I am a graduate metallurgist working as a process engineer, now with some 50 years experience. My main fields have been hydrometallurgy (including PGM refining) and mineral processing. Ores and metals covered are copper, gold, silver, iron ores, rare earths and thorium, non-metallics include graphite, emeralds, vermiculite. Other associated experience has included hazop studies as a facilitator, familiarity with NI 43101 reports, technical audits and due diligence studies.