Ian Glacken FAusIMM(CP), FAIG, MIMMM, CEng, MSc, BSc(Hons), DIC is a geologist and geostatistician who has been active internationally in the mining industry for 35 years. Ian has studied in the UK, USA and in Australia, and after graduation worked for Western Mining (WMC Resources) for 16 years worldwide as an exploration geologist, mine geologist, mine geology manager and senior resource geologist in nickel, gold, copper and uranium. Ian was the General Manager Geology and Training at Snowden for 10 years and since 2008 has been the Director of Geology at Optiro, where he was a founder. At Optiro, Ian specialises in resource auditing for a range of global majors, reconciliation, resource estimation, QAQC, sampling and geostatistical studies, and presents a variety of training courses worldwide.