Exhibit 10.35
SIXTH AMENDMENT TO COMBINED CREDIT AGREEMENTS
          THIS SIXTH AMENDMENT TO COMBINED CREDIT AGREEMENTS (this “Amendment”),
dated as of September 30, 2008, is entered into by and among QUICKSILVER
RESOURCES INC., a Delaware corporation (the “U.S. Borrower”), QUICKSILVER
RESOURCES CANADA INC., an Alberta, Canada corporation (the “Canadian Borrower”
and, collectively with the U.S. Borrower, the “Combined Borrowers”), each of the
Lenders (as defined in the U.S. Credit Agreement (as hereinafter defined)) party
hereto (together with its successors and assigns, the “U.S. Lenders”), each of
the Lenders (as defined in the Canadian Credit Agreement (as hereinafter
defined)) party hereto (together with its successors and assigns, the “Canadian
Lenders” and, together with the U.S. Lenders, the “Combined Lenders”), JPMORGAN
CHASE BANK, N.A., as global administrative agent (in such capacity, the “Global
Administrative Agent”), and JPMORGAN CHASE BANK, N.A., TORONTO BRANCH, as
Canadian administrative agent (in such capacity, the “Canadian Administrative
Agent”).
W I T N E S S E T H:
          1.          The U.S. Borrower, the Global Administrative Agent, the
other Agents party thereto and the U.S. Lenders are parties to that certain
Amended and Restated Credit Agreement dated as of February 9, 2007 (as amended,
supplemented, restated or otherwise modified from time to time, the “U.S. Credit
Agreement”), pursuant to which the U.S. Lenders agreed to make loans to, and
extensions of credit on behalf of, the U.S. Borrower.
          2.          The Canadian Borrower, the Global Administrative Agent,
the Canadian Administrative Agent, the other Agents party thereto and the
Canadian Lenders are parties to that certain Amended and Restated Credit
Agreement dated as of February 9, 2007 (as amended, supplemented, restated or
otherwise modified from time to time, the “Canadian Credit Agreement” and,
together with the U.S. Credit Agreement, the “Combined Credit Agreements”),
pursuant to which the Canadian Lenders agreed to make loans to, and extensions
of credit on behalf of, the Canadian Borrower.
          3.          The Combined Borrowers have requested (a) that the Global
Borrowing Base (as defined in each of the Combined Credit Agreements), the U.S.
Borrowing Base and the Allocated U.S. Borrowing Base (as defined in each of the
Combined Credit Agreements) be increased as set forth herein and (b) that the
Combined Credit Agreements be amended to amend certain other terms of the
Combined Credit Agreements in certain respects as provided in this Amendment.
          4.          The U.S. Borrower has requested that Scotiabanc Inc. and
Goldman Sachs Bank USA (each of the foregoing financial institutions are herein
referred to as a “New U.S. Lender”) become new U.S. Lenders under the U.S.
Credit Agreement with Global Commitments as shown on Schedule 2.1 to the U.S.
Credit Agreement (as amended hereby).
          5.          Subject to and upon the terms and conditions set forth
herein, the Combined Lenders have agreed to the Combined Borrowers’ requests.

