Board of Directors and Senior Management

Peter Cook


Mr Cook is a geologist BSc (App Geol 1983), mineral economist (MSc Min Econ 1995 WASM) and highly experienced veteran of the Australian resource sector. He is currently the Executive Chairman of Westgold Resources and has more than a decade of association with the Company and its assets. Mr Cook has substantial experience in the exploration, development, mining, construction, permitting and financing of development projects within Australia as well as the corporate management of listed public entities.

Mark Hepburn


Mr Hepburn has a degree in Economics and Finance (B.Econ. & Fin 1992 UWA) and has been a member of the Australian Institute of Company Directors since 2008. He has significant experience in institutional stockbroking, corporate transactions, capital markets funding and the management and corporate development of public companies.

He brings 28 years of substantial financial markets experience in the resources sector to Castile Resources. Mr Hepburn is also a Non-Executive Director of ASX listed lithium and gold explorer Mali Lithium after an acting role as CEO where he oversaw the company’s refinancing and corporate re-structuring. He was also on the board of ASX listed Indonesian gold developer Sihayo Resources until November 2018. ​

Jake Russell


Mr Russell is a geologist B.Sc. (Hons) MAIG with circa 20 years of experience in exploration, mining, resource development and management. He is currently the group Chief Geologist of Westgold Resources Limited and prior to its demerger from Metals X Limited, he was the Group Chief Geologist of Metals X Limited. Mr Russell brings Castile a second to none knowledge of the assets of Castile and a high degree of technical expertise in their exploration, resource development and exploitation.

Michael Poepjes


Mr Poepjes is a Mining Engineer (B Eng) a Mineral Economist (MSc [Min Econ]) and holds a Master’s Degree in Business Administration (MBA). Mr Poepjes has over twenty years of experience in the mining industry working in gold, copper and tin across Australia in both Corporate and Operational roles.

Mr Poepjes previous role was the Chief Operating Officer for Millennium Minerals. Prior to Millennium Minerals, he was the Group Mining Engineer for Metals X (which included the Westgold and Castile assets) for seven years.

Mark Savage

Geology Manager​

Mr Savage is a geologist B.Sc. (Hons) MAusIMM with more than 20 years of experience in exploration, resource development and mining. ​

Mr Savage brings a wealth of experience to Castile having worked previously for Metals X, RNI and Apex Minerals on pre-development assets.