Document:

exv10w7

 

Exhibit 10.7

SIXTH AMENDMENT TO LOAN AGREEMENT

     THIS SIXTH AMENDMENT TO LOAN AGREEMENT (this “Amendment”) is made and entered into as
of this 13th day of September, 2005, by and among THE CIT GROUP/BUSINESS CREDIT, INC., a New York
corporation (“CITBC”), in its individual capacity as a Lender and as Agent for the Lenders
hereinafter named (the “Agent”), WELLS FARGO FOOTHILL, INC., a California corporation
formerly known as Foothill Capital Corporation (“Wells Fargo”), PNC BANK, NATIONAL ASSOCIATION, a
national banking association (“PNC”), and any other party hereafter becoming a Lender pursuant to
Section 12.4(b) of the Loan Agreement (as hereinafter defined), each individually sometimes
referred to as a “Lender” and, collectively, the “Lenders”), GREY WOLF DRILLING
COMPANY L.P., a Texas limited partnership (the “Borrower”), GREY WOLF, INC., a Texas
corporation (the “Parent”), GREY WOLF HOLDINGS COMPANY, a Nevada corporation
(“Holdings”), GREY WOLF LLC, a Louisiana limited liability company (“GWLLC”), DI
ENERGY, INC., a Texas corporation (“Energy”), GREY WOLF INTERNATIONAL, INC., a Texas
corporation (“International”), DI/PERFENSA INC., a Texas corporation (“Perfensa”),
MURCO DRILLING CORPORATION, a Delaware corporation (“Murco”) (Parent, Holdings, GWLLC,
Energy, International, Perfensa and Murco are referred to collectively herein as the
“Guarantors”).

RECITALS

     1. WHEREAS, pursuant to the terms and subject to the conditions of that certain Loan Agreement
dated as of January 14, 1999 among the parties hereto, as amended by that certain First Amendment
to Loan Agreement dated as of December 20, 2001, that certain Second Amendment to Loan Agreement
dated as of February 7, 2003, that certain Third Amendment to Loan Agreement dated as of May 1,
2003, that certain Fourth Amendment to Loan Agreement dated as of March 25, 2004 and effective as
of March 31, 2004, and that certain Fifth Amendment to Loan Agreement dated as of December 31, 2004
(such Loan Agreement, as the same was previously amended, is hereby amended and may hereafter be
amended from time to time, being hereinafter referred to as the “Loan Agreement”), the
Borrower was granted a revolving line of credit which included a letter of credit facility;

     2. WHEREAS, the indebtedness of the Borrower to the Lenders is currently evidenced by that
certain Revolving Note dated December 31, 2004 (the “Revolving Note”), executed by the
Borrower and payable to CITBC as Agent for the benefit of the Lenders in the stated principal
amount of $100,000,000;

     3. WHEREAS, payment of the Obligations of the Borrower are supported by the guarantees of the
Guarantors contained in Section 13 of the Loan Agreement;

     4. WHEREAS, to secure, in part, the indebtedness under the Loan Agreement and the Revolving
Note (and all renewals, extensions, modifications and/or rearrangements thereof and in connection
therewith) and all other indebtedness, liabilities and obligations of the Borrower and the
Guarantors to the Agent for the benefit of the Lenders, then existing or

 

 

thereafter arising, the Borrower and the Guarantors have heretofore executed in favor of the
Agent certain Credit Documents (as defined in the Loan Agreement), including, without limitation,
the Security Documents (as defined in the Loan Agreement), which Credit Documents, as amended in
connection herewith, shall continue in full force and effect upon the execution of this Amendment
and shall continue to secure the payment by the Borrower and the Guarantors of the Obligations (as
defined in the Loan Agreement), all as more fully set forth therein and herein;

     5. WHEREAS, the parties hereto desire to amend the Loan Agreement as hereinafter provided.

     NOW, THEREFORE, in consideration of the premises herein contained and other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the Borrower, the
Guarantors, the Agent and the Lenders, intending to be legally bound, agree as follows:

AGREEMENT

ARTICLE I

Definitions

     1.01 Capitalized terms used in this Amendment are defined in the Loan Agreement, as amended
hereby, unless otherwise stated.

ARTICLE II

Amendments to Loan Agreement

     Effective as of the respective date herein indicated, the Loan Agreement is hereby amended as
follows:

     2.01 Amendment and Restatement of Definition of “Permitted Parent Common Stock
Acquisitions”. Effective as of the date of execution of this Amendment, the definition
“Permitted Parent Common Stock Acquisitions” set forth in Section 10 of the Loan Agreement
is amended and restated to read in its entirety as follows:

“ ‘Permitted Parent Common Stock Acquisitions’ means the purchase by Parent of up to
$150,000,000 of Parent Common Stock after August 15, 2005; provided,
however, (i) the total amount of Permitted Parent Common Stock Acquisitions, the
Permitted Dividends and the Permitted Prepayments after August 15, 2005, may not in the
aggregate exceed $150,000,000, (ii) no Default or Event of Default shall exist at the time
of any such acquisitions, (iii) at least $35,000,000 of Availability exists immediately
after any such acquisitions and (iv) Borrower provides Agent at least three (3) Business
Days prior written notice of any such acquisitions.”

2

 

     2.02 Amendment and Restatement of Definition of “Permitted Prepayments”. Effective as
of the date of execution of this Amendment, the definition “Permitted Prepayments” set forth in
Section 10 of the Loan Agreement is amended and restated to read in its entirety as
follows:

“ ‘Permitted Prepayments’ means the prepayment, after August 15, 2005, in an amount
not to exceed $150,000,000 of (i) the 3.75% Contingent Convertible Senior Notes Due 2023
issued by the Parent in 2003, in the aggregate principal amount of $150,000,000, and (ii)
the Floating Rate Contingent Convertible Senior Notes Due 2024 issued by the Parent in 2004;
provided, however, (i) the total amount of the Permitted Prepayments, the
Permitted Dividends and the Permitted Parent Common Stock Acquisitions after August 15,
2005, may not in the aggregate exceed $150,000,000, (ii) no Default or Event of Default
shall exist at the time of any such prepayments, (iii) at least $35,000,000 of Availability
exists immediately after any such prepayments and (iv) Borrower provides Agent at least
three (3) Business Days prior written notice of any such prepayments.”

     2.03 New Definition. Effective as of the date of execution of this Amendment,
Section 10 of the Loan Agreement is amended by adding thereto the following new definition,
to be inserted in appropriate alphabetical order:

“ ‘Permitted Dividends’ means the payment, after August 15, 2005, of dividends by
Parent to its stockholders in an amount not to exceed $150,000,000; provided,
however, (i) the total amount of the Permitted Dividends, the Permitted Prepayments
and the Permitted Parent Common Stock Acquisitions after August 15, 2005, may not in the
aggregate exceed $150,000,000, (ii) no Default or Event of Default shall exist at the time
of any such payments, (iii) at least $35,000,000 of Availability exists immediately after
any such payments and (iv) Borrower provides Agent at least three (3) Business Days prior
written notice of any such payments.”

     2.04 Amendment and Restatement of Section 8.6 of the Loan Agreement. Effective as of
the date of execution of this Amendment, the parenthetical phrase “(other than a redemption of up
to $306,000 of the Series A Stock and the Permitted Parent Common Stock Acquisitions)” set forth in
Section 8.6 of the Loan Agreement is amended and restated to read in its entirety as
follows:

“(other than a redemption of up to $306,000 of the Series A Stock, the Permitted Parent
Common Stock Acquisitions and Permitted Dividends)”

3

 

ARTICLE III

Conditions Precedent

     3.01 Conditions to Effectiveness. The effectiveness of this Amendment is subject to
the satisfaction of the following conditions precedent in a manner satisfactory to Agent, unless
specifically waived in writing by Agent:

     (a) Agent shall have received each of the following, each in form and substance
satisfactory to Agent, in its sole discretion, and, where applicable, each duly executed by
each party thereto, other than Agent:

     (i) This Amendment, duly executed by the Borrower and the Guarantors;
and

     (iii) All other documents Agent may request with respect to any matter
relevant to this Amendment or the transactions contemplated hereby.

     (b) No Default or Event of Default shall have occurred and be continuing, unless such
Default or Event of Default has been otherwise specifically waived in writing by Agent.

     (c) All corporate proceedings taken in connection with the transactions contemplated by
this Amendment and all documents, instruments and other legal matters incident thereto shall
be satisfactory to Agent.

ARTICLE IV

Ratifications, Representations and Warranties

     4.01 Ratifications. The terms and provisions set forth in this Amendment shall modify
and supersede all inconsistent terms and provisions set forth in the Loan Agreement and the other
Credit Documents, and, except as expressly modified and superseded by this Amendment, the terms and
provisions of the Loan Agreement and the other Credit Documents are ratified and confirmed and
shall continue in full force and effect. The Borrower, Guarantors, Agent and Lenders agree that
the Loan Agreement and the other Credit Documents, as amended hereby, shall continue to be legal,
valid, binding and enforceable in accordance with their respective terms.

     4.02 Representations and Warranties. The Borrower and Guarantor (the “Credit
Parties”) hereby represent and warrant to Agent and the Lenders that (a) the execution,
delivery and performance of this Amendment and any and all other Credit Documents executed and/or delivered in connection herewith have been
authorized by all requisite corporate action on the part of the Credit Parties and will not violate
the organizational documents of the Credit Parties; (b) the Managers or Board of Directors of each
of the Credit Parties (or the Board of Directors of the corporate general partners of any Credit
Party that is a limited partnership) has authorized the

4

 

execution, delivery and performance of this
Amendment and any and all other Credit Documents executed and/or delivered in connection herewith;
(c) the representations and warranties contained in the Loan Agreement, as amended hereby, and any
other Credit Document are true and correct on and as of the date hereof and on and as of the date
of execution hereof as though made on and as of each such date (except to the extent they relate to
a specific date); (d) no Default or Event of Default under the Loan Agreement, as amended hereby,
has occurred and is continuing, unless such Default or Event of Default has been specifically
waived in writing by Agent; (e) the Credit Parties are in full compliance with all covenants and
agreements contained in the Loan Agreement and the other Credit Documents, as amended hereby; and
(f) since the date of the initial closing of the Loan Agreement, the Credit Parties have not
amended their (i) Articles (or Certificates) of Incorporation or their Bylaws, if a corporation,
(ii) limited partnership agreement or certificate of limited partnership, if a limited partnership,
or (iii) Articles of Organization or operating agreement, if a limited liability company, except as
otherwise disclosed to Agent.

ARTICLE V

Miscellaneous Provisions

     5.01 Survival of Representations and Warranties. All representations and warranties
made in the Loan Agreement or any other Credit Document, including, without limitation, any
document furnished in connection with this Amendment, shall survive the execution and delivery of
this Amendment and the other Credit Documents, and no investigation by Agent or any closing shall
affect the representations and warranties or the right of Agent to rely upon them.

     5.02 Reference to Loan Agreement. Each of the Loan Agreement and the other Credit
Documents, and any and all other Credit Documents, documents or instruments now or hereafter
executed and delivered pursuant to the terms hereof or pursuant to the terms of the Loan Agreement,
as amended hereby, are hereby amended so that any reference in the Loan Agreement and such other
Credit Documents to the Loan Agreement shall mean a reference to the Loan Agreement, as amended
hereby.

     5.03 Expenses of Agent. As provided in the Loan Agreement, the Borrower agrees to pay
on demand all reasonable costs and expenses incurred by Agent in connection with the preparation,
negotiation, and execution of this Amendment and the other Credit Documents executed pursuant
hereto and any and all amendments, modifications, and supplements thereto, including, without
limitation, the reasonable costs and fees of Agent’s legal counsel, and all reasonable costs and
expenses incurred by Agent in connection with the enforcement or preservation of any rights under the
Loan Agreement, as amended hereby, or any other Credit Documents, including, without limitation,
the reasonable costs and fees of Agent’s legal counsel.

     5.04
Severability. Any provision of this Amendment held by a court of competent
jurisdiction to be invalid or unenforceable shall not impair or invalidate the remainder of this
Amendment and the effect thereof shall be confined to the provision so held to be invalid or
unenforceable.

5

 

     5.05 Successors and Assigns. This Amendment is binding upon and shall inure to the
benefit of Agent, the Lenders, and the Credit Parties and their respective successors and assigns,
except that the Credit Parties may not assign or transfer any of their rights or obligations
hereunder without the prior written consent of Agent.

     5.06 Counterparts. This Amendment may be executed in one or more counterparts, each of
which when so executed shall be deemed to be an original, but all of which when taken together
shall constitute one and the same instrument.

     5.07 Effect of Waiver. No consent or waiver, express or implied, by Agent to or for
any breach of or deviation from any covenant or condition by the Credit Parties shall be deemed a
consent to or waiver of any other breach of the same or any other covenant, condition or duty.

     5.08 Headings. The headings, captions, and arrangements used in this Amendment are for
convenience only and shall not affect the interpretation of this Amendment.

     5.09 Applicable Law. THIS AMENDMENT AND ALL OTHER CREDIT DOCUMENTS EXECUTED PURSUANT
HERETO SHALL BE DEEMED TO HAVE BEEN MADE AND TO BE PERFORMABLE IN AND SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

     5.10 Final Agreement. THE LOAN AGREEMENT AND THE OTHER CREDIT DOCUMENTS, EACH AS
AMENDED HEREBY, REPRESENT THE ENTIRE EXPRESSION OF THE PARTIES WITH RESPECT TO THE SUBJECT MATTER
HEREOF ON THE DATE THIS AMENDMENT IS EXECUTED. THE LOAN AGREEMENT AND THE OTHER CREDIT DOCUMENTS,
AS AMENDED HEREBY, MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT
ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES. NO
MODIFICATION, RESCISSION, WAIVER, RELEASE OR AMENDMENT OF ANY PROVISION OF THIS AMENDMENT SHALL BE
MADE, EXCEPT BY A WRITTEN AGREEMENT SIGNED BY THE CREDIT PARTIES AND THE AGENT.

     5.11 Financing Statements. Agent is hereby authorized by each of the Credit Parties to
file (including pursuant to the applicable terms of the UCC) from time to time any financing
statements, continuations or amendments covering the Collateral whether or not the signature of any
such Credit Party appears thereon.

     5.12 Release by Borrower. THE BORROWER HEREBY ACKNOWLEDGES THAT BORROWER HAS NO
DEFENSE, COUNTERCLAIM, OFFSET, CROSS-COMPLAINT, CLAIM OR DEMAND OF ANY KIND OR NATURE WHATSOEVER
THAT CAN BE ASSERTED TO REDUCE OR ELIMINATE ALL OR ANY PART OF ITS LIABILITY TO REPAY THE
“OBLIGATIONS” OR TO SEEK AFFIRMATIVE RELIEF OR DAMAGES OF ANY KIND OR NATURE FROM AGENT OR THE
LENDERS. THE BORROWER HEREBY VOLUNTARILY AND KNOWINGLY RELEASES AND FOREVER DISCHARGES AGENT AND
THE LENDERS, AND THEIR RESPECTIVE PREDECESSORS, AGENTS, EMPLOYEES, SUCCESSORS AND ASSIGNS (THE
“RELEASED PARTIES”), FROM ALL POSSIBLE CLAIMS, DEMANDS, ACTIONS, CAUSES OF ACTION, DAMAGES,
COSTS,

6

 

EXPENSES, AND LIABILITIES WHATSOEVER, KNOWN OR UNKNOWN, ANTICIPATED OR UNANTICIPATED,
SUSPECTED OR UNSUSPECTED, FIXED, CONTINGENT, OR CONDITIONAL, AT LAW OR IN EQUITY, ORIGINATING IN
WHOLE OR IN PART ON OR BEFORE THE DATE THIS AMENDMENT IS EXECUTED, WHICH THE BORROWER MAY NOW OR
HEREAFTER HAVE AGAINST THE RELEASED PARTIES, IF ANY, AND IRRESPECTIVE OF WHETHER ANY SUCH CLAIMS
ARISE OUT OF CONTRACT, TORT, VIOLATION OF LAW OR REGULATIONS, OR OTHERWISE, AND ARISING FROM ANY
“LOANS”, INCLUDING, WITHOUT LIMITATION, ANY CONTRACTING FOR, CHARGING, TAKING, RESERVING,
COLLECTING OR RECEIVING INTEREST IN EXCESS OF THE HIGHEST LAWFUL RATE APPLICABLE, THE EXERCISE OF
ANY RIGHTS AND REMEDIES UNDER THE LOAN AGREEMENT OR OTHER CREDIT DOCUMENTS, AND NEGOTIATION FOR AND
EXECUTION OF THIS AMENDMENT.

     5.13 Release by Guarantors. Each Guarantor hereby consents to the terms of this
Amendment, confirms and ratifies the terms of the guarantee by such Guarantor for the benefit of
Agent and the other Lenders set forth in Section 13 of the Loan Agreement (each a
“Guarantee” and collectively the “Guarantees”), and acknowledges that such
Guarantor’s Guarantee is in full force and effect and ratifies the same and that such Guarantor has
no defense, counterclaim, set-off or any other claim to diminish such Guarantor’s liability under its Guarantee.
EACH GUARANTOR HEREBY VOLUNTARILY AND KNOWINGLY RELEASES AND FOREVER DISCHARGES THE RELEASED PARTIES, FROM ALL POSSIBLE CLAIMS,
DEMANDS, ACTIONS, CAUSES OF ACTION, DAMAGES, COSTS, EXPENSES, AND LIABILITIES WHATSOEVER, KNOWN OR
UNKNOWN, ANTICIPATED OR UNANTICIPATED, SUSPECTED OR UNSUSPECTED, FIXED, CONTINGENT, OR CONDITIONAL,
AT LAW OR IN EQUITY, ORIGINATING IN WHOLE OR IN PART ON OR BEFORE THE DATE THIS AMENDMENT IS
EXECUTED, WHICH THE GUARANTORS MAY NOW OR HEREAFTER HAVE AGAINST THE RELEASED PARTIES, IF ANY, AND
IRRESPECTIVE OF WHETHER ANY SUCH CLAIMS ARISE OUT OF CONTRACT, TORT, VIOLATION OF LAW OR
REGULATIONS, OR OTHERWISE, AND ARISING FROM ANY “LOANS”, INCLUDING, WITHOUT LIMITATION, ANY
CONTRACTING FOR, CHARGING, TAKING, RESERVING, COLLECTING OR RECEIVING INTEREST IN EXCESS OF THE
HIGHEST LAWFUL RATE APPLICABLE, THE EXERCISE OF ANY RIGHTS AND REMEDIES UNDER THE LOAN AGREEMENT OR
OTHER CREDIT DOCUMENTS, AND NEGOTIATION FOR AND EXECUTION OF THIS AMENDMENT.

[Remainder of page intentionally left blank; signature page follows]

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     IN WITNESS WHEREOF, this Amendment has been executed and is effective as of the date first
above-written.

	 	 	 	 	 	 	 
	 	 	BORROWER:
	 
	 	 	 	 	 	 
	 	 	GREY WOLF DRILLING COMPANY L.P.
	 
	 	 	 	 	 	 
	 	 	By:	 	Grey Wolf Holdings Company,

its general partner
	 
	 	 	 	 	 	 
	 

	 	 	 	By:	 	 /s/ DAVID W. WEHLMANN
	 

	 	 	 	 	 	 
	 

	 	 	 	 	 	          David W. Wehlmann
	 

	 	 	 	 	 	          Executive Vice President and
	 

	 	 	 	 	 	          Chief Financial Officer
	 
	 	 	 	 	 	 
	 	 	GUARANTORS:
	 
	 	 	 	 	 	 
	 	 	GREY WOLF, INC.
	 	 	GREY WOLF HOLDINGS COMPANY
	 	 	GREY WOLF LLC
	 	 	DI ENERGY, INC.
	 	 	GREY WOLF INTERNATIONAL, INC.
	 	 	DI/PERFENSA INC.
	 	 	MURCO DRILLING CORPORATION
	 
	 	 	 	 	 	 
	 

	 	By:	 	 /s/ DAVID W. WEHLMANN
	 	 	 	 	 
	 	 	 	 	  David W. Wehlmann
	 	 	 	 	  Executive Vice President and
	 	 	 	 	  Chief Financial Officer of each of the

  foregoing entities
	 
	 	 	 	 	 	 
	 	 	LENDERS:

 

 

	 	 	 	 	 
	 	 	THE CIT GROUP/BUSINESS CREDIT, INC.

as Agent and Lender
	 
	 	 	 	 
	 

	 	By:	 	 /s/ ROBYN PINGREE
	 

	 	 	 	 
	 

	 	Name:	 	 Robyn Pingree
	 

	 	 	 	 
	 

	 	Title:	 	 Assistant Vice President
	 

	 	 	 	 
	 
	 	 	 	 
	 	 	Revolving Loan Commitment: $40,000,000

 

 

	 	 	 	 	 
	 	 	WELLS FARGO FOOTHILL, INC., formerly known as

Foothill Capital Corporation,

as Lender
	 
	 	 	 	 
	 

	 	By:	 	/s/ LAN WONG 
	 

	 	 	 	 
	 

	 	Name:	 	Lan Wong 
	 

	 	 	 	 
	 

	 	Title:	 	Vice-President 
	 

	 	 	 	 
	 
	 	 	 	 
	 	 	Revolving Loan Commitment: $35,000,000

 

 

	 	 	 	 	 
	 	 	PNC BANK, NATIONAL ASSOCIATION, as

Lender
	 
	 	 	 	 
	 

	 	By:	 	/s/ MARC MUEHLEMANN 
	 

	 	 	 	 
	 

	 	Name:	 	Marc Muehlemann 
	 

	 	 	 	 
	 

	 	Title:	 	Vice-President 
	 

	 	 	 	 
	 
	 	 	 	 
	 	 	Revolving Loan Commitment: $25,000,000exv10w1

 

Exhibit 10.1

FIVE YEAR CREDIT AGREEMENT

Dated as of September 12, 2005

          LAFARGE NORTH AMERICA INC., a Maryland corporation (the “Company”), LAFARGE CANADA
INC., a Canadian federal corporation (“Lafarge Canada”), the Significant Subsidiaries of
the Company listed on the signature pages hereof (the Company, Lafarge Canada and each such
Significant Subsidiary, an “Initial Borrower” and collectively, the “Initial
Borrowers”), the banks, financial institutions and other institutional lenders (the
“Initial Lenders”) listed on the signature pages hereof, WACHOVIA BANK, NATIONAL
ASSOCIATION, as syndication agent, CITIGROUP GLOBAL MARKETS INC. and WACHOVIA SECURITIES, INC., as
joint lead arrangers and joint bookrunners, and CITIBANK, N.A. (“Citibank”), as
administrative agent (the “Agent”) for the Lenders (as hereinafter defined), agree as
follows:

ARTICLE I

DEFINITIONS AND ACCOUNTING TERMS

               Section 1.01. Certain Defined Terms. As used in this Agreement, the following terms
shall have the following meanings (such meanings to be equally applicable to both the singular and
plural forms of the terms defined):

          “Acceptance Note” shall mean a non-interest bearing promissory note of a
Borrower purchased by a Non-BA Lender.

          “Advance” means a Revolving Credit Advance, a Canadian Advance or a Competitive
Bid Advance.

          “Affiliate” means, as to any Person, any other Person that, directly or
indirectly, controls, is controlled by or is under common control with such Person or is a
director or officer of such Person. For purposes of this definition, the term “control”
(including the terms “controlling”, “controlled by” and “under common control with”) of a
Person means the possession, direct or indirect, of the power to vote 10% or more of the
Voting Stock of such Person or to direct or cause the direction of the management and
policies of such Person, whether through the ownership of Voting Stock, by contract or
otherwise.

          “Agent’s Account” means the accounts of the Agent for purposes of transactions
under this Agreement as are designated in writing from time to time by the Agent to the
Company and the Lenders.

          “Applicable Lending Office” means, with respect to each Lender, such Lender’s
Domestic Lending Office in the case of a Base Rate Advance, such Lender’s Eurodollar Lending
Office in the case of a Eurodollar Rate Advance, such Lender’s Canadian Domestic Lending
Office in the case of a Canadian Prime Rate Advance, such Lender’s BA Lending Office in the
case of a Drawing and, in the case of a Competitive Bid Advance, the office of such Lender
notified by such Lender to the Agent as its Applicable Lending Office with respect to such
Competitive Bid Advance.

          “Applicable Margin” means (a) for Base Rate Advances, 0% per annum, (b) for
Canadian Prime Rate Advances, 0% per annum and (c) for Eurodollar Rate Advances, as of any
date, a percentage per annum determined by reference to the Public Debt Rating in effect on
such date as set forth below:

	 	 	 	 	 
	Public Debt Rating	 	Applicable Margin for
	S&P/Moody’s	 	Eurodollar Rate Advances
	Level 1

A or A2 or above

	 	 	0.175	%
	Level 2

A- or A3 or above

	 	 	0.270	%

 

 

	 	 	 	 	 
	Public Debt Rating	 	Applicable Margin for
	S&P/Moody’s	 	Eurodollar Rate Advances
	Level 3

BBB+ or Baa1

	 	 	0.350	%
	Level 4

BBB or Baa2

	 	 	0.425	%
	Level 5

BBB- and Baa3

	 	 	0.500	%
	Level 6

Less than Level 5

	 	 	0.550	%

          “Applicable Percentage” means, as of any date, a percentage per annum
determined by reference to the Public Debt Rating in effect on such date as set forth below:

	 	 	 	 	 
	Public Debt Rating	 	Applicable
	S&P/Moody’s	 	Percentage
	Level 1

A or A2 or above

	 	 	0.075	%
	Level 2

A- or A3 or above

	 	 	0.080	%
	Level 3

BBB+ or Baa1

	 	 	0.100	%
	Level 4

BBB or Baa2

	 	 	0.125	%
	Level 5

BBB- and Baa3

	 	 	0.150	%
	Level 6

Less than Level 5

	 	 	0.200	%

          “Applicable Stamping Fee” means, as of any date, a percentage per annum
determined by reference to the Public Debt Rating in effect on such date as set forth below:

	 	 	 	 	 
	Public Debt Rating	 	Applicable
	S&P/Moody’s	 	Stamping Fee
	Level 1

A or A2 or above

	 	 	0.175	%
	Level 2

A- or A3 or above

	 	 	0.270	%
	Level 3

BBB+ or Baa1

	 	 	0.350	%
	Level 4

BBB or Baa2

	 	 	0.425	%
	Level 5

BBB- and Baa3

	 	 	0.500	%
	Level 6

Less than Level 5

	 	 	0.550	%

          “Applicable Utilization Fee” means, as of any date that the aggregate Advances
exceed 50% of the aggregate Commitments, a percentage per annum determined by reference to
the Public Debt Rating in effect on such date as set forth below:

2

 

	 	 	 	 	 
	Public Debt Rating	 	Applicable
	S&P/Moody’s	 	Utilization Fee
	Level 1

A or A2 or above

	 	 	0.075	%
	Level 2

A- or A3 or above

	 	 	0.100	%
	Level 3

BBB+ or Baa1

	 	 	0.100	%
	Level 4

BBB or Baa2

	 	 	0.100	%
	Level 5

BBB- and Baa3

	 	 	0.100	%
	Level 6

Less than Level 5

	 	 	0.250	%

          “Assignment and Acceptance” means an assignment and acceptance entered into by
a Lender and an Eligible Assignee, and accepted by the Agent, in substantially the form of
Exhibit C hereto.

          “Assuming Lender” has the meaning specified in Section 2.20(d).

          “Assumption Agreement” has the meaning specified in Section 2.20(d)(ii).

          “BA Advance” means the acceptance of a Draft or the purchase of a Bankers’
Acceptance or Acceptance Note by a Lender for the account of Lafarge Canada.

          “BA Lending Office” means, in the case of each Lender, the office of such
Lender set forth as its “BA Lending Office” opposite its name on Schedule I hereto or in the
Assumption Agreement or the Assignment and Acceptance pursuant to which it became a Lender
or such other office of such Lender in Canada as such Lender may from time to time specify
to Lafarge Canada and the Agent for such purpose.

          “BA Rate” means, for all Bankers’ Acceptances or Acceptance Notes comprising
part of the same Drawing to be purchased by (a) a Canadian Lender named on Schedule I to the
Bank Act (Canada), the average rate (calculated on an annual basis of a year of 365 days and
rounded up to the nearest multiple of 1/4 of 1%, if such average is not such a multiple) for
Canadian Dollar Bankers’ Acceptances having a comparable term that appears on the Reuters
Screen CDOR Page (or such other page as is a replacement page for such bankers’ acceptances)
at 10:00 A.M. (Toronto time) or, if such rate is not available at such time, the BA Rate in
respect of such Bankers’ Acceptances shall be the arithmetic average of the discount rates
(calculated on an annual basis of a year of 365 days) and rounded up to the nearest multiple
of 1/4 of 1%, if such average is not such a multiple, quoted by each Canadian Reference
Lender at 9:30 a.m. (Toronto time) on the date of such Drawing as the discount rate at which
such Reference Lender would purchase, on such date, its own bankers’ acceptances having an
aggregate Face Amount equal to and with a term to maturity the same as the Bankers’
Acceptances or Acceptance Notes to be acquired by such Lender as part of such Drawing, or
(b) a Canadian Lender other than a Canadian Lender named on Schedule I to the Bank Act
(Canada), the lesser of (i) the rate advised by such Canadian Lender to the Agent as being
the discount rate of such Canadian Lender (calculated on an annual basis of a year of 365
days) at 10:00 A.M. (Toronto time) on the applicable purchase date for bankers’ acceptances
of such Canadian Lender having a comparable face amount and identical maturity date to the
face amount and maturity date of such Bankers’ Acceptance or Acceptance Note, and (ii) the
rate determined by the Agent in accordance with (a) above plus 0.10% per annum.

          “Bankers’ Acceptance” has the meaning specified in Section 2.01(c).

          “Bankruptcy Law” means any proceeding of the type referred to in Section
6.01(e) of this Agreement or Title 11, U.S. Code, or any similar foreign, federal or state
law for the relief of debtors.

3

 

          “Base Rate” means a fluctuating interest rate per annum in effect from time to
time, which rate per annum shall at all times be equal to the highest of:

               (a) the rate of interest announced publicly by Citibank in New York, New York,
from time to time, as Citibank’s base rate;

               (b) the sum (adjusted to the nearest 1/4 of 1% or, if there is no nearest 1/4
of 1%, to the next higher 1/4 of 1%) of (i) 1/2 of 1% per annum, plus (ii) the
rate obtained by dividing (A) the latest three-week moving average of secondary
market morning offering rates in the United States for three-month certificates of
deposit of major United States money market banks, such three-week moving average
(adjusted to the basis of a year of 360 days) being determined weekly on each Monday
(or, if such day is not a Business Day, on the next succeeding Business Day) for the
three-week period ending on the previous Friday by Citibank on the basis of such
rates reported by certificate of deposit dealers to and published by the Federal
Reserve Bank of New York or, if such publication shall be suspended or terminated,
on the basis of quotations for such rates received by Citibank from three New York
certificate of deposit dealers of recognized standing selected by Citibank, by (B) a
percentage equal to 100% minus the average of the daily percentages specified during
such three-week period by the Board of Governors of the Federal Reserve System (or
any successor) for determining the maximum reserve requirement (including, but not
limited to, any emergency, supplemental or other marginal reserve requirement) for
Citibank with respect to liabilities consisting of or including (among other
liabilities) three-month US Dollar non-personal time deposits in the United States,
plus (iii) the average during such three-week period of the annual
assessment rates estimated by Citibank for determining the then current annual
assessment payable by Citibank to the Federal Deposit Insurance Corporation (or any
successor) for insuring US Dollar deposits of Citibank in the United States; and

               (c) 1/2 of one percent per annum above the Federal Funds Rate.

