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Filed Pursuant to Rule 424(b)3
Registration No's. 333-23291
333-2391-01
SUPPLEMENT
TO
PROSPECTUS DATED MARCH 27, 1997
USX Corporation
Offer to Exchange
6.75% Convertible Quarterly Income preferred Securities
(Convertible QUIPS(SM)* Securities)
(Initial Liquidation Amount $50 per Security)
of
USX Capital Trust I
Guaranteed by USX Corporation to the Extent Set Forth Herein
for
6.50% Cumulative Convertible Preferred Stock of USX Corporation
On April 29, 1997, USX Corporation announced that the Exchange
Offer would be extended to 12:00 midnight, New York City time, on May 12, 1997.
On May 13, 1997, USX announced that the Exchange Offer would
be extended to 12:00 midnight, New York City time, on May 15, 1997.
On proposed stock symbol for the 6.75% Trust Convertible Preferred
Securities on the New York Stock Exchange has been changed to X PrZ.
May 13, 1997
