Marathon Group Conference Call Available on Company Web Site

USX-Marathon Group (NYSE: MRO) announced that interested shareholders, investors and others may listen to the company's third quarter conference call with securities analysts on Monday, October 22 at 1 p.m. EDT on the USX Corporation web site. The call will cover third quarter financial results and may include forward-looking information.

Kenneth L. Matheny, vice president-Investor Relations for USX Corporation, will host the call. Also participating in the call from Marathon Oil will be Philip G. Behrman, senior vice president, Worldwide Exploration; Steve B. Hinchman, senior vice president, Production Operations; and John T. Mills, senior vice president, Finance & Administration. On the call from Marathon Ashland Petroleum LLC (MAP) will be Gary R. Heminger, president and Garry L. Peiffer, senior vice president, Finance and Information Technology.

Interested parties can visit the web site at http://www.usx.com/ and click on the "Marathon Group" button, then the "Investor/Shareholder" button.

Replays of the conference call will be available on the USX web site until October 29.

Financial information, including earnings releases and other investor-related material, is also available at the site.

Visit USX Corporation's web site at http://www.usx.com/. USX Corporation press releases are available through Company News On-Call at http://www.prnewswire.com/gh/cnoc/comp/929150.html; or at http://www.prnewswire.com/gh/cnoc/comp/133204.html.

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SOURCE: USX-Marathon Group

Contact: William E. Keslar or Don H. Herring, both of USX,
+1-412-433-6870

Website: http://www.usx.com/

Company News On-Call: http://www.prnewswire.com/gh/cnoc/comp/929150.html