8-K

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934

Date of report (Date of earliest event reported): May 28, 2009

QUICKSILVER RESOURCES INC.

(Exact Name of Registrant as Specified in Charter)

Delaware	001-14837	75-2756163
(State or Other Jurisdiction	(Commission	(IRS Employer
of Incorporation)	File Number)	Identification No.)

777 West Rosedale Street
Fort Worth, Texas 76104
(Address of Principal Executive Offices) (Zip Code)

Registrant’s telephone number, including area code: (817) 665-5000

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 1.01. Entry Into a Material Definitive Agreement.

     On May 28, 2009, Quicksilver Resources Inc. (the “Company”) and Quicksilver Resources Canada Inc. (the “Canadian Company”) entered into a combined amendment to its respective amended and restated revolving credit agreement, each dated February 9, 2007, among the Company, the Canadian Company, the U.S. lenders party thereto, the Canadian lenders party thereto, JPMorgan Chase Bank, N.A. as Global Administrative Agent and JPMorgan Chase Bank, N.A., Toronto Branch as Canadian Administrative Agent (the “Combined Revolver Amendment”). On June 17, 2009, the Company entered into an amendment to its term loan credit agreement dated August 8, 2008 (the facility thereunder, the “Term Facility”) among the Company, the lenders party thereto (the “Term Lenders”) and Credit Suisse, as Administrative Agent (the “Term Amendment”, and together with the Combined Revolver Amendment, the “Amendments”).

     The Combined Revolver Amendment provides the Company and the Canadian Company the ability to incur additional indebtedness on terms substantially consistent with the Company’s existing senior notes, which additional indebtedness shall have: (a) an aggregate yield to maturity not to exceed 14%, (b) a maturity date no earlier than 6 years after the date of issuance, (c) an aggregate principal amount not to exceed $600,000,000, and (d) no scheduled amortization of principal; provided that such additional indebtedness must be issued prior to August 1, 2009. The net proceeds of such additional indebtedness shall be applied towards prepayment of the outstanding loans under the Term Facility. Such additional indebtedness shall be secured pari passu with the Company’s existing senior notes and the Term Facility until the Term Facility shall have been repaid in full and the liens securing the Term Facility and the existing senior notes shall have been released. The Term Facility as amended by the Term Amendment also correspondingly permits the Company to incur such additional debt.

     The Amendments also enhance the Company’s financial flexibility by relaxing the Company’s asset coverage covenants through March 31, 2010. As amended, the total debt asset coverage ratio through March 31, 2010 must be no less than 1.30 to 1.00 and the total secured debt asset coverage ratio through March 31, 2010 must be no less than 1.60 to 1.00.

     The Combined Revolver Amendment also restricts the ability of the Company to extend, renew, refinance or replace the existing subordinate debt, the permitted senior notes debt, the permitted 2009 senior notes debt and the second-lien term debt (all as defined therein). The Company shall only be able to renew, extend, refinance or replace the foregoing indebtedness if such refinanced indebtedness shall not result in, among other restrictions described in the Combined Revolver Amendment, (a) an increase in the maximum aggregate principal amount of such indebtedness, except to the extent such increase is for customary fees and expenses, (b) an increase in the rate of interest payable in cash with respect to such indebtedness, (c) a shortening of the average weighted maturity of the indebtedness so extended, refinanced, replaced or renewed and (d) terms less favorable to the obligor thereunder than the terms of such indebtedness in effect immediately prior to such renewal, extension, refinancing or replacement thereof. The Combined Revolver Amendment also amended the debt basket for the loans made under the Term Facility to include the additional indebtedness permitted under the Combined Revolver Amendment and reduced the basket from $700,000,000 to $650,000,000.

     Interest rates for borrowings under the Term Facility after June 30, 2009 were revised (depending on the type of borrowing) from LIBOR plus 4.50% to LIBOR plus 7.00%, subject to an interest rate floor of 3.25% per annum, in the case of Eurodollar rate borrowings, and from alternate base rate plus 3.50% to alternate base rate plus 6.00% per annum, in the case of alternate base rate borrowings, in each case, in addition to any incremental applicable margins applicable thereto. The alternate base rate borrowing was also amended to include a floor of one-month LIBOR plus 1.00%. The Company also agreed to pay to the Term Lenders a duration fee of 0.50% of the aggregate principal amount of the term loans of such Term Lender outstanding as of June 30, 2009. In respect of the Term Amendment, the Company also paid an amendment fee equal to 0.25% of the term loans held by the Term Lenders executing the amendment on June 3, 2009.

     The foregoing summary is not intended to be complete and is qualified in its entirety by the full text of the Combined Revolver Amendment and the Term Amendment, copies of which are attached as Exhibits 10.1 and 10.2 and are incorporated herein by reference.

     Certain of the parties to the Amendments and their respective affiliates have, from time to time, performed, and may in the future perform, various financial, advisory, commercial banking and investment banking services for the Company and the Company’s affiliates in the ordinary course of business for fees and expenses.

Item 9.01. Financial Statements and Exhibits.

     (d) Exhibits.

Exhibit
Number		Description
	10.1	Eighth Amendment to Combined Credit Agreements, dated as of May 28, 2009, among Quicksilver Resources Inc., Quicksilver Resources Canada Inc. and the agents and combined lenders indentified therein.
	10.2	Amendment No. 1 to Credit Agreement, dated as of June 3, 2009, among Quicksilver Resources Inc., the lenders party thereto and Credit Suisse, Cayman Islands Branch, as administrative agent.

SIGNATURE

     Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

QUICKSILVER RESOURCES INC.
By:	/s/ Philip Cook
	Philip Cook
	Senior Vice President — Chief Financial Officer

Date: June 17, 2009

INDEX TO EXHIBITS

Exhibit
Number		Description
	10.1	Eighth Amendment to Combined Credit Agreements, dated as of May 28, 2009, among Quicksilver Resources Inc., Quicksilver Resources Canada Inc. and the agents and combined lenders indentified therein.
	10.2	Amendment No. 1 to Credit Agreement, dated as of June 3, 2009, among Quicksilver Resources Inc., the lenders party thereto and Credit Suisse, Cayman Islands Branch, as administrative agent.

EX-10.1

Exhibit 10.1

EIGHTH AMENDMENT TO COMBINED CREDIT AGREEMENTS

     THIS EIGHTH AMENDMENT TO COMBINED CREDIT AGREEMENTS, dated as of May 28, 2009 (this “Amendment”), 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”), 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 “Consenting 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 U.S. Borrower has advised the Global Administrative Agent, the Canadian Administrative Agent and the Combined Lenders that the U.S. Borrower intends on (a) issuing new senior notes in an aggregate principal amount not to exceed U.S. $600,000,000 (the “Permitted 2009 Senior Notes Debt”), and the U.S. Borrower will use the net cash proceeds thereof, to the extent permitted under the Combined Credit Agreements, solely to prepay the Second-Lien Term Debt, and (b) if the aggregate net cash proceeds from the Permitted 2009 Senior Notes Debt are insufficient to prepay in full the Second-Lien Term Debt, granting junior and subordinate Liens on the Collateral securing the U.S. Obligations in favor of the holders of the Permitted 2009 Senior Notes Debt to secure the Permitted 2009 Senior Notes Debt, which Liens will be, until the Second-Lien Termination Date, equal and ratable with the Liens on the Collateral securing the Second-Lien Term Debt, and, as in the case of such Liens, the Liens on the Collateral securing the Permitted 2009 Senior Notes Debt will terminate on the Second-Lien Termination Date.

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     4. The U.S. Borrower and the Canadian Borrower (collectively, the “Combined Borrowers”) have requested that the Combined Credit Agreements be amended to allow for the issuance of the Permitted 2009 Senior Notes and to amend certain other terms of the Combined Credit Agreements in certain respects as provided in this Amendment.

     5. Subject to and upon the terms and conditions set forth herein, the Combined Lenders have agreed to the Combined Borrowers’ requests.

     NOW, THEREFORE, in consideration of the premises and the mutual covenants herein contained, the parties hereto agree as follows:

     I. Eighth Amendment Effective Date Amendments to 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 V hereof, the U.S. Credit Agreement shall be amended effective as of the Eighth Amendment Effective Date in the manner provided in this Section I:

     A. Amendment to Definition of Change of Control. The definition of “Change of Control” contained in Section 1.1 of the U.S. Credit Agreement shall be amended and restated in full as follows:

     “Change of Control” means the occurrence, after the date hereof, of any of the following events: (a) any Person or “group” (within the meaning of Section 13(d) or 14(d) of the Exchange Act), other than the Darden Group, shall have acquired ownership, directly or indirectly, beneficially or of record, of Equity Interests representing more than 35% of the aggregate ordinary voting power represented by the issued and outstanding Equity Interests of the Borrower, or (b) the occupation of a majority of the seats (other than vacant seats) on the board of directors of the Borrower by Persons who were neither (i) nominated by the board of directors or the stockholders of the Borrower nor (ii) appointed by directors a majority of whom was so nominated, or (c) except as permitted by Section 7.4 and Section 7.5(a), the Borrower shall cease to own, directly or indirectly, 100% of the issued and outstanding Equity Interests of each Guarantor, or (d) during the Second-Lien Period, a “Change of Control” as defined in any Second-Lien Loan Document, or (e) during the period when any Indebtedness under the Existing Convertible Debentures is outstanding, a “Change of Control,” “Change in Control” or similar event as defined in the Existing Convertible Note Indenture, (f) during the period when any Indebtedness under the Existing Subordinate Notes is outstanding, a “Change of Control,” “Change in Control” or similar event as defined in the Existing Subordinate Note Indenture, (g) during the period when any Permitted Senior Notes Debt is outstanding, a “Change of Control,” “Change in Control” or similar event as defined in the Permitted Senior Notes Indenture, or (h) during the period when any Permitted 2009 Senior Notes Debt is outstanding, a “Change of Control,” “Change in Control” or similar event as defined in the Permitted 2009 Senior Notes Indenture but only to the extent, in the case of clauses (e), (f) (g), and (h), the occurrence of any such event gives rise to an obligation of the Borrower or any other Loan Party to redeem, repay or

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repurchase, or otherwise offer to redeem, repay or repurchase, all or any portion of the Permitted 2009 Senior Notes Debt, the Permitted Senior Notes Debt or Existing Subordinate Debt which is not otherwise permitted by the terms of this Agreement.

     B. Amendment to Definition of Collateral. The definition of “Collateral” contained in Section 1.1 of the U.S. Credit Agreement shall be amended and restated in full as follows:

     “Collateral” means, collectively, (a) any and all “Collateral” and “Mortgaged Property”, as defined in the Security Documents and the Canadian Security Documents, and (b) during the Second-Lien Period, the term “Collateral” shall also include any other Property of the Borrower or any of its Subsidiaries upon which a Lien has been granted (or is required to be granted) pursuant to the Second-Lien Loan Documents, the Permitted Senior Notes Documents or the Permitted 2009 Senior Notes Documents to secure the Second-Lien Term Debt, the Permitted Senior Notes Debt or the Permitted 2009 Senior Notes Debt, as applicable, in the case of this clause (b), to the extent the Borrower and/or any of its Subsidiaries were not otherwise required to grant Liens in such Property in accordance with the Combined Loan Documents in effect immediately prior to the effectiveness of the Eighth Amendment.

     C. Amendment to Definition of Guarantor. The definition of “Guarantor” contained in Section 1.1 of the U.S. Credit Agreement shall be amended and restated in full as follows:

     “Guarantor” means each Material Subsidiary listed on Exhibit L (except QR Canada and Foreign Subsidiaries) under the heading “Material Subsidiaries,” (b) each Subsidiary that is required to execute a Guaranty pursuant to Section 5.15, (c) each other Subsidiary that Guarantees or is required to Guarantee the Permitted Senior Notes Debt, (d) each other Subsidiary that Guarantees or is required to Guarantee the Permitted 2009 Senior Notes Debt, and (e) each other Subsidiary that Guarantees or is required to Guarantee the Second-Lien Term Debt.

     D. Amendment to Definition of Permitted Encumbrances. Clause (t) of the definition of “Permitted Encumbrances” contained in Section 1.1 of the U.S. Credit Agreement shall be amended and restated in full as follows:

     “(t) during the Second-Lien Period only, Liens in favor of the Second-Lien Term Lenders, the Second-Lien Administrative Agent, the trustee under any Mortgage, the trustee under the Permitted Senior Notes Indenture, the holders of the Permitted Senior Notes, the trustee under the Permitted 2009 Senior Notes Indenture and/or the holders of the Permitted 2009 Senior Notes to secure all or any portion of the Second-Lien Term Debt, the Permitted Senior Notes Debt, the Permitted 2009 Senior Notes Debt and any Guarantees by any Subsidiaries of any thereof, and any other obligations under the Second-Lien Loan Documents, the

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Permitted Senior Notes Documents, and the Permitted 2009 Senior Notes Documents, which Liens are junior, subordinate and inferior to the Liens created by the Security Documents as provided in the Second-Lien Intercreditor Agreement; or”

     E. Amendment to Definition of Second-Lien Credit Agreement. The definition of “Second-Lien Credit Agreement” contained in Section 1.1 of the U.S. Credit Agreement shall be amended and restated in full as follows:

     “Second-Lien Credit Agreement” means the Credit Agreement entered into as of the Subject Acquisition Closing Date among the Borrower, the Second-Lien Term Lenders party thereto, the Second-Lien Administrative Agent and the other agents and arrangers party thereto, as may be amended, restated, renewed, extended, supplemented, replaced or otherwise modified from time to time to the extent permitted hereunder, under such Second-Lien Credit Agreement and under the Second-Lien Intercreditor Agreement; provided, that, for the avoidance of doubt, the Permitted 2009 Senior Notes Indenture and the other Permitted 2009 Senior Notes Documents shall not be considered an amendment, restatement, renewal, extension, supplement, replacement or other modification of the Second-Lien Credit Agreement for purposes of this Agreement or any other Loan Document.

     F. Amendment to Definition of Second-Lien Term Debt. The definition of “Second-Lien Term Debt” contained in Section 1.1 of the U.S. Credit Agreement shall be amended and restated in full as follows:

     “Second-Lien Term Debt” means the Indebtedness of the Borrower outstanding from time to time under the Second-Lien Credit Agreement (including Guarantees thereof by Subsidiaries), including all renewals, refinancings, replacements and extensions thereof to the extent permitted hereunder and under the Second-Lien Intercreditor Agreement and made in accordance with the terms of the Combined Loan Documents (including Section 7.14); provided, that, for the avoidance of doubt, the Permitted 2009 Senior Notes Debt shall not be considered a renewal, refinancing, replacement or extension of the Second-Lien Term Debt for purposes of this Agreement or any other Loan Document.

     G. Amendment to Definition of Second-Lien Termination Date. Clause (c) of the definition of “Second-Lien Termination Date” contained in Section 1.1 of the U.S. Credit Agreement shall be amended and restated in full as follows:

     “(c) all Liens securing the Second-Lien Term Debt, the Permitted Senior Notes Debt, and the Permitted 2009 Senior Notes Debt have been released or terminated.”

     H. Additional Definitions. Section 1.1 of the U.S. Credit Agreement shall be amended by inserting the following definitions in appropriate alphabetical order:

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     “Eighth Amendment” means that certain Eighth Amendment to Combined Credit Agreements dated as of May 28, 2009, by and among the Borrower, the Canadian Borrower, the Global Administrative Agent, the Canadian Administrative Agent and the Combined Lenders party thereto.

     “Eighth Amendment Effective Date” has the meaning given to the term “Eighth Amendment Effective Date” in the Eighth Amendment.

     “Permitted 2009 Senior Notes” means, collectively, each of the notes issued by the Borrower on or after May 28, 2009 pursuant to the Permitted 2009 Senior Notes Indenture, as such notes may be amended, restated, renewed, extended, supplemented, replaced or otherwise modified from time to time to the extent permitted hereunder and under the Permitted 2009 Senior Notes Indenture.

     “Permitted 2009 Senior Notes Debt” means the Indebtedness (in addition to, and not including, Existing Subordinate Debt and Permitted Senior Notes Debt) of the Borrower outstanding from time to time under the Permitted 2009 Senior Notes Documents (including Guarantees thereof by Subsidiaries), including all renewals, refinancings, replacements, and extensions thereof to the extent permitted hereunder and made in accordance with the terms of the Combined Loan Documents (including Section 7.14), which Indebtedness shall be on terms (but not necessarily economic terms) substantially consistent with the Permitted Senior Notes Indenture and which Indebtedness otherwise satisfies each of the following criteria: (a) an aggregate yield to maturity not to exceed 14%, (b) a maturity date no earlier than 6 years after the date of issuance, (c) an aggregate principal amount not to exceed $600,000,000, and (d) no scheduled amortization of principal; provided, that, such Indebtedness is issued prior to August 1, 2009; provided, further, that, after the Second-Lien Period, all such Indebtedness shall be unsecured.

     “Permitted 2009 Senior Notes Documents” means the Permitted 2009 Senior Notes, the Permitted 2009 Senior Notes Indenture, and all promissory notes, guarantees, security agreements, pledge agreements, mortgages, deeds of trust and other documents, instruments and agreements executed and delivered pursuant to or in connection with the Permitted 2009 Senior Notes Indenture evidencing, guaranteeing, securing or otherwise pertaining to the Permitted 2009 Senior Notes Debt.

