Management & Board

Metallic Minerals La Plata Site Visit - August 2023

Greg Johnson

Chief Executive Officer and Chairman of the Board

Mr. Johnson has 35+ years experience in the mining industry with an exceptional track record in exploration, development and financing of large scale projects to create value for shareholders. Prior to joining Metallic Minerals, Mr. Johnson held the positions of President and CEO at Wellgreen Platinum and South American Silver, and was a co-founder and executive at NovaGold Resources. Mr. Johnson began his career with Placer Dome (now Barrick Gold), where he held various senior roles in domestic and international exploration. Mr. Johnson has developed broad experience in the capital markets and has been involved in raising over $650 million in project financing. For his role in the discovery and advancement of the 40-million-ounce Donlin Creek gold deposit in Alaska, Mr. Johnson was a co-recipient of the PDAC's Thayer Lindsay International Discovery Award. In addition, Mr. Johnson has been recognized for his work in sustainable development and community engagement and was awarded the Robert E. Leckie Award by the Yukon Government for excellence in environmental stewardship.

Scott Petsel, P.Geo.


Mr. Scott Petsel, MBA, P.Geo., has 35+ years of experience in all facets of mineral exploration with particular focus on large scale precious and base metals systems. In addition to having extensive international experience, he has spent more than 20 years working in the Yukon, Alaska and British Columbia on significant advanced exploration and development stage projects including the Galore copper-gold-silver project (Teck/Newmont), Donlin gold project (NovaGold/Barrick), Upper Kobuk copper-zinc-silver-gold projects (Trilogy/South 32), and the Kensington gold mine (Coeur) amongst others. Mr. Petsel received his geology degree from Fort Lewis College in Durango, Colorado, near Metallic’s La Plata Project, and his MBA at the University of Nevada, Las Vegas.

Stephen Enders, Ph.D.

Independent Director

Dr. Stephen Enders brings 45+ years experience in mineral exploration and mining, working on some of the world’s most significant copper and gold deposits. His distinguished career includes former positions as Senior Vice President of Worldwide Exploration for Newmont Mining Corporation, the world’s largest gold company, and President of Phelps Dodge Exploration Corporation (now Freeport McMoRan), one of the world’s largest copper companies. In addition, he was also a director of Copper Mountain Mining Corp. (recently acquired by HudBay Mining) and former Executive Chairman, Director, and COO of EMX Royalty Corporation. As a co-founder of Cupric Canyon Capital LLC, Steve has been part of the team that has advanced the Khoemacau copper-silver mine in Botswana from exploration into production backed by private equity investors.

In addition to his achievements in industry, Dr. Enders has served as Department Head for Geology and Geological Engineering and for Mining Engineering at the Colorado School of Mines until 2023 and is on the Board of Governors for the CSM Foundation.
Dr. Enders is an Honorary Lecturer and past President of the Society of Economic Geologists (SEG) as well as former President of the SEG Foundation Board of Trustees. He received the Distinguished Achievement Medal from the Colorado School of Mines in 2009, the Ben F. Dickerson Award from the Society for Mining, Metallurgy & Exploration in 2014, and the Ralph W. Marsden Award from the Society of Economic Geologists in 2016.

Dr. Enders holds a BSc degree in geological engineering from the Colorado School of Mines and MSc and PhD degrees from the University of Arizona.

Peter Harris

Independent Director

Mr. Peter Harris is a mining engineer with 40+ years of global mining industry experience in project evaluation, development, mine construction and operations. Peter’s career is highlighted by prominent roles with Placer Dome (now Barrick Gold) as Senior Vice President of Project Development and President & CEO of Placer Dome South Africa. He also was part of the early formation of NovaGold Resources as Chief Operating Officer. Peter brings a deep understanding of what it takes to have a successful mining project having been involved in various stages of evaluation, development, construction and operation of over 20 mineral projects in his career in North and South America, Africa, Australia and Papua New Guinea. His experience ranges from high-grade underground operations to large scale open pit deposits of base & precious metals. He has a strong track record of leading corporate development teams in strategic acquisitions, financing as well as structuring of engineering initiatives to optimize costs and identify opportunities. A mine engineering graduate of the University of Newcastle-upon-Tyne with executive and board of director experience in mining and related industries, Peter also led the design and introduction of World Bank recognized employee programs for affected mine-workers related to major mine re-structuring and AIDS programs.