          “Base Rate Advance” means a Revolving Credit Advance denominated in US Dollars
that bears interest as provided in Section 2.08(a)(i).

          “Borrower” means each Initial Borrower and each Designated Subsidiary that
shall become a party to this Agreement pursuant to Section 10.08.

          “Borrowing” means a Revolving Credit Borrowing, a Canadian Borrowing or a
Competitive Bid Borrowing.

          “Business Day” means a day of the year on which banks are not required or
authorized by law to close in New York City and, if the applicable Business Day relates to
any Eurodollar Rate Advances or LIBO Rate Advances, on which dealings are carried on in the
London interbank market; and if the applicable Business Day relates to a Canadian Advance,
on which banks are open for business in Toronto, Ontario, Canada.

          “Canadian Advance” means an advance under the Canadian Facility made in
Canadian Dollars to Lafarge Canada or the acceptance of a Draft or purchase of a Bankers’
Acceptance or Acceptance Note by a Lender for the account of Lafarge Canada as part of a
Canadian Borrowing and refers to a Canadian Prime Rate Advance or a BA Advance (each of
which shall be a “Type” of Canadian Advance).

          “Canadian Borrowing” means a borrowing consisting of simultaneous Canadian
Advances made by the Canadian Lenders pursuant to Section 2.01(b) or (c).

          “Canadian Commitment” means, with respect to any Canadian Lender at any time,
the US Dollar amount set forth opposite such Lender’s name on Schedule I hereto under the
caption “Canadian Commitment” or, if such Lender has entered into one or more Assignment and
Acceptances, the US Dollar amount set forth for such Lender in the Register maintained by
the Agent pursuant to Section 10.07(d) as

4

 

such Lender’s “Canadian Commitment”, as such
amount may be reduced at or prior to such time pursuant to Section 2.06.

          “Canadian Dollars” and the “CN$” sign each means the lawful currency of
Canada.

          “Canadian Domestic Lending Office” means, with respect to any Canadian Lender,
the office of such Lender specified as its “Canadian Domestic Lending Office” opposite its
name on Schedule I hereto or in the Assignment and Acceptance pursuant to which it became a
Lender, as the case may be, or such other office of such Lender in Canada as such Lender may
from time to time specify to Lafarge Canada and the Agent.

          “Canadian Facility” means, at any time, the aggregate amount of the Canadian
Commitments at such time.

          “Canadian Guarantor” means the Company and each Subsidiary of Lafarge Canada
that shall be required to become a party to this Agreement pursuant to Section 5.01(l).

          “Canadian Interbank Rate” means the interest rate, expressed as a percentage
per annum, which is customarily used by the Agent when calculating interest due by it or
owing to it from or in connection with correction of errors between it and other Canadian
chartered banks.

          “Canadian Lender” means any Lender that has (together with its Affiliates) a
Canadian Commitment and a Revolving Credit Commitment.

          “Canadian Note” means a promissory note of Lafarge Canada payable to the order
of any Canadian Lender, delivered pursuant to a request made under Section 2.18, in
substantially the form of Exhibit A-3 hereto, evidencing the aggregate indebtedness of
Lafarge Canada to such Lender resulting from the Canadian Advances made by such Lender to
Lafarge Canada.

          “Canadian Prime Rate” means a fluctuating interest rate per annum in effect
from time to time, which rate per annum shall at all times be equal to the higher of:

               (a) the average of the prime commercial lending rates of the Canadian Reference
Lenders that publicly announce their prime commercial lending rate from time to time
for commercial loans made by such Canadian Reference Lenders in Canadian Dollars in
Canada; and

               (b) 1/2 of 1% per annum above the rate quoted for 30-day Canadian Dollar
bankers’ acceptances that appears on the Reuters Screen CDOR Page (or any
replacement page) as of 10:00 a.m. (Toronto time) on the date of determination.

          “Canadian Prime Rate Advance” means a Canadian Advance that bears interest as
provided in Section 2.08(a)(ii).

          “Canadian Reference Lenders” means Citibank Canada, Bank of Montreal and The
Bank of Nova Scotia; provided that, if any of the foregoing shall cease to be a
Lender, the term “Canadian Reference Lenders” shall no longer include such Lender and shall
thereafter include such Lender as the Agent shall designate as a replacement Canadian
Reference Lender, which designation shall be made with the consent of such replacement
Canadian Reference Lender and Lafarge Canada, which consent shall not be unreasonably
withheld or delayed and provided, further, that if any Lenders are banks set
forth in Schedule I of the Bank Act (Canada), at least one of the Canadian Reference Lenders
will be such a Schedule I bank.

          “Cash Collateral Account” means a cash collateral account to be established and
maintained by the Agent, over which the Agent shall have sole dominion and control, upon
terms as may be satisfactory to the Agent.

5

 

          “Citibank Canada” means Citibank, N.A., Canadian Branch.

          “Commitment” means a Revolving Credit Commitment or a Canadian Commitment.

          “Commitment Date” has the meaning specified in Section 2.20(b).

          “Commitment Increase” has the meaning specified in Section 2.20(a).

          “Committed Advance” means a Revolving Credit Advance or a Canadian Advance.

          “Committed Borrowing” means a Revolving Credit Borrowing or a Canadian
Borrowing.

          “Competitive Bid Advance” means an advance by a Lender to any US Borrower as
part of a Competitive Bid Borrowing resulting from the competitive bidding procedure
described in Section 2.03 and refers to a Fixed Rate Advance or a LIBO Rate Advance.

          “Competitive Bid Borrowing” means a borrowing consisting of simultaneous
Competitive Bid Advances from each of the Lenders whose offer to make one or more
Competitive Bid Advances as part of such borrowing has been accepted under the competitive
bidding procedure described in Section 2.03.

          “Competitive Bid Note” means a promissory note of a US Borrower payable to the
order of any Lender, in substantially the form of Exhibit A-2 hereto, evidencing the
indebtedness of such US Borrower to such Lender resulting from a Competitive Bid Advance
made by such Lender.

          “Confidential Information” means confidential or proprietary information that
any Borrower furnishes to the Agent or any Lender, but does not include any such information
that is or becomes generally available to the public or that is or becomes available to the
Agent or such Lender from a source other than any Borrower that, to the knowledge of the
Agent or such Lender, is subject to a confidentiality arrangement with such Borrower.

          “Consolidated” refers to the consolidation of accounts in accordance with GAAP.

          “Convert”, “Conversion” and “Converted” each refers to a
conversion of Revolving Credit Advances of one Type into Revolving Credit Advances of the
other Type pursuant to Section 2.09 or 2.10.

          “Debt” of any Person means, without duplication, (a) all indebtedness of such
Person for borrowed money, (b) all obligations of such Person for the deferred purchase
price of property or services (other than trade payables incurred in the ordinary course of
such Person’s business), (c) all obligations of such Person evidenced by notes, bonds,
debentures or other similar instruments, (d) all obligations of such Person as lessee under
leases that have been or should be, in accordance with GAAP, recorded as capital leases, (e)
all obligations, contingent or otherwise, of such Person in respect of acceptances, letters
of credit or similar extensions of credit, (f) all Synthetic Lease Liabilities of such
Person, (g) all Invested Amounts, (h) all Debt of others referred to in clauses (a) through
(f) above or clause (h) below guaranteed by such Person, or in effect guaranteed by such
Person and (i) all Debt referred to in clauses (a) through (h) above secured by (or for
which the holder of such Debt has an existing right, contingent or otherwise, to be secured
by) any Lien on property (including, without limitation, accounts and contract rights) owned
by such Person, even though such Person has not assumed or become liable for the payment of
such Debt, which Debt, in the case of this clause (i) shall be deemed not to exceed the fair
market value of such encumbered property.

          “Default” means any Event of Default or any event that would constitute an
Event of Default but for the requirement that notice be given or time elapse or both.

          “Designated Subsidiary” means any Subsidiary designated after the date of this
Agreement for borrowing privileges hereunder pursuant to Section 10.08.

6

 

          “Designation Letter” means a letter entered into by a Designated Subsidiary,
the Company and the Agent, in substantially the form of Exhibit E hereto, pursuant to which
such Designated Subsidiary shall become a Borrower hereunder in accordance with Section
10.08.

          “Disclosed Litigation” has the meaning specified in Section 3.01(b).

          “Domestic Lending Office” means, with respect to any Lender, the office of such
Lender specified as its “Domestic Lending Office” opposite its name on Schedule I hereto or
in the Assumption Agreement or the Assignment and Acceptance pursuant to which it became a
Lender, or such other office of such Lender as such Lender may from time to time specify to
the Company and the Agent.

          “Draft” means a blank bill of exchange, within the meaning of the Bills of
Exchange Act (Canada), drawn by Lafarge Canada on any Canadian Lender, in substantially the
form of Exhibit A-4, and which, except as otherwise provided herein, has not been completed
or accepted by such Lender.

          “Drawing” means the simultaneous acceptance of Drafts and purchase of Bankers’
Acceptances or Acceptance Notes by the Canadian Lenders, in accordance with Section 2.04(a).

          “Drawing Fee” means, with respect to each Bankers’ Acceptance or Acceptance
Note, an amount equal to (a) the Applicable Stamping Fee in effect on the date of the
Drawing or renewal, as the case may be, of such Bankers’ Acceptance or Acceptance Note,
provided that at any time that Default Interest is required to be paid under Section
2.08(b), the Applicable Stamping Fee shall be increased by 2% per annum multiplied
by (b) the Face Amount of such Bankers’ Acceptance or Acceptance Note, calculated on the
basis of the term to maturity of such Bankers’ Acceptance or Acceptance Note and a year of
365 days.

          “Drawing Purchase Price” means, with respect to each Bankers’ Acceptance or
Acceptance Note to be purchased and/or accepted by any Canadian Lender at any time, the
amount (adjusted to the nearest whole cent or, if there is no nearest whole cent, the next
higher whole cent) obtained by dividing (i) the aggregate Face Amount of such Bankers’
Acceptance or Acceptance Note, by (ii) the sum of (A) one and (B) the product of (1) the BA
Rate in effect at such time (expressed as a decimal fraction) multiplied by (2) a
fraction the numerator of which is the number of days in the term to maturity of such
Bankers’ Acceptance or Acceptance Note and the denominator of which is 365 days.

          “EBITDA” means, for any period, net income (or net loss) plus the sum
of (a) interest expense net of interest income, (b) income tax expense, (c) depreciation
expense, (d) depletion expense and (e) amortization expense, in each case determined in
accordance with GAAP for such period.

          “Effective Date” has the meaning specified in Section 3.01.

          “Eligible Assignee” means (a) in respect of the Revolving Credit Facility (i) a
Lender; (ii) an Affiliate of a Lender; and (iii) any other Person approved by the Agent and,
unless an Event of Default has occurred and is continuing at the time any assignment is
effected in accordance with Section 10.07, the Company, such approval not to be unreasonably
withheld or delayed and (b) in respect of the Canadian Facility, any Eligible Assignee
described in clause (a) above that is not a non-resident of Canada for the purposes of Part
XIII of the Income Tax Act (Canada), provided, however, that neither any
Borrower nor an Affiliate of any Borrower shall qualify as an Eligible Assignee.

          “Environmental Action” means any action, suit, demand, demand letter, claim,
notice of non-compliance or violation, notice of liability or potential liability,
investigation, proceeding, consent order or consent agreement relating in any way to any Environmental Law, Environmental Permit or
Hazardous Materials or arising from alleged injury or threat of injury to health, safety or
the environment, including, without limitation, (a) by any governmental or regulatory
authority for enforcement, cleanup, removal, response, remedial or other actions or damages
and (b) by any governmental or regulatory authority or any third party for damages,
contribution, indemnification, cost recovery, compensation or injunctive relief.

7

 

          “Environmental Law” means any federal, state, local or foreign statute, law,
ordinance, rule, regulation, code, order, judgment, decree or judicial or agency
interpretation, policy or guidance relating to pollution or protection of the environment,
health, safety or natural resources, including, without limitation, those relating to the
use, handling, transportation, treatment, storage, disposal, release or discharge of
Hazardous Materials.

          “Environmental Permit” means any permit, approval, identification number,
license or other authorization required under any Environmental Law.

          “Equivalent” in (a) US Dollars of Canadian Dollars on any date of determination
means the equivalent thereof determined by using the quoted spot rate at which Citibank
Canada’s principal office in Toronto, Ontario offers to exchange US Dollars for Canadian
Dollars in Toronto, Ontario at 11:00 a.m. (Toronto time) on such date and (b) in Canadian
Dollars of US Dollars on any date of determination means the equivalent thereof determined
by using the quoted spot rate at which Citibank’s principal office in New York City, New
York offers to exchange Canadian Dollars for US Dollars in New York City, New York at 11:00
a.m. (New York City time) on such date.

          “ERISA” means the Employee Retirement Income Security Act of 1974, as amended
from time to time, and the regulations promulgated and rulings issued thereunder.

          “ERISA Affiliate” means any Person that for purposes of Title IV of ERISA is a
member of the Company’s controlled group, or under common control with the Company, within
the meaning of Section 414 of the Internal Revenue Code.

          “ERISA Event” means (a) (i) the occurrence of a reportable event, within the
meaning of Section 4043 of ERISA, with respect to any Plan unless the 30-day notice
requirement with respect to such event has been waived by the PBGC, or (ii) the requirements
of subsection (1) of Section 4043(b) of ERISA (without regard to subsection (2) of such
Section) are met with respect to a contributing sponsor, as defined in Section 4001(a)(13)
of ERISA, of a Plan, and an event described in paragraph (9), (10), (11), (12) or (13) of
Section 4043(c) of ERISA is reasonably expected to occur with respect to such Plan within
the following 30 days; (b) the application for a minimum funding waiver with respect to a
Plan; (c) the provision by the administrator of any Plan of a notice of intent to terminate
such Plan pursuant to Section 4041(a)(2) of ERISA (including any such notice with respect to
a plan amendment referred to in Section 4041(e) of ERISA); (d) the cessation of operations
at a facility of the Company or any ERISA Affiliate in the circumstances described in
Section 4062(e) of ERISA; (e) the withdrawal by the Company or any ERISA Affiliate from a
Multiple Employer Plan during a plan year for which it was a substantial employer, as
defined in Section 4001(a)(2) of ERISA; (f) the conditions for the imposition of a lien
under Section 302(f) of ERISA shall have been met with respect to any Plan; (g) the adoption
of an amendment to a Plan requiring the provision of security to such Plan pursuant to
Section 307 of ERISA; or (h) the institution by the PBGC of proceedings to terminate a Plan
pursuant to Section 4042 of ERISA, or the occurrence of any event or condition described in
Section 4042 of ERISA that constitutes grounds for the termination of, or the appointment of
a trustee to administer, a Plan.

          “Eurocurrency Liabilities” has the meaning assigned to that term in Regulation
D of the Board of Governors of the Federal Reserve System, as in effect from time to time.

          “Eurodollar Lending Office” means, with respect to any Lender, the office of
such Lender specified as its “Eurodollar Lending Office” opposite its name on Schedule I
hereto or in the Assumption Agreement or the Assignment and Acceptance pursuant to which it
became a Lender (or, if no such office
is specified, its Domestic Lending Office), or such other office of such Lender as such
Lender may from time to time specify to the Company and the Agent.

          “Eurodollar Rate” means, for any Interest Period for each Eurodollar Rate
Advance comprising part of the same Revolving Credit Borrowing, an interest rate per annum
equal to the rate per annum obtained by dividing (a) the rate per annum (rounded upward to
the nearest whole multiple of 1/16 of 1% per annum) appearing on Moneyline Telerate Markets
Page 3750 (or any successor page) as the London

8

 

interbank offered rate for deposits in US
Dollars at approximately 11:00 A.M. (London time) two Business Days prior to the first day
of such Interest Period for a term comparable to such Interest Period or, if for any reason
such rate is not available, the average (rounded upward to the nearest whole multiple of
1/16 of 1% per annum, if such average is not such a multiple) of the rate per annum at which
deposits in US Dollars are offered by the principal office of each of the Reference Banks in
London, England to prime banks in the London interbank market at 11:00 A.M. (London time)
two Business Days before the first day of such Interest Period in an amount substantially
equal to such Reference Bank’s Eurodollar Rate Advance comprising part of such Revolving
Credit Borrowing to be outstanding during such Interest Period and for a period equal to
such Interest Period by (b) a percentage equal to 100% minus the Eurodollar Rate Reserve
Percentage for such Interest Period. If the Moneyline Telerate Markets Page 3750 (or any
successor page) is unavailable, the Eurodollar Rate for any Interest Period for each
Eurodollar Rate Advance comprising part of the same Revolving Credit Borrowing shall be
determined by the Agent on the basis of applicable rates furnished to and received by the
Agent from the Reference Banks two Business Days before the first day of such Interest
Period, subject, however, to the provisions of Section 2.09.

          “Eurodollar Rate Advance” means a Revolving Credit Advance denominated in US
Dollars that bears interest as provided in Section 2.08(a)(iii).

          “Eurodollar Rate Reserve Percentage” for any Interest Period for all Eurodollar
Rate Advances or LIBO Rate Advances comprising part of the same Borrowing means the reserve
percentage applicable two Business Days before the first day of such Interest Period under
regulations issued from time to time by the Board of Governors of the Federal Reserve System
(or any successor) for determining the maximum reserve requirement (including, without
limitation, any emergency, supplemental or other marginal reserve requirement) for a member
bank of the Federal Reserve System in New York City with respect to liabilities or assets
consisting of or including Eurocurrency Liabilities (or with respect to any other category
of liabilities that includes deposits by reference to which the interest rate on Eurodollar
Rate Advances or LIBO Rate Advances is determined) having a term equal to such Interest
Period.

          “Events of Default” has the meaning specified in Section 6.01.

          “Face Amount” means, with respect of any Bankers’ Acceptance or Acceptance
Note, the amount payable to the holder of such Bankers’ Acceptance or Acceptance Note on its
then existing Maturity Date.

          “Facility” means the Revolving Credit Facility or the Canadian Facility.

          “Federal Funds Rate” means, for any period, a fluctuating interest rate per
annum equal for each day during such period to the weighted average of the rates on
overnight Federal funds transactions with members of the Federal Reserve System arranged by
Federal funds brokers, as published for such day (or, if such day is not a Business Day, for
the next preceding Business Day) by the Federal Reserve Bank of New York, or, if such rate
is not so published for any day that is a Business Day, the average of the quotations for
such day on such transactions received by the Agent from three Federal funds brokers of
recognized standing selected by it.

          “Fixed Rate Advances” has the meaning specified in Section 2.03(a)(i).

          “GAAP” has the meaning specified in Section 1.03.

          “Guaranteed Obligations” has the meaning specified in Section 8.01.

          “Guaranty Supplement” has the meaning specified in Section 8.06.

          “Hazardous Materials” means (a) petroleum and petroleum products, byproducts or
breakdown products, radioactive materials, asbestos-containing materials, polychlorinated
biphenyls and radon gas and (b) any other chemicals, materials or substances designated,
classified or regulated as hazardous or toxic or as a pollutant or contaminant under any
Environmental Law.

9

 

          “Hedge Agreements” means interest rate swap, cap or collar agreements, interest
rate future or option contracts, currency swap agreements, currency future or option
contracts, commodity future or option contracts and other similar agreements.

          “Increase Date” has the meaning specified in Section 2.20(a).

          “Increasing Lender” has the meaning specified in Section 2.20(b).

          “Information Memorandum” means the information memorandum dated July 2005 used
by the Agent in connection with the syndication of the Commitments.

          “Initial Lenders” has the meaning specified in the preamble.

          “Interest Period” means, for each Eurodollar Rate Advance comprising part of
the same Revolving Credit Borrowing and each LIBO Rate Advance comprising part of the same
Competitive Bid Borrowing, the period commencing on the date of such Eurodollar Rate Advance
or LIBO Rate Advance or the date of the Conversion of any Base Rate Advance into such
Eurodollar Rate Advance and ending on the last day of the period selected by the applicable
Borrower pursuant to the provisions below and, thereafter, with respect to Eurodollar Rate
Advances, each subsequent period commencing on the last day of the immediately preceding
Interest Period and ending on the last day of the period selected by the applicable Borrower
pursuant to the provisions below. The duration of each such Interest Period shall be one,
two, three or six months, as the applicable Borrower may, upon notice received by the Agent
not later than 11:00 A.M. (New York City time) on the third Business Day prior to the first
day of such Interest Period, select; provided, however, that:

               (i) a Borrower may not select any Interest Period that ends after the
Termination Date;

               (ii) Interest Periods commencing on the same date for Eurodollar Rate Advances
comprising part of the same Revolving Credit Borrowing or for LIBO Rate Advances
comprising part of the same Competitive Bid Borrowing shall be of the same duration;

               (iii) whenever the last day of any Interest Period would otherwise occur on a
day other than a Business Day, the last day of such Interest Period shall be
extended to occur on the next succeeding Business Day, provided,
however, that, if such extension would cause the last day of such Interest
Period to occur in the next following calendar month, the last day of such Interest
Period shall occur on the next preceding Business Day; and

               (iv) whenever the first day of any Interest Period occurs on a day of an
initial calendar month for which there is no numerically corresponding day in the
calendar month that succeeds such initial calendar month by the number of months
equal to the number of months in such Interest Period, such Interest Period shall
end on the last Business Day of such succeeding calendar month.

          “Internal Revenue Code” means the Internal Revenue Code of 1986, as amended
from time to time, and the regulations promulgated and rulings issued thereunder.

          “Invested Amounts” means the amounts invested by investors that are not
Affiliates of the Borrowers in connection with a receivables securitization program and paid
to the Company or any of its Subsidiaries, as reduced by the aggregate amounts received by
such investors from the payment of receivables and applied to reduce such invested amounts.

          “Lenders” means the Initial Lenders, each Assuming Lender that shall become a
party hereto pursuant to Section 2.20 and each Person that shall become a party hereto
pursuant to Section 10.07.

10

 

          “LIBO Rate” means, for any Interest Period for all LIBO Rate Advances
comprising part of the same Competitive Bid Borrowing, an interest rate per annum equal to
the rate per annum obtained by dividing (a) the rate per annum (rounded upward to the
nearest whole multiple of 1/16 of 1% per annum) appearing on Moneyline Telerate Markets Page
3750 (or any successor page) as the London interbank offered rate for deposits in US Dollars
at approximately 11:00 A.M. (London time) two Business Days prior to the first day of such
Interest Period for a term comparable to such Interest Period or, if for any reason such
rate is not available, the average (rounded upward to the nearest whole multiple of 1/16 of
1% per annum, if such average is not such a multiple) of the rate per annum at which
deposits in US Dollars offered by the principal office of each of the Reference Banks in
London, England to prime banks in the London interbank market at 11:00 A.M. (London time)
two Business Days before the first day of such Interest Period in an amount substantially
equal to the amount that would be the Reference Banks’ respective ratable shares of such
Borrowing if such Borrowing were to be a Revolving Credit Borrowing to be outstanding during
such Interest Period and for a period equal to such Interest Period by (b) a percentage
equal to 100% minus the Eurodollar Rate Reserve Percentage for such Interest Period. If the
Moneyline Telerate Markets Page 3750 (or any successor page) is unavailable, the LIBO Rate
for any Interest Period for each LIBO Rate Advance comprising part of the same Competitive
Bid Borrowing shall be determined by the Agent on the basis of applicable rates furnished to
and received by the Agent from the Reference Banks two Business Days before the first day of
such Interest Period, subject, however, to the provisions of Section 2.09.

          “LIBO Rate Advances” means a Competitive Bid Advance bearing interest based on
the LIBO Rate.

          “Lien” means any lien, security interest or other charge or encumbrance of any
kind, or any other type of preferential arrangement, including, without limitation, the lien
or retained security title of a conditional vendor and any easement, right of way or other
encumbrance on title to real property.

          “Loan Party” means the Company, each other Borrower and each other Canadian
Guarantor.

          “Material Adverse Change” means any material adverse change in the business,
condition (financial or otherwise), results of operations, performance, properties or
prospects of the Company and its Subsidiaries taken as a whole.

          “Material Adverse Effect” means a material adverse effect on (a) the business,
condition (financial or otherwise), results of operations, performance, properties or
prospects of the Company and its Subsidiaries taken as a whole, (b) the rights and remedies
of the Agent or any Lender under this Agreement or any Note or (c) the ability of any
Borrower to perform its obligations under this Agreement or any Note.

          “Maturity Date” means, for each Bankers’ Acceptance or Acceptance Note
comprising part of the same Drawing, the date on which the Face Amount for such Bankers’
Acceptance or Acceptance Note becomes due and payable in accordance with the provisions set
forth below, which shall be a Business Day occurring 14 days, one, two, three months or six
months after the date on which such Bankers’ Acceptance or Acceptance Note is purchased
and/or accepted as part of any Drawing, as Lafarge Canada may select upon notice received by
the Agent not later than 12:00 a.m. (Toronto time) on a Business Day at least two Business
Days prior to the date on which such Bankers’ Acceptance or Acceptance Note is to be
accepted and purchased (whether as a new Drawing, by renewal or by Conversion);
provided, however, that:

               (a) Lafarge Canada may not select any Maturity Date for any Bankers’ Acceptance
or Acceptance Note that occurs after the then scheduled Termination Date;

               (b) the Maturity Date for all Bankers’ Acceptances or Acceptance Notes
comprising part of the same Drawing shall occur on the same date; and

11

 

               (c) whenever the Maturity Date for any Bankers’ Acceptance or Acceptance Note
would otherwise occur on a day other than a Business Day, such Maturity Date shall
be extended to occur on the next succeeding Business Day.

          “Moody’s” means Moody’s Investors Service, Inc.

          “Multiemployer Plan” means a multiemployer plan, as defined in Section
4001(a)(3) of ERISA, to which the Company or any ERISA Affiliate is making or accruing an
obligation to make contributions, or has within any of the preceding five plan years made or
accrued an obligation to make contributions.

          “Multiple Employer Plan” means a single employer plan, as defined in Section
4001(a)(15) of ERISA, that (a) is maintained for employees of the Company or any ERISA
Affiliate and at least one Person other than the Company and the ERISA Affiliates or (b) was
so maintained and in respect of which the Company or any ERISA Affiliate could have
liability under Section 4064 or 4069 of ERISA in the event such plan has been or were to be
terminated.

          “Non-BA Lender” shall have the meaning attributed thereto in Section 2.04(i).

          “Note” means a Revolving Credit Note, a Canadian Note or a Competitive Bid
Note, as the context may require.

          “Notice of Canadian Borrowing” has the meaning specified in Section
2.02(a)(ii).

          “Notice of Competitive Bid Borrowing” has the meaning specified in Section
2.03(a).

          “Notice of Drawing” has the meaning specified in Section 2.04(a).

          “Notice of Revolving Credit Borrowing” has the meaning specified in Section
2.02(a)(i).

          “Obligations” has the meaning specified in Section 7.01.

          “Patriot Act” means the Uniting and Strengthening America by Providing
Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001, Pub. L. 107-56,
signed into law October 26, 2001.

          “PBGC” means the Pension Benefit Guaranty Corporation (or any successor).

          “Permitted Liens” means such of the following as to which no enforcement,
collection, execution, levy or foreclosure proceeding shall have been commenced unless being
contested in good faith and for which appropriate reserves are being maintained: (a) Liens
for taxes, assessments and governmental charges or levies to the extent not required to be
paid under Section 5.01(b) hereof; (b) Liens imposed by law, such as materialmen’s,
mechanics’, carriers’, workmen’s and repairmen’s Liens and other similar Liens arising in
the ordinary course of business securing obligations that are not overdue for a period of
more than 60 days; (c) pledges or deposits to secure obligations under workers’ compensation
laws or similar legislation or to secure public or statutory obligations; and (d) easements,
rights of way and other encumbrances on title to real property that do not render title to
the property encumbered thereby unmarketable or materially adversely affect the use of such
property for its present purposes.

          “Person” means an individual, partnership, corporation (including a business
trust), joint stock company, trust, unincorporated association, joint venture, limited
liability company or other entity, or a government or any political subdivision or agency
thereof.

          “Plan” means a Single Employer Plan or a Multiple Employer Plan.

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          “Public Debt Rating” means, as of any date, the lowest rating that has been
most recently announced by either S&P or Moody’s, as the case may be, for any class of
non-credit enhanced long-term senior unsecured debt issued by the Company. For purposes of
the foregoing, (a) if only one of S&P and Moody’s shall have in effect a Public Debt Rating,
the Applicable Margin, the Applicable Percentage and the Applicable Utilization Fee shall be
determined by reference to the available rating; (b) if neither S&P nor Moody’s shall have
in effect a Public Debt Rating, the Applicable Margin, the Applicable Percentage and the
Applicable Utilization Fee will be set in accordance with Level 6 under the definition of
“Applicable Margin”, “Applicable Percentage” or “Applicable Utilization
Fee”, as the case may be; (c) if the ratings established by S&P and Moody’s shall fall
within different levels, the Applicable Margin, the Applicable Percentage and the Applicable
Utilization Fee shall be based upon the higher rating, except that if the lower of such
ratings is more than one level below the higher of such ratings, the Applicable Margin, the
Applicable Percentage and the Applicable Utilization Fee shall be based upon the level that
is one level above the lower rating; (d) if any rating established by S&P or Moody’s shall
be changed, such change shall be effective as of the date on which such change is first
announced publicly by the rating agency making such change; and (e) if S&P or Moody’s shall
change the basis on which ratings are established, each reference to the Public Debt Rating
announced by S&P or Moody’s, as the case may be, shall refer to the then equivalent rating
by S&P or Moody’s, as the case may be.

          “Reference Banks” means Citibank, Wachovia Bank, National Association and BNP
Paribas.

          “Register” has the meaning specified in Section 10.07(d).

          “Required Lenders” means (a) at any time prior to an acceleration of the
Advances pursuant to Section 6.01, Lenders owed at least a majority in interest of the then
aggregate unpaid principal amount (based on the Equivalent in US Dollars at such time) of
the Committed Advances owing to Lenders, or, if no such principal amount is then
outstanding, Lenders having at least a majority in interest of the Revolving Credit
Commitments or (b) at any time after an acceleration of the Advances pursuant to Section
6.01, Lenders owed at least a majority in interest of the then aggregate unpaid principal
amount of the Advances (based on the Equivalent in US Dollars at such time) owing to
Lenders, or, if no such principal amount is then outstanding, Lenders having at least a
majority in interest of the Revolving Credit Commitments.

          “Revolving Credit Advance” means an advance by a Revolving Credit Lender to a
US Borrower as part of a Revolving Credit Borrowing and refers to a Base Rate Advance or a
Eurodollar Rate Advance (each of which shall be a “Type” of Revolving Credit
Advance).

          “Revolving Credit Borrowing” means a borrowing consisting of simultaneous
Revolving Credit Advances of the same Type made by each of the Revolving Credit Lenders
pursuant to Section 2.01(a).

          “Revolving Credit Commitment” means as to any Lender (a) the US Dollar amount
set forth opposite such Lender’s name on the Schedule I hereto, (b) if such Lender has
become a Lender hereunder pursuant to an Assumption Agreement, the US Dollar amount set
forth in such Assumption Agreement or (c) if such Lender has entered into any Assignment and
Acceptance, the US Dollar amount set forth for such Lender in the Register maintained by the
Agent pursuant to Section 10.07(d), as such amount may be reduced pursuant to Section 2.06
or increased pursuant to Section 2.20.

