Principal Consultant – Studies
Graham Rigo
Graham has over 18 years’ experience in mineral processing and hydrometallurgical projects, ranging from study management, supervisory roles, and on-site operations. He is experienced in high pressure acid leach (HPAL), sulphuric acid production, water treatment, hydrogen sulphide production, power systems, thickeners and CCD circuits, sulphide precipitation, POX leaching, solvent extraction, hydrogen reduction, and ammonium sulphate crystallisation, specialising in nickel and cobalt processing.
Graham has worked extensively in Australia and Vietnam, supplemented with engineering and study management experience on projects in Africa, Australia, Latin America, and South East Asia.
Prior to MineScope, his most recent role was at executive management level, responsible for delivery of studies, specifically for the flagship Ta Khoa project for Blackstone Minerals & technical lead for corporate business development, due-diligence for new ventures / JV.
Graham joined MineScope in 2025.
Graham has joined MineScope as Principal Consultant – Studies, and will be focussing on expanding his study management experience and contributing to MineScope’s growth. He has a broad range of technical experience including study management and process engineering, specifically in areas of HPAL, POX, SX, sulphuric acid production, water treatment, hydrogen sulphide treatment, power systems, thickeners, CCD circuits, & sulphide precipitation.
Based
Perth, Australia
Commodites
Ni, Co, Cu, Ag, Au