Gregor Hamilton

Independent Director

Mr. Hamilton has 30+ years experience in the mining sector as a geologist, investment banker and entrepreneur. Mr. Hamilton began his career in mineral exploration in South America and later worked for 11 years in investment banking in London and Sydney, specializing in structured finance and M&A. Since 2010, Mr. Hamilton has been involved in the acquisition and development of mineral properties within both public and private resource companies.

Mr. Hamilton has a BSc in Geology from the University of Edinburgh and an MSc in Mineral Project Appraisal from the Royal School of Mines, Imperial College, London. He also serves on the board of Stillwater Critical Minerals.

Doug Warkentin

Independent Director

Mr. Doug Warkentin (B.Sc., P. Eng) is a metallurgist and process engineer with 30+ years of applied mine processing expertise. Doug graduated from UBC with a degree in Mining and Mineral Process Engineering and has been a member of the Association of Professional Engineers and Geoscientists of BC since 1992. Doug is an industry innovator and entrepreneur and author of numerous technical papers and co-inventor of multiple patented process technologies. He has worked both in plant operations and contract research and has been a principal in companies providing process development services and environmental technologies to the mining industry. Areas of expertise include base and precious metal flotation, precious metal hydrometallurgy, resource recovery and treatment of mine wastes. He is currently Senior Metallurgist for Kemetco Research Inc. in Vancouver, BC.

Jeff Cary, CPG, MSc

Senior Project Geologist

Exploration geologist with over 30 years of experience in the United States, Canada and Mexico. Member of multi-disciplinary teams which have produced positive feasibility studies on a +6 million ounce gold, silver and copper resource in Nevada and a +1 million ounce gold resource in the Yukon. Responsibilities include multi-year drill program design and execution, resource estimation, geological modelling, project generation and asset evaluation.

Danie Grobler Ph.D

Consulting Geologist

Dr. Danie Grobler has more than 25 years of industry experience as an exploration and mine geologist including most recently as Head of Geology and Exploration for Ivanplats Pty Ltd (an Ivanhoe Mines company) where since 2011 he led the delineation and advancement of Ivanhoe’s world-class Platreef PGE-Ni-Cu mine on the northern limb of the Bushveld complex. Including previous experience as Project Manager at Platinum Group Metals’ at their project on the Bushveld’s northern limb, Dr. Grobler brings decades of senior level experience focused on the discovery and mining of battery and platinum group metals in ultramafic magmatic systems and has published numerous papers on Ivanhoe’s Flatreef deposit.

Jacob Longridge Ph.D

Consulting Geologist

Dr. Jacob Longridge is an economic geologist who has assisted a range of companies, from prospect generators through to active miners in Canada and Peru. He has worked on projects from high level district-scale target generation through to resource expansion. He has been actively engaged in mineral exploration in the Yukon, Western Canada and South America for multiple commodities including Copper, Gold and Silver. He prides himself on assisting companies achieving their corporate strategic goals through efficient mineral exploration. Dr. Longridge holds a Doctor of Science in Economic Geology from the prestigious Royal School of Mines, Imperial College and a First Class Honours in Geology from Royal Holloway, University of London.

Wolfgang Maier

Senior Geologic Advisor

Dr. Maier has 30 years of global experience and, in addition to authoring or co-authoring 144 publications which have received more than 7,000 citations to date, he has been a contributing author or editor of numerous books, monographs, and geological maps. Dr. Maier studied geology at the Ludwig Maximilian University of Munich, Germany and at Rhodes University, South Africa, including doctoral studies on the Bushveld Complex in 1992. He taught igneous petrology and economic geology at the Universities of Pretoria (South Africa), University of Quebec at Chicoutimi (Canada), UWA (Australia), and Oulu (Finland) before joining Cardiff University in 2013, where he is currently a professor with the School of Earth and Environmental Sciences.

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