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EXHIBIT 10.1

AMENDED AND RESTATED RESELLER AGREEMENT

     THIS AGREEMENT is made as of the 10th day of December, 2003, by Applera
Corporation, a Delaware corporation, acting through its Applied Biosystems
Group (“Applied Biosystems”), with a principal place of business at 35 Wiggins
Avenue, Bedford, Massachusetts 01730, U.S.A., and Digene Corporation, a
Delaware corporation (“Digene”), with its principal place of business at 1201
Clopper Road, Gaithersburg, Maryland 20878, U.S.A.

RECITALS

     The parties desire that the product of Applied Biosystems listed on
Schedule A hereto (“Product”) shall be purchased by Digene and that Digene
shall resell the Product, all upon the terms and conditions set forth herein.
The definitions of capitalized terms used but not otherwise defined herein are
set forth in Schedule C hereto.

     The parties, in consideration of the mutual obligations hereinafter set
forth and intending to be legally bound, hereby agree as follows:

	1.	 	Appointment as Reseller

     1.1 Subject to the warranties, restrictions, and obligations set forth in
this Agreement, Applied Biosystems hereby appoints Digene as its nonexclusive
reseller for the sale, distribution and promotion of the Product, and Digene
accepts such appointment. Schedule A may be amended in writing from time to
time as appropriate to reflect any additional products and applications which
the parties have agreed to include in this Agreement.

     1.2 Subject to the warranties, restrictions, and obligations set forth in
this Agreement, Digene may only resell the Product (i) under Digene’s label or
a joint Digene/Digene distributor label and (ii) only as a component of Digene
products (and only Digene products) manufactured by or for Digene which
incorporate both the Product and Digene’s proprietary Hybrid Capture® system
and improvements thereto for use in human in vitro diagnostics. In the
event that during the term of this Agreement, Digene develops one or more
products for the non-human diagnostic markets such as food and environmental
testing and/or for the human diagnostic markets not covered in this Agreement,
and can demonstrate to Applied Biosystems reasonable satisfaction that
commencement of commercial sales is imminent, at Digene’s request the parties
will negotiate in good faith a Reseller Agreement for the Product for use in
such Digene products for the non-human diagnostic markets and/or human
diagnostic markets not covered in this Agreement. Applied Biosystems
obligation in such event shall be limited to negotiating such a Reseller
Agreement in good faith and nothing contained herein shall impose any
obligation on Applied Biosystems with respect thereto other than to so
negotiate in good faith.

 

 

     1.3 In the event Digene proposes to resell Product under the label of a
third party, for use in human in vitro diagnostics or pharmaceutical
therapeutics research and development, but otherwise in accordance with Section
1.2 and 1.4, at Digene’s request Applied Biosystems will negotiate in good
faith a Reseller Agreement with such third party for the Product to be sold
under such third party’s label. Applied Biosystems obligation in such event
shall be limited to negotiating such a Reseller Agreement in good faith and
nothing contained herein shall impose any obligation on Applied Biosystems with
respect thereto other than to so negotiate in good faith.

     1.4 In no event shall Digene (a) dilute or alter the Product, (b) resell
the Product in the research market or (c) resell the Product for use in
membrane-based assays.

     1.5 Digene shall not resell any of the Product in conjunction with or for
use with any substrate or enhancer purchased from a source other than Applied
Biosystems. Substrate and enhancer, as supplied by Applied Biosystems, are
unique and specifically designed for use with the Product. Product
serviceability, as and to the extent warranted hereunder, cannot be maintained
when used in conjunction with substrate or enhancer purchased other than from
Applied Biosystems. Use of Product with substrates or enhancers purchased from
a source other than Applied Biosystems, unless such other source is selling
Applied Biosystems substrate or enhancer, shall void any Product warranty
hereunder.

     1.6 To the extent Applied Biosystems grants to any unrelated third party
the right to resell an improved formulation of the Product at any time during
the term of this Agreement, Applied Biosystems shall notify Digene of such
improved formulation of the Product. Upon notification, Digene shall have the
option of purchasing such improved formulation of the Product at a purchase
price to be agreed upon by the parties. Digene recognizes and agrees that any
new, improved or substitute dioxetane products and any new, improved or
substitute enhancer products manufactured, marketed and/or sold by Applied
Biosystems will not constitute an improved formulation of the Product and that
this Agreement does not provide Digene with any right to any new, improved or
substitute dioxetanes or enhancers.

	2.	 	Digene’s Obligations and Representations In addition to Digene’s
obligations set forth elsewhere in this Agreement, Digene shall from and after
the date of this Agreement:

     2.1 Use reasonable commercial efforts to promote, develop a market for and
sell DNA probe assays, utilizing the Product, for human in vitro
diagnostics;

     2.2 Promptly respond to all customer complaints about the Product, and
promptly notify Applied Biosystems of any recall or complaints; and

     2.3 Obtain, at its own expense, any import or export license, foreign
exchange license, foreign exchange permit, or other permit or approval it may
need for the resale of Product hereunder and otherwise comply with all
applicable Federal, state, local and foreign laws, regulations, directives,
rules and requirements governing the sale of the Product; provided,

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however, that, at the request and expense of Digene, Applied Biosystems
will aid Digene in gaining regulatory approvals where help and information
relating to the Product is required.

	3.	 	Prices and Terms of Sale

     3.1 The prices for the Product are set forth in Schedule B. Such prices
are F.O.B. Applied Biosystems shipping facility, currently in Bedford,
Massachusetts. Applied Biosystems may adjust the price list once per year
beginning July 1, 2004 as provided in Schedule B. Applied Biosystems will
notify Digene not later than thirty (30) days prior to the effective date of
any such price increase.

     3.1A No later than June 30 of each year, and subject to compliance with
the Minimum Annual Purchases set forth on Schedule A hereto, Digene shall
deliver to Applied Biosystems a non-binding forecast of the quantity of Product
it estimates it will purchase under this Agreement during the upcoming fiscal
year of Applied Biosystems ending June 30. The prices for the Product invoiced
for such fiscal year, as such prices are set forth on Schedule B, shall be
based upon the assumption that Digene in fact will purchase the forecasted
quantity during such fiscal year. If Digene in fact purchases less than the
quantity of Product it forecasted it would purchase during such fiscal year,
within thirty (30) days after the conclusion of such fiscal year, Digene shall
pay to Applied Biosystems the difference, if any, between the aggregate
purchase price paid by Digene for Product purchased during such fiscal year and
the aggregate purchase price Digene should have paid for the Product purchased
during such fiscal year based upon the quantities actually purchased, and if
Digene in fact purchases more than the quantity of Product it forecasted it
would purchase during such fiscal year, within thirty (30) days after the
conclusion of such fiscal year, Applied Biosystems shall pay to Digene the
difference between the aggregate purchase price paid by Digene for Product
purchased during such fiscal year and the aggregate purchase price Digene
should have paid for the Product purchased during such fiscal year based upon
the quantities actually purchased.

     3.1B In addition, Digene shall deliver to Applied Biosystems on each April
1, July 1, October 1, and January 1 a non-binding rolling four (4) quarter
forecast of the quantity of Product it estimates it will purchase under this
Agreement.

     3.1C If this Agreement shall expire or terminate other than at a fiscal
year end, for purposes of determining any amounts payable pursuant to the
preceding paragraph, the quantities of Product purchased during such fiscal
year in which the date of expiration or termination occurs be annualized, and
within thirty (30) days after the date of such expiration or termination,
Digene shall make the payment to Applied Biosystems or Applied Biosystems shall
make the payment to Digene, as the case may be, contemplated by this Section
3.1 based upon such annualization.

     3.1D In addition to providing the non-binding forecasts described in this
Section 3.1, Digene shall deliver binding purchase orders to Applied Biosystems
to purchase Product as contemplated by Section 4 hereof. For purposes of
determining compliance with the “Minimum Annual Purchase” under this Agreement,
and as used in Sections 3.1A and 3.1C, and for the

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purposes of Schedule B, a Product shall be deemed “purchased” on the date
of delivery to Applied Biosystems of a binding, non-cancellable purchase order
if the delivery date designated in such purchase order is equal to or less than
forty-five (45) days from the date of order; otherwise Product is deemed
“purchased” on the delivery date specified in the purchase order.

     3.2 All shipments will be invoiced at the time of shipment, including
partial shipments. Title and risk of loss shall pass to Digene when Product is
delivered to a common carrier FOB factory. Digene assumes and agrees to pay
and hold Applied Biosystems harmless from all export or import duties,
regulatory obligations (except as set forth in Section 2.3) fees or other
charges, all sales, use, excise, value added or other taxes or assessments
applicable to any sale under this Agreement (but excluding taxes, together with
any interest or penalties imposed in connection therewith, on Applied
Biosystems gross revenues or profits), and all costs and charges for
transportation, brokerage, handling and insurance of the Product from the point
of shipment.

     3.3 Except for the royalties pursuant to Section 3.4, all payments
required hereunder are due within thirty (30) days of invoicing. All payments
shall be in U.S. Dollars, without deduction or offset (except as expressly
authorized herein or in writing in advance by Applied Biosystems). If Applied
Biosystems at any time has reasonable concern about security or timeliness of
payments, it may decline to make shipments until receipt of payment or
establishment of a letter of credit or other arrangement securing payment.
Applied Biosystems may impose interest on overdue payments at the lesser of
(i)1-1/2 % per month or (ii) the maximum legal rate of interest.

     3.4 In addition to the price listed on Schedule B, Digene shall pay
Applied Biosystems royalties as set forth in Schedule B, payable with each
report submitted pursuant to Section 3.6.

     3.5 Digene shall keep, in a mutually acceptable accounting format,
complete and accurate books of account containing all particulars that may be
necessary for the purpose of showing the amounts payable to Applied Biosystems
hereunder. Said books of account shall be kept at Digene’s principal place of
business or the principal place of business of the appropriate division of
Digene to which this Agreement relates, or at off-site storage facilities as
consistent with Digene’s document retention procedures. Said books and the
supporting data shall be open for five (5) years following the end of the
fiscal year to which they pertain, to the inspection of Applied Biosystems or
its agents for the purpose of verifying Digene’s royalty statements or
compliance in other respects with this Agreement during Digene’s ordinary
business hours, not more than once in any 12-month period. Should such
inspection lead to the discovery of more than a 10% discrepancy, Digene shall
pay all third party costs incurred by Applied Biosystems related to such
inspection. After such five- (5-) year period, Applied Biosystems shall have
no further right of inspection or investigation with respect to amounts paid to
Applied Biosystems during such fiscal year. In addition, once Applied
Biosystems has exercised its right of inspection hereunder with respect to any
particular fiscal year, Applied Biosystems shall not be entitled to an
additional review of such year once the inspection is completed.

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     3.6 Within forty-five (45) days after each March 31, June 30, September 30
and December 31, Digene shall deliver to Applied Biosystems a report for the
quarter just ended stating: (a) the number of Tests sold (or otherwise disposed
of in a transaction which generated Net Sales) by Digene; (b) Net Sales of
Tests; (c) applicable deductions; (d) total royalties due and payable, and (e)
such other information regarding Digene’s business under this Agreement as
Applied Biosystems shall reasonably request. If no royalties shall be due,
Digene shall so report. “Tests” and “Net Sales” shall have the meanings set
forth on Schedule C.

     3.7 Minimum Annual Purchases are set forth in Schedule A. If Digene fails
to make Minimum Annual Purchases for any applicable fiscal year set forth in
Schedule A, Applied Biosystems may terminate this Agreement as set forth in
Section 5.3(d).

	4.	 	Orders and Shipping

     4.1 Digene shall submit orders at least forty-five (45) days prior to the
requested delivery dates on a purchase order referencing this Agreement.
Digene shall purchase at least the Minimum Annual Purchase amounts per fiscal
year as set forth in Schedule A hereto.

     4.2 Applied Biosystems may specify a different ship date by written notice
within seven (7) days after receipt of an order but otherwise will use
commercially reasonable efforts to ship orders by the requested date. Shipments
shall be in accordance with Digene’s instructions, but unless other written
instructions are provided by Digene, Applied Biosystems will select the common
carrier and shall prepay freight, insurance, and other reasonable and customary
or necessary charges and invoice them to Digene. All Product will be properly
packed. Applied Biosystems shall make reasonable efforts, but not be required
to ship Product earlier than forty-five (45) days after receipt of a purchase
order.

     4.3 The terms and provisions herein shall govern all orders and purchases
notwithstanding any inconsistent or additional terms on purchase orders or
other sales documents and forms, which inconsistent or additional terms shall
have no force or effect whatsoever as between the parties even if Applied
Biosystems might be deemed to have accepted same by reason of its execution or
acknowledgment thereof.

     4.4 In the event Applied Biosystems is unable to supply Product to Digene
or determines that it is unable to do so and such failure to supply continues
for a period of four (4) consecutive months during the term of this Agreement,
thereafter, subject to the terms and conditions of this Section 4.4, Digene
shall have the right to manufacture Product during such time as Applied
Biosystems is unable to supply Product to Digene.

     4.4A Applied Biosystems shall notify Digene in writing as soon as
practicable if Applied Biosystems is unable or anticipates it will be unable to
provide sufficient quantities of Product for any four (4) month period as a
result of a condition described above in this Section 4.4. Upon receipt of
such notification, Digene shall work with Applied Biosystems, if appropriate,
to resolve the failure to supply. If such failure to supply has not been
resolved in the reasonable good faith judgment of Digene, which judgment shall
not be unreasonably withheld,

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within the four (4) month period referred to above, Digene shall have the
right to manufacture for it Product during the period beginning with the first
day after the end of such four (4) month period and ending at such time as
Applied Biosystems notifies Digene in writing in good faith that Applied
Biosystems is able to resume supplying Product to Digene.

     4.4B In the event Digene exercises its right to manufacture Product
pursuant to this Section 4.4, Applied Biosystems shall, solely during the
period during which Digene has a right to manufacture Product pursuant to this
Section 4.4, license to Digene pursuant to “Exhibit B — Terms and Conditions of
License” (the “Terms and Conditions of License”) the Licensed Intellectual
Property Rights (as defined in the Terms and Conditions of License). During
the three month period commencing with the Date of Grant (as such term is
defined in the Terms and Conditions of License), upon Digene’s reasonable
request, Applied Biosystems will provide up to eighty (80) hours of on-site and
telephonic reasonable assistance to Digene in implementing the manufacture of
the Product, at a time or times agreed upon by the parties, to assist Digene in
learning how to manufacture the Product substantially in the manner known to
and used by Applied Biosystems at such time. The parties agree that during
such three (3) month period: (i) Applied Biosystems will devote up to sixty
(60) hours of training on contiguous business days if requested by Digene; and
(ii) Digene’s requests for follow-up assistance shall be requested in no less
than 1 (one) eight (8) hour day increments for on-site assistance. Digene
shall pay Applied Biosystems for such assistance at Applied Biosystems then
commercial rates on a time and materials basis (or if no such rates exist, at
reasonable retail rates), and will reimburse Applied Biosystems for its
reasonable lodging, meal and travel expenses incurred in the performance of
such services, within thirty days of receipt of an invoice therefor. Digene
shall defend, indemnify and hold harmless Applied Biosystems, from and against
any and all claims and liabilities that may arise from the manufacture, supply
or use of Product manufactured by Digene as set forth in the Terms and
Conditions of License. Digene shall use all Licensed Intellectual Property
Rights only for the manufacture of the Product in accordance with this Section
4.4 and not for any other purpose.

