EXHIBIT 16 December 1, 2000 Office of the Chief Accountant Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 Dear Sir /Madam, We have read the two paragraphs of Item 4 included in the Form 8-K dated December 1, 2000 of Key Production Company, Inc. filed with the Securities and Exchange Commission and are in agreement with the statements contained therein. Very truly yours, Arthur Andersen LLP cc: Mr. Paul Korus, Vice President and Chief Financial Officer, Key Production Company, Inc.