Exhibit 5.3

                    [MCINNES COOPER & ROBERTSON LETTERHEAD]

                                                                August 25, 1998

Union Pacific Resources Group Inc.
801 Cherry Street
Fort Worth, Texas 76102

         RE:      Union Pacific Resources Group Inc.

                  UPRG Capital Trust I

                  UPRG Capital Trust II

                  UPRG Capital Trust III

                  Union Pacific Resources Inc.

                  UPR Capital Company

                  Registration Statement on Form S-3

Dear Sirs:

         We are counsel for UPR Capital Company., a Novia Scotia unlimited
liability company (the "Company"), and are rendering this opinion in
connection with the Registration Statement on Form S-3 (the "Registration
Statement") of the Company, Union Pacific Resources Group Inc., a Utah
corporation and beneficial owner of all of the equity of the Company ("UPRG"),
Union Pacific Resources Inc., an Alberta corporation and affiliate of the
Company ("UPRI" and together with the Company, the "Subsidiary Issuers") and
UPRG Capital Trust I, UPRG Capital Trust II and UPRG Capital Trust III, each a
Delaware statutory business trust (collectively, the "UPRG Trusts") being
filed today with the Securities and Exchange Commission under the Securities
Act of 1933, as amended (the "Securities Act"), with respect to the following
securities of the Company; (i) non-convertible unsecured senior debt
securities (the "Senior Debt Securities")and (ii) non-convertible unsecured
subordinated debt securities (the "Subordinated Debt Securities", together
with the Senior Debt Securities, the "Debt Securities").

         We have examined (i) the form of the Indenture (the "Senior
Indenture") between UPRG, the Subsidiary Issuers and The Bank of New York, as
trustee (the "Senior Trustee"), pursuant to which the Senior Debt Securities
will be issued, and (ii) we have examined such other documents and made such
other investigations as we have deemed necessary or advisable for purposes of
this opinion. In such examinations, we have assumed: (i) the genuineness of all
signatures; (ii) the authenticity of all documents submitted to us as originals;
(iii) the conformity to authentic originals of all documents submitted to us as
certified, notarial or true copies, reproductions or facsimile copies; and (iv)
the veracity of all information contained in such documents. We have assumed,
for the purposes of the opinion expressed herein, that all agreements and other
documents have been duly authorized, executed and delivered by all of the
parties thereto other than the Company.

         This opinion is confined to the laws of the Province of Nova Scotia and
the federal laws of Canada applicable therein.

         Based thereon, I am of the opinion that:

         1.       The Company is an unlimited liability company duly
                  incorporated and validly existing under the laws of the
                  Province of Nova Scotia.

         2.       The execution and delivery of the Senior Indenture by the
                  Company and the issuance and sale of Senior Debt Securities
                  have been validly authorized by all necessary corporate
                  action by the Company.

         3.       A court of competent jurisdiction in the Province of Nova
                  Scotia (a "Canadian Court") would give effect to the choice of
                  the law of the State of New York ("New York law") as the
                  proper law governing the Senior Debt Securities, provided that
                  such choice of law is bona fide (in the sense that it was not
                  made with a view to avoiding the consequences of the laws of
                  any other jurisdiction), and provided that such choice of law
                  is not contrary to public policy, as that term is understood
                  under the laws of the Province of Nova Scotia and the laws of
                  Canada applicable therein. In our opinion, there are no
                  reasons under the laws of the Province of Nova Scotia or the
                  laws of Canada applicable therein for avoiding the choice of
                  New York law to govern the Senior Debt Securities.


         4.       In an action on a final and conclusive judgment in personam
                  of any federal or state court in the State of New York (a "New
                  York Court") that is not impeachable as void or voidable under
                  New York law, a Canadian Court would not refuse to recognize
                  the jurisdiction of the court rendering such judgment on that
                  basis of process being served on Union Pacific Resources Group
                  Inc. as the agent to receive service of process in the United
                  States of America appointed by the Company under the Senior
                  Indenture.