     4.4C Notwithstanding any license to Digene granted under Section 4.4B,
Applied Biosystems shall be permitted to cure any condition causing the failure
to supply Product. In the event Applied Biosystems cures any inability to
supply Digene with Product at any time after Digene’s exercise of its right to
manufacture the Product, at Applied Biosystems’ election, Digene shall return
to Applied Biosystems all tangible materials previously transferred pursuant to
this Section, and the license and other rights granted pursuant to Section 4.4B
shall terminate, and Applied Biosystems shall resume the supply of the Product.

     4.5 The parties will use commercially reasonable efforts to comply with
the terms and provisions of “Exhibit A – Quality Terms and Conditions” in all
material respects during the term of this Agreement.

	5.	 	Term and Termination

     5.1 This Agreement shall commence on the date first set forth above and
shall extend until June 30, 2015, subject to earlier termination as provided
herein. The parties may renew this

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Agreement after the initial term or any extended term upon express mutual
agreement in writing (which writing shall designate the expiration date of any
extended term) at least six (6) months prior to the expiration of the initial
term, but if they do not, this Agreement shall automatically expire at the end
of the initial or any renewal term. Notwithstanding the foregoing, Applied
Biosystems may terminate this Agreement effective on any date after June 30,
2011 upon not less than twelve (12) months written notice to Digene if Applied
Biosystems determines that it will no longer manufacture Product for commercial
sale to third parties after the effective date of termination set forth in such
notice; provided that any such termination shall be subject to the provisions
of Section 5.4 hereof.

     5.2 In addition to the renewal rights set forth in Section 5.1, (a) if
prior to sixty (60) days before the end of the initial term or any extended
term of this Agreement Digene offers in a written notice delivered to Applied
Biosystems to extend the term of this Agreement, on the same terms and
conditions as set forth in this Agreement, for a period of at least one year,
and (b) if Applied Biosystems does not accept such offer on or before
the last day of the term of this Agreement in which such notice is delivered to
Applied Biosystems by delivering written notice of acceptance to Digene,
and (c) if at all times during the six month period ending with the last
day of such term Digene offered for commercial sale at least one product that
incorporates both the Product and Digene’s proprietary Hybrid Capture® system
for use in in vitro human diagnostics with respect to which approval for
sale had been obtained from the U.S. Food & Drug Administration (“FDA”), then,
at the expiration of the term of this Agreement, Digene shall acquire from
Applied Biosystems the license described in Section 5.4 hereof, the terms of
which are set forth in the Terms and Conditions of License attached hereto as
Exhibit B, to manufacture the Product. Any such license shall be subject to
the provisions of Section 5.4 hereof and the Terms and Conditions of License.

     5.3 Notwithstanding anything herein contained to the contrary, and in
addition and without prejudice to any other rights or remedies, the parties
shall have the right to terminate this Agreement as follows:

        (a) Applied Biosystems may terminate this Agreement effective
immediately upon written notice if Digene fails to make any payment due
hereunder within ten (10) days after the date such payment was due and
the payment has not been made within twenty (20) days after Applied
Biosystems delivers written notice to Digene of such failure;

        (b) if one party is in material breach of the terms hereof, upon
written notice specifying the breach, provided, however, that if the
first such breach is capable of remedy, termination shall be effective
forty-five (45) days after notice specifying the breach and the remedy
for the breach if the breach shall not have been remedied within such
forty-five (45) day period, and provided further, that the foregoing
provisions permitting cure shall not apply to any breach of Section 1.2,
1.5, 8, 9, or 10 of this Agreement;

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        (c) either party may terminate this Agreement effective immediately
upon written notice if (i) all or a substantial portion of the assets of
the other party are transferred to an assignee for the benefit of
creditors, a receiver, or a trustee in bankruptcy, (ii) a proceeding is
commenced by or against the other party for relief under bankruptcy or
similar laws and such proceeding is not dismissed within thirty (30)
days, (iii) the other party is adjudged insolvent or bankrupt; or (iv) if
the other party shall cease to carry on business; and

        (d) Applied Biosystems may terminate this Agreement upon written
notice to Digene in the event Digene fails to make the Minimum Annual
Purchases set forth on Schedule A for any fiscal year; provided however
that Applied Biosystems shall first notify Digene of its intent to
terminate the Agreement for such purpose and Digene shall then have
forty-five (45) days to order and pay Applied Biosystems for Product
necessary to achieve the Minimum Annual Purchase amount for such fiscal
year, and if Digene does so, Applied Biosystems may not then terminate
this Agreement on the basis of such notice of intent (but all other
rights of termination shall remain in full force and effect). Reference
is made to Section 3.1D for a definition of the term “purchase.” Minimum
Annual Purchases means the purchase by Digene of at least the number of
liters of Product set forth on Schedule A during a twelve month period
beginning July 1.

     5.4 Upon the termination of this Agreement (a) by Applied Biosystems
pursuant to the last sentence of Section 5.1 hereof, (b) by Applied Biosystems’
failing to accept an offer made by Digene to extend the Term of this Agreement
pursuant to Section 5.2 hereof, or (c) by Digene because of (i) an uncured
breach by Applied Biosystems pursuant to Section 5.3(b) hereof, or (ii) the
bankruptcy or insolvency of Applied Biosystems pursuant to Section 5.3(c)
hereof, if requested by Digene in writing either prior to, or in no event later
than sixty (60) days after the effective date of any such expiration or
termination, Digene shall then have a perpetual (except as set forth in the
Terms and Conditions of License), non-exclusive license to and under the
Licensed Intellectual Property Rights (as defined in the Terms and Conditions
of License) to manufacture the Product to include in only Digene products
manufactured by or for Digene that incorporate both the Product and Digene’s
proprietary Hybrid Capture® system for use in in vitro human diagnostics
with respect to which approval for sale had been obtained from the FDA, or
which are then in clinical trials related to an FDA approval process, prior to
such expiration or termination. The Terms and Conditions of License attached
hereto as Exhibit B shall survive any such expiration or termination of this
Agreement if and to the extent Digene is granted such license rights pursuant
to this Agreement and such Terms and Conditions of License.

     5.4A If, pursuant to this Section 5.4, Digene is licensed the Licensed
Intellectual Property Rights pursuant to the Terms and Conditions of License,
during the three (3) month period commencing no later than the date of
expiration or termination of this Agreement and, if reasonably possible, three
(3) months prior to such date of expiration or termination if the provisions of
this Section 5.4 are implicated by the termination of this Agreement pursuant
to the last sentence of Section 5.1 or pursuant to Section 5.2 (for purposes of
this Section 5.4, the “Date of Grant”), upon Digene’s reasonable request,
Applied Biosystems will provide up to eighty (80)

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hours of reasonable assistance to Digene in implementing the manufacture
of the Product, at a time or times agreed upon by the parties, to assist Digene
in learning how to manufacture the Product substantially in the manner known to
and used by Applied Biosystems at such time. The parties agree that: (i)
Applied Biosystems will devote up to sixty (60) hours of training on contiguous
business days if requested by Digene and (ii) Digene requests for follow-up
assistance shall be requested in not less than one (1) eight (8) hour day
increments for on-site assistance. Digene shall pay Applied Biosystems for
such assistance at Applied Biosystems then commercial rates on a time and
materials basis (or if no such rates exist, at reasonable retail rates), and
will reimburse Applied Biosystems for its reasonable lodging, meal and travel
expenses incurred in the performance of such services, within thirty days of
receipt of an invoice therefor.

     5.4B Digene shall defend, indemnify and hold harmless Applied Biosystems,
from and against any and all claims and liabilities that may arise from the
manufacture, supply or use of Products manufactured by Digene as set forth in
the Terms and Conditions of License.

     5.4C Digene shall use all Licensed Intellectual Property Rights only for
the manufacture of the Product in accordance with this Section 5.4 and the
Terms and Conditions of License, and not for any other purpose. In addition,
and without limiting the foregoing, Digene shall have the right, prior to any
expiration or termination of this Agreement, to provide Applied Biosystems with
a forecast of Digene’s expected requirements of the Product for use during the
period between the expiration or termination of this Agreement and Digene’s
receipt of the necessary validation from the FDA to manufacture the Product
pursuant to the foregoing license. Applied Biosystems shall use commercially
reasonable efforts to deliver Product to meet such forecast prior to expiration
or termination of the Agreement and Digene shall pay for such Product pursuant
to this Agreement. All information that Digene receives from Applied
Biosystems is Proprietary Information and can only be used by Digene and only
for the purposes of manufacturing Product by Digene for use with Digene
products in compliance with the terms of this Agreement.

     5.5 The parties each acknowledge that, except as contemplated by Section
5.4 and the Terms and Conditions of License, this Agreement shall, unless the
parties mutually agree otherwise, continue only until the expiration of the
term. With such knowledge in mind, Digene has agreed to the pricing structure
provided for in this Agreement as full, fair and sufficient compensation for
all efforts and services to be performed by Applied Biosystems. Accordingly,
in the event of termination or expiration in accordance with this Agreement
neither party shall be entitled to any indemnity, compensation, damages, loss
of profits or prospective profits, or payment in respect of investments made or
goodwill or clientele established during the continuance of this Agreement.

     5.6 The obligations and covenants of Digene under Sections 3.5, 6.5, 8, 9,
10 and 12, and the obligation of Digene to make payments pursuant to Section 3
for Product delivered or Net Sales of Tests made prior to termination or
expiration of this Agreement, or to pay royalties pursuant to the Terms and
Conditions of License, shall not be affected by termination or expiration of
this Agreement. The obligations and covenants of Applied Biosystems under

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Sections 4.4, 5.1, 5.2 and 5.4 (in each event, to the extent applicable
post termination or expiration), 6, 10 and 12 shall not be affected by
termination or expiration of this Agreement.

	6.	 	Applied Biosystems Limited Product Warranties

     6.1 Applied Biosystems sole warranties are that each Product supplied to
Digene will, for the period specified in the official applicable Product
Specifications set forth in Schedule D hereof, conform in all material respects
to the Product Specifications. Applied Biosystems will provide a Certificate
of Analysis with each shipment. Applied Biosystems makes the foregoing
warranties to and for the benefit of Digene only, and they may not be assigned
to any other party.

     6.2 If any Product does not conform with the foregoing warranties, Applied
Biosystems sole obligation and Digene’s sole remedy with respect thereto shall
be to replace such Product without charge or expense to Digene or, at Applied
Biosystems option, to credit Digene for the amount paid by Digene to Applied
Biosystems for such Product.

     6.3 The above warranties are contingent upon the proper use, storage and
shipment of the Product and shall be void with respect to defects or failures
due to disaster, accident, neglect, misuse, or improper storage or shipment (in
each case not attributable to Applied Biosystems).

     6.4 EXCEPT AS EXPRESSLY SET FORTH IN SECTION 6.1, THERE ARE NO WARRANTIES,
EXPRESS OR IMPLIED, BY OPERATION OF LAW OR OTHERWISE, WITH RESPECT TO THE
PRODUCTS, AND APPLIED BIOSYSTEMS EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES AND
WARRANTIES ARISING BY OPERATION OF LAW INCLUDING BUT NOT LIMITED TO ANY
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. NO
REPRESENTATION OR OTHER AFFIRMATION OF FACT, INCLUDING BUT NOT LIMITED TO
STATEMENTS REGARDING CAPACITY, SUITABILITY FOR USE OR PERFORMANCE OF PRODUCTS,
WHETHER MADE BY APPLIED BIOSYSTEMS EMPLOYEES OR OTHERWISE, WHICH IS NOT
CONTAINED IN THIS AGREEMENT SHALL BE DEEMED TO BE A WARRANTY BY APPLIED
BIOSYSTEMS FOR ANY PURPOSE OR GIVE RISE TO ANY LIABILITY OF APPLIED BIOSYSTEMS
WHATSOEVER. WITHOUT LIMITATION OF THE FOREGOING, APPLIED BIOSYSTEMS IS NOT
EXTENDING ANY REPRESENTATION OR WARRANTY THAT THE PRODUCTS, ALONE OR IN
COMBINATION WITH OTHER PRODUCTS, WILL NOT INFRINGE THE PATENTS OR OTHER RIGHTS
OF THIRD PARTIES. IN NO EVENT SHALL APPLIED BIOSYSTEMS BE LIABLE FOR INDIRECT,
INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES, INCLUDING WITHOUT LIMITATION LOST
BUSINESS PROFITS, REGARDLESS WHETHER THE ACTION IS IN CONTRACT, TORT (INCLUDING
NEGLIGENCE), BREACH OF WARRANTY OR OTHERWISE, EVEN IF APPLIED BIOSYSTEMS HAS
BEEN ADVISED AS TO THE POSSIBILITY THEREOF.

     6.5 If Digene makes any warranty or representation inconsistent with or in
addition to the foregoing warranties or any Product instructions, Digene shall
defend and hold Applied Biosystems harmless from any claim to the extent based
thereon.

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     6.6 Applied Biosystems shall maintain policies of comprehensive general
liability insurance, including product liability insurance, with limits of at
least Five Million Dollars ($5,000,000).

	7.	 	Digene Warranties and Agreements

     7.1 Digene warrants, represents, and agrees that it is solely responsible
for complying with all applicable Federal, state, local and foreign laws,
regulations and directives including, but not limited to, the Federal Food Drug
and Cosmetic Act and the regulations promulgated thereunder, as such laws and
regulations apply to Digene’s storage, sale, use, labeling, shipment, or
distribution of in vitro diagnostic tests incorporating Product. Digene
acknowledges and agrees that it is solely liable for the advertising,
promotion, and sale of Product, and warrants that all such efforts shall be in
compliance with all applicable Federal, state, local and foreign laws,
regulations and directives.

     7.2 Digene warrants that it possesses the capability to qualify the
suitability of Product for use in in vitro diagnostic tests. In so
warranting, Digene acknowledges that it is solely responsible for qualifying
and validating the suitability of Product for any use in diagnostic tests that
Digene may develop from time to time. Digene further acknowledges that Applied
Biosystems, by having provided Product to Digene under this Agreement, has in
no way agreed to, endorsed or otherwise approved of Digene’s determination that
Product is in any way suitable for use in any such diagnostic tests developed,
advertised, promoted, sold or distributed by Digene.

