David G. Dixon is Professor of Hydrometallurgy in the Department of Materials Engineering at The University of British Columbia. He holds degrees in Chemical Engineering (B.Sc., 1986) and Metallurgical Engineering (Ph.D., 1992) from the University of Nevada, Reno, and enjoys the status of Professional Engineer in the province of British Columbia. After a brief stint with the U.S. Bureau of Mines – Reno Research Center from 1986 to 1990, he pursued doctoral studies in the mathematical modeling of heap leaching under the direction of James L. Hendrix. He then joined the faculty of the Department of Materials Engineering at UBC in 1993. He has published widely on various aspects of mathematical modeling in hydrometallurgy, including heap leaching and bioleaching, particulate leaching kinetics in high pressure and atmospheric leaching systems, and the pressure letdown of slurries. He is the co-inventor of the GalvanoxTM process for the atmospheric leaching of copper concentrates.