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          NOW, THEREFORE, in consideration of the premises and the mutual
covenants herein contained, the parties hereto agree as follows:
          I.           Amendment to Section 10.4 of U.S. Credit Agreement.   In
reliance on the representations and warranties of the U.S. Borrower and the
Canadian Borrower contained herein, and subject to the terms, and satisfaction
of the conditions precedent, set forth in Section VIII hereof, Section 10.4 of
the U.S. Credit Agreement shall be amended effective as of the Effective Date to
(a) delete the reference to “U.S.$5,000,000” set forth in clause (b)(iii) of
Section 10.4 of the U.S. Credit Agreement and replace it with “U.S.$2,500,000
unless each of the Borrower (unless an Event of Default has occurred and is
continuing) and the Global Administrative Agent otherwise consent”, (b) delete
the reference to “U.S.$5,000,000” set forth in clause (b)(vii) of Section 10.4
of the U.S. Credit Agreement and replace it with “U.S.$2,500,000”, and
(c) insert “(unless an Event of Default has occurred and is continuing)” after
the reference to “Borrower” in clause (b)(vii) of Section 10.4 of the U.S.
Credit Agreement.
          II.          Amendment to Section 10.4 of Canadian Credit Agreement.  
In reliance on the representations and warranties of the U.S. Borrower and the
Canadian Borrower contained herein, and subject to the terms, and satisfaction
of the conditions precedent, set forth in Section VIII hereof, Section 10.4 of
the Canadian Credit Agreement shall be amended effective as of the Effective
Date to (a) delete the reference to “U.S.$5,000,000” set forth in clause
(b)(iii) of Section 10.4 of the Canadian Credit Agreement and replace it with
“U.S.$2,500,000 unless each of the Borrower (unless an Event of Default has
occurred and is continuing) and the Global Administrative Agent otherwise
consent”, (b) delete the reference to “U.S.$5,000,000” set forth in clause
(b)(vii) of Section 10.4 of the Canadian Credit Agreement and replace it with
“U.S.$2,500,000”, and (c) insert “(unless an Event of Default has occurred and
is continuing)” after the reference to “Borrower” in clause (b)(vii) of
Section 10.4 of the Canadian Credit Agreement.
          III.          Amendment to Schedule 2.1 of U.S. Credit Agreement.   In
reliance on the representations and warranties of the U.S. Borrower and the
Canadian Borrower contained herein, and subject to the terms, and satisfaction
of the conditions precedent, set forth in Section VIII hereof, Schedule 2.1 to
the U.S. Credit Agreement shall be deleted in its entirety and Schedule 2.1 –
U.S. Credit Agreement attached to this Amendment shall be substituted in lieu
thereof, effective as of the Effective Date.
          IV.          Amendment to Schedule 2.1 of Canadian Credit Agreement.  
In reliance on the representations and warranties of the U.S. Borrower and the
Canadian Borrower contained herein, and subject to the terms, and satisfaction
of the conditions precedent, set forth in Section VIII hereof, Schedule 2.1 to
the Canadian Credit Agreement shall be deleted in its entirety and Schedule 2.1
– Canadian Credit Agreement attached to this Amendment shall be substituted in
lieu thereof, effective as of the Effective Date.
          V.           Joinder of New U.S. Lenders.   Effective as of the
Effective Date, each New U.S. Lender hereby joins in, becomes a party to, and
agrees to comply with and be bound by the terms and conditions of the U.S.
Credit Agreement as a Lender thereunder and under each and every other Loan
Document to which any U.S. Lender is required to be bound by the U.S. Credit
Agreement, to the same extent as if such New U.S. Lender were an original
signatory thereto.

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         VI.          Global Borrowing Base.
          A.          Subject to adjustments pursuant to Sections 2.8(d), (e),
(g), and (h) of the U.S. Credit Agreement or Sections 2.7(d), (e), (g), and
(h) of the Canadian Credit Agreement, by execution of this Amendment, each of
the Global Administrative Agent, the Combined Lenders, the U.S. Borrower and the
Canadian Borrower agree during the period from the date hereof to the date of
the next redetermination of the Global Borrowing Base (as defined in each of the
Combined Credit Agreements) pursuant to the provisions of Section 2.8 of the
U.S. Credit Agreement or Section 2.7 of the Canadian Credit Agreement that
(a) the Global Borrowing Base (as defined in each of the Combined Credit
Agreements) shall equal U.S.$1,200,000,000, (b) the U.S. Borrowing Base shall
equal U.S.$915,000,000, (c) the Allocated U.S. Borrowing Base (as defined in
each of the Combined Credit Agreements) shall equal U.S.$800,000,000, and
(d) the Allocated Canadian Borrowing Base (as defined in each of the Combined
Credit Agreements) shall equal U.S.$400,000,000.
          B.          Each of the Global Administrative Agent, the Combined
Lenders, the U.S. Lenders, the U.S. Borrower and the Canadian Borrower agree and
acknowledge that (a) the determination of the Global Borrowing Base (as defined
in each of the Combined Credit Agreements) and U.S. Borrowing Base set forth in
Section VI(A) of this Amendment is not a Scheduled Redetermination of the Global
Borrowing Base (as defined in each of the Combined Credit Agreements) and the
U.S. Borrowing Base pursuant to Section 2.8(b) of the U.S. Credit Agreement or
Section 2.7(b) of the Canadian Credit Agreement and (b) such determination of
the Global Borrowing Base (as defined in each of the Combined Credit Agreements)
and the U.S. Borrowing Base shall not be considered as a request for a
“discretionary determination” of the Global Borrowing Base (as defined in each
of the Combined Credit Agreements) and the U.S. Borrowing Base by the Borrower,
the Global Administrative Agent or the Required Lenders for the purposes of
Section 2.8(e) of the U.S. Credit Agreement or Section 2.7(e) of the Canadian
Credit Agreement.
          C.          In accordance with Section 2.1(c) of each of the U.S.
Credit Agreement and the Canadian Credit Agreement, the Global Administrative
Agent hereby notifies the Canadian Administrative Agent, the Combined Lenders,
the U.S. Borrower and the Canadian Borrower of the reallocation of the Global
Commitments under the Combined Credit Agreements as set forth and described on
Schedule 2.1 – U.S. Credit Agreement and Schedule 2.1 – Canadian Credit
Agreement attached hereto.
          VII.       Rearrangement of Existing Loans.   Upon the effectiveness
of this Amendment:
          A.          All of the Combined Commitments and outstanding Combined
Obligations under the Combined Credit Agreements as of the date of such
effectiveness shall hereby be restructured, rearranged, renewed, extended and
continued under the applicable Combined Credit Agreement (as amended hereby) and
all Combined Loans and Letters of Credit (as defined in each of the Combined
Credit Agreements) outstanding under the applicable Combined Credit Agreement as
of the date of such effectiveness shall hereby become Combined Loans and Letters
of Credit (as defined in each of the Combined Credit Agreements) outstanding
under the applicable Combined Credit Agreement (as amended hereby).