          “Revolving Credit Facility” means, at any time, the aggregate amount of the
Revolving Credit Lenders’ Revolving Credit Commitments at such time.

          “Revolving Credit Lender” means any Lender that has a Revolving Credit
Commitment.

          “Revolving Credit Note” means a promissory note of the US Borrowers payable to
the order of any Revolving Credit Lender, delivered pursuant to a request made under Section
2.18 in substantially the form of Exhibit A-1 hereto, evidencing the aggregate indebtedness
of the US Borrowers to such Lender resulting from the Revolving Credit Advances made by such
Lender.

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          “Significant Subsidiary” means, with respect to any Person, any Subsidiary or
group of Subsidiaries which, in either case, holds or owns total assets with a book value in
excess of $50,000,000 or has annual revenues in excess of $50,000,000.

          “Single Employer Plan” means a single employer plan, as defined in Section
4001(a)(15) of ERISA, that (a) is maintained for employees of the Company or any ERISA
Affiliate and no Person other than the Company and the ERISA Affiliates or (b) was so
maintained and in respect of which the Company or any ERISA Affiliate could have liability
under Section 4069 of ERISA in the event such plan has been or were to be terminated.

          “S&P” means Standard & Poor’s, a division of The McGraw-Hill Companies, Inc.

          “Subordinated Obligations” has the meaning specified in Section 8.05.

          “Subsidiary” of any Person means any corporation, partnership, joint venture,
limited liability company, trust or estate of which (or in which) more than 50% of (a) the
issued and outstanding capital stock having ordinary voting power to elect a majority of the
Board of Directors of such corporation (irrespective of whether at the time capital stock of
any other class or classes of such corporation shall or might have voting power upon the
occurrence of any contingency), (b) the interest in the capital or profits of such limited
liability company, partnership or joint venture or (c) the beneficial interest in such trust
or estate, is at the time directly or indirectly owned or controlled by such Person, by such
Person and one or more of its other Subsidiaries or by one or more of such Person’s other
Subsidiaries.

          “Synthetic Lease Liabilities” of a Person means any liability under any tax
retention operating lease or so-called “synthetic” lease transaction, or any obligations
arising with respect to any other similar transaction which is the functional equivalent of
or takes the place of borrowing but which does not constitute a liability on the
Consolidated balance sheets of such Person and its Subsidiaries (other than leases which do
not have an attributable interest component that are not leases that have been, or should
be, in accordance with GAAP, recorded as capital leases).

          “Termination Date” means the earlier of September 12, 2010 and the date of
termination in whole of the Commitments pursuant to Section 2.06 or 6.01.

          “Unused Canadian Commitment” means, with respect to any Canadian Lender at any
time, the lesser of (a) such Lender’s Canadian Commitment at such time minus the aggregate
principal amount of all Canadian Advances (including the aggregate Face Amount of all BA
Advances owing to such Lender and outstanding at such time) made by such Lender and
outstanding at such time and (b) such Lender’s Unused Revolving Credit Commitment at such
time.

          “Unused Revolving Credit Commitment” means, with respect to any Revolving
Credit Lender at any time, (a) such Lender’s Revolving Credit Commitment at such time minus
(b) the sum of (i) the aggregate principal amount of all Revolving Credit Advances made by
such Lender and outstanding at such time plus (ii) such Lender’s ratable share (determined
as the proportion of such Lender’s Revolving Credit Commitment to the Revolving Credit
Facility at such time) of the aggregate principal amount of all Competitive Bid Advances
made by the Lenders pursuant to Section 2.03 and outstanding at such time plus (iii) in the
case of a Revolving Credit Lender that is (or has an Affiliate that is) a Canadian Lender,
the aggregate principal amount of all Canadian Advances (including the aggregate Face Amount
of all BA Advances owing to such Lender and outstanding at such time) made by such Lender
and outstanding at such time, in each case, determined for Advances or Bankers’ Acceptances or Acceptance
Notes denominated in Canadian Dollars by reference to the Equivalent thereof in US Dollars.

          “US Borrower” means each Borrower other than Lafarge Canada or any Subsidiary
of Lafarge Canada.

          “US Dollars” and the “$” sign each means lawful currency of the United
States of America.

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          “Voting Stock” means capital stock issued by a corporation, or equivalent
interests in any other Person, the holders of which are ordinarily, in the absence of
contingencies, entitled to vote for the election of directors (or persons performing similar
functions) of such Person, even if the right so to vote has been suspended by the happening
of such a contingency.

               Section 1.02. Computation of Time Periods. In this Agreement in the computation of
periods of time from a specified date to a later specified date, the word “from” means “from and
including” and the words “to” and “until” each mean “to but excluding”.

               Section 1.03. Accounting Terms. All accounting terms not specifically defined herein
shall be construed in accordance with generally accepted accounting principles consistent with
those applied in the preparation of the financial statements referred to in Section 4.01(e)
(“GAAP”).

ARTICLE II

AMOUNTS AND TERMS OF THE ADVANCES

               Section 2.01. The Committed Advances and Drawings. (a) Revolving Credit
Advances. Each Revolving Credit Lender severally agrees, on the terms and conditions
hereinafter set forth, to make Revolving Credit Advances in US Dollars to any US Borrower from time
to time on any Business Day during the period from the Effective Date until the Termination Date in
an amount for each such Advance not to exceed such Lender’s Unused Revolving Credit Commitment at
such time. Each Revolving Credit Borrowing shall be in an aggregate amount of not less than
$10,000,000 or an integral multiple of $1,000,000 in excess thereof and shall consist of Revolving
Credit Advances of the same Type made on the same day by the Revolving Credit Lenders ratably
according to their respective Unused Revolving Credit Commitments. Within the limits of each
Revolving Credit Lender’s Unused Revolving Credit Commitment in effect from time to time, the US
Borrowers may borrow under this Section 2.01(a), prepay pursuant to Section 2.12 and reborrow under
this Section 2.01(a).

               (b) Canadian Prime Rate Advances. Each Canadian Lender severally agrees, on the terms
and conditions hereinafter set forth, to make Canadian Prime Rate Advances in Canadian Dollars to
Lafarge Canada from time to time on any Business Day during the period from the Effective Date
until the Termination Date in an amount for each such Advance (determined by reference to the
Equivalent thereof in US Dollars on the Business Day such Advance is made) not to exceed such
Lender’s Unused Canadian Commitment at such time. Each Canadian Borrowing under this Section
2.01(b) shall be in an aggregate amount of not less than CN$10,000,000 or an integral multiple of
CN$1,000,000 in excess thereof and shall consist of Canadian Prime Rate Advances made on the same
day by the Canadian Lenders ratably according to their respective Canadian Commitments. Within the
limits of each Canadian Lender’s Unused Canadian Commitment in effect from time to time, Lafarge
Canada may borrow under this Section 2.01(a), prepay pursuant to Section 2.12 and reborrow under
this Section 2.01(a).

               (c) Drawings. Subject to Section 2.04(i), each Canadian Lender severally agrees, on
the terms and conditions hereinafter set forth, to accept Drafts (each Draft so accepted, a
“Bankers’ Acceptance”) for the account of Lafarge Canada, and to purchase such Bankers’
Acceptances or Acceptance Notes from time to time on
any Business Day during the period from the Effective Date until the Termination Date having a
Face Amount (determined by reference to the Equivalent thereof in US Dollars on the Business Day of
such Drawing) for all such Bankers’ Acceptances or Acceptance Notes purchased by such Lender at the
time of such Drawing not to exceed such Lender’s Unused Canadian Commitment at such time. Each
Drawing shall be comprised solely of Canadian Dollars, shall be in an aggregate Face Amount not
less than CN$10,000,000 or an integral multiple or CN$1,000,000 in excess thereof and shall consist
of the creation and purchase of Bankers’ Acceptances or Acceptance Notes at or about the same time
by the Canadian Lenders ratably in accordance with their respective Canadian Commitments. Within
the limits of each Lender’s Unused Canadian Commitment in effect from time to time, amounts drawn
by Lafarge Canada under this Section 2.01(c) and repaid or prepaid from time to time may be redrawn
by Lafarge Canada under this Section 2.01(c).

               Section 2.02. Making the Committed Advances. (a) (i) Revolving Credit Borrowings.
Each Revolving Credit Borrowing shall be made on notice, given not later than (x) 11:00 A.M. (New
York City time) on the third Business Day prior to the date of the proposed Revolving Credit
Borrowing in the case of a Revolving

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Credit Borrowing consisting of Eurodollar Rate Advances or (y)
11:00 A.M. (New York City time) on the date of the proposed Revolving Credit Borrowing in the case
of a Revolving Credit Borrowing consisting of Base Rate Advances, by the applicable US Borrower to
the Agent, which shall give to each Revolving Credit Lender prompt notice thereof by telecopier.
Each such notice of a Revolving Credit Borrowing (a “Notice of Revolving Credit Borrowing”)
shall be by telephone, confirmed immediately in writing, or telecopier in substantially the form of
Exhibit B-1 hereto, specifying therein the requested (A) date of such Revolving Credit Borrowing,
(B) Type of Advances comprising such Revolving Credit Borrowing, (C) aggregate amount of such
Revolving Credit Borrowing, and (D) in the case of a Revolving Credit Borrowing consisting of
Eurodollar Rate Advances, initial Interest Period for each such Revolving Credit Advance. Each
Revolving Credit Lender shall, before 1:00 P.M. (New York City time) on the date of such Revolving
Credit Borrowing make available for the account of its Applicable Lending Office to the Agent at
the applicable Agent’s Account, in same day funds, such Lender’s ratable portion of such Revolving
Credit Borrowing. After the Agent’s receipt of such funds and upon fulfillment of the applicable
conditions set forth in Article III, the Agent will make such funds available to the applicable US
Borrower at the Agent’s address referred to in Section 10.02. Each US Borrower hereby authorizes
the Company to deliver each Notice of Revolving Credit Borrowing on behalf of such Borrower.

               (ii) Canadian Prime Rate Borrowings. Each Canadian Prime Rate Borrowing shall be made
on notice, given not later than 10:30 A.M. (Toronto time) on the date of the proposed Canadian
Prime Rate Borrowing by Lafarge Canada to the Agent, which shall give to each Canadian Lender
prompt notice thereof by telecopier not later than 11:30 A.M. (Toronto Time) on such date. Each
such notice of a Canadian Borrowing (a “Notice of Canadian Borrowing”) shall be by
telephone, confirmed immediately in writing, or telecopier in substantially the form of Exhibit B-3
hereto, specifying therein the requested (A) date of such Canadian Borrowing and (B) aggregate
amount of such Revolving Credit Borrowing. Each Canadian Lender shall, before 1:00 P.M. (Toronto
time) on the date of such Canadian Borrowing make available for the account of its Applicable
Lending Office to the Agent at the applicable Agent’s Account, in same day funds, such Lender’s
ratable portion of such Canadian Borrowing. After the Agent’s receipt of such funds and upon
fulfillment of the applicable conditions set forth in Article III, the Agent will make such funds
available to Lafarge Canada at the Agent’s address referred to in Section 10.02 or at the
applicable Payment Office, as the case be.

               (iii) BA Advances. BA Advances shall be made in accordance with Section 2.04.

               (b) Anything in subsection (a) above to the contrary notwithstanding, (i) a Borrower may not
select Eurodollar Rate Advances for any Revolving Credit Borrowing if the aggregate amount of such
Revolving Credit Borrowing is less than $10,000,000 or if the obligation of the Lenders to make
Eurodollar Rate Advances shall then be suspended pursuant to Section 2.09 or 2.14 and (ii) the
Eurodollar Rate Advances may not be outstanding as part of more than six separate Revolving Credit
Borrowings.

               (c) Each Notice of Revolving Credit Borrowing and Notice of Canadian Borrowing shall be
irrevocable and binding on the applicable Borrower. In the case of any Revolving Credit Borrowing
that the related Notice of Revolving Credit Borrowing specifies is to be comprised of Eurodollar
Rate Advances, the US Borrowers
shall jointly and severally indemnify each Revolving Credit Lender against any loss, cost or
expense incurred by such Lender as a result of any failure to fulfill on or before the date
specified in such Notice of Revolving Credit Borrowing for such Revolving Credit Borrowing the
applicable conditions set forth in Article III, including, without limitation, any loss (including
loss of anticipated profits), cost or expense incurred by reason of the liquidation or reemployment
of deposits or other funds acquired by such Lender to fund the Revolving Credit Advance to be made
by such Lender as part of such Revolving Credit Borrowing when such Revolving Credit Advance, as a
result of such failure, is not made on such date.

               (d) Unless the Agent shall have received notice from a Lender prior to the date of any
Committed Borrowing that such Lender will not make available to the Agent such Lender’s ratable
portion of such Committed Borrowing, the Agent may assume that such Lender has made such portion
available to the Agent on the date of such Borrowing in accordance with subsection (a) of this
Section 2.02 and the Agent may, in reliance upon such assumption, make available to the applicable
Borrower on such date a corresponding amount. If and to the extent that such Lender shall not have
so made such ratable portion available to the Agent, such Lender and the US Borrowers, in the case
of a Revolving Credit Borrowing, or Lafarge Canada, in the case of a Canadian Borrowing, severally
agree to repay (and, in the case of a Revolving Credit Borrowing, all the US Borrowers jointly and

16

 

severally agree to repay) to the Agent forthwith on demand such corresponding amount together with
interest thereon, for each day from the date such amount is made available to the applicable
Borrower until the date such amount is repaid to the Agent, at (i) in the case of the Borrowers,
the interest rate applicable at the time to Advances comprising such Committed Borrowing and (ii)
in the case of such Lender, the Federal Funds Rate in the case of Revolving Credit Advances or the
Canadian Interbank Rate in the case of Canadian Prime Rate Borrowings. If such Lender shall repay
to the Agent such corresponding amount, such amount so repaid shall constitute such Lender’s
Committed Advance as part of such Committed Borrowing for purposes of this Agreement.

          (e) The failure of any Lender to make the Committed Advance to be made by it as part of any
Committed Borrowing shall not relieve any other Lender of its obligation, if any, hereunder to make
its Committed Advance on the date of such Committed Borrowing, but no Lender shall be responsible
for the failure of any other Lender to make the Committed Advance to be made by such other Lender
on the date of any Committed Borrowing.

          (f) If the respective Unused Revolving Credit Commitments of the Revolving Credit Lenders on
the first day of an Interest Period for any Revolving Credit Borrowing are different from the
respective Unused Revolving Credit Commitments of the Revolving Credit Lenders on the last day of
such Interest Period, the Agent shall so notify the Revolving Credit Lenders and the respective
Revolving Credit Advances shall be reallocated among the Revolving Credit Lenders so that, after
giving effect to such reallocation, the Revolving Credit Advances comprising such Revolving Credit
Borrowing and continuing into the subsequent Interest Period are funded by the Lenders ratably
according to their respective Unused Revolving Credit Commitments on such last day. Each Revolving
Credit Lender agrees that the conditions precedent set forth in Section 3.03 shall not apply to any
additional amounts required to be funded by such Lender pursuant to this Section 2.02(f).

          Section 2.03. The Competitive Bid Advances. (a) Each Lender severally agrees that
the US Borrowers may make Competitive Bid Borrowings under this Section 2.03 from time to time on
any Business Day during the period from the date hereof until the date occurring 30 days prior to
the Termination Date in the manner set forth below; provided that each Competitive Bid
Borrowing shall not exceed the aggregate amount of the Unused Revolving Credit Commitments of the
Lenders.

     (i) The Company may request on behalf of one or more US Borrowers a Competitive Bid
Borrowing under this Section 2.03 by delivering to the Agent, by telecopier, a notice of a
Competitive Bid Borrowing (a “Notice of Competitive Bid Borrowing”), in
substantially the form of Exhibit B-2 hereto, specifying therein the requested (v) date of
such proposed Competitive Bid Borrowing, (w) aggregate amount of such proposed Competitive
Bid Borrowing, (x) in the case of a Competitive Bid Borrowing consisting of LIBO Rate
Advances, Interest Period, or in the case of a Competitive Bid Borrowing consisting of Fixed
Rate Advances, maturity date for repayment of each Fixed Rate Advance to be made as part of
such Competitive Bid Borrowing (which maturity date may not be earlier than the date
occurring 30 days after the date of such Competitive Bid Borrowing or later than the
Termination Date), (y) interest payment date or dates relating thereto, and (z) other terms (if any) to be applicable
to such Competitive Bid Borrowing, not later than 10:00 A.M. (New York City time) (A) at
least one Business Day prior to the date of the proposed Competitive Bid Borrowing, if the
Company shall specify in the Notice of Competitive Bid Borrowing that the rates of interest
to be offered by the Lenders shall be fixed rates per annum (the Advances comprising any
such Competitive Bid Borrowing being referred to herein as “Fixed Rate Advances”)
and (B) at least four Business Days prior to the date of the proposed Competitive Bid
Borrowing, if the Company shall instead specify in the Notice of Competitive Bid Borrowing
that the Advances comprising such Competitive Bid Borrowing shall be LIBO Rate Advances.
Each Notice of Competitive Bid Borrowing shall be irrevocable and binding on the US
Borrowers. The Agent shall in turn promptly notify each Lender of each request for a
Competitive Bid Borrowing received by it from the Company by sending such Lender a copy of
the related Notice of Competitive Bid Borrowing.

     (ii) Each Lender may, if, in its sole discretion, it elects to do so, irrevocably offer
to make one or more Competitive Bid Advances to the US Borrowers as part of such proposed
Competitive Bid Borrowing at a rate or rates of interest specified by such Lender in its
sole discretion, by notifying the Agent (which shall give prompt notice thereof to the
Company), (A) before 9:30 A.M. (New York City time) on the date of such proposed Competitive
Bid Borrowing, in the case of a Competitive Bid

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Borrowing consisting of Fixed Rate Advances
and (B) before 10:00 A.M. (New York City time) three Business Days before the date of such
proposed Competitive Bid Borrowing, in the case of a Competitive Bid Borrowing consisting of
LIBO Rate Advances of the minimum amount and maximum amount of each Competitive Bid Advance
which such Lender would be willing to make as part of such proposed Competitive Bid
Borrowing (which amounts of such proposed Competitive Bid may, subject to the proviso to the
first sentence of this Section 2.03(a), exceed such Lender’s Revolving Credit Commitment, if
any), the rate or rates of interest therefor and such Lender’s Applicable Lending Office
with respect to such Competitive Bid Advance; provided that if the Agent in its
capacity as a Lender shall, in its sole discretion, elect to make any such offer, it shall
notify the Company of such offer at least 30 minutes before the time and on the date on
which notice of such election is to be given to the Agent, by the other Lenders. If any
Lender shall elect not to make such an offer, such Lender shall so notify the Agent before
10:00 A.M. (New York City time), and such Lender shall not be obligated to, and shall not,
make any Competitive Bid Advance as part of such Competitive Bid Borrowing; provided
that the failure by any Lender to give such notice shall not cause such Lender to be
obligated to make any Competitive Bid Advance as part of such proposed Competitive Bid
Borrowing.

     (iii) The Company shall, in turn, (A) before 10:30 A.M. (New York City time) on the
date of such proposed Competitive Bid Borrowing, in the case of a Competitive Bid Borrowing
consisting of Fixed Rate Advances and (B) before 11:00 A.M. (New York City time) three
Business Days before the date of such proposed Competitive Bid Borrowing, in the case of a
Competitive Bid Borrowing consisting of LIBO Rate Advances, either:

     (x) cancel such Competitive Bid Borrowing by giving the Agent notice to that
effect, or

     (y) accept for itself or on behalf of one or more Borrowers one or more of the
offers made by any Lender or Lenders pursuant to paragraph (ii) above, in its sole
discretion, by giving notice to the Agent of the amount of each Competitive Bid
Advance (which amount shall be equal to or greater than the minimum amount, and
equal to or less than the maximum amount, notified to the Company by the Agent on
behalf of such Lender for such Competitive Bid Advance pursuant to paragraph (ii)
above) to be made by each Lender as part of such Competitive Bid Borrowing, and
reject any remaining offers made by Lenders pursuant to paragraph (ii) above by
giving the Agent notice to that effect. The Company shall accept the offers made by
any Lender or Lenders to make Competitive Bid Advances in order of the lowest to the
highest rates of interest offered by such Lenders. If two or more Lenders have
offered the same interest rate, the amount to be borrowed at such interest rate will
be allocated among such Lenders in proportion to the amount that each such Lender
offered at such interest rate.

     (iv) If the Company notifies the Agent that such Competitive Bid Borrowing is cancelled
pursuant to paragraph (iii)(x) above, the Agent shall give prompt notice thereof to the
Lenders and such Competitive Bid Borrowing shall not be made.

     (v) If the Company accepts for itself or on behalf of one or more US Borrowers one or
more of the offers made by any Lender or Lenders pursuant to paragraph (iii)(y) above, the
Agent shall in turn promptly notify (A) each Lender that has made an offer as described in
paragraph (ii) above, of the date and aggregate amount of such Competitive Bid Borrowing and
whether or not any offer or offers made by such Lender pursuant to paragraph (ii) above have
been accepted by the Company, (B) each Lender that is to make a Competitive Bid Advance as
part of such Competitive Bid Borrowing, of the amount of each Competitive Bid Advance to be
made by such Lender as part of such Competitive Bid Borrowing, and (C) each Lender that is
to make a Competitive Bid Advance as part of such Competitive Bid Borrowing, upon receipt,
that the Agent has received forms of documents appearing to fulfill the applicable
conditions set forth in Article III. Each Lender that is to make a Competitive Bid Advance
as part of such Competitive Bid Borrowing shall, before 11:00 A.M. (New York City time) on
the date of such Competitive Bid Borrowing specified in the notice received from the Agent
pursuant to clause (A) of the preceding sentence or any later time when such Lender shall
have received notice from the Agent pursuant to clause (C) of the preceding sentence, make
available for the account of its Applicable Lending Office to the Agent at its

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address referred to in Section 10.02, in same day funds, such Lender’s portion of such Competitive
Bid Borrowing. Upon fulfillment of the applicable conditions set forth in Article III and
promptly after receipt by the Agent of such funds, the Agent will make such funds available
to the US Borrowers at the location specified by the Company in its Notice of Competitive
Bid Borrowing. Promptly after each Competitive Bid Borrowing the Agent will notify each
Lender of the amount of the Competitive Bid Borrowing and the dates upon which such
Competitive Bid Borrowing commenced and will terminate.

     (vi) If the Company notifies the Agent that it accepts for itself or on behalf of one
or more US Borrowers one or more of the offers made by any Lender or Lenders pursuant to
paragraph (iii)(y) above, such notice of acceptance shall be irrevocable and binding on the
US Borrowers. The US Borrowers shall jointly and severally indemnify each Lender against
any loss, cost or expense incurred by such Lender as a result of any failure to fulfill on
or before the date specified in the related Notice of Competitive Bid Borrowing for such
Competitive Bid Borrowing the applicable conditions set forth in Article III, including,
without limitation, any loss (including loss of anticipated profits), cost or expense
incurred by reason of the liquidation or reemployment of deposits or other funds acquired by
such Lender to fund the Competitive Bid Advance to be made by such Lender as part of such
Competitive Bid Borrowing when such Competitive Bid Advance, as a result of such failure, is
not made on such date.

          (b) Each Competitive Bid Borrowing shall be in an aggregate amount of $10,000,000 or an
integral multiple of $1,000,000 in excess thereof and, following the making of each Competitive Bid
Borrowing, the US Borrowers shall be in compliance with the limitation set forth in the proviso to
the first sentence of subsection (a) above.

          (c) Within the limits and on the conditions set forth in this Section 2.03, the US Borrowers
may from time to time borrow under this Section 2.03, repay or prepay pursuant to subsection (d)
below, and reborrow under this Section 2.03, provided that a Competitive Bid Borrowing
shall not be made within three Business Days of the date of any other Competitive Bid Borrowing.

          (d) The US Borrowers jointly and severally agree to repay to the Agent for the account of each
Lender that has made a Competitive Bid Advance, on the maturity date of each Competitive Bid
Advance (such maturity date being that specified by the Company for repayment of such Competitive
Bid Advance in the related Notice of Competitive Bid Borrowing delivered pursuant to subsection
(a)(i) above and provided in the Competitive Bid Note evidencing such Competitive Bid Advance), the
then unpaid principal amount of such Competitive Bid Advance. The US Borrowers shall have no right
to prepay any principal amount of any Competitive Bid Advance unless, and then only on the terms,
specified by the Company for such Competitive Bid Advance in the related Notice of Competitive Bid
Borrowing delivered pursuant to subsection (a)(i) above and set forth in the Competitive Bid Note
evidencing such Competitive Bid Advance.

          (e) The US Borrowers jointly and severally agree to pay interest on the unpaid principal
amount of each Competitive Bid Advance from the date of such Competitive Bid Advance to the date
the principal amount of such Competitive Bid Advance is repaid in full, at the rate of interest for
such Competitive Bid Advance specified by the Lender making such Competitive Bid Advance in its
notice with respect thereto delivered pursuant to subsection (a)(ii) above, payable on the interest
payment date or dates specified by the Company for such Competitive Bid Advance in the related
Notice of Competitive Bid Borrowing delivered pursuant to subsection (a)(i) above, as provided in
the Competitive Bid Note evidencing such Competitive Bid Advance. Upon the occurrence and during
the continuance of an Event of Default, the US Borrowers jointly and severally agree to pay
interest on the amount of unpaid principal of and interest on each Competitive Bid Advance owing to
a Lender, payable in arrears on the date or dates interest is payable thereon, at a rate per annum
equal at all times to 2% per annum above the rate per annum required to be paid on such Competitive
Bid Advance under the terms of the Competitive Bid Note evidencing such Competitive Bid Advance
unless otherwise agreed in such Competitive Bid Note.

          (f) The indebtedness of the US Borrowers resulting from each Competitive Bid Advance made to
any US Borrower as part of a Competitive Bid Borrowing shall be evidenced by a separate Competitive
Bid Note payable to the order of the Lender making such Competitive Bid Advance.

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          Section 2.04. Drawings of Bankers’ Acceptances or Acceptance Notes. (a) Request
for Drawing. Each Drawing shall be made on notice, given not later than 12:00 noon (Toronto
time) on a Business Day at least two Business Days prior to the date of the proposed Drawing, by
Lafarge Canada to the Agent, which shall give each Canadian Lender prompt notice thereof by
telecopier on such date. Each notice of a Drawing (a “Notice of Drawing”) shall be in
writing (including by telecopier), in substantially the form of Exhibit B-3 hereto, and shall be
confirmed by telephone immediately by Lafarge Canada, specifying therein the requested (i) date of
such Drawing (which shall be a Business Day), (ii) aggregate Face Amount of such Drawing and (iii)
initial Maturity Date for each Bankers’ Acceptance or Acceptance Note comprising part of such
Drawing; provided, however, that, if the Agent determines in good faith (which
determination shall be conclusive and binding upon Lafarge Canada) that the Drafts to be accepted
and purchased as part of any Drawing cannot, due solely to the requested aggregate Face Amount
thereof, be accepted and/or purchased ratably by the Canadian Lenders in accordance with Section
2.01(c), then the aggregate Face Amount of such Drawing (or the Face Amount of Bankers’ Acceptances
or Acceptance Notes to be created by any Canadian Lender) shall be reduced to such lesser amount as
the Agent determines will permit such Drafts comprising part of such Drawing to be so accepted and
purchased and, unless Lafarge Canada shall have given written notice to the contrary to the Agent,
each Canadian Lender shall fund the difference between such Lender’s ratable portion of the
original aggregate Face Amount of such Drawing and the Face Amount of the Bankers’ Acceptances or
Acceptance Notes to be created by such Lender after giving effect to such reduction in the form of
a Canadian Prime Rate Advance, which shall be deemed for all purposes hereof to be a Committed
Advance made pursuant to Section 2.01(b). The Agent agrees that it will, as promptly as
practicable, notify Lafarge Canada of the unavailability of Bankers’ Acceptances or Acceptance
Notes and, if applicable, of the date and the amount of each Canadian Prime Rate Advance made or to
be made in accordance with the immediately preceding sentence. Each Draft in connection with any
requested Drawing (A) shall be in a minimum amount of CN$1,000,000 or an integral multiple of
CN$100,000 in excess thereof, and (B) shall be dated the date of the proposed Drawing. Each
Canadian Lender shall, before 1:00 p.m. (Toronto time) on the date of each Drawing, complete one or
more Drafts in accordance with the related Notice of Drawing, accept such Drafts and purchase the
Bankers’ Acceptances or Acceptance Notes created thereby for the Drawing Purchase Price and shall,
before 1:00 p.m. (Toronto time) on such date, make available for the account of its Applicable
Lending Office to the Agent at its applicable Agent’s Account, in same day funds, the Drawing
Purchase Price payable by such Lender for such Drawing less the Drawing Fee payable to such Lender
with respect thereto under Section 2.05(c). Upon the fulfillment of the applicable conditions set
forth in Article III, the Agent will make the funds it has received from the Lenders available to
Lafarge Canada by crediting Lafarge Canada’s Account or at the applicable Agent’s Account.

          (b) Limitations on Drawings. Anything in Section 2.04(a) to the contrary
notwithstanding, (i) Lafarge Canada may not select a Drawing if the obligation of the Lenders to
purchase and accept Bankers’ Acceptances or Acceptance Notes shall then be suspended pursuant to
Section 2.04(d) or 2.14 and (ii) Bankers’ Acceptances or Acceptance Notes having a maturity of 14 days may not be outstanding as part of
more than five separate Canadian Borrowings.

          (c) Binding Effect of Notices of Drawing. Each Notice of Drawing shall be irrevocable
and binding on Lafarge Canada. In the case of any proposed Drawing, Lafarge Canada shall indemnify
each Canadian Lender against any loss, cost or expense incurred by such Lender as a result of any
failure to fulfill on or before the date specified in the Notice of Drawing for such Drawing the
applicable conditions set forth in Article III, including, without limitation, any loss (including
loss of anticipated profits), cost or expense incurred by reason of the liquidation or reemployment
of deposits or other funds acquired by such Lender to fund the Drawing Purchase Price to be paid by
such Lender as part of such Drawing when, as a result of such failure, such Drawing is not made on
such date.

          (d) Circumstances Making Bankers’ Acceptances or Acceptance Notes Unavailable. (i)
If, with respect to any proposed Drawing, the Agent determines in good faith that circumstances
affecting the money markets at the time any related Notice of Drawing is delivered or is
outstanding will result in no market for the Bankers’ Acceptances or Acceptance Notes to be created
in connection with such Drawing or an insufficient demand for such Bankers’ Acceptances or
Acceptance Notes to allow the Canadian Lenders creating such Bankers’ Acceptances to sell or trade
the Bankers’ Acceptances or Acceptance Notes to be created and purchased or discounted by them
hereunder in connection with such Drawing, then, upon notice to Lafarge Canada and the Canadian
Lenders, (A) the Notice of Drawing with respect to such proposed Drawing shall be cancelled and the
Drawing requested therein shall not be made and (B) the right of Lafarge Canada to request a
Drawing shall be

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suspended until the Agent shall notify Lafarge Canada that the circumstances
causing such suspension no longer exist. In the case of any such cancellation of a Notice of
Drawing, unless Lafarge Canada shall give written notice to the contrary to the Agent, the
cancellation of any such Notice of Drawing shall be deemed to be the giving by Lafarge Canada of a
Notice of Canadian Prime Rate Borrowing for Canadian Prime Rate Advances in an aggregate principal
amount equal to the aggregate Face Amount of such proposed Drawing and the Canadian Lenders shall,
subject to the terms and conditions hereof applicable to the making of Committed Advances, make
such Advances available to Lafarge Canada, if practicable, on the same Business Day, and otherwise
on the next Business Day. The Agent agrees that it will, as promptly as practicable, notify
Lafarge Canada of the unavailability of Bankers’ Acceptances or Acceptance Notes and, if
applicable, of the date and the amount of each Canadian Prime Rate Advance made or to be made in
accordance with the immediately preceding sentence.

