Exhibit 10.97

FOURTH AMENDMENT TOGAS SALES AGREEMENT

This Fourth Amendment to Gas Sales Agreement (Amendment) is effective as of  March  31, 2003, by Tipperary Oil & Gas (Australia) Pty Ltd
(ACN 077 536 871) of GPO Box 1100, Brisbane, Queensland, Australia 4001 (Seller), and QUEENSLAND FERTILISER ASSETS LIMITED (ACN 011 062 294) of 76 Arthur Street, Roma, Queensland, Australia (Buyer).

WITNESSETH:

| | A. The Seller and Buyer have previously delivered Gas Sales Agreement dated September 28, 2001, as amended by Amendment to Gas Sales Agreement dated as of May 30, 2002, Second
Amendment to Gas Sale Agreement dated as of September 1, 2002 and Third Amendment to Gas Sale Agreement dated as of January 1, 2003 (collectively, the Original Agreement) governing the sale and supply of Gas to Buyer subject to the terms
and conditions set forth therein including, without limitation, the Seller and the Buyer obtaining necessary financing commitments, under terms reasonably acceptable to each of them, by March 31, 2003 for (a) Buyer to construct and commission the
Plant and the Pipeline between March 31, 2003 and the Commencement Date  and (b) Seller to drill and complete the number of wells, and install laterals and compressors, as Seller reasonably deems necessary between March 31, 2003 and the
Commencement Date to deliver the ACQ to the Delivery Point and meet Pipeline Pressure requirements; and
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| | B. The Seller and Buyer have agreed, subject to the terms and conditions set forth below, to amend the Original Agreement to (1) extend the date for Seller and Buyer to obtain their
respective financing commitments to June 30, 2003 and (2)otherwise modify the Original Agreement as set forth herein.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

NOW, THEREFORE, for a sufficient consideration received by each, the Seller and Buyer agree to amend the Original Agreement as follows.

| | 1. | Definitions.The definition of Commencement Date in the Original Agreement is hereby amended and replaced in its entirety as set forth below.
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| |    | Commencement Date means the later of:                                                                                                     
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| |    | (a)                                                                                                                                         
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| |    | (b)                                                                                                                                         

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| |    | provided that, if Buyer has not previously taken the first delivery of Gas from the Seller under Subparagraph (b) above, the Commencement Date shall be deemed to occur on
1 August 2005.                                                                                                                            
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| | 2. | Sale and Purchase. Section 2.1, the preamble of Section 2.2 and Section 2.4 of the Original Agreement, each stating conditions precedent to
Sellers and Buyers obligations under the Original Agreement, are hereby amended and replaced in their entirety as set forth below.                                      
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| |    | 2.1     The obligations of the Parties under the Agreement, other than their obligations under Clauses 17, 20 and 24, are subject to and do
not become binding unless:                                                                                                                                               
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| |    | (a)                                                                                                                                                                                                                                                                                                                   
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| |    | (b)                                                                                                                                                                                                                                                                                                                   
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| |    | 2.2     In addition to the conditions in Clause 2.1, Buyer shall begin actual construction of the Plant by October 31, 2003, and diligently
prosecute actual construction of the Plant and the Pipeline thereafter in an orderly and prudent manner through and until the Commencement Date.                        
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| |    | 2.4     The Buyer must deliver written notice to the Seller not less that forty-five (45) Business Days before the Day on which the Buyer
intends to take the first delivery of Gas from the Seller under this Agreement; provided that Seller shall have no obligation to supply Gas to Buyer before 1 April 2005.

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| | 3. | Authority, Effect and Governing Law. Section 20.1 (a), containing a representation and warranty regarding Sellers and Buyers corporate
proceedings with respect to the Original Agreement, is hereby amended and replaced in its entirety as set forth below.                                                                                                                                                              
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| |    | 20.1     Each Party represents and warrants to the other Party now and at all times during the Term:                                                                                                                                                                                                                                                                                                                        
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| | 4. | Capitalized Terms. All capitalized terms shall have the meaning assigned to them in the Original Agreement, except as added, amended or otherwise restated
herein or unless the context clearly requires otherwise. In addition: references in the Original Agreement to the Agreement,  hereof, herein and words of similar import shall be deemed to be references to the
Original Agreement as amended hereby.      
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| | 5. | Representations.  The Seller and Buyer respectively represent and warrant that all of the representations and warranties contained in the Original Agreement
(and any certificates and documents executed pursuant thereto or contemplated thereby) are true and correct in all material respects on and as of the effective date of this Amendment.                                                                         
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| | 6. | Conflicts and Continuation. In the event that this Amendment conflicts or is inconsistent with the Original Agreement, this Amendment shall control. Except
as specifically amended herein, all of the terms and conditions of the Original Agreement (and any certificates and documents executed pursuant thereto or contemplated thereby) shall remain in full force and effect in accordance with their
respective terms.
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| | 7. | Severability.  In the event any one or more provisions contained in the Original Agreement or this Amendment should be held to be invalid, illegal or
unenforceable in any respect, the validity, enforceability and legality of the remaining provisions contained herein and therein shall not be affected in any way or impaired thereby and shall be enforceable in accordance with their respective
terms.              
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| | 8. | Acknowledgment.  The Seller and Buyer respectively ratify and confirm that the Original Agreement (and any certificates and documents executed pursuant
thereto or contemplated thereby) remain in full force and effect in accordance with their respective terms, except as amended hereby. The representatives of the                                                                                                     

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| |  | Seller and Buyer executing this Amendment each represent and warrant to the others that they are duly appointed agents or officers of the party to the Original Agreement as
designated in the signature lines below, they have full power and authority to execute and deliver this Amendment on behalf of the party to the Original Agreement as designated below, they have obtained all corporate or other authorizations as may
be applicable to each of them.
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EXECUTED as an agreement.

|THE, COMMON SEAL of TIPPERARY OIL & GAS (Australia)             | )
|--------------------------------------------------------------- | -
|Pty LTD (ACN 077 536 871 was duly affixed to this document in   | )
|accordance with its articles of association in the presence of: | )

|/s/ ELAINE R. TREECE             |  | /s/ DAVID L. BRADSHAW          
|-------------------------------- |  | -------------------------------
|                                 |  |                                
|Signature of Secretary           |  | Signature of Director          
|                                 |  |                                
|ELAINE R. TREECE                 |  | DAVID L. BRADSHAW              
|                                 |  |                                
|Name of Secretary  please print |  | Name of Director  please print
|                                 |  |                                
|MAY 6, 2003                      |  | MAY 6, 2003                    
|                                 |  |                                
|Date                             |  | Date                           

|THE COMMON SEAL OF QUEENSLAND                        | )
|---------------------------------------------------- | -
|FERTILIZER ASSETS LIMITED (ACN 011 062 294)          | )
|was duly affixed to this document in accordance      | )
|with its Articles of Association in the presence of: | )

|/s/ H. J. K. HOWES               |  | /s/ JOHN F. BABBITT            
|-------------------------------- |  | -------------------------------
|                                 |  |                                
|Signature of Secretary           |  | Signature of Director          
|                                 |  |                                
|H. J. K. HOWES                   |  | JOHN F. BABBITT                
|                                 |  |                                
|Name of Secretary  please print |  | Name of Director  please print
|                                 |  |                                
|MAY 26, 2003                     |  | MAY 12, 2003                   
|                                 |  |                                
|Date                             |  | Date                           

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