Graduated from Iowa State University in 1959, Pennsylvania State University in 1961, and St. Mary’s College of California in 1977. MS in Geology, Master of Business Administration.
1989–1999: President of Chevron Overseas Petroleum, member of the Board of Directors of Chevron Corporation.
2000–2002: Vice-Chairman of Chevron, Chevron-Texaco Corporation. 2001-Present: Board member of PHI, Inc. 2005-2008: Board member of SBM Offshore NV.
2006: Recipient of a public non-governmental medal "For the Development of the Oil and Gas Complex of Russia" and the "Director of the Year 2006" National Award, Russia, in the "Independent Director of the Year" nomination category, sponsored by the Independent Directors Association (IDA) and PricewaterhouseCoopers.
2010–2013: Board member of Eurasia Drilling Company.
Since June 2014: Independent non-executive member of the Board of Directors of PetroChina Company Limited, member of the Human Resources and Compensation Committee.
Elected to the LUKOIL Board of Directors in 2002-2009 and since 2011.