     (ii) Upon the occurrence and during the continuance of any Default, the obligation of
the Canadian Lenders to purchase and/or accept Bankers’ Acceptances or Acceptance Notes
shall be suspended.

          (e) Assumptions of the Agent. Unless the Agent shall have received notice from a
Canadian Lender prior to the date of any Drawing that such Lender will not make available to it
such Lender’s ratable share of such Drawing in accordance with Section 2.04(a), the Agent may
assume that such Lender has made such ratable share available to it on the date of such Drawing in
accordance with Section 2.04(a) and the Agent may, in reliance upon such assumption, make available
to Lafarge Canada on such date a corresponding amount. If and to the extent that any such Lender
shall not have so made such ratable share available to the Agent, such Lender and Lafarge Canada
severally agree to repay or pay to the Agent forthwith on demand such corresponding amount,
together with interest thereon, for each day from the date such amount is made available to Lafarge
Canada until the date such amount is repaid or paid to the Agent, at (i) in the case of Lafarge
Canada, a rate per annum equal to the BA Rate used in calculating the Drawing Purchase Price with
respect to such Drawing, and (ii) in the case of such Lender, the Canadian Interbank Rate. If such
Lender shall pay to the Agent such corresponding amount, such amount so paid shall constitute such
Lender’s Bankers’ Acceptance or Acceptance Note as part of such Drawing for all purposes under this
Agreement.

          (f) Power of Attorney. To enable the Canadian Lenders to create Bankers’ Acceptances
in accordance with Section 2.01(c) and this Section 2.04, (i) Lafarge Canada hereby irrevocably
appoints each Canadian Lender as its attorney to sign and endorse on its behalf, manually or by
facsimile or mechanical signature, any Draft necessary to enable such Canadian Lender to create
Bankers’ Acceptances or Acceptance Notes. All Drafts signed or endorsed on Lafarge Canada’s behalf
by a Canadian Lender shall be binding on Lafarge Canada, all as if duly signed or endorsed by
Lafarge Canada. Each Canadian Lender shall (i) maintain a record with respect to
any Draft completed in accordance with this Section 2.04(f), voided by it for any reason,
accepted and purchased or purchased pursuant to this Section 2.04(f), and cancelled at its
respective maturity; and (ii) retain such records in the manner and for the statutory periods
provided by laws which apply to such Canadian Lender and make such records available to Lafarge
Canada acting reasonably. On request by Lafarge Canada, a Canadian Lender shall cancel and return
to the possession of Lafarge Canada all Drafts which have been pre-signed or pre-endorsed on behalf
of Lafarge Canada and which are held by such Canadian Lender and are not required to make Bankers’
Acceptances or Acceptance Notes in accordance with this Article II.

          (g) Distribution of Bankers’ Acceptances or Acceptance Notes. Bankers’ Acceptances or
Acceptance Notes purchased by a Canadian Lender in accordance with the terms of Section 2.01(c) and
this Section 2.04 may, in such Lender’s sole discretion, be held by such Lender for its own account
until the applicable Maturity Date or sold, rediscounted or otherwise disposed of by it at any time
prior thereto in any relevant market therefor.

          (h) Failure to Fund in Respect of Drawings. The failure of any Canadian Lender to
fund the Drawing Purchase Price to be funded by it as part of any Drawing shall not relieve any
other Canadian Lender of its obligation hereunder to fund its Drawing Purchase Price on the date of
such Drawing, but no Canadian Lender shall be responsible for the failure of any other Canadian
Lender to fund the Drawing Purchase Price to be funded by such other Lender on the date of any
Drawing.

          (i) Non-BA Lenders. Each Borrower and each Lender hereby acknowledges and agrees that
from time to time certain Lenders may not be authorized to or may, as a matter of general corporate
policy, elect not

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to accept Drafts or make Bankers’ Acceptances, and the Borrowers and each Lender
agree that any such Lender (a “Non-BA Lender”) may purchase Acceptance Notes of Lafarge
Canada in accordance with the provisions hereof in lieu of creating Bankers’ Acceptances for its
account. If Lafarge Canada requests a Canadian Borrowing by way of BA Advances, Lafarge Canada
shall deliver to each Non-BA Lender an Acceptance Note having the same maturity as the Bankers’
Acceptances to be accepted as part of such Canadian Borrowing and in an amount equal to the
aggregate Face Amount of the Bankers’ Acceptances such Non-BA Lender would otherwise have accepted.
Each Non-BA Lender hereby agrees to purchase an Acceptance Note on the date of each Drawing at a
purchase price equal to the aggregate Drawing Purchase Price that would have been applicable if
Bankers’ Acceptance drafts had been accepted and purchased by such Non-BA Lender as part of such
Canadian Borrowing. On the maturity date of each Acceptance Note, Lafarge Canada shall pay the
applicable Non-BA Lender an amount equal to the amount of such Acceptance Note. Acceptance Notes
shall be governed by the provisions of this Article II as if they were Bankers’ Acceptances.

          Section 2.05. Fees. (a) Facility Fee. The US Borrowers jointly and
severally agree to pay to the Agent for the account of each Lender a facility fee on the aggregate
amount of such Lender’s Revolving Credit Commitment from the Effective Date in the case of each
Initial Lender and from the effective date specified in the Assumption Agreement or in the
Assignment and Acceptance pursuant to which it became a Lender in the case of each other Lender
until the Termination Date at a rate per annum equal to the Applicable Percentage in effect from
time to time, payable in arrears quarterly on the last day of each March, June, September and
December, commencing September 30, 2005, and on the Termination Date.

          (b) Agent’s Fees. The US Borrowers jointly and severally agree to pay to the Agent
for its own account such fees as may from time to time be agreed between the Company and the Agent.

          (c) Drawing Fees. Lafarge Canada shall, on the date of each Drawing and on the date
of each renewal of any outstanding Bankers’ Acceptances or Acceptance Notes, pay to the Agent for
the ratable account of the Canadian Lenders accepting Drafts and purchasing Bankers’ Acceptances or
Acceptance Notes, the Drawing Fee with respect to such Bankers’ Acceptances or Acceptance Notes.
Lafarge Canada irrevocably authorizes each such Lender to deduct the Drawing Fee payable with
respect to each Bankers’ Acceptance or Acceptance Note of such Lender from the Drawing Purchase
Price payable by such Lender in respect of such Bankers’ Acceptance or Acceptance Note in
accordance with Section 2.04 and to apply such amount so withheld to the payment of such Drawing
Fee for the account of Lafarge Canada and, to the extent such Drawing Fee is so
withheld and legally permitted to be so applied, Lafarge Canada’s obligations under the
preceding sentence in respect of such Drawing Fee shall be satisfied.

          Section 2.06. Optional Termination or Reduction of the Commitments. The Company shall
have the right, upon at least three Business Days’ notice to the Agent, to terminate in whole or
permanently reduce ratably in part the Unused Revolving Credit Commitments or the Unused Canadian
Commitments of the Lenders, provided that each partial reduction shall be in the aggregate
amount of $10,000,000 or an integral multiple of $1,000,000 in excess thereof.

          Section 2.07. Repayment of Committed Advances. (a) Revolving Credit
Advances. The US Borrowers jointly and severally agree to repay to the Agent for the ratable
account of the Lenders on the Termination Date the aggregate principal amount of the Revolving
Credit Advances then outstanding.

          (b) Canadian Prime Rate Advances. Lafarge Canada agrees to repay to the Agent for the
ratable account of the Canadian Lenders on the Termination Date the aggregate principal amount of
the Canadian Prime Rate Advances then outstanding.

          (c) Bankers’ Acceptances or Acceptance Notes. Lafarge Canada shall, subject to
Sections 2.11(a) and 2.11(b), pay to the Agent for the ratable account of the Canadian Lenders on
the Maturity Date of any Bankers’ Acceptances or Acceptance Note issued by it an amount equal to
the aggregate Face Amount of all such Bankers’ Acceptances or Acceptance Notes maturing on such
date; provided that Lafarge Canada shall pay such amount in the currency in which such
Bankers’ Acceptances or Acceptance Notes were made. Any payment by Lafarge Canada of any Bankers’
Acceptances or Acceptance Notes in accordance with this Section 2.07(c) shall, to the extent of
such payment, satisfy the obligations of Lafarge Canada under the Bankers’ Acceptances or

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Acceptance Notes to which it relates and the Canadian Lender that has accepted such Bankers’
Acceptance or Acceptance Note shall, to the extent of such payment to such Lender, thereafter be
solely responsible for the payment thereof.

          Section 2.08. Interest on Committed Advances. (a) Scheduled Interest. The
US Borrowers jointly and severally agree to pay interest on the unpaid principal amount of each
Revolving Credit Advance owing to each Revolving Credit Lender, and Lafarge Canada agrees to pay
interest on the unpaid principal amount of each Canadian Prime Rate Advance, from the date of such
Committed Advance until such principal amount shall be paid in full, at the following rates per
annum:

     (i) Base Rate Advances. During such periods as such Committed Advance is a
Base Rate Advance, a rate per annum equal at all times to the sum of (x) the Base Rate in
effect from time to time plus (y) the Applicable Margin in effect from time to time
plus (z) the Applicable Utilization Fee in effect from time to time, payable in
arrears quarterly on the last day of each March, June, September and December during such
periods and on the date such Base Rate Advance shall be Converted or paid in full.

     (ii) Canadian Prime Rate Advances. For each Canadian Prime Rate Advance, a
rate per annum equal at all times to the sum of (x) the Canadian Prime Rate in effect from
time to time plus (y) the Applicable Margin in effect from time to time plus
(z) the Applicable Utilization Fee in effect from time to time, payable in arrears quarterly
on the last day of each March, June, September and December during such periods and on the
date such Canadian Prime Rate Advance shall be paid in full.

     (iii) Eurodollar Rate Advances. During such periods as such Committed Advance
is a Eurodollar Rate Advance, a rate per annum equal at all times during each Interest
Period for such Revolving Credit Advance to the sum of (x) the Eurodollar Rate for such
Interest Period for such Revolving Credit Advance plus (y) the Applicable Margin in
effect from time to time plus (z) the Applicable Utilization Fee in effect from time
to time, payable in arrears on the last day of such Interest
Period and, if such Interest Period has a duration of more than three months, on each
day that occurs during such Interest Period every three months from the first day of such
Interest Period and on the date such Eurodollar Rate Advance shall be Converted or paid in
full.

          (b) Default Interest. Upon the occurrence and during the continuance of an Event of
Default, the Agent may, and upon the request of the Required Lenders, shall, require the US
Borrowers jointly and severally, with respect to the Revolving Credit Advances, and Lafarge Canada,
with respect to Canadian Advances, to pay interest (“Default Interest”) on (i) the unpaid
principal amount of each Committed Advance owing to each Lender, payable in arrears on the dates
referred to in clause (a) above, at a rate per annum equal at all times to 2% per annum above the
rate per annum required to be paid on such Committed Advance pursuant to clause (a) above and (ii)
to the fullest extent permitted by law, the amount of any interest, fee or other amount payable
hereunder that is not paid when due, from the date such amount shall be due until such amount shall
be paid in full, payable in arrears on the date such amount shall be paid in full and on demand, at
a rate per annum equal at all times to 2% per annum above the rate per annum required to be paid on
Base Rate Advances pursuant to clause (a)(i) above, provided, however, that
following the acceleration of the Advances pursuant to Section 6.01, Default Interest shall accrue
and be payable hereunder whether or not previously required by the Agent.

          Section 2.09. Interest Rate Determination. (a) Each Reference Bank agrees to furnish
to the Agent timely information for the purpose of determining each Eurodollar Rate and each LIBO
Rate. If any one or more of the Reference Banks shall not furnish such timely information to the
Agent for the purpose of determining any such interest rate, the Agent shall determine such
interest rate on the basis of timely information furnished by the remaining Reference Banks. The
Agent shall give prompt notice to the Company and the Lenders of the applicable interest rate
determined by the Agent for purposes of Section 2.08(a), and the rate, if any, furnished by each
Reference Bank for the purpose of determining the interest rate under Section 2.08(a)(iii).

          (b) If, with respect to any Eurodollar Rate Advances, the Required Lenders notify the Agent
that the Eurodollar Rate for any Interest Period for such Advances will not adequately reflect the
cost to such Required Lenders of making, funding or maintaining their respective Eurodollar Rate
Advances for such Interest Period, the Agent shall forthwith so notify the Company and the
Revolving Credit Lenders, whereupon (i) each

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Eurodollar Rate Advance will automatically, on the
last day of the then existing Interest Period therefor, Convert into a Base Rate Advance, and (ii)
the obligation of the Revolving Credit Lenders to make, or to Convert Revolving Credit Advances
into, Eurodollar Rate Advances shall be suspended until the Agent shall notify the Company and the
Revolving Credit Lenders that the circumstances causing such suspension no longer exist.

          (c) If the applicable US Borrower shall fail to select the duration of any Interest Period for
any Eurodollar Rate Advances in accordance with the provisions contained in the definition of
“Interest Period” in Section 1.01, the Agent will forthwith so notify such Borrower and the
Revolving Credit Lenders and such Advances will automatically, on the last day of the then existing
Interest Period therefor, be Converted into Base Rate Advances.

          (d) On the date on which the aggregate unpaid principal amount of Eurodollar Rate Advances
comprising any Borrowing shall be reduced, by payment or prepayment or otherwise, to less than
$10,000,000, such Advances shall automatically Convert into Base Rate Advances.

          (e) Upon the occurrence and during the continuance of any Event of Default, (i) each
Eurodollar Rate Advance will automatically, on the last day of the then existing Interest Period
therefor, Convert into a Base Rate Advance and (ii) the obligation of the Revolving Credit Lenders
to make, or to Convert Advances into, Eurodollar Rate Advances shall be suspended.

          (f) (i) If Moneyline Telerate Markets Page 3750 is unavailable and fewer than two Reference
Banks furnish timely information to the Agent for determining the Eurodollar Rate or LIBO Rate for
any Eurodollar Rate Advances or LIBO Rate Advances, as the case may be,

     (A) the Agent shall forthwith notify the Company and the Revolving Credit Lenders that
the interest rate cannot be determined for such Eurodollar Rate Advances or LIBO Rate
Advances, as the case may be,

     (B) with respect to Eurodollar Rate Advances, each such Advance will automatically, on
the last day of the then existing Interest Period therefor, be prepaid by the US Borrowers
or, at the applicable US Borrower’s option, be automatically Converted into a Base Rate
Advance (or if such Advance is then a Base Rate Advance, will continue as a Base Rate
Advance), and

     (C) the obligation of the Lenders to make Eurodollar Rate Advances or LIBO Rate
Advances or to Convert Revolving Credit Advances into Eurodollar Rate Advances shall be
suspended until the Agent shall notify the Company and the Lenders that the circumstances
causing such suspension no longer exist.

          (ii) If the Reuters Screen CDOR Page is not available for the timely determination of the BA
Rate, and fewer than two Canadian Reference Lenders are able to furnish timely information to the
Agent for determining the BA Rate for any Bankers’ Acceptances or Acceptance Notes,

     (A) the Agent shall forthwith notify Lafarge Canada and the Canadian Lenders that the
interest rate cannot be determined for such Bankers’ Acceptances or Acceptance Notes, and

     (B) the obligation of the Canadian Lenders to make, or to renew, Bankers’ Acceptances
or Acceptance Notes shall be suspended until the Agent shall notify Lafarge Canada and the
Canadian Lenders that the circumstances causing such suspension no longer exist.

          (g) Interest Act (Canada). Whenever a rate of interest hereunder is calculated on the
basis of a year (the “deemed year”) which contains fewer days than the actual number of days in the
calendar year of calculation, such rate of interest shall be expressed as a yearly rate for
purposes of the Interest Act (Canada) by multiplying such rate of interest by the actual number of
days in the calendar year of calculation and dividing it by the number of days in the deemed year.

24

 

          (h) Nominal Rates; No Deemed Reinvestment. The principle of deemed reinvestment of
interest shall not apply to any interest calculation under this Agreement; all interest payments to
be made hereunder shall be paid without allowance or deduction for reinvestment or otherwise,
before and after maturity, default and judgment. The rates of interest specified in this Agreement
are intended to be nominal rates and not effective rates. Interest calculated hereunder shall be
calculated using the nominal rate method and not the effective rate method of calculation.

          (i) Interest Paid by Lafarge Canada. Notwithstanding any provision of this Agreement,
in no event shall the aggregate “interest” (as defined in Section 347 of the Criminal Code
(Canada)) payable by Lafarge Canada under this Agreement exceed the effective annual rate of
interest on the “credit advanced” (as defined in the Section) under this Agreement lawfully
permitted by that Section and, if any payment, collection or demand pursuant to this Agreement in
respect of “interest” (as defined in that Section) is determined to be contrary to the provisions
of that Section, such payment, collection or demand shall be deemed to have been made by mutual
mistake of Lafarge Canada and the Canadian Lenders and the amount of such payment or collection
shall be refunded to Lafarge Canada. For the purposes of this Agreement, the effective annual rate
of interest shall be determined in accordance with generally accepted actuarial practices and
principles over the relevant term and, in the event of a dispute, a certificate of a Fellow of the
Canadian Institute of Actuaries appointed by the Canadian Lenders will be prima facie evidence of
such rate.

          Section 2.10. Optional Conversion of Revolving Credit Advances. Any US Borrower may
on any Business Day, upon notice given to the Agent not later than 11:00 A.M. (New York City time)
on the third Business Day prior to the date of the proposed Conversion and subject to the
provisions of Sections 2.09 and 2.14, Convert all or a portion of Revolving Credit Advances made to
it of one Type comprising the same Borrowing into Revolving Credit Advances of the other Type;
provided, however, that any Conversion of Eurodollar Rate Advances into Base Rate
Advances shall be made only on the last day of an Interest Period for such Eurodollar Rate
Advances, any Conversion of Base Rate Advances into Eurodollar Rate Advances shall be in an amount
not less than the minimum amount specified in Section 2.02(b) and no Conversion of any Revolving
Credit Advances shall result in more separate Revolving Credit Borrowings than permitted under
Section 2.02(b). Each such notice of a Conversion shall, within the restrictions specified above,
specify (i) the date of such Conversion, (ii) the Revolving Credit Advances to be Converted, and
(iii) if such Conversion is into Eurodollar Rate Advances, the duration of the initial Interest
Period for each such Advance. Each notice of Conversion shall be irrevocable and binding on the
applicable US Borrower.

          Section 2.11. Renewal and Conversion of Bankers’ Acceptances. (a) Optional
Renewal. Lafarge Canada may on any Business Day, upon notice given to the Agent not later than
12:00 noon (Toronto time) on a Business Day at least two Business Days prior to the date of the
proposed renewal and subject to the provisions of Section 2.14, renew all or any portion of the
Bankers’ Acceptances and Acceptance Notes comprising part of the same Drawing; provided,
however, that:

     (i) any renewal of Bankers’ Acceptances and Acceptance Notes shall be made only on the
then existing Maturity Date therefor;

     (ii) each renewal of Bankers’ Acceptances and Acceptance Notes comprising part of the
same Drawing shall be made ratably among the Canadian Lenders holding such Bankers’
Acceptances and Acceptance Notes in accordance with the respective amount of such Bankers’
Acceptances or Acceptance Note so held; and

     (iii) no renewal of any Bankers’ Acceptance or Acceptance Note may be made at any time
that a Default has occurred and is continuing.

Each such notice of renewal shall, within the restrictions set forth above, specify (A) the date of
such renewal (which shall be the then existing Maturity Date of such Bankers’ Acceptances and
Acceptance Notes and shall be a Business Day), (B) the Bankers’ Acceptances and Acceptance Notes to
be renewed, (C) if less than all of the Bankers’ Acceptances and Acceptance Notes comprising part
of any Drawing are to be renewed, the aggregate Face Amount for such renewal and (D) the term to
maturity of the renewed Bankers’ Acceptances and Acceptance Notes (which shall comply with the
definition of “Maturity Date” in Section 1.01); provided, however, that, if the
Agent

25

 

determines in good faith (which determination shall be conclusive and binding upon Lafarge
Canada) that the Bankers’ Acceptances and Acceptance Notes cannot, due solely to the requested
aggregate Face Amount thereof, be renewed ratably by the Canadian Lenders, the aggregate Face
Amount of such renewal (or the Face Amount of Bankers’ Acceptances and Acceptance Notes to be
created or accepted by any Canadian Lender) shall be reduced to such lesser amount as the Agent
determines will permit such renewal to be so made and each Canadian Lender shall fund the
difference between such Lender’s ratable portion of the original aggregate Face Amount of such
renewal and the Face Amount of the Bankers’ Acceptances or Acceptance Notes to be created by such
Lender after giving effect to such reduction in the form of a Canadian Prime Rate Advance, which
shall be deemed for all purposes hereof to be a Committed Advance made pursuant to Section 2.01(b).
Each notice of renewal under this Section 2.11 shall be irrevocable and binding on Lafarge Canada.
Upon any renewal of Bankers’ Acceptances and Acceptance Notes comprising part of any Drawing in
accordance with this Section 2.11(a), the Lenders holding the Bankers’ Acceptances or Acceptance
Notes to be renewed shall exchange such maturing Bankers’ Acceptances or Acceptance Notes for new
Bankers’ Acceptances or Acceptance Notes containing the terms set forth in the applicable notice of
renewal, and the Drawing Purchase Price payable for each such renewal shall be applied, together
with other funds, if necessary, available to Lafarge Canada, to reimburse the Bankers’ Acceptances
and Acceptance Notes otherwise maturing on such date. Lafarge Canada hereby irrevocably authorizes
and directs each Canadian Lender to apply the proceeds of each renewed Bankers’ Acceptance or
Acceptance Note owing to it to the reimbursement, in accordance with this Section 2.11(a), of the
Bankers’ Acceptances or Acceptance Notes owing to such Lender and maturing on such date.

          (b) Optional Conversion. Lafarge Canada may on any Business Day, upon notice given to
the Agent not later than 12:00 noon (Toronto time) on a Business Day at least two Business Days
prior to the date of the proposed Conversion and subject to the provisions of Section 2.14, Convert all or any
portion of the Bankers’ Acceptances and Acceptance Notes comprising part of the same Drawing made
by it to a Borrowing comprised of Canadian Prime Rate Advances; provided, however,
that:

     (i) any Conversion of Bankers’ Acceptances or Acceptance Notes shall be made only on
the then existing Maturity Date for such Bankers’ Acceptances or Acceptance Notes;

     (ii) each Conversion of Bankers’ Acceptances and Acceptance Notes comprising part of
the same Drawing shall be made ratably among the Canadian Lenders holding such Bankers’
Acceptances and Acceptance Notes in accordance with the respective amounts of such Bankers’
Acceptances or Acceptance Notes so held; and

     (iii) no Conversion may be made if (A) the amount of the Canadian Prime Rate Advance to
be made by any Lender in connection with such Conversion would exceed such Lender’s Unused
Canadian Commitment in effect at the time of such Conversion.

Each such notice of Conversion shall, within the restrictions set forth above, specify (A) the date
of such Conversion (which shall be the then existing Maturity Date of such Bankers’ Acceptances and
Acceptance Notes and shall be a Business Day), (B) the Bankers’ Acceptances and Acceptance Notes to
be Converted and (C) if less than all of the Bankers’ Acceptances and Acceptance Notes comprising
part of any Drawing are to be Converted, the aggregate Face Amount of such Conversion. Each notice
of Conversion under this Section 2.11 shall be irrevocable and binding on Lafarge Canada. Upon any
Conversion of Bankers’ Acceptances and Acceptance Notes comprising part of the same Drawing in
accordance with this Section 2.11(b), the obligation of Lafarge Canada to reimburse the Lenders
under Section 2.15 in respect of the Bankers’ Acceptances and Acceptance Notes otherwise maturing
on such date shall, to the extent of such conversion, be Converted to an obligation to reimburse
the Canadian Lenders making the Canadian Prime Rate Advances made in respect of such maturing
Bankers’ Acceptances and Acceptance Notes on such date ratably in accordance with the amount of the
Canadian Prime Rate Advances held by such Lender at the time of reimbursement. Lafarge Canada
hereby irrevocably authorizes and directs each Canadian Lender to apply the net proceeds of each
Canadian Prime Rate Advance made by such Lender pursuant to this Section 2.11(b) to the
reimbursement of the Bankers’ Acceptances or Acceptance Notes owing to such Lender and maturing on
such date.

          (c) Mandatory Conversion. If any Default shall have occurred and be continuing or if
Lafarge Canada shall fail (i) to deliver a properly completed notice of renewal under Section
2.11(b) or a properly

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completed notice of Conversion under Section 2.13(b) indicating its intention
to renew or to Convert any maturing Bankers’ Acceptances or Acceptance Notes or (ii) to reimburse
the Canadian Lenders for any Bankers’ Acceptances and Acceptance Notes comprising part of the same
Drawing pursuant to Section 2.07, the Agent will forthwith so notify Lafarge Canada and the
Canadian Lenders, whereupon each such Bankers’ Acceptance and Acceptance Note will automatically,
on the then existing Maturity Date of such Bankers’ Acceptances and Acceptance Notes, Convert into
a Canadian Prime Rate Advance.

          Section 2.12. Prepayments of Revolving Credit Advances. (a) Optional. The
applicable US Borrower may, upon notice at least three Business Days’ prior to the date of such
prepayment, in the case of Eurodollar Rate Advances, and not later than 11:00 A.M. (New York City
time) on the date of such prepayment, in the case of Base Rate Advances, to the Agent stating the
proposed date and aggregate principal amount of the prepayment, and if such notice is given the US
Borrowers jointly and severally agree to, prepay the outstanding principal amount of the Revolving
Credit Advances comprising part of the same Revolving Credit Borrowing in whole or ratably in part,
together with accrued interest to the date of such prepayment on the principal amount prepaid;
provided, however, that (x) each partial prepayment shall be in an aggregate
principal amount of $10,000,000 or an integral multiple of $1,000,000 in excess thereof and (y) in
the event of any such prepayment of a Eurodollar Rate Advance, the US Borrowers shall be obligated,
jointly and severally, to reimburse the Revolving Credit Lenders in respect thereof pursuant to
Section 10.04(c).

          (b) Mandatory. (i) If, on any date, the Agent notifies the Company that the sum of
(A) the aggregate principal amount of all Advances denominated in US Dollars then outstanding plus
(B) the Equivalent in US Dollars (determined on the third Business Day prior to such date) of the aggregate
principal amount of all Advances denominated in Canadian Dollars then outstanding exceeds 105% of
the aggregate Revolving Credit Commitments of the Lenders on such date, the Borrowers shall, as
soon as practicable and in any event within two Business Days after receipt of such notice, prepay
the outstanding principal amount of any Advances owing by the Borrowers in an aggregate amount
sufficient to reduce such sum to an amount not to exceed 100% of the aggregate Revolving Credit
Commitments of the Lenders on such date together with any interest accrued to the date of such
prepayment on the aggregate principal amount of Advances prepaid. The Agent shall give prompt
notice of any prepayment required under this Section 2.12(b) to the Company and the Lenders, and
shall provide prompt notice to the Company of any such notice of required prepayment received by it
from any Lender.

          (ii) If, on any date, the Agent notifies the Company that the Equivalent in US Dollars
(determined on the third Business Day prior to such date) of the aggregate principal amount of all
Advances denominated in Canadian Dollars then outstanding exceeds 105% of the aggregate Canadian
Commitments of the Lenders on such date, Lafarge Canada shall, as soon as practicable and in any
event within two Business Days after receipt of such notice, prepay the outstanding principal
amount of any Canadian Advances owing by Lafarge Canada in an aggregate amount sufficient to reduce
such sum to an amount not to exceed 100% of the aggregate Canadian Commitments of the Lenders on
such date together with any interest accrued to the date of such prepayment on the aggregate
principal amount of Canadian Advances prepaid. If no Canadian Prime Rate Advances are then
outstanding, or if after the prepayment of all Canadian Prime Rate Advances then outstanding the
aggregate principal amount of all Advances denominated in Canadian Dollars exceeds 100% of the
aggregate Canadian Commitments, an amount equal to the aggregate Face Amount of Bankers’
Acceptances and Acceptance Notes having a Face Amount equal to such excess over 100% of the
aggregate Canadian Commitments shall be deposited by Lafarge Canada into the Cash Collateral
Account until the Maturity Date of each such Bankers’ Acceptance or Acceptance Note and upon the
Maturity Date of any Bankers’ Acceptance and Acceptance Note in respect of which any such deposit
has been made, the Agent shall be, and hereby is, authorized (without notice to or any further
action by Lafarge Canada) to apply such amount (or the applicable portion thereof) to the
reimbursement of such Bankers’ Acceptance and Acceptance Note. The Agent shall give prompt notice
of any prepayment required under this Section 2.12(b) to the Company and the Lenders, and shall
provide prompt notice to the Company of any such notice of required prepayment received by it from
any Lender.

          (iii) Each prepayment made pursuant to this Section 2.12(b) shall be made together with any
interest accrued to the date of such prepayment on the principal amounts prepaid and, in the case
of any prepayment of a Eurodollar Rate Advance or a LIBO Rate Advance on a date other than the last
day of an Interest Period or at its maturity, any additional amounts which the applicable US
Borrower shall be obligated to reimburse to the Lenders in respect thereof pursuant to Section
10.04(b).

27

 

          Section 2.13. Increased Costs. (a) If, due to either (i) the introduction of or any
change in or in the interpretation of any law or regulation or (ii) the compliance with any
guideline or request from any central bank or other governmental authority (whether or not having
the force of law), there shall be (A) any increase in the cost to any Lender of agreeing to make or
making, funding or maintaining Eurodollar Rate Advances or LIBO Rate Advances, (B) any increase in
the cost to any Canadian Lender of agreeing to perform or of performing its obligations under this
Agreement under or in respect of Bankers’ Acceptances or Acceptance Notes or (C) any reduction in
any amount payable to, or any increase in any payment required to be made by, or any forgiveness or
reduction of effective return to, any Canadian Lender under this Agreement under or in respect of
any Bankers’ Acceptances or Acceptance Notes (excluding for purposes of this Section 2.13 any such
increased costs resulting from (i) Taxes or Other Taxes (as to which Section 2.16 shall govern) and
(ii) changes in the basis of taxation of overall net income or overall gross income by the United
States or by the foreign jurisdiction or state under the laws of which such Lender is organized or
has its Applicable Lending Office or any political subdivision thereof), then the Company shall
from time to time, upon demand by such Lender (with a copy of such demand to the Agent), pay to the
Agent for the account of such Lender additional amounts sufficient to compensate such Lender for
such increased cost. A certificate as to the amount of such increased cost, submitted to the
Company and the Agent by such Lender, shall be conclusive and binding for all purposes, absent
manifest error.

