EXHIBIT 5.1


              Opinion Regarding Legality by Snell & Wilmer, L.L.P.
                     [Letterhead of Snell & Wilmer, L.L.P.]


October 29, 1999

Securities and Exchange Commission
Judiciary Plaza
450 Fifth Street, N.W.
Washington, D.C.  20549

      Re:  Mason Oil Company, Inc.
           Form S-8 Registration Statement
           Executive Stock Plan

Ladies and Gentlemen:

     This firm has acted as counsel to Mason Oil Company, Inc. (the "Company")
in connection with the preparation and filing of its registration statement on
Form S-8 under the Securities Act of 1933, as amended, covering the issuance of
an aggregate of 4,600,000 shares of common stock, $0.001 par value per share of
the Company (the "Common Stock"), pursuant to the Executive Stock Plan (the
"Plan").

     We have examined the Company's Articles of Incorporation and bylaws and
the record of its corporate proceedings with respect to the registration
statement and have made such other investigation as we have deemed necessary in
order to express the following opinion.

     Based on the foregoing, we are of the opinion that:

     1. The Company has been duly incorporated and is validly existing and in
        good standing as a corporation under the laws of the State of Utah.

     2. The Common Stock, when issued as contemplated by the Plan and the
        registration statement will be legally issued, fully paid and
        nonassessable.

     We hereby consent to all references to this firm in the registration
statement and all amendments to the registration statement. We further consent
to the use of this opinion as an exhibit to the registration statement.

                               Very truly yours,

                            /s/Snell & Wilmer, L.L.P.
                               Snell & Wilmer, L.L.P.