DENVER, May 8 /PRNewswire-FirstCall/ -- Western Gas Resources, Inc. (NYSE: WGR) will release its first quarter 2006 earnings results at 7:00 a.m. Eastern time on Tuesday, May 9, 2006. Western invites you to listen to its first quarter 2006 results conference call via telephone or live Webcast on Tuesday, May 9, 2006 at 11:30 a.m. Eastern, 9:30 a.m. Mountain time. To listen via telephone, dial (719) 457-2659 five to ten minutes before the start of the call. A replay will be available through midnight, May 15, 2006 by dialing (719) 457-0820, pass code 6342493. The live conference call may also be accessed on the Internet by logging onto Western's Web site at http://www.westerngas.com/. Select Investor Relations, then the Webcasts and Presentations option on the menu. Log on at least ten minutes prior to the start of the call to register, download and install any necessary audio software. An audio replay of the call will also be available on the Web site through May 31, 2006. Company Description. Western is an independent natural gas explorer, producer, gatherer, processor, transporter and energy marketer. The Company's producing properties are located primarily in Wyoming, including the developing Powder River Basin coal bed methane play, where Western is a leading acreage holder and producer, and the rapidly growing Pinedale Anticline. The Company also owns and operates natural gas gathering, processing and treating facilities in major gas-producing basins in the Rocky Mountain, Mid-Continent and West Texas regions of the United States. For additional Company information, visit Western's web site at http://www.westerngas.com/. DATASOURCE: Western Gas Resources, Inc. CONTACT: Investors, Ron Wirth, Director of Investor Relations of Western Gas Resources, Inc., +1-800-933-5603, Web site: http://www.westerngas.com/

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