FILED 14-0302 8/5/2015 2:45:03 PM tex-6369975 SUPREME COURT OF TEXAS BLAKE A. HAWTHORNE, CLERK No. 14-0302 IN THE SUPREME COURT OF TEXAS

CHESAPEAKE EXPLORATION, L.L.C. AND CHESAPEAKE OPERATING, INC., Petitioners, v. MARTHA ROWAN HYDER, INDIVIDUALLY, AND AS INDEPENDENT EXECUTRIX AND TRUSTEE UNDER THE WILL OF ELTON M. HYDER, JR., DECEASED, AND AS TRUSTEE UNDER THE ELTON M. HYDER JR. RESIDUARY TRUST, AND AS TRUSTEE OF THE ELTON M. HYDER JR. MARITAL TRUST, ET AL., Respondents.

On Petition for Review from the Fourth Court of Appeals, San Antonio, Texas Court of Appeals No. 04-12-00769-CV

NOTICE OF APPEARANCE OF ADDITIONAL COUNSEL OF RECORD

TO THE HONORABLE SUPREME COURT OF TEXAS: Please take notice that Deborah G. Hankinson and Rebecca Adams Cavner of the law firm of Hankinson LLP have been retained by Petitioners Chesapeake Exploration, L.L.C. and Chesapeake Operating, Inc., in the above-captioned matter.

New appellate counsel’s contact information is as follows: Deborah G. Hankinson State Bar No. 00000020 [email protected] Rebecca Adams Cavner State Bar No. 00874900 [email protected] Hankinson LLP North St. Paul St., Suite 1800 Dallas, Texas 75201 214.754.9190 214.754.9140 (fax) Please note that Bart A. Rue, Matthew D. Stayton, and Joe Greenhill of the law firm of Kelly Hart & Hallman LLP will remain as lead counsel for Petitioners in this appeal.

Respectfully submitted,

/s/ Deborah G. Hankinson Bart A. Rue Deborah G. Hankinson State Bar No. 17380500 State Bar No. 00000020 [email protected] [email protected] Matthew D. Stayton Rebecca Adams Cavner State Bar No. 24033219 State Bar No. 00784900 [email protected] [email protected] Joe Greenhill Hankinson LLP State Bar 24084523 750 N. St. Paul Street, Suite 1800 [email protected] Dallas, Texas 75201 Kelly Hart & Hallman LLP Telephone: (214) 754-9190 Main Street, Suite 2500 Telecopier: (214) 754-9140 Fort Worth, Texas 76102 Telephone: (817) 332-2500 Telecopier: (214) 878-9280 Counsel for Petitioners

CERTIFICATE OF SERVICE The undersigned certifies that a copy of the foregoing was served upon the following persons via electronic service on this 5th day of August, 2015: Michael A. Heidler Marie R. Yeates [email protected] [email protected] Vinson & Elkins LLP Vinson & Elkins LLP 2801 Via Fortuna, Suite 100 1001 Fannin street, Suite 2500 Austin, Texas 78746 Houston, Texas 77002 Counsel for Amicus Curiae Counsel for Amicus Curiae Texas Oil & Gas Association Texas Oil & Gas Association

David J. Drez III Ken Slavin [email protected] [email protected] Jeffrey W. Helberg, Jr. Kemp Smith LLP [email protected] 221 North Kansas, Suite 1700 Jacob T. Fain El Paso, Texas 79901 [email protected] Counsel for Amicus Curiae Wick Phillips Gould & Martin, LLP The General Land Office Throckmorton, Suite 500 Of the State of Texas Fort Worth, Texas 76102 Counsel for Respondents Roger D. Townsend Dana Livingston [email protected] [email protected] Robert B. Dubose Alexander Dubose Jefferson [email protected] & Townsend LLP Alexander Dubose Jefferson 515 Congress Avenue, Suite 2350 & Townsend LLP Austin, Texas 78701 1844 Harvard Street Counsel for Amicus Curiae Houston, Texas 77008 Wesley West Minerals, Ltd. and Counsel for Amicus Curiae Longfellow Ranch Partners, LP Wesley West Minerals, Ltd. and Longfellow Ranch Partners LP

Hon. Raul A. Gonzalez John B. McFarland [email protected] [email protected] 10511 River Plantation Dr. Graves, Dougherty, Hearon Austin, Texas 78747 & Moody, P.C.

Counsel for Texas Land and 401 Congress Avenue, Suite 2200 Mineral Owners Association and Austin, Texas 78701 National Association of Royalty Counsel for Texas Land and Owners-Texas, Inc. Mineral Owners Association and National Association of Royalty Owners-Texas, Inc.

/s/ Rebecca Adams Cavner Rebecca Adams Cavner