About us


John MacKenzie

Chief Executive Officer and Director

John MacKenzie was appointed Chief Executive Officer and member of the Board of Directors of Capstone Copper in March 2022 following the combination of Capstone Mining and Mantos Copper. John was previously the Executive Chairman and Founder of Mantos Copper for over 6 years. He has over 30 years of operational and investment experience in the metals and mining sector, with over 27 years of executive management experience from his past roles as CEO at Audley Capital, CEO Copper at Anglo American, and CEO Zinc at Anglo Base Metals. Mr. MacKenzie currently serves as a non-executive director at Horizonte Minerals Plc. He has a Master of Science in Mining Engineering from the University of the Witwatersrand, a Master of Business Leadership from the University of South Africa and completed the Advanced Management Program at Harvard Business School.

Cashel Meagher

President and Chief Operating Officer

Cashel Meagher joined Capstone as President & COO in January 2022. Prior to Capstone he was Senior Vice President and COO of Hudbay Minerals, where he was responsible for international operations, business development, technical services, exploration and corporate social responsibility. He has deep knowledge of Latin American mining operations, having successfully led the construction and ramp up of Hudbay’s Constancia mine. His professional background includes several management positions with Vale Inco’s Canadian operations, where he gained experience in precious metals and base metals exploration, mineral reserve and resource estimation, engineering studies, and open pit and underground operations. Cashel holds a Joint Advanced Major in Geology and Chemistry from Saint Francis Xavier University and is a Professional Geoscientist registered with the Association of Professional Geoscientists of Ontario.

Raman Randhawa

Senior Vice President and Chief Financial Officer

Raman Randhawa is a Canadian Chartered Professional Accountant (CPA, CA) with 20 years of financial and leadership experience in the mining industry. Prior to joining Capstone in 2018, Raman spent 13 years at Goldcorp Inc., a Canadian based global gold producer. At Goldcorp, Raman held a series of senior management roles, including Vice President, Business Planning, Vice President, Business Performance & Reporting and Vice President, Finance, Operations. His background includes roles in Controllership, Treasury and Supply Chain in addition to leading Goldcorp’s Canadian mines from a finance perspective. He has broad management and financial experience with exposure to capital markets and corporate development. He led the development of a Global Supply Chain department and management of multi-billion dollar capital budgets. Raman started his career at the international firm of Ernst & Young.

Peter Amelunxen

Senior Vice President, Technical Services

Peter Amelunxen is a Professional Engineer with 25 years of combined operational and senior management experience, providing corporate oversight and strategic direction to technical functions across various sites, exploration and development projects. Peter joined Capstone in April 2022 as Vice President, Technical Services and was promoted to Senior Vice President, Technical Services in August 2023. Prior to Capstone, Peter was Vice President, Technical Services at Hudbay Minerals. He has deep knowledge of Latin American mining operations, having previously served as a founding partner of Aminpro Chile, President of Aminpro Peru and senior technical consultant to most of the major South American mining companies. Peter has a Bachelor of Science Degree in Mining Engineering from the University of Arizona and a Master of Engineering Degree from McGill University.

Jerrold Annett

Senior Vice President, Strategy & Capital Markets

Jerrold Annett is responsible for leading the company’s investor relations, marketing and sales activities. He joined Capstone in September 2019 and has over 25 years of global mining and capital markets experience, providing strategic direction and executive oversight for several junior exploration and development companies. His mining career started at Teck Resources and Falconbridge as a metallurgist and within their commercial metals sales groups, followed by 10 years in capital markets, most recently with Scotiabank where he was Head of Mining Institutional Sales. He is a Professional Engineer and has a Bachelor of Applied Science in Mining and Mineral Engineering from Queen’s University in Canada.

Wendy A. King

Senior Vice President, Risk, ESG, General Counsel and Corporate Secretary

Wendy King is responsible for leading the company’s legal function and Capstone’s strategy for environmental, social and governance (“ESG”) and sustainability, as well as overseeing the enterprise-wide risk management and global insurance program. Wendy also serves as Corporate Secretary overseeing the corporate governance of Capstone. She has been practicing law for more than 25 years as in-house counsel and with a national firm as an international-tax specialist. She holds an LLB, a Masters in International Tax Law, a Masters of Business Administration, an ICD.D certification with the Institute of Corporate Directors and has completed the Advanced Management Program at Harvard University. Wendy joined Capstone following her role as Senior Vice President Government Relations, General Counsel, Chief Compliance Officer and Corporate Secretary at Central 1 Credit Union. Prior to this role, she served as Senior Legal Counsel with Weyerhaeuser Company.

Chris Richter

Senior Vice President, Corporate Development

Chris Richter is responsible for leading the company’s corporate development and human resources activities. He was appointed Senior Vice President, Corporate Development in June 2022. Chris was previously the Chief Integration Officer for Capstone, and before that, Chief Development Officer of Mantos Copper, where he supported the execution of the merger with Capstone Mining. Chris has 18 years of financial and leadership experience in the mining and renewable energy industries, including as President and CEO of AuRico Metals. He has completed over $22 billion in transactions leading and contributing to M&A efforts at AuRico Gold and Barrick Gold. Chris holds a Master of Arts Degree in Economics from the University of Toronto and a Bachelor of Arts Degree in Economics and Political Science from the University of Waterloo. He is also a CFA Charterholder.

James Whittaker

Senior Vice President, Head of Chile

James Whittaker joined Capstone in August 2023 as Senior Vice President, Head of Chile. James is a Metallurgical Engineer with over 30 years of experience leading operations and project developments in North and South America. Prior to Capstone, he held various executive positions with BHP Chile, OceanaGold and Barrick Gold, including President of the Escondida Copper Mine, Executive General Manager at the Haile Gold Mine, and Executive General Manager at Barrick Gold. James holds an Executive MBA from Queen’s School of Business and a Bachelor of Engineering Degree in Extractive Metallurgy from Dalhousie University.