EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in this Registration Statement on Form S-3 of 91ÖÆƬ³§ Corporation of our reports dated February 7, 2001 relating to the consolidated financial statements and financial statement schedule of USX Corporation and the financial statements of the U.S. Steel Group, which appear in USX Corporation's Annual Report on Form 10-K/A for the year ended December 31, 2000. We also consent to the incorporation by reference of our report dated February 15, 2002, relating to the financial statements of 91ÖÆƬ³§ Corporation, which appears in the Current Report on Form 8-K dated March 1, 2002. We also consent to the references to us under the heading "Experts" in such Registration Statement. /s/ PricewaterhouseCoopers LLP PRICEWATERHOUSECOOPERS LLP Pittsburgh, Pennsylvania March 12, 2002