D.Eng. (2006) & PhD (1991) Stellenbosch University (South Africa).
Dr. habil. (1995) RWTH Aachen (Germany).
Outotec Director - Technology Management at Outotec Oyj Finland ( and previously Chief
Executive Technologist Outotec-Ausmelt since 2006 (Outotec 3rd Globally most Sustainable Corporation announced in Davos 22nd January 2014 during World Economic Forum
Mintek (manager furnace control group), South Africa 1994-1996.
Anglo American Corporation (process metallurgist), South Africa 1984-1985.
Adjunct Professor at Aalto University (Finland) since 2012.
Guest Professor at the Central South University in China since 2012.
Professor & Professorial Fellow at the University of Melbourne (Australia) since 2005.
Professor at TU Delft (Netherlands) as well as Emeritus 1996-2012.
Adjunct Professor at University of Stellenbosch (1999-2007).
Supervised (and co-supervised) 22 PhD and 106 Master students.
Over 390 publications in books, encyclopaedias, journals, and conference proceedings and is the main author of the book “Metrics of Material and Metal Ecology” (Elsevier 2005). Co-Editor of the book “Handbook of Recycling”
Subject editor and serve on the Editorial Advisory Boards of 4 academic journals: Minerals Engineering(Elsevier), Waste & Biomass Valorization (Springer), Process Safety and Environmental Protection IChemE (Elsevier), Erzmetall (GDMB).
Lead author of the United Nations Environmental Protection (UNEP) Report “Metal Recycling: Opportunities Limits Infrastructure”