Department Geology Advisory

Matt Walker

Matt Walker, Principal Consultant with Snowden Optiro’s Geology Advisory, is a geologist with more than 15 years of experience through the mine cycle chain, covering production, resource definition and resource estimation across a variety of projects, commodities, and continents. Matt…

Mark Drabble

Mark Drabble is a geologist with more than 32 years’ experience in due diligence studies, Mineral Resource audits, underground and open pit production, resource development, resource estimation, consulting and geological management at operational and corporate levels. Mark has extensive experience…

Kahan Cervoj

Kahan Cervoj is Snowden Optiro’s Executive Consultant in Geology Advisory. With more than 30 years of experience in the mining industry, Kahan has worked across exploration, resource development, and mine geology, with a strong emphasis on getting the fundamentals right…

Jan Graham

Jan Graham is a Resource Geologist with over 18 years of experience in the mining industry, bringing strong technical expertise across a range of commodities and deposit types. As a consultant, she has worked extensively with mining software including Datamine,…

Ian Glacken

Ian Glacken is an Executive Consultant with Snowden Optiro’s Geology Advisory group. An experienced geologist with postgraduate qualifications in geostatistics, mining geology, and computing, Ian has more than 38 years of global mining industry experience. Ian began his career with…

Dr Gregory Zhang

Dr Gregory Zhang – Senior Consultant, Geology & Resource Estimation Dr Gregory (Greg) Zhang is a highly experienced geologist and resource estimation specialist with more than 14 years’ experience across mining, exploration, and academic research. He has contributed to over…

Paul Blackney

Paul is a geologist with more than 37 years of technical and operational experience. He has worked as a consultant in resource geology for over 30 years. Paul’s skills include resource evaluation, technical audits and reviews, geostatistics, reconciliation, grade control,…