         5.       If the Senior Debt Securities are sought to be enforced in the
                  Province of Nova Scotia in accordance with the laws applicable
                  thereto as chosen by the parties, namely New York law, a
                  Canadian Court would, subject to paragraph 3 above and to the
                  extent specifically pleaded and proved as a fact by expert
                  evidence, recognize the choice of New York law and, upon
                  appropriate evidence as to such law being adduced, apply such
                  law to all issues that under the conflict of laws rules of the
                  Province of Nova Scotia are to be determined in accordance
                  with the proper or general law of a contract, provided that
                  none of the provisions of the Senior Debt Securities, or of
                  New York law, are contrary to public policy as that term is
                  understood under the laws of the Province of Nova Scotia and
                  the laws of Canada applicable therein; provided, however,
                  that, in matters of procedure or to which the laws in force
                  in Nova Scotia the application of the laws in force in Nova
                  Scotia is imperative, the laws of the Province of Nova Scotia 
                  will be applied, a Canadian Court will not apply those New 
                  York laws which the Canadian Court characterises as
                  procedural, revenue, expropriatory, penal or similar laws, 
                  and a Canadian Court will retain discretion to decline to 
                  hear such action if it is contrary to public policy, as that 
                  term is applied by a Canadian Court, for it to do so, or if 
                  it is not the proper forum to hear such an action, or if 
                  concurrent proceedings are being brought elsewhere. In our 
                  opinion, there are no reasons under the laws of the Province 
                  of Nova Scotia or the laws of Canada applicable therein and 
                  no reasons, to our knowledge with respect to the application 
                  of New York law by a Canadian court, for avoiding enforcement 
                  of the Senior Debt Securities, based on public policy, as 
                  that term is understood under the laws of the province of 
                  Nova Scotia and the federal laws of Canada applicable therein.

         6.       The laws of the Province of Nova Scotia and the laws of Canada
                  applicable therein permit an action to be brought in a
                  Canadian Court on a final and conclusive judgment in personam
                  for a fixed sum of money of a New York Court that is
                  subsisting and unsatisfied respecting the enforcement of the
                  Senior Debt Securities that is not impeachable as void or
                  voidable under New York law for a sum certain if: (A) such
                  judgment was  not obtained by fraud or in a manner contrary
                  to natural justice and the enforcement thereof would not be
                  inconsistent with public policy as such term is applied by a
                  Canadian Court, or contrary to any order made by the Attorney
                  General of Canada under the Foreign Extraterritorial Measures
                  Act (Canada); (B) the enforcement of such judgment does not
                  constitute, directly or indirectly, the enforcement of foreign
                  revenue, expropriatory or penal laws or other laws of a public
                  nature; (C) the action to enforce such judgment is commenced
                  within six years of the date of such judgment, except that
                  under the Currency Act (Canada), a Canadian Court may only
                  give judgment in Canadian dollars; (D) the court rendering
                  such judgment had jurisdiction over the judgement debtor, as
                  recognized by the courts of the Province of Nova Scotia (in
                  our opinion, submission under the provisions of the Senior
                  Indenture to the jurisdiction of a New York Court will be
                  sufficient for this purpose); and (E) no new admissible
                  evidence relevant to the action is discovered prior to
                  rendering of judgment by the court in the Province of Nova
                  Scotia. In our opinion, there are no reasons under the laws of
                  the Province of Nova Scotia or the laws of Canada applicable
                  therein for avoiding recognition of judgments of a New York
                  Court under the Senior Debt Securities based on public policy,
                  as that term is understood under the laws of the Province of
                  Nova Scotia and the federal laws of Canada applicable therein.


         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement. We also consent to the use of our name under the
caption "Legal Opinions" in the Prospectus contained in the Registration
Statement.

                                         Very truly yours,


                                         /s/ McInnes Cooper & Robertson


                                         McInnes Cooper & Robertson