          (b) If any Lender determines that compliance with any law or regulation or any guideline or
request from any central bank or other governmental authority (whether or not having the force of
law) affects or would affect the amount of capital required or expected to be maintained by such
Lender or any corporation controlling such Lender and that the amount of such capital is increased
by or based upon the existence of such Lender’s commitment to lend or to accept, purchase and/or
discount Bankers’ Acceptances or Acceptance Notes hereunder and other commitments of such type or
the purchase and/or acceptance and maintenance of Bankers’ Acceptances or Acceptance Notes, then,
upon demand by such Lender (with a copy of such demand to the Agent), the Company shall pay to the
Agent for the account of such Lender, from time to time as specified by such Lender, additional
amounts sufficient to compensate such Lender or such corporation in the light of such
circumstances, to the extent that such Lender reasonably determines such increase in capital to be
allocable to the existence of such Lender’s commitment to lend or to accept, purchase and/or
discount Bankers’ Acceptances or Acceptance Notes or to the purchase and/or acceptance and
maintenance of Bankers’ Acceptances or Acceptance Notes hereunder. A certificate as to such
amounts submitted to the Company and the Agent by such Lender shall be conclusive and binding for
all purposes, absent manifest error.

          Section 2.14. Illegality. (a) Notwithstanding any other provision of this Agreement,
if any Lender shall notify the Agent that the introduction of or any change in or in the
interpretation of any law or regulation makes it unlawful, or any central bank or other
governmental authority asserts that it is unlawful, for any Lender or its Eurodollar Lending Office
to perform its obligations hereunder to make Eurodollar Rate Advances or to fund or maintain
Eurodollar Rate Advances hereunder, (i) each Eurodollar Rate Advance will automatically, upon such
demand, Convert into a Base Rate Advance and (ii) the obligation of the Lenders to make Eurodollar
Rate Advances or LIBO Rate Advances or to Convert Revolving Credit Advances into Eurodollar Rate
Advances shall be suspended until the Agent shall notify the Company and the Lenders that the
circumstances causing such suspension no longer exist.

          (b) Notwithstanding any other provision of this Agreement, if the introduction of or any
change in the interpretation of any law or regulation (including, without limitation, any change in
acceptance limits imposed on any Lender) shall make it unlawful, or any central bank or other
governmental authority shall assert that it is unlawful, for any Canadian Lender or any of their
respective BA Lending Offices to perform its obligations hereunder to complete and accept Drafts,
to purchase Bankers’ Acceptances or Acceptance Notes or to continue to fund or maintain Bankers’
Acceptances or Acceptance Notes hereunder, then, upon notice thereof and demand therefor by such
Lender to Lafarge Canada through the Agent (i) an amount equal to the aggregate Face Amount of all
Bankers’ Acceptances or Acceptance Notes outstanding at such time shall, upon such demand (which
shall only be made if deemed necessary by the applicable Lender to comply with applicable law), be
deposited by Lafarge Canada into the Cash Collateral Account until the Maturity Date of each such
Bankers’ Acceptance, (ii) upon the Maturity Date of any Bankers’ Acceptance or Acceptance Note in
respect of which any such deposit has been made, the Agent shall be, and hereby is, authorized
(without notice to or any further action by Lafarge Canada) to apply such amount (or the applicable
portion thereof) to the reimbursement of such Bankers’ Acceptance or Acceptance Note and (iii) the
obligation of the Lenders to complete and accept Drafts and/or to purchase Bankers’ Acceptances

28

 

or Acceptance Notes shall be suspended until the Agent shall notify Lafarge Canada that such Lender
has determined that the circumstances causing such suspension no longer exist.

          Section 2.15. Payments and Computations. (a) The US Borrowers shall make each
payment, irrespective of any right of counterclaim or set-off, hereunder not later than 11:00 A.M.
(New York City time) on the day when due to the Agent in US Dollars at the applicable Agent’s
Account in same day funds. Lafarge Canada shall make each payment, irrespective of any right of
counterclaim or set-off, hereunder not later than 11:00 A.M. (Toronto time) on the day when due to
the Agent in Canadian Dollars at the applicable Agent’s Account in same day funds. The Agent will
promptly thereafter cause to be distributed like funds relating to the payment of principal or
interest or facility fees ratably (other than amounts payable pursuant to Section 2.03, 2.13, 2.16
or 10.04(c)) to the applicable Lenders for the account of their respective Applicable Lending
Offices, and like funds relating to the payment of any other amount payable to any Lender to such
Lender for the account of its Applicable Lending Office, in each case to be applied in accordance
with the terms of this Agreement. Upon any Assuming Lender becoming a Lender hereunder as a result
of a Commitment Increase pursuant to Section 2.20, and upon the Agent’s receipt of such Lender’s
Assumption Agreement and recording of the information contained therein in the Register, from and after
the applicable Increase Date the Agent shall make all payments hereunder and under any Notes issued
in connection therewith in respect of the interest assumed thereby to the Assuming Lender. Upon
its acceptance of an Assignment and Acceptance and recording of the information contained therein
in the Register pursuant to Section 10.07(c), from and after the effective date specified in such
Assignment and Acceptance, the Agent shall make all payments hereunder and under the Notes in
respect of the interest assigned thereby to the Lender assignee thereunder, and the parties to such
Assignment and Acceptance shall make all appropriate adjustments in such payments for periods prior
to such effective date directly between themselves.

          (b) Each Borrower hereby authorize each Lender, if and to the extent payment owed to such
Lender is not made when due hereunder or under the Note held by such Lender, to charge from time to
time against any or all of such Borrower’s accounts with such Lender any amount so due.

          (c) All computations of interest based on the Base Rate and the Canadian Prime Rate shall be
made by the Agent on the basis of a year of 365 or 366 days, as the case may be, all computations
of interest based on the Eurodollar Rate, the LIBO Rate or the Federal Funds Rate or in respect of
Fixed Rate Advances and of facility fees shall be made by the Agent on the basis of a year of 360
days and all computations of interest based on the BA Rate shall be made by the Agent on the basis
of a year of 365 days, in each case for the actual number of days (including the first day but
excluding the last day) occurring in the period for which such interest or facility fees are
payable. Each determination by the Agent of an interest rate hereunder shall be conclusive and
binding for all purposes, absent manifest error.

          (d) Whenever any payment hereunder or under the Notes or in respect of Bankers’ Acceptances or
Acceptance Notes shall be stated to be due on a day other than a Business Day, such payment shall
be made on the next succeeding Business Day, and such extension of time shall in such case be
included in the computation of payment of interest or facility fee, as the case may be;
provided, however, that, if such extension would cause payment of interest on or
principal of Eurodollar Rate Advances or LIBO Rate Advances to be made in the next following
calendar month, such payment shall be made on the next preceding Business Day.

          (e) Unless the Agent shall have received notice from the applicable Borrower prior to the date
on which any payment is due to the Lenders hereunder that such Borrower will not make such payment
in full, the Agent may assume that such Borrower has made such payment in full to the Agent on such
date and the Agent may, in reliance upon such assumption, cause to be distributed to each Lender on
such due date an amount equal to the amount then due such Lender. If and to the extent such
Borrower shall not have so made such payment in full to the Agent, each Lender shall repay to the
Agent forthwith on demand such amount distributed to such Lender together with interest thereon,
for each day from the date such amount is distributed to such Lender until the date such Lender
repays such amount to the Agent, in the case of amount denominated in US Dollars, at the Federal
Funds Rate or, in the case of amounts denominated in Canadian Dollars, at the Canadian Interbank
Rate.

          Section 2.16. Taxes. (a) Any and all payments by the Borrowers hereunder or under
the Notes or in respect of any Bankers’ Acceptances or Acceptance Notes shall be made, in
accordance with Section 2.15, free and clear of and without deduction for any and all present or
future taxes, levies, imposts, deductions, charges or

29

 

withholdings, and all liabilities with respect thereto, excluding, in the case of each Lender and the Agent, taxes imposed on its overall
net income, and franchise taxes imposed on it in lieu of net income taxes, by the jurisdiction
under the laws of which such Lender or the Agent (as the case may be) is organized or any political
subdivision thereof and, in the case of each Lender, taxes imposed on its overall net income, and
franchise taxes imposed on it in lieu of net income taxes, by the jurisdiction of such Lender’s
Applicable Lending Office or any political subdivision thereof (all such non-excluded taxes,
levies, imposts, deductions, charges, withholdings and liabilities in respect of payments hereunder
or under the Notes or in respect of a Bankers’ Acceptance or Acceptance Note being hereinafter
referred to as “Taxes”). If any Borrower shall be required by law to deduct any Taxes from or in
respect of any sum payable hereunder or under any Note or in respect of a Bankers’ Acceptance or
Acceptance Note to any Lender or the Agent, (i) the sum payable shall be increased as may be
necessary so that after making all required deductions (including deductions applicable to
additional sums payable under this Section 2.16) such Lender or the Agent (as the case may be)
receives an amount equal to the sum it would have received had no such deductions been made, (ii)
the applicable Borrower shall make such deductions and (iii) the applicable Borrower shall pay the
full amount deducted to the relevant taxation authority or other authority in accordance with
applicable law.

          (b) In addition, the Borrowers shall pay any present or future stamp or documentary taxes or
any other excise or property taxes, charges or similar levies that arise from any payment made
hereunder or under the Notes or in respect of a Bankers’ Acceptance or Acceptance Note or from the
execution, delivery or registration of, performing under, or otherwise with respect to, this
Agreement or the Notes or in respect of a Bankers’ Acceptance or Acceptance Note (hereinafter
referred to as “Other Taxes”).

          (c) The US Borrowers shall jointly and severally indemnify each Lender and the Agent for and
hold it harmless against the full amount of Taxes or Other Taxes (including, without limitation,
taxes of any kind imposed by any jurisdiction on amounts payable under this Section 2.16) imposed
on or paid by such Lender or the Agent (as the case may be) and any liability (including penalties,
interest and expenses) arising therefrom or with respect thereto. This indemnification shall be
made within 30 days from the date such Lender or the Agent (as the case may be) makes written
demand therefor.

          (d) Within 30 days after the date of any payment of Taxes, the applicable Borrower shall
furnish to the Agent, at its address referred to in Section 10.02, the original or a certified copy
of a receipt evidencing such payment. In the case of any payment hereunder or under the Notes or
in respect of a Bankers’ Acceptance or Acceptance Note by or on behalf of such Borrower through an
account or branch outside the United States or by or on behalf of such Borrower by a payor that is
not a United States person or a corporation organized under the laws of Canada or any political
subdivision thereof, if such Borrower determines that no Taxes are payable in respect thereof, such
Borrower shall furnish, or shall cause such payor to furnish, to the Agent, at such address, an
opinion of counsel acceptable to the Agent stating that such payment is exempt from Taxes. For
purposes of this subsection (d) and subsection (e), the terms “United States” and
“United States person” shall have the meanings specified in Section 7701 of the Internal
Revenue Code.

          (e) Each Lender organized under the laws of a jurisdiction outside the United States, on or
prior to the date of its execution and delivery of this Agreement in the case of each Initial
Lender and on the date of the Assumption Agreement or the Assumption Agreement or the Assignment
and Acceptance pursuant to which it becomes a Lender in the case of each other Lender, and from
time to time thereafter as requested in writing by the Company (but only so long as such Lender
remains lawfully able to do so), shall provide each of the Agent and the Company with two original
Internal Revenue Service forms W-8BEN or W-8ECI, as appropriate, or any successor or other form
prescribed by the Internal Revenue Service, certifying that such Lender is exempt from or entitled
to a reduced rate of United States withholding tax on payments pursuant to this Agreement or the
Notes or in respect of any Bankers’ Acceptances or Acceptance Notes. If the form provided by a
Lender at the time such Lender first becomes a party to this Agreement indicates a United States
interest withholding tax rate in excess of zero, withholding tax at such rate shall be considered
excluded from Taxes unless and until such Lender provides the appropriate forms certifying that a
lesser rate applies, whereupon withholding tax at such lesser rate only shall be considered
excluded from Taxes for periods governed by such form; provided, however, that, if
at the date of the Assignment and Acceptance pursuant to which a Lender assignee becomes a party to
this Agreement, the Lender assignor was entitled to payments under subsection (a) in respect of
United States withholding tax with respect to interest paid at such date, then, to such extent, the
term Taxes shall include (in addition to withholding taxes that may be imposed in the future or
other amounts otherwise includable in Taxes) United States withholding tax, if any,

30

 

applicable with respect to the Lender assignee on such date. If any form or document referred to in this
subsection (e) requires the disclosure of information, other than information necessary to compute
the tax payable and information required on the date hereof by Internal Revenue Service form W-8BEN
or W-8ECI, that the Lender reasonably considers to be confidential, the Lender shall give notice
thereof to the Company and shall not be obligated to include in such form or document such
confidential information.

          (f) For any period with respect to which a Lender has failed to provide the Company with the
appropriate form described in Section 2.16(e) (other than if such failure is due to
a change in law occurring subsequent to the date on which a form originally was required to be
provided, or if such form otherwise is not required under subsection (e) above), such Lender shall
not be entitled to indemnification under Section 2.16(a) or (c) with respect to Taxes imposed by
the United States by reason of such failure; provided, however, that should a
Lender become subject to Taxes because of its failure to deliver a form required hereunder,
the Borrowers shall take such steps as the Lender shall reasonably request to assist the Lender to
recover such Taxes.

          (g) Any Lender claiming any additional amounts payable pursuant to this Section 2.16 agrees to
use reasonable efforts (consistent with its internal policy and legal and regulatory restrictions)
to change the jurisdiction of its Eurodollar Lending Office if the making of such a change would
avoid the need for, or reduce the amount of, any such additional amounts that may thereafter accrue
and would not, in the reasonable judgment of such Lender, be otherwise disadvantageous to such
Lender.

          (h) Each Canadian Lender hereby certifies that it is a resident of Canada for purposes of Part
XIII of the Income Tax Act (Canada) or that payments of interest to it by Lafarge Canada are
otherwise exempt from Canadian withholding taxes. Each Person that becomes a Canadian Lender
hereafter shall promptly deliver to Lafarge Canada and the Agent a certificate as to whether such
Person is a resident of Canada for purposes of Part XIII of the Income Tax Act (Canada) or that
payments of interest to it by Lafarge Canada are otherwise exempt from Canadian withholding taxes.
If any such Canadian Lender is not a resident of Canada for purposes of Part XIII of the Income
Tax Act (Canada) or otherwise not exempt from the payment of Canadian withholding taxes on interest
payments to it, such Lender shall not be entitled to payments hereunder with respect to taxes
imposed under Part XIII of the Income Tax Act (Canada) and such interest payments will be net of
any applicable withholding taxes required to be withheld and remitted by the payor.

          Section 2.17. Sharing of Payments, Etc. If any Lender shall obtain any payment
(whether voluntary, involuntary, through the exercise of any right of set-off, or otherwise) on
account of the Committed Advances owing to it and under any Bankers’ Acceptances or Acceptance
Notes (other than pursuant to Section 2.13, 2.16 or 10.04(c)) in excess of its ratable share of
payments on account of the Committed Advances and under any Bankers’ Acceptances or Acceptance
Notes obtained by all the Lenders, such Lender shall forthwith purchase from the other Lenders such
participations in the Committed Advances owing to them and the Bankers’ Acceptances or Acceptance
Notes issued or purchased by them as shall be necessary to cause such purchasing Lender to share
the excess payment ratably with each other Lender; provided, however, that if all
or any portion of such excess payment is thereafter recovered from such purchasing Lender, such
purchase from each Lender shall be rescinded and such Lender shall repay to the purchasing Lender
the purchase price to the extent of such recovery together with an amount equal to such Lender’s
ratable share (according to the proportion of (i) the amount of such Lender’s required repayment to
(ii) the total amount so recovered from the purchasing Lender) of any interest or other amount paid
or payable by the purchasing Lender in respect of the total amount so recovered. The Borrowers
agree that any Lender so purchasing a participation from another Lender pursuant to this Section
2.17 may, to the fullest extent permitted by law, exercise all its rights of payment (including the
right of set-off) with respect to such participation as fully as if such Lender were the direct
creditor of the Borrowers in the amount of such participation.

          Section 2.18. Evidence of Debt. (a) Each Lender shall maintain in accordance with
its usual practice an account or accounts evidencing the indebtedness of the Borrowers to such
Lender resulting from each Committed Advance owing to such Lender from time to time, including the
amounts of principal and interest payable and paid to such Lender from time to time hereunder in
respect of Committed Advances. The Borrowers agree that upon notice by any Lender to the Borrowers
(with a copy of such notice to the Agent) to the effect that a Revolving Credit Note or a Canadian
Note is required or appropriate in order for such Lender to evidence (whether for purposes of
pledge, enforcement or otherwise) the Committed Advances owing to, or to be made by, such Lender,
the applicable Borrowers shall promptly execute and deliver to such Lender a Revolving Credit Note
or a

31

 

Canadian Note, as the case may be, payable to the order of such Lender in a principal amount
up to the applicable Commitment of such Lender.

          (b) The Register maintained by the Agent pursuant to Section 10.07(d) shall include a control
account, and a subsidiary account for each Lender, in which accounts (taken together) shall be
recorded (i) the date and amount of each Borrowing made hereunder, the Type of Advances comprising
such Borrowing and, if appropriate, the Interest Period applicable thereto, (ii) the terms of each
Assumption Agreement and each Assignment and Acceptance delivered to and accepted by it, (iii) the
amount of any principal or interest due and payable or to become due and payable from each Borrower to each Lender hereunder and (iv) the
amount of any sum received by the Agent from each Borrower hereunder and each Lender’s share
thereof.

          (c) Entries made in good faith by the Agent in the Register pursuant to subsection (b) above,
and by each Lender in its account or accounts pursuant to subsection (a) above, shall be
prima facie evidence of the amount of principal and interest due and payable or to
become due and payable from the Borrowers to, in the case of the Register, each Lender and, in the
case of such account or accounts, such Lender, under this Agreement, absent manifest error;
provided, however, that the failure of the Agent or such Lender to make an entry,
or any finding that an entry is incorrect, in the Register or such account or accounts shall not
limit or otherwise affect the obligations of the Borrowers under this Agreement.

          Section 2.19. Use of Proceeds. The proceeds of the Advances shall be available (and
the Borrowers agree that they shall use such proceeds) solely for general corporate purposes of the
Borrowers.

          Section 2.20. Increase in the Aggregate Revolving Credit Commitments. (a) The
Company may, at any time but in any event not more than once in any calendar year prior to the
Termination Date, by notice to the Agent, request that the aggregate amount of the Revolving Credit
Commitments be increased by an amount of $50,000,000 or an integral multiple thereof (each a
“Commitment Increase”) to be effective as of a date that is at least 90 days prior to the scheduled
Termination Date then in effect (the “Increase Date”) as specified in the related notice to the
Agent; provided, however that (i) in no event shall the aggregate amount of the
Revolving Credit Commitments at any time exceed $1,000,000,000 and (ii) on the date of any request
by the Company for a Commitment Increase and on the related Increase Date the applicable conditions
set forth in Article III shall be satisfied.

          (b) The Agent shall promptly notify the Lenders of a request by the Company for a Commitment
Increase, which notice shall include (i) the proposed amount of such requested Commitment Increase,
(ii) the proposed Increase Date and (iii) the date by which Lenders wishing to participate in the
Commitment Increase must commit to an increase in the amount of their respective Revolving Credit
Commitments (the “Commitment Date”). Each Lender that is willing to participate in such
requested Commitment Increase (each an “Increasing Lender”) shall, in its sole discretion,
give written notice to the Agent on or prior to the Commitment Date of the amount by which it is
willing to increase its Revolving Credit Commitment. If the Lenders notify the Agent that they are
willing to increase the amount of their respective Revolving Credit Commitments by an aggregate
amount that exceeds the amount of the requested Commitment Increase, the requested Commitment
Increase shall be allocated among the Lenders willing to participate therein in such amounts as are
agreed between the Company and the Agent.

          (c) Promptly following each Commitment Date, the Agent shall notify the Company as to the
amount, if any, by which the Lenders are willing to participate in the requested Commitment
Increase. If the aggregate amount by which the Lenders are willing to participate in any requested
Commitment Increase on any such Commitment Date is less than the requested Commitment Increase,
then the Company may extend offers to one or more Eligible Assignees to participate in any portion
of the requested Commitment Increase that has not been committed to by the Lenders as of the
applicable Commitment Date; provided, however, that the Revolving Credit Commitment
of each such Eligible Assignee shall be in an amount of $5,000,000 or an integral multiple of
$1,000,000 in excess thereof.

          (d) On each Increase Date, each Eligible Assignee that accepts an offer to participate in a
requested Commitment Increase in accordance with Section 2.20(b) (each such Eligible Assignee, an
“Assuming Lender”) shall become a Lender party to this Agreement as of such Increase Date
and the Revolving Credit

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Commitment of each Increasing Lender for such requested Commitment
Increase shall be so increased by the amount by which each Increasing Lender has given notice to
the Agent pursuant to Section 2.20(b) (or by the amount allocated to such Lender pursuant to the
last sentence of Section 2.20(b)) as of such Increase Date; provided, however, that
the Agent shall have received on or before such Increase Date the following, each dated such date:

     (i) (A) certified copies of resolutions of the Board of Directors of the Company or the
Executive Committee of such Board approving the Commitment Increase and the corresponding
modifications to this Agreement and (B) an opinion of counsel for the Company (which may be
in-house counsel), in substantially the form of Exhibit D hereto;

     (ii) an assumption agreement from each Assuming Lender, if any, in form and substance
satisfactory to the Company and the Agent (each an “Assumption Agreement”), duly
executed by such Assuming Lender, the Agent and the Company; and

     (iii) confirmation from each Increasing Lender of the increase in the amount of its
Revolving Credit Commitment in a writing satisfactory to the Company and the Agent.

On each Increase Date, upon fulfillment of the conditions set forth in Section 2.20(a) and in the
immediately preceding sentence of this Section 2.20(d), the Agent shall notify the Lenders
(including, without limitation, each Assuming Lender) and the Company, on or before 1:00 P.M. (New
York City time), by telecopier, of the occurrence of the Commitment Increase to be effected on such
Increase Date and shall record in the Register the relevant information with respect to each
Increasing Lender and each Assuming Lender on such date. Each Increasing Lender and each Assuming
Lender shall, before 2:00 P.M. (New York City time) on the Increase Date, make available for the
account of its Applicable Lending Office to the Agent at the Agent’s Account, in same day funds, in
the case of such Assuming Lender, an amount equal to such Assuming Lender’s ratable portion of the
Revolving Credit Borrowings then outstanding (calculated based on its Revolving Credit Commitment
as a percentage of the aggregate Revolving Credit Commitments outstanding after giving effect to
the relevant Commitment Increase) and, in the case of such Increasing Lender, an amount equal to
the excess of (i) such Increasing Lender’s ratable portion of the Revolving Credit Borrowings then
outstanding (calculated based on its Revolving Credit Commitment as a percentage of the aggregate
Revolving Credit Commitments outstanding after giving effect to the relevant Commitment Increase)
over (ii) such Increasing Lender’s ratable portion of the Revolving Credit Borrowings then
outstanding (calculated based on its Revolving Credit Commitment (without giving effect to the
relevant Commitment Increase) as a percentage of the aggregate Revolving Credit Commitments
(without giving effect to the relevant Commitment Increase). After the Agent’s receipt of such
funds from each such Increasing Lender and each such Assuming Lender, the Agent will promptly
thereafter cause to be distributed like funds to the other Revolving Credit Lenders for the account
of their respective Applicable Lending Offices in an amount to each other Revolving Credit Lender
such that the aggregate amount of the outstanding Revolving Credit Advances owing to each Lender
after giving effect to such distribution equals such Lender’s ratable portion of the Revolving
Credit Borrowings then outstanding (calculated based on its Revolving Credit Commitment as a
percentage of the aggregate Revolving Credit Commitments outstanding after giving effect to the
relevant Commitment Increase).

ARTICLE III

CONDITIONS TO EFFECTIVENESS AND LENDING

          Section 3.01. Conditions Precedent to Effectiveness of Sections 2.01 and 2.03.
Sections 2.01 and 2.03 of this Agreement shall become effective on and as of the first date (the
“Effective Date”) on which the following conditions precedent have been satisfied:

     (a) There shall have occurred no Material Adverse Change since December 31, 2004.

     (b) There shall exist no action, suit, investigation, litigation or proceeding
affecting the Company or any of its Subsidiaries pending or threatened before any court,
governmental agency or arbitrator that (i) could be reasonably likely to have a Material
Adverse Effect other than the matters described on Schedule 3.01(b) hereto (the
“Disclosed Litigation”) or (ii) purports to affect the legality, validity or
enforceability of this Agreement or any Note or the consummation of the transactions

33

 

contemplated hereby, and there shall have been no adverse change in the status, or financial
effect on the Company or any of its Subsidiaries, of the Disclosed Litigation from that
described on Schedule 3.01(b) hereto.

     (c) Nothing shall have come to the attention of the Lenders during the course of their
due diligence investigation to lead them reasonably to believe that the Information
Memorandum was or has become misleading, incorrect or incomplete in any material respect;
without limiting the generality of the foregoing, the Lenders shall have been given such
access to the management, records, books of account, contracts and properties of the Company
and its Subsidiaries as they shall have reasonably requested.

     (d) All governmental and third party consents and approvals necessary in connection
with the transactions contemplated hereby shall have been obtained (without the imposition
of any conditions that are not reasonably acceptable to the Lenders) and shall remain in
effect, and no law or regulation shall be applicable in the reasonable judgment of the
Lenders that restrains, prevents or imposes materially adverse conditions upon the
transactions contemplated hereby.

     (e) The Company shall have notified each Lender and the Agent in writing as to the
proposed Effective Date.

     (f) The Company shall have paid all accrued fees and expenses of the Agent and the
Lenders (including the accrued fees and expenses of counsel to the Agent).

     (g) On the Effective Date, the following statements shall be true and the Agent shall
have received for the account of each Lender a certificate signed by a duly authorized
officer of each Initial Borrower, dated the Effective Date, stating that:

     (i) The representations and warranties contained in Section 4.01 are correct on
and as of the Effective Date, and

     (ii) No event has occurred and is continuing that constitutes a Default.

     (h) The Agent shall have received on or before the Effective Date the following, each
dated such day, in form and substance satisfactory to the Agent and (except for the
Revolving Credit Notes) in sufficient copies for each Lender:

     (i) The Revolving Credit Notes and Canadian Notes to the order of the Lenders
to the extent requested by any Lender pursuant to Section 2.18.

     (ii) Certified copies of the resolutions of the Board of Directors of each
Initial Borrower authorizing this Agreement and the Notes, and of all documents
evidencing other necessary corporate action and governmental approvals, if any, with
respect to this Agreement and the Notes.

     (iii) A certificate of the Secretary or an Assistant Secretary of each Initial
Borrower certifying the names and true signatures of the officers of such Borrower
authorized to sign this Agreement and the Notes and the other documents to be
delivered hereunder.

     (iv) A favorable opinion of Timothy Power, Vice President and Associate General
Counsel for the Company, and an opinion of counsel of Lafarge Canada, substantially
in the form of Exhibits D-1 and D-2 hereto, respectively, and as to such other
matters as any Lender through the Agent may reasonably request.

     (v) A favorable opinion of Shearman & Sterling LLP, counsel for the Agent, in
form and substance satisfactory to the Agent.

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     (i) The Borrower shall have terminated the commitments, and paid in full all Debt,
interest, fees and other amounts outstanding, under (A) the 3-Year Credit Agreement dated as
April 16, 2004, as amended, among the Company, the borrowers and the lenders parties thereto
and Citibank, as agent, and (B) the 5-Year Credit Agreement dated as of April 18, 2002, as
amended, among the Company, the lenders parties thereto and Citibank, as agent; and each of the Lenders that is a party to
either such credit facility hereby waives, upon execution of this Agreement, any notice
required by said Credit Agreement relating to the termination of commitments thereunder.

          Section 3.02. Conditions Precedent to the Initial Borrowing of Each Designated
Subsidiary. The obligation of each Lender to make an initial Revolving Credit Advance to each
Designated Subsidiary following its designation as a Borrower hereunder pursuant to Section 10.08
on the occasion of the initial Borrowing thereby is subject to the Agent’s receipt on or before the
date of such initial Borrowing of each of the following, in form and substance satisfactory to the
Agent and dated such date:

     (a) The Designation Letter of such Designated Subsidiary, in substantially the form of
Exhibit E hereto.

     (b) A Revolving Credit Note of such Designated Subsidiary to the extent requested by
any Lender pursuant to Section 2.18.

     (c) A certificate of the Secretary or an Assistant Secretary (or person performing
similar functions) of such Designated Subsidiary certifying (A) appropriate resolutions of
the board of directors (or persons performing similar functions) of such Designated
Subsidiary approving this Agreement and its Notes, and all documents evidencing other
necessary corporate (or equivalent) action and governmental approvals, if any, with respect
to this Agreement and its Notes (copies of which shall be attached thereto), and (B) the
names and true signatures of the officers of such Designated Subsidiary authorized to sign
the Designation Letter of such Designated Subsidiary and its Notes and the other documents
to be delivered by such Designated Subsidiary hereunder.

     (d) A favorable opinion of counsel for such Designated Subsidiary reasonably acceptable
to the Agent, in substantially the form of Exhibit D hereto with modifications appropriate
to such Designated Subsidiary, and addressing such other matters as any Lender through the
Agent may reasonably request.

     (e) Such other documents, opinions and other information as any Lender, through the
Agent, may reasonably request.

          Section 3.03. Conditions Precedent to Each Committed Borrowing, Drawing and Commitment
Increase. The obligation of each Lender to make a Committed Advance on the occasion of each
Committed Borrowing or to purchase, accept or renew a Bankers’ Acceptance or Acceptance Note and
each Commitment Increase shall be subject to the conditions precedent that the Effective Date shall
have occurred and on the date of such Committed Borrowing, Drawing or such Commitment Increase (a)
the following statements shall be true (and each of the giving of the applicable Notice of
Revolving Credit Borrowing, Notice of Canadian Borrowing, Notice of Drawing, request for Commitment
Increase and the acceptance by the applicable Borrower of the proceeds of such Committed Borrowing
or Drawing shall constitute a representation and warranty by such Borrower that on the date of such
Borrowing or Drawing or such Commitment Increase such statements are true):

     (i) the representations and warranties contained in Section 4.01 (except the
representations set forth in the last sentence of subsection (e) thereof and in subsection
(f)(i) thereof) are correct on and as of such date, before and after giving effect to such
Committed Borrowing, Drawing or Commitment Increase and to the application of the proceeds
therefrom, as though made on and as of such date, and

     (ii) no event has occurred and is continuing, or would result from such Committed
Borrowing, Drawing or Commitment Increase or from the application of the proceeds therefrom,
that constitutes a Default;

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and (b) the Agent shall have received such other approvals, opinions or documents as any Lender
through the Agent may reasonably request.