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          B.          In connection herewith, the Combined Lenders party to the
Combined Credit Agreements prior to the effectiveness of this Amendment (the
“Existing Lenders”) hereby sell, assign, transfer and convey, and the Combined
Lenders hereby purchase and accept, so much of the aggregate Combined
Commitments under, Combined Loans outstanding under, and participations in
Letters of Credit (as defined in each of the Combined Credit Agreements) issued
pursuant to, the Combined Credit Agreements such that the Combined Commitment of
each Combined Lender shall be as set forth on Schedule 2.1 to each of the
Combined Credit Agreements (as amended hereby).   The foregoing assignments,
transfers and conveyances are without recourse to the Existing Lenders and
without any warranties whatsoever by any Agent, any Issuing Bank or any Existing
Lender as to title, enforceability, collectability, documentation or freedom
from liens or encumbrances, in whole or in part, other than the warranty of each
Existing Lender that it has not previously sold, transferred, conveyed or
encumbered such interests.
          VIII.      Effectiveness.   This Amendment shall become effective as
of the date that each of the following conditions precedent have been satisfied
(the “Effective Date”):
          A.          The Global Administrative Agent shall have received
counterparts hereof duly executed by the U.S. Borrower, the Canadian Borrower,
the Global Administrative Agent, the Canadian Administrative Agent, each
Combined Lender whose Commitment is increasing hereunder, each New U.S. Lender,
the Supermajority Lenders and the U.S. Supermajority Lenders (or, in the case of
any party as to which an executed counterpart shall not have been received,
telegraphic, telex, or other written confirmation from such party of execution
of a counterpart hereof by such party).
          B.          The Combined Borrowers shall have paid (i) all reasonable
out-of-pocket fees and expenses of counsel for the Global Administrative Agent
incurred, to the extent the same have been invoiced and sent to the U.S.
Borrower at least two (2) Business Days prior to the Effective Date, including
all such out-of-pocket fees and expenses incurred in connection with the
preparation, negotiation and execution of this Amendment and any other Combined
Loan Documents to be executed and delivered in connection therewith and (ii) any
and all fees payable to Global Administrative Agent or certain Combined Lenders
pursuant to or in connection with this Amendment in consideration for the
agreements set forth herein.
          C.          Each Combined Lender that is a New U.S. Lender or whose
Global Commitment is increasing hereunder that has requested a Note shall have
received a duly completed and executed Note, payable to the order of such
Combined Lender.
          D.          If, on the Effective Date, any Eurodollar Borrowings are
outstanding under the Combined Credit Agreements and if the Effective Date is
not the last day of the Interest Period(s) in respect of such Eurodollar
Borrowings, the Combined Borrowers shall have paid any compensation required
under Section 2.17 of the U.S. Credit Agreement and Section 2.16 of the Canadian
Credit Agreement.
          E.          No Default, Event of Default, Global Borrowing Base
Deficiency or U.S. Borrowing Base Deficiency shall have occurred which is
continuing.