	8.	 	Trademarks and Trade Names

     8.1 Subject to Section 8.2, Applied Biosystems grants to Digene a
non-exclusive right to use the Marks, trade names and logos that Applied
Biosystems may adopt from time to time with respect to the Product (“Applied
Biosystems Marks”) in connection with Digene’s sale and distribution of
Product. Digene will indicate clearly in any and all materials in which Tests
utilizing the Product are advertised, marketed, sold or otherwise distributed
that such Tests utilize Product obtained by Digene from Applied Biosystems.
Except as set forth in this Section 8, nothing contained in this Agreement will
grant to Digene any right, title or interest in Applied Biosystems Marks.
Digene recognizes the validity of Applied Biosystems Marks and acknowledges the
same are the property of Applied Biosystems. At no time during or after the
term of this Agreement will Digene challenge or assist others to challenge
Applied Biosystems Marks or the registration thereof or attempt or assist
others to attempt to register any trademarks, marks, trade names or logos
confusingly similar to those of Applied Biosystems.

     8.2 All representations of Applied Biosystems Marks that Digene intends to
use will first be submitted to Applied Biosystems for approval (which will not
be unreasonably withheld) of design, color, and other details or will be exact
copies of those used by Applied Biosystems. In addition, Digene shall follow
the instructions issued by Applied Biosystems from time to time for the purpose
of protecting the standards of quality established for the goods and services
sold under Applied Biosystems Marks.

11

 

     8.3 Digene acknowledges and agrees that the use of Applied Biosystems
Marks as set forth in Section 8.1, and any review or approval by Applied
Biosystems as set forth in Section 8.2 do not represent the endorsement or
approval by Applied Biosystems of Digene’s storage, sale, use, labeling,
shipment, promotion, or distribution of Product, in any form. Digene agrees
that nothing in this Section 8 in any way affects or alters its responsibility
for complying with all applicable laws and regulations, as set forth in Section
7.1 hereof.

	9.	 	Patent Marking

     Digene shall properly affix the statutory patent notice as set forth in
Schedule E to all Product or, where that is impractical, to labels or boxes for
such Product. Digene may deplete its current inventory of labels for such
Product (which include patent markings) before implementing the statutory
patent notice as set forth in Schedule E.

	10.	 	Confidential Information

     Each party shall treat accordingly all verbal and written communications
from the other party which are designated, or which should reasonably be
regarded, in the normal commercial view, as constituting business secrets or
proprietary information (“Proprietary Information”). Each party shall refrain
from using, disclosing or making available to any third party any of the other
party’s Proprietary Information except for the purposes of implementing this
Agreement and shall impose upon its employees and agents the same obligations
with respect to the other party’s Proprietary Information as it employs with
respect to its own confidential information but in no event shall such
obligations be less than what is reasonable in accordance with good commercial
practice. No such obligations of confidence shall extend to information which
(a) is publicly available through no fault of the receiving party; (b) is
already in the receiving party’s possession; (c) is rightfully received from a
third party; or (d) is required by law to be disclosed, but solely to the
extent of such requirement, and in such event, the party required to disclose
shall identify information so disclosed as the confidential information of the
other party, shall give written notice of such requirement to the other party
as long as possible prior to such disclosure, and shall use all reasonable
efforts to cause, or to assist the other party to cause, such government,
agency or organization to protect such information as confidential.

	11.	 	Notices

     Any notice under this Agreement or provided for in this Agreement shall be
in English and shall be effective when delivered to the address of such party
set out above (or to such other address as either party may specify by notice
given to the other party), addressed in the case of Applied Biosystems to:

12

 

David Hicks

Senior Director

Cell Biology and Functional Proteomics

Applied Biosystems

500 Old Connecticut Path

Framingham, MA 01701

with a copy to

Applied Biosystems Legal Liaison

Applied Biosystems

35 Wiggins Avenue

Bedford, MA 01730

in the case of Digene to:

	 	 	 
	Evan Jones

	 	General Counsel
	President & CEO

	 	Morris Cheston, Jr.
	Digene Corporation

	 	Ballard Spahr Andrews & Ingersoll, LLP
	1201 Clopper Road

	 	1735 Market Street, 51st Floor
	Gaithersburg, Maryland 20878

	 	Philadelphia, Pennsylvania 19103

	12.	 	Dispute Resolution

     Any dispute relating to the interpretation, performance, or damages
resulting from improper termination, of this Agreement shall be resolved, at
either party’s written request, through final, binding arbitration; provided,
however, that nothing contained herein shall be construed to prevent either
party from terminating this Agreement or from bringing an action in any court
of competent jurisdiction to compel the other party to comply with orders or
awards of the arbitrator(s) in the nature of injunctive or provisional relief
during the pendency of the arbitration proceedings. Such arbitration shall be
conducted in Boston, Massachusetts, in accordance with the Commercial
Arbitration Rules and (if applicable) Supplementary Procedures for
International Commercial Arbitration, both as modified from time to time, of
the American Arbitration Association (“AAA”). The arbitrator (or at least one
of the arbitrators if there are three) shall be an experienced business
attorney skilled in the subject matter of the dispute. The arbitrator(s) shall
assess the fees and expenses of the AAA and the arbitrator(s) between the
parties in such proportions as the arbitrator(s) deem equitable. Punitive
damages (including multiple damages) may not be awarded in any arbitration
hereunder. If judicial enforcement or review of the arbitrator(s)’ award is
sought by either party, judgment may be entered upon such award in any court of
competent jurisdiction.

	13.	 	Miscellaneous

     13.1 All obligations of Applied Biosystems under this Agreement shall be
subject to the U.S. export laws, and Applied Biosystems shall not be liable for
any failure to perform hereunder if such performance is at that time prohibited
by the U.S. export laws.

13

 

     13.2 If Digene learns of any infringement of Applied Biosystems patents,
Applied Biosystems Marks or other intellectual property rights associated with
the Product, Digene shall promptly inform Applied Biosystems in writing of all
known information relating thereto and shall cooperate fully with Applied
Biosystems, at Applied Biosystems’ expense, in any reasonable efforts
undertaken by Applied Biosystems to challenge or prosecute such infringement.

     13.3 This Agreement may not be assigned or transferred by Digene without
the prior written consent of Applied Biosystems; provided, however, that the
foregoing shall not be deemed to prohibit any assignment of this Agreement by
Digene in connection with a sale or other transfer of all or a substantial
portion of its business relating to any Product or to a corporation or other
entity into which Digene is merged or consolidated, provided that Digene gives
Applied Biosystems not less than thirty (30) days prior written notice.

     13.4 No modification or waiver of any terms or conditions hereof shall be
of any force or effect unless in writing and signed by each party’s authorized
officer. Either party’s failure to enforce any provision shall not be deemed to
be a waiver of such provision or such party’s right thereafter to enforce such
provision.

     13.5 Digene shall act as an independent contractor and shall not be deemed
to be an employee, agent, or legal representative of Applied Biosystems for any
purpose hereunder. Digene shall not be entitled to enter into any contracts in
the name of or on behalf of Applied Biosystems, nor to pledge the credit of
Applied Biosystems in any way or hold itself out as having authority to do so.

     13.6 This Agreement, along with the attachments referenced herein,
embodies the final, complete and exclusive understanding between the parties,
and supersedes all previous agreements, understandings and arrangements between
the parties with respect to the subject matter contained herein.

     13.7 If any provision of this Agreement is held illegal, invalid or
unenforceable, all other provisions hereof shall remain in full force and
effect as if such provision were not a part hereof.

     13.8 Except as otherwise specifically provided herein, this Agreement
shall be governed by and construed according to the laws of Massachusetts,
U.S.A., excluding both its choice of law provisions and the United Nations
Convention on Contracts for the International Sale of Goods. The official text
of the Agreement and any Schedules, and any notices given or accounts or
statements required hereby shall be in English.

     13.9 Except as otherwise provided herein, if the performance of this
Agreement or any obligation hereunder (other than the making of payments
hereunder) is prevented, restricted or interfered with by reason of any event,
act or condition beyond the reasonable control of the affected party, the party
so affected, upon written notice to the other party, shall be excused from such
performance to the extent of such prevention, restriction or interference.

14

 

     13.10 The headings and captions in this Agreement are for convenience only
and are not part of this Agreement.

     13.11 The following attachments are incorporated in and made a part of
this Agreement:

	(i)	 	Schedule A: Product and Minimum Annual Purchase
Requirements
	 
	(ii)	 	Schedule B: Prices and Royalties
	 
	(iii)	 	Schedule C: Definitions
	 
	(iv)	 	Schedule D: Product Specifications
	 
	(v)	 	Schedule E: Statutory Patent Notice
	 
	(vi)	 	Exhibit A: Quality Terms and Conditions
	 
	(vii)	 	Exhibit B: Terms and Conditions of License

     IN WITNESS WHEREOF, the undersigned have executed and delivered this
Agreement by their duly authorized representatives as of the date first shown
above.

	 	 	 
	APPLERA CORPORATION,

	 	DIGENE CORPORATION
	acting through its Applied Biosystems
	 	 
	Group
	 	 

	 	 	 
	By: /s/ Laura Lauman

	 	By: /s/ Evan Jones
	 
	 	 
	Name: Laura Lauman 

	 	Name: Evan Jones 
	 
	 	 
	Title: Vice President 

	 	Title:  Chairman & CEO 
	 
	 	 
	Date: December 13, 2003 

	 	Date:  December 8, 2003 
	 
	 	 

15<PAGE>

                                                                     EXHIBIT 4.1

================================================================================

                                CREDIT AGREEMENT

                                      among

                       [CONSTRUCTION PRODUCTS, INC. LOGO]

                                  as Borrower,

                              [JPMORGANCHASE LOGO]

                              JPMORGAN CHASE BANK,
                      as Administrative Agent and a Lender,

                                       and

                             BANK OF AMERICA, N.A.,
                                 PNC BANK, N.A.,
                                       and
                                  BANK ONE, NA,
                                       as
                              Co-Syndication Agents
                                   and Lenders

                                       and
                                 SUNTRUST BANK,
                             as Documentation Agent
                                  and a Lender

                                       and

                the other Lenders from time to time party hereto

                                18 December 2003

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

                          J.P. MORGAN SECURITIES INC.,
                    as Sole Bookrunner and Sole Lead Arranger

================================================================================

<PAGE>

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                              Page #
                                                                                              ------
<S>                                                                                           <C>
ARTICLE I.      DEFINITIONS..............................................................        1

   Section 1.01.    Defined Terms........................................................        1
   Section 1.02.    Classification of Loans and Borrowings...............................       15
   Section 1.03.    Terms Generally......................................................       15
   Section 1.04.    Accounting Terms; GAAP...............................................       16

ARTICLE II.     THE CREDITS..............................................................       16

   Section 2.01.    Commitments..........................................................       16
   Section 2.02.    Loans and Borrowings.................................................       16
   Section 2.03.    Requests for Revolving Borrowings....................................       17
   Section 2.04.    Swingline Loans......................................................       17
   Section 2.05.    Letters of Credit....................................................       18
   Section 2.06.    Funding of Borrowings................................................       22
   Section 2.07.    Interest Elections...................................................       23
   Section 2.08.    Termination and Reduction of Commitments.............................       24
   Section 2.09.    Repayment of Loans; Evidence of Debt.................................       24
   Section 2.10.    Prepayment of Loans..................................................       25
   Section 2.11.    Fees.................................................................       25
   Section 2.12.    Interest.............................................................       26
   Section 2.13.    Alternate Rate of Interest...........................................       27
   Section 2.14.    Increased Costs......................................................       27
   Section 2.15.    Break Funding Payments...............................................       28
   Section 2.16.    Taxes................................................................       29
   Section 2.17.    Payments Generally; Pro Rata Treatment; Sharing of Set-offs..........       30
   Section 2.18.    Mitigation Obligations; Replacement of Lenders.......................       31

ARTICLE III.    REPRESENTATIONS AND WARRANTIES...........................................       32

   Section 3.01.    Organization; Powers.................................................       32
   Section 3.02.    Authorization; Enforceability........................................       32
   Section 3.03.    Governmental Approvals; No Conflicts.................................       32
   Section 3.04.    Financial Condition; No Material Adverse Change......................       32
   Section 3.05.    Properties...........................................................       33
   Section 3.06.    Litigation and Environmental Matters.................................       33
   Section 3.07.    Compliance with Laws and Agreements..................................       33
   Section 3.08.    Investment and Holding Company Status................................       34
   Section 3.09.    Taxes................................................................       34
   Section 3.10.    ERISA................................................................       34
   Section 3.11.    Disclosure...........................................................       34
   Section 3.12.    Subsidiaries.........................................................       34
   Section 3.13.    Indebtedness.........................................................       34
   Section 3.14.    Solvency.............................................................       34
   Section 3.15.    Margin Securities....................................................       35
</TABLE>

TABLE OF CONTENTS, Page i of iii

<PAGE>

<TABLE>
<S>                                                                                             <C>
ARTICLE IV.     CONDITIONS...............................................................       35

   Section 4.01.    Effective Date.......................................................       35
   Section 4.02.    Each Credit Event....................................................       36
   Section 4.03.    Special Dividend.....................................................       36

ARTICLE V.      AFFIRMATIVE COVENANTS....................................................       37

   Section 5.01.    Financial Statements; Ratings Change and Other Information...........       37
   Section 5.02.    Notices of Material Events...........................................       38
   Section 5.03.    Existence; Conduct of Business.......................................       38
   Section 5.04.    Payment of Obligations...............................................       38
   Section 5.05.    Maintenance of Properties; Insurance.................................       39
   Section 5.06.    Books and Records; Inspection Rights.................................       39
   Section 5.07.    Compliance with Laws and Agreements..................................       39
   Section 5.08.    Use of Proceeds......................................................       39
   Section 5.09.    Joinder of Subsidiaries to Subsidiary Guaranty.......................       39
   Section 5.10.    Further Assurances...................................................       40
   Section 5.11.    Receivables Securitization...........................................       40

ARTICLE VI.     NEGATIVE COVENANTS.......................................................       40

   Section 6.01.    Indebtedness.........................................................       40
   Section 6.02.    Liens................................................................       42
   Section 6.03.    Fundamental Changes; Sale of Assets..................................       43
   Section 6.04.    Investments, Loans, Advances, Guaranties and Acquisitions............       44
   Section 6.05.    Swap Agreements......................................................       46
   Section 6.06.    Restricted Payments; Prepayments of Indebtedness.....................       46
   Section 6.07.    Transactions with Affiliates.........................................       48
   Section 6.08.    Restrictive Agreements...............................................       48
   Section 6.09.    Interest Coverage Ratio..............................................       49
   Section 6.10.    Leverage Ratio.......................................................       49
   Section 6.11.    Minimum Tangible Net Worth...........................................       49
   Section 6.12.    Sale and Lease-Back Transactions.....................................       49

ARTICLE VII.    EVENTS OF DEFAULT........................................................       49

ARTICLE VIII.   THE ADMINISTRATIVE AGENT.................................................       51

ARTICLE IX.     MISCELLANEOUS............................................................       53

   Section 9.01.    Notices..............................................................       53
   Section 9.02.    Waivers; Amendments..................................................       54
   Section 9.03.    Expenses; Indemnity; Damage Waiver...................................       54
   Section 9.04.    Successors and Assigns...............................................       56
   Section 9.05.    Survival.............................................................       58
   Section 9.06.    Counterparts; Integration; Effectiveness.............................       59
   Section 9.07.    Severability.........................................................       59
   Section 9.08.    Right of Setoff......................................................       59
   Section 9.09.    Governing Law; Jurisdiction; Consent to Service of Process...........       59
   Section 9.10.    WAIVER OF JURY TRIAL.................................................       60
   Section 9.11.    Headings.............................................................       60
</TABLE>

TABLE OF CONTENTS, Page ii of iii

<PAGE>

<TABLE>
<S>                                                                                             <C>
   Section 9.12.    Confidentiality......................................................       60
   Section 9.13.    Maximum Interest Rate................................................       61
   Section 9.14.    No Fiduciary Relationship............................................       62
   Section 9.15.    Construction.........................................................       62
   Section 9.16.    Independence of Covenants............................................       62
</TABLE>

TABLE OF CONTENTS, Page iii of iii

<PAGE>

                         LIST OF SCHEDULES AND EXHIBITS

Schedules:

Schedule 1.01(a)    -    Existing Letters of Credit
Schedule 2.01       -    Commitments
Schedule 3.05       -    Existing Liens
Schedule 3.06       -    Disclosed Matters
Schedule 3.12       -    Subsidiaries
Schedule 3.13       -    Existing Indebtedness
Schedule 6.04       -    Existing Investments
Schedule 6.08       -    Existing Restrictions

Exhibits:

Exhibit A           -    Form of Assignment and Assumption
Exhibit B           -    Form of Opinion of Borrower's Counsel
Exhibit C           -    Form of Guaranty Agreement
Exhibit D           -    Form of Notice of Borrowing

LIST OF SCHEDULES AND EXHIBITS, Solo Page

<PAGE>

         CREDIT AGREEMENT (this "Agreement") dated as of December 18, 2003,
among CENTEX CONSTRUCTION PRODUCTS, INC., as the Borrower, the LENDERS party
hereto, and JPMORGAN CHASE BANK, as Administrative Agent.