          Section 3.04. Conditions Precedent to Each Competitive Bid Borrowing. The obligation
of each Lender that is to make a Competitive Bid Advance on the occasion of a Competitive Bid
Borrowing to make such Competitive Bid Advance as part of such Competitive Bid Borrowing is subject
to the conditions precedent that (i) the Agent shall have received the written confirmatory Notice
of Competitive Bid Borrowing with respect thereto, (ii) on or before the date of such Competitive
Bid Borrowing, but prior to such Competitive Bid Borrowing, the Agent shall have received a
Competitive Bid Note payable to the order of such Lender for each of the one or more Competitive
Bid Advances to be made by such Lender as part of such Competitive Bid Borrowing, in a principal
amount equal to the principal amount of the Competitive Bid Advance to be evidenced thereby and
otherwise on such terms as were agreed to for such Competitive Bid Advance in accordance with
Section 2.03, and (iii) on the date of such Competitive Bid Borrowing the following statements
shall be true (and each of the giving of the applicable Notice of Competitive Bid Borrowing and the
acceptance by the applicable Borrower of the proceeds of such Competitive Bid Borrowing shall
constitute a representation and warranty by such Borrower that on the date of such Competitive Bid
Borrowing such statements are true):

     (a) the representations and warranties contained in Section 4.01 are correct on and as
of the date of such Competitive Bid Borrowing, before and after giving effect to such
Competitive Bid Borrowing and to the application of the proceeds therefrom, as though made
on and as of such date,

     (b) no event has occurred and is continuing, or would result from such Competitive Bid
Borrowing or from the application of the proceeds therefrom, that constitutes a Default, and

     (c) no event has occurred and no circumstance exists as a result of which the
information concerning the Borrowers that has been provided to the Agent and each Lender by
the Borrowers in connection herewith would include an untrue statement of a material fact or
omit to state any material fact or any fact necessary to make the statements contained
therein, in the light of the circumstances under which they were made, not misleading.

          Section 3.05. Determinations Under Section 3.01. For purposes of determining
compliance with the conditions specified in Section 3.01, each Lender shall be deemed to have
consented to, approved or accepted or to be satisfied with each document or other matter required
thereunder to be consented to or approved by or acceptable or satisfactory to the Lenders unless an
officer of the Agent responsible for the transactions contemplated by this Agreement shall have
received notice from such Lender prior to the date that the Borrowers, by notice to the Lenders,
designate as the proposed Effective Date, specifying its objection thereto. The Agent shall
promptly notify the Lenders of the occurrence of the Effective Date.

ARTICLE IV

REPRESENTATIONS AND WARRANTIES

          Section 4.01. Representations and Warranties of the Borrowers. Each Borrower
represents and warrants as follows:

     (a) Each Loan Party is a corporation duly organized, validly existing and in good
standing under the laws of the jurisdiction of its organization.

     (b) The execution, delivery and performance by each Loan Party of this Agreement and
the Notes to be delivered by it, and the consummation of the transactions contemplated
hereby, are within such Loan Party’s corporate powers, have been duly authorized by all
necessary corporate action, and do not contravene (i) such Loan Party’s charter or by-laws (or similar organizational
documents) or (ii) law or any contractual restriction binding on or affecting such Loan
Party.

36

 

     (c) No authorization or approval or other action by, and no notice to or filing with,
any governmental authority or regulatory body or any other third party is required for the
due execution, delivery and performance by any Loan Party of this Agreement or the Notes to
be delivered by it.

     (d) This Agreement has been, and each of the Notes or guarantee supplements to be
delivered by it when delivered hereunder will have been, duly executed and delivered by such
Loan Party. This Agreement is, and each of the Notes and guarantee supplements when
delivered hereunder will be, the legal, valid and binding obligation of each Loan Party
intended to be a party thereto enforceable against such Loan Party in accordance with their
respective terms, except as enforceability may be limited by bankruptcy, insolvency or
similar laws affecting the enforcement of creditors’ rights generally and by general
equitable principles.

     (e) The Consolidated balance sheet of the Company and its Subsidiaries as at December
31, 2004, and the related Consolidated statements of income and cash flows of the Company
and its Subsidiaries for the fiscal year then ended, accompanied by an opinion of Ernst &
Young LLP, independent public accountants, and the Consolidated balance sheet of the Company
and its Subsidiaries as at June 30, 2005, and the related Consolidated statements of income
and cash flows of the Company and its Subsidiaries for the six months then ended, duly
certified by the chief financial officer of the Company, copies of which have been furnished
to each Lender, fairly present, subject, in the case of said balance sheet as at June 30,
2005, and said statements of income and cash flows for the six months then ended, to
year-end audit adjustments, the Consolidated financial condition of the Company and its
Subsidiaries as at such dates and the Consolidated results of the operations of the Company
and its Subsidiaries for the periods ended on such dates, all in accordance with generally
accepted accounting principles consistently applied. Since December 31, 2004, there has
been no Material Adverse Change.

     (f) There is no pending or threatened action, suit, investigation, litigation or
proceeding, including, without limitation, any Environmental Action, affecting the Company
or any of its Subsidiaries before any court, governmental agency or arbitrator that (i)
would be reasonably likely to have a Material Adverse Effect (other than the Disclosed
Litigation) or (ii) purports to affect the legality, validity or enforceability of this
Agreement or any Note or the consummation of the transactions contemplated hereby, and there
has been no material adverse change in the status, or financial effect on the Company or any
of its Subsidiaries, of the Disclosed Litigation from that described on Schedule 3.01(b)
hereto.

     (g) No information, exhibit or report furnished by the Company or any of its
Subsidiaries to the Agent or to any Lender in connection with the negotiation of, or
compliance with, the Loan Documents contained any material misstatement of fact or omitted
to state a material fact or any fact necessary to make the statements contained therein not
misleading.

     (h) Each Borrower and its Subsidiaries are in compliance with Regulations T, U and X.
Margin stock (as defined in Regulation U) constitutes less than 25% of the value of those
assets of the Borrowers and their Subsidiaries which are subject to any limitation on sale,
pledge, or other restriction hereunder.

     (i) Neither any Borrower nor any of its Subsidiaries is a party to any agreement or
instrument or subject to any charter or other corporate restriction which could reasonably
be expected to have a Material Adverse Effect. Neither any Borrower nor any of its
Subsidiaries is in default in the performance, observance or fulfillment of any of the
obligations, covenants or conditions contained in any agreement to which it is a party,
which default could reasonably be expected to have a Material Adverse Effect.

     (j) The Borrowers and their Subsidiaries have complied with all applicable statutes,
rules, regulations, orders and restrictions of any domestic or foreign government or any
instrumentality or agency thereof having jurisdiction over the conduct of their respective
businesses or the ownership of their respective property, except for any failure to comply with any of the foregoing which
could not reasonably be expected to have a Material Adverse Effect.

37

 

     (k) On the date of this Agreement, the Borrowers and their Subsidiaries have good
title, free of all Liens other than those permitted by Section 5.02(a) to all of the
property and assets reflected in the Company’s most recent consolidated financial statements
provided to the Agent as owned by the Borrowers and their Subsidiaries.

     (l) Each Borrower and each of its Subsidiaries owns or possesses all material patents,
trademarks, trade names, service marks, copyright, licenses and rights with respect to the
foregoing necessary for the future conduct of its business, without any known material
conflict with the rights of others.

     (m) In the ordinary course of its business, the officers of the Company consider the
effect of Environmental Laws on the business of the Borrowers, in the course of which they
identify and evaluate potential risks and liabilities accruing to the Borrowers and their
Subsidiaries due to Environmental Laws. On the basis of this consideration, the Company has
concluded that Environmental laws cannot reasonably be expected to have a Material Adverse
Effect. Except as disclosed on Schedule 3.01(b) hereto, neither any Borrower nor any of its
Subsidiaries has received any notice to the effect that its operations are not in material
compliance with any of the requirements of applicable Environmental Laws or are the subject
of any foreign or domestic, federal, state or local investigation evaluating whether any
remedial action is needed to respond to a release of any toxic or hazardous waste or
substance into the environment, which non-compliance or remedial action could reasonably be
expected to have a Material Adverse Effect.

     (n) Neither any Borrower nor any of its Subsidiaries is an “investment company” or a
company “controlled” by and “investment company” or an “affiliated person” thereof or an
“affiliated person” of such affiliated person, in each case within the meaning of the
Investment Company Act of 1940, as amended.

     (o) Neither any Borrower nor any of its Subsidiaries is a “holding company” or a
“subsidiary company” of a “holding company”, or an “affiliate” of a “holding company” or of
a “subsidiary company” of a “holding company”, within the meaning of the Public Utility
Holding Company Act of 1935, as amended.

     (p) The Borrowers have disclosed to the Lenders all agreements, instruments and
corporate or other restrictions to which it or any of their Subsidiaries is subject, and all
other matters known to it, that, individually or in the aggregate, could reasonably be
expected to result in a Material Adverse Effect. Neither the Information Memorandum nor any
of the other reports, financial statements, certificates or other information furnished by
or on behalf of the Borrowers to the Agent or any Lender in connection with the negotiation
of this Agreement or delivered hereunder (as modified or supplemented by other information
so furnished) contains any material misstatement of fact or omits to state any material fact
necessary to make the statements therein, in the light of the circumstances under which they
were made, not misleading; provided that, with respect to projected financial
information, the Borrowers represent only that such information was prepared in good faith
based upon assumptions believed to be reasonable at the time.

ARTICLE V

COVENANTS

          Section 5.01. Affirmative Covenants. So long as any Advance shall remain unpaid or
any Lender shall have any Commitment hereunder, each Borrower will:

     (a) Compliance with Laws, Etc. Comply, and cause each of its Subsidiaries to
comply, in all material respects, with all applicable laws, rules, regulations and orders,
such compliance to include, without limitation, compliance with ERISA and Environmental
Laws, which, if violated, could reasonably be expected to have a Material Adverse Effect.

38

 

     (b) Payment of Taxes, Etc. Pay and discharge, and cause each of its
Subsidiaries to pay and discharge, before the same shall become delinquent, (i) all taxes,
assessments and governmental charges or levies imposed upon it or upon its property and (ii)
all lawful claims that, if unpaid, might by law become a Lien upon its property;
provided, however, that neither such Borrower nor any of its Subsidiaries
shall be required to pay or discharge any such tax, assessment, charge or claim that is
being contested in good faith and by proper proceedings and as to which appropriate reserves
are being maintained, unless and until any Lien resulting therefrom attaches to its property
and becomes enforceable against its other creditors.

     (c) Maintenance of Insurance. Maintain, and cause each of its Subsidiaries to
maintain, insurance with responsible and reputable insurance companies or associations in
such amounts and covering such risks as is usually carried by companies engaged in similar
businesses and owning similar properties in the same general areas in which such Borrower or
such Subsidiary operates.

     (d) Preservation of Corporate Existence, Etc. Preserve and maintain, and cause
each of its Subsidiaries to preserve and maintain, its corporate existence, rights (charter
and statutory) and franchises; provided, however, that such Borrower and its
Subsidiaries may consummate any merger or consolidation permitted under Section 5.02(b) and
provided further that neither such Borrower nor any of its Subsidiaries
shall be required to preserve any right or franchise if the Board of Directors of such
Borrower or such Subsidiary shall determine that the preservation thereof is no longer
desirable in the conduct of the business of such Borrower or such Subsidiary, as the case
may be, and that the loss thereof is not disadvantageous in any material respect to such
Borrower, such Subsidiary or the Lenders.

     (e) Visitation Rights. At any reasonable time and from time to time, permit
the Agent or any of the Lenders or any agents or representatives thereof, to examine and
make copies of and abstracts from the records and books of account of, and visit the
properties of, such Borrower and any of its Subsidiaries, and to discuss the affairs,
finances and accounts of such Borrower and any of its Subsidiaries with any of their
officers or directors and with their independent certified public accountants.

     (f) Keeping of Books. Keep, and cause each of its Subsidiaries to keep, proper
books of record and account, in which full and correct entries shall be made of all
financial transactions and the assets and business of such Borrower and each such Subsidiary
in accordance with generally accepted accounting principles in effect from time to time.

     (g) Maintenance of Properties, Etc. Maintain and preserve, and cause each of
its Subsidiaries to maintain and preserve, all of its properties that are used or useful in
the conduct of its business in good working order and condition, ordinary wear and tear
excepted.

     (h) Transactions with Affiliates. Conduct, and cause each of its Subsidiaries
to conduct, all transactions otherwise permitted under this Agreement with any of their
Affiliates on terms that are fair and reasonable and no less favorable to such Borrower or
such Subsidiary than it would obtain in a comparable arm’s-length transaction with a Person
not an Affiliate.

     (i) Conduct of Business. Carry on and conduct its business, and cause each of
its Subsidiaries to carry on and conduct its business, in substantially the same manner and
in substantially the same fields of enterprise as it is presently conducted or lines of
business reasonably related thereto.

     (j) Reporting Requirements. The Company shall furnish to the Lenders:

     (i) (A) as soon as available and in any event within 45 days after the end of
each of the first three quarters of each fiscal year of the Company, the
Consolidated balance sheet of the Company and its Subsidiaries as of the end of such quarter and Consolidated
statements of income and cash flows of the Company and its Subsidiaries for the
period commencing at the end of the previous fiscal year and ending with the end of
such quarter, duly certified (subject to year-end audit adjustments) by the chief
financial officer of the Company as having been prepared in accordance with
generally accepted accounting principles and certificates of the chief financial

39

 

officer of the Company as to compliance with the terms of this Agreement and setting
forth in reasonable detail the calculations necessary to demonstrate compliance with
Section 5.03, provided that in the event of any change in GAAP used in the
preparation of such financial statements, the Company shall also provide, if
necessary for the determination of compliance with Section 5.03, a statement of
reconciliation conforming such financial statements to GAAP; and

     (B) as soon as available and in any event within 45 days after the end of each
of the first three quarters of each fiscal year of Lafarge Canada, the Consolidated
balance sheet of Lafarge Canada and its Subsidiaries as of the end of such quarter
and Consolidated statements of income and cash flows of Lafarge Canada and its
Subsidiaries for the period commencing at the end of the previous fiscal year and
ending with the end of such quarter, duly certified (subject to year-end audit
adjustments) by the chief financial officer of Lafarge Canada as having been
prepared in accordance with generally accepted accounting principles and
certificates of the chief financial officer of Lafarge Canada as to compliance with
the terms of this Agreement;

     (ii) (A) as soon as available and in any event within 90 days after the end of
each fiscal year of the Company, a copy of the annual audit report for such year for
the Company and its Subsidiaries, containing the Consolidated balance sheet of the
Company and its Subsidiaries as of the end of such fiscal year and Consolidated
statements of income and cash flows of the Company and its Subsidiaries for such
fiscal year, in each case accompanied by an opinion acceptable to the Required
Lenders by Ernst & Young LLP or other independent public accountants acceptable to
the Required Lenders, provided that in the event of any change in GAAP used
in the preparation of such financial statements, the Company shall also provide, if
necessary for the determination of compliance with Section 5.03, a statement of
reconciliation conforming such financial statements to GAAP; and

     (B) as soon as available and in any event within 90 days after the end of each
fiscal year of Lafarge Canada, a copy of the annual audit report for such year for
Lafarge Canada and its Subsidiaries, containing the Consolidated balance sheet of
Lafarge Canada and its Subsidiaries as of the end of such fiscal year and
Consolidated statements of income and cash flows of Lafarge Canada and its
Subsidiaries for such fiscal year, in each case accompanied by an opinion acceptable
to the Required Lenders by Ernst & Young LLP or other independent public accountants
acceptable to the Required Lenders;

     (iii) as soon as possible and in any event within five days after the
occurrence of each Default continuing on the date of such statement, a statement of
the chief financial officer of the Company setting forth details of such Default and
the action that the Borrowers have taken and propose to take with respect thereto;

     (iv) promptly after the sending or filing thereof, copies of all reports that
any Borrower sends to any of its securityholders, and copies of all reports and
registration statements that any Borrower or any Subsidiary files with the
Securities and Exchange Commission or any national securities exchange;

     (v) promptly after the commencement thereof, notice of all actions and
proceedings before any court, governmental agency or arbitrator affecting the
Company or any of its Subsidiaries of the type described in Section 4.01(f);

     (vi) not later than August 31 of each year, notice of all Significant
Subsidiaries of the Company determined by reference to the Company’s financial
position as of December 31 of the immediately preceding calendar year; and

     (vii) not later than August 31 of each year, notice of all Significant
Subsidiaries of Lafarge Canada determined by reference to Lafarge Canada’s financial
position as of December 31 of the immediately preceding calendar year; and

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     (viii) such other information respecting the Company or any of its Subsidiaries
as any Lender through the Agent may from time to time reasonably request.

Reports and financial statements required to be delivered by Company pursuant to clauses
(i), (ii) and (iv) of this subsection (j) shall be deemed to have been delivered on the date
on which the Company posts such reports, or reports containing such financial statements, on
its website on the Internet at www.lafarge-na.com, at www.sec.gov or at such other website
identified by the Company in a notice to the Agent and the Lenders and that is accessible by
the Lenders without charge; provided that the Company shall deliver paper copies of
such information to any Lender promptly upon request of such Lender through the Agent and
provided further that the Lenders shall be deemed to have received the
information specified in clauses (i), (ii) and (iv) of this subsection (j) on the date (x)
such information is posted at the website of the Agent identified from time to time by the
Agent to the Lenders and the Company and (y) such posting is notified to the Lenders (it
being understood that the Company shall have satisfied the timing obligations imposed by
those clauses as of the date such information is delivered to the Agent).

     (k) Additional Borrowers. Not later than 30 days after the delivery of the
notice required to be delivered pursuant to Section 5.01(j)(vi), designate each Significant
Subsidiary of the Company that is organized under the laws of a jurisdiction in the United
States and is not prior to such date a Borrower under this Agreement to become a Designated
Subsidiary in accordance with Section 10.08; provided that Sierra Bay Receivables,
Inc., a Nevada corporation, shall not be required to become a Borrower under this Agreement.

     (l) Additional Canadian Guarantors. Not later than 30 days after the delivery
of the notice required to be delivered pursuant to Section 5.01(j)(vii), designate each
Significant Subsidiary of the Company that is organized under the laws of a jurisdiction in
Canada and is not prior to such date a Canadian Guarantor under this Agreement (other than
LCI-Warren Merger Inc.) to duly execute and deliver to the Agent a Guaranty Supplement in
substantially the form of Exhibit F hereto, and deliver to the Agent: (i) a certificate of
the Secretary or an Assistant Secretary (or person performing similar functions) of such
Subsidiary certifying (A) appropriate resolutions of the board of directors (or persons
performing similar functions) of such Subsidiary approving this Agreement, and all documents
evidencing other necessary corporate (or equivalent) action and governmental approvals, if
any, with respect to this Agreement (copies of which shall be attached thereto), and (B) the
names and true signatures of the officers of such Subsidiary authorized to sign the Guaranty
Supplement of such Subsidiary and the other documents to be delivered by such Subsidiary
hereunder and (ii) a favorable opinion of counsel for such Subsidiary reasonably acceptable
to the Agent, in substantially the form of Exhibit D hereto with modifications appropriate
to such Subsidiary, and addressing such other matters as any Lender through the Agent may
reasonably request.

          Section 5.02. Negative Covenants. So long as any Advance shall remain unpaid or any
Lender shall have any Commitment hereunder, no Borrower will:

     (a) Liens, Etc. Create or suffer to exist, or permit any of its Subsidiaries
to create or suffer to exist, any Lien on or with respect to any of its properties, whether
now owned or hereafter acquired, or assign, or permit any of its Subsidiaries to assign, any
right to receive income, other than:

     (i) Permitted Liens,

     (ii) purchase money Liens upon or in any assets acquired or held by such
Borrower or any Subsidiary in the ordinary course of business to secure the purchase
price of such assets or to secure Debt incurred solely for the purpose of financing the acquisition of
such assets, or Liens existing on such assets at the time of its acquisition (other
than any such Liens created in contemplation of such acquisition that were not
incurred to finance the acquisition of such assets) or extensions, renewals or
replacements of any of the foregoing for the same or a lesser amount,
provided, however, that no such Lien shall extend to or cover any
assets of any character other than the assets being acquired, and no such extension,
renewal or replacement shall extend to or cover any assets not theretofore subject
to the Lien being extended, renewed or replaced,

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     (iii) the Liens existing on the Effective Date and described on Schedule
5.02(a) hereto,

     (iv) Liens on property of a Person existing at the time such Person is merged
into or consolidated with such Borrower or any Subsidiary of such Borrower or
becomes a Subsidiary of such Borrower; provided that such Liens were not
created in contemplation of such merger, consolidation or acquisition and do not
extend to any assets other than those of the Person so merged into or consolidated
with such Borrower or such Subsidiary or acquired by such Borrower or such
Subsidiary,

     (v) (v) Liens on cash and cash equivalents securing obligations under Hedge
Agreements, provided that the aggregate amount of cash and cash equivalents
subject to such Liens shall not exceed $5,000,000 at any time outstanding,

     (vi) without duplication of clause (ii) above, Liens, if any, arising in
connection with receivables securitization programs, in any aggregate principal
amount not to exceed $300,000,000 at any time outstanding (for purposes of this
clause (vi), the “principal amount” of a receivables securitization program shall
mean the amounts invested by investors that are not Affiliates of the Company in
connection with a receivables securitization program and paid to the Company or any
of its Subsidiaries, as reduced by the aggregate amounts received by such investors
from the payment of receivables and applied to reduce such invested amounts),

     (vii) other Liens securing Debt in an aggregate principal amount not to exceed
$50,000,000 at any time outstanding, and

     (viii) the replacement, extension or renewal of any Lien permitted by clause
(ii), (iii) or (iv) above upon or in the same property theretofore subject thereto
or the replacement, extension or renewal (without increase in the amount or change
in any direct or contingent obligor) of the Debt secured thereby.

     (b) Mergers, Etc. Merge or consolidate with or into, or convey, transfer,
lease or otherwise dispose of (whether in one transaction or in a series of transactions)
all or substantially all of its assets (whether now owned or hereafter acquired) to, any
Person, or permit any of its Subsidiaries to do so, except that (i) any Subsidiary of the
Company may merge or consolidate with or into, or dispose of assets to, any other Subsidiary
of the Company, (ii) any Subsidiary of the Company may merge into or dispose of assets to
the Company and (iii) any Subsidiary of the Company may merge into any other Person so long
as such the surviving Person is a Subsidiary of the Company, provided, in each case,
that no Default shall have occurred and be continuing at the time of such proposed
transaction or would result therefrom.

     (c) Subsidiary Debt. The Company shall not permit any of its Subsidiaries to
incur or at any time be liable with respect to any Debt or to issue or have outstanding any
preferred stock, except:

     (i) Debt under this Agreement or any Notes;

     (ii) Debt or preferred stock outstanding on the date hereof,

     (iii) Debt or preferred stock of a Subsidiary issued to and held by the Company
or a wholly-owned Subsidiary of the Company,

     (iv) Debt or preferred stock of any corporation existing at the time such
corporation becomes a Subsidiary of the Company and not created in contemplation of
such event,

     (v) Invested Amounts not to exceed $250,000,000 at any time outstanding,

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     (vi) refinancing, extension, renewal or refunding of any Debt or preferred
stock permitted by the foregoing clauses (ii) though (iv), and

     (vii) other Debt or preferred stock in an aggregate principal amount not to
exceed $250,000,000 at any time outstanding.

    (d) Hedge Agreements. Enter into, or permit any of its Subsidiaries to enter
into, any Hedge Agreements other than Hedge Agreements pursuant to which such Borrower or
any Subsidiary has hedged its reasonably estimated interest rate, foreign currency or
commodity exposure.

          Section 5.03. Financial Covenants. So long as any Advance shall remain unpaid or any
Lender shall have any Commitment hereunder, the Company will:

    (a) Leverage Ratio. Maintain a ratio of Consolidated Debt to Consolidated Debt
plus shareholders’ equity of not greater than 0.50 : 1.00:

    (b) Fixed Charge Coverage Ratio. Maintain, as of the last day of each fiscal
quarter, a ratio of Consolidated EBITDA of the Company and its Subsidiaries for the period
of four fiscal quarters then ended to interest payable on, and amortization of debt discount
in respect of, all Debt during such period by the Company and its Subsidiaries of not less
than 3.0 : 1.0.

ARTICLE VI

EVENTS OF DEFAULT

          Section 6.01. Events of Default. If any of the following events (“Events of Default”)
shall occur and be continuing:

    (a) Any Borrower shall fail to pay any principal of any Advance or any portion of any
Bankers’ Acceptance or Acceptance Note when the same becomes due and payable; or any
Borrower shall fail to pay any interest on any Advance or make any other payment of fees or
other amounts payable under this Agreement or any Note within three Business Days after the
same becomes due and payable; or

    (b) Any representation or warranty made by any Borrower herein or by any Borrower (or
any of its officers) in connection with this Agreement shall prove to have been incorrect in
any material respect when made; or

    (c) (i) Any Borrower shall fail to perform or observe any term, covenant or agreement
contained in Section 5.01(d), (e), (h) or (j), 5.02 or 5.03 on its part to be performed or
observed, or (ii) any Borrower shall fail to perform or observe any other term, covenant or
agreement contained in this Agreement on its part to be performed or observed if such
failure shall remain unremedied for 30 days after written notice thereof shall have been
given to such Borrower by the Agent or any Lender; or

    (d) Any Borrower or any of its Subsidiaries shall fail to pay any principal of or
premium or interest on any Debt that is outstanding in a principal or notional amount of at
least $15,000,000 in the aggregate (but excluding Debt outstanding hereunder) of such
Borrower or such Subsidiary (as the case may be), when the same becomes due and payable
(whether by scheduled maturity, required prepayment, acceleration, demand or otherwise), and
such failure shall continue after the applicable grace period, if any, specified in the
agreement or instrument relating to such Debt; or any other event shall occur or condition
shall exist under any agreement or instrument relating to any such Debt and shall continue
after the applicable grace period, if any, specified in such agreement or instrument, if the
effect of such event or condition is to accelerate, or to permit the acceleration of, the
maturity of such Debt; or any such Debt shall be declared to be due and payable, or required
to be prepaid or redeemed (other than by a regularly scheduled required prepayment or
redemption), purchased or defeased, or an offer to prepay, redeem,

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purchase or defease such
Debt shall be required to be made, in each case prior to the stated maturity thereof; or

    (e) The Company or any of its Significant Subsidiaries shall generally not pay its
debts as such debts become due, or shall admit in writing its inability to pay its debts
generally, or shall make a general assignment for the benefit of creditors; or any
proceeding shall be instituted by or against the Company or any of its Significant
Subsidiaries seeking to adjudicate it a bankrupt or insolvent, or seeking liquidation,
winding up, reorganization, arrangement, adjustment, protection, relief, or composition of
it or its debts under any law relating to bankruptcy, insolvency or reorganization or relief
of debtors, or seeking the entry of an order for relief or the appointment of a receiver,
trustee, custodian or other similar official for it or for any substantial part of its
property and, in the case of any such proceeding instituted against it (but not instituted
by it), either such proceeding shall remain undismissed or unstayed for a period of 60 days,
or any of the actions sought in such proceeding (including, without limitation, the entry of
an order for relief against, or the appointment of a receiver, trustee, custodian or other
similar official for, it or for any substantial part of its property) shall occur; or the
Company or any of its Significant Subsidiaries shall take any corporate action to authorize
any of the actions set forth above in this subsection (e); or

    (f) Judgments or orders for the payment of money in excess of $15,000,000 in the
aggregate shall be rendered against any Borrower or any of its Subsidiaries and either (i)
enforcement proceedings shall have been commenced by any creditor upon such judgment or
order or (ii) there shall be any period of 30 consecutive days during which a stay of
enforcement of such judgment or order, by reason of a pending appeal or otherwise, shall not
be in effect; or

    (g) Lafarge S.A. shall own directly or indirectly 50% or less of the outstanding shares
of Voting Stock of the Company ; or the Company shall own directly or indirectly 50% or less
of the outstanding shares of Voting Stock of any Borrower; or

    (h) The Company or any of its ERISA Affiliates shall incur, or shall be reasonably
likely to incur liability as a result of one or more of the following that, individually or
in the aggregate, could reasonably be likely to have a Material Adverse Effect: (i) the
occurrence of any ERISA Event; (ii) the partial or complete withdrawal of the Company or any
of its ERISA Affiliates from a Multiemployer Plan; or (iii) the reorganization or
termination of a Multiemployer Plan;

then, and in any such event, the Agent (i) shall at the request, or may with the consent, of the
Required Lenders, by notice to the Borrowers, declare the obligation of each Lender to make
Advances or to accept and/or purchase Bankers’ Acceptances or Acceptance Notes to be terminated,
whereupon the same shall forthwith terminate, and (ii) shall at the request, or may with the
consent, of the Required Lenders, by notice to the Borrowers, declare the Advances, all interest
thereon and all other amounts payable under this Agreement to be forthwith due and payable,
whereupon the Advances, all such interest and all such amounts shall become and be forthwith due
and payable, without presentment, demand, protest or further notice of any kind, all of which are
hereby expressly waived by each Borrower; provided, however, that in the event of
an actual or deemed entry of an order for relief with respect to any Borrower under the Federal
Bankruptcy Code, (A) the obligation of each Lender to make Advances shall automatically be
terminated and (B) the Advances, all such interest and all such amounts shall automatically become
and be due and payable, without presentment, demand, protest or any notice of any kind, all of
which are hereby expressly waived by each Borrower.

          Section 6.02. Actions in Respect of Bankers’ Acceptances and Acceptance Notes upon
Default. If any Event of Default shall have occurred and be continuing, the Agent shall at the
request, or may with the consent, of the Required Lenders, irrespective of whether it is taking any
of the actions described in Section 6.01 or otherwise make demand upon Lafarge Canada to, and
forthwith upon such demand, Lafarge Canada will, pay to the Agent on behalf of the Lenders in same
day funds at the Agent’s office designated in such demand, for deposit in the Cash Collateral
Account, an amount equal to the aggregate Face Amount of all Bankers’ Acceptances and Acceptance
Notes then outstanding; provided, however, that in the event of an actual or deemed
entry of an order for relief with respect to Lafarge Canada under any bankruptcy laws, Lafarge
Canada shall immediately pay to the Agent on behalf of the Canadian Lenders for deposit in the Cash
Collateral Account, an amount equal to the aggregate Face Amount of all Bankers’ Acceptances and
Acceptance Notes then outstanding, without presentment,

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demand, protest or notice of any kind, all
of which are hereby expressly waived by Lafarge Canada. If at any time the Agent determines that
any funds held in such Cash Collateral Account are subject to any right or claim of any Person
other than the Agent and the Lenders that the total amount of such funds is less than the aggregate
face amount of all outstanding Bankers’ Acceptances and Acceptance Notes, Lafarge Canada agrees to,
forthwith upon demand by the Agent, pay to the Agent, as additional funds to be deposited and held
in the Cash Collateral Account, an amount equal to the excess of (i) such aggregate face amount of
all outstanding Bankers’ Acceptances and Acceptance Notes over (ii) the total amount of funds, if
any, then held in the Cash Collateral Account that the Agent determines to be free and clear of any
such right and claim.

ARTICLE VII

JOINT AND SEVERAL OBLIGATIONS

          Section 7.01. Obligations Joint and Several. (a) Each US Borrower hereby absolutely,
unconditionally and irrevocably agrees that all obligations of any US Borrower hereunder, now or
hereafter existing under or in respect of this Agreement and the Notes (including, without
limitation, any extensions, modifications, substitutions, amendments or renewals of any or all of
the foregoing obligations), whether direct or indirect, absolute or contingent, and whether for
principal, interest, premiums, fees, indemnities, contract causes of action, costs, expenses or
otherwise (all such obligations, the “Obligations”), shall be joint and several obligations
of all the US Borrowers, and agrees to pay any and all expenses (including, without limitation,
fees and expenses of counsel) incurred by the Agent or any Lender in enforcing any rights under
this Agreement or any Note. Without limiting the generality of the foregoing, each US Borrower’s
liability shall extend to all amounts that constitute part of the Obligations and would be owed by
any other US Borrower to the Agent or any Lender under or in respect of this Agreement or the Notes
but for the fact that they are unenforceable or not allowable due to the existence of a bankruptcy,
reorganization or similar proceeding involving such other US Borrower.