     “Permitted 2009 Senior Notes Indenture” means that certain Indenture dated as of December 22, 2005, between the Borrower and The Bank of New York Mellon Trust Company, N.A. (as successor by merger), as trustee, and any successor trustees, as supplemented by a certain supplemental indenture, between the Borrower and a financial institution serving as trustee thereunder, having terms (but not necessarily economic terms) substantially consistent with the Permitted Senior Notes Indenture and which otherwise satisfies each of the following criteria: (a) an aggregate yield to maturity not to exceed 14%, (b) a maturity date no earlier than 6 years after the date of issuance, (c) an aggregate

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principal amount not to exceed $600,000,000, and (d) no scheduled amortization, as the same may be amended, restated, renewed, extended, supplemented, replaced or otherwise modified from time to time to the extent permitted hereunder and under such Permitted 2009 Senior Notes Indenture.

     I. Amendment to Loan Party and Governmental Authorization; Contravention Provision. Section 3.2 of the U.S. Credit Agreement shall be amended in its entirety to read as follows:

     “SECTION 3.2 Loan Party and Governmental Authorization; Contravention. The execution, delivery and performance of this Agreement and the other Loan Documents by each Loan Party (to the extent each Loan Party is a party to this Agreement and such Loan Documents) (a) are within such Loan Party’s corporate, partnership or limited liability company powers, (b) when executed will be duly authorized by all necessary corporate, partnership or limited liability company action, (c) require no action by or in respect of, or filing with, any Governmental Authority (other than (i) actions or filings pursuant to the Exchange Act, (ii) actions or filings necessary to create or perfect the Liens required hereby or by any other Combined Loan Document, (iii) actions or filings that have been taken or made and are in full force and effect, and (iv) actions or filings which, if not taken or made, would not reasonably be expected to have a Material Adverse Effect) and (d) do not (i) contravene, or constitute a default under, any provision of (A) applicable Governmental Rule (including, without limitation, Regulation U), except any contravention or default that would not reasonably be expected to have a Material Adverse Effect, (B) the articles or certificate of incorporation, bylaws, regulations, partnership agreement or comparable charter documents of any Loan Party, or (C) any agreement, judgment, injunction, order, decree or other instrument binding upon any Loan Party, including, without limitation, any Existing Subordinate Note Document, any Permitted Senior Notes Document, any Permitted 2009 Senior Notes Document or any Second-Lien Loan Document, except any contravention or default that would not reasonably be expected to have a Material Adverse Effect and, with respect to the Existing Convertible Debentures and Existing Convertible Note Indenture, assuming that any repurchase of the Existing Convertible Debentures pursuant to Section 3.06 of the Existing Convertible Note Indenture, and that any payment of the Existing Subordinate Notes, is made (1) at a time at which immediately before and after giving effect to such repurchase no Default, Event of Default, Global Borrowing Base Deficiency, U.S. Borrowing Base Deficiency or Global Availability Deficiency has occurred and is continuing or results therefrom, (2) with the proceeds from the sale of shares of common stock of the Borrower, or (3) in compliance with the last sentence of Section 7.14, or (ii) result in the creation or imposition of any Lien on any Borrowing Base Property or Collateral other than the Liens securing the Combined Obligations.”

     J. Amendment to Information Covenant. Clause (m) of Section 5.1 of the U.S. Credit Agreement shall be amended and restated in full as follows:

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     “(m) Promptly, but in no event later than five (5) Business Days following the issuance or incurrence of any Permitted 2009 Senior Notes Debt, or any extension, renewal, refinancing or replacement of any Existing Subordinate Debt, Permitted Senior Notes Debt, Permitted 2009 Senior Notes Debt or Second-Lien Term Debt, notice to the Global Administrative Agent of such issuance, incurrence, extension, renewal, refinancing or replacement, together with true, correct and complete copies of each material Permitted 2009 Senior Notes Document, or any such extension, renewal, refinancing or replacement of any Existing Subordinate Debt, Permitted Senior Notes Debt, Permitted 2009 Senior Notes Debt or Second-Lien Term Debt, requested by the Global Administrative Agent. In connection and together with the notice required by this clause (m) as a result of the issuance or incurrence of any Permitted 2009 Senior Notes Debt, the Borrower shall promptly, but in no event later than five (5) Business Days following the issuance or incurrence of such Permitted 2009 Senior Notes Debt, deliver to the Global Administrative Agent copies of the material Permitted 2009 Senior Notes Documents, which material Permitted 2009 Senior Notes Documents shall be certified by the Borrower as true, correct and complete.”

     K. Amendment to Further Assurances Covenant. Clause (g) of Section 5.17 of the U.S. Credit Agreement shall be amended and restated in full as follows:

     “(g) Notwithstanding any other provision contained herein, in the event that the Second-Lien Credit Agreement or any other Second-Lien Loan Document contain any covenant of the type that would customarily be included in the affirmative covenants, negative covenants or financial covenants sections of a loan document (other than Sections 7.07 and 7.13 of the Second-Lien Credit Agreement in effect on the Eighth Amendment Effective Date), in each case, taken as a whole after giving effect to all differences in definitions that are directly or indirectly used therein, that is either more restrictive than the corresponding covenant contained herein taken as a whole or not comparable to, or new or different from, any covenant contained herein, this Agreement shall be deemed to have been amended, if and only for so long as the Second-Lien Period is in effect, to incorporate such covenant, mutatis mutandis, into Article V, VI or VII hereof, as applicable, in replacement of the applicable corresponding covenant in this Agreement or, if no such corresponding covenant exists, as a new covenant in any such Article (as such covenant may be amended or waived from time to time under the Second-Lien Credit Agreement). In connection with the foregoing, the parties hereto further agree to execute any amendment or consent documentation the sole purpose of which is to implement conforming amendments and modifications to this Agreement and/or any other Loan Document as the Global Administrative Agent determines to be appropriate and necessary in its reasonable discretion to effectuate the intent of the foregoing sentence.”

     L. Use of Permitted 2009 Senior Notes Debt Net Proceeds Covenant. Article V of the U.S. Credit Agreement shall be amended to add the new Section 5.19 at the end thereof which shall read in full as follows:

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     “SECTION 5.19 Use of Permitted 2009 Senior Notes Debt Net Proceeds. Subject to Section 7.14 and any other restrictions set forth herein, including without limitation no Default, Event of Default, Global Borrowing Base Deficiency, U.S. Borrowing Base Deficiency or Global Availability Deficiency exists and is continuing or results therefrom as and to the extent such limitations apply to the prepayment of the Second-Lien Term Debt as set forth in Section 7.14, the U.S. Borrower shall use net cash proceeds from the issuance of the Permitted 2009 Senior Notes Debt solely to prepay the Second-Lien Term Debt until repaid in full.”

     M. Amendment to Incurrence of Debt Covenant. Clause (r) of Section 7.1 of the U.S. Credit Agreement shall be amended and restated in full as follows:

     “(r) the Second-Lien Term Debt and the Permitted 2009 Senior Notes Debt; provided, however, that the aggregate principal amount of the Second-Lien Term Debt and the Permitted 2009 Senior Notes Debt does not exceed U.S. $650,000,000;”

and (ii) revising the proviso following subsection (r) thereof to read in full as follows:

     “provided, that, the Borrower may not incur new Indebtedness (other than (i) the renewal, extension, refinancing or replacement of the Existing Subordinate Debt, the Permitted Senior Notes Debt, the Permitted 2009 Senior Notes Debt or the Second-Lien Term Debt; provided, that any such renewal, extension, refinancing or replacement of any such Indebtedness shall not result in (A) an increase in the maximum aggregate principal amount of such Indebtedness, except to the extent such increase is in the amount of customary fees and expenses incurred by the Borrower or any other Loan Party in connection with any such renewal, extension, refinancing or replacement, (B) an increase in the rate of interest payable in cash with respect to such Indebtedness, (C) any Liens securing such Indebtedness being extended to any additional property of any Loan Party, except in accordance with the documentation relating to such Indebtedness in effect immediately prior to such renewal, extension, refinancing or replacement, (D) any Loan Party that is not obligated with respect to repayment of such Indebtedness immediately prior to such renewal, extension, refinancing or replacement thereof being required to become obligated with respect thereto, except in accordance with the documentation relating to such Indebtedness in effect immediately prior to such renewal, extension, refinancing or replacement, (E) a shortening of the average weighted maturity of the Indebtedness so extended, refinanced, replaced or renewed, (F) terms less favorable to the obligor thereunder than the terms of such Indebtedness in effect immediately prior to such renewal, extension, refinancing or replacement thereof and (G) if such Indebtedness that is renewed, extended, refinanced or replaced was subordinated in right of payment to the Obligations, subordination terms and conditions that are less favorable to the Global Administrative Agent and the Lenders as those that were applicable to the renewed, extended, refinanced or replaced Indebtedness, and (ii) Guarantees by any Subsidiaries thereof to the extent the same is incurred

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in accordance with Section 7.14) described in clauses (f), (i), (j), (o) and (r) above at any time that a Default, Event of Default, Global Borrowing Base Deficiency or U.S. Borrowing Base Deficiency has occurred and is continuing.”

     N. Amendment to Asset Dispositions Covenant. Clauses (i) and (ii) of Section 7.5(b) of the U.S. Credit Agreement shall be amended in their entirety to read as follows:

     “(i) the prior or contemporaneous release of any other Liens covering the assets, including, without limitation, any Liens in favor of the Second-Lien Term Lenders, the Second-Lien Administrative Agent, the trustee under any Mortgage, the trustee under the Permitted Senior Notes Indenture, the holders of the Permitted Senior Notes, the trustee under the Permitted 2009 Senior Notes Indenture and/or the holders of the Permitted 2009 Senior Notes securing the Second-Lien Term Debt, the Permitted Senior Notes Debt, and/or the Permitted 2009 Senior Notes Debt, and (ii) the written request from an Authorized Officer of the Borrower which specifically identifies the subject assets and certifies that such disposition complies with the terms of this Section 7.5 (including the release of any other Liens covering the assets, including, without limitation, any Liens in favor of the Second-Lien Term Lenders, the Second-Lien Administrative Agent, the trustee under any Mortgage, the trustee under the Permitted Senior Notes Indenture, the holders of the Permitted Senior Notes, the trustee under the Permitted 2009 Senior Notes Indenture and/or the holders of the Permitted 2009 Senior Notes).”

     O. Amendment to Amendments to Organizational Documents; Other Material Agreements Covenant. Section 7.6 of the U.S. Credit Agreement shall be amended in its entirety to read as follows:

     “SECTION 7.6 Amendments to Organizational Documents; Other Material Agreements. The Borrower will not, nor will the Borrower permit any other Loan Party to, enter into or permit any modification or amendment of, or waive any material right or obligations of any Person under, (a) its Organic Documents (other than amendments, modifications and waivers which would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect), (b) the Existing Subordinate Note Documents, (c) the Permitted Senior Notes Documents, (d) the Permitted 2009 Senior Notes Documents, and (e) the Second-Lien Loan Documents; provided, that the Borrower may enter into or obtain amendments, modifications or waivers to or under any of the Existing Subordinate Note Documents, the Permitted Senior Notes Documents, the Permitted 2009 Senior Notes Documents or the Second-Lien Loan Documents which do not provide for or have any of the following effects: (i) cause (A) the outstanding principal balance of the Existing Subordinate Debt to exceed U.S. $500,000,000 at any time, (B) the outstanding principal balance of the Permitted Senior Notes Debt to exceed U.S. $500,000,000 at any time, and (C) the outstanding aggregate principal balance of the Permitted 2009 Senior Notes Debt and the Second-Lien Term Debt to exceed U.S. $650,000,000 at any time (in each case, as reduced by any principal payments, prepayments or redemptions to the

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extent permitted (or not prohibited) by Section 7.14 hereof or any other principal payments hereafter made with the express written consent of the Majority Lenders); (ii) increase the amount of any scheduled payment of principal or interest on the Existing Subordinate Debt, Permitted Senior Notes Debt, Permitted 2009 Senior Notes Debt or Second-Lien Term Debt; (iii) hasten or accelerate the date upon which any installment of principal or interest of any Existing Subordinate Debt, any Permitted Senior Notes Debt, any Permitted 2009 Senior Notes Debt or any Second-Lien Term Debt is due or otherwise accelerate the amortization schedule with respect to such Existing Subordinate Debt, Permitted Senior Notes Debt, Permitted 2009 Senior Notes Debt or Second-Lien Term Debt; (iv) increase the rate of interest payable in cash accruing on the Existing Subordinate Debt, Permitted Senior Notes Debt, Permitted 2009 Senior Notes Debt or Second-Lien Term Debt (other than (x) any increase to the coupon rate (i.e., the stated rate of interest) on the Permitted Senior Notes not in excess of 9% per annum, (y) an increase to the “Default Rate” (or comparable term) in the circumstances provided for in the Existing Subordinate Note Documents, the Permitted Senior Notes Documents, the Permitted 2009 Senior Notes Documents or the Second-Lien Loan Documents, as applicable, or impose any additional premium or penalty in connection with the prepayment or late payment of the Existing Subordinate Debt, Permitted Senior Notes Debt, Permitted 2009 Senior Notes Debt or Second-Lien Term Debt, or (z) an increase in the interest rate on the Second-Lien Term Debt as and to the extent permitted by the Second-Lien Intercreditor Agreement); (v) subject to the last proviso of this Section 7.6, provide for the payment of additional fees, or for any increase in existing fees, in connection with the Existing Subordinate Debt, Permitted Senior Notes Debt, Permitted 2009 Senior Notes Debt or Second-Lien Term Debt; or (vi) amend or modify any covenant, obligation or default of the Borrower or any applicable Subsidiary contained in the Existing Subordinate Note Documents, Permitted Senior Notes Documents, Permitted 2009 Senior Notes Documents or the Second-Lien Loan Documents (including, without limitation, financial ratios) in a manner which makes such covenants, obligations or defaults materially more restrictive or onerous than those contained in, (1) in the case of the applicable Existing Subordinate Note Documents, the Existing Subordinate Note Documents as in effect on the Global Effective Date or in the Combined Credit Agreements as then in effect, (2) in the case of the Permitted Senior Notes Documents, the Permitted Senior Notes Documents as in effect on the date the Permitted Senior Notes Debt was issued and such documents were first entered into by the Borrower or applicable Subsidiary thereof (without giving effect to any subsequent amendment or modification) other than the Sixth Supplemental Indenture dated as of July 10, 2008, or in the Combined Credit Agreements as then in effect, (3) in the case of the Permitted 2009 Senior Notes Documents, the Permitted 2009 Senior Notes Documents as in effect on the date the Permitted 2009 Senior Notes Debt is issued and such documents were first entered into by the Borrower or applicable Subsidiary thereof (without giving effect to any subsequent amendment or modification) or in the Combined Credit Agreements as then in effect, or (4) in the case of the Second-Lien Loan Documents, the Second-Lien

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Loan Documents as in effect on the Subject Acquisition Closing Date or in the Combined Credit Agreements as then in effect, provided, that the Borrower may enter into or obtain amendments or modifications under the Second-Lien Loan Documents which are expressly permitted by the terms of the Second-Lien Intercreditor Agreement; provided, however, that, notwithstanding the foregoing or anything else to the contrary contained in any Combined Loan Document, any agent, any trustee and any holder of Existing Subordinate Debt, any holder of Permitted Senior Notes, any holder of Permitted 2009 Senior Notes or any Second-Lien Term Lender shall be entitled to receive fees for amendments (to the extent such amendments are permitted hereby), providing consents, waiving defaults or granting forbearances (but solely to the extent such fees are customary, do not exceed market rates and are permitted by the Existing Subordinate Note Documents, the Permitted Senior Notes Documents, the Permitted 2009 Senior Notes Documents and the Second-Lien Loan Documents or otherwise approved by the Global Administrative Agent), and to the reimbursement of any reasonable out-of-pocket expenses (including fees and expenses of attorneys, appraisers, consultants and advisors) relating thereto in accordance with the terms of the Existing Subordinate Note Documents, the Permitted Senior Notes Documents, the Permitted 2009 Senior Notes Documents and the Second-Lien Loan Documents, respectively.”

