Document:

Fifth Supplemental Indenture dated as of August 2, 2004

 EXHIBIT 4.2.1 
  

 CHESAPEAKE ENERGY CORPORATION 
 and 
 the Subsidiary Guarantors named herein 
  

 7.00% SENIOR NOTES DUE 2014

  

 FIFTH SUPPLEMENTAL
INDENTURE 
 DATED AS OF NOVEMBER 14, 2005 
  

 THE BANK OF NEW YORK 
 as Trustee 
  

 THIS FIFTH SUPPLEMENTAL INDENTURE, dated as of November 14, 2005, is among Chesapeake Energy
Corporation, an Oklahoma corporation (the “Company”), each of the parties identified under the caption “Subsidiary Guarantors” on the signature page hereto (the “Subsidiary Guarantors”) and The Bank of New
York, as Trustee. 
 RECITALS 
 WHEREAS, the Company, the Subsidiary Guarantors a party thereto and the Trustee entered into an Indenture, dated as of August 2, 2004, as supplemented prior to the date hereof(the “Indenture”), pursuant to which the
Company has originally issued $300,000,000 in principal amount of 7.00% Senior Notes due 2014 (the “Notes”); and 
 WHEREAS,
Section 9.01(3) of the Indenture provides that the Company, the Subsidiary Guarantors and the Trustee may amend or supplement the Indenture without notice to or consent of any Holder to reflect: (a) the addition of any Subsidiary
Guarantor, as provided for in the Indenture, and (b) the release of any Subsidiary Guarantor as provided for in the Indenture; and 
 WHEREAS, the Board of Directors of the Company has designated Chesapeake Appalachia, L.L.C., Columbia Natural Resources, L.L.C., Columbia Energy Resources, L.L.C., and Hawg Hauling & Disposal, L.L.C. as Restricted Subsidiaries of
the Company and desires to add the entities as Subsidiary Guarantors under the Indenture; and 
 WHEREAS, the Company has taken all actions
required to effect the release, pursuant to Sections 10.02 and 10.04 of the Indenture, of Chesapeake Permian Acquisition, L.L.C. (“Permian”), an Oklahoma limited liability company as a Subsidiary Guarantor; 
 WHEREAS, all acts and things prescribed by the Indenture, by law and by the charter and the bylaws (or comparable constituent documents) of the Company,
of the Subsidiary Guarantors and of the Trustee necessary to make this Fifth Supplemental Indenture a valid instrument legally binding on the Company, the Subsidiary Guarantors and the Trustee, in accordance with its terms, have been duly done and
performed; 
 NOW, THEREFORE, to comply with the provisions of the Indenture and in consideration of the above premises, the Company, the
Subsidiary Guarantors and the Trustee covenant and agree for the equal and proportionate benefit of the respective Holders of the Notes as follows: 
 ARTICLE 1 
 Section 1.01. This Fifth Supplemental Indenture is supplemental to the Indenture and does and shall
be deemed to form a part of, and shall be construed in connection with and as part of, the Indenture for any and all purposes. 
  

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 Section 1.02. This Fifth Supplemental Indenture shall become effective immediately upon its
execution and delivery by each of the Company, the Subsidiary Guarantors and the Trustee. 
 ARTICLE 2 
 Section 2.01. From this date, in accordance with Section 10.03 of the Indenture and by executing this Fifth Supplemental Indenture,
Columbia Natural Resources, L.L.C., Columbia Energy Resources, L.L.C., and Hawg Hauling & Disposal, L.L.C., all Delaware limited liability companies, and Chesapeake Appalachia, L.L.C., an Oklahoma limited liability company are subject to
the provisions of the Indenture as Subsidiary Guarantors to the extent provided for in Article Ten thereunder. 
 ARTICLE 3 
 Section 3.01. As a result of the merger of Permian with and into Chesapeake Permian, L.P., an Oklahoma limited partnership
(“CPLP”), which constitutes a merger with a Subsidiary Guarantor under Section 10.02(a) of the Indenture, Permian shall for all purposes be released as a Subsidiary Guarantor from all of its Guarantees and related obligations in the
Indenture, pursuant to Section 10.04 of the Indenture. The notation on the Securities relating to the Guarantee shall be deemed to exclude the name of Permian; and the signature of an Officer of Permian. 
 Section 3.02. As the surviving entity in its merger with Permian and a Subsidiary Guarantor, CPLP hereby agrees to assume all of the
obligations of Permian. 
 ARTICLE 4 
 Section 4.01. Except as specifically modified herein, the Indenture and the Notes are in all respects ratified and confirmed (mutatis mutandis) and shall remain in full force and effect in
accordance with their terms with all capitalized terms used herein without definition having the same respective meanings ascribed to them as in the Indenture. 
 Section 4.02. Except as otherwise expressly provided herein, no duties, responsibilities or liabilities are assumed, or shall be construed to be assumed, by the Trustee by reason of this Fifth Supplemental
Indenture. This Fifth Supplemental Indenture is executed and accepted by the Trustee subject to all the terms and conditions set forth in the Indenture with the same force and effect as if those terms and conditions were repeated at length herein
and made applicable to the Trustee with respect hereto. 
 Section 4.03. The Company hereby notifies the Trustee that Chesapeake
Appalachia, L.L.C., Columbia Natural Resources, L.L.C., Columbia Energy Resources, L.L.C., and Hawg Hauling & Disposal, L.L.C. have been designated by the Board of Directors of the Company as Restricted Subsidiaries (as that term is defined
in the Indenture). 
 Section 4.04. THE LAW OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE AND ENFORCE THIS FIFTH
SUPPLEMENTAL INDENTURE. 
  