          (b) Each US Borrower, and by its acceptance of this Agreement, the Agent and each Lender,
hereby confirms that it is the intention of all such Persons that this Article VII and the
Obligations of each US Borrower hereunder not constitute a fraudulent transfer or conveyance for
purposes of Bankruptcy Law, the Uniform Fraudulent Conveyance Act, the Uniform Fraudulent Transfer
Act or any similar foreign, federal or state law to the extent applicable to this Article VII and
the Obligations of each US Borrower hereunder. To effectuate the foregoing intention, the Agent,
the Lenders and the US Borrowers hereby irrevocably agree that the Obligations of each US Borrower
under this Article VII at any time shall be limited to the maximum amount as will result in the
Obligations of such US Borrower under this Article VII not constituting a fraudulent transfer or
conveyance.

          (c) Each US Borrower hereby unconditionally and irrevocably agrees that in the event any
payment shall be required to be made to any Lender under this Agreement or any Note, such US
Borrower will contribute, to the maximum extent permitted by law, such amounts to each other US
Borrower so as to maximize the aggregate amount paid to the Lenders under or in respect of this
Agreement and the Notes.

          Section 7.02. Joint and Several Nature of Obligations Absolute. Each US Borrower agrees that this Article VII will be observed strictly in accordance with
its terms, regardless of any law, regulation or order now or hereafter in effect in any
jurisdiction affecting any of the terms of this Article VII or the rights of any Lender with
respect thereto. The Obligations of each US Borrower under or in respect of this Agreement are
independent of the Obligations of any other US Borrower under or in respect of this Agreement or
the Notes, and a separate action or actions may be brought and prosecuted against each US Borrower
to enforce this Agreement, irrespective of whether any action is brought against any other US
Borrower or whether any other US Borrower is joined in any such action or actions. The liability
of each US Borrower under this Article VII shall be irrevocable, absolute and unconditional
irrespective of, and each US Borrower hereby irrevocably waives, to the fullest extent permitted by
law, any defenses it may now have or hereafter acquire in any way relating to, any or all of the
following:

          (a) any lack of validity or enforceability of this Agreement or any Note or any agreement or
instrument relating thereto;

          (b) any change in the time, manner or place of payment of, or in any other term of, all or any
of the Obligations or any other obligations of any US Borrower under or in respect of this
Agreement or the Notes,

45

 

or any other amendment or waiver of or any consent to departure from this
Agreement or any Note, including, without limitation, any increase in the Obligations resulting
from the extension of additional credit to any US Borrower or any of its Subsidiaries or otherwise;

          (c) any change, restructuring or termination of the corporate structure or existence of any US
Borrower or any of its Subsidiaries;

          (d) any failure of any Lender to disclose to any US Borrower any information relating to the
business, condition (financial or otherwise), operations, performance, properties or prospects of
any other US Borrower now or hereafter known to such Lender (each US Borrower waiving any duty on
the part of the Lenders to disclose such information);

          (e) the failure of any other Person to execute or deliver this Agreement, any Credit Agreement
Supplement (as hereinafter defined) or any other guaranty or agreement or the release or reduction
of liability of any US Borrower with respect to the Obligations; or

          (f) any other circumstance (including, without limitation, any statute of limitations) or any
existence of or reliance on any representation by any Lender that might otherwise constitute a
defense available to, or a discharge of, any US Borrower.

This Article VII shall continue to be effective or be reinstated, as the case may be, if at any
time any payment of any of the Obligations is rescinded or must otherwise be returned by any Lender
or any other Person upon the insolvency, bankruptcy or reorganization of any US Borrower or
otherwise, all as though such payment had not been made.

          Section 7.03. Waivers and Acknowledgments. (a) Each US Borrower hereby
unconditionally and irrevocably waives promptness, diligence, notice of acceptance, presentment,
demand for performance, notice of nonperformance, default, acceleration, protest or dishonor and
any other notice with respect to any of the Obligations and this Article VII and any requirement
that any Lender exhaust any right or take any action against any other US Borrower or any other
Person.

          (b) Each US Borrower hereby unconditionally and irrevocably waives any right to revoke this
Article VII and acknowledges that this Article VII is continuing in nature and applies to all
Obligations, whether existing now or in the future.

          (c) Each US Borrower hereby unconditionally and irrevocably waives (i) any defense arising by
reason of any claim or defense based upon an election of remedies by any Lender that in any manner
impairs, reduces, releases or otherwise adversely affects the subrogation, reimbursement,
exoneration, contribution or indemnification rights of such US Borrower or other rights of such US Borrower to proceed
against any of the other US Borrowers or any other Person and (ii) any defense based on any right
of set-off or counterclaim against or in respect of the Obligations of such US Borrower hereunder.

          (d) Each US Borrower hereby unconditionally and irrevocably waives any duty on the part of any
Lender to disclose to such US Borrower any matter, fact or thing relating to the business,
condition (financial or otherwise), operations, performance, properties or prospects of any other
US Borrower now or hereafter known by such Lender.

          (e) Each US Borrower acknowledges that it will receive substantial direct and indirect
benefits from the financing arrangements contemplated by this Agreement and the Notes and that the
waivers set forth in this Article VII are knowingly made in contemplation of such benefits. Each
US Borrower further acknowledges that it has, independently and without reliance upon any Lender
and based on such documents and information as it has deemed appropriate, made its own credit
analysis and decision to enter into this Agreement, including the provisions of this Article VII,
and the Notes to which it is or is to be a party, and such US Borrower has established adequate
means of obtaining from each other US Borrower on a continuing basis information

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pertaining to, and
is now and on a continuing basis will be completely familiar with, the business, condition
(financial or otherwise), operations, performance, properties and prospects of such other US
Borrower.

          Section 7.04. Subrogation. Each US Borrower hereby unconditionally and irrevocably
agrees not to exercise any rights that it may now have or hereafter acquire against any other US
Borrower that arise from the existence, payment, performance or enforcement of such US Borrower’s
Obligations under or in respect of this Agreement or the Notes, including, without limitation, any
right of subrogation, reimbursement, exoneration, contribution or indemnification and any right to
participate in any claim or remedy of any Lender against any other US Borrower, whether or not such
claim, remedy or right arises in equity or under contract, statute or common law, including,
without limitation, the right to take or receive from any other US Borrower, directly or
indirectly, in cash or other property or by set-off or in any other manner, payment or security on
account of such claim, remedy or right, unless and until all of the Obligations and all other
amounts payable under this Agreement and the Notes shall have been paid in full and the Commitments
shall have expired or been terminated. If any amount shall be paid to any US Borrower in violation
of the immediately preceding sentence at any time prior to the later of (a) the payment in full in
cash of all the Obligations and all other amounts payable under this Agreement and the Notes and
(b) the Termination Date, such amount shall be received and held in trust for the benefit of the
Lenders, shall be segregated from other property and funds of such US Borrower and shall forthwith
be paid or delivered to the Agent in the same form as so received (with any necessary endorsement
or assignment) to be credited and applied to the Obligations and all other amounts payable under
this Agreement and the Notes, whether matured or unmatured, in accordance with the terms of this
Agreement. If (i) any US Borrower shall make payment to any Lender of all or any part of the
Obligations, (ii) all of the Obligations and all other amounts payable under this Agreement and the
Notes shall have been paid in full in cash and (iii) the Termination Date shall have occurred, the
Lenders will, at such US Borrower’s request and expense, execute and deliver to such US Borrower
appropriate documents, without recourse and without representation or warranty, necessary to
evidence the transfer by subrogation to such US Borrower of an interest in the Obligations
resulting from such payment made by such US Borrower pursuant to this Agreement.

          Section 7.05. Continuing Obligations. Without prejudice to the survival of any of the
other agreements of any US Borrower under this Agreement or any Note, the agreements and
obligations of each US Borrower contained in Section 7.01 (with respect to enforcement expenses),
the last sentence of Section 7.02 and this Section 7.05 shall survive the payment in full of the
Obligations and all of the other amounts payable under this Agreement and the Notes.

          Section 7.06. Non-applicability to Lafarge Canada. For the avoidance of doubt, this
Article VII applies only to the US Borrowers, and Lafarge Canada shall have no liability with
respect to any obligations of any US Borrower under this Agreement.

ARTICLE VIII

GUARANTY

          Section 8.01. Guaranty; Limitation of Liability. (a) Each Canadian Guarantor hereby
absolutely, unconditionally and irrevocably, jointly and severally, guarantees the punctual payment
when due, whether at scheduled maturity or on any date of a required prepayment or by acceleration,
demand or otherwise, of all obligations of Lafarge Canada now or hereafter existing under or in
respect of this Agreement and the Notes (including, without limitation, any extensions,
modifications, substitutions, amendments or renewals of any or all of the foregoing obligations),
whether direct or indirect, absolute or contingent, and whether for principal, interest, premiums,
fees, indemnities, contract causes of action, costs, expenses or otherwise (such obligations being
the “Guaranteed Obligations”), and agrees to pay any and all expenses (including, without
limitation, fees and expenses of counsel) incurred by the Agent or any Lender in enforcing any
rights under this Guaranty. Without limiting the generality of the foregoing, each Canadian
Guarantor’s liability shall extend to all amounts that constitute part of the Guaranteed
Obligations and would be owed by Lafarge Canada to the Agent or any Lender under or in respect of
this Agreement and the Notes but for the fact that they are unenforceable or not allowable due to
the existence of a bankruptcy, reorganization or similar proceeding involving Lafarge Canada. Each
Canadian Guarantor further agrees that its guarantee hereunder constitutes a guarantee of payment
when due and not of collection.

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          (b) Each Canadian Guarantor, and by its acceptance of this Guaranty, the Agent and each
Lender, hereby confirms that it is the intention of all such Persons that this Guaranty and the
obligations of each Canadian Guarantor hereunder not constitute a fraudulent transfer or conveyance
for purposes of Bankruptcy Law, the Uniform Fraudulent Conveyance Act, the Uniform Fraudulent
Transfer Act or any similar foreign, federal or state law to the extent applicable to this Guaranty
and the obligations of each Canadian Guarantor hereunder. To effectuate the foregoing intention,
the Agent, the Lenders and the Guarantors hereby irrevocably agree that the obligations of each
Canadian Guarantor under this Guaranty at any time shall be limited to the maximum amount as will
result in the obligations of such Canadian Guarantor under this Guaranty not constituting a
fraudulent transfer or conveyance.

          (c) Each Canadian Guarantor hereby unconditionally and irrevocably agrees that in the event
any payment shall be required to be made to the Agent or any Lender under this Guaranty or any
other guaranty, such Canadian Guarantor will contribute, to the maximum extent permitted by law,
such amounts to each other Canadian Guarantor and each other guarantor so as to maximize the
aggregate amount paid to the Agent and the Lenders under or in respect of this Agreement.

          Section 8.02. Guaranty Absolute. Each Canadian Guarantor guarantees that the
Guaranteed Obligations will be paid strictly in accordance with the terms of this Agreement and the
Notes, regardless of any law, regulation or order now or hereafter in effect in any jurisdiction
affecting any of such terms or the rights of the Agent or any Lender with respect thereto. The
obligations of the Canadian Guarantors under or in respect of this Guaranty are independent of the
Guaranteed Obligations or any other obligations of Lafarge Canada under or in respect of this
Agreement and the Notes, and a separate action or actions may be brought and prosecuted against the
Canadian Guarantors to enforce this Guaranty, irrespective of whether any action is brought against
Lafarge Canada or whether Lafarge Canada is joined in any such action or actions. The liability of
the Canadian Guarantors under this Guaranty shall be irrevocable, absolute and unconditional
irrespective of, and each Canadian Guarantor hereby irrevocably waives, to the fullest extent
permitted by law, any defenses it may now have or hereafter acquire in any way relating to, any or
all of the following:

          (a) any lack of validity or enforceability of this Agreement, the Notes or any agreement or
instrument relating thereto;

          (b) any change in the time, manner or place of payment of, or in any other term of, all or any
of the Guaranteed Obligations or any other obligations of Lafarge Canada under or in respect of
this Agreement and the Notes, or any other amendment or waiver of or any consent to departure from this Agreement
or the Notes, including, without limitation, any increase in the Guaranteed Obligations resulting
from the extension of additional credit to Lafarge Canada or any of its Subsidiaries or otherwise;

          (c) any taking, exchange, release or non-perfection of any collateral, or any taking, release
or amendment or waiver of, or consent to departure from, any other guaranty, for all or any of the
Guaranteed Obligations;

          (d) any manner of application of any collateral, or proceeds thereof, to all or any of the
Guaranteed Obligations, or any manner of sale or other disposition of any collateral for all or any
of the Guaranteed Obligations or any other obligations of Lafarge Canada under this Agreement or
any Notes or any other assets of Lafarge Canada or any of its Subsidiaries;

          (e) any change, restructuring or termination of the corporate structure or existence of
Lafarge Canada or any of its Subsidiaries;

          (f) any failure of the Agent or any Lender to disclose to any Canadian Guarantor any
information relating to the business, condition (financial or otherwise), operations, performance,
properties or prospects of Lafarge Canada now or hereafter known to the Agent or such Lender (each
Canadian Guarantor waiving any duty on the part of the Agent and the Lenders to disclose such
information);

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          (g) the failure of any other Person to execute or deliver this Guaranty or any other guaranty
or agreement or the release or reduction of liability of any other guarantor or surety with respect
to the Guaranteed Obligations; or

          (h) any other circumstance (including, without limitation, any statute of limitations) or any
existence of or reliance on any representation by the Agent or any Lender that might otherwise
constitute a defense available to, or a discharge of, Lafarge Canada or any other guarantor or
surety.

This Guaranty shall continue to be effective or be reinstated, as the case may be, if at any time
any payment of any of the Guaranteed Obligations is rescinded or must otherwise be returned by the
Agent or any Lender or any other Person upon the insolvency, bankruptcy or reorganization of
Lafarge Canada or otherwise, all as though such payment had not been made.

          Section 8.03. Waivers and Acknowledgments. (a) Each Canadian Guarantor hereby
unconditionally and irrevocably waives promptness, diligence, notice of acceptance, presentment,
demand for performance, notice of nonperformance, default, acceleration, protest or dishonor and
any other notice with respect to any of the Guaranteed Obligations and this Guaranty and any
requirement that the Agent or any Lender protect, secure, perfect or insure any Lien or any
property subject thereto or exhaust any right or take any action against Lafarge Canada or any
other Person or any collateral.

          (b) Each Canadian Guarantor hereby unconditionally and irrevocably waives any right to revoke
this Guaranty and acknowledges that this Guaranty is continuing in nature and applies to all
Guaranteed Obligations, whether existing now or in the future.

          (c) Each Canadian Guarantor hereby unconditionally and irrevocably waives (i) any defense
arising by reason of any claim or defense based upon an election of remedies by the Agent or any
Lender that in any manner impairs, reduces, releases or otherwise adversely affects the
subrogation, reimbursement, exoneration, contribution or indemnification rights of such Canadian
Guarantor or other rights of such Canadian Guarantor to proceed against Lafarge Canada, any other
guarantor or any other Person or any collateral and (ii) any defense based on any right of set-off
or counterclaim against or in respect of the obligations of such Each Canadian Guarantor hereunder.

          (d) Each Canadian Guarantor hereby unconditionally and irrevocably waives any duty on the part
of the Agent or any Lender to disclose to such Canadian Guarantor any matter, fact or thing
relating to the business, condition (financial or otherwise), operations, performance, properties
or prospects of Lafarge Canada or any of its Subsidiaries now or hereafter known by the Agent or
such Lender.

          (e) Each Canadian Guarantor acknowledges that it will receive substantial direct and indirect
benefits from the financing arrangements contemplated by this Agreement and that the waivers set
forth in Section 8.02 and this Section 8.03 are knowingly made in contemplation of such benefits.

          Section 8.04. Subrogation. Each Canadian Guarantor hereby unconditionally and
irrevocably agrees not to exercise any rights that it may now have or hereafter acquire against
Lafarge Canada or any other insider guarantor that arise from the existence, payment, performance
or enforcement of such Canadian Guarantor’s obligations under or in respect of this Agreement,
including, without limitation, any right of subrogation, reimbursement, exoneration, contribution
or indemnification and any right to participate in any claim or remedy of the Agent or any Lender
against any other or any other insider guarantor or any collateral, whether or not such claim,
remedy or right arises in equity or under contract, statute or common law, including, without
limitation, the right to take or receive from Lafarge Canada or any other insider guarantor,
directly or indirectly, in cash or other property or by set-off or in any other manner, payment or
security on account of such claim, remedy or right, unless and until all of the Guaranteed
Obligations and all other amounts payable under this Guaranty shall have been paid in full in cash,
all Bankers’ Acceptances and Acceptance Notes shall have expired or been terminated and the
Commitments shall have expired or been terminated. If any amount shall be paid to any Canadian
Guarantor in violation of the immediately preceding sentence at any time prior to the latest of (a)
the payment in full in cash of the Guaranteed Obligations and all other amounts payable under this
Guaranty, (b) the Termination Date and (c) the latest date of expiration or termination of all
Bankers’ Acceptances and Acceptance Notes, such amount shall be

49

 

received and held in trust for the
benefit of the Agent and the Lenders, shall be segregated from other property and funds of such
Canadian Guarantor and shall forthwith be paid or delivered to the Agent in the same form as so
received (with any necessary endorsement or assignment) to be credited and applied to the
Guaranteed Obligations and all other amounts payable under this Guaranty, whether matured or
unmatured, in accordance with the terms of this Agreement and the Notes, or to be held as
collateral for any Guaranteed Obligations or other amounts payable under this Guaranty thereafter
arising. If (i) any Canadian Guarantor shall make payment to the Agent or any Lender of all or any
part of the Guaranteed Obligations, (ii) all of the Guaranteed Obligations and all other amounts
payable under this Guaranty shall have been paid in full in cash, (iii) the Termination Date shall
have occurred and (iv) all Bankers’ Acceptances and Acceptance Notes shall have expired or been
terminated, the Agent and the Lenders will, at the request and expense or such Canadian Guarantor,
execute and deliver to the Company appropriate documents, without recourse and without
representation or warranty, necessary to evidence the transfer by subrogation to such Canadian
Guarantor of an interest in the Guaranteed Obligations resulting from such payment made by such
Canadian Guarantor pursuant to this Guaranty.

          Section 8.05. Subordination. Each Canadian Guarantor hereby subordinates any and all
debts, liabilities and other obligations owed to such Canadian Guarantor by Lafarge Canada (the
“Subordinated Obligations”) to the Guaranteed Obligations to the extent and in the manner
hereinafter set forth in this Section 8.05:

          (a) Prohibited Payments, Etc. Except during the continuance of a Default (including
the commencement and continuation of any proceeding under any Bankruptcy Law relating to Lafarge
Canada), such Canadian Guarantor may receive regularly scheduled payments from Lafarge Canada on
account of the Subordinated Obligations. After the occurrence and during the continuance of any
Default (including the commencement and continuation of any proceeding under any Bankruptcy Law
relating to Lafarge Canada), however, unless the Required Lenders otherwise agree, such Canadian
Guarantor shall not demand, accept or take any action to collect any payment on account of the
Subordinated Obligations.

          (b) Prior Payment of Guaranteed Obligations. In any proceeding under any Bankruptcy
Law relating to Lafarge Canada, such Canadian Guarantor agrees that the Agent and the Lenders shall
be entitled to receive payment in full in cash of all Guaranteed Obligations (including all interest and
expenses accruing after the commencement of a proceeding under any Bankruptcy Law, whether or not
constituting an allowed claim in such proceeding (“Post Petition Interest”)) before such
Canadian Guarantor receives payment of any Subordinated Obligations.

          (c) Turn-Over. After the occurrence and during the continuance of any Default
(including the commencement and continuation of any proceeding under any Bankruptcy Law relating to
Lafarge Canada), such Canadian Guarantor shall, if the Agent so requests, collect, enforce and
receive payments on account of the Subordinated Obligations as trustee for the Agent and the
Lenders and deliver such payments to the Agent on account of the Guaranteed Obligations (including
all Post Petition Interest), together with any necessary endorsements or other instruments of
transfer, but without reducing or affecting in any manner the liability of such Canadian Guarantor
under the other provisions of this Guaranty.

          (d) Agent Authorization. After the occurrence and during the continuance of any
Default (including the commencement and continuation of any proceeding under any Bankruptcy Law
relating to Lafarge Canada), the Agent is authorized and empowered (but without any obligation to
so do), in its discretion, (i) in the name of such Canadian Guarantor, to collect and enforce, and
to submit claims in respect of, Subordinated Obligations and to apply any amounts received thereon
to the Guaranteed Obligations (including any and all Post Petition Interest), and (ii) to require
such Canadian Guarantor (A) to collect and enforce, and to submit claims in respect of,
Subordinated Obligations and (B) to pay any amounts received on such obligations to the Agent for
application to the Guaranteed Obligations (including any and all Post Petition Interest).

          Section 8.06. Guaranty Supplements. Upon the execution and delivery by any Person of
a guaranty supplement in substantially the form of Exhibit E hereto (each, a “Guaranty
Supplement”), (a) such Person shall be referred to as an “Additional Guarantor” and shall become
and be a Canadian Guarantor hereunder, and each reference in this Guaranty to a “Canadian
Guarantor” shall also mean and be a reference to such Additional Guarantor and (b) each reference
herein to “this Guaranty,” “hereunder,” “hereof” or words of like import referring to this Guaranty
shall mean and be a reference to this Guaranty as supplemented by such Guaranty Supplement.

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          Section 8.07. Continuing Guaranty; Assignments. This Guaranty is a continuing
guaranty and shall (a) remain in full force and effect until the latest of (i) the payment in full
in cash of the Guaranteed Obligations and all other amounts payable under this Guaranty, (ii) the
Termination Date and (iii) the latest date of expiration or termination of all Bankers’ Acceptances
and Acceptance Notes, (b) be binding upon each Canadian Guarantor, its successors and assigns and
(c) inure to the benefit of and be enforceable by the Agent and the Lenders and their successors,
transferees and assigns. Without limiting the generality of clause (c) of the immediately
preceding sentence, any Lender may assign or otherwise transfer all or any portion of its rights
and obligations under this Agreement (including, without limitation, all or any portion of its
Canadian Commitments, the Canadian Advances owing to it and the Canadian Note or Notes held by it)
to any other Person, and such other Person shall thereupon become vested with all the benefits in
respect thereof granted to such Lender herein or otherwise, in each case as and to the extent
provided in Section 10.07. No Canadian Guarantor shall have the right to assign its rights
hereunder or any interest herein without the prior written consent of the Lenders.

ARTICLE IX

THE AGENT

          Section 9.01. Authorization and Action. Each Lender hereby appoints and authorizes
the Agent to take such action as agent on its behalf and to exercise such powers and discretion
under this Agreement as are delegated to the Agent by the terms hereof, together with such powers
and discretion as are reasonably incidental thereto. As to any matters not expressly
provided for by this Agreement (including, without limitation, enforcement or collection of
the Notes), the Agent shall not be required to exercise any discretion or take any action, but
shall be required to act or to refrain from acting (and shall be fully protected in so acting or
refraining from acting) upon the instructions of the Required Lenders, and such instructions shall
be binding upon all Lenders and all holders of Notes; provided, however, that the
Agent shall not be required to take any action that exposes the Agent to personal liability or that
is contrary to this Agreement or applicable law. The Agent agrees to give to each Lender prompt
notice of each notice given to it by any Borrower pursuant to the terms of this Agreement.

          Section 9.02. Agent’s Reliance, Etc. Neither the Agent nor any of its directors,
officers, agents or employees shall be liable for any action taken or omitted to be taken by it or
them under or in connection with this Agreement, except for its or their own gross negligence or
willful misconduct. Without limitation of the generality of the foregoing, the Agent: (i) may
treat the Lender that made any Advance as the holder of the Debt resulting therefrom until the
Agent receives and accepts an Assumption Agreement entered into by an Assuming Lender as provided
in Section 2.20 or an Assignment and Acceptance entered into by such Lender, as assignor, and an
Eligible Assignee, as assignee, as provided in Section 10.07; (ii) may consult with legal counsel
(including counsel for the Borrowers), independent public accountants and other experts selected by
it and shall not be liable for any action taken or omitted to be taken in good faith by it in
accordance with the advice of such counsel, accountants or experts; (iii) makes no warranty or
representation to any Lender and shall not be responsible to any Lender for any statements,
warranties or representations (whether written or oral) made in or in connection with this
Agreement; (iv) shall not have any duty to ascertain or to inquire as to the performance,
observance or satisfaction of any of the terms, covenants or conditions of this Agreement on the
part of any Borrower or the existence at any time of any Default or to inspect the property
(including the books and records) of any Borrower; (v) shall not be responsible to any Lender for
the due execution, legality, validity, enforceability, genuineness, sufficiency or value of, or the
perfection or priority of any lien or security interest created or purported to be created under or
in connection with, this Agreement or any other instrument or document furnished pursuant hereto;
and (vi) shall incur no liability under or in respect of this Agreement by acting upon any notice,
consent, certificate or other instrument or writing (which may be by telecopier) believed by it to
be genuine and signed or sent by the proper party or parties.

          Section 9.03. Citibank and Affiliates. With respect to its Commitment, the Advances
made by it and the Note issued to it, Citibank shall have the same rights and powers under this
Agreement as any other Lender and may exercise the same as though it were not the Agent; and the
term “Lender” or “Lenders” shall, unless otherwise expressly indicated, include Citibank in its
individual capacity. Citibank and its Affiliates may accept deposits from, lend money to, act as
trustee under indentures of, accept investment banking engagements from and generally engage in any
kind of business with, any Borrower, any Subsidiary of any Borrower and any Person who may do
business with or own securities of any Borrower or any such Subsidiary, all as if Citibank were not
the Agent and without any duty to account therefor to the Lenders. The Agent shall have no duty to
disclose

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information obtained or received by it or any of its Affiliates relating to the Company or
its Subsidiaries to the extent such information was obtained or received in any capacity other than
as Agent.

          Section 9.04. Lender Credit Decision. Each Lender acknowledges that it has,
independently and without reliance upon the Agent or any other Lender and based on the financial
statements referred to in Section 4.01 and such other documents and information as it has deemed
appropriate, made its own credit analysis and decision to enter into this Agreement. Each Lender
also acknowledges that it will, independently and without reliance upon the Agent or any other
Lender and based on such documents and information as it shall deem appropriate at the time,
continue to make its own credit decisions in taking or not taking action under this Agreement.

          Section 9.05. Indemnification. The Lenders severally and not jointly agree to
indemnify the Agent (in its capacity as Agent to the extent not reimbursed by the Borrowers),
ratably according to the respective principal amounts of the Revolving
Credit Advances then owed to each of them (or if no Revolving Credit Advances are at the time
outstanding, ratably according to the respective amounts of their Commitments), from and against
any and all liabilities, obligations, losses, damages, penalties, actions, judgments, suits, costs,
expenses or disbursements of any kind or nature whatsoever that may be imposed on, incurred by, or
asserted against the Agent in any way relating to or arising out of this Agreement or any action
taken or omitted by the Agent under this Agreement (collectively, the “Indemnified Costs”),
provided that no Lender shall be liable for any portion of the Indemnified Costs resulting
from the Agent’s gross negligence or willful misconduct. Without limitation of the foregoing, each
Lender agrees to reimburse the Agent promptly upon demand for its ratable share of any
out-of-pocket expenses (including reasonable counsel fees) incurred by the Agent in connection with
the preparation, execution, delivery, administration, modification, amendment or enforcement
(whether through negotiations, legal proceedings or otherwise) of, or legal advice in respect of
rights or responsibilities under, this Agreement, to the extent that the Agent is not reimbursed
for such expenses by the Borrowers. In the case of any investigation, litigation or proceeding
giving rise to any Indemnified Costs, this Section 9.05 applies whether any such investigation,
litigation or proceeding is brought by the Agent, any Lender or a third party.

          Section 9.06. Successor Agent. The Agent may resign at any time by giving written
notice thereof to the Lenders and the Borrowers and may be removed at any time with or without
cause by the Required Lenders. Upon any such resignation or removal, the Required Lenders shall
have the right to appoint a successor Agent. If no successor Agent shall have been so appointed by
the Required Lenders, and shall have accepted such appointment, within 30 days after the retiring
Agent’s giving of notice of resignation or the Required Lenders’ removal of the retiring Agent,
then the retiring Agent may, on behalf of the Lenders, appoint a successor Agent, which shall be a
commercial bank organized under the laws of the United States of America or of any State thereof
and having a combined capital and surplus of at least $500,000,000. Upon the acceptance of any
appointment as Agent hereunder by a successor Agent, such successor Agent shall thereupon succeed
to and become vested with all the rights, powers, discretion, privileges and duties of the retiring
Agent, and the retiring Agent shall be discharged from its duties and obligations under this
Agreement. After any retiring Agent’s resignation or removal hereunder as Agent, the provisions of
this Article VII shall inure to its benefit as to any actions taken or omitted to be taken by it
while it was Agent under this Agreement.

          Section 9.07. Other Agents. Each Lender and each Borrower hereby acknowledges that
none of the syndication agent, the joint arrangers and joint bookrunners nor any other Lender
designated as any “Agent” on the signature pages hereof (other than the Agent) has any liability
hereunder other than in its capacity as a Lender.

ARTICLE X

MISCELLANEOUS

     Section 10.01. Amendments, Etc. No amendment or waiver of any provision of this
Agreement or the Revolving Credit Notes, nor consent to any departure by any Borrower therefrom,
shall in any event be effective unless the same shall be in writing and signed by the Required
Lenders, and then such waiver or consent shall be effective only in the specific instance and for
the specific purpose for which given; provided, however, that (a) that no
amendment, waiver or consent shall, unless in writing and signed by all the Lenders (i) change the
percentage of the Commitments or of the aggregate unpaid principal amount of the Revolving Credit
Advances that

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shall be required for the Lenders or any of them to take any action hereunder, (ii)
amend this Section 10.01 or (iii) release any Canadian Guarantor pursuant to its guaranty under
Article VIII hereof, and (b) no amendment, waiver or consent shall, unless in writing and signed by
each Lender affected thereby, do any of the following: (i) waive any of the conditions specified
in Section 3.01, (ii) increase the Commitments of such Lender or subject such Lender to any
additional obligations, (iii) reduce or subordinate the principal of, or interest or rate on, the
Advances or any fees or other amounts payable hereunder to such Lender, (iv) postpone any date
fixed for any payment of principal of, or interest on, the Advances or any fees or other amounts
payable hereunder to such Lender or (v) reduce or limit the obligations of the Company under
Section 8.01 or release the Company or otherwise limit the Company’s liability with respect to
the obligations of Lafarge Canada hereunder; and provided further that no
amendment, waiver or consent shall, unless in writing and signed by the Agent in addition to the
Lenders required above to take such action, affect the rights or duties of the Agent under this
Agreement or any Note.

