Department Training

Rowdy Bristol

Rowdy is a Principal Consultant with our Geology Division. He has deep familiarity with linear and non-linear resource estimation techniques, such as ordinary kriging, indicator kriging, inverse distance, conditional simulation, uniform and local uniform conditioning.  Rowdy, has more than 30…

Gilberto Takahashi

Gilberto is a mining engineer with extensive experience in the application of new technologies and software in the mining area. He graduated in Mining Engineering from Escola Politécnica da Universidade de São Paulo in 1991. He has experience in geological…

Oscar Rondon

Oscar Rondon, Principal Geostatistian, Snowden Optiro

Oscar Rondon, is a Principal Geostatistician with the Supervisor team. Oscar is a skilled geostatistician and researcher with more than 19 years of combined experience in the Oil & Gas and Mining & Metals industries with a proven track of…

Susan Havlin

Susan Havlin, Principal Consultant, Geology Advisory, Snowden Optiro

Susan is a Principal Consultant in our Geology Advisory division. She has more than 22 years of experience in exploration, mine and resource geology. She has experience in both surface and underground mines.  She has geological expertise in a variety…

Mark Drabble

Mark Drabble, Snowden Optiro’s Executive Consultant from Executive Advisory is a geologist with more than 29 years of experience in due diligence studies and Mineral Resource audits, underground and open pit production, resource development, resource estimation, consulting and geological management…

Kahan Cervoj

Kahan Cervoj, Snowde Optiro’s Executive Consultant from Executive Advisory Department has worked as an exploration, resource development, mine and resource geologist since 1990, with a focus on doing the fundamentals and gaining a working understanding of a deposit’s geology. He…

Ian Glacken

Ian Glacken, Executive Consultant from Geology Advisory

Ian Glacken, Executive Consultant from Geology Advisory department in Snowden Optiro is a geologist with postgraduate qualifications in geostatistics, mining geology and computing who has more than 36 years of worldwide experience in the mining industry. Following 16 years working…

Gregory Zhang

Greg is a geologist with more than 10 years’ experience in exploration, academic research and resource estimation in gold, base metal tungsten and molybdenite. Particular gold commodity experience has included visualization and three-dimensional modelling of mineralisation systems, geostatic analysis, resource…