Chairman, Christiania Bank, Oslo (1984-1990); Team Leader, Nordic Advisory Team, Beira Corridor Authority, Mozambique (1986- 1987); Minister of Petroleum and Energy, Norway (1981-1983); Advisor, Industrial Bank of Kuwait (1975-1977); Chairman and Chief Executive, Norwegian Water Resources and Electricity Board (1968-1975); Secretary General, Norwegian Ministry of Industry (1967-1968); Advisor, Kuwait Fund for Arab Economic Development (1963-1965); Professor of Hydroelectric Engineering, Norwegian Inst. of Technology (1961-1963).