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          IX.       Reaffirmation of Representations and Warranties.   To induce
the Combined Lenders and the Global Administrative Agent to enter into this
Amendment, the U.S. Borrower and the Canadian Borrower hereby reaffirm, as of
the date hereof, the following:
                     (i)           The representations and warranties of each
Loan Party (as such term is defined in the U.S. Credit Agreement and the
Canadian Credit Agreement, collectively, the “Combined Loan Parties”) set forth
in the Combined Loan Documents to which it is a party are true and correct on
and as of the date hereof (or, if stated to have been made expressly as of an
earlier date, were true and correct in all material respects as of such date
and, except to the extent waived in writing by the Combined Lenders, the
Required Lenders, the Majority Lenders, the U.S. Lenders or the U.S. Required
Lenders, as applicable).
                     (ii)           Each of the Combined Loan Parties (a) is a
corporation or limited partnership duly incorporated or organized (as
applicable), validly existing and in good standing under the laws of its
jurisdiction of incorporation or organization, (b) has all corporate or limited
partnership power (as applicable) and all material governmental licenses,
authorizations, consents and approvals required to carry on its businesses as
now conducted and as proposed to be conducted, and (c) is duly qualified to
transact business as a foreign corporation or limited partnership in each
jurisdiction where a failure to be so qualified would reasonably be expected to
have a Material Adverse Effect.
                     (iii)           The execution, delivery and performance of
this Amendment and the other Combined Loan Documents by each Combined Loan Party
(to the extent each Combined Loan Party is a party to this Amendment and such
Combined Loan Documents) (a) are within such Combined Loan Party’s corporate or
limited partnership powers, (b) when executed will be duly authorized by all
necessary corporate or limited partnership action, (c) require no action by or
in respect of, or filing with, any Governmental Authority (other than
(1) actions or filings pursuant to the Exchange Act and (2) actions or filings
that have been taken or made and are in full force and effect) and (d) do not
contravene, or constitute a default under, any provision of applicable
Governmental Rule (including, without limitation, Regulation U) or of the
articles or certificate of incorporation, bylaws, regulations, partnership
agreement or comparable charter documents of any Combined Loan Party or of any
agreement, judgment, injunction, order, decree or other instrument binding upon
any Combined Loan Party or result in the creation or imposition of any Lien on
any Borrowing Base Property or Collateral other than the Liens securing the
Combined Obligations.
                     (iv)           This Amendment and each other Combined Loan
Document constitutes, or when executed and delivered will constitute, valid and
binding obligations of each Combined Loan Party which is a party thereto,
enforceable against each such Combined Loan Party which executes the same in
accordance with its terms except as the enforceability thereof may be limited by
(a) bankruptcy, insolvency, reorganization, moratorium, or similar Governmental
Rules affecting creditors’ rights generally, and (b) equitable principles of
general applicability (whether enforcement is sought by proceedings at law or in
equity).

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                     (v)          Neither a Default nor an Event of Default has
occurred and will exist under either Combined Credit Agreement after giving
effect to the transactions contemplated by, and the amendments contained in,
this Amendment or the other Combined Loan Documents.   Neither the U.S. Borrower
or any of its Subsidiaries nor the Canadian Borrower or any of its Subsidiaries
is in default under, nor has any event or circumstance occurred which, but for
the expiration of any applicable grace period or the giving of notice, or both,
would constitute a default under, any Material Agreement to which the U.S.
Borrower or any of its Subsidiaries or the Canadian Borrower or any of its
Subsidiaries is a party or by which the U.S. Borrower or any of its Subsidiaries
or the Canadian Borrower or any of its Subsidiaries is bound which default would
reasonably be expected to have a Material Adverse Effect.   The U.S. Borrower is
in compliance with the financial covenants set forth in Article VI of the U.S.
Credit Agreement.
                     (vi)          No event or events have occurred since
December 31, 2007 which individually or in the aggregate would reasonably be
expected to have a Material Adverse Effect.
          X.          Representations and Warranties of New U.S. Lenders.   Each
New U.S. Lender (i) represents and warrants that (a) it has full power and
authority, and has taken all action necessary, to execute and deliver this
Amendment, to consummate the transactions contemplated hereby and to become a
Lender under the U.S. Credit Agreement, (b) from and after the Effective Date,
it shall be bound by the provisions of the U.S. Credit Agreement as a Lender
thereunder, (c) it has received a copy of the U.S. Credit Agreement, together
with copies of the most recent financial statements delivered pursuant to
Section 5.1 thereof, and such other documents and information as it has deemed
appropriate to make its own credit analysis and decision to enter into this
Amendment and to become a Lender on the basis of which it has made such analysis
and decision independently and without reliance on the Global Administrative
Agent or any other U.S. Lender, and (d) if it is a Foreign Lender, attached
hereto is any documentation required to be delivered by it pursuant to the terms
of the U.S. Credit Agreement, duly completed and executed by the New U.S.
Lender; and (ii) agrees that (a) it will, independently and without reliance on
the Global Administrative Agent or any other U.S. Lender, and based on such
documents and information as it shall deem appropriate at the time, continue to
make its own credit decisions in taking or not taking action under the Loan
Documents, and (b) it will perform in accordance with their terms all of the
obligations which by the terms of the Loan Documents are required to be
performed by it as a Lender.
         XI.          Defined Terms.   Capitalized terms used herein when
defined in the U.S. Credit Agreement (including, to the extent applicable, after
giving effect to this Amendment) shall have the same meanings herein unless the
context otherwise requires.
         XII.         Reaffirmation of Combined Credit Agreements.   This
Amendment shall be deemed to be an amendment to the Combined Credit Agreements,
and the Combined Credit Agreements, as amended hereby, are hereby ratified,
approved and confirmed in each and every respect.   All references to the
Combined Credit Agreements herein and in any other document, instrument,
agreement or writing shall hereafter be deemed to refer to the Combined Credit
Agreements as amended hereby.