     P. Amendment to Existing Subordinated Debt, Permitted Senior Notes Debt, Second-Lien Term Debt and Falcon Seaboard Settlement Agreement Covenant. Section 7.14 of the U.S. Credit Agreement shall be amended in its entirety to read as follows:

     “SECTION 7.14 Existing Subordinate Debt, Permitted Senior Notes Debt, Permitted 2009 Senior Notes Debt, Second-Lien Term Debt and Falcon Seaboard Settlement Agreement. In addition to the other restrictions contained in this Article VII, the Borrower will not, nor will the Borrower permit any other Loan Party to, directly or indirectly, (a) make any payment of principal or any other item of any Existing Subordinate Debt (other than accrued interest thereon and reasonable fees and expenses incurred in accordance with the terms thereof and Restricted Payments made with respect to any Existing Subordinate Debt in accordance with Section 7.2 to repurchase fractional shares of the Borrower’s Equity Interests that arise or result from the conversion of any such Existing Subordinate Debt) or payment in respect of the purchase, repurchase, redemption or defeasance of principal or such other item of Existing Subordinate Debt (other than accrued interest thereon and reasonable fees and expenses incurred in accordance with the terms thereof and Restricted Payments made with respect to any Existing Subordinate Debt in accordance with Section 7.2 to repurchase fractional shares of the Borrower’s Equity Interests that arise or result from the conversion of any such Existing Subordinate Debt) at any time prior to the earlier of (i) the termination of all Commitments and Canadian Commitments, the payment and performance in full of the Combined Obligations, the termination or expiration of all Letters of Credit and the “Letters of Credit” (as defined in the Canadian Credit Agreement), and the termination or payment of all “Bankers’ Acceptances” (as defined in the Canadian Credit Agreement) and (ii) the

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scheduled maturity of such Existing Subordinate Debt; (b) make any prepayment of interest on any Existing Subordinate Debt prior to the time that such interest is due except as expressly permitted by the terms hereof and by the terms of the documentation evidencing or governing such Existing Subordinate Debt; (c) permit (x) the outstanding principal balance of all Existing Subordinate Debt to exceed U.S. $500,000,000 at any time, (y) the outstanding principal balance of all Permitted Senior Notes Debt to exceed U.S. $500,000,000 at any time, and (z) the outstanding aggregate principal balance of the Second-Lien Term Debt and the Permitted 2009 Senior Notes Debt to exceed U.S. $650,000,000 at any time (in each case, as reduced by any principal payments, prepayments or redemptions to the extent permitted (or not prohibited) by this Section 7.14 or any other principal payments hereafter made with the express written consent of the Majority Lenders); (d) make any delivery on or with respect to the Falcon Seaboard Settlement Agreement, except as expressly permitted by the terms of the Falcon Seaboard Settlement Agreement; or (e) make any optional or voluntary payment or prepayment of principal, interest or any other item of any Second-Lien Term Debt, Permitted Senior Notes Debt or Permitted 2009 Senior Notes Debt, or any optional or voluntary payment in respect of the purchase, repurchase, redemption or defeasance of principal, interest or other item of such Second Lien Term Debt, Permitted Senior Notes Debt or Permitted 2009 Senior Notes Debt, at any time prior to the earlier of (i) the termination of all Commitments and Canadian Commitments, the payment and performance in full of the Combined Obligations, the termination or expiration of all Letters of Credit and the “Letters of Credit” (as defined in the Canadian Credit Agreement), and the termination or payment of all “Bankers’ Acceptances” (as defined in the Canadian Credit Agreement) and (ii) the scheduled maturity of such Second Lien Term Debt, Permitted Senior Notes Debt or Permitted 2009 Senior Notes Debt, as applicable; provided, however, that, the Borrower and/or any Subsidiaries may (x) deliver gas volumes at any time and from time to time prior to the stated delivery date thereof by Borrower or any Affiliate of Borrower, or settle in cash at any time and from time to time the Borrower’s obligations, under the Falcon Seaboard Settlement Agreement, (y) prepay or pay, or purchase, repurchase, redeem or defease, at any time and from time to time all or a portion of the principal of, and interest on and any other item payable with respect to, the Existing Subordinate Debt, prior to the applicable scheduled maturity thereof, and may pay, purchase, repurchase, redeem or defease the Existing Subordinate Debt on or after the applicable maturity date therefor, and (z) may optionally or voluntarily prepay, pay, purchase, repurchase, redeem or defease at any time and from time to time all or any portion of the principal of, and interest on and any other item payable with respect to, any of the Permitted Senior Notes Debt, the Permitted 2009 Senior Notes Debt and/or the Second-Lien Term Debt prior to the applicable scheduled maturity date thereof, and may pay, purchase, repurchase, redeem or defease the Permitted Senior Notes Debt, the Permitted 2009 Senior Notes Debt and/or the Second Lien Term Debt after the applicable maturity date therefor, in the case of each of clauses (x), (y) and (z), (i) so long as, and only so long as, both immediately before and after giving effect to such prepayment, payment, purchase, repurchase, redemption or defeasance, no

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Default, Event of Default, Global Borrowing Base Deficiency, U.S. Borrowing Base Deficiency or Global Availability Deficiency exists and is continuing or results therefrom, or (ii) if and to the extent such prepayment, payment, purchase, repurchase, redemption or defeasance is made with shares of common stock of the Borrower and/or the proceeds from the sale or issuance of the common stock of the Borrower. Notwithstanding anything to the contrary contained in any Combined Loan Document, the Borrower shall be permitted to (A) extend, renew, refinance or replace the Existing Subordinate Debt, the Permitted Senior Notes Debt, the Permitted 2009 Senior Notes Debt and/or the Second-Lien Term Debt at any time so long as the final maturity date of any such extension, renewal, refinancing or replacement is no earlier than six (6) months after the Maturity Date and the Borrower is in compliance with the terms and conditions set forth in Sections 7.1 and 7.6 and, prior to the Second-Lien Termination Date, the Second-Lien Intercreditor Agreement and/or (B) repay, prepay, purchase, repurchase, redeem, or defease any of the Existing Subordinate Debt, the Permitted Senior Notes Debt, the Permitted 2009 Senior Notes Debt and/or the Second-Lien Term Debt using (i) proceeds of the issuance of common stock of the Borrower or (ii) shares of common stock of the Borrower.”

     Q. Amendment to Listing of Events of Default Provision. Section 8.1 of the U.S. Credit Agreement shall be amended by restating subsections (n) and (q) thereof in their entirety to read as follows:

     “(n) a “Default” or “Event of Default” under, and as each such term is defined in, each material Existing Subordinate Note Document, including, without limitation, the Existing Subordinate Note Indenture and the Existing Convertible Note Indenture, each material Permitted Senior Notes Document, each material Permitted 2009 Senior Notes Document and each material Second-Lien Loan Document, shall occur and be continuing;”

     “(q) (i) the Liens securing the Second-Lien Term Debt, the Permitted Senior Notes Debt, the Permitted 2009 Senior Notes Debt and/or any Guarantees thereof shall cease, for any reason, to be, or shall be asserted by any Loan Party, any Second-Lien Term Lender, the Second-Lien Administrative Agent, the trustee under the Permitted Senior Notes Indenture, any holder of any Permitted Senior Notes Debt, the trustee under the Permitted 2009 Senior Notes Indenture or any holder of any Permitted 2009 Senior Notes Debt not to be, validly subordinated to the Liens securing the Combined Obligations to the extent provided or required by the Second-Lien Intercreditor Agreement or (ii) the Liens securing the Combined Obligations and the Combined Obligations themselves shall cease to constitute, or shall be asserted by any Loan Party, any Second-Lien Term Lender, the Second-Lien Administrative Agent, the trustee under the Permitted Senior Notes, any holder of any Permitted Senior Notes Debt, the trustee under the Permitted 2009 Senior Notes or any holder of any Permitted 2009 Senior Notes Debt not to constitute, “First Priority Liens” or “First Lien Obligations” (or any comparable terms), respectively, under and to the extent required by the Second-Lien Intercreditor Agreement.”

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     II. Eighth Amendment Effective Date Amendments to 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 V hereof, the Canadian Credit Agreement shall be amended effective as of the Eighth Amendment Effective Date in the manner provided in this Section II:

     A. Amendment to Definition of Guarantor. The definition of “Guarantor” contained in Section 1.1 of the Canadian Credit Agreement shall be amended and restated in full as follows:

     “Guarantor” means collectively (i) the Parent, (ii) Canadian Newco, (iii) each Material Subsidiary, (iv) each U.S. Material Subsidiary that now or hereafter executes and delivers a U.S. Material Subsidiary Guaranty, including each Material Subsidiary and U.S. Material Subsidiary that is required to execute a Guaranty pursuant to Section 5.9, (v) each other Subsidiary of the Parent that Guarantees or is required to Guarantee the Permitted Senior Notes Debt, (vi) each other Subsidiary of the Parent that Guarantees or is required to Guarantee the Permitted 2009 Senior Notes Debt, and (vii) each other Subsidiary of the Parent that Guarantees or is required to Guarantee the Second-Lien Term Debt.

     B. Amendment to Definition of Permitted Encumbrances. Clause (t) of the definition of “Permitted Encumbrances” contained in Section 1.1 of the Canadian Credit Agreement shall be amended and restated in full as follows:

     “(t) during the Second-Lien Period only, Liens in favor of the Second-Lien Term Lenders, the Second-Lien Administrative Agent, the trustee under any Mortgage, the trustee under the Permitted Senior Notes Indenture, the holders of the Permitted Senior Notes, the trustee under the Permitted 2009 Senior Notes Indenture and/or the holders of the Permitted 2009 Senior Notes to secure all or any portion of the Second-Lien Term Debt, the Permitted Senior Notes Debt, the Permitted 2009 Senior Notes Debt and any Guarantees by any Subsidiaries of the Parent thereof, and any other obligations under the Second-Lien Loan Documents, the Permitted Senior Notes Documents, and the Permitted 2009 Senior Notes Documents, which Liens are junior, subordinate and inferior to the Liens created by the Security Documents as provided in the Second-Lien Intercreditor Agreement; or”

     C. Amendment to Definition of Second-Lien Credit Agreement. The definition of “Second-Lien Credit Agreement” contained in Section 1.1 of the Canadian Credit Agreement shall be amended and restated in full as follows:

     “Second-Lien Credit Agreement” means the Credit Agreement entered into as of the Subject Acquisition Closing Date, among the Parent, the Second-Lien Term Lenders party thereto, the Second-Lien Administrative Agent and the other agents and arrangers party thereto, as may be amended, restated, renewed, extended, supplemented, replaced or otherwise modified from time to time to the extent permitted under the U.S. Credit Agreement, under such Second-Lien Credit

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Agreement and under the Second-Lien Intercreditor Agreement; provided, that, for the avoidance of doubt, the Permitted 2009 Senior Notes Indenture and the other Permitted 2009 Senior Notes Documents shall not be considered an amendment, restatement, renewal, extension, supplement, replacement or other modification of the Second-Lien Credit Agreement for purposes of this Agreement or any other Loan Document

     D. Amendment to Definition of Second-Lien Term Debt. The definition of “Second-Lien Term Debt” contained in Section 1.1 of the Canadian Credit Agreement shall be amended and restated in full as follows:

     “Second-Lien Term Debt” means the Indebtedness of the Parent outstanding from time to time under the Second-Lien Credit Agreement (including Guarantees thereof by Subsidiaries of the Parent), including all renewals, refinancings, replacements and extensions thereof to the extent permitted under the U.S. Credit Agreement and under the Second-Lien Intercreditor Agreement and made in accordance with the terms of the Combined Loan Documents (including Section 7.14 of the U.S. Credit Agreement); provided, that, for the avoidance of doubt, the Permitted 2009 Senior Notes Debt shall not be considered a renewal, refinancing, replacement or extension of the Second-Lien Term Debt for purposes of this Agreement or any other Loan Document

     E. Amendment to Definition of Second-Lien Termination Date. Clause (c) of the definition of “Second-Lien Termination Date” contained in Section 1.1 of the Canadian Credit Agreement shall be amended and restated in full as follows:

     “(c) all Liens securing the Second-Lien Term Debt, the Permitted Senior Notes Debt, and the Permitted 2009 Senior Notes Debt have been released or terminated.”

     F. Additional Definitions. Section 1.1 of the Canadian Credit Agreement shall be amended by inserting the following definitions in the appropriate alphabetical order:

     “Permitted 2009 Senior Notes” means, collectively, each of the notes issued by the Parent on or after May 28, 2009 pursuant to the Permitted 2009 Senior Notes Indenture, as such notes may be amended, restated, renewed, extended, supplemented, replaced or otherwise modified from time to time to the extent permitted under the Combined Credit Agreements and under the Permitted 2009 Senior Notes Indenture.

     “Permitted 2009 Senior Notes Debt” means the Indebtedness (in addition to, and not including, Existing Subordinate Debt and Permitted Senior Notes Debt) of the Parent outstanding from time to time under the Permitted 2009 Senior Notes Documents (including Guarantees thereof by Subsidiaries of the Parent), including all renewals, refinancings, replacements, and extensions thereof to the extent permitted under the Combined Credit Agreements and made in

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accordance with the terms of the Combined Loan Documents (including Section 7.14 of the U.S. Credit Agreement), which Indebtedness shall be on terms (but not necessarily economic terms) substantially consistent with the Permitted Senior Notes Indenture and which Indebtedness otherwise satisfies each of the following criteria: (a) an aggregate yield to maturity not to exceed 14%, (b) a maturity date no earlier than 6 years after the date of issuance, (c) an aggregate principal amount not to exceed $600,000,000, and (d) no scheduled amortization of principal; provided, that, such Indebtedness is issued prior to August 1, 2009; provided, further, that, after the Second-Lien Period, all such Indebtedness shall be unsecured.

     “Permitted 2009 Senior Notes Documents” means the Permitted 2009 Senior Notes, the Permitted 2009 Senior Notes Indenture, and all promissory notes, guarantees, security agreements, pledge agreements, mortgages, deeds of trust and other documents, instruments and agreements executed and delivered pursuant to or in connection with the Permitted 2009 Senior Notes Indenture evidencing, guaranteeing, securing or otherwise pertaining to the Permitted 2009 Senior Notes Debt.

     “Permitted 2009 Senior Notes Indenture” means that certain Indenture dated as of December 22, 2005, between the Parent and The Bank of New York Mellon Trust Company, N.A. (as successor by merger), as trustee, and any successor trustees, as supplemented by a certain supplemental indenture, between the Parent and a financial institution serving as trustee thereunder, having terms (but not necessarily economic terms) substantially consistent with the Permitted Senior Notes Indenture and which otherwise satisfies each of the following criteria: (a) an aggregate yield to maturity not to exceed 14%, (b) a maturity date no earlier than 6 years after the date of issuance, (c) an aggregate principal amount not to exceed $600,000,000, and (d) no scheduled amortization, as the same may be amended, restated, renewed, extended, supplemented, replaced or otherwise modified from time to time to the extent permitted hereunder and under such Permitted 2009 Senior Notes Indenture.

     G. Amendment to Loan Party and Governmental Authorization; Contravention Provision. Section 3.2 of the Canadian Credit Agreement shall be amended in its entirety to read as follows:

     “SECTION 3.2 Loan Party and Governmental Authorization; Contravention. The execution, delivery and performance of this Agreement and the other Loan Documents by each Loan Party (to the extent each Loan Party is a party to this Agreement and such Loan Documents) (a) are within such Loan Party’s corporate, partnership or limited liability company powers, (b) when executed will be duly authorized by all necessary corporate, partnership or limited liability company action, (c) require no action by or in respect of, or filing with, any Governmental Authority (other than (i) actions or filings pursuant to the Exchange Act, (ii) actions or filings necessary to create or perfect the Liens required hereby or by any other Combined Loan Document, (iii) actions or filings

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that have been taken or made and are in full force and effect, and (iv) actions or filings which, if not taken or made, would not reasonably be expected to have a Material Adverse Effect) and (d) do not (i) contravene, or constitute a default under, any provision of (A) applicable Governmental Rule, except any contravention or default that would not reasonably be expected to have a Material Adverse Effect, (B) the articles or certificate of incorporation, bylaws, regulations, partnership agreement or comparable charter documents of any Loan Party, or (C) any agreement, judgment, injunction, order, decree or other instrument binding upon any Loan Party, including, without limitation, any Existing Subordinate Note Document, any Permitted Senior Notes Document, any Permitted 2009 Senior Notes Document or any Second-Lien Loan Document, except any contravention or default that would not reasonably be expected to have a Material Adverse Effect and, with respect to the Existing Convertible Debentures and Existing Convertible Note Indenture, assuming that any repurchase of the Existing Convertible Debentures pursuant to Section 3.06 of the Existing Convertible Note Indenture, and that any payment of the Existing Subordinate Notes, is made (1) at a time at which immediately before and after giving effect to such repurchase no Default, Event of Default, Global Borrowing Base Deficiency, U.S. Borrowing Base Deficiency or Global Availability Deficiency has occurred and is continuing or results therefrom, (2) with the proceeds from the sale of shares of common stock of the Borrower, or (3) in compliance with the last sentence of Section 7.14 of the U.S. Credit Agreement, or (ii) result in the creation or imposition of any Lien on any Borrowing Base Property or Collateral other than the Liens securing the Combined Obligations.”