         The parties hereto agree as follows:

                                   ARTICLE I.

                                   Definitions

         Section 1.01. Defined Terms. As used in this Agreement, the following
terms have the meanings specified below:

                  "ABR", when used in reference to any Loan or Borrowing, refers
to whether such Loan, or the Loans comprising such Borrowing, are bearing
interest at a rate determined by reference to the Alternate Base Rate.

                  "Acquisition" means any transaction, or any series of related
transactions, by which the Borrower or any of the Subsidiaries (i) acquires any
going business or all or substantially all of the assets of any Person or
division or business unit thereof, whether through purchase of assets, merger or
otherwise or (ii) directly or indirectly acquires (in one transaction or as the
most recent transaction in a series of transactions) 50% or more (in number of
votes) of the Equity Interests of a Person having ordinary voting power for the
election of the board of directors or other applicable governing body (other
than securities having such power only by reason of the happening of a
contingency) or 50% or more (by percentage or voting power) of the outstanding
Equity Interests of a partnership or limited liability company.

                  "Adjusted LIBO Rate" means, with respect to any Eurodollar
Borrowing for any Interest Period, an interest rate per annum (rounded upwards,
if necessary, to the next 1/16 of 1%) equal to (a) the LIBO Rate for such
Interest Period multiplied by (b) the Statutory Reserve Rate.

                  "Adjusted Net Income" has the meaning assigned to such term in
the definition of the term "Consolidated EBITDA".

                  "Administrative Agent" means JPMorgan Chase Bank, in its
capacity as administrative agent for the Lenders hereunder.

                  "Administrative Questionnaire" means an Administrative
Questionnaire in a form supplied by the Administrative Agent.

                  "Affiliate" means, with respect to a specified Person, another
Person that directly, or indirectly through one or more intermediaries, Controls
or is Controlled by or is under common Control with the Person specified.

                  "Alternate Base Rate" means, for any day, a rate per annum
equal to the greatest of (a) the Prime Rate in effect on such day, and (b) the
Federal Funds Effective Rate in effect on such day plus 1/2 of 1%. Any change in
the Alternate Base Rate due to a change in the Prime Rate or the Federal Funds
Effective Rate shall be effective from and including the effective date of such
change in the Prime Rate or the Federal Funds Effective Rate, respectively.

                  "Applicable Percentage" means, with respect to any Lender, the
percentage of the total Commitments represented by such Lender's Commitment. If
the Commitments have terminated or

CREDIT AGREEMENT, Page 1

<PAGE>

expired, the Applicable Percentages shall be determined based upon the
Commitments most recently in effect, giving effect to any assignments.

                  "Applicable Rate" means, for any day, with respect to any ABR
Loan or Eurodollar Revolving Loan, or with respect to the commitment fees
payable hereunder, as the case may be, the applicable rate per annum set forth
below under the caption "ABR Spread", "Eurodollar Spread" or "Commitment Fee
Rate", as the case may be, opposite the category in the table below which
corresponds with the actual Leverage Ratio as of the most recent determination
date; provided that from and including the Effective Date until the first date
that the Applicable Rate is determined as set forth below in this definition,
the "Applicable Rate" shall be the applicable rate per annum set forth below in
Category 2:

<TABLE>
<CAPTION>
                        Eurodollar                                  Commitment
Leverage Ratio            Spread          ABR Spread                 Fee Rate
------------------------------------------------------------------------------
<S>                     <C>               <C>                       <C>
     Category 1           1.25%             0.25%                     0.300%
  <1.00 to 1.00
------------------------------------------------------------------------------
     Category 2           1.50%             0.50%                     0.350%
> or =1.00 to 1.00
        but
  < 1.50 to 1.00
------------------------------------------------------------------------------
     Category 3           1.75%             0.75%                     0.400%
> or =1.50 to 1.00
        but
  < 2.00 to 1.00
------------------------------------------------------------------------------
     Category 4           2.00%             1.00%                     0.400%
> or =2.00 to 1.00
------------------------------------------------------------------------------
</TABLE>

                  For purposes of the foregoing, (i) the Leverage Ratio shall be
determined as of the end of each fiscal quarter of the Borrower's fiscal year
based upon the Borrower's consolidated financial statements delivered pursuant
to Section 5.01(a) or (b), beginning with the fiscal quarter ended December 31,
2003 and (ii) each change in the Applicable Rate resulting from a change in the
Leverage Ratio shall be effective during the period commencing on and including
the date of delivery to the Administrative Agent of such consolidated financial
statements indicating such change and ending on the date immediately preceding
the effective date of the next such change; provided that the Leverage Ratio
shall be deemed to be in Category 4: (A) at any time that an Event of Default
has occurred and is continuing or (B) at the option of the Administrative Agent
or at the request of the Required Lenders, if the Borrower fails to deliver the
consolidated financial statements required to be delivered by it pursuant to
Section 5.01(a) or (b), during the period from the expiration of the time for
delivery thereof until such consolidated financial statements are delivered.

                  "Approved Fund" has the meaning assigned to such term in
Section 9.04.

                  "Assignment and Assumption" means an Assignment and Assumption
entered into by a Lender and an assignee (with the consent of any party whose
consent is required by Section 9.04), and accepted by the Administrative Agent,
in the form of Exhibit A or any other form approved by the Administrative Agent.

                  "Availability Period" means the period from and including the
Effective Date to but excluding the earlier of the Maturity Date and the date of
termination of the Commitments.

                  "Board" means the Board of Governors of the Federal Reserve
System of the United States of America.

                  "Borrower" means Centex Construction Products, Inc., a
Delaware corporation.

CREDIT AGREEMENT, Page 2

<PAGE>

                  "Borrowing" means (a) Revolving Loans of the same Type, made,
converted or continued on the same date and, in the case of Eurodollar Loans, as
to which a single Interest Period is in effect or (b) a Swingline Loan.

                  "Borrowing Request" means a request by the Borrower for a
Revolving Borrowing in accordance with Section 2.03 and in substantially the
form of Exhibit D hereto.

                  "Business Day" means any day that is not a Saturday, Sunday or
other day on which commercial banks in Dallas, Texas and New York, New York are
authorized or required by law to remain closed; provided that, when used in
connection with a Eurodollar Loan, the term "Business Day" shall also exclude
any day on which banks are not open for dealings in dollar deposits in the
London interbank market.

                  "Capital Lease Obligations" of any Person means the
obligations of such Person to pay rent or other amounts under any lease of (or
other arrangement conveying the right to use) real or personal property, or a
combination thereof, which obligations are required to be classified and
accounted for as capital leases on a balance sheet of such Person under GAAP,
and the amount of such obligations shall be the capitalized amount thereof
determined in accordance with GAAP.

                  "Cash Collateral Account" has the meaning assigned to such
term in Section 2.05(j).

                  "Centex" means Centex Corporation.

                  "Change in Control" means (a) the acquisition by any party, or
two or more parties acting in concert, of beneficial ownership (within the
meaning of Rule 13d-3 of the Securities and Exchange Commission under the
Securities Exchange Act of 1934) of 50% or more of the outstanding shares of the
stock of the Borrower entitled to elect 50% or more of the members of the board
of directors of the Borrower, excluding however, the acquisition of the common
stock of the Borrower by the shareholders of Centex in connection with the
Spin-Off, or (b) during any period of twelve consecutive months, a majority of
the members of the board of directors or other equivalent governing body of the
Borrower cease to be composed of individuals (i) who were members of that board
or equivalent governing body on the first day of such period, (ii) whose
election or nomination to that board or equivalent governing body was approved
by individuals referred to in clause (i) above constituting at the time of such
election or nomination at least a majority of that board or equivalent governing
body, or (iii) whose election or nomination to that board or other equivalent
governing body was approved by individuals referred to in clauses (i) and (ii)
above constituting at the time of such election or nomination at least a
majority of that board or equivalent governing body (excluding, in the case of
both clause (ii) and clause (iii), any individual whose initial nomination for,
or assumption of office as, a member of that board or equivalent governing body
occurs as a result of an actual or threatened solicitation of proxies or
consents for the election or removal of one or more directors by any Person or
group other than a solicitation for the election of one or more directors by or
on behalf of the board of directors).

                  "Change in Law" means (a) the adoption of any law, rule or
regulation after the date of this Agreement, (b) any change in any law, rule or
regulation or in the interpretation or application thereof by any Governmental
Authority after the date of this Agreement or (c) compliance by any Lender or
any Issuing Bank (or, for purposes of Section 2.14(b), by any lending office of
such Lender or by such Lender's or an Issuing Bank's holding company, if any)
with any request, guideline or directive (whether or not having the force of
law) of any Governmental Authority made or issued after the date of this
Agreement.

                  "Class", when used in reference to any Loan or Borrowing,
refers to whether such Loan, or the Loans comprising such Borrowing, are
Revolving Loans or Swingline Loans.

CREDIT AGREEMENT, Page 3

<PAGE>

                  "Code" means the Internal Revenue Code of 1986, as amended
from time to time.

                  "Commitment" means, with respect to each Lender, the
commitment of such Lender to make Revolving Loans and to acquire participations
in Letters of Credit and Swingline Loans hereunder, expressed as an amount
representing the maximum aggregate amount of such Lender's Revolving Credit
Exposure hereunder, as such commitment may be (a) reduced from time to time
pursuant to Section 2.08 and (b) reduced or increased from time to time pursuant
to assignments by or to such Lender pursuant to Section 9.04. The initial amount
of each Lender's Commitment is set forth on Schedule 2.01 or in the Assignment
and Assumption pursuant to which such Lender shall have assumed its Commitment.
The initial aggregate amount of the Lenders' Commitments is $250,000,000.00.

                  "Consolidated EBIT" means, for any period, the sum of
Consolidated EBITDA for such period minus depreciation and amortization for such
period, all calculated for the Borrower and the Subsidiaries on a consolidated
basis.

                  "Consolidated EBITDA" means, with respect to any Person and
any period, the sum of the following calculated for such Person on a
consolidated basis:

                  (a)      the total of: (i) its Consolidated Net Income minus;
(ii) the income (or plus the loss) of any third party (other than a subsidiary
of the Person) in which the Person or a subsidiary of such Person has an
ownership interest; plus (iii) the income of any such third party to the extent
actually received in cash by the Person or a subsidiary of such Person in the
form of dividends or similar distributions (the amount determined in accordance
with this clause (a), herein the "Adjusted Net Income"); plus

                  (b)      to the extent deducted from revenues in determining
Adjusted Net Income: (i) its Consolidated Interest Expense; (ii) expense for
taxes paid or accrued; (iii) depreciation; (iv) amortization; and (v)
extraordinary non-cash losses incurred other than in the ordinary course of
business; minus

                  (c)      to the extent included in its Adjusted Net Income,
extraordinary, nonrecurring or other nonoperating income or gains.

Notwithstanding anything herein to the contrary, but without duplication, the
Borrower's Consolidated EBITDA for any period shall: (i) include, to the extent
the following can be determined from audited financial statements delivered to
the Administrative Agent and to the extent not already included in the
Borrower's Consolidated EBITDA for such period: (a) in the case of an
Acquisition of Equity Interests in a Person, the Consolidated EBITDA of such
Person for the portion of the calculation period before it became a Subsidiary
and (b) in the case of an Acquisition of assets, the Consolidated EBITDA
associated with such acquired assets for the portion of the calculation period
before such acquisition by the Borrower or any Subsidiary and (ii) exclude: (a)
in the case of a disposition of Equity Interests in a Person, the Consolidated
EBITDA of such Person for the portion of the calculation period after it is
directly or indirectly disposed of and (b) in the case of a disposition of
assets, the Consolidated EBITDA associated with such assets for the portion of
the calculation period after such assets were disposed of.

                  "Consolidated Indebtedness" means, at any time, the
Indebtedness of the Borrower and the Subsidiaries calculated on a consolidated
basis as of such time, excluding however, any Indebtedness under Swap Agreements
that is not then due.

                  "Consolidated Interest Expense" means, with reference to any
period and any Person, the interest expense and preferred stock dividends of
such Person calculated on a consolidated basis for such period.

CREDIT AGREEMENT, Page 4

<PAGE>

                  "Consolidated Net Income" means, with reference to any period
and any Person, the net income (or loss) of such Person calculated on a
consolidated basis for such period.

                  "Consolidated Net Worth" means, at any time, the consolidated
stockholders' equity of the Borrower and the Subsidiaries calculated on a
consolidated basis as of such time.

                  "Consolidated Tangible Net Worth" means, at any time, the
Consolidated Net Worth, minus (a) any intangible assets, including, without
limitation, patents, patent rights, trademarks, trade names, franchises,
copyrights, goodwill, and other similar intangible assets of the Borrower and
the Subsidiaries calculated on a consolidated basis as of such time, minus (b)
any non-cash gain (or plus any non-cash loss, as applicable) resulting from any
mark-to-market adjustments made directly to Consolidated Net Worth as a result
of fluctuations in the value of financial instruments owned by the Borrower or
any of the Subsidiaries as mandated under Financial Accounting Standards Board
Statement 133.

