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 second quarter conference call with securities analysts on Monday, July 23 at 1 p.m. EDST on the USX Corporation web site. The call will cover second 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 Clarence P. Cazalot, Jr., president-Marathon Oil and John T. Mills, senior vice president, Finance & Administration. On the call from Marathon Ashland Petroleum LLC (MAP) will be John P. Surma, 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 Services" button.

Replays of the conference call will be available on the USX web site until July 30.

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/comp/929150.html; or at http://www.prnewswire.com/comp/133204.html.

MAKE YOUR OPINION COUNT - Click Here
http://tbutton.prnewswire.com/prn/11690X41925578

SOURCE: USX-Marathon Group

Contact: William E. Keslar or Don H. Herring of USX-Marathon Group,
412-433-6870

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

Company News On-Call: http://www.prnewswire.com/comp/929150.html or
http://www.prnewswire.com/comp/133204.html