EXHIBIT 10 ---------- NORWEST CORPORATION 135 East South Temple, 12th Floor Salt Lake City, Utah 84111 USA Tel (801) 539-0044 USA (800) 266-6351 Fax (801) 539-0055 Gary M. Stubblefield Vice President May 3, 2004 File No. 2580 Sean Bovingdon Controller Western Oil Sands, Inc. Suite 2400 Ernst & Young Tower 440 Second Avenue S.W. Calgary, Alberta T2P 5E9 Canada SUBJECT: CONSENT LETTER Dear Sean: We hereby consent to references to our name and to the Reports in the Company's Annual Report on Form 40-F to be filed with the United States Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended. We also confirm that we have read the Annual Information Form and that we have no reason to believe that there are any misrepresentations in the information contained in it that are derived from the Reports or that are within our knowledge as a result of the services we performed in connection with the Reports. Sincerely, NORWEST CORPORATION (Formerly NorWest Mine Services, Inc.) /s/ Gary M. Stubblefield - ------------------------ Gary M. Stubblefield Vice President