     H. Amendment to Incurrence of Debt Covenant. Clause (r) of Section 7.1 of the Canadian Credit Agreement shall be amended and restated in full as follows:

     “(r) the Second-Lien Term Debt and the Permitted 2009 Senior Notes Debt; provided, however, that the aggregate principal amount of the Second-Lien Term Debt and the Permitted 2009 Senior Notes Debt does not exceed U.S. $650,000,000;”

and (ii) revising the proviso following subsection (r) thereof to read in full as follows:

     “provided, that, the Borrower may not incur new Indebtedness (other than (i) the renewal, extension, refinancing or replacement of the Existing Subordinate Debt, the Permitted Senior Notes Debt, the Permitted 2009 Senior Notes Debt or the Second-Lien Term Debt; provided, that any such renewal, extension, refinancing or replacement of any such Indebtedness shall not result in (A) an increase in the maximum aggregate principal amount of such Indebtedness, except to the extent such increase is in the amount of customary fees and expenses incurred by the Borrower or any other Loan Party in connection with any such renewal, extension, refinancing or replacement, (B) an increase in the rate of interest payable in cash with respect to such Indebtedness, (C) any Liens securing such Indebtedness being extended to any additional property of any Loan Party, except in accordance with the documentation relating to such Indebtedness in

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effect immediately prior to such renewal, extension, refinancing or replacement, (D) any Loan Party that is not obligated with respect to repayment of such Indebtedness immediately prior to such renewal, extension, refinancing or replacement thereof being required to become obligated with respect thereto, (E) except in accordance with the documentation relating to such Indebtedness in effect immediately prior to such renewal, extension, refinancing or replacement, (F) a shortening of the average weighted maturity of the Indebtedness so extended, refinanced, replaced or renewed, (G) terms less favorable to the obligor thereunder than the terms of such Indebtedness in effect immediately prior to such renewal, extension, refinancing or replacement thereof and (H) if such Indebtedness that is renewed, extended, refinanced or replaced was subordinated in right of payment to the Obligations, subordination terms and conditions that are less favorable to the Global Administrative Agent and the Lenders as those that were applicable to the renewed, extended, refinanced or replaced Indebtedness, and (ii) Guarantees by any Subsidiaries thereof to the extent the same is incurred in accordance with Section 7.14 of the U.S. Credit Agreement) described in clauses (f), (i), (j), (o) and (r) above at any time that a Default, Event of Default, Global Borrowing Base Deficiency or U.S. Borrowing Base Deficiency has occurred and is continuing.”

     I. Amendment to Listing of Events of Default Provision. Section 8.1 of the Canadian Credit Agreement shall be amended by restating subsections (n) and (q) thereof in their entirety to read as follows:

     “(n) a “Default” or “Event of Default” under, and as each such term is defined in, each material Existing Subordinate Note Document, including, without limitation, the Existing Subordinate Note Indenture and the Existing Convertible Note Indenture, each material Permitted Senior Notes Document, each material Permitted 2009 Senior Notes Document and each material Second-Lien Loan Document, shall occur and be continuing;”

     “(q) (i) the Liens securing the Second-Lien Term Debt, the Permitted Senior Notes Debt, the Permitted 2009 Senior Notes Debt and/or any Guarantees thereof shall cease, for any reason, to be, or shall be asserted by any Loan Party, any Second-Lien Term Lender, the Second-Lien Administrative Agent, the trustee under the Permitted Senior Notes Indenture, any holder of any Permitted Senior Notes Debt, the trustee under the Permitted 2009 Senior Notes Indenture or any holder of any Permitted 2009 Senior Notes Debt not to be, validly subordinated to the Liens securing the Combined Obligations to the extent provided or required by the Second-Lien Intercreditor Agreement or (ii) the Liens securing the Combined Obligations and the Combined Obligations themselves shall cease to constitute, or shall be asserted by any Loan Party, any Second-Lien Term Lender, the Second-Lien Administrative Agent, the trustee under the Permitted Senior Notes, any holder of any Permitted Senior Notes Debt, the trustee under the Permitted 2009 Senior Notes or any holder of any Permitted 2009 Senior Notes Debt not to constitute, “First Priority Liens” or “First Lien Obligations” (or any

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comparable terms), respectively, under and to the extent required by the Second-Lien Intercreditor Agreement.”

     III. PV-10 Amendment Effective Date Amendments to 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 VI hereof, the U.S. Credit Agreement shall be amended effective as of the PV-10 Amendment Effective Date in the manner provided in this Section III:

     A. Amendment to Total Debt Asset Coverage Ratio Covenant. Section 6.3 of the U.S. Credit Agreement shall be amended and restated in full as follows:

     “During the Second-Lien Period, the Borrower will not permit, as of the last day of any Fiscal Quarter, the ratio of (a) the sum of (i) the Proved PV-10 Value as of such day plus (ii) 50% of the BBEP Fair Market Value as of such day, to (b) the Total Debt as of such day to be less than the ratio set forth below opposite the period that includes such day:

Period	Ratio
June 30, 2009 through March 31, 2010	1.30 to 1.00
June 30, 2010 and thereafter	1.50 to 1.00”

     B. Amendment to Total Secured Debt Asset Coverage Ratio Covenant. Section 6.4 of the U.S. Credit Agreement shall be amended by amending and restating the chart following clause (b) to read in full as follows:

“Period	Ratio
September 30, 2008 through March 31, 2009	2.00 to 1.00
June 30, 2009 through March 31, 2010	1.60 to 1.00
June 30, 2010 through September 30, 2010	2.00 to 1.00
December 31, 2010 and thereafter	2.25 to 1.00”

     IV. Consent to Amendment of Second-Lien Intercreditor Agreement. The Consenting Combined Lenders hereby consent to and irrevocably authorize the Global Administrative Agent, at its option and in its discretion, to enter into an amendment or amendment and restatement of the Second-Lien Intercreditor Agreement in order to make such modifications, amendments or changes to the Second-Lien Intercreditor Agreement as may be necessary to incorporate the Permitted 2009 Senior Notes Debt in the Second-Lien Intercreditor

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Agreement on the same terms contained therein on the date hereof with respect to the Permitted Senior Notes and such other modifications, amendments or changes that the Global Administrative Agent deems reasonably necessary in connection with the issuance of the Permitted 2009 Senior Notes Debt and the amendments set forth in this Amendment.

     V. Eighth Amendment Effective Date Conditions Precedent. This Amendment (other than the amendments set forth in Section III hereof) shall be effective as of the date first set forth above when the following conditions precedent have been satisfied (the “Eighth Amendment 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 and the Majority 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 Eighth Amendment 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 the Consenting Combined Lenders pursuant to or in connection with this Amendment in consideration for the agreements set forth herein.

     C. No Default, Event of Default, Global Borrowing Base Deficiency, U.S. Borrowing Base Deficiency or Global Availability Deficiency shall have occurred which is continuing.

     VI. PV-10 Amendment Effective Date Conditions Precedent. The amendments set forth in Section III of this Amendment shall be effective on the date that each condition precedent set forth in this Section VI is satisfied (the “PV-10 Amendment Effective Date”):

     A. Each of the conditions precedent set forth in Section V has been satisfied.

     B. The Global Administrative Agent shall have received a duly executed copy of an amendment to the Second-Lien Credit Agreement effective on or before the PV-10 Amendment Effective Date which amends the total debt asset coverage ratio and total secured debt asset coverage ratio covenants contained therein such that those covenants are not more restrictive or onerous than those contained in the U.S. Credit Agreement (as amended by Section III of this Amendment) and which is otherwise in form and substance reasonably acceptable to the Global Administrative Agent.

     VII. 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:

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          (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).

          (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 this Amendment or the other Combined Loan Documents, after giving effect to the amendments and consents contained herein. Neither the U.S. Borrower or

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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, 2008 which individually or in the aggregate would reasonably be expected to have a Material Adverse Effect.

     VIII. Defined Terms. Capitalized terms used herein when defined in the U.S. Credit Agreement shall have the same meanings herein unless the context otherwise requires.

     IX. 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.

     X. 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 AND III 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.

     XI. 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.

     XII. 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

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acceptable to the Global Administrative Agent) shall be effective as delivery of a manually executed counterpart of this Amendment.

     XIII. 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.

     XIV. 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). Nothing in this Amendment, expressed or implied, shall be construed to confer upon any Person (other than the parties hereto, and their respective successors and assigns permitted hereby) any legal or equitable right, remedy or claim under or by reason of this Amendment.

     XV. 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.

     XVI. 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
Name:	MarLu Hiller
Title:	Vice President – Treasurer
CANADIAN BORROWER
QUICKSILVER RESOURCES CANADA INC.,
an Alberta, Canada corporation, as Canadian Borrower
By:	/s/ MarLu Hiller
Name:	MarLu Hiller
Title:	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 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]
Eighth Amendment to Combined Credit Agreements
Quicksilver Resources Inc.

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

[Signature Page]
Eighth Amendment to Combined Credit Agreements
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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]
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JPMORGAN CHASE BANK, N.A., TORONTO BRANCH, as a Canadian Administrative Agent and as a Canadian Lender
By:	/s/ Steve Voigt
Name:	Steve Voigt
Title:	Senior Vice President

[Signature Page]
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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]
Eighth Amendment to Combined Credit Agreements
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BNP PARIBAS, as a U.S. Lender
By:	/s/ Richard Hawthorne
Name:	Richard Hawthorne
Title:	Director
By:	/s/ Juan Carlos Sandoval
Name:	Juan Carlos Sandoval
Title:	Vice President

[Signature Page]
Eighth Amendment to Combined Credit Agreements
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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]
Eighth Amendment to Combined Credit Agreements
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THE BANK OF NOVA SCOTIA, as a U.S. Lender
By:	/s/ David Mills
Name: Title:	David Mills Managing Director

[Signature Page]
Eighth Amendment to Combined Credit Agreements
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DEUTSCHE BANK TRUST COMPANY AMERICAS, as a 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]
Eighth Amendment to Combined Credit Agreements
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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]
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CALYON NEW YORK BRANCH, as a U.S. Lender
By:	/s/ Tom Byargeon
Name:	Tom Byargeon
Title:	Managing Director
By:	/s/ Sharada Manne
Name:	Sharada Manne
Title:	Director

[Signature Page]
Eighth Amendment to Combined Credit Agreements
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CITIBANK, N.A., as a U.S. Lender
By:	/s/ James Reilly
Name:	James Reilly
Title:	Vice President

[Signature Page]
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UNION BANK, N.A. (formerly known as Union Bank of California, N.A.), as a U.S. Lender
By:	/s/ Alison Fuqua
Name:	Alison Fuqua
Title:	Assistant Vice President

[Signature Page]
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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]
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TORONTO DOMINION (TEXAS) LLC, as a U.S. Lender
By:	/s/ Ian Murray
Name:	Ian Murray
Title:	Authorized Signatory

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

[Signature Page]
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SUMITOMO MITSUI BANKING CORPORATION, as a U.S. Lender
By:	/s/ Masakazu Hasegawa
Name:	Masakazu Hasegawa
Title:	General Manager

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

[Signature Page]
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SOCIÉTÉ GÉNÉRALE, as a U.S. Lender
By:	/s/ Stephen Warfel
Name:	Stephen Warfel
Title:	Managing Director

[Signature Page]
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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]
Eighth Amendment to Combined Credit Agreements
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STERLING BANK, as a U.S. Lender
By: Name:	/s/ Melissa A. Bauman Melissa A. Bauman
Title:	Senior Vice President

[Signature Page]
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CIBC INC., as a U.S. Lender
By: Name:	/s/ Dominic J. Sorresso Dominic J. Sorresso
Title:	Executive Vice President
CIBC Worlds Markets Corp.
Authorized Signatory

[Signature Page]
Eighth Amendment to Combined Credit Agreements
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KEYBANK, N.A., as a U.S. Lender
By: Name:	/s/ Angela McCracken Angela McCracken
Title:	Senior Vice President

[Signature Page]
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EXPORT DEVELOPMENT CANADA, as a U.S. Lender
By: Name:	/s/ Janine Dopson Janine Dopson
Title:	Asset Manager
By: Name:	/s/ Shawn Cusick Shawn Cusick
Title:	Loan Portfolio Manager

[Signature Page]
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BARCLAYS BANK PLC, as a U.S. Lender
By: Name:	/s/ Maria Lund Maria Lund
Title:	Vice President

[Signature Page]
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CREDIT SUISSE, CAYMAN ISLANDS
BRANCH, as a U.S. Lender
By: Name:	/s/ Vanessa Gomez Vanessa Gomez
Title:	Director
By: Name:	/s/ Christopher Reo Day Christopher Reo Day
Title:	Associate

[Signature Page]
Eighth Amendment to Combined Credit Agreements
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SCOTIABANC INC.,
as a U.S. Lender
By: Name:	/s/ R. Blackwood R. Blackwood
Title:	Director

[Signature Page]
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GOLDMAN SACHS BANK USA,
as a U.S. Lender
By: Name:	/s/ John Makrinos John Makrinos
Title:	Authorized Signatory

[Signature Page]
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BANK OF AMERICA, N.A. (by its Canada
branch), as a Canadian Lender
By: Name:	/s/ Clara McGibbon Clara McGibbon
Title:	Assistant Vice President

[Signature Page]
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BNP PARIBAS (CANADA), as a Canadian
Lender
By: Name:	/s/ Chris Rice Chris Rice
Title:	Vice President
By: Name:	/s/ Eric Borromeo Eric Borromeo
Title:	Vice President

[Signature Page]
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FORTIS CAPITAL (CANADA) LTD., as a
Canadian Lender
By: Name:	/s/ Cory Wallin Cory Wallin
Title:	Vice President
By: Name:	/s/ Doug Clark Doug Clark
Title:	Director

[Signature Page]
Eighth Amendment to Combined Credit Agreements
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THE BANK OF NOVA SCOTIA, as a Canadian
Lender
By: Name:	/s/ Stacey Strike Stacey Strike
Title:	Director
By: Name:	/s/ Angela Beeker Angela Beeker
Title:	Associate Director

[Signature Page]
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DEUTSCHE BANK AG CANADA BRANCH, as
a Canadian Lender
By: Name:	/s/ Eitan Szlak Eitan Szlak
Title:	Vice President
By: Name:	/s/ Marcellus Leung Marcellus Leung
Title:	Assistant Vice President

[Signature Page]
Eighth Amendment to Combined Credit Agreements
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CALYON NEW YORK BRANCH, as a Canadian
Lender
By: Name:	/s/ Tom Byargeon Tom Byargeon
Title:	Managing Director
By: Name:	/s/ Sharada Manne Sharada Manne
Title:	Director

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

[Signature Page]
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UNION BANK, CANADA BRANCH (formerly known as
Union Bank of California, N.A., Canada Branch), as a
Canadian Lender
By: Name:	/s/ Phil Taylor Phil Taylor
Title:	Senior Vice President

[Signature Page]
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WELLS FARGO FINANCIAL
CORPORATION CANADA, as a Canadian
Lender
By: Name:	/s/ Paul D. Young Paul D. Young
Title:	Vice President

[Signature Page]
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THE TORONTO-DOMINION BANK, as a
Canadian Lender
By: Name:	/s/ Ian Murray Ian Murray
Title:	Authorized Signatory

[Signature Page]
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U.S. BANK NATIONAL ASSOCIATION, as a Canadian Lender
By:	/s/ S. Atherton
Name: S. Atherton
Title: Principal Officer

[Signature Page]
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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]
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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: Director

[Signature Page]
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COMERICA BANK, CANADA BRANCH, as a Canadian Lender
By:	/s/ Omer Ahmed
Name: Omer Ahmed
Title: Portfolio Manager

[Signature Page]
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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/ David Swain
Name: David Swain
Title: Managing Director

[Signature Page]
Eighth Amendment to Combined Credit Agreements
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KEYBANK, NATIONAL ASSOCIATION, as a Canadian Lender
By:	/s/ Angela McCracken
Name: Angela McCracken
Title: Senior Vice President

[Signature Page]
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Quicksilver Resources Inc.

BARCLAYS BANK PLC, as a Canadian Lender
By:	/s/ Maria Lund
Name: Maria Lund
Title: Vice President

[Signature Page]
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CREDIT SUISSE, TORONTO BRANCH, as a Canadian Lender
By:	/s/ Alain Daoust
Name: Alain Daoust
Title: Director
By:	/s/ Bruce F. Wetherly
Name: Bruce F. Wetherly
Title: Director, Credit Suisse, Toronto Branch

[Signature Page]
Eighth Amendment to Combined Credit Agreements
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EX-10.2

Exhibit 10.2

     AMENDMENT NO. 1 dated as of June 3, 2009 (this “Amendment”), to the Credit Agreement dated as of August 8, 2008 (as amended, supplemented or otherwise modified through the date hereof, the “Credit Agreement”), among Quicksilver Resources Inc., a Delaware corporation (the “Borrower”), the Lenders from time to time party thereto and Credit Suisse, Cayman Islands Branch, as the Administrative Agent.

          WHEREAS, pursuant to the Credit Agreement, the Lenders have made Loans to the Borrower;

          WHEREAS, the Borrower has informed the Administrative Agent that it desires to refinance all or a portion of the Loans outstanding under the Credit Agreement with the proceeds of an offering and sale of new senior notes of the Borrower (the “New Senior Notes”);

          WHEREAS, the Borrower has requested that, in the event the Loans outstanding under the Credit Agreement are refinanced with the proceeds of the New Senior Notes in part but not in full, the Credit Agreement and the other Loan Documents be amended (a) to permit the issuance of the New Senior Notes, and the grant of a security interest in the Collateral to secure the obligations of the Borrower and the Subsidiaries under the New Senior Notes, and (b) to effect such other amendments as are set forth herein; and

          WHEREAS, the Lenders party hereto, which represent at least the Required Lenders, are willing to agree to such amendments on the terms and subject to the conditions set forth herein.

