John Baldwin Kelian - A Precursor to the Carbonate-base metal gold model. Keith Bettles Petrological studies by Terry Leach at the North CarlinTrend, Nevada. Kaylene Camuti Clay Minerals in Alteration Systems. Anthony Coote The Application of Petrology to Mineral Exploration: as inspired by Terry Leach. Greg Corbett Influence of Magmatic Arc Geothermal Systems on Porphyry-Epithermal Au-Cu-Ag Exploration Models. Jason Cunliffe Polymetallic Silver-Gold Deposits of Central and South America Mike Erceg Terry Leach: Contribution to the understanding of the Hydrothermal Ore-forming Processes of the Wafi High- sulphidation Epithermal Gold Deposit and his role in the Discovery of the Wafi Porphyry Copper Deposit. Peter Grieve Gold and Terry Leach in New Zealand – turning Concepts into Targets. David Heberlein Spatial and Temporal Zonation at the El Indio Cu-Au-Ag deposit, Chile: Evidence for an evolving High Sulphidation Epithermal System. Roy Kidd Papua New Guinea – the Application of Petrology to Geological Model Development. Terry Leach and Greg Corbett Fluid Mixing as a Mechanism for Bonanza Grade Epithermal Gold Formation. Trevor Neale Adding to the Knowledge – Ideas from PNG. Dale Simms The Gosowong Goldfield; 5 Moz and Still Growing.