Corporate officers

• J. P. Good - Chairman of the Board (1)

• C. H. Chadwick - Senior Vice President (1)

• M. G. Oxhard - Senior Vice President (1)

• L. D. DuCharme - Vice President - Research and Engineering (1)

• D.G. Wascom - Vice President - Operational Excellence, Safety, Security, Health & Environment

• D. G. Holton - Vice President - Supply and Transportation (1)

• H. H. Ross - Vice President - General Counsel (1)

• B. F. Hoss - Vice President - Corporate Strategic Planning (1)

• J. M. Spellings, Jr. - Vice President , Treasurer and General Tax Counsel (1)

(1) Required to file reports under Section 16 of the Securities Exchange Act of 1934.