          NOW, THEREFORE, in consideration of the mutual agreements herein contained and other good and valuable consideration, the sufficiency and receipt of which are hereby acknowledged, the parties hereto hereby agree as follows:

          SECTION 1. Defined Terms. Capitalized terms used but not otherwise defined herein (including in the recitals hereto) have the meanings assigned to them in the Credit Agreement.

          SECTION 2. Amendments to the Credit Agreement. (a) Section 1.01 of the Credit Agreement is hereby amended as follows:

     (i) The following new defined terms are inserted in the appropriate alphabetical order:

          “First Amendment” means the Amendment No. 1 dated as of June 3, 2009, to this Agreement.

          “First Amendment Effective Date” has the meaning given to the term “Amendment Effective Date” in the First Amendment.

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          “New Senior Notes” means senior notes of the Borrower issued on or after the First Amendment Effective Date, and the Indebtedness represented thereby.

          “New Senior Notes Documents” means the New Senior Notes, the New Senior Notes Indenture and all promissory notes, guarantees and other documents, instruments and agreements executed and delivered pursuant to the New Senior Notes Indenture evidencing, guaranteeing or otherwise pertaining to the New Senior Notes, other than any Security Documents.

          “New Senior Notes Indenture” means that certain Indenture dated as of December 22, 2005, between the Borrower and The Bank of New York Mellon Trust Company, N.A. (as successor in interest), as trustee (or any successor trustee), as supplemented by a Supplemental Indenture to be entered into in connection with the issuance of the New Senior Notes.

     (ii) The following defined terms are hereby amended and restated in their entirety as follows:

          “Alternate Base Rate” means, for any day, a rate per annum equal to the greatest of (a) the Prime Rate in effect on such day, (b) the Federal Funds Effective Rate in effect on such day plus 1/2 of 1%, (c) the Adjusted Eurodollar Rate for a one month Interest Period on such day (or if such day is not a Business Day, the immediately preceding Business Day) plus 1% (provided that, for the avoidance of doubt, the Adjusted Eurodollar Rate for any day shall be based on the British Bankers’ Association LIBOR rate for deposits in U.S. Dollars as reported by any generally recognized financial information service at approximately 11:00 a.m., London time, on such day) and (d) 4.25%. Any change in the Alternate Base Rate due to a change in the Prime Rate, the Federal Funds Effective Rate or the Adjusted Eurodollar Rate shall be effective on the effective date of such change in the Prime Rate, the Federal Funds Effective Rate or the Adjusted Eurodollar Rate, as the case may be. If the Administrative Agent shall have determined (which determination shall be conclusive and binding, absent manifest error) that it is unable to ascertain the Federal Funds Effective Rate for any reason, including the inability or failure of the Administrative Agent to obtain sufficient quotations in accordance with the terms of the definition of such term, the Alternate Base Rate shall be determined without regard to clause (b) of the preceding sentence until the circumstances giving rise to such inability no longer exist.

          “Applicable Margin” means, for any day, (a) with respect to any Eurodollar Loan, 4.50% per annum, and (b) with respect to any ABR Loan, 3.50% per annum, in each case plus an Incremental Applicable Margin, if any, applicable on such day; provided, however, that, after June 30, 2009, the term “Applicable Margin” shall mean (i) with respect to any Eurodollar Loan, 7.00% per annum, and (ii) with respect to any ABR Loan, 6.00% per annum, in each case plus an Incremental Applicable Margin, if any, applicable on such day.

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          “Existing Notes” means the Existing Convertible Debentures, the Existing Senior Notes, the Existing Subordinated Notes and the New Senior Notes.

          “Existing Notes Documents” means the Existing Convertible Debentures Documents, the Existing Senior Notes Documents, the Existing Subordinated Notes Documents and the New Senior Notes Documents.

          “Existing Notes Indentures” means the Existing Convertible Debentures Indenture, the Existing Senior Notes Indenture, the Existing Subordinated Notes Indenture and the New Senior Notes Indenture.

     (iii) The defined term “Prepayment Event” is hereby amended by amending and restating clause (d) thereof in its entirety as follows: “(d) the incurrence by the Borrower or any other Credit Party of any Permitted Subordinated Indebtedness or any New Senior Notes; or”.

          (b) Section 1.03 of the Credit Agreement is hereby amended by adding the following sentence at the end thereof:

“Notwithstanding any other provision contained herein, all terms of an accounting or financial nature used herein shall be construed, and all computations of amounts and ratios referred to herein shall be made, without giving effect to any election under Statement of Financial Accounting Standards No. 159 (and any other Financial Accounting Standard having a similar result or effect) to value any Indebtedness or other liabilities of the Borrower or any Subsidiary at “fair value”, as defined therein.”

          (c) Section 2.10 of the Credit Agreement is hereby amended by (i) the designation of the existing paragraph thereof as paragraph “(a)” and (ii) the insertion of the a new paragraph at the end thereof as follows:

   “(b) The Borrower agrees to pay to the Administrative Agent, for the account of each Lender, a fee (the “Duration Fee”) equal to 0.50% of the aggregate principal amount of the Loans of such Lender outstanding on June 30, 2009. The Duration Fees shall be payable on the first Business Day following June 30, 2009, in immediately available funds, and shall not be refundable under any circumstances absent manifest error (e.g., as a result of a clerical mistake).”

          (d) Section 6.03 of the Credit Agreement is hereby amended and restated in its entirety as follows:

     “SECTION 6.03. Total Debt Asset Coverage Ratio. The Borrower will not permit, as of the last day of any Fiscal Quarter, the ratio of (a) the sum of (i) the Proved PV-10 Value as of such day plus (ii) 50% of the BBEP Fair Market Value as of such day to (b) the Total Debt as of

4

such day to be less than the ratio set forth below opposite the period that includes such day:

Period	Ratio
June 30, 2009 to March 31, 2010	1.30 to 1.00
June 30, 2010 and thereafter	1.50 to 1.00”

          (e) Section 6.04 of the Credit Agreement is hereby amended is hereby amended and restated in its entirety as follows:

     “SECTION 6.04. Total Secured Debt Asset Coverage Ratio. The Borrower will not permit, as of the last day of any Fiscal Quarter, the ratio of (a) the sum of (i) the Proved PV-10 Value as of such day plus (ii) 50% of the BBEP Fair Market Value as of such day to (b) the Total Secured Debt as of such day to be less than the ratio set forth below opposite the period that includes such day:

Period	Ratio
September 30, 2008 through March 31, 2009	2.00 to 1.00
June 30, 2009 through March 31, 2010	1.60 to 1.00
June 30, 2010 through September 30, 2010	2.00 to 1.00
December 31, 2010 and thereafter	2.25 to 1.00”

          (f) Section 7.01 of the Credit Agreement is hereby amended (i) to delete the word “and” at the end of clause (p) thereof, (ii) to replace the period at the end of clause (q) thereof with “; and” and (iii) to add immediately after the end of clause (q) thereof the following new clause (r):

“(r) the New Senior Notes, provided that the Net Cash Proceeds thereof are applied in the manner required, and to the extent required, by Section 2.09(b) to prepay the Loans.”

(g) Section 7.13 of the Credit Agreement is hereby amended as follows:

     (i) by amending and restating clause (i) of the first proviso set forth therein in its entirety as follows:

“(i) so long as no Default or Event of Default has occurred and is continuing or would result therefrom, the Borrower or any other

5

Credit Party may, in connection with any refinancing of any Existing Notes (other than any New Senior Notes) or any Permitted Subordinated Indebtedness, or of any Refinancing Indebtedness in respect of any thereof, permitted by Section 7.01, prepay all or any portion of the principal of, and accrued interest and premiums, if any, on, any such Existing Notes, any Permitted Subordinated Indebtedness or any such Refinancing Indebtedness prior to the scheduled maturity thereof;”; and

     (ii) by amending and restating in its entirety the last sentence thereof as follows:

“Notwithstanding the foregoing, the provisions of this Section shall in no event or circumstance apply to or restrict any payment (whether in respect of a purchase, repurchase, redemption, defeasance, prepayment or otherwise) that the Borrower is obligated to make in respect of any Existing Senior Notes or any New Senior Notes; provided, however, that, except for any actions permitted under clause (i) or (iii) above, the Borrower will not, nor will the Borrower permit any other Credit Party to, take any action, or omit to take any action, if, as the direct result of such action or omission, any Existing Senior Notes or any New Senior Notes shall become due and payable prior to the scheduled maturity thereof.”.

          (h) Section 7.14 of the Credit Agreement is hereby amended by amending clause (i) of the first proviso set forth therein (i) to insert in subclause (C) thereof the phrase “(other than any New Senior Notes)” immediately after each reference to “the Existing Notes”, (ii) to replace the word “and” at the end of subclause (C) thereof with a comma, (iii) to renumber subclause (D) thereof as subclause (E) and (iv) to add immediately after the end of subclause (C) thereof the following new subclause (D):

“(D) restrictions and conditions imposed by any definitive agreements governing or evidencing any of the New Senior Notes, provided that the restrictions and conditions contained in any such definitive agreements are not materially less favorable to the Lenders, taken as a whole, than the restrictions and conditions imposed by the definitive agreements governing or evidencing the Existing Senior Notes as in effect on the date hereof, and”.

          (i) Section 10.16 of the Credit Agreement is hereby amended by replacing the phrase “Section 7.02 thereof” set forth therein with the phrase “Section 7.01 or 7.02 thereof”.

          SECTION 3. Concerning the New Senior Notes. (a) Each Lender party hereto acknowledges that the Borrower desires that obligations of the Borrower and the Subsidiaries under the New Senior Notes Documents be secured by Liens created under the Security Documents on substantially the same terms as such Liens secure obligations of the Borrower and the Subsidiaries under the Existing Senior Notes Documents. Each

6

Lender party hereto irrevocably (i) consents to such amendments, supplements or other modifications to the Security Documents as the Administrative Agent determines to be required or desired in order to secure thereunder obligations of the Borrower and the Subsidiaries under the New Senior Notes Documents on substantially the same terms as the obligations of the Borrower and the Subsidiaries under the Existing Senior Notes Documents are secured thereunder, and to provide to the New Senior Notes, and the holders thereof, all the other rights, powers and privileges that are provided for thereunder with respect to the Existing Senior Notes and the holders thereof, (ii) authorizes and directs the Administrative Agent to execute and deliver such agreement or agreements as shall effectuate such amendments, supplements or other modifications, in each case without any further consent, authorization or other action by such Lender, and (iii) agrees that such Lender shall not have any right of action whatsoever against the Administrative Agent as a result of any action taken by the Administrative Agent pursuant to this paragraph. Without limiting the foregoing, each Lender party hereto consents to (A) the amendment of the term “Secured Obligations” to include Indebtedness due with respect to the New Senior Notes and the Guarantees of the Subsidiaries in respect thereof and (B) the amendment of the term “Secured Parties” to include each holder of the New Senior Notes.

          (b) Each Lender party hereto acknowledges that, as a condition precedent under the First Lien Loan Documents to the issuance of the New Senior Notes, the Liens securing the New Senior Notes and the holders thereof are required to be subject to the terms of the Intercreditor Agreement. Each Lender party hereto irrevocably (i) consents to such amendments, supplements or other modifications to the Intercreditor Agreement as the Administrative Agent determines to be required or desired in order to subject the Liens securing the New Senior Notes, and the rights, powers and privileges of the holders of the New Senior Notes, to the provisions of the Intercreditor Agreement on substantially the same terms as such provisions apply to the Liens securing the Existing Senior Notes and the rights, powers and privileges of the holders of the Existing Senior Notes, (ii) authorizes and directs the Administrative Agent to execute and deliver such agreement or agreements as shall effectuate such amendments, supplements or other modifications, in each case without any further consent, authorization or other action by such Lender, and (iii) agrees that such Lender shall not have any right of action whatsoever against the Administrative Agent as a result of any action taken by the Administrative Agent pursuant to this paragraph.

          (c) The Administrative Agent shall have the benefit of the provisions of Article IX of the Credit Agreement with respect to all actions taken by it pursuant to this Section to the full extent thereof.

          (d) The Loans and other Term Obligations are hereby designated as “Senior Indebtedness” for purposes of the New Senior Notes Indenture.

          (e) The Lenders party hereto agree that, in respect of any Prepayment Event arising from the incurrence of any New Senior Notes, the Borrower shall be deemed to be in compliance with Section 2.09(e) so long as the Borrower shall have

7

given the notice contemplated by such Section in connection with such Prepayment Event on or prior to the Prepayment Date with respect thereto.

          SECTION 4. Representations and Warranties. The Borrower represents and warrants to the Administrative Agent and the Lenders that:

          (a) The execution, delivery and performance by the Borrower of this Amendment have been duly authorized by all necessary corporate or other organizational action on the part of the Borrower. This Amendment has been duly executed and delivered by the Borrower and this Amendment and the Credit Agreement, as amended by this Amendment, constitute legal, valid and binding obligations of the Borrower, enforceable against it in accordance with their terms, except as the enforceability thereof may be limited by (i) bankruptcy, insolvency, reorganization, moratorium, or similar Governmental Rules affecting creditors’ rights generally, and (ii) equitable principles of general applicability (whether enforcement is sought by proceedings at law or in equity).

          (b) The representations and warranties of the Borrower and the other Loan Parties set forth in the Credit Agreement and the other Loan Documents are true and correct in all material respects on and as of the Amendment Effective Date (as defined below), except in the case of any such representation or warranty that is made expressly as of an earlier date, in which case such representation or warranty is true and correct in all material respects on and as of such earlier date.

          (c) On and as of the Amendment Effective Date, no Default has occurred and is continuing.

          SECTION 5. Amendment Fees. The Borrower agrees to pay to the Administrative Agent, for the account of each Lender that executes and delivers a copy of this Amendment to the Administrative Agent (or its counsel) at or prior to 5:00 p.m., New York City time, on June 3, 2009, an amendment fee (collectively, the “Amendment Fees”) in an amount equal to 0.25% of the aggregate principal amount of the Loans of such Lender outstanding on such date. The Amendment Fees shall be payable in immediately available funds on, and subject to the occurrence of, the Amendment Effective Date.

          SECTION 6. Conditions to Effectiveness. This Amendment shall become effective on and as of the date on which each of the following conditions precedent is satisfied (such date, the “Amendment Effective Date”):

          (a) The Administrative Agent (or its counsel) shall have received either signed counterparts of this Amendment or written evidence satisfactory to the Administrative Agent (which may include facsimile or other customary electronic transmission acceptable to the Administrative Agent of a signed signature page of this Amendment) that, when taken together, bear the authorized signatures of the Borrower and the Required Lenders.

          (b) The Administrative Agent shall have received such documents and certificates as the Administrative Agent or its counsel may reasonably request relating to

8

the authorization of the transactions contemplated hereby and any other legal matters relating to the Borrower, the Loan Documents or the transactions contemplated hereby, all in form and substance reasonably satisfactory to the Administrative Agent.

          (c) The representations and warranties of the Borrower set forth in Section 4 hereof shall be true and correct as of the Amendment Effective Date, and the Administrative Agent shall have received a certificate, dated the Amendment Effective Date and signed by the Chief Executive Officer or a Financial Officer of the Borrower, confirming the accuracy thereof, which shall be in form and substance reasonably satisfactory to the Administrative Agent.

          (d) The Administrative Agent shall have received the Amendment Fees and all fees payable to the Administrative Agent or any Affiliate thereof pursuant to that certain engagement letter entered into in connection with this Amendment that are required to be paid on or before the Amendment Effective Date and all amounts required to be paid to the Administrative Agent or any Affiliate thereof in accordance with any Loan Document on or prior to the Amendment Effective Date, including reimbursement or payment of all reasonable out-of-pocket expenses (including reasonable fees, charges and disbursements of counsel) required to be reimbursed or paid by any Loan Party under any Loan Document.

          SECTION 7. Effect of Amendment. (a) Except as expressly set forth herein, this Amendment shall not by implication or otherwise limit, impair, constitute a waiver of or otherwise affect the rights and remedies of the Lenders, the Administrative Agent (or any sub-agent thereof) or the Arrangers under the Credit Agreement or any other Loan Document, and shall not alter, modify, amend or in any way affect any of the terms, conditions, obligations, covenants or agreements contained in the Credit Agreement or any other Loan Document, all of which are ratified and affirmed in all respects and shall continue in full force and effect. Nothing herein shall be deemed to entitle any Loan Party to a consent to, or a waiver, amendment, modification or other change of, any of the terms, conditions, obligations, covenants or agreements contained in the Credit Agreement or any other Loan Document in similar or different circumstances.

          (b) On and after the Amendment Effective Date, each reference in the Credit Agreement to “this Agreement”, “hereunder”, “hereof”, “herein”, or words of like import, and each reference to the Credit Agreement in any other Loan Document shall be deemed to be a reference to the Credit Agreement as amended hereby. This Amendment shall constitute a “Loan Document” for all purposes of the Credit Agreement and the other Loan Documents.

          SECTION 8. Governing Law. THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

          SECTION 9. Counterparts. This Amendment may be executed in counterparts (and by different parties hereto on different counterparts), each of which

9

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 facsimile or other electronic imaging shall be as effective as delivery of a manually executed counterpart of this Amendment.