          Section 10.02. Notices, Etc. (a) All notices and other communications provided for
hereunder shall be either (x) in writing (including telecopier communication) and mailed,
telecopied or delivered or (y) to the extent set forth in Section 10.02(b) and in the proviso to
this Section 10.02(a), by electronic mail confirmed immediately in writing, if to any Borrower, c/o
the Company at its address at 12950 Worldgate Drive, Herndon, Virginia 20170, Attention:
Treasurer; if to any Initial Lender, at its Domestic Lending Office specified opposite its name on
Schedule I hereto; if to any other Lender, at its Domestic Lending Office specified in the
Assumption Agreement or the Assignment and Acceptance pursuant to which it became a Lender; and if
to the Agent, at its address at Two Penns Way, New Castle, Delaware 19720, Attention: Bank Loan
Syndications Department; or, as to any Borrower or the Agent, at such other address as shall be
designated by such party in a written notice to the other parties and, as to each other party, at
such other address as shall be designated by such party in a written notice to the Borrowers and
the Agent; provided that materials required to be delivered pursuant to Section 5.01(j)(i),
(ii) and (iv) shall be delivered to the Agent as specified in Section 10.02(b) or as otherwise
specified to the Company by the Agent. All such notices and communications shall, when mailed,
telecopied or e-mailed, be effective when deposited in the mails, telecopied or confirmed by
e-mail, respectively, except that notices and communications to the Agent pursuant to Article II,
III or VII shall not be effective until received by the Agent. Delivery by telecopier of an
executed counterpart of any amendment or waiver of any provision of this Agreement or the Notes or
of any Exhibit hereto to be executed and delivered hereunder shall be effective as delivery of a
manually executed counterpart thereof.

          (b) Materials required to be delivered pursuant to Section 5.01(j)(i), (ii) and (iv) shall be
delivered to the Agent in an electronic medium in a format acceptable to the Agent by e-mail at
oploanswebadmin@citigroup.com. The Company agrees that the Agent may make such materials, as well
as any other written information, documents, instruments and other material relating to the
Company, any of its Subsidiaries or any other materials or matters relating to this Agreement, the
Notes or any of the transactions contemplated hereby (collectively, the “Communications”)
available to the Lenders by posting such notices on Intralinks or a substantially similar
electronic system (the “Platform”). The Borrower acknowledges that (i) the distribution of
material through an electronic medium is not necessarily secure and that there are confidentiality
and other risks associated with such distribution, (ii) the Platform is provided “as is” and “as
available” and (iii) neither the Agent nor any of its Affiliates warrants the accuracy, adequacy or
completeness of the Communications or the Platform and each expressly disclaims liability for
errors or omissions in the Communications or the Platform. No warranty of any kind, express,
implied or statutory, including, without limitation, any warranty of merchantability, fitness for a
particular purpose, non-infringement of third party rights or freedom from viruses or other code
defects, is made by the Agent or any of its Affiliates in connection with the Platform.

          (c) Each Lender agrees that notice to it (as provided in the next sentence) (a
“Notice”) specifying that any Communications have been posted to the Platform shall
constitute effective delivery of such information, documents or other materials to such Lender for
purposes of this Agreement. Each Lender agrees (i) to notify the Agent in writing of such Lender’s
e-mail address to which a Notice may be sent by electronic transmission (including by electronic
communication) on or before the date such Lender becomes a party to this Agreement (and from time
to time thereafter to ensure that the Agent has on record an effective e-mail address for such
Lender) and (ii) that any Notice may be sent to such e-mail address.

          (d) Notwithstanding anything to the contrary contained in this Agreement or any Note, (i) any
notice to the Borrowers or to any one of them required under this Agreement or any such Note that
is

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delivered to the Company shall constitute effective notice to the Borrowers or to any such
Borrower, including the Company and (ii) any Notice of Borrowing or any notice of Conversion
delivered pursuant to Section 2.10 may be delivered by any Borrower or by the Company, on behalf of
any other Borrower. Each Initial Borrower (other than the Company) and each Designated Subsidiary
hereby irrevocably appoints the Company as its authorized agent to receive and deliver notices in
accordance with this Section 10.02, and hereby irrevocably agrees that (A) in the case of clause
(i) of the immediately preceding sentence, the failure of the Company to give any notice referred
to therein to any such Initial Borrower or any such Designated Subsidiary, as the case may be, to which
such notice applies shall not impair or affect the validity of such notice with respect thereto and
(B) in the case of clause (ii) of the immediately preceding sentence, the delivery of any such
notice by the Company, on behalf of any other Borrower, shall be binding on such other Borrower to
the same extent as if such notice had been executed and delivered directly by such Borrower.

          Section 10.03. No Waiver; Remedies. No failure on the part of any Lender or the Agent
to exercise, and no delay in exercising, any right hereunder or under any Note shall operate as a
waiver thereof; nor shall any single or partial exercise of any such right preclude any other or
further exercise thereof or the exercise of any other right. The remedies herein provided are
cumulative and not exclusive of any remedies provided by law.

          Section 10.04. Costs and Expenses. (a) The Borrowers agree jointly and severally to
pay on demand all costs and expenses of the Agent in connection with the preparation, execution,
delivery, administration, modification and amendment of this Agreement, the Notes and the other
documents to be delivered hereunder, including, without limitation, (A) all due diligence,
syndication (including printing, distribution and bank meetings), transportation, computer,
duplication, appraisal, consultant, and audit expenses and (B) the reasonable fees and expenses of
counsel for the Agent with respect thereto and with respect to advising the Agent as to its rights
and responsibilities under this Agreement. The Borrowers further agree jointly and severally to
pay on demand all costs and expenses of the Agent and the Lenders, if any (including, without
limitation, reasonable counsel fees and expenses), in connection with the enforcement (whether
through negotiations, legal proceedings or otherwise) of this Agreement, the Notes and the other
documents to be delivered hereunder, including, without limitation, reasonable fees and expenses of
counsel for the Agent and each Lender in connection with the enforcement of rights under this
Section 10.04(a).

          (b) The Borrowers agree jointly and severally to indemnify and hold harmless the Agent and
each Lender and each of their Affiliates and their officers, directors, employees, agents and
advisors (each, an “Indemnified Party”) from and against any and all claims, damages,
losses, liabilities and expenses (including, without limitation, reasonable fees and expenses of
counsel) incurred by or asserted or awarded against any Indemnified Party, in each case arising out
of or in connection with or by reason of (including, without limitation, in connection with any
investigation, litigation or proceeding or preparation of a defense in connection therewith) (i)
the Notes, this Agreement, any of the transactions contemplated herein or the actual or proposed
use of the proceeds of the Advances or (ii) the actual or alleged presence of Hazardous Materials
on any property of the Company or any of its Subsidiaries or any Environmental Action relating in
any way to the Company or any of its Subsidiaries, except to the extent such claim, damage, loss,
liability or expense is found in a judgment by a court of competent jurisdiction to have resulted
from such Indemnified Party’s gross negligence or willful misconduct. In the case of an
investigation, litigation or other proceeding to which the indemnity in this Section 10.04(b)
applies, such indemnity shall be effective whether or not such investigation, litigation or
proceeding is brought by any Borrower, its directors, shareholders or creditors or an Indemnified
Party or any other Person or any Indemnified Party is otherwise a party thereto and whether or not
the transactions contemplated hereby are consummated. Each Borrower also agrees not to assert any
claim for special, indirect, consequential or punitive damages against the Agent, any Lender, any
of their Affiliates, or any of their respective directors, officers, employees, attorneys and
agents, on any theory of liability, arising out of or otherwise relating to the Notes, this
Agreement, any of the transactions contemplated herein or the actual or proposed use of the
proceeds of the Advances.

          (c) If any payment of principal of, or Conversion of, any Eurodollar Rate Advance or LIBO Rate
Advance is made by any Borrower to or for the account of a Lender other than on the last day of the
Interest Period for such Advance, as a result of a payment or Conversion pursuant to Section
2.10(d) or (e), 2.12 or 2.14, acceleration of the maturity of the Notes pursuant to Section 6.01 or
for any other reason, or by an Eligible Assignee to a Lender other than on the last day of the
Interest Period for such Advance upon an assignment of rights and obligations under this Agreement
pursuant to Section 10.07 as a result of a demand by any Borrower pursuant to

54

 

Section 10.07(a),
such Borrower shall, upon demand by such Lender (with a copy of such demand to the Agent), pay to
the Agent for the account of such Lender any amounts required to compensate such Lender for any
additional losses, costs or expenses that it may reasonably incur as a result of such payment or
Conversion, including, without limitation, any loss (including loss of anticipated profits), cost or expense incurred by
reason of the liquidation or reemployment of deposits or other funds acquired by any Lender to fund
or maintain such Advance.

          (d) Without prejudice to the survival of any other agreement of the Borrowers hereunder, the
agreements and obligations of the Borrowers contained in Sections 2.13, 2.16 and 10.04 shall
survive the payment in full of principal, interest and all other amounts payable hereunder and
under the Notes.

          Section 10.05. Right of Set-off. Upon (i) the occurrence and during the continuance
of any Event of Default and (ii) the making of the request or the granting of the consent specified
by Section 6.01 to authorize the Agent to declare the Notes due and payable pursuant to the
provisions of Section 6.01, each Lender and each of its Affiliates is hereby authorized at any time
and from time to time, to the fullest extent permitted by law, to set off and apply any and all
deposits (general or special, time or demand, provisional or final) at any time held and other
indebtedness at any time owing by such Lender or such Affiliate to or for the credit or the account
of any Borrower against any and all of the obligations of any Borrower now or hereafter existing
under this Agreement and the Note held by such Lender, whether or not such Lender shall have made
any demand under this Agreement or such Note and although such obligations may be unmatured. Each
Lender agrees promptly to notify the applicable Borrower after any such set-off and application,
provided that the failure to give such notice shall not affect the validity of such set-off
and application. The rights of each Lender and its Affiliates under this Section are in addition
to other rights and remedies (including, without limitation, other rights of set-off) that such
Lender and its Affiliates may have.

          Section 10.06. Binding Effect. This Agreement shall become effective (other than
Sections 2.01 and 2.03, which shall only become effective upon satisfaction of the conditions
precedent set forth in Section 3.01) when it shall have been executed by the Borrowers and the
Agent and when the Agent shall have been notified by each Initial Lender that such Initial Lender
has executed it and thereafter shall be binding upon and inure to the benefit of each Borrower, the
Agent and each Lender and their respective successors and assigns, except that no Borrower shall
have the right to assign its rights hereunder or any interest herein without the prior written
consent of all of the Lenders.

          Section 10.07. Assignments and Participations. (a) Each Lender may and, if demanded
by the Company (following a demand by such Lender pursuant to Section 2.13 or 2.16 or upon a
reasonable determination by the Company that a change in law or circumstances has created a
reasonable likelihood that such Lender will make a demand pursuant to Section 2.13 or 2.16 and only
if no Event of Default has occurred and is continuing) upon at least five Business Days’ notice to
such Lender and the Agent, will assign to one or more Persons all or a portion of its rights and
obligations under this Agreement (including, without limitation, all or a portion of its
Commitment, the Revolving Credit Advances owing to it and the Revolving Credit Note or Notes held
by it); provided, however, that (i) each such assignment shall be of a constant,
and not a varying, percentage of all rights and obligations under this Agreement (other than any
right to make Competitive Bid Advances, Competitive Bid Advances owing to it and Competitive Bid
Notes), (ii) except in the case of an assignment to a Person that, immediately prior to such
assignment, was a Lender or an assignment of all of a Lender’s rights and obligations under this
Agreement, the amount of the Commitment of the assigning Lender being assigned pursuant to each
such assignment (determined as of the date of the Assignment and Acceptance with respect to such
assignment) shall in no event be less than $5,000,000 or an integral multiple of $1,000,000 in
excess thereof, (iii) each such assignment shall be to an Eligible Assignee, (iv) each such
assignment made as a result of a demand by the Company pursuant to this Section 10.07(a) shall be
arranged by the Company after consultation with the Agent and shall be either an assignment of all
of the rights and obligations of the assigning Lender under this Agreement or an assignment of a
portion of such rights and obligations made concurrently with another such assignment or other such
assignments that together cover all of the rights and obligations of the assigning Lender under
this Agreement, (v) no Lender shall be obligated to make any such assignment as a result of a
demand by the Company pursuant to this Section 10.07(a) unless and until such Lender shall have
received one or more payments from either the Borrowers or one or more Eligible Assignees in an
aggregate amount at least equal to the aggregate outstanding principal amount of the Advances owing
to such Lender, together with accrued interest thereon to the date of payment of such principal
amount and all other amounts payable to such Lender under this Agreement, and (vi) the parties to each

55

 

such assignment
shall execute and deliver to the Agent, for its acceptance and recording in the Register, an
Assignment and Acceptance, together with any Revolving Credit Note subject to such assignment and a
processing and recordation fee of $3,500 payable by the parties to each such assignment,
provided, however, that in the case of each assignment made as a result of a demand
by the Company, such recordation fee shall be payable by the Borrowers except that no such
recordation fee shall be payable in the case of an assignment made at the request of the Company to
an Eligible Assignee that is an existing Lender, and (vii) each such assignment shall be made with
the consent, not to be unreasonably withheld, of the Agent and the Company, provided that
any Lender may, without the approval of the Borrowers and the Agent, assign all or a portion of its
rights to any of its Affiliates so long as such assignment does not result in any increased cost
to, or obligation of, the Borrowers. Upon such execution, delivery, acceptance and recording, from
and after the effective date specified in each Assignment and Acceptance, (x) the assignee
thereunder shall be a party hereto and, to the extent that rights and obligations hereunder have
been assigned to it pursuant to such Assignment and Acceptance, have the rights and obligations of
a Lender hereunder and (y) the Lender assignor thereunder shall, to the extent that rights and
obligations hereunder have been assigned by it pursuant to such Assignment and Acceptance,
relinquish its rights (other than its rights under Section 2.13, 2.16 and 10.04 to the extent any
claim thereunder relates to an event arising prior such assignment) and be released from its
obligations under this Agreement (and, in the case of an Assignment and Acceptance covering all or
the remaining portion of an assigning Lender’s rights and obligations under this Agreement, such
Lender shall cease to be a party hereto).

          (b) By executing and delivering an Assignment and Acceptance, the Lender assignor thereunder
and the assignee thereunder confirm to and agree with each other and the other parties hereto as
follows: (i) other than as provided in such Assignment and Acceptance, such assigning Lender makes
no representation or warranty and assumes no responsibility with respect to any statements,
warranties or representations made in or in connection with this Agreement or the execution,
legality, validity, enforceability, genuineness, sufficiency or value of, or the perfection or
priority of any lien or security interest created or purported to be created under or in connection
with, this Agreement or any other instrument or document furnished pursuant hereto; (ii) such
assigning Lender makes no representation or warranty and assumes no responsibility with respect to
the financial condition of the Borrowers or the performance or observance by the Borrowers of any
of its obligations under this Agreement or any other instrument or document furnished pursuant
hereto; (iii) such assignee confirms that it has received a copy of this Agreement, together with
copies of the financial statements referred to in Section 4.01 and such other documents and
information as it has deemed appropriate to make its own credit analysis and decision to enter into
such Assignment and Acceptance; (iv) such assignee will, independently and without reliance upon
the Agent, such assigning Lender or any other Lender and based on such documents and information as
it shall deem appropriate at the time, continue to make its own credit decisions in taking or not
taking action under this Agreement; (v) such assignee confirms that it is an Eligible Assignee;
(vi) such assignee appoints and authorizes the Agent to take such action as agent on its behalf and
to exercise such powers and discretion under this Agreement as are delegated to the Agent by the
terms hereof, together with such powers and discretion as are reasonably incidental thereto; and
(vii) such assignee agrees that it will perform in accordance with their terms all of the
obligations that by the terms of this Agreement are required to be performed by it as a Lender.

          (c) Upon its receipt of an Assignment and Acceptance executed by an assigning Lender and an
assignee representing that it is an Eligible Assignee, together with any Revolving Credit Note or
Notes subject to such assignment, the Agent shall, if such Assignment and Acceptance has been
completed and is in substantially the form of Exhibit C hereto, (i) accept such Assignment and
Acceptance, (ii) record the information contained therein in the Register and (iii) give prompt
notice thereof to the Borrowers.

          (d) The Agent shall maintain at its address referred to in Section 10.02 a copy of each
Assumption Agreement and each Assignment and Acceptance delivered to and accepted by it and a
register for the recordation of the names and addresses of the Lenders and the Commitment of, and
principal amount of the Advances owing to, each Lender from time to time (the “Register”).
The entries in the Register shall be conclusive and binding for all purposes, absent manifest
error, and the Borrowers, the Agent and the Lenders may treat each Person whose name is recorded in
the Register as a Lender hereunder for all purposes of this Agreement. The Register shall be
available for inspection by any Borrower or any Lender at any reasonable time and from time to time
upon reasonable prior notice.

56

 

          (e) Each Lender may sell participations to one or more banks or other entities (other than any
Borrower or any Affiliate of any Borrower) in or to all or a portion of its rights and obligations
under this Agreement (including, without limitation, all or a portion of its Commitment, the
Advances owing to it and any Note or Notes held by it); provided, however, that (i)
such Lender’s obligations under this Agreement (including, without limitation, its Commitment to
the Borrowers hereunder) shall remain unchanged, (ii) such Lender shall remain solely responsible
to the other parties hereto for the performance of such obligations, (iii) such Lender shall remain
the holder of any such Note for all purposes of this Agreement, (iv) the Borrowers, the Agent and
the other Lenders shall continue to deal solely and directly with such Lender in connection with
such Lender’s rights and obligations under this Agreement and (v) no participant under any such
participation shall have any right to approve any amendment or waiver of any provision of this
Agreement or any Note, or any consent to any departure by any Borrower therefrom, except to the
extent that such amendment, waiver or consent would reduce the principal of, or interest on, the
Notes or any fees or other amounts payable hereunder, in each case to the extent subject to such
participation, or postpone any date fixed for any payment of principal of, or interest on, the
Notes or any fees or other amounts payable hereunder, in each case to the extent subject to such
participation.

          (f) Any Lender may, in connection with any assignment or participation or proposed assignment
or participation pursuant to this Section 10.07, disclose to the assignee or participant or
proposed assignee or participant, any information relating to any Borrower furnished to such Lender
by or on behalf of such Borrower; provided that, prior to any such disclosure, the assignee
or participant or proposed assignee or participant shall agree to preserve the confidentiality of
any Confidential Information relating to such Borrower received by it from such Lender.

          (g) Notwithstanding any other provision set forth in this Agreement, any Lender may at any
time create a security interest in all or any portion of its rights under this Agreement
(including, without limitation, the Advances owing to it and any Note or Notes held by it) in favor
of any Federal Reserve Bank in accordance with Regulation A of the Board of Governors of the
Federal Reserve System.

          Section 10.08. Designated Subsidiaries. (a) Designation. The Company may at
any time and from time to time by delivery to the Agent of a Designation Letter, duly executed by
the Company and a wholly owned Subsidiary organized under the laws of a jurisdiction in the United
States and in substantially the form of Exhibit F hereto, designate such Subsidiary as a
“Designated Subsidiary” for all purposes of this Agreement, and, upon fulfillment of the
applicable conditions set forth in Article III and after such Designation Letter is accepted by the
Agent, such Subsidiary shall thereupon become a Designated Subsidiary for all purposes of this
Agreement and, as such, shall have all of the rights and obligations of a Borrower hereunder. The
Agent shall promptly notify each Lender of each such designation by the Company and the identity of
each such Designated Subsidiary.

          (b) Termination. Upon the payment and performance in full of all of the indebtedness,
liabilities and obligations of any Borrower (other than the Company or any Borrower that is a
Significant Subsidiary of the Company that is organized under the laws of a jurisdiction in the
United States) under this Agreement and the Notes issued by it, then, so long as at such time such
Borrower has not submitted a Notice of Revolving Credit Borrowing or a Notice of Competitive Bid
Borrowing, such Borrower’s status as a Borrower shall terminate upon notice to such effect from the
Agent to the Lenders (which notice the Agent shall promptly deliver to the Lenders following its
receipt of such a request from the Company). Thereafter, the Lenders shall be under no further
obligation to make any Revolving Credit Advances to such Borrower.

          Section 10.09. Confidentiality. Neither the Agent nor any Lender shall disclose any
Confidential Information to any other Person without the consent of the Company, other than (a) to
the Agent’s or such Lender’s Affiliates and their officers, directors, employees, agents and
advisors and, as contemplated by Section 10.07(f), to actual or prospective assignees and
participants, and then only on a confidential basis, (b) as required by any law, rule or regulation
or judicial process and (d) as requested or required by any state, federal or foreign authority or
examiner regulating banks or banking.

          Section 10.10. Governing Law. This Agreement and the Notes shall be governed by, and
construed in accordance with, the laws of the State of New York.

57

 

          Section 10.11. Execution in Counterparts. This Agreement may be executed in any
number of counterparts and by different parties hereto in separate counterparts, each of which when
so executed shall be deemed to be an original and all of which taken together shall constitute one
and the same agreement. Delivery of an executed counterpart of a signature page to this Agreement
by telecopier shall be effective as delivery of a manually executed counterpart of this Agreement.

          Section 10.12. Patriot Act Notice. Each Lender and the Agent (for itself and not on
behalf of any Lender) hereby notifies the Loan Parties that pursuant to the requirements of the
Patriot Act, it is required to obtain, verify and record information that identifies each Loan
Party, which information includes the name and address of such Loan Party and other information
that will allow such Lender or the Agent, as applicable, to identify such Loan Party in accordance
with the Patriot Act. The Borrowers shall, and shall cause each of its Subsidiaries to, provide to
the extent commercially reasonable, such information and take such actions as are reasonably
requested by the Agent or any Lender in order to assist the Agent and the Lenders in maintaining
compliance with the Patriot Act.

          Section 10.13. Judgment. (a) If for the purposes of obtaining judgment in any court
it is necessary to convert a sum due hereunder in US Dollars or Canadian Dollars into another
currency, the parties hereto agree, to the fullest extent that they may effectively do so, that the
rate of exchange used shall be that at which in accordance with normal banking procedures the Agent
could purchase US Dollars or Canadian Dollars with such other currency at Citibank’s principal
office in London at 11:00 A.M. (London time) on the Business Day preceding that on which final
judgment is given.

          (b) The obligation of each Borrower in respect of any sum due from it in any currency (the
“Primary Currency”) to any Lender or the Agent hereunder shall, notwithstanding any
judgment in any other currency, be discharged only to the extent that on the Business Day following
receipt by such Lender or the Agent (as the case may be), of any sum adjudged to be so due in such
other currency, such Lender or the Agent (as the case may be) may in accordance with normal banking
procedures purchase the applicable Primary Currency with such other currency; if the amount of the
applicable Primary Currency so purchased is less than such sum due to such Lender or the Agent (as
the case may be) in the applicable Primary Currency, such Borrower agrees, as a separate obligation
and notwithstanding any such judgment, to indemnify such Lender or the Agent (as the case may be)
against such loss, and if the amount of the applicable Primary Currency so purchased exceeds such
sum due to any Lender or the Agent (as the case may be) in the applicable Primary Currency, such
Lender or the Agent (as the case may be) agrees to remit to such Borrower such excess.

          Section 10.14. Jurisdiction, Etc. (a) Each of the parties hereto hereby irrevocably
and unconditionally submits, for itself and its property, to the nonexclusive jurisdiction of any
New York State court or federal court of the United States of America sitting in New York City, and
any appellate court from any thereof, in any action or proceeding arising out of or relating to
this Agreement or the Notes, or for recognition or enforcement of any judgment, and each of the
parties hereto hereby irrevocably and unconditionally agrees that all claims in respect of any such
action or proceeding may be heard and determined in any such New York State court or, to the extent
permitted by law, in such federal court. Each Borrower hereby agrees that service of process in
any such action or proceeding brought in the any such New York State court or in such federal court
may be made upon The Prentice-Hall Corporation System, Inc. at its offices at 80 State Street,
Albany, New York 12207-2543 (the “Process Agent”) and each Borrower hereby irrevocably appoints
the Process Agent its authorized agent to accept such service of process, and
agrees that the failure of the Process Agent to give any notice of any such service shall not
impair or affect the validity of such service or of any judgment rendered in any action or
proceeding based thereon. Each Borrower hereby further irrevocably consents to the service of
process in any action or proceeding in such courts by the mailing thereof by any parties hereto by
registered or certified mail, postage prepaid, to such Borrower at its address specified pursuant
to Section 10.02, with a copy addressed to the Law Department. Each of the parties hereto agrees
that a final judgment in any such action or proceeding shall be conclusive and may be enforced in
other jurisdictions by suit on the judgment or in any other manner provided by law. Nothing in
this Agreement shall affect any right that any party may otherwise have to bring any action or
proceeding relating to this Agreement or the Notes in the courts of any jurisdiction.

          (b) Each of the parties hereto irrevocably and unconditionally waives, to the fullest extent
it may legally and effectively do so, any objection that it may now or hereafter have to the laying
of venue of any suit, action or proceeding arising out of or relating to this Agreement or the
Notes in any New York State or federal

58

 

court. Each of the parties hereto hereby irrevocably
waives, to the fullest extent permitted by law, the defense of an inconvenient forum to the
maintenance of such action or proceeding in any such court.

          Section 10.15. Waiver of Jury Trial. Each of the Borrowers, the Agent and the Lenders
hereby irrevocably waives all right to trial by jury in any action, proceeding or counterclaim
(whether based on contract, tort or otherwise) arising out of or relating to this Agreement or the
Notes or the actions of the Agent or any Lender in the negotiation, administration, performance or
enforcement thereof.

[Signatures follow.]

59

 

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed by their
respective officers thereunto duly authorized, as of the date first above written.

	 	 	 	 	 
	 	LAFARGE NORTH AMERICA INC.

 	 
	 	By:  	/s/ Kevin Grant
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	LAFARGE CANADA INC. 

 	 
	 	By:  	                    /s/ Kevin Grant
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	LAFARGE MIDWEST INC. 

 	 
	 	By:  	                    /s/ Kevin Grant
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	LAFARGE SOUTHWEST INC. 

 	 
	 	By:  	                    /s/ Timothy Power
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	LAFARGE WEST INC. 

 	 
	 	By:  	                    /s/ Timothy Power
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	LAFARGE PRESQUE ISLE INC. 

 	 
	 	By:  	                    /s/ Kevin Grant
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	LAFARGE MID-ATLANTIC INC. 

 	 
	 	By:  	                    /s/ Kevin Grant
 	 
	 	 	Title: Vice President     	 

 

 

	 	 	 	 	 
	 	REDLAND QUARRIES NY, INC.

 	 
	 	By:  	                    /s/ Kevin Grant
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	WMI FINANCE CORPORATION 

 	 
	 	By:  	                    /s/ Kevin Grant
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	CITIBANK, N.A., 

           As Agent 

 	 
	 	By:  	                    /s/ Brigitte Vuong
 	 
	 	 	Title:     Vice President      	 

 

 

Initial Lenders

Administrative Agent

	 	 	 	 	 
	 	CITIBANK, NA., as Lender

 	 
	 	By:  	/s/ Brigitte Vuong
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	CITIBANK, NA., CANADIAN BRANCH, as 

Canadian Lender

 	 
	 	By:  	/s/ Niyousha Zarinpour
 	 
	 	 	Title: Authorized Signer     	 

	 	 	 
	 

	 	Syndication Agent

	 	 	 	 	 
	 	WACHOVIA BANK, NATIONAL ASSOCIATION,

      as Lender

 	 
	 	By:  	/s/ Andrew Phelps
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	WACHOVIA BANK, NATIONAL ASSOCIATION, 

      as Canadian Lender

 	 
	 	By:  	/s/ Andrew Phelps
 	 
	 	 	Title: Vice President     	 

Documentation Agents

	 	 	 	 	 
	 	BNP PARIBAS, as Lender

 	 
	 	By:  	/s/ Jerome D’Humieres
 	 
	 	 	Title: Director     	 

	 	 	 	 	 
	 	By:  	                      /s/ Nanette Baudon
 	 
	 	 	Title: Vice President     	 
	 	 	 	 

 

 

	 	 	 	 	 
	 	BNP PARIBAS, (CANADA), as Canadian Lender 

 	 
	 	By:  	/s/ Frank L. Shaw	 	 
	 	 	Title: Managing Director 	 

	 	 	 	 	 
	 	By:  	                      /s/ Edouard Sinor
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	JPMORGAN CHASE BANK N.A., as Lender 

 	 
	 	By:  	                      /s/ Peter M. Hayes
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	JPMORGAN CHASE BANK N.A., TORONTO 

BRANCH, as Canadian Lender

 	 
	 	By:  	/s/ Christine Chan
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	SUNTRUST BANK., as Lender 

 	 
	 	By:  	                      /s/ Van Knick
 	 
	 	 	Title: Vice President     	 

	 	 	 
	 

	 	Senior Managing Agents

	 	 	 	 	 
	 	BAYERISCHE LANDESBANK, as Lender

 	 
	 	By:  	/s/ Michael Jakob
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	By:  	                      /s/ Norman McClave
 	 
	 	 	Title:      First Vice President 	 

	 	 	 	 	 
	 	BANK OF MONTREAL, CHICAGO
BRANCH, 
as Lender 

 	 
	 	By:  	/s/ Bruce Pietka
 	 
	 	 	Title: Vice President     	 
	 	 	 	 

 

 

	 	 	 	 	 

	 	 	 	 	 
	 	BANK OF MONTREAL, as Canadian Lender 

 	 
	 	By:  	                       /s/ TK Hayes
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	ROYAL BANK OF SCOTLAND PLC, as Lender 

 	 
	 	By:  	                       /s/ Grover Fitch
 	 
	 	 	Title: Senior Vice President     	 

	 	 	 	 	 
	 	THE BANK OF NOVIA SCOTIA, as
Lender and a

Canadian Lender
	 
	 
	 	By:  	/s/ Todd Meller
 	 
	 	 	Title: Managing Director     	 

	 	 	 	 	 
	 	SOCIÉTÉ GÉNÉRALE, as Lender 

 	 
	 	By:  	          /s/ Anne Marie Dumoriter
 	 
	 	 	Title: Director     	 

	 	 	 	 	 
	 	SOCIÉTÉ GÉNÉRALE, as Canadian Lender 

 	 
	 	By:  	                                           /s/ Francois Laliberte
 	 
	 	 	Title: Managing Director     	 

	 	 	 	 	 
	 	By:  	/s/ David Baldoni
 	 
	 	 	Title: Managing Director     	 

	 	 	 	 	 
	 	BANK OF AMERICA, N.A., as Lender 

 	 
	 	By:  	/s/ Bryan A. Smith
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	BANK OF AMERICA, N.A., Canada Branch, as 

Canadian Lender

 	 
	 	By:  	/s/ Medina Sales de Andrade
 	 
	 	 	Title: Assistant Vice President     	 
	 	 	 	 

 

 

	 	 	 	 	 

	 	 	 	 	 
	 	Lenders
 

WELLS FARGO BANK, as Lender

 	 
	 	By:  	/s/ Lori Ross
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	WELLS FARGO FINANCIAL CORPORATION 

CANADA, as Canadian Lender

 	 
	 	By:  	/s/ Nick Scarfo
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	THE BANK OF NEW YORK, as Lender 

 	 
	 	By:  	/s/ David Parker
 	 
	 	 	Title: Vice President     	 

	 	 	 	 	 
	 	MANUFACTURES AND TRADERS TRUST 

COMPANY, as Lender

 	 
	 	By:  	/s/ David Diluigi
 	 
	 	 	Title: Vice President

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