Dr Marston has held senior positions with the Geological Survey of Western Australia and several mineral resource consulting groups. He compiled landmark mineral resource bulletins on copper and nickel mineralisation in Western Australia when at the Survey. Dr Marston played a key role in the discovery, development and management of the multi-million ounce Damang Gold Mine in Ghana, West Africa. Dr
Marston was previously a director of Ranger Minerals Ltd (now merged with Perilya Ltd).