          SECTION 10. Headings. 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.

[Remainder of page intentionally left blank]

10

          IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed by their respective authorized officers as of the day and year first written above.

QUICKSILVER RESOURCES INC.,
by	/s/ MarLu S. Hiller
	Name: MarLu S. Hiller
	Title: Vice President — Treasurer

	CREDIT SUISSE, CAYMAN ISLANDS BRANCH, individually and as Administrative Agent,
by	/s/ Vanessa Gomez
	Name: Vanessa Gomez
	Title: Director
by	/s/ Mikhail Faybusovich
	Name: Mikhail Faybusovich
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LOOMIS SAYLES CLO I, LTD.
by	Loomis, Sayles and Company, L.P., its Collateral Manager
by	Loomis, Sayles and Company, Inc., its General Partner
	/s/ Kevin P. Charleston
	Name: Kevin P. Charleston
	Title: Executive Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	AMMC CLO III, LIMITED
by	American Money Management Corp., as Collateral Manager
	/s/ Chester M. Eng
	Name: Chester M. Eng
	Title: Senior Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	AMMC CLO IV, LIMITED
by	American Money Management Corp., as Collateral Manager
	/s/ Chester M. Eng
	Name: Chester M. Eng
	Title: Senior Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM HIGH YIELD TRUST
by	/s/ Beth Mazor
	Name: Beth Mazor
	Title: VP

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM VARIABLE TRUST — PVT DIVERSIFIED INCOME FUND
by	/s/ Beth Mazor
	Name: Beth Mazor
	Title: VP

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	INTERPOLIS PENSIOENEN GLOBAL HIGH YIELD POOL
by	/s/ Angela Patel
	Name: Angela Patel
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM HIGH YIELD ADVANTAGE FUND
by	/s/ Beth Mazor
	Name: Beth Mazor
	Title: VP

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM ASSET ALLOCATION FUND: BALANCED PORTFOLIO
by	/s/ Suzanne Deshaies
	Name: Suzanne Deshaies
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM FLOATING RATE INCOME FUND
by	/s/ Beth Mazor
	Name: Beth Mazor
	Title: V.P.

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM DIVERSIFIED INCOME TRUST (CAYMAN) MASTER FUND
by	/s/ Angela Patel
	Name: Angela Patel
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	THE PUTNAM ADVISORY COMPANY, LLC ON BEHALF OF PUTNAM GLOBAL FUNDS — PUTNAM WORLDWIDE INCOME FUND
by	/s/ Lauren Silk
	Name: Lauren Silk
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM PREMIER INCOME TRUST
by	/s/ Beth Mazor
	Name: Beth Mazor
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM MASTER INTERMEDIATE INCOME TRUST
by	/s/ Beth Mazor
	Name: Beth Mazor
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM VARIABLE TRUST — PUTNAM VT GLOBAL ASSET ALLOCATION FUND
by	Putnam Investment Management, LLC
	/s/ Lauren Silk
	Name: Lauren Silk
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM DIVERSIFIED INCOME TRUST
by	/s/ Beth Mazor
	Name: Beth Mazor
	Title:   Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM TOTAL RETURN TRUST
by	Putnam Investment Management LLC
by	/s/ Suzanne Deshaies
	Name: Suzanne Deshaies
	Title:   Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM RETIREMENT ADVANTAGE GAA BALANCE PORTFOLIO
by	Putnam Investment Management LLC
by	/s/ Suzanne Deshaies
	Name: Suzanne Deshaies
	Title:   Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM RETIREMENT ADVANTAGE GAA GROWTH PORTFOLIO
by	Putnam Investment Management, LLC
by	/s/ Suzanne Deshaies
	Name: Suzanne Deshaies
	Title:   Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	THE PUTNAM ADVISORY COMPANY, LLC ON BEHALF OF IG PUTNAM HIGH YIELD INCOME FUND
by	/s/ Suzanne Deshaies
	Name: Suzanne Deshaies
	Title:   Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM VARIABLE TRUST — PVT HIGH YIELD FUND
by	/s/ Beth Mazor
	Name: Beth Mazor
	Title:   Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	THE PUTNAM ADVISORY COMPANY, LLC ON BEHALF OF STICHTING PENSIOENFONDS VOOR FYSIOTHERAPEUTEN
by	/s/ Suzanne Deshaies
	Name: Suzanne Deshaies
	Title:   Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ANCHORAGE CROSSOVER CREDIT FINANCE, LTD
by	Anchorage Advisors, L.L.C., its Investment Manager
	/s/ Daniel Allen
	Name: Daniel Allen
	Title:   Senior Portfolio Manager
Name of Lender:	PCI FUND L.L.C.
by	Anchorage Advisors, L.L.C., its Investment Manager
	/s/ Daniel Allen
	Name: Daniel Allen
	Title:   Senior Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GRAND CENTRAL ASSET TRUST, LBAM SERIES
by	/s/ Adam Jacobs
	Name: Adam Jacobs
	Title:   Attorney-in-Fact

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LIGHTPOINT CLO 2004-1, LTD.
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LIGHTPOINT CLO III, LTD.
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LIGHTPOINT CLO IV, LTD.
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LIGHTPOINT CLO V, LTD.
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LIGHTPOINT CLO VIII LTD.
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ARLIE CLO 2006-I, LTD.
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ALTICOR INC.
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	NEUBERGER BERMAN HIGH INCOME BOND FUND
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	NEUBERGER BERMAN INCOME OPPORTUNITY FUND, INC.
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	OHIO POLICE & FIRE PENSION FUND
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PLUMBERS & PIPEFITTER NATIONAL PENSION FUND
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PRINCIPAL INVESTORS FUND, INC — HIGH YIELD FUND
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GMAM INVESTMENT FUNDS TRUST
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LEHMAN BROTHERS FIRST TRUST INCOME OPPORTUNITY FUND
by	/s/ Colin Donlan
	Name: Colin Donlan
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	NORTHWOODS CAPITAL IV, LIMITED
by	Angelo, Gordon & Co. L.P., as Collateral Manager
	/s/ Bruce Martin
	Name: Bruce Martin
	Title:   Managing Director
Name of Lender:	NORTHWOODS CAPITAL V, LIMITED
by	Angelo, Gordon & Co. L.P., as Collateral Manager
	/s/ Bruce Martin
	Name: Bruce Martin
	Title:   Managing Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	NORTHWOODS CAPITAL VI, LIMITED
by	Angelo, Gordon & Co. L.P., as Collateral Manager
	/s/ Bruce Martin
	Name: Bruce Martin
	Title:   Managing Director
Name of Lender:	NORTHWOODS CAPITAL VII, LIMITED
by	Angelo, Gordon & Co. L.P., as Collateral Manager
	/s/ Bruce Martin
	Name: Bruce Martin
	Title:   Managing Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	AG DIVERSIFIED CREDIT STRATEGIES MASTER, L.P.
by	AG Diversified Credit Strategies GP, LLC, its General Partner
by	Angelo, Gordon & Co. L.P., its Manager
	/s/ Bruce Martin
	Name: Bruce Martin
	Title:   Managing Director
Name of Lender:	JRG REINSURANCE COMPANY, LTD.
by	Angelo, Gordon & Co. L.P., as Investment Manager
by	/s/ Bruce Martin
	Name: Bruce Martin
	Title:   Managing Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	BLACKSTONE SPECIAL FUNDING (IRELAND) GSO CAPITOL PARTNERS LP, its Manager
by	/s/ George Fan
	Name: George Fan
	Title:   Attorney-in-Fact

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CENTRAL STATES, S.E. & S.W. AREAS PENSION FUND
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	STONE HARBOR HIGH YIELD BOND FUND
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LIBRA GLOBAL LIMITED
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LOYALIS SCHADE NV
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	MULTI MANAGER PROGRAMMES PCC LIMITED GLOBAL HIGH YIELD MASTER FUND
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	NEW YORK TIMES COMPANY PENSION TRUST
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	COMMONWEALTH OF PENNSYLVANIA STATE EMPLOYEES RETIREMENT SYSTEM
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	STONE HARBOR LEVERAGED LOAN PORTFOLIO
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	SAN JOAQUIN COUNTY EMPLOYEES’ RETIREMENT ASSOCIATION
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	STONE HARBOR INVEST FUNDS PLC — STONE HARBOR HIGH YIELD BOND FUND
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	UBS (UK) PENSION AND LIFE ASSURANCE SCHEME
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	REGENTS OF THE UNIVERSITY OF CALIFORNIA
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	VIRGINIA RETIREMENT SYSTEM
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	WELLS FARGO & COMPANY MASTER PENSION TRUST
by	/s/ Beth Semmel
	Name: Beth Semmel
	Title:   Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GALE FORCE 1 CLO, LTD.
by	GSO/Blackstone Debt Funds Management LLC, as Collateral Manager
	/s/ Daniel H. Smith
	Name: Daniel H. Smith
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GALE FORCE 2 CLO, LTD.
by	GSO/Blackstone Debt Funds Management LLC, as Collateral Manager
	/s/ Daniel H. Smith
	Name: Daniel H. Smith
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GALE FORCE 3 CLO, LTD.
by	GSO/Blackstone Debt Funds Management LLC, as Collateral Manager
	/s/ Daniel H. Smith
	Name: Daniel H. Smith
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GALE FORCE 4 CLO, LTD.
by	GSO/Blackstone Debt Funds Management LLC, as Collateral Manager
	/s/ Daniel H. Smith
	Name: Daniel H. Smith
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CHELSEA PARK CLO LTD.
by	GSO/Blackstone Debt Funds Management LLC, as Collateral Manager
	/s/ Daniel H. Smith
	Name: Daniel H. Smith
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	COLUMBUS PARK CDO LTD.
by	GSO/Blackstone Debt Funds Management LLC, as Collateral Manager
	/s/ Daniel H. Smith
	Name: Daniel H. Smith
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	JACKSON SQUARE CLO LTD.
by	GSO/Blackstone Debt Funds Management LLC, as Collateral Manager
	/s/ Daniel H. Smith
	Name: Daniel H. Smith
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LAFAYETTE SQUARE CDO LTD.
by	Blackstone Debt Advisors L.P., as Collateral Manager
	/s/ Dean T. Criares
	Name: Dean T. Criares
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	UNION SQUARE CDO LTD.
by	Blackstone Debt Advisors L.P., as Collateral Manager
	/s/ Dean T. Criares
	Name: Dean T. Criares
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	HIGH YIELD BOND COMMON TRUST FUND (CMN1)
by	/s/ Kali Ramachandran
	Name: Kali Ramachandran
	Title:   Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PUTNAM INVESTMENT MANAGEMENT LLC, on behalf of its series, ASSET ALLOCATION CONSERVATIVE
by	PUTNAM INVESTMENT MANAGEMENT, LLC
	/s/ Suzanne Deshaies
	Name: Suzanne Deshaies
	Title:   Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	SILVER LAKE CREDIT FUND, L.P.
by	SILVER LAKE FINANCIAL ASSOCIATES, L.P., its General Partner
	/s/ Roger Wittlin
	Name: Roger Wittlin
	Title:   Managing Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	OREGON PUBLIC EMPLOYEES RETIREMENT FUND
by	/s/ Sue Wawreycki
	Name: Sue Wawreycki
	Title:   Authorized Signatory
Name of Lender:	KKR FI PARTNERS I, LP
by	/s/ Sue Wawreycki
	Name: Sue Wawreycki
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	NUVEEN FLOATING RATE INCOME FUND
by	Symphony Asset Management, LLC
	/s/ James Kim
	Name: James Kim
	Title:   Associate Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	NUVEEN SENIOR INCOME FUND
by	Symphony Asset Management, LLC
	/s/ James Kim
	Name: James Kim
	Title:   Associate Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ARES ENHANCED CREDIT OPPORTUNITIES FUND LTD.
by	Ares Enhanced Credit Opportunities Fund Management, L.P,
	/s/ Americo Cascella
	Name: Americo Cascella
	Title:   Authorized Signatory
Name of Lender:	ARES ENHANCED LOAN INVESTMENT STRATEGY IR LTD.
by	Ares Enhanced Loan Management IR, L.P., as Portfolio Manager
by	Ares Enhanced Loan IR GP, LLC, as its General Partner
by	Ares Management LLC, as its Manager
	/s/ Americo Cascella
	Name: Americo Cascella
	Title:   Authorized Signatory
Name of Lender:	ARES INSTITUTIONAL LOAN FUND B.V.
by	Ares Management Limited, its Investment Advisor
	/s/ Americo Cascella
	Name: Americo Cascella
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ARES XII CLO LTD.
by	Ares CLO Management XII, L.P.
by	Ares CLO GP XII, LLC, its General Partner
by	Ares Management LLC, its Manger
	/s/ Americo Cascella
	Name: Americo Cascella
	Title:   Authorized Signatory
Name of Lender:	ARES ENHANCED LOAN INVESTMENT STRATEGY II, LTD.
by	Ares Enhanced Loan Management II, L.P., Investment Manager
by	Ares Enhanced Loan GP II, LLC, its General Partner
	/s/ Americo Cascella
	Name: Americo Cascella
	Title:   Authorized Signatory
Name of Lender:	FUTURE FUND BOARD OF GUARDIANS
by	Ares Enhanced Loan Investment Strategy Advisor IV, L.P., its Investment Manager
by	Ares Enhanced Loan Investment Strategy Advisor IV, LLC., its General Partner

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

by	Ares Management LLC, its Managing Member
	/s/ Americo Cascella
	Name: Americo Cascella
	Title:   Authorized Signatory
Name of Lender:	ARES XI CLO LTD.
by	Ares CLO Management XI, L.P.
by	Ares CLO GP XI, LLC, its General Partner
by	Ares Management LLC, its Manager
	/s/ Americo Cascella
	Name: Americo Cascella
	Title:   Authorized Signatory
Name of Lender:	ARES X CLO LTD.
by	Ares CLO Management X, L.P., Investment Manager
by	Ares CLO GP X, LLC, its General Partner
	/s/ Americo Cascella
	Name: Americo Cascella
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ARES IIR CLO LTD.
by	Ares CLO Management IIR, L.P., Investment Manager
by	Ares CLO GP IIR, LLC, its General Partner
	/s/ Americo Cascella
	Name: Americo Cascella
	Title:   Authorized Signatory
Name of Lender:	ARES VR CLO LTD.
by	Ares CLO Management VR, L.P., Investment Manager
by	Ares CLO GP VR, LLC, its General Partner
	/s/ Americo Cascella
	Name: Americo Cascella
	Title:   Authorized Signatory
Name of Lender:	ARES VIII CLO LTD.
by	Ares CLO Management VIII, L.P., Investment Manager
by	Ares CLO GP VIII, LLC, its General Partner
	/s/ Americo Cascella
	Name: Americo Cascella
	Title:   Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GLOBAL LOAN OPPORTUNITY FUND B.V.
by	Ares Management Limited, its Portfolio Manager
	/s/ Americo Cascella
	Name: Americo Cascella
	Title: Authorized Signatory
Name of Lender:	ARES IIIR/IVR CLO LTD.
by	Ares CLO Management IIIR/IVR, L.P.
by	Ares CLO GP IIIR/IVR, LLC, its General Partner
by	Ares Management LLC, its Manager
	/s/ Americo Cascella
	Name: Americo Cascella
	Title: Authorized Signatory
Name of Lender:	ARES VIR CLO LTD.
by	Ares CLO Management VIR, L.P., Investment Manager
by	Ares CLO GP VIR, LLC, its General Manager
	/s/ Americo Cascella
	Name: Americo Cascella
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ARES IX CLO LTD.
by	Ares CLO Management IX, L.P., Investment Manager
by	Ares CLO GP IX, LLC, its General Partner
by	Ares Management LLC, its Managing Member
	/s/ Americo Cascella
	Name: Americo Cascella
	Title: Authorized Signatory
Name of Lender:	SEI INSTITUTIONAL INVESTMENT TRUST — HIGH YIELD BOND FUND
by	Ares Management LLC, as Sub-Adviser
	/s/ Americo Cascella
	Name: Americo Cascella
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	COLUMBUSNOVA CLO LTD. 2006-II
by	/s/ John Bengough
	Name: John Bengough
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	COLUMBUSNOVA CLO LTD. 2007-I
by	/s/ John Bengough
	Name: John Bengough
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	COLUMBUSNOVA CLO IV LTD. 2007-II
by	/s/ John Bengough
	Name: John Bengough
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	EAGLE CREEK CLO LTD.
by	/s/ Bryan Higgins
	Name: Bryan Higgins
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	FALL CREEK CLO, LTD.
by	/s/ Bryan Higgins
	Name: Bryan Higgins
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CLYDESDALE CLO 2003 LTD.
by	Nomura Corporate Research and Asset Management Inc., as Collateral Manager
	/s/ Robert Hoffman
	Name: Robert Hoffman
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CLYDESDALE CLO 2004, LTD.
by	Nomura Corporate Research and Asset Management Inc., as Investment Manager
	/s/ Robert Hoffman
	Name: Robert Hoffman
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CLYDESDALE STRATEGIC CLO I, LTD.
by	Nomura Corporate Research and Asset Management Inc., as Investment Manager
	/s/ Robert Hoffman
	Name: Robert Hoffman
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CLYDESDALE 2005, LTD.
by	Nomura Corporate Research and Asset Management Inc., as Investment Manager
	/s/ Robert Hoffman
	Name: Robert Hoffman
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CLYDESDALE CLO 2006, LTD.
by	Nomura Corporate Research and Asset Management Inc., as Investment Manager
by	/s/ Robert Hoffman
	Name: Robert Hoffman
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CLYDESDALE CLO 2007, LTD.
by	Nomura Corporate Research and Asset Management Inc., as Investment Manager
	/s/ Robert Hoffman
	Name: Robert Hoffman
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	NCRAM LOAN TRUST
by	Nomura Corporate Research and Asset Management Inc., as Investment Adviser
	/s/ Robert Hoffman
	Name: Robert Hoffman
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	NCRAM SENIOR LOAN TRUST - 2005
by	Nomura Corporate Research and Asset Management Inc., as Investment Adviser
	/s/ Robert Hoffman
	Name: Robert Hoffman
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PIMCO HIGH YIELD FUND
by	Pacific Investment Management Company LLC, as its Investment Advisor for the PIMCO High Yield Fund, acting through Investors Fiduciary Trust Company in the Nominee Name of IFTCO
by	/s/ Arthur Y.D. Ong
	Name: Arthur Y.D. Ong
	Title: Executive Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ING PIMCO HIGH YIELD PORTFOLIO
by	Pacific Investment Management Company LLC, as its Investment Advisor
	/s/ Arthur Y.D. Ong
	Name: Arthur Y.D. Ong
	Title: Executive Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	RED RIVER HYPI, L.P.
by	Pacific Investment Management Company LLC, as its Investment Advisor, acting through Investors Fiduciary Trust Company in the Nominee Name of IFTCO
	/s/ Arthur Y.D. Ong
	Name: Arthur Y.D. Ong
	Title: Executive Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	VICTORIA FALLS CLO, LTD.
by	/s/ Kim Atkinson
	Name: Kim Atkinson
	Title: Sr. Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	SUMMIT LAKE CLO, LTD.
by	/s/ Kim Atkinson
	Name: Kim Atkinson
	Title: Sr. Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CLEAR LAKE CLO, LTD.
by	/s/ Kim Atkinson
	Name: Kim Atkinson
	Title: Sr.Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ST. JAMES RIVER CLO, LTD.
by	/s/ Kim Atkinson
	Name: Kim Atkinson
	Title: Sr. Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	SSGA HIGH YIELD BOND FUND
by	/s/ Kali Ramachandran
	Name: Kali Ramachandran
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	RBC DEXIA INVESTOR SERVICES TRUST AS TRUSTEE FOR GM CANADA FOREIGN TRUST
by	/s/ Sherri Smulewicz
	Name: Sherri Smulewicz
	Title: Client Service Manager
	/s/ John P. Nolan
	Name: John P. Nolan
	Title: Senior Manager, Client Service RBC Dexia           Investor Services Trust

