USX Corporation             John A. Hammmerschmidt
Law Department              Assistant General Counsel
600 Grant Street            Corporate & Assistant Secretary
Pittsburgh, PA 15219-4776
412 433 2922
Fax: 412 433 2015


                                                                     EXHIBIT 5.2

March 26, 1997

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USX Corporation
600 Grant Street
Pittsburgh, Pennsylvania 15219-4776

USX Capital Trust I
101 Barclay Street
New York, New York 10286

Dear Sir or Madam:

I am Assistant General Counsel and Assistant Secretary of USX Corporation, a 
Delaware Corporation (the "Company"). I, or attorneys acting under my 
supervision, have acted as counsel to the Company, and USX Capital Trust I, a 
Delaware statutory business trust (the "Trust" and, together with the Company, 
the "Registrants") in connection with the preparation of the Registration 
Statement on Form S-4 (File Nos. 333-23291 and 333-23291-01), as amended by 
Pre-Effective Amendment No. 1 thereto (as amended, the "Registration 
Statement"), filed jointly by the Registrants with the Securities and Exchange 
Commission (the "SEC").

The Registration Statement relates to the offer and sale (the "Exchange Offer") 
by the Company of 6.75% Convertible Quarterly Income Preferred Securities (the 
"Trust Convertible Preferred Securities") of the Trust in exchange for 
outstanding shares of the 6.50% Cumulative Convertible Preferred Stock (the 
"6.50% Convertible Preferred Stock") of the Company. Certain capitalized terms 
used herein and not otherwise defined have the meanings ascribed to them in the
Registration Statement.

I, or attorneys under my supervision, have examined and are familiar with 
originals or copies of such documents, corporate records, and other instruments 
as we have deemed necessary or appropriate in connection with this opinion, 
including (1) the Registration Statement, (2) the Amended and Restated 
Declaration of Trust of the Trust, in the form filed as an exhibit to the 
Registration Statement, pursuant to which the Trust Convertible Preferred 
Securities will be issued, (3) the Multiple Series Indenture (the "Base 
Indenture") and First Supplemental Indenture (the "Supplemental Indenture" and, 
together with the Base Indenture, the "Indenture") between the Company and The 
Bank of New York, as trustee (the "Indenture Trustee"), in the form filed as an 
exhibit to the Registration Statement, under which the Company will issue its 
6.75% Convertible Junior Subordinated Debentures (the "Convertible Debentures") 
to the Trust in exchange for the Trust Convertible Preferred Securities and all 
of the common securities of the Trust (the Trust Convertible Preferred 
Securities and the common securities together, the "Trust Securities"), (4) the 
Guarantee Agreement (the "Guarantee Agreement") between the Company and The Bank
of New York, as trustee (the "Guarantee Trustee"), in the form filed as an 
exhibit to the Registration Statement, pursuant to which the Company will 
guarantee certain payment obligations of the Trust to the extent set forth 
therein,


Marathon Group
U.S. Steel Group
Delhi Group



USX Corporation
USX Capital Trust I
Page 2
March 26, 1997


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(5) the Certificate of Trust of the Trust as filed in the Office of the 
Secretary of State of the State of Delaware on March 13, 1997 (the 
"Certificate"), (6) the Declaration of Trust of the Trust dated as of March 13, 
1997 as executed by the trustees of the Trust (the "Trustees"), (7) the Dealer 
Manager Agreement (the "Dealer Manager Agreement") among the Company, the Trust,
Goldman, Sachs & Co., and Merrill Lynch & Co. in the form filed as an exhibit to
the Registration Statement, (8) the Restated Certificate of Incorporation of
the Company, as amended to the date hereof, (9) the Bylaws of the Company, as
amended to the date hereof, and (10) resolutions adopted to the date hereby by 
the Board of Directors of the Company relating to, among other things, the 
Registration Statement, the Exchange Offer, and the Agreement.

I am a member of the Bar of the Commonwealth of Pennsylvania. This opinion is 
limited to the laws of the Commonwealth of Pennsylvania, the General Corporation
Law of the State of Delaware, and the laws of the United States. I do not 
express any opinion as to the laws of any other jurisdiction or as to any other 
laws of the State of Delaware. The Indenture, the Debentures, and Guarantee 
Agreement each include a provision choosing the law of the State of New York as
the governing law. As to certain questions pertaining to New York law, we have 
assumed that the law of the Commonwealth of Pennsylvania is identical to the law
of the State of New York insofar as New York law would be applicable to the 
opinions expressed in paragraphs 1 and 2 below.

Based upon the foregoing and subject to the limitations expressed below, I am
of the opinion that:

     1.  The Convertible Debentures, when executed, authenticated, and delivered
to the Trust will be duly executed and issued and will constitute the valid and 
legally binding obligations of the Company, enforceable against the Company in 
accordance with its terms.

     2.  The Guarantee Agreement, when executed and delivered to the Guarantee 
Trustee as contemplated by the Registration Statement, will be duly executed and
issued and will constitute the valid and legally binding obligation of the 
Company, enforceable against the Company in accordance with its terms.

    3.  The shares of USX-U.S. Steel Group Common Stock, par value $1.00 per 
share (the "Common Stock") of the Company into which the Trust Convertible 
Preferred Securities and the Convertible Debentures are convertible will, upon 
conversion and issuance of such shares pursuant to the Amended Declaration, in 
the case of conversion of Trust Convertible Preferred Securities, or the 
Indenture, in the case of conversion of the Convertible Debentures, be validly 
issued, fully paid, and nonassessable shares of Common Stock of the Company.

The opinions expressed in paragraphs 1 and 2 above are subject to the effect of 
bankruptcy, insolvency, reorganization, moratorium, fraudulent conveyance, and 
other

 
            USX Corporation
            USX Capital Trust I
            Page 3
            March 26, 1997

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USX]
            similar laws relating to or affecting creditor's rights generally, 
            and to general principles of equity (regardless of whether 
            enforceability is considered in a proceeding at law or in equity).

            I consent to the filing of this opinion as an exhibit to the 
            Registration Statement and to the reference to me under the caption
            "Legal Matters" in the prospectus forming a part of the Registration
            Statement.

            Very truly yours,

            /s/ John A. Hammerschmidt

            John A. Hammerschmidt