EX-23 7 ex23_4nonuplan.txt EX. 23.4 - CONSENT OF ENGINEER RE NAT. FUEL EXP. EXHIBIT 23.4 RALPH E. DAVIS ASSOCIATES, INC. Consultants-Petroleum and Natural Gas 1717 St. James Place-Suite 460 Houston, Texas 77056 (713) 622-8955 CONSENT OF ENGINEER ------------------- We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of National Fuel Gas Company of our audit report for National Fuel Exploration Corp. dated October 17, 2002 and to the reference to our estimate dated October 1, 2002, which appear in and are incorporated by reference in National Fuel Gas Company's Annual Report on Form 10-K for the year ended September 30, 2002. RALPH E. DAVIS ASSOCIATES, INC. /s/ Allen C. Barron --------------------------------------- Allen C. Barron, P.E. President Houston, Texas December 22, 2002