In connection with the amendment of Quicksilver the bank loan the Trustee is hereby instructed to enter into and execute the Amendment Agreement any other documents or instruments as may be ancillary to the Transaction and the Trustee is hereby authorized to carry out its obligations there under.

	LEHMAN BROTHERS ASSET MANAGEMENT LLC
by	/s/ Jonathan S. Cook
	Name: Jonathan S. Cook
	Title: Lehman Brothers Asset Management LLC

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CREDIT SUISSE SYNDICATED LOAN FUND.
by	Credit Suisse Alternative Capital, Inc., as Agent (Subadvisor) for Credit Suisse Asset Management (Australia) Limited, the Responsible Entity for Credit Suisse Syndicated Loan Fund
	/s/ Thomas Flannery
	Name: Thomas Flannery
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CSAM FUNDING I
by	/s/ Thomas Flannery
	Name: Thomas Flannery
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ORIX FINANCE CORP.
by	/s/ Christopher L. Smith
	Name: Christopher L. Smith
	Title: Authorized Representative

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	IRON HILL CLO LIMITED
by	/s/ Adrian Duffy
	Name: Adrian Duffy
	Title: Senior Managing Director Guggenheim           Partners Europe Limited

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	HARBOURVIEW CLO 2006-1
by	/s/ Brad Hebert
	Name: Brad Hebert
	Title: AVP

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	VISTA LEVERAGED INCOME FUND
by	MJX LLC, its Investment Advisor
	/s/ John P. Calaba
	Name: John P. Calaba
	Title: Managing Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	WHITE HORSE III, LTD.
by	White Horse Capital Partners, LP, as Collateral Manager
by	White Rock Asset Advisor, LLC, its General Partner
	/s/ Ethan M. Underwood, CFA
	Name: Ethan M. Underwood, CFA
	Title: Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	WHITE HORSE IV, LTD.
by	White Horse Capital Partners, LP, as Collateral Manager
by	White Rock Asset Advisor, LLC, its General Partner
	/s/ Ethan M. Underwood, CFA
	Name: Ethan M. Underwood, CFA
	Title: Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LANDMARK III CDO LIMITED
by	Alladin Capital Management LLC, as Manager
	/s/ William W. Lowry, CFA
	Name: William W. Lowry, CFA
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LANDMARK IV CDO LIMITED
by	Alladin Capital Management LLC, as Manager
	/s/ William W. Lowry, CFA
	Name: William W. Lowry, CFA
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LANDMARK V CDO LIMITED
by	Alladin Capital Management LLC, as Manager
	/s/ William W. Lowry, CFA
	Name: William W. Lowry, CFA
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GREYMARK CDO LTD.
by	Alladin Capital Management LLC, as Manager
	/s/ William W. Lowry, CFA
	Name: William W. Lowry, CFA
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LANDMARK VII CDO LIMITED
by	Alladin Capital Management LLC, as Manager
	/s/ William W. Lowry, CFA
	Name: William W. Lowry, CFA
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LANDMARK VIII CDO LIMITED
by	Alladin Capital Management LLC, as Manager
	/s/ William W. Lowry, CFA
	Name: William W. Lowry, CFA
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LANDMARK IX CDO LTD
by	Alladin Capital Management LLC, as Manager
	/s/ William W. Lowry, CFA
	Name: William W. Lowry, CFA
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CREDIT SUISSE LOAN FUNDING LLC
by	/s/ Kenneth Hoffman
	Name: Kenneth Hoffman
	Title: Managing Director
	/s/ Robert Healey
	Name: Robert Healey
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	EMPLOYERS INSURANCE COMPANY OF WAUSAU
by	/s/ Sheila Finnerty
	Name: Sheila Finnerty
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LIBERTY MUTUAL FIRE INSURANCE COMPANY
by	/s/ Sheila Finnerty
	Name: Sheila Finnerty
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LIBERTY MUTUAL INSURANCE COMPANY
by	/s/ Sheila Finnerty
	Name: Sheila Finnerty
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LOAN FUNDING XIII for itself or as agent for
by	CORPORATE FUNDING XIII, as a Lender
	/s/ Brian C. Carlson
	Name: Brian C. Carlson
	Title: Principal Silvermine Capital Management, LLC

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	COMSTOCK FUNDING LTD.
by	Silvermine Capital Management LLC, as Collateral Manager
	/s/ Brian C. Carlson
	Name: Brian C. Carlson
	Title: Principal Silvermine Capital Management, LLC

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CANNINGTON FUNDING LTD.
by	Silvermine Capital Management LLC, as Investment Manager
	/s/ Brian C. Carlson
	Name: Brian C. Carlson
	Title: Principal Silvermine Capital Management, LLC

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GREENS CREEK FUNDING LTD.
by	Silvermine Capital Management LLC, as Investment Manager
	/s/ Brian C. Carlson
	Name: Brian C. Carlson
	Title: Principal Silvermine Capital Management, LLC

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ECP CLO 2008-1, LTD.
by	Silvermine Capital Management LLC, as Portfolio Manager
	/s/ Brian C. Carlson
	Name: Brian C. Carlson
	Title: Principal Silvermine Capital Management, LLC

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	WESTERN ASSET FLOATING RATE HIGH INCOME FUND, LLC
by	/s/ Chloé M. Page
	Name: Chloé M. Page
	Title: Authorized Signatory
Name of Lender:	JOHN HANCOCK FUND II FLOATING RATE INCOME FUND
by	/s/ Chloé M. Page
	Name: Chloé M. Page
	Title: Authorized Signatory
Name of Lender:	JOHN HANCOCK TRUST FLOATING RATE INCOME TRUST
by	/s/ Chloé M. Page
	Name: Chloé M. Page
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	TCW ABSOLUTE RETURN CREDIT FUND, L.P.
by	TCW Asset Management Company, its Investment Manager
	/s/ Melissa V. Weiler
	Name: Melissa V. Weiler
	Title: Managing Director
	/s/ Steven M. Koehler
	Name: Steven M. Koehler
	Title: Senior Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CELERITY CLO LIMITED
by	TCW Asset Management Company, as Agent
	/s/ Stephen Suo
	Name: Stephen Suo
	Title: Senior Vice President
	/s/ G. Wayne Hosang
	Name: G. Wayne Hosang
	Title: Senior Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ILLINOIS STATE BOARD OF INVESTMENT
by	TCW Asset Management Company, as its Investment Advisor
	/s/ Stephen Suo
	Name: Stephen Suo
	Title: Senior Vice President
	/s/ G. Wayne Hosang
	Name: G. Wayne Hosang
	Title: Senior Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	MAC CAPITAL, LTD.
by	TCW Asset Management Company, as its Portfolio Manager
	/s/ Stephen Suo
	Name: Stephen Suo
	Title: Senior Vice President
	/s/ G. Wayne Hosang
	Name: G. Wayne Hosang
	Title: Senior Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	MOMENTUM CAPITAL FUND, LTD.
by	TCW Asset Management Company, as its Portfolio Manager
	/s/ Stephen Suo
	Name: Stephen Suo
	Title: Senior Vice President
	/s/ G. Wayne Hosang
	Name: G. Wayne Hosang
	Title: Senior Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	RGA REINSURANCE COMPANY
by	TCW Asset Management Company, as its Investment Advisor
	/s/ Stephen Suo
	Name: Stephen Suo
	Title: Senior Vice President
	/s/ G. Wayne Hosang
	Name: G. Wayne Hosang
	Title: Senior Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	TCW CREDIT OPPORTUNITIES FUND, L.P.
by	TCW Asset Management Company, as Manager
	/s/ Stephen Suo
	Name: Stephen Suo
	Title: Senior Vice President
	/s/ G. Wayne Hosang
	Name: G. Wayne Hosang
	Title: Senior Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	TCW SENIOR SECURED FLOATING RATE LOAN FUND, L.P.
by	TCW Asset Management Company, as its Investment
	/s/ Stephen Suo
	Name: Stephen Suo
	Title: Senior Vice President
	/s/ G. Wayne Hosang
	Name: G. Wayne Hosang
	Title: Senior Vice President
Name of Lender:	TCW SENIOR SECURED LOAN FUND, L.P.
by	TCW Asset Management Company, as its Investment Advisor
	/s/ Stephen Suo
	Name: Stephen Suo
	Title: Senior Vice President
	/s/ G. Wayne Hosang
	Name: G. Wayne Hosang
	Title: Senior Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	VELOCITY CLO LIMITED
by	TCW Asset Management Company, as Collateral Manager
	/s/ Stephen Suo
	Name: Stephen Suo
	Title: Senior Vice President
	/s/ G. Wayne Hosang
	Name: G. Wayne Hosang
	Title: Senior Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	VITESSEE CLO LIMITED
by	TCW Asset Management Company, as Portfolio Manager
	/s/ Stephen Suo
	Name: Stephen Suo
	Title: Senior Vice President
	/s/ G. Wayne Hosang
	Name: G. Wayne Hosang
	Title: Senior Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	TRANSAMERICA PARTNERS HIGH YIELD BOND PORTFOLIO
by	/s/ Michael W. Weilheimer
	Name: Michael W. Weilheimer
	Title:

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	EATON VANCE EMERALD U.S. HIGH YIELD BOND FUND
by	/s/ Michael W. Weilheimer
	Name: Michael W. Weilheimer
	Title:

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	INTERNATIONAL UNION OF OPERATING ENGINEERS OF EASTERN PENNSYLVANIA AND DELAWARE
by	/s/ Michael W. Weilheimer
	Name: Michael W. Weilheimer
	Title:

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	EATON VANCE COLLECTIVE INVESTMENT TRUST FOR EBP PLANS — HIGH YIELD FUND
by	/s/ Michael W. Weilheimer
	Name: Michael W. Weilheimer
	Title:

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	HIGH INCOME OPPORTUNITIES PORTFOLIO
by	/s/ Michael W. Weilheimer
	Name: Michael W. Weilheimer
	Title:

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	BOSTON INCOME PORTFOLIO
by	/s/ Michael W. Weilheimer
	Name: Michael W. Weilheimer
	Title:

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PLYMOUTH COUNTY RETIREMENT ASSOCIATION
by	/s/ Michael W. Weilheimer
	Name: Michael W. Weilheimer
	Title:

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
by	/s/ Michael W. Weilheimer
	Name: Michael W. Weilheimer
	Title:

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	T. ROWE PRICE INSTITUTIONAL HIGH YIELD FUND
by	T. Rowe Price Associates, Inc. as investment advisor or investment sub-advisor, as applicable
	/s/ Jonathan D. Siegel
	Name: Jonathan D. Siegel
	Title: Vice President
Name of Lender:	T. ROWE PRICE INSTITUTIONAL FLOATING RATE FUND
by	T. Rowe Price Associates, Inc. as investment advisor or investment sub-advisor, as applicable
	/s/ Jonathan D. Siegel
	Name: Jonathan D. Siegel
	Title: Vice President
Name of Lender:	T. ROWE PRICE HIGH YIELD FUND, INC.
by	T. Rowe Price Associates, Inc. as investment advisor or investment sub-advisor, as applicable
	/s/ Jonathan D. Siegel
	Name: Jonathan D. Siegel
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LUCENT TECHNOLOGIES INC. MASTER PENSION TRUST
by	T. Rowe Price Associates, Inc. as investment advisor or investment sub-advisor, as applicable
	/s/ Jonathan D. Siegel
	Name: Jonathan D. Siegel
	Title: Vice President
Name of Lender:	JOHN HANCOCK TRUST — SPECTRUM INCOME TRUST
by	T. Rowe Price Associates, Inc. as investment advisor or investment sub-advisor, as applicable
	/s/ Jonathan D. Siegel
	Name: Jonathan D. Siegel
	Title: Vice President
Name of Lender:	JOHN HANCOCK TRUST II — SPECTRUM INCOME FUND
by	T. Rowe Price Associates, Inc. as investment advisor or investment sub-advisor, as applicable
	/s/ Jonathan D. Siegel
	Name: Jonathan D. Siegel
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	IAM NATIONAL PENSION FUND
by	T. Rowe Price Associates, Inc. as investment advisor or investment sub-advisor, as applicable
	/s/ Jonathan D. Siegel
	Name: Jonathan D. Siegel
	Title: Vice President
Name of Lender:	BOARD OF PENSIONS OF THE EVANGELICAL LUTHERAN CHURCH IN AMERICA
by	T. Rowe Price Associates, Inc. as investment advisor or investment sub-advisor, as applicable
	/s/ Jonathan D. Siegel
	Name: Jonathan D. Siegel
	Title: Vice President
Name of Lender:	ACE TEMPEST LIFE REINSURANCE LIMITED
by	T. Rowe Price Associates, Inc. as investment advisor or investment sub-advisor, as applicable
	/s/ Jonathan D. Siegel
	Name: Jonathan D. Siegel
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ACE TEMPEST REINSURANCE LIMITED
by	T. Rowe Price Associates, Inc. as investment advisor or investment sub-advisor, as applicable
	/s/ Jonathan D. Siegel
	Name: Jonathan D. Siegel
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	SILVER CREST CBNA LOAN FUNDING LLC
by	/s/ Adam Jacobs
	Name: Adam Jacobs
	Title: Assistant Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GRAND CENTRAL ASSET TRUST, WAM SERIES
by	/s/ Andrew Valko
	Name: Andrew Valko
	Title: Assistant Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	AIMCO CLO, SERIES 2005-A
by	/s/ Chris Goergen
	Name: Chris Goergen
	Title: Authorized Signatory
by	/s/ Thomas Napholz
	Name: Thomas Napholz
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	AIMCO CLO, SERIES 2006-A
by	/s/ Chris Goergen
	Name: Chris Goergen
	Title: Authorized Signatory
by	/s/ Thomas Napholz
	Name: Thomas Napholz
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ALLSTATE LIFE INSURANCE COMPANY
by	/s/ Chris Goergen
	Name: Chris Goergen
	Title: Authorized Signatory
by	/s/ Thomas J. Napholz
	Name: Thomas J. Napholz
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ALLSTATE INSURANCE COMPANY
by	/s/ Chris Goergen
	Name: Chris Goergen
	Title: Authorized Signatory
by	/s/ Thomas J. Napholz
	Name: Thomas J. Napholz
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	MERITAGE FUND LTD
by	/s/ Nat Simons
	Name: Nat Simons
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CALLIDUS DEBT PARTNERS CLO FUND II, LTD.
by	Its Collateral Manager, Callidus Capital Management, LLC
	/s/ Ira Ginsburg
	Name: Ira Ginsburg
	Title: Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CALLIDUS DEBT PARTNERS CLO FUND III, LTD.
by	Its Collateral Manager, Callidus Capital Management, LLC
	/s/ Ira Ginsburg
	Name: Ira Ginsburg
	Title: Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CALLIDUS DEBT PARTNERS CLO FUND IV, LTD.
by	Its Collateral Manager, Callidus Capital Management, LLC
	/s/ Ira Ginsburg
	Name: Ira Ginsburg
	Title: Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CALLIDUS DEBT PARTNERS CLO FUND V, LTD.
by	Its Collateral Manager, Callidus Capital Management, LLC
	/s/ Ira Ginsburg
	Name: Ira Ginsburg
	Title: Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CALLIDUS DEBT PARTNERS CLO FUND VI, LTD.
by	Its Collateral Manager, Callidus Capital Management, LLC
	/s/ Ira Ginsburg
	Name: Ira Ginsburg
	Title: Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CALLIDUS DEBT PARTNERS CLO FUND VII, LTD.
by	Its Collateral Manager, Callidus Capital Management, LLC
	/s/ Ira Ginsburg
	Name: Ira Ginsburg
	Title: Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: MAPS	CLO FUND I, LTD.
by	Its Collateral Manager, Callidus Capital Management, LLC
	/s/ Ira Ginsburg
	Name: Ira Ginsburg
	Title: Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	MAPS CLO FUND II, LTD.
by	Its Collateral Manager, Callidus Capital Management, LLC
	/s/ Ira Ginsburg
	Name: Ira Ginsburg
	Title: Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GULF STREAM-COMPASS CLO 2002-1 LTD
by	Gulf Stream Asset Management LLC, as Collateral Manager
	/s/ Mark Abraham
	Name: Mark Abraham
	Title: Head of Trading
Name of Lender:	GULF STREAM-COMPASS CLO 2003-1 LTD
by	Gulf Stream Asset Management LLC, as Collateral Manager
	/s/ Mark Abraham
	Name: Mark Abraham
	Title: Head of Trading
Name of Lender:	GULF STREAM-COMPASS CLO 2005-II LTD
by	Gulf Stream Asset Management LLC, as Collateral Manager
	/s/ Mark Abraham
	Name: Mark Abraham
	Title: Head of Trading

