January 1968-September 1969
Visiting Senior Research Fellow, Dept. of Metallurgy and Science of Materials, University of Oxford, Oxford, England
October 1969-August 1978
Research Officer, Materials Science Branch, Chalk River Nuclear Laboratories, Atomic Energy of Canada, Ltd., Chalk River, Ontario, Canada
September 1978-June 1984
Associate Professor of Engineering, Thayer School of Engineering, Dartmouth College, Hanover, NH
July 1983-
Founder and Director, Ice Research Laboratory, Thayer School of Engineering, Dartmouth College, Hanover, NH
July 1984-
Professor of Engineering, Thayer School of Engineering, Dartmouth College, Hanover, NH
September 1988-December 1988
Visiting Research Fellow, Corporate Research and Development Center, General Electric Company, Schenectady, NY
January 1989-May 1989
Visiting Professor, University of Grenoble (Joseph Fourier), St. Martin d'Hères, France
January 1999-May 1999
Visiting Scientist, CNRS, Laboratoire de Glaciologie et Geophysique de l'Environnement, Grenoble, France
April 2007-May 2007
Visiting Scientist, CNRS, Laboratoire de Glaciologie et Geophysique de l'Environnement, Grenoble, France
October 2013-April 2014
Visiting Professor, Norwegian University of Science and Technology (NTNU), Trondheim
2007-2019
Chairman, Department of Engineering Sciences, Dartmouth College
2007-2019
Director, B.E. Program, Thayer School of Engineering, Dartmouth College
1984-Present
Director, Ice Research Laboratory, Thayer School of Engineering, Dartmouth College