HighMount Exploration & Production LLC, and Dominion Oklahoma Texas Exploration & Production, Inc. v. Harrison Interests, LTD., Dan J. Harrison III, and BFH Mining LTD.

OPINION

Kem Thompson Frost, Chief Justice

At issue in this appeal is the interpretation of an agreement governing the payment of royalties by an oil and gas producer. The royalty owners filed suit asserting that the producer was underpaying them because (1) the royalty agreement entitled the owners to royalties the producer was not paying and (2) the producer was improperly deducting marketing costs in calculating the royalties owed to: the royalty owners. Both parties filed summary-judgment motions on both issues. The trial court granted the royalty owners’ summary-judgment motions. We affirm.

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