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GULF STREAM-COMPASS CLO 2007, LTD.
by	Gulf Stream Asset Management LLC, as Collateral Manager
	/s/ Mark Abraham
	Name: Mark Abraham
	Title: Head of Trading

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ABERDEEN HIGH YIELD FIXED INCOME PORTFOLIO, a series of Aberdeen Fixed Income Funds Pooled Trust
by	/s/ Neal Rayner
	Name: Neal Rayner
	Title: Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	ABERDEEN HIGH YIELD FIXED INCOME FUND, a series of Aberdeen Fixed Income Funds LLC
by	/s/ Neal Rayner
	Name: Neal Rayner
	Title: Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	FLAGSHIP CLO III
by	Deutsche Investment Management Americas, Inc. (as successor in interest to Deutsche Asset Management, Inc.), as Collateral Manager
	/s/ Colleen Cunniffe Name: Colleen Cunniffe
	Title: Manager Director
by	/s/ James Sivigny Name: James Sivigny
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	LORD ABBETT INVESTMENT TRUST – LORD ABBETT FLOATING RATE FUND
by	/s/ Elizabeth Mack
	Name: Elizabeth Mack
	Title: Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	WELLS FARGO ENERGY CAPITAL, INC.
by	/s/ Bryan McDavid
	Name: Bryan McDavid
	Title: Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GOLDEN KNIGHT II CLO, LTD.
by	Lord Abbett & Co. LLC As Collateral Manager
	/s/ Elizabeth Mack
	Name: Elizabeth Mack
	Title: Portfolio Manager

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	BARCLAYS BANK PLC
by	/s/ Alex Stromberg
	Name: Alex Stromberg
	Title:

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	FRASER SULLIVAN CLO I LTD.
by	Fraser Sullivan Investment Management, LLC, as Collateral Manager
	/s/ John W. Fraser
	Name: John W. Fraser
	Title: Managing Partner

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	FRASER SULLIVAN CLO II LTD.
by	Fraser Sullivan Investment Management, LLC, as Collateral Manager
	/s/ John W. Fraser
	Name: John W. Fraser
	Title: Managing Partner

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	FRASER SULLIVAN CREDIT STRATEGIES FUNDING LTD.
by	Fraser Sullivan Investment Management, LLC, as Ramp-Up Investment Manager
	/s/ John W. Fraser
	Name: John W. Fraser
	Title: Managing Partner

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	BALLYROCK CLO II LIMITED
by	Ballyrock Investment Advisors LLC, as Collateral Manager
	/s/ Lisa Rymut
	Name: Lisa Rymut
	Title: Assistant Treasurer

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	BALLYROCK CLO III LIMITED
by	Ballyrock Investment Advisors LLC, as Collateral Manager
	/s/ Lisa Rymut
	Name: Lisa Rymut
	Title: Assistant Treasurer

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	BALLYROCK CLO 2006-1 LIMITED
by	Ballyrock Investment Advisors LLC, as Collateral Manager
	/s/ Lisa Rymut
	Name: Lisa Rymut
	Title: Assistant Treasurer

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	BALLYROCK CLO 2006-2 LIMITED
by	Ballyrock Investment Advisors LLC, as Collateral Manager
	/s/ Lisa Rymut
	Name: Lisa Rymut
	Title: Assistant Treasurer

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	PYRAMIS FLOATING RATE HIGH INCOME COMMINGLED POOL
by	Pyramis Global Advisors Trust Company as Trustee
	/s/ Lynn M. Farrand
	Name: Lynn M. Farrand
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	FIDELITY CENTRAL INVESTMENT PORTFOLIOS LLC: FIDELITY FLOATING RATE CENTRAL INVESTMENT PORTFOLIO
by	/s/ Gary Ryan
	Name: Gary Ryan
	Title: Assistant Treasurer

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	FIDELITY AMERICAN HIGH YIELD FUND, for Fidelity Investments Canada, Limited, as Trustee of
by	/s/ Gary Ryan
	Name: Gary Ryan
	Title: Assistant Treasurer

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	FIDELITY ADVISOR SERIES I: FIDELITY ADVISOR FLOATING RATE HIGH INCOME FUND
by	/s/ Gary Ryan
	Name: Gary Ryan
	Title: Assistant Treasurer

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	FIDELITY CANADIAN BALANCED FUND, for Fidelity Investments Canada, Limited, as Trustee of
by	/s/ Gary Ryan
	Name: Gary Ryan
	Title: Assistant Treasurer

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	RIVERSOURCE BOND SERIES, INC. – RIVERSOURCE FLOATING RATE FUND
by	/s/ Robin C. Stancil
	Name: Robin C. Stancil
	Title: Assistant Vice President

Name of Lender:	RIVERSOURCE STRATEGIC ALLOCATION SERIES, INC. – RIVERSOURCE STRATEGIC INCOME ALLOCATION FUND
by	/s/ Robin C. Stancil
	Name: Robin C. Stancil
	Title: Assistant Vice President

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CENTURION CDO VI, LIMITED
by	Riversource Investments, LLC, as Collateral Manager
	/s/ Robin C. Stancil
	Name: Robin C. Stancil
	Title: Director of Operations

Name of Lender:	CENTURION CDO VII, LIMITED
by	Riversource Investments, LLC, as Collateral Manager
	/s/ Robin C. Stancil
	Name: Robin C. Stancil
	Title: Director of Operations

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	CENTURION CDO 8, LIMITED
by	Riversource Investments, LLC, as Collateral Manager
	/s/ Robin C. Stancil
	Name: Robin C. Stancil
	Title: Director of Operations

Name of Lender:	CENTURION CDO 9, LIMITED
by	Riversource Investments, LLC, as Collateral Manager
	/s/ Robin C. Stancil
	Name: Robin C. Stancil
	Title: Director of Operations

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: CENT CDO 10 LIMITED

by	RiverSource Investments, LLC, as Collateral Manager
	/s/ Robin C. Stancil Name: Robin C. Stancil
	Title: Director of Operations

Name of Lender: CENT CDO XI, LIMITED

by	RiverSource Investments, LLC, as Collateral Manager
	/s/ Robin C. Stancil Name: Robin C. Stancil
	Title: Director of Operations

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: CENT CDO 12 LIMITED

by	Riversource Investments, LLC, as Collateral Manager
	/s/ Robin C. Stancil Name: Robin C. Stancil
	Title: Director of Operations

Name of Lender: CENT CDO 14 LIMITED

by	Riversource Investments, LLC, as Collateral Manager
	/s/ Robin C. Stancil Name: Robin C. Stancil
	Title: Director of Operations

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: CENT CDO 15 LIMITED

by	RiverSource Investments, LLC as Collateral Manager
	/s/ Robin C. Stancil Name: Robin C. Stancil
	Title: Director of Operations

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: NATIONWIDE LIFE INSURANCE COMPANY

by	/s/ Ronald R. Serpico Name: Ronald R. Serpico
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: NAVIGATOR CDO 2004, LTD., as a Lender

by	GE Asset Management Inc., as Collateral Manager
	/s/ Kathleen Brooks Name: Kathleen Brooks
	Title: Authorized Signatory

Name of Lender: NAVIGATOR CDO 2005, LTD., as a Lender

by	GE Asset Management Inc., as Collateral Manager
	/s/ Kathleen Brooks Name: Kathleen Brooks
	Title: Authorized Signatory

Name of Lender: NAVIGATOR CDO 2006, LTD., as a Lender

by	GE Asset Management Inc., as Collateral Manager
	/s/ Kathleen Brooks Name: Kathleen Brooks
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: GENERAL ELECTRIC PENSION TRUST, as a Lender

by	GE Asset Management Inc., as Collateral Manager
	/s/ Kathleen Brooks Name: Kathleen Brooks
	Title: Authorized Signatory

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: SUNAMERICA SENIOR FLOATING RATE FUND, INC.

by	AIG Global Investment Corp. Investment Sub-Advisor
	/s/ W. Jeffrey Baxter Name: W. Jeffrey Baxter
	Title: Managing Director

Name of Lender: SATURN CLO, LTD.

by	AIG Global Investment Corp., its Collateral Manager
	/s/ W. Jeffrey Baxter Name: W. Jeffrey Baxter
	Title: Managing Director

Name of Lender: GALAXY CLO 2003-1, LTD.

by	AIG Global Investment Corp., its Collateral Manager
	/s/ W. Jeffrey Baxter Name: W. Jeffrey Baxter
	Title: Managing Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: GALAXY III CLO, LTD.

by	AIG Global Investment Corp., its Collateral Manager
	/s/ W. Jeffrey Baxter Name: W. Jeffrey Baxter
	Title: Managing Director

Name of Lender: GALAXY IV CLO, LTD.

by	AIG Global Investment Corp., its Collateral Manager
	/s/ W. Jeffrey Baxter Name: W. Jeffrey Baxter
	Title: Managing Director

Name of Lender: GALAXY V CLO, LTD.

by	AIG Global Investment Corp., its Collateral Manager
	/s/ W. Jeffrey Baxter Name: W. Jeffrey Baxter
	Title: Managing Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: GALAXY VI CLO, LTD.

by	AIG Global Investment Corp., its Collateral Manager
	/s/ W. Jeffrey Baxter Name: W. Jeffrey Baxter
	Title: Managing Director

Name of Lender: GALAXY VII CLO, LTD.

by	AIG Global Investment Corp., its Collateral Manager
	/s/ W. Jeffrey Baxter Name: W. Jeffrey Baxter
	Title: Managing Director

Name of Lender: GALAXY VIII CLO, LTD.

by	AIG Global Investment Corp., its Collateral Manager
	/s/ W. Jeffrey Baxter Name: W. Jeffrey Baxter
	Title: Managing Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: GALAXY X CLO, LTD.

by	AIG Global Investment Corp., its Collateral Manager
	/s/ W. Jeffrey Baxter Name: W. Jeffrey Baxter
	Title: Managing Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: JACKSON NATIONAL LIFE INSURANCE COMPANY

by	PPM AMERICA, INC., as Attorney-in Fact
	/s/ David C. Wagner Name: David C. Wagner
	Title: Managing Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: CIFC FUNDING 2006-IB, LTD.

by	/s/ Steve Vaccaro Name: Steve Vaccaro
	Title: Co-Chief Investment Officer

Name of Lender: CIFC FUNDING 2006-II, LTD.

by	/s/ Steve Vaccaro Name: Steve Vaccaro
	Title: Co-Chief Investment Officer

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: CIFC FUNDING 2007-I, LTD.

by	/s/ Steve Vaccaro Name: Steve Vaccaro
	Title: Co-Chief Investment Officer

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: FLAGSHIP CLO IV

by	Deutsche Investment Management Americas, Inc. (as successor in interest to Deutsche Asset Management, Inc.), as Collateral Manager
	/s/ Eric S. Meyer Name: Eric S. Meyer
	Title: Managing Director

by	/s/ James Sivigny Name: James Sivigny
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: FLAGSHIP CLO V

by	Deutsche Investment Management Americas, Inc. (as successor in interest to Deutsche Asset Management, Inc.), as Collateral Manager
	/s/ Eric S. Meyer Name: Eric S. Meyer
	Title: Managing Director

by	/s/ James Sivigny Name: James Sivigny
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: FLAGSHIP CLO VI

by	Deutsche Investment Management Americas, Inc., as Collateral Manager
	/s/ Eric S. Meyer Name: Eric S. Meyer
	Title: Managing Director

by	/s/ James Sivigny Name: James Sivigny
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: DWS FLOATING RATE PLUS FUND

by	Deutsche Investment Management Americas, Inc., Investment Advisor
	/s/ Eric S. Meyer Name: Eric S. Meyer
	Title: Managing Director

by	/s/ James Sivigny Name: James Sivigny
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: DWS SHORT DURATION PLUS FUND

by	Deutsche Investment Management Americas, Inc., Investment Advisor
	/s/ Eric S. Meyer Name: Eric S. Meyer
	Title: Managing Director

by /s/ James Sivigny   Name: James Sivigny
Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: SANDS POINT FUNDING LTD.

by	/s/ Kaitlin Trinh Name: Kaitlin Trinh
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender: COPPER RIVER CLO LTD.

by	/s/ Kaitlin Trinh Name: Kaitlin Trinh
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	GREEN LANE CLO LTD.
by	/s/ Kaitlin Trinh
	Name: Kaitlin Trinh
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	KENNECOTT FUNDING LTD.
by	/s/ Kaitlin Trinh
	Name: Kaitlin Trinh
	Title: Director

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	HALCYON STRUCTURED ASSET MANAGEMENT CLO 2008-II B.V.
by	/s/ David Martino
	Name: David Martino
	Title: Controller
by	/s/ James W. Sykes
	Name: James W. Sykes
	Title: Managing Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	HALCYON STRUCTURED ASSET MANAGERMENT EUROPEAN CLO 2007-I B.V.
by	/s/ David Martino
	Name: David Martino
	Title: Controller
by	/s/ James W. Sykes
	Name: James W. Sykes
	Title: Managing Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	HALCYON LOAN INVESTORS CLO I, LTD.
by	/s/ David Martino
	Name: David Martino
	Title: Controller
by	/s/ James W. Sykes
	Name: James W. Sykes
	Title: Managing Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	HALCYON LOAN IVNESTORS CLO II, LTD.
by	/s/ David Martino
	Name: David Martino
	Title: Controller
by	/s/ James W. Sykes
	Name: James W. Sykes
	Title: Managing Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	HALCYON STRUCTURED ASSET MANAGEMENT CLO I LTD.
by	/s/ David Martino
	Name: David Martino
	Title: Controller
by	/s/ James W. Sykes
	Name: James W. Sykes
	Title: Managing Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	HALCYON STRUCTURED ASSET MANAGEMENT LONG SECURED/SHORT UNSECURED CLO 2006-1 LTD.
by	/s/ David Martino
	Name: David Martino
	Title: Controller
by	/s/ James W. Sykes
	Name: James W. Sykes
	Title: Managing Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	HALCYON STRUCTURED ASSET MANAGEMENT LONG SECURED/SHORT UNSECURED 2007-1 LTD.
by	/s/ David Martino
	Name: David Martino
	Title: Controller
by	/s/ James W. Sykes
	Name: James W. Sykes
	Title: Managing Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	HALCYON STRUCTURED ASSET MANAGEMENT LONG SECURED/SHORT UNSECURED 2007-3 LTD.
by	/s/ David Martino
	Name: David Martino
	Title: Controller
by	/s/ James W. Sykes
	Name: James W. Sykes
	Title: Managing Principal

SIGNATURE PAGE TO AMENDMENT NO 1. TO
CREDIT AGREEMENT DATED AS OF AUGUST 8, 2008, OF
QUICKSILVER RESOURCES INC.

Name of Lender:	HALCYON STRUCTURED ASSET MANAGEMENT LONG SECURED/SHORT UNSECURED 2007-2 LTD.
by	/s/ David Martino
	Name: David Martino
	Title: Controller
by	/s/ James W. Sykes
	Name: James W. Sykes
	Title: Managing Principal