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 Section 4.05. The parties may sign any number of copies of this Fifth Supplemental Indenture.
Each signed copy shall be an original, but all of such executed copies together shall represent the same agreement. 
 [NEXT PAGE IS SIGNATURE
PAGE] 
  

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 IN WITNESS WHEREOF, the parties hereto have caused this Fifth Supplemental Indenture to be duly executed,
all as of the date first written above. 
  

	
	 /s/ Aubrey K. McClendon

	Aubrey K. McClendon
	
	 Chief Executive Officer of the Company and of
 the Subsidiaries listed below:

	
	 Corporate Subsidiaries:

	
	 CHESAPEAKE EAGLE CANADA CORP.

	 CHESAPEAKE ENERGY LOUISIANA CORPORATION

	 CHESAPEAKE PRH CORP.

	 CHESAPEAKE SOUTH TEXAS CORP.

	 NOMAC DRILLING CORPORATION

	 OXLEY PETROLEUM CO.

	
	 CHESAPEAKE OPERATING, INC.,

	 On behalf of itself and, as general partner, the following limited partnerships:

	
	 CHESAPEAKE EXPLORATION LIMITED

	     PARTNERSHIP

	 CHESAPEAKE LOUISIANA, L.P.

	 CHESPEAKE NFW, L.P.

	 CHESAPEAKE PERMIAN, L.P.

	 CHESAPEAKE SIGMA, L.P.

	 CHESAPEAKE-STAGHORN ACQUISITION, L.P.

	 CHESAPEAKE ZAPATA, L.P.

	
	 CHESAPEAKE ENERGY MARKETING, INC.,

	 On behalf of itself and, as general partner, the
 following limited partnerships:

	
	 MIDCON COMPRESSION, L.P.

	
	 Limited Liability Company Subsidiaries:

	
	 CHESAPEAKE APPALACHIA, L.L.C.

	 COLUMBIA NATURAL RESOURCES, L.L.C.

	 COLUMBIA ENERGY RESOURCES, L.L.C.

	 HAWG HAULING & DISPOSAL, L.L.C.

	 CARMEN ACQUISITION, L.L.C.

	 CHESAPEAKE ACQUISITION, L.L.C.

	 CHESAPEAKE ENO ACQUISITION, L.L.C.

	 CHESAPEAKE EP, L.L.C.

  

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	 CHESAPEAKE LAND COMPANY, L.L.C.

	 CHESAPEAKE ORC, L.L.C.

	 CHESAPEAKE ROYALTY, L.L.C.

	 GOTHIC PRODUCTION, L.L.C.

	 JOHN C. OXLEY, L.L.C.

	 MC MINERAL COMPANY, L.L.C.

	 MAYFIELD PROCESSING, L.L.C.

	
	 TRUSTEE:

	
	 THE BANK OF NEW YORK, as Trustee

  

			
	By:	 	 /s/ Linda Garcia

	Name:	 	Linda Garcia
	Title:	 	Assistant Vice President

  

 - 5 -Sixth Supplemental Indenture dated as of August 2, 2004

 EXHIBIT 4.2.2 
  

 CHESAPEAKE ENERGY CORPORATION 
 and 
 the Subsidiary Guarantors named herein 
  

 7.00% SENIOR NOTES DUE 2014

  

