TRANS-WESTERN PETROLEUM, INC., a Colorado corporation, Plaintiff-Counter-Defendant-Appellee/Cross-Appellant, v. UNITED STATES GYPSUM CO., an Illinois corporation, Defendant, and Chevron U.S.A., Inc., a Pennsylvania corporation; Wolverine Gas and Oil Corp., a Michigan corporation; Winn Exploration Co., Inc., a Texas corporation; Page 989 Billingsley Interests, Ltd., a Texas limited partnership, Defendants-Counter-Claimants-Appellants/Cross-Appellees. Nos. 08-4120, 08-4121.United States Court of Appeals, […]