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          XIII.          Governing Law.   THIS AMENDMENT SHALL BE CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS.
           NOTWITHSTANDING THE FOREGOING SENTENCE AND AFTER GIVING EFFECT TO THE
TEXTUAL AMENDMENTS CONTAINED IN SECTIONS I, II, III AND IV OF THIS AMENDMENT,
(i) THE U.S. CREDIT AGREEMENT (AS AMENDED HEREBY) SHALL CONTINUE TO BE GOVERNED
BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAW SPECIFIED IN SECTION 10.9(a) OF
THE U.S. CREDIT AGREEMENT, AND (ii) THE CANADIAN CREDIT AGREEMENT (AS AMENDED
HEREBY) SHALL CONTINUE TO BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE
LAW SPECIFIED IN SECTION 10.9(a) OF THE CANADIAN CREDIT AGREEMENT.
          XIV.          Severability of Provisions.   Any provision of this
Amendment held to be invalid, illegal or unenforceable in any jurisdiction
shall, as to such jurisdiction, be ineffective to the extent of such invalidity,
illegality or unenforceability without affecting the validity, legality and
enforceability of the remaining provisions hereof; and the invalidity of a
particular provision in a particular jurisdiction shall not invalidate such
provision in any other jurisdiction.
          XV.            Counterparts.   This Amendment may be executed in
counterparts (and by different parties hereto on different counterparts), each
of which shall constitute an original, but all of which when taken together
shall constitute a single contract.   Delivery of an executed counterpart of a
signature page of this Amendment by telecopy (or other electronic transmission
acceptable to the Global Administrative Agent) shall be effective as delivery of
a manually executed counterpart of this Amendment.
          XVI.          Headings.   Article and Section headings used herein are
for convenience of reference only, are not part of this Amendment and shall not
affect the construction of, or be taken into consideration in interpreting, this
Amendment.
          XVII.        Successors and Assigns.   This Amendment shall be binding
upon and inure to the benefit of the parties hereto and their respective
successors and assigns permitted hereby (including any Affiliate of an Issuing
Bank that issues any Letter of Credit), except that neither the U.S. Borrower
nor the Canadian Borrower may assign or otherwise transfer any of its rights or
obligations hereunder without the prior written consent of the Global
Administrative Agent, each Issuing Bank and each Combined Lender (and any
attempted assignment or transfer by either the U.S. Borrower or the Canadian
Borrower without such consent shall be null and void).
         XVIII.        No Oral Agreements.   THIS AMENDMENT, THE COMBINED CREDIT
AGREEMENTS, AS AMENDED HEREBY, AND THE OTHER COMBINED LOAN DOCUMENTS REPRESENT
THE FINAL AGREEMENT BETWEEN AND AMONG THE PARTIES WITH RESPECT TO THE SUBJECT
MATTER HEREOF AND THEREOF AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES.   THERE ARE NO
UNWRITTEN ORAL AGREEMENTS AMONG THE PARTIES.

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          XIX.          Loan Document.   This Amendment constitutes a “Loan
Document,” a “Canadian Loan Document” and a “Combined Loan Document” under and
as defined in the U.S. Credit Agreement, and a “Loan Document,” a “U.S. Loan
Document” and a “Combined Loan Document” under and as defined in the Canadian
Credit Agreement.
[Signature Pages to Follow]

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          IN WITNESS WHEREOF, the U.S. Borrower, the Canadian Borrower, the
undersigned Combined Lenders, the Global Administrative Agent and the Canadian
Administrative Agent have executed this Amendment as of the date first above
written.

