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                                                                   EXHIBIT 5.1.2


                   [Letterhead of Commercial Law Group, P.C.]



                                  May 23, 2001


Chesapeake Energy Corporation
6100 North Western Avenue
Oklahoma City, Oklahoma  73118

Ladies and Gentlemen:

         We have acted as special Oklahoma counsel for Chesapeake Energy
Comporation, an Oklahoma corporation (the "Company") and certain of its
subsidiaries with respect to the preparation of the Registration Statement on
Form S-4 (the "Registration Statement") filed with the Securities and Exchange
Commission (the "Commission") in connection with the registration by the Company
under the Securities Act of 1933, as amended (the "Securities Act") of (i) the
offer and exchange by the Company (the "Exchange Offer") of $800,000,000
aggregate principal amount of its 8.125% Senior Notes due 2011 (the "Initial
Notes"), for a new series of notes bearing substantially identical terms and in
like principal amount (the "Exchange Notes") and (ii) the guarantees (the
"Guarantees") of certain subsidiaries of the Company listed in the Registration
Statement as guarantors of the Initial Notes and the Exchange Notes. The Initial
Notes and the Exchange Notes are collectively referred to herein as the "Notes".
The Initial Notes are issued, and the Exchange Notes will be issued, under an
Indenture dated as of April 6, 2001 among the Company, certain subsidiary
guarantors and United States Trust Company of New York, as Trustee as
supplemented by that certain Supplemental Indenture dated May 14, 2001 (the
"Indenture"). The Exchange Offer will be conducted on such terms and conditions
as are set forth in the Prospectus contained in the Registration Statement to
which this opinion is an exhibit.

         We have examined originals or copies, certified or otherwise identified
to our satisfaction, of (i) the Restated Certificate of Incorporation, as
amended, and Bylaws of the Company or such documents or similar organizational
documents of each of the subsidiaries of the Company who have issued Guarantees
and are organized in the State of Oklahoma, (ii) the Indenture and (iii) such
other certificates, statutes and other instruments and documents as we
considered appropriate for purposes of the opinions hereafter expressed.

         In connection with this opinion, we have assumed that the Registration
Statement, and any amendments thereto (including post-effective amendments),
will have become effective and the Exchange Notes will be issued and sold in
compliance with applicable federal and state securities laws and in the manner
described in the Registration Statement.

         Based on the foregoing, we are of the opinion that when the Exchange
Notes have been duly executed, authenticated, issued and delivered in accordance
with the provisions of the
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Indenture, such Exchange Notes will be validly issued by the Company under the
laws of the State of Oklahoma, and the Guarantees of each of the subsidiaries of
the Company that are organized in the State of Oklahoma that have issued
Guarantees of the Notes remain validly issued obligations of such subsidiaries
under the laws of the State of Oklahoma.

         We are members of the bar of the State of Oklahoma. The opinions
expressed herein are limited exclusively to the federal laws of the United
States of America and the laws of the State of Oklahoma, and we are expressing
no opinion as to the effect of the laws of any other jurisdiction, domestic or
foreign. In this regard, since the Indenture purports to be governed by New York
law, we express no opinion as to the enforceability against the Company and the
subsidiary guarantors of the Indenture and the Exchange Notes, and related
Guarantees, in accordance with their respective terms, and have relied
exclusively in this regard on the opinion of Vinson & Elkins L.L.P. filed as an
exhibit to the Registration Statement. We also authorize Vinson & Elkins L.L.P.
to rely on this opinion in delivering its opinion.

         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement. By giving such consent, we do not admit that we are
within the category of persons whose consent is required under Section 7 of the
Securities Act or the rules and regulations of the Commission issued thereunder.

                                           Very truly yours,


                                           /s/ COMMERCIAL LAW GROUP, P.C.
                                               --------------------------------
                                               Commercial Law Group, P.C.