 SIXTH SUPPLEMENTAL
INDENTURE 
 DATED AS OF FEBRUARY 24, 2006 
  

 THE BANK OF NEW YORK TRUST COMPANY, N.A. 
 as Trustee 
  

 THIS SIXTH SUPPLEMENTAL INDENTURE, dated as of February 24, 2006, is among Chesapeake Energy
Corporation, an Oklahoma corporation (the “Company”), each of the parties identified under the caption “Subsidiary Guarantors” on the signature page hereto (the “Subsidiary Guarantors”) and The Bank of New
York Trust Company, N.A. as Trustee. 
 RECITALS 
 WHEREAS, the Company, the Subsidiary Guarantors a party thereto and the Trustee entered into an Indenture, dated as of August 2, 2004, as supplemented prior to the date hereof(the “Indenture”),
pursuant to which the Company has originally issued $300,000,000 in principal amount of 7.00% Senior Notes due 2014 (the “Notes”); and 
 WHEREAS, Section 9.01(3) of the Indenture provides that the Company, the Subsidiary Guarantors and the Trustee may amend or supplement the Indenture without notice to or consent of any Holder to reflect:
(a) the addition of any Subsidiary Guarantor, as provided for in the Indenture, and (b) the release of any Subsidiary Guarantor as provided for in the Indenture; and 
 WHEREAS, the Board of Directors of the Company has designated Hodges Holding Company, Inc., Hodges Oilfield Company, Hodges Trucking Company, Nomac 100
Corp. and W.W. Realty, Inc. as Restricted Subsidiaries of the Company and desires to add the entities as Subsidiary Guarantors under the Indenture; and 
 WHEREAS, the Company has taken all actions required to effect the release, pursuant to Sections 10.02 and 10.04 of the Indenture, of Chesapeake PRH Corp. (“PRH”), a Texas corporation, Chesapeake ENO
Acquisition, L.L.C. (“ENO”), an Oklahoma limited liability company, Chesapeake EP, L.L.C. (“EP”), an Oklahoma limited liability company, John C. Oxley, L.L.C. (“Oxley”), an Oklahoma limited liability company, Columbia
Natural Resources, L.L.C. (“CNR”), a Delaware limited liability company, Columbia Energy Resources, L.L.C. (“CER”), a Delaware limited liability company, Chesapeake NFW, L.P. (“NFW”), an Oklahoma limited partnership,
Chesapeake Permian, L.P. (“Permian”), an Oklahoma limited partnership, Chesapeake-Staghorn Acquisition, L.P. (“Staghorn”), an Oklahoma limited partnership and Chesapeake Zapata, L.P. (“Zapata”), an Oklahoma Limited
Partnership; 
 WHEREAS, all acts and things prescribed by the Indenture, by law and by the charter and the bylaws (or comparable constituent
documents) of the Company, of the Subsidiary Guarantors and of the Trustee necessary to make this Sixth Supplemental Indenture a valid instrument legally binding on the Company, the Subsidiary Guarantors and the Trustee, in accordance with its
terms, have been duly done and performed; 
 NOW, THEREFORE, to comply with the provisions of the Indenture and in consideration of the above
premises, the Company, the Subsidiary Guarantors and the Trustee covenant and agree for the equal and proportionate benefit of the respective Holders of the Notes as follows: 
  

 - 1 - 

 ARTICLE 1 
 Section 1.01. This Sixth Supplemental Indenture is supplemental to the Indenture and does and shall be deemed to form a part of, and shall be construed in connection with and as part of, the Indenture for
any and all purposes. 
 Section 1.02. This Sixth Supplemental Indenture shall become effective immediately upon its execution
and delivery by each of the Company, the Subsidiary Guarantors and the Trustee. 
 ARTICLE 2 
 Section 2.01. From this date, in accordance with Section 10.03 of the Indenture and by executing this Sixth Supplemental Indenture,
Hodges Holding Company, Inc., Hodges Oilfield Company, Hodges Trucking Company, Nomac 100 Corp. and W.W. Realty, Inc., all Oklahoma corporations, are subject to the provisions of the Indenture as Subsidiary Guarantors to the extent provided for in
Article Ten thereunder. 
 ARTICLE 3 
 Section 3.01. As a result of the merger of PRH, ENO, EP, Oxley, NFW, Permian, and Zapata, with and into Chesapeake Exploration Limited Partnership, an Oklahoma limited partnership (“CELP”), which
constitutes a merger with a Subsidiary Guarantor under Section 10.02(a) of the Indenture, PRH, ENO, EP, Oxley, NFW, Permian, and Zapata shall for all purposes be released as Subsidiary Guarantors from all of their Guarantees and related
obligations in the Indenture, pursuant to Section 10.04 of the Indenture. The notation on the Securities relating to the Guarantee shall be deemed to exclude the names of PRH, ENO, EP, Oxley, NFW, Permian, and Zapata, the signature of an
Officer of each of PRH, ENO, EP and Oxley and the signature of an Officer of Chesapeake Operating, Inc. on behalf of NFW, Permian and Zapata. 
 Section 3.02. As the surviving entity in its merger with PRH, ENO, EP, Oxley, NFW, Permian, and Zapata and a Subsidiary Guarantor, CELP hereby agrees to assume all of the obligations of PRH, ENO, EP, Oxley, NFW, Permian, and
Zapata. 
 Section 3.03. As a result of the merger of CNR and CER, with and into Chesapeake Appalachia, L.L.C., an Oklahoma
limited liability company, which constitutes a merger with a Subsidiary Guarantor under Section 10.02(a) of the Indenture, CNR and CER shall for all purposes be released as Subsidiary Guarantors from all of their Guarantees and related
obligations in the Indenture, pursuant to Section 10.04 of the Indenture. The notation on the Securities relating to the Guarantee shall be deemed to exclude the names of CNR and CER, the signature of an Officer of CNR and the signature of an
Officer of CER. 
 Section 3.04. As the surviving entity in its merger with CER and CNR and a Subsidiary Guarantor, Chesapeake
Appalachia, L.L.C. hereby agrees to assume all of the obligations of CNR and CER. 
  