              U.S. BORROWER
 
            QUICKSILVER RESOURCES INC.,
a Delaware corporation, as U.S. Borrower
 
       
 
  By:   /s/ MarLu Hiller    
 
 
      MarLu Hiller, Vice President – Treasurer
 
            CANADIAN BORROWER
 
            QUICKSILVER RESOURCES CANADA INC.,
an Alberta, Canada corporation, as Canadian Borrower
 
       
 
  By:   /s/ MarLu Hiller    
 
 
      MarLu Hiller, Vice President – Treasurer

Each of the undersigned (i) acknowledge, consent and agree to this Amendment and
each of the terms and provisions contained herein, and (ii) agree that the
Combined Loan Documents (as amended hereby) to which it is a party shall remain
in full force and effect and shall continue to be the legal, valid and binding
obligation of such Person, enforceable against it in accordance with its terms.

              ACKNOWLEDGED, CONSENTED AND AGREED TO
as of the date first above written:
 
            COWTOWN GAS PROCESSING L.P.,
a Texas limited partnership
 
       
 
  By:   Cowtown Pipeline Management, Inc.,
its general partner

         
 
  By:   /s/ MarLu Hiller    
 
 
  Name:   MarLu Hiller
 
  Title:   Vice President – Treasurer

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              COWTOWN PIPELINE MANAGEMENT, INC.,
a Texas corporation
 
       
 
  By:   /s/ MarLu Hiller    
 
 
  Name:   MarLu Hiller
 
  Title:   Vice President – Treasurer
 
            COWTOWN PIPELINE FUNDING, INC.,
a Delaware corporation
 
       
 
  By:   /s/ MarLu Hiller    
 
 
  Name:   MarLu Hiller
 
  Title:   Vice President – Treasurer
 
            COWTOWN PIPELINE L.P.,
a Texas limited partnership
 
       
 
  By:   Cowtown Pipeline Management, Inc.,
its general partner

         
 
  By:   /s/ MarLu Hiller    
 
 
  Name:   MarLu Hiller
 
  Title:   Vice President – Treasurer

              QUICKSILVER RESOURCES HORN RIVER INC.,
an Alberta, Canada corporation
 
       
 
  By:   /s/ MarLu Hiller    
 
 
  Name:   MarLu Hiller
 
  Title:   Vice President – Treasurer

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              AGENTS AND COMBINED LENDERS
 
            JPMORGAN CHASE BANK, N.A.,
as Global Administrative Agent and as a U.S. Lender
 
       
 
  By:   /s/ Brian Orlando    
 
 
  Name:   Brian Orlando
 
  Title:   Vice President

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              JPMORGAN CHASE BANK, N.A., TORONTO
BRANCH, as a Canadian Administrative Agent and as a
Canadian Lender
 
       
 
  By:   /s/ Michael N. Tam    
 
 
  Name:    Michael N. Tam    
 
 
  Title:   Senior Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              BANK OF AMERICA, N.A.,
as a U.S. Lender
 
       
 
  By:   /s/ Ronald E. McKaig    
 
 
  Name:   Ronald E. McKaig    
 
 
  Title:   Senior Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              BNP PARIBAS,
as a U.S. Lender
 
       
 
  By:   /s/ Courtney Kubesch    
 
 
  Name:   Courtney Kubesch    
 
 
  Title:   Vice President    
 
 
       
 
  By:   /s/ Polly Schott    
 
 
  Name:   Polly Schott    
 
 
  Title:   Director    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              FORTIS CAPITAL CORP.,     as a U.S. Lender
 
       
 
  By:   /s/ Michele Jones    
 
 
  Name:   Michele Jones    
 
 
  Title:   Director    
 
 
       
 
  By:   /s/ Darrell Holley    
 
 
  Name:   Darrell Holley    
 
 
  Title:   Managing Director    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              THE BANK OF NOVA SCOTIA,
as a U.S. Lender
 
       
 
  By:   /s/ David G. Mills    
 
 
  Name:   David Mills    
 
 
  Title:   Director    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              DEUTSCHE BANK TRUST COMPANY AMERICAS,
as U.S. Lender
 
       
 
  By:   /s/ Dusan Lazarov    
 
 
  Name:   Dusan Lazarov    
 
 
  Title:   Vice President    
 
 
       
 
  By:   /s/ Erin Morrissey    
 
 
  Name:   Erin Morrissey    
 
 
  Title:   Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              THE ROYAL BANK OF SCOTLAND plc,
as a U.S. Lender
 
       
 
  By:   /s/ Lucy Walker    
 
 
  Name:   Lucy Walker    
 
 
  Title:   Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              CALYON NEW YORK BRANCH,
as a U.S. Lender
 
       
 
  By:   /s/ Darrell Stanley    
 
 
  Name:   Darrell Stanley
 
  Title:   Managing Director
 
       
 
  By:   /s/ Sharada Manne    
 
 
  Name:   Sharada Manne
 
  Title:   Director

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              CITIBANK, N.A.,
as a U.S. Lender
 
