Senior Management

Colin Sinclair

Colin Sinclair

Exploration Manager - South America

B.Sc Geology (Hons); M.Sc.

Colin has over 40 years’ experience in exploration and mine geology in Africa, Middle East, South America and Australia, including 5 years in Chile (1992 to 1997) as a Managing Geologist. He has held senior geological and managerial positions, including General Manager South America for North Limited, Project Manager North Parkes Project for North Limited and Chief Geologist Ashanti Goldfields, Ghana. Colin is widely experienced in base and precious metal geology, particularly in copper and gold. His experience covers major deposits, various treatment processes and ranges from initial exploration through feasibility studies to operating mines.

 Geoffrey Widmer

Geoffrey Widmer

Joint Company Secretary

MBA, B.Sc.Econ

Appointed as joint Company Secretary on 26 April 2018, Geoffrey is the Principal in Palliser Group which specialises in corporate secretariat and governance, financial management services and resource evaluations.  His qualifications include a Bachelor’s Degree in Economics (Monash University) and an MBA, (Queen’s University, Canada) and an Advanced Diploma Spanish Language, Don Quijote Language School, Spain.

He is also a Fellow of the Australian Institute of Company Directors (FAICD), Member of the Governance Institute of Australia (MGIA) (Grad Diploma Advanced Corporate Governance) and Members of the Association of Independent Petroleum Negotiators (AIPN) and Society of Petroleum Engineers.

He has extensive board and executive commercial experience in energy and resource exploitation in Australia, Asia and the Americas as well as in the infrastructure and technology industry sectors. Geoffrey has experience in corporate governance, energy project evaluation and financial analysis, business strategy, technology commercialisation, M&A and contract negotiations.

Geoffrey is currently the Honorary Consul for the Republic of Colombia and was previously the Victorian Vice-President of the Spanish Chamber of Commerce. He speaks Spanish and is a frequent visitor to both Colombia and Spain. Also he is an Honorary Justice of the Peace (HJP).



Andrew Metcalfe

Chief Financial Officer/ Joint Company Secretary


Appointed as Company Secretary/Chief Financial Officer on 28 May 2018, Andrew is a qualified accountant, experienced company secretary and governance advisor. He is a member of the Australian Certified Practising Accountants, Fellow of the Governance Institute of Australia (formerly Chartered Secretaries Australia) and a Graduate of the Australian Institute of Company Directors. Mr. Metcalfe provides CFO and company secretarial services and advises on corporate governance matters for a number of ASX listed, public and private companies and not for profit organisations. Mr. Metcalfe also manages the regulatory functions of these companies.


William Howe

Chief Operating Officer

B.Sc., Fellow of the AusIMM

Appointed as Chief Operating Officer on 23 March 2018, William, Hampton Mining founder, has over 30 years’ experience in the mining industry and has worked in southern and west Africa, Australia, South East Asia and North and South America. He has been instrumental in the development of a number of new mining operations in Australia and South East Asia including the development and management of the first copper heap leach operation in Australia. He specialises in optimising existing operations in addition to the development of new operations, both in underground and open pit environments, and has extensive experience in mine development, mine management and corporate management. William was a founding director of Straits Resources Limited and was Managing Director of Ghana Gold Mines Limited, Hargraves Resources NL, Selwyn Mines Limited and Hampton Mining Limited.