Biografie
He was Assistant Professor of Geology at University of Colorado 1961-1964.
He was Assistant Professor of Geophysics at MIT 1965-1968.
He was the Chief of Geophysics at the NASA Johnson Space Centre 1970-1972.
He was a Visiting Professor of Geology at the University of Houston 1971-1973.
He was Chief of the Physics Branch of NASA 1972-1973.
He was the Chairman and Professor of the Geology Department of the University of Toronto 1972-1980.
He was the Vice-President of the University of Toronto 1980-1983.
He was the President of the University of Toronto 1983-84.
He was the President of the University of British Columbia in 1985.
He was elected as a member of the Board of Directors of the MacMillan Bloedel Ltd. (serving on the Compensation Committee) in 1986.