       
 
  By:   /s/ David E. Hunt    
 
 
  Name:   David E. Hunt    
 
 
  Title:   Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              UNION BANK OF CALIFORNIA, N.A.,
as a U.S. Lender
 
       
 
  By:   /s/ Alison Fuqua    
 
 
  Name:   Alison Fuqua    
 
 
  Title:   Assistant Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              WELLS FARGO BANK, N.A.,
as a U.S. Lender
 
       
 
  By:   /s/ David C. Brooks    
 
 
  Name:   David C. Brooks    
 
 
  Title:   Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              TORONTO DOMINION (TEXAS) LLC,
as a U.S. Lender
 
       
 
  By:   /s/ Debbi L. Brito    
 
 
  Name:   Debbi L. Brito    
 
 
  Title:   Authorized Signatory    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              U.S. BANK NATIONAL ASSOCIATION,
as a U.S. Lender
 
       
 
  By:   /s/ Daria Mahoney    
 
 
  Name:   Daria Mahoney    
 
 
  Title:   Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              SUMITOMO MITSUI BANKING CORPORATION,
as a U.S. Lender
 
       
 
  By:   /s/ William Ginn    
 
 
  Name:   William Ginn    
 
 
  Title:   General Manager    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              COMPASS BANK,
as a U.S. Lender
 
       
 
  By:   /s/ Dorothy Marchand    
 
 
  Name:   Dorothy Marchand    
 
 
  Title:   Senior Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              SOCIÉTÉ GÉNÉRALE,
as a U.S. Lender
 
       
 
  By:   /s/ Stephen W. Warfel    
 
 
  Name:   Stephen W. Warfel
 
  Title:   Managing Director

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              COMERICA BANK,
as a U.S. Lender
 
       
 
  By:   /s/ Rebecca L. Wilson    
 
 
  Name:   Rebecca L. Wilson    
 
 
  Title:   Assistant Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              STERLING BANK,
as a U.S. Lender
 
       
 
  By:   /s/ Melissa A. Bauman    
 
 
  Name:   Melissa A. Bauman    
 
 
  Title:   Senior Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              CIBC INC.,
as a U.S. Lender
 
       
 
  By:   /s/ Dominic J. Sorresso    
 
 
  Name:   Dominic J. Sorresso
 
  Title:   Executive Director
 
            CIBC World Markets Corp.
Authorized Signatory

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              KEYBANK NATIONAL ASSOCIATION,
as a U.S. Lender
 
       
 
  By:   /s/ Todd Coker    
 
 
  Name:   Todd Coker
 
  Title:   Assistant Vice President

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              EXPORT DEVELOPMENT CANADA,
as a U.S. Lender
 
       
 
  By:   /s/ François Morel    
 
 
  Name:   François Morel
 
  Title:   Senior Financing Manager
 
       
 
  By:   /s/ Margaret Michalski    
 
 
  Name:   Margaret Michalski
 
  Title:   Senior Associate

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              BARCLAYS BANK PLC,
as a U.S. Lender
 
       
 
  By:   /s/ Joseph Gyurindak    
 
 
  Name:   Joseph Gyurindak    
 
 
  Title:   Director    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              CREDIT SUISSE, CAYMAN ISLANDS BRANCH,
as a U.S. Lender
 
       
 
  By:   /s/ Vanessa Gomez    
 
 
  Name:
Title:   Vanessa Gomez
Director
 
       
 
  By:   /s/ Nupur Kumar    
 
 
  Name:   Nupur Kumar
 
  Title:   Associate

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              SCOTIABANC INC.,
as a U.S. Lender
 
       
 
  By:   /s/ J.F. Todd    
 
 
  Name:   J.F. Todd    
 
 
  Title:   Managing Director    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              GOLDMAN SACHS BANK USA,
as a U.S. Lender
 
       
 
  By:   /s/ Mark Walton    
 
 
  Name:   Mark Walton
 
  Title:   Authorized Signatory

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              BANK OF AMERICA, N.A. (by its Canada branch),
as a Canadian Lender
 
       
 
  By:   /s/ Medina Sales de Andrade    
 
 
  Name:   Medina Sales de Andrade    
 
 
  Title:   Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              BNP PARIBAS (CANADA),
as a Canadian Lender
 
       
 
  By:   /s/ Chris Rice    
 
 
  Name:   Chris Rice    
 
 
  Title:   Vice President    
 
 
       
 
  By:   /s/ Michael Gosselin    
 
 
  Name:   Michael Gosselin    
 
 
  Title:   Managing Director    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              FORTIS CAPITAL (CANADA) LTD.,
as a Canadian Lender
 
