Sheila has acted as Corporate Secretary or Assistant Corporate Secretary for a number of public companies trading on various stock exchanges. In addition to being the Corporate Secretary of Gunnison Copper, she is currently the Corporate Secretary of Global Crossing Airlines Group Inc. (Cboe Exchange Canada and OTCQB) and Intrepid Metals Corp. (TSX-V and OTCQB).