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 Section 3.05. As a result of the dissolution of Staghorn, the Company has taken all actions
required to effect the release, pursuant to Section 10.04 of the Indenture, of Staghorn as a Subsidiary Guarantor. The notation on the Securities relating to the Guarantee shall be deemed to exclude the name of Staghorn and the signature of an
Officer of Staghorn on its behalf. 
 ARTICLE 4 
 Section 4.01. Except as specifically modified herein, the Indenture and the Notes are in all respects ratified and confirmed (mutatis mutandis) and shall remain in full force and effect in
accordance with their terms with all capitalized terms used herein without definition having the same respective meanings ascribed to them as in the Indenture. 
 Section 4.02. Except as otherwise expressly provided herein, no duties, responsibilities or liabilities are assumed, or shall be construed to be assumed, by the Trustee by reason of this Sixth Supplemental
Indenture. This Sixth Supplemental Indenture is executed and accepted by the Trustee subject to all the terms and conditions set forth in the Indenture with the same force and effect as if those terms and conditions were repeated at length herein
and made applicable to the Trustee with respect hereto. 
 Section 4.03. The Company hereby notifies the Trustee that Hodges
Holding Company, Inc., Hodges Oilfield Company, Hodges Trucking Company, Nomac 100 Corp. and W.W. Realty, Inc. have been designated by the Board of Directors of the Company as Restricted Subsidiaries (as that term is defined in the Indenture).

 Section 4.04. THE LAW OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE AND ENFORCE THIS SIXTH SUPPLEMENTAL
INDENTURE. 
 Section 4.05. The parties may sign any number of copies of this Sixth Supplemental Indenture. Each signed copy
shall be an original, but all of such executed copies together shall represent the same agreement. 
 [NEXT PAGE IS SIGNATURE PAGE]

  

 - 3 - 

 IN WITNESS WHEREOF, the parties hereto have caused this Sixth Supplemental Indenture to be duly executed,
all as of the date first written above. 
  

	
	 /s/ Aubrey K. McClendon

	 Aubrey K. McClendon

	
	 Chief Executive Officer of the Company and of
 the Subsidiaries listed below:

	
	 Corporate Subsidiaries:

	
	 CHESAPEAKE EAGLE CANADA CORP.

	 CHESAPEAKE ENERGY LOUISIANA CORPORATION

	 CHESAPEAKE SOUTH TEXAS CORP.

	 NOMAC DRILLING CORPORATION

	 OXLEY PETROLEUM CO.

	 HODGES HOLDING COMPANY, INC.

	 HODGES OILFIELD COMPANY

	 HODGES TRUCKING COMPANY

	 NOMAC 100 CORP.

	 W.W. REALTY, INC.

	
	 CHESAPEAKE OPERATING, INC.,

	 On behalf of itself and, as general partner, the
 following limited partnerships:

	
	 CHESAPEAKE EXPLORATION LIMITED PARTNERSHIP

	 CHESAPEAKE LOUISIANA, L.P.

	 CHESAPEAKE SIGMA, L.P.

	
	 CHESAPEAKE ENERGY MARKETING, INC.,

	 On behalf of itself and, as general partner, the
 following limited partnerships:

	
	 MIDCON COMPRESSION, L.P.

	
	 Limited Liability Company Subsidiaries:

	
	 CHESAPEAKE APPALACHIA, L.L.C.

	 HAWG HAULING & DISPOSAL, L.L.C.

	 CARMEN ACQUISITION, L.L.C.

	 CHESAPEAKE ACQUISITION, L.L.C.

	 CHESAPEAKE LAND COMPANY, L.L.C.

  

 - 4 - 

	
	CHESAPEAKE ORC, L.L.C.
	CHESAPEAKE ROYALTY, L.L.C.
	GOTHIC PRODUCTION, L.L.C.
	MC MINERAL COMPANY, L.L.C.
	MAYFIELD PROCESSING, L.L.C.

  

			
	TRUSTEE:
	
	THE BANK OF NEW YORK TRUST COMPANY, N.A., as Trustee
		
	By:	 	 /s/ Linda Garcia

	Name:	 	Linda Garcia
	Title:	 	Assistant Vice President

  

 - 5 -

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