       
 
  By:   /s/ Anil Nayak    
 
 
  Name:   Anil Nayak    
 
 
  Title:   Assistant Vice President    
 
 
       
 
  By:   /s/ Peter Boogers    
 
 
  Name:   Peter Boogers    
 
 
  Title:   Director    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              THE BANK OF NOVA SCOTIA,
as a Canadian Lender
 
       
 
  By:   /s/ Andrew Kellock    
 
 
  Name:   Andrew Kellock    
 
 
  Title:   Director    
 
 
       
 
  By:   /s/ Todd Kennedy    
 
 
  Name:   Todd Kennedy    
 
 
  Title:   Associate    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              DEUTSCHE BANK AG CANADA BRANCH,
as a Canadian Lender
 
       
 
  By:   /s/ David Gynn    
 
 
  Name:
Title:   David Gynn
Chief Financial Officer
 
       
 
  By:   /s/ Marcellus Leung    
 
 
  Name:
Title:   Marcellus Leung
Assistant Vice President

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              CITIBANK, N.A., CANADIAN BRANCH,
as a Canadian Lender
 
       
 
  By:   /s/ Ivan Davey    
 
 
  Name:   Ivan Davey    
 
 
  Title:   Authorised Signer    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              UNION BANK OF CALIFORNIA, CANADA
BRANCH, as a Canadian Lender
 
       
 
  By:   /s/ Phil Taylor    
 
 
  Name:   Phil Taylor
 
  Title:   Senior Vice President

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              WELLS FARGO FINANCIAL CORPORATION
CANADA, as a Canadian Lender
 
       
 
  By:   /s/ Reed W. Ramsey    
 
 
  Name:   Reed W. Ramsey    
 
 
  Title:   Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              THE TORONTO-DOMINION BANK,
as a Canadian Lender
 
       
 
  By:   /s/ Debbi L. Brito    
 
 
  Name:   Debbi L. Brito    
 
 
  Title:   Authorized Signatory    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

--------------------------------------------------------------------------------

 

              U.S. BANK NATIONAL ASSOCIATION,
as a Canadian Lender
 
       
 
  By:   /s/ Susan Atherton    
 
 
  Name:   Susan Atherton    
 
 
  Title:   Vice President and Principal Officer    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              SUMITOMO MITSUI BANKING CORPORATION
OF CANADA, as a Canadian Lender
 
       
 
  By:   /s/ Alfred Lee    
 
 
  Name:   Alfred Lee    
 
 
  Title:   Senior Vice President    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              SOCIÉTÉ GÉNÉRALE (CANADA BRANCH),
as a Canadian Lender
 
       
 
  By:   /s/ David Baldoni    
 
 
  Name:   David BALDONI
 
  Title:   Managing Director
 
       
 
  By:   /s/ Paul Primavesi    
 
 
  Name:   Paul PRIMAVESI
 
  Title:   Vice President

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              COMERICA BANK, a Texas banking association
and authorized foreign bank under the Bank Act
(Canada), as a Canadian Lender
 
       
 
  By:   /s/ Omer Ahmed    
 
 
  Name:   Omer Ahmed    
 
 
  Title:   Portfolio Manager    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

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              CANADIAN IMPERIAL BANK OF COMMERCE,
as a Canadian Lender
 
       
 
  By:   /s/ Randy Geislinger    
 
 
  Name:   Randy Geislinger    
 
 
  Title:   Executive Director    
 
 
       
 
  By:   /s/ Chris Perks    
 
 
  Name:   Chris Perks    
 
 
  Title:   Executive Director    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

--------------------------------------------------------------------------------

 

              KEYBANK NATIONAL ASSOCIATION,
as a Canadian Lender
 
       
 
  By:   /s/ Todd Coker    
 
 
  Name:
Title:   Todd Coker
Assistant Vice President

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

--------------------------------------------------------------------------------

 

              BARCLAYS BANK PLC,
as a Canadian Lender
 
       
 
  By:   /s/ Joseph Gyurindak    
 
 
  Name:   Joseph Gyurindak    
 
 
  Title:   Director    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

 

--------------------------------------------------------------------------------

 

              CREDIT SUISSE, TORONTO BRANCH,
as a Canadian Lender
 
       
 
  By:   /s/ Alain Daoust    
 
 
  Name:   Alain Daoust    
 
 
  Title:   Director    
 
 
       
 
  By:   /s/ Jane Brean    
 
 
  Name:   Jane Brean    
 
 
  Title:   VP    
 

 
[Signature Page]
Sixth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.