                  "Control" means the possession, directly or indirectly, of the
power to direct or cause the direction of the management or policies of a
Person, whether through the ability to exercise voting power, by contract or
otherwise. "Controlling" and "Controlled" have meanings correlative thereto.

                  "Default" means any event or condition which constitutes an
Event of Default or which upon notice, lapse of time or both would, unless cured
or waived, become an Event of Default.

                  "Disclosed Matters" means the actions, suits and proceedings
and the environmental matters disclosed in Schedule 3.06.

                  "dollars" or "$" refers to lawful money of the United States
of America.

                  "Effective Date" means the date on which the conditions
specified in Section 4.01 are satisfied (or waived in accordance with Section
9.02).

                  "Environmental Laws" means all laws, rules, regulations,
codes, ordinances, orders, decrees, judgments, injunctions, notices or binding
agreements issued, promulgated or entered into by any Governmental Authority,
relating in any way to the environment, preservation or reclamation of natural
resources, the management, release or threatened release of any Hazardous
Material or to health and safety matters.

                  "Environmental Liability" means any liability, contingent or
otherwise (including any liability for damages, costs of environmental
remediation, fines, penalties or indemnities), of the Borrower or any Subsidiary
directly or indirectly resulting from or based upon (a) violation of any
Environmental Law, (b) the generation, use, handling, transportation, storage,
treatment or disposal of any Hazardous Materials, (c) exposure to any Hazardous
Materials, (d) the release or threatened release of any Hazardous Materials into
the environment or (e) any contract, agreement or other consensual arrangement
pursuant to which liability is assumed or imposed with respect to any of the
foregoing.

                  "Equity Interests" means shares of capital stock, partnership
interests, membership interests in a limited liability company, beneficial
interests in a trust or other equity ownership interests in a Person, and any
warrants, options or other rights entitling the holder thereof to purchase or
acquire any such equity interest.

                  "ERISA" means the Employee Retirement Income Security Act of
1974, as amended from time to time.

CREDIT AGREEMENT, Page 5

<PAGE>

                  "ERISA Affiliate" means any trade or business (whether or not
incorporated) that, together with the Borrower, is treated as a single employer
under Section 414(b) or (c) of the Code or, solely for purposes of Section 302
of ERISA and Section 412 of the Code, is treated as a single employer under
Section 414 of the Code.

                  "ERISA Event" means (a) any "reportable event", as defined in
Section 4043 of ERISA or the regulations issued thereunder with respect to a
Plan (other than an event for which the 30-day notice period is waived); (b) the
existence with respect to any Plan of an "accumulated funding deficiency" (as
defined in Section 412 of the Code or Section 302 of ERISA), whether or not
waived; (c) the filing pursuant to Section 412(d) of the Code or Section 303(d)
of ERISA of an application for a waiver of the minimum funding standard with
respect to any Plan; (d) the incurrence by the Borrower or any of its ERISA
Affiliates of any liability under Title IV of ERISA with respect to the
termination of any Plan; (e) the receipt by the Borrower or any ERISA Affiliate
from the PBGC or a plan administrator of any notice relating to an intention to
terminate any Plan or Plans or to appoint a trustee to administer any Plan; (f)
the incurrence by the Borrower or any of its ERISA Affiliates of any liability
with respect to the withdrawal or partial withdrawal from any Plan or
Multiemployer Plan; or (g) the receipt by the Borrower or any ERISA Affiliate of
any notice, or the receipt by any Multiemployer Plan from the Borrower or any
ERISA Affiliate of any notice, concerning the imposition of Withdrawal Liability
or a determination that a Multiemployer Plan is, or is expected to be, insolvent
or in reorganization, within the meaning of Title IV of ERISA.

                  "Eurodollar", when used in reference to any Loan or Borrowing,
refers to whether such Loan, or the Loans comprising such Borrowing, are bearing
interest at a rate determined by reference to the Adjusted LIBO Rate.

                  "Event of Default" has the meaning assigned to such term in
Article VII.

                  "Excluded Taxes" means, with respect to the Administrative
Agent, any Lender, any Issuing Bank or any other recipient of any payment to be
made by or on account of any obligation of the Borrower hereunder, (a) income or
franchise taxes imposed on (or measured by) its net income by the United States
of America, or by the jurisdiction under the laws of which such recipient is
organized or in which its principal office is located or, in the case of any
Lender, in which its applicable lending office is located, (b) any branch
profits taxes imposed by the United States of America or any similar tax imposed
by any other jurisdiction in which the Borrower is located and (c) in the case
of a Foreign Lender (other than an assignee pursuant to a request by the
Borrower under Section 2.18(b)), any withholding tax that is imposed on amounts
payable to such Foreign Lender at the time such Foreign Lender becomes a party
to this Agreement (or designates a new lending office) or is attributable to
such Foreign Lender's failure to comply with Section 2.16(e), except to the
extent that such Foreign Lender (or its assignor, if any) was entitled, at the
time of designation of a new lending office (or assignment), to receive
additional amounts from the Borrower with respect to such withholding tax
pursuant to Section 2.16(a).

                  "Existing Letters of Credit" shall mean the letters of credit
issued by Bank One, N.A. under the Prior Credit Agreement, which are outstanding
on the Effective Date and are listed on Schedule 1.01(a) hereto.

                  "Federal Funds Effective Rate" means, for any day, the
weighted average (rounded upwards, if necessary, to the next 1/100 of 1%) of the
rates on overnight Federal funds transactions with members of the Federal
Reserve System arranged by Federal funds brokers, as published on the next
succeeding 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
(rounded upwards, if necessary, to the next 1/100 of 1%) of the quotations for
such day for such transactions received by the Administrative Agent from three
Federal funds brokers of recognized standing selected by it.

CREDIT AGREEMENT, Page 6

<PAGE>

                  "Financial Officer" means the chief financial officer,
principal accounting officer, treasurer or controller of the Borrower.

                  "Foreign Lender" means any Lender that is organized under the
laws of a jurisdiction other than that in which the Borrower is located. For
purposes of this definition, the United States of America, each State thereof
and the District of Columbia shall be deemed to constitute a single
jurisdiction.

                  "GAAP" means generally accepted accounting principles in the
United States of America.

                  "Governmental Authority" means the government of the United
States of America, any other nation or any political subdivision thereof,
whether state or local, and any agency, authority, instrumentality, regulatory
body, court, central bank or other entity exercising executive, legislative,
judicial, taxing, regulatory or administrative powers or functions of or
pertaining to government.

                  "Guaranty" of or by any Person (the "guarantor") means any
obligation, contingent or otherwise, of the guarantor guarantying or having the
economic effect of guarantying any Indebtedness or other obligation (including
any obligation under an operating lease) of any other Person (the "primary
obligor") in any manner, whether directly or indirectly, and including any
obligation of the guarantor, direct or indirect, (a) to purchase or pay (or
advance or supply funds for the purchase or payment of) such Indebtedness or
other obligation or to purchase (or to advance or supply funds for the purchase
of) any security for the payment thereof, (b) to purchase or lease property,
securities or services for the purpose of assuring the owner of such
Indebtedness or other obligation (including any obligation under an operating
lease) of the payment thereof, (c) to maintain working capital, equity capital
or any other financial statement condition or liquidity of the primary obligor
so as to enable the primary obligor to pay such Indebtedness or other obligation
or (d) as an account party in respect of any letter of credit or letter of
guaranty issued to support such Indebtedness or obligation; provided, that the
term Guaranty shall not include endorsements for collection or deposit in the
ordinary course of business.

                  "Guarantor" means any Subsidiary of the Borrower who is a
guarantor under the Subsidiary Guaranty as required by Section 5.09.

                  "Hazardous Materials" means all explosive or radioactive
substances or wastes and all hazardous or toxic substances, wastes or other
pollutants, including petroleum or petroleum distillates, asbestos or asbestos
containing materials, polychlorinated biphenyls, radon gas, infectious or
medical wastes and all other substances or wastes of any nature regulated
pursuant to any Environmental Law.

                  "Indebtedness" of any Person means, without duplication, (a)
all obligations of such Person for borrowed money; (b) all obligations of such
Person evidenced by bonds, debentures, notes or similar instruments; (c) all
obligations of such Person under conditional sale or other title retention
agreements relating to property acquired by such Person; (d) all obligations of
such Person in respect of the deferred purchase price of property or services
(excluding current accounts payable incurred in the ordinary course of business
and payable on customary trade terms); (e) all Indebtedness of others secured by
(or for which the holder of such Indebtedness has an existing right, contingent
or otherwise, to be secured by) any Lien on property owned or acquired by such
Person, whether or not the Indebtedness secured thereby has been assumed; (f)
all Guaranties by such Person; (g) all Capital Lease Obligations of such Person;
(h) all obligations, contingent or otherwise, of such Person as an account party
in respect of letters of credit; (i) all obligations, contingent or otherwise,
of such Person in respect of bankers' acceptances; (j) all obligations of such
Person in respect of mandatory redemption or mandatory dividend rights on Equity
Interests but excluding dividends payable solely in additional Equity Interests;
(k) all obligations of such Person, contingent or otherwise, for the payment of
money under any noncompete,

CREDIT AGREEMENT, Page 7

<PAGE>

consulting or similar agreement entered into with the seller of a target or any
other similar arrangements providing for the deferred payment of the purchase
price for an Acquisition permitted hereby or an Acquisition consummated prior to
the date hereof; (l) all obligations of such Person under any Swap Agreement;
(m) all Limited Recourse Liabilities of such Person; (n) all obligations of such
Person to purchase securities or other property arising out of or in connection
with the sale of the same or substantially similar securities or property; and
(o) any other obligation for borrowed money or other financial accommodation
which in accordance with GAAP would be shown as a liability on the consolidated
balance sheet of such Person. The Indebtedness of any Person shall include the
Indebtedness of any other entity (including any partnership in which such Person
is a general partner) to the extent such Person is liable therefor as a result
of such Person's ownership interest in or other relationship with such entity,
except to the extent the terms of such Indebtedness provide that such Person is
not liable therefor. For purposes of the forgoing sentence and as of the
Effective Date, "any other entity" when considered with respect to any
Subsidiary that is a general partner of a Joint Venture, shall include the
applicable Joint Venture. The amount of the obligations of any Person in respect
of any Swap Agreement shall, at any time of determination and for all purposes
under this Agreement, be the maximum aggregate amount (giving effect to any
netting agreements) that such Person would be required to pay if such Swap
Agreement were terminated at such time giving effect to current market
conditions notwithstanding any contrary treatment in accordance with GAAP.

                  "Indemnified Taxes" means Taxes other than Excluded Taxes.

                  "Information Memorandum" means the Confidential Information
Memorandum dated October 2003 relating to the Borrower and the Transactions.

                  "Interest Election Request" means a request by the Borrower to
convert or continue a Revolving Borrowing in accordance with Section 2.07.

                  "Interest Payment Date" means (a) with respect to any ABR Loan
(other than a Swingline Loan), the last day of each March, June, September and
December, (b) with respect to any Eurodollar Loan, the last day of the Interest
Period applicable to the Borrowing of which such Loan is a part and, in the case
of a Eurodollar Borrowing with an Interest Period of more than three months'
duration, each day prior to the last day of such Interest Period that occurs at
intervals of three months' duration after the first day of such Interest Period,
and (c) with respect to any Swingline Loan, the day that such Loan is required
to be repaid.

                  "Interest Period" means with respect to any Eurodollar
Borrowing, a period of one week or one, two, three or six months commencing on a
Business Day selected by the Borrower pursuant to this Agreement. A weekly
Interest Period shall end on the day of the next following week which
corresponds to the day of the week on which such Interest Period began, however,
if such Interest Period would end on a day other than a Business Day, such
Interest Period shall be extended to the next succeeding Business Day. A monthly
Interest Period shall end on the day which corresponds numerically to such date
one, two, three or six months thereafter, as the Borrower may elect, however:
(i) if any monthly Interest Period would end on a day other than a Business Day,
such Interest Period shall be extended to the next succeeding Business Day
unless such next succeeding Business Day would fall in the next calendar month,
in which case such Interest Period shall end on the immediately preceding
Business Day and (ii) any monthly Interest Period that commences on the last
Business Day of a calendar month (or on a day for which there is no numerically
corresponding day in the last calendar month of such Interest Period) shall end
on the last Business Day of the last calendar month of such Interest Period. For
purposes hereof, the date of a Borrowing initially shall be the date on which
such Borrowing is made and, in the case of a Revolving Borrowing, thereafter
shall be the effective date of the most recent conversion or continuation of
such Borrowing.

CREDIT AGREEMENT, Page 8

<PAGE>

                  "Issuing Bank" means JPMorgan Chase Bank or, with respect to
the Existing Letters of Credit only, Bank One, N.A., in each case in their
respective capacities as the issuers of Letters of Credit, and their respective
successors in such capacity. JPMorgan Chase Bank may, in its discretion, arrange
for one or more Letters of Credit to be issued by its Affiliates, in which case
the term "Issuing Bank" shall include any such Affiliate with respect to Letters
of Credit issued by such Affiliate.

                  "Joint Ventures" means each of Illinois Cement Company and
Texas-Lehigh Cement Company, L.P.

                  "LC Disbursement" means a payment made by an Issuing Bank
pursuant to a Letter of Credit.

                  "LC Exposure" means, at any time, the sum of (a) the aggregate
undrawn amount of all outstanding Letters of Credit at such time plus (b) the
aggregate amount of all LC Disbursements that have not yet been reimbursed by or
on behalf of the Borrower at such time. The LC Exposure of any Lender at any
time shall be its Applicable Percentage of the total LC Exposure at such time.

                  "Lenders" means the Persons listed on Schedule 2.01 and any
other Person that shall have become a party hereto pursuant to an Assignment and
Assumption, other than any such Person that ceases to be a party hereto pursuant
to an Assignment and Assumption. Unless the context otherwise requires, the term
"Lenders" includes the Swingline Lender.

                  "Letter of Credit" means any letter of credit issued pursuant
to this Agreement and any Existing Letter of Credit.

                  "Leverage Ratio" means, as of any date, the ratio of
Consolidated Indebtedness to Consolidated EBITDA then most recently calculated
in accordance with Section 6.10.

                  "LIBO Rate" means, with respect to any Eurodollar Borrowing
for any Interest Period, the rate appearing on Page 3750 of the Dow Jones Market
Service (or on any successor or substitute page of such Service, or any
successor to or substitute for such Service, providing rate quotations
comparable to those currently provided on such page of such Service, as
determined by the Administrative Agent from time to time for purposes of
providing quotations of interest rates applicable to dollar deposits in the
London interbank market) at approximately 11:00 A.M., London time, two Business
Days prior to the commencement of such Interest Period, as the rate for dollar
deposits with a maturity comparable to such Interest Period. In the event that
such rate is not available at such time for any reason, then the "LIBO Rate"
with respect to such Eurodollar Borrowing for such Interest Period shall be the
rate at which dollar deposits of $5,000,000 and for a maturity comparable to
such Interest Period are offered by the principal London office of the
Administrative Agent in immediately available funds in the London interbank
market at approximately 11:00 A.M., London time, two Business Days prior to the
commencement of such Interest Period.

