University Distinguished Professor of Geosciences, Virginia Tech

Professor of Applied Geology, SUERC

Curator

Professor of Geosciencs / Director Lowell IMR, University of Arizona

Professor of Geology, University of British Columbia

President and Chief Geologist, Lightfoot Geoscience Inc.

Principal Research Fellow, Earth and Environment, University of Leeds

Professor of Earth Sciences, University of Waterloo

Professor of Economic Geology, Department of Geology and Geological Engineering …

Research Scientist, Geological Survey of Canada (retired)