                  "Lien" means, with respect to any asset, (a) any mortgage,
deed of trust, lien, pledge, hypothecation, encumbrance, charge or security
interest in, on or of such asset, (b) the interest of a vendor or a lessor under
any conditional sale agreement, capital lease or title retention agreement (or
any financing lease having substantially the same economic effect as any of the
foregoing) relating to such asset and (c) in the case of securities, any
purchase option, call or similar right of a third party with respect to such
securities.

                  "Limited Recourse Liability" of a Person means (i) any
repurchase obligation or liability of such Person with respect to accounts or
notes receivable sold by such Person, (ii) any liability under any sale and
leaseback transaction which is not characterized as a Capital Lease Obligation,
(iii) any

CREDIT AGREEMENT, Page 9

<PAGE>

liability under any Synthetic Lease entered into by such Person, (iv) any
obligation or liability arising with respect to any sale or transfer of an
interest in accounts receivable of the Borrower or any Subsidiary on a limited
recourse basis, or (v) any obligation for which such Person is liable arising
with respect to any other transaction which is the functional equivalent of or
takes the place of borrowing but which does not constitute a liability on the
balance sheet of such Person, but excluding from this clause (v) any lease
classified as an operating lease in accordance with GAAP.

                  "Loans" means the loans made by the Lenders to the Borrower
pursuant to this Agreement.

                  "Loan Documents" means this Agreement, any notes executed
pursuant hereto, the Subsidiary Guaranty and all other documentation now or
hereafter executed and/or delivered by Borrower or any Guarantor in connection
with any of the foregoing, but shall not include any documentation executed or
delivered in connection with the Spin Off.

                  "Material Adverse Effect" means any event, development or
circumstance that has had or could reasonably be expected to have a material
adverse effect on (a) the business, property, financial condition or results of
operation of the Borrower and the Subsidiaries taken as a whole; (b) the ability
of the Borrower and the Subsidiaries (taken as a whole) to perform their
respective obligations under the Loan Documents; or (c) the validity or
enforceability of any of the Loan Documents or the rights or remedies of the
Administrative Agent and the Lenders thereunder.

                  "Material Indebtedness" means Indebtedness (other than the
Loans and Letters of Credit), or obligations in respect of one or more Swap
Agreements, of any one or more of the Borrower and the Subsidiaries in an
aggregate principal or notional amount, respectively, exceeding $2,500,000.

                  "Material Subsidiary" means, as of any date of determination,
any Subsidiary whose: (i) total assets are, at that date, equal to or greater
than 15% of the Borrower's consolidated total assets; (ii) total sales for the
12 completed months immediately prior to the date of determination are equal to
or greater than 15% of the Borrower's consolidated sales for such period; or
(iii) Consolidated EBITDA for the 12 completed months immediately prior to the
date of determination is equal to or greater than 15% of the Borrower's
Consolidated EBITDA for such period.

                  "Maturity Date" means December 18, 2006.

                  "Moody's" means Moody's Investors Service, Inc.

                  "Multiemployer Plan" means a multiemployer plan as defined in
Section 4001(a)(3) of ERISA.

                  "New Material Subsidiary" has the meaning set forth in Section
5.09.

                  "Non-Guarantor Amount" has the meaning set forth in clause (c)
of Section 6.01.

                  "Non-Guarantor Subsidiary" means a Subsidiary that is not a
Guarantor.

                  "Other Taxes" means any and all present or future stamp or
documentary taxes or any other excise or property taxes, charges or similar
levies arising from any payment made hereunder or from the execution, delivery
or enforcement of, or otherwise with respect to, this Agreement.

                  "Participant" has the meaning set forth in Section 9.04.

CREDIT AGREEMENT, Page 10

<PAGE>

                  "PBGC" means the Pension Benefit Guaranty Corporation referred
to and defined in ERISA and any successor entity performing similar functions.

                  "Permitted Encumbrances" means:

                  (a)      Liens created pursuant to the terms of the Loan
         Documents;

                  (b)      Liens imposed by law for taxes, assessments or
         governmental charges or levies that are not yet due or are being
         contested in compliance with Section 5.04;

                  (c)      carriers', warehousemen's, mechanics', materialmen's,
         repairmen's and other like Liens imposed by law, arising in the
         ordinary course of business and securing obligations that are not
         overdue by more than 60 days or are being contested in compliance with
         Section 5.04;

                  (d)      pledges and deposits made in the ordinary course of
         business in compliance with workers' compensation, unemployment
         insurance and other social security, retirement or similar laws or
         regulations;

                  (e)      judgment liens in respect of judgments that do not
         constitute an Event of Default under clause (k) of Article VII;

                  (f)      easements, zoning restrictions, rights-of-way and
         similar encumbrances on real property imposed by law or arising in the
         ordinary course of business or of a nature generally existing with
         respect to properties of a similar character, in each case that do not
         secure any monetary obligations and do not materially detract from the
         value of the affected property or interfere with the ordinary conduct
         of business of the Borrower or any Subsidiary; and

                  (g)      liens arising from filing UCC financing statements
         regarding leases permitted by this Agreement.

                  "Permitted Investments" means:

                  (a)      direct obligations of, or obligations the principal
         of and interest on which are unconditionally guarantied by, the United
         States of America (or by any agency thereof to the extent such
         obligations are backed by the full faith and credit of the United
         States of America), in each case maturing within one year from the date
         of acquisition thereof;

                  (b)      investments in commercial paper maturing within 270
         days from the date of acquisition thereof and having, at such date of
         acquisition, a credit rating of at least A-1 from S&P or at least P-1
         from Moody's;

                  (c)      investments in certificates of deposit, banker's
         acceptances and time deposits maturing within 180 days from the date of
         acquisition thereof issued or guarantied by or placed with, and money
         market deposit accounts issued or offered by, any domestic office of
         any commercial bank organized under the laws of the United States of
         America or any State thereof which has a combined capital and surplus
         and undivided profits of not less than $500,000,000;

CREDIT AGREEMENT, Page 11

<PAGE>

                  (d)      fully collateralized repurchase agreements with a
         term of not more than 30 days for securities described in clause (a)
         above and entered into with a financial institution satisfying the
         criteria described in clause (c) above; and

                  (e)      money market funds that (i) comply with the criteria
         set forth in Securities and Exchange Commission Rule 2a-7 under the
         Investment Company Act of 1940, (ii) are rated at least A- by S&P and
         A3 by Moody's and (iii) have portfolio assets of at least
         $5,000,000,000.

                  "Person" means any natural person, corporation, limited
liability company, trust, joint venture, association, company, partnership,
Governmental Authority or other entity.

                  "Plan" means any employee pension benefit plan (other than a
Multiemployer Plan) subject to the provisions of Title IV of ERISA or Section
412 of the Code or Section 302 of ERISA, and in respect of which the Borrower or
any ERISA Affiliate is (or, if such plan were terminated, would under Section
4069 of ERISA be deemed to be) an "employer" as defined in Section 3(5) of
ERISA.

                  "Prime Rate" means the rate of interest per annum publicly
announced from time to time by JPMorgan Chase Bank as its prime rate in effect
at its principal office in New York, New York; each change in the Prime Rate
shall be effective from and including the date such change is publicly announced
as being effective.

                  "Prior Credit Agreement" means that certain Second Amended and
Restated Credit Agreement dated March 25, 2003 among Borrower, Bank One, NA, as
administrative agent, and the lending institutions party thereto.

                  "Purchase Price" has the meaning set forth in Section
6.04(h)(v).

                  "Receivable Financing Amount" means the aggregate amount of
all loans and advances to, receivables due from, capital contributions to or
guaranties of the obligations of, a special purpose bankruptcy remote entity;
provided that for such a loan, advance, receivable, capital contribution or
guaranty (each a "SPV Investments") to be included in the Receivable Financing
Amount, the following conditions must be satisfied:

                  (a)      The SPV Investment must be made in connection with a
         Receivable Securitization Financing otherwise permitted hereby;

                  (b)      The special purpose bankruptcy remote entity must be
         the special purpose entity utilized in connection with the Receivable
         Securitization Financing;

                  (c)      The aggregate amount of the SPV Investments made with
         respect to any one Receivable Securitization Financing may not exceed
         the aggregate amount of the receivables transferred in the
         securitization;

                  (d)      The SPV Investment, if a loan, advance, or
         receivable, may only be made in consideration for receivables
         transferred in the securitization to evidence the consideration given
         by the special purpose entity in return therefor;

                  (e)      The SPV Investment, if a capital contribution, may
         only be made with receivables, or as a discounted sale of receivables,
         to be transferred in the securitization;

CREDIT AGREEMENT, Page 12

<PAGE>

                  (f)      If the SPV Investment is a guaranty, such guaranty
         shall be non-recourse to the Borrower or the applicable Subsidiary and
         their respective assets except the beneficiary of the guaranty may have
         recourse to the Borrower's or the applicable Subsidiary's interests in
         the receivables transferred in the securitization; and

                  (g)      The SPV Investment must not otherwise impair the
         limited recourse or true sale nature of the Receivable Securitization
         Financing.

                  "Receivable Securitization Financings" means a transaction or
group of transactions typically referred to as a securitization in which a
Person sells, directly or indirectly through another Person, its accounts
receivable on a limited recourse basis in a transaction treated as a legal true
sale to a special purpose bankruptcy remote entity who obtains debt financing or
sells interests in such receivables to finance the purchase price.

                  "Register" has the meaning set forth in Section 9.04.

                  "Related Parties" means, with respect to any specified Person,
such Person's Affiliates and the respective directors, officers, employees,
agents and advisors of such Person and such Person's Affiliates.

                  "Required Lenders" means, at any time, Lenders having
Revolving Credit Exposures and unused Commitments representing at least 51% of
the sum of the total Revolving Credit Exposures and unused Commitments at such
time.

                  "Restricted Payment" means any dividend or other distribution
(whether in cash, securities or other property) with respect to any Equity
Interests in the Borrower or any Subsidiary, or any payment (whether in cash,
securities or other property), including any sinking fund or similar deposit, on
account of the purchase, redemption, retirement, acquisition, cancellation or
termination of any Equity Interest in the Borrower or any option, warrant or
other right to acquire any such Equity Interest in the Borrower.

                  "Restricted Payment Limit" has the meaning set forth in
Section 6.06.

                  "Revolving Credit Exposure" means, with respect to any Lender
at any time, the sum of the outstanding principal amount of such Lender's
Revolving Loans and its LC Exposure and Swingline Exposure at such time.

                  "Revolving Loan" means a Loan made pursuant to Section 2.03.

                  "S&P" means Standard & Poor's.

                  "Special Dividend" means the approximate $6.00 per share cash
dividend to be paid by the Borrower to the holders of the Borrower's common
stock in connection with the Spin Off.

                  "Spin Off" means the transaction in which the following steps
occur on substantially the terms described below and in the following order:

                  (a)      the Borrower would pay a cash dividend to all of its
         stockholders (including Centex) of approximately $6.00 per share;

                  (b)      approximately 77% of the shares of common stock of
         the Borrower currently held by Centex are recapitalized into a newly
         established Class B Common Stock which would be substantially identical
         in all respects to the Borrower's existing

CREDIT AGREEMENT, Page 13

<PAGE>

         common stock except that the new Class B Common Stock would be entitled
         as a class to elect at least approximately 85% of the Borrower's Board
         of Directors (and immediately after the completion of the transaction
         described in this definition, the Class B Common Stock will represent
         approximately 50% of the total of the Borrower's common shares
         outstanding); and

                  (c)      the Class B Common Stock and the remaining shares of
         the Borrower's common stock owned by Centex would be distributed by
         Centex to the Centex shareholders.

                  "Statutory Reserve Rate" means a fraction (expressed as a
decimal), the numerator of which is the number one and the denominator of which
is the number one minus the aggregate of the maximum reserve percentages
(including any marginal, special, emergency or supplemental reserves) expressed
as a decimal established by the Board to which the Administrative Agent is
subject for eurocurrency funding (currently referred to as "Eurocurrency
Liabilities" in Regulation D of the Board). Such reserve percentages shall
include those imposed pursuant to such Regulation D. Eurodollar Loans shall be
deemed to constitute eurocurrency funding and to be subject to such reserve
requirements without benefit of or credit for proration, exemptions or offsets
that may be available from time to time to any Lender under such Regulation D or
any comparable regulation. The Statutory Reserve Rate shall be adjusted
automatically on and as of the effective date of any change in any reserve
percentage.

                  "subsidiary" means, with respect to any Person (the "parent")
at any date, any corporation, limited liability company, partnership,
association or other entity of which securities or other ownership interests
representing more than 50% of the equity or more than 50% of the ordinary voting
power or, in the case of a partnership, more than 50% of the general partnership
interests are, as of such date, owned, Controlled or held, by the parent or one
or more subsidiaries of the parent or by the parent and one or more subsidiaries
of the parent.

                  "Subsidiary" means any subsidiary of the Borrower. As of the
Effective Date, neither Illinois Cement Company nor Texas-Lehigh Cement Company,
L.P. is a Subsidiary and as a result, nothing in this Agreement shall prohibit
or otherwise restrict: (i) the creation, incurrence or assumption by either
Illinois Cement Company or Texas-Lehigh Cement Company, L.P. of any Indebtedness
of any kind (except to the extent that the Indebtedness of a Joint Venture may
be limited by the fact that the Indebtedness of a Subsidiary that is its general
partner, if any, may be limited hereby) or (ii) the creation, incurrence or
assumption by either Illinois Cement Company or Texas-Lehigh Cement Company,
L.P. of any Liens on any of its properties or assets.

                  "Subsidiary Guaranty" means that certain Guaranty Agreement
dated the date hereof executed by certain of the Subsidiaries, substantially in
the form of Exhibit C hereto.

                  "Substantial Portion" has the meaning set forth in Section
6.03.

                  "Swap Agreement" means any agreement with respect to any swap,
forward, future or derivative transaction or option or similar agreement
involving, or settled by reference to, one or more rates, currencies,
commodities, equity or debt instruments or securities, or economic, financial or
pricing indices or measures of economic, financial or pricing risk or value or
any similar transaction or any combination of these transactions; provided that
no phantom stock or similar plan providing for payments only on account of
services provided by current or former directors, officers, employees or
consultants of the Borrower or the Subsidiaries shall be a Swap Agreement.

CREDIT AGREEMENT, Page 14

<PAGE>

                  "Swingline Exposure" means, at any time, the aggregate
principal amount of all Swingline Loans outstanding at such time. The Swingline
Exposure of any Lender at any time shall be its Applicable Percentage of the
total Swingline Exposure at such time.

                  "Swingline Lender" means JPMorgan Chase Bank, in its capacity
as lender of Swingline Loans hereunder.

                  "Swingline Loan" means a Loan made pursuant to Section 2.04.

                  "Synthetic Lease" means a lease (i) that is treated as an
operating lease under GAAP and (ii) (a) in respect of which the leased asset is
treated as owned by the lessee for purposes of the Code and/or (b) that is
treated as a loan to the lessee for commercial law or insolvency law purposes.

                  "Taxes" means any and all present or future taxes, levies,
imposts, duties, deductions, charges or withholdings imposed by any Governmental
Authority.

                  "Transactions" means the execution, delivery and performance
by the Borrower of this Agreement, the borrowing of Loans, the use of the
proceeds thereof, the execution, delivery and performance by each Guarantor of
the Subsidiary Guaranty and the issuance of Letters of Credit hereunder.

                  "Type", when used in reference to any Loan or Borrowing,
refers to whether the rate of interest on such Loan, or on the Loans comprising
such Borrowing, is determined by reference to the Adjusted LIBO Rate or the
Alternate Base Rate.

                  "Withdrawal Liability" means liability to a Multiemployer Plan
as a result of a complete or partial withdrawal from such Multiemployer Plan, as
such terms are defined in Part I of Subtitle E of Title IV of ERISA.

                  "Yearly Limit" has the meaning set forth in Section 6.06.

         Section 1.02. Classification of Loans and Borrowings. For purposes of
this Agreement, Loans may be classified and referred to by Class (e.g., a
"Revolving Loan") or by Type (e.g., a "Eurodollar Loan") or by Class and Type
(e.g., a "Eurodollar Revolving Loan"). Borrowings also may be classified and
referred to by Class (e.g., a "Revolving Borrowing") or by Type (e.g., a
"Eurodollar Borrowing") or by Class and Type (e.g., a "Eurodollar Revolving
Borrowing").

         Section 1.03. Terms Generally. The definitions of terms herein shall
apply equally to the singular and plural forms of the terms defined. Whenever
the context may require, any pronoun shall include the corresponding masculine,
feminine and neuter forms. The words "include", "includes" and "including" shall
be deemed to be followed by the phrase "without limitation". The word "will"
shall be construed to have the same meaning and effect as the word "shall".
Unless the context requires otherwise (a) any definition of or reference to any
agreement, instrument or other document herein shall be construed as referring
to such agreement, instrument or other document as from time to time amended,
supplemented or otherwise modified (subject to any restrictions on such
amendments, supplements or modifications set forth herein), (b) any reference
herein to any Person shall be construed to include such Person's successors and
assigns, (c) the words "herein", "hereof" and "hereunder", and words of similar
import, shall be construed to refer to this Agreement in its entirety and not to
any particular provision hereof, (d) all references herein to Articles,
Sections, Exhibits and Schedules shall be construed to refer to Articles and
Sections of, and Exhibits and Schedules to, this Agreement and (e) the words
"asset" and "property" shall be construed to have the same meaning and effect
and to refer to any and all tangible and intangible assets and properties,
including cash, securities, accounts and contract rights.

CREDIT AGREEMENT, Page 15

<PAGE>

         Section 1.04. Accounting Terms; GAAP. Except as otherwise expressly
provided herein, all terms of an accounting or financial nature shall be
construed in accordance with GAAP, as in effect from time to time; provided
that, if the Borrower notifies the Administrative Agent that the Borrower
requests an amendment to any provision hereof to eliminate the effect of any
change occurring after the date hereof in GAAP or in the application thereof on
the operation of such provision (or if the Administrative Agent notifies the
Borrower that the Required Lenders request an amendment to any provision hereof
for such purpose), regardless of whether any such notice is given before or
after such change in GAAP or in the application thereof, then such provision
shall be interpreted on the basis of GAAP as in effect and applied immediately
before such change shall have become effective until such notice shall have been
withdrawn or such provision amended in accordance herewith.

                                   ARTICLE II.

                                   The Credits

         Section 2.01. Commitments. Subject to the terms and conditions set
forth herein, each Lender agrees to make Revolving Loans to the Borrower from
time to time during the Availability Period in an aggregate principal amount
that will not result in (a) such Lender's Revolving Credit Exposure exceeding
such Lender's Commitment or (b) the total Revolving Credit Exposures exceeding
the total Commitments. Within the foregoing limits and subject to the terms and
conditions set forth herein, the Borrower may borrow, prepay and reborrow
Revolving Loans.

         Section 2.02. Loans and Borrowings.

                  (a)      Each Revolving Loan shall be made as part of a
Borrowing consisting of Revolving Loans made by the Lenders ratably in
accordance with their respective Commitments. The failure of any Lender to make
any Loan required to be made by it shall not relieve any other Lender of its
obligations hereunder; provided that the Commitments of the Lenders are several
and no Lender shall be responsible for any other Lender's failure to make Loans
as required.

                  (b)      Subject to Section 2.13, each Revolving Borrowing
shall be comprised entirely of ABR Loans or Eurodollar Loans as the Borrower may
request in accordance herewith. Each Swingline Loan shall be an ABR Loan. Each
Lender at its option may make any Eurodollar Loan by causing any domestic or
foreign branch or Affiliate of such Lender to make such Loan; provided that any
exercise of such option shall not affect the obligation of the Borrower to repay
such Loan in accordance with the terms of this Agreement.

                  (c)      At the commencement of each Interest Period for any
Eurodollar Revolving Borrowing, such Borrowing shall be in an aggregate amount
that is an integral multiple of $100,000 and not less than $1,000,000. At the
time that each ABR Revolving Borrowing is made, such Borrowing shall be in an
aggregate amount that is an integral multiple of $100,000 and not less than
$1,000,000; provided that an ABR Revolving Borrowing may be in an aggregate
amount that is equal to the entire unused balance of the total Commitments or
that is required to finance the reimbursement of an LC Disbursement as
contemplated by Section 2.05(e). Each Swingline Loan shall be in an amount that
is an integral multiple of $100,000 and not less than $100,000. Borrowings of
more than one Type and Class may be outstanding at the same time; provided that
there shall not at any time be more than a total of 6 Eurodollar Revolving
Borrowings outstanding.

                  (d)      Notwithstanding any other provision of this
Agreement, the Borrower shall not be entitled to request, or to elect to convert
or continue, any Borrowing if the Interest Period requested with respect thereto
would end after the Maturity Date.

CREDIT AGREEMENT, Page 16

<PAGE>

         Section 2.03. Requests for Revolving Borrowings. To request a Revolving
Borrowing, the Borrower shall notify the Administrative Agent of such request by
telephone (a) in the case of a Eurodollar Borrowing, not later than 10:00 A.M.,
Dallas, Texas time, three Business Days before the date of the proposed
Borrowing or (b) in the case of an ABR Borrowing, not later than 10:00 A.M.,
Dallas, Texas time, one Business Day before the date of the proposed Borrowing;
provided that any such notice of an ABR Revolving Borrowing to finance the
reimbursement of an LC Disbursement as contemplated by Section 2.05(e) may be
given not later than 9:00 A.M., Dallas, Texas time, on the date of the proposed
Borrowing. Each such telephonic Borrowing Request shall be irrevocable and shall
be confirmed promptly by hand delivery or telecopy to the Administrative Agent
of a written Borrowing Request in a form approved by the Administrative Agent
and signed by the Borrower. Each such telephonic and written Borrowing Request
shall specify the following information in compliance with Section 2.02:

                           (i)      the aggregate amount of the requested
Borrowing;

                           (ii)     the date of such Borrowing, which shall be a
Business Day;

                           (iii)    whether such Borrowing is to be an ABR
Borrowing or a Eurodollar Borrowing;

                           (iv)     in the case of a Eurodollar Borrowing, the
initial Interest Period to be applicable thereto, which shall be a period
contemplated by the definition of the term "Interest Period"; and

                           (v)      the location and number of the Borrower's
account to which funds are to be disbursed, which shall comply with the
requirements of Section 2.06.

If no election as to the Type of Revolving Borrowing is specified, then the
requested Revolving Borrowing shall be an ABR Borrowing. If no Interest Period
is specified with respect to any requested Eurodollar Revolving Borrowing, then
the Borrower shall be deemed to have selected an Interest Period of one month's
duration. Promptly following receipt of a Borrowing Request in accordance with
this Section, the Administrative Agent shall advise each Lender of the details
thereof and of the amount of such Lender's Loan to be made as part of the
requested Borrowing.

         Section 2.04. Swingline Loans.

                  (a)      Subject to the terms and conditions set forth herein,
the Swingline Lender agrees to make Swingline Loans to the Borrower from time to
time during the Availability Period, in an aggregate principal amount at any
time outstanding that will not result in (i) the aggregate principal amount of
outstanding Swingline Loans exceeding $15,000,000 or (ii) the total Revolving
Credit Exposures exceeding the total Commitments; provided that the Swingline
Lender shall not be required to make a Swingline Loan to refinance an
outstanding Swingline Loan. Within the foregoing limits and subject to the terms
and conditions set forth herein, the Borrower may borrow, prepay and reborrow
Swingline Loans.

                  (b)      To request a Swingline Loan, the Borrower shall
notify the Administrative Agent of such request by telephone (confirmed by
telecopy), not later than 1:00 P.M., Dallas, Texas time, on the day of a
proposed Swingline Loan. Each such notice shall be irrevocable and shall specify
the requested date (which shall be a Business Day) and amount of the requested
Swingline Loan. The Administrative Agent will promptly advise the Swingline
Lender of any such notice received from the Borrower. The Swingline Lender shall
make each Swingline Loan available to the Borrower by means of a credit to the
general deposit account of the Borrower with the Swingline Lender (or, in the
case of a Swingline Loan

CREDIT AGREEMENT, Page 17

<PAGE>

made to finance the reimbursement of an LC Disbursement as provided in Section
2.05(e), by remittance to an Issuing Bank) by 12:00 P.M., Dallas, Texas time, on
the requested date of such Swingline Loan.

                  (c)      The Swingline Lender may by written notice given to
the Administrative Agent not later than 11:00 A.M., Dallas, Texas time, on any
Business Day require the Lenders to acquire participations on such Business Day
in all or a portion of the Swingline Loans outstanding. Such notice shall
specify the aggregate amount of Swingline Loans in which Lenders will
participate. Promptly upon receipt of such notice, the Administrative Agent will
give notice thereof to each Lender, specifying in such notice such Lender's
Applicable Percentage of such Swingline Loan or Loans. Each Lender hereby
absolutely and unconditionally agrees, upon receipt of notice as provided above,
to pay to the Administrative Agent, for the account of the Swingline Lender,
such Lender's Applicable Percentage of such Swingline Loan or Loans excluding
however, any such Swingline Loan or Loans made by the Swingline Lender after it
received from any Lender a notice that any applicable condition precedent set
forth in Section 4.02 had not then been satisfied. Each Lender acknowledges and
agrees that, except as set forth in the immediately preceding sentence, its
obligation to acquire participations in Swingline Loans pursuant to this
paragraph is absolute and unconditional and shall not be affected by any
circumstance whatsoever, including the occurrence and continuance of a Default
or reduction or termination of the Commitments, and that each such payment shall
be made without any offset, abatement, withholding or reduction whatsoever. Each
Lender shall comply with its obligation under this paragraph by wire transfer of
immediately available funds, in the same manner as provided in Section 2.06 with
respect to Loans made by such Lender (and Section 2.06 shall apply, mutatis
mutandis, to the payment obligations of the Lenders), and the Administrative
Agent shall promptly pay to the Swingline Lender the amounts so received by it
from the Lenders. The Administrative Agent shall notify the Borrower of any
participations in any Swingline Loan acquired pursuant to this paragraph, and
thereafter payments in respect of such Swingline Loan shall be made to the
Administrative Agent and not to the Swingline Lender. Any amounts received by
the Swingline Lender from the Borrower (or other party on behalf of the
Borrower) in respect of a Swingline Loan after receipt by the Swingline Lender
of the proceeds of a sale of participations therein shall be promptly remitted
to the Administrative Agent; any such amounts received by the Administrative
Agent shall be promptly remitted by the Administrative Agent to the Lenders that
shall have made their payments pursuant to this paragraph and to the Swingline
Lender, as their interests may appear; provided that any such payment so
remitted shall be repaid to the Swingline Lender or to the Administrative Agent,
as applicable, if and to the extent such payment is required to be refunded to
the Borrower for any reason. The purchase of participations in a Swingline Loan
pursuant to this paragraph shall not relieve the Borrower of any default in the
payment thereof.

         Section 2.05. Letters of Credit.

                  (a)      General. The Borrower may request the issuance of
standby and commercial Letters of Credit for its own account, in a form
reasonably acceptable to the Administrative Agent and JPMorgan Chase Bank, and
may request the amendment, renewal and extension of outstanding Letters of
Credit. Subject to the terms and conditions set forth in this Agreement and at
any time and from time to time during the Availability Period, at the Borrower's
request: (i) JPMorgan Chase Bank agrees to issue letters of credit and to amend,
renew and extend outstanding Letters of Credit issued by JPMorgan Chase Bank and
(ii) Bank One, NA agrees to amend any Existing Letter of Credit. No Existing
Letter of Credit will be renewed or extended (other than pursuant to automatic
extensions provisions contained therein). In the event of any inconsistency
between the terms and conditions of this Agreement and the terms and conditions
of any form of letter of credit application or other agreement submitted by the
Borrower to, or entered into by the Borrower with, an Issuing Bank relating to
any Letter of Credit, the terms and conditions of this Agreement shall control.

CREDIT AGREEMENT, Page 18

<PAGE>

                  (b)      Notice of Issuance, Amendment, Renewal, Extension;
Certain Conditions. To request the issuance of a Letter of Credit (or the
amendment, renewal or extension of an outstanding Letter of Credit), the
Borrower shall hand deliver or telecopy (or transmit by electronic
communication, if arrangements for doing so have been approved by the applicable
Issuing Bank) to the applicable Issuing Bank and the Administrative Agent
(reasonably in advance of the requested date of issuance, amendment, renewal or
extension) a notice requesting the issuance of a Letter of Credit, or
identifying the Letter of Credit to be amended, renewed or extended, and
specifying the date of issuance, amendment, renewal or extension (which shall be
a Business Day), the date on which such Letter of Credit is to expire (which
shall comply with paragraph (c) of this Section), the amount of such Letter of
Credit, the name and address of the beneficiary thereof and such other
information as shall be necessary to prepare, amend, renew or extend such Letter
of Credit. If requested by the applicable Issuing Bank, the Borrower also shall
submit a letter of credit application on such Issuing Bank's standard form in
connection with any request for a Letter of Credit. A Letter of Credit shall be
issued, amended, renewed or extended only if (and upon issuance, amendment,
renewal or extension of each Letter of Credit the Borrower shall be deemed to
represent and warrant that), after giving effect to such issuance, amendment,
renewal or extension (i) the LC Exposure shall not exceed $25,000,000 and (ii)
the total Revolving Credit Exposures shall not exceed the total Commitments.

                  (c)      Expiration Date; Collateralization of Extended Term
Letters of Credit. Each Letter of Credit shall expire at or prior to the close
of business on the earlier of (i) the date one year after the date of the
issuance of such Letter of Credit (or, in the case of any renewal or extension
thereof, one year after such renewal or extension) and (ii) the date that is six
months after the Maturity Date; provided, however, that with respect to each
Letter of Credit with an expiry date beyond the Maturity Date, the Borrower
shall pledge to the Administrative Agent cash collateral in the amount, at the
time and in the manner provided for in Section 2.05(j).

                  (d)      Participations. By the issuance of a Letter of Credit
(or an amendment to a Letter of Credit increasing the amount thereof) or on the
Effective Date with respect to the Existing Letters of Credit, and without any
further action on the part of an Issuing Bank or the Lenders, the applicable
Issuing Bank hereby grants to each Lender, and each Lender hereby acquires from
the applicable Issuing Bank, a participation in such Letter of Credit equal to
such Lender's Applicable Percentage of the aggregate amount available to be
drawn under such Letter of Credit. In consideration and in furtherance of the
foregoing, each Lender hereby absolutely and unconditionally agrees to pay to
the Administrative Agent, for the account of the applicable Issuing Bank, such
Lender's Applicable Percentage of each LC Disbursement made by an Issuing Bank
and not reimbursed by the Borrower on the date due as provided in paragraph (e)
of this Section, or of any reimbursement payment required to be refunded to the
Borrower for any reason. Each Lender acknowledges and agrees that its obligation
to acquire participations pursuant to this paragraph in respect of Letters of
Credit is absolute and unconditional and shall not be affected by any
circumstance whatsoever, including any amendment, renewal or extension of any
Letter of Credit or the occurrence and continuance of a Default or reduction or
termination of the Commitments, and that each such payment shall be made without
any offset, abatement, withholding or reduction whatsoever.

                  (e)      Reimbursement. If an Issuing Bank shall make any LC
Disbursement in respect of a Letter of Credit, the Borrower shall reimburse such
LC Disbursement by paying to the Administrative Agent an amount equal to such LC
Disbursement not later than 11:00 A.M., Dallas, Texas time, on the date that
such LC Disbursement is made, if the Borrower shall have received notice of such
LC Disbursement prior to 9:00 A.M., Dallas, Texas time, on such date, or, if
such notice has not been received by the Borrower prior to such time on such
date, then not later than 11:00 A.M., Dallas, Texas time, on (i) the Business
Day that the Borrower receives such notice, if such notice is received prior to
9:00 A.M., Dallas, Texas time, on the day of receipt, or (ii) the Business Day
immediately following the

CREDIT AGREEMENT, Page 19

<PAGE>

day that the Borrower receives such notice, if such notice is not received prior
to such time on the day of receipt; provided that the Borrower may, subject to
the conditions to borrowing set forth herein, request in accordance with Section
2.03 or 2.04 that such payment be financed with an ABR Revolving Borrowing or
Swingline Loan in an equivalent amount and, to the extent so financed, the
Borrower's obligation to make such payment shall be discharged and replaced by
the resulting ABR Revolving Borrowing or Swingline Loan. If the Borrower fails
to make such payment when due, the Administrative Agent shall notify each Lender
of the applicable LC Disbursement, the payment then due from the Borrower in
respect thereof and such Lender's Applicable Percentage thereof. Promptly
following receipt of such notice, each Lender shall pay to the Administrative
Agent its Applicable Percentage of the payment then due from the Borrower, in
the same manner as provided in Section 2.06 with respect to Loans made by such
Lender (and Section 2.06 shall apply, mutatis mutandis, to the payment
obligations of the Lenders), and the Administrative Agent shall promptly pay to
the applicable Issuing Bank the amounts so received by it from the Lenders.
Promptly following receipt by the Administrative Agent of any payment from the
Borrower pursuant to this paragraph, the Administrative Agent shall distribute
such payment to the applicable Issuing Bank or, to the extent that Lenders have
made payments pursuant to this paragraph to reimburse the applicable Issuing
Bank, then to such Lenders and the applicable Issuing Bank as their interests
may appear. Any payment made by a Lender pursuant to this paragraph to reimburse
an Issuing Bank for any LC Disbursement (other than the funding of ABR Revolving
Loans or a Swingline Loan as contemplated above) shall not constitute a Loan and
shall not relieve the Borrower of its obligation to reimburse such LC
Disbursement.

                  (f)      Obligations Absolute. The Borrower's obligation to
reimburse LC Disbursements as provided in paragraph (e) of this Section shall be
absolute, unconditional and irrevocable, and shall be performed strictly in
accordance with the terms of this Agreement under any and all circumstances
whatsoever and irrespective of (i) any lack of validity or enforceability of any
Letter of Credit or this Agreement, or any term or provision therein, (ii) any
draft or other document presented under a Letter of Credit proving to be forged,
fraudulent or invalid in any respect or any statement therein being untrue or
inaccurate in any respect, (iii) payment by an Issuing Bank under a Letter of
Credit against presentation of a draft or other document that does not comply
with the terms of such Letter of Credit, or (iv) any other event or circumstance
whatsoever, whether or not similar to any of the foregoing, that might, but for
the provisions of this Section, constitute a legal or equitable discharge of, or
provide a right of setoff against, the Borrower's obligations hereunder. Neither
the Administrative Agent, the Lenders nor any Issuing Bank, nor any of their
Related Parties, shall have any liability or responsibility by reason of or in
connection with the issuance or transfer of any Letter of Credit or any payment
or failure to make any payment thereunder (irrespective of any of the
circumstances referred to in the preceding sentence), or any error, omission,
interruption, loss or delay in transmission or delivery of any draft, notice or
other communication under or relating to any Letter of Credit (including any
document required to make a drawing thereunder), any error in interpretation of
technical terms or any consequence arising from causes beyond the control of an
Issuing Bank; provided that the foregoing shall not be construed to excuse an
Issuing Bank from liability to the Borrower to the extent of any direct damages
(as opposed to consequential damages, claims in respect of which are hereby
waived by the Borrower to the extent permitted by applicable law) suffered by
the Borrower that are caused by (i) an Issuing Bank's failure to exercise care
when determining whether drafts and other documents presented under a Letter of
Credit comply with the terms thereof or (ii) an Issuing Bank's failure to pay
under any Letter of Credit after the presentation to it of drafts or other
documents strictly complying with the terms and conditions of such Letter of
Credit. The parties hereto expressly agree that, in the absence of gross
negligence or willful misconduct on the part of an Issuing Bank (as finally
determined by a court of competent jurisdiction), the Issuing Bank shall be
deemed to have exercised care in each such determination referred to in clause
(i) of the preceding sentence. In furtherance of the foregoing and without
limiting the generality thereof, the parties agree that, with respect to
documents presented which appear on their face to be in substantial compliance
with the terms of a Letter of Credit, an Issuing Bank may, in its sole

CREDIT AGREEMENT, Page 20

<PAGE>

discretion, either accept and make payment upon such documents without
responsibility for further investigation, regardless of any notice or
information to the contrary, or refuse to accept and make payment upon such
documents if such documents are not in strict compliance with the terms of such
Letter of Credit.

                  (g)      Disbursement Procedures. An Issuing Bank shall,
promptly following its receipt thereof, examine all documents purporting to
represent a demand for payment under a Letter of Credit. The Issuing Bank under
such Letter of Credit shall promptly notify the Administrative Agent and the
Borrower by telephone (confirmed by telecopy) of such demand for payment,
including the amount thereof and the proposed payment date, and whether it has
made or will make an LC Disbursement thereunder; provided that any failure to
give or delay in giving such notice shall not relieve the Borrower of its
obligation to reimburse the applicable Issuing Bank and the Lenders with respect
to any such LC Disbursement.

                  (h)      Interim Interest. If an Issuing Bank shall make any
LC Disbursement, then, unless the Borrower shall reimburse such LC Disbursement
in full on the date such LC Disbursement is made, the unpaid amount thereof
shall bear interest, for each day from and including the date such LC
Disbursement is made to but excluding the date that the Borrower reimburses such
LC Disbursement, at the rate per annum then applicable to ABR Revolving Loans;
provided that, if the Borrower fails to reimburse such LC Disbursement when due
pursuant to paragraph (e) of this Section, then Section 2.12(e) shall apply.
Interest accrued pursuant to this paragraph shall be for the account of the
applicable Issuing Bank, except that interest accrued on and after the date of
payment by any Lender pursuant to paragraph (e) of this Section to reimburse an
Issuing Bank shall be for the account of such Lender to the extent of such
payment.

                  (i)      Replacement of the Issuing Bank. JPMorgan Chase Bank
may be replaced as an Issuing Bank hereunder at any time by written agreement
among the Borrower, the Administrative Agent, JPMorgan Chase Bank and the
successor. The Administrative Agent shall notify the Lenders of any such
replacement of JPMorgan Chase Bank. At the time any such replacement shall
become effective, the Borrower shall pay all unpaid fees accrued for the account
of JPMorgan in its capacity as the replaced Issuing Bank pursuant to Section
2.11(b). From and after the effective date of any such replacement, (i) the
successor shall have all the rights and obligations of an Issuing Bank under
this Agreement with respect to Letters of Credit to be issued thereafter and
(ii) references herein to the term "Issuing Bank" shall be deemed to refer to
such successor or to any previous Issuing Bank, or to such successor and all
previous Issuing Banks, as the context shall require. After the replacement of
an Issuing Bank hereunder, the replaced Issuing Bank shall remain a party hereto
and shall continue to have all the rights and obligations of an Issuing Bank
under this Agreement with respect to Letters of Credit issued by it prior to
such replacement, but shall not be required to issue additional Letters of
Credit.

                  (j)      Cash Collateralization. If any Event of Default shall
occur and be continuing, on the Business Day that the Borrower receives notice
from the Administrative Agent or the Required Lenders demanding the deposit of
cash collateral pursuant to this paragraph, the Borrower shall deposit in an
account with the Administrative Agent, in the name of the Administrative Agent
and for the benefit of the Lenders (the "Cash Collateral Account"), an amount in
cash equal to the LC Exposure as of such date plus any accrued and unpaid
interest thereon; provided that the obligation to deposit such cash collateral
shall become effective immediately, and such deposit shall become immediately
due and payable, without demand or other notice of any kind, upon the occurrence
of any Event of Default with respect to the Borrower described in clause (h) or
(i) of Article VII. If the Borrower is required to deposit cash collateral
pursuant to Section 2.10(b) because the Revolving Credit Exposures exceed the
total Commitments, the Borrower shall deposit cash collateral in the Cash
Collateral Account in an aggregate amount equal to such excess plus any accrued
and unpaid interest thereon. If the Borrower is required to

CREDIT AGREEMENT, Page 21

<PAGE>

pledge cash collateral pursuant to clause (c) of this Section, then on or before
the date 30 days prior to the Maturity Date, the Borrower shall deposit in the
Cash Collateral Account an amount in cash equal to the aggregate LC Exposure for
all Letters of Credit that have expiry dates past the Maturity Date plus any
accrued and unpaid interest thereon. The deposits made under this paragraph
shall be held by the Administrative Agent as collateral for the payment and
performance of the obligations of the Borrower under this Agreement. The
Administrative Agent shall have exclusive dominion and control, including the
exclusive right of withdrawal, over the Cash Collateral Account. Other than any
interest earned on the investment of such deposits, which investments shall be
made at the option and sole discretion of the Administrative Agent and at the
Borrower's risk and expense, such deposits shall not bear interest. Interest or
profits, if any, on such investments shall accumulate in the Cash Collateral
Account. Money in the Cash Collateral Account shall be applied by the
Administrative Agent to reimburse the Issuing Banks for LC Disbursements for
which they have not been reimbursed and, to the extent not so applied, shall be
held for the satisfaction of the reimbursement obligations of the Borrower for
the LC Exposure at such time or, if the maturity of the Loans has been
accelerated, be applied to satisfy other obligations of the Borrower and the
Subsidiaries under the Loan Documents and under the Swap Agreements entered into
with a Lender or Affiliate of a Lender. If the Borrower is required to provide
an amount of cash collateral hereunder as a result of the occurrence of an Event
of Default, such amount (to the extent not applied as aforesaid) shall be
returned to the Borrower within three Business Days after all Events of Default
have been cured or waived. If the Borrower is required to provide an amount of
cash collateral hereunder to secure Letters of Credit with expiry dates beyond
the Maturity Date, such amount (to the extent not applied as aforesaid) shall be
returned to the Borrower within three Business Days after the Letter of Credit
with the latest expiry date has expired and no further Letters of Credit are
outstanding. If the Borrower is required to provide an amount of cash collateral
hereunder as a result of the fact that the Revolving Credit Exposure exceeds the
total Commitments, such amount (to the extent not applied as aforesaid) shall be
returned to the Borrower within three Business Days after the date when the
Revolving Credit Exposures no longer exceed the total Commitments.

         Section 2.06. Funding of Borrowings.

                  (a)      Each Lender shall make each Loan to be made by it
hereunder on the proposed date thereof by wire transfer of immediately available
funds by 11:00 A.M., Dallas, Texas time, to the account of the Administrative
Agent most recently designated by it for such purpose by notice to the Lenders;
provided that Swingline Loans shall be made as provided in Section 2.04. The
Administrative Agent will make such Loans available to the Borrower by promptly
crediting the amounts so received, in like funds, to an account of the Borrower
maintained with the Administrative Agent in Dallas, Texas and designated by the
Borrower in the applicable Borrowing Request; provided that ABR Revolving Loans
made to finance the reimbursement of an LC Disbursement as provided in Section
2.05(e) shall be remitted by the Administrative Agent to the applicable Issuing
Bank.

                  (b)      Unless the Administrative Agent shall have received
notice from a Lender prior to the proposed date of any Borrowing that such
Lender will not make available to the Administrative Agent such Lender's share
of such Borrowing, the Administrative Agent may assume that such Lender has made
such share available on such date in accordance with paragraph (a) of this
Section and may, in reliance upon such assumption, make available to the
Borrower a corresponding amount. In such event, if a Lender has not in fact made
its share of the applicable Borrowing available to the Administrative Agent,
then the applicable Lender and the Borrower severally agree to pay to the
Administrative Agent forthwith on demand such corresponding amount with interest
thereon, for each day from and including the date such amount is made available
to the Borrower to but excluding the date of payment to the Administrative
Agent, at (i) in the case of such Lender, the greater of the Federal Funds
Effective Rate and a rate determined by the Administrative Agent in accordance
with banking industry rules on interbank compensation or (ii) in the case of the
Borrower, the interest rate applicable to ABR Loans. If such

CREDIT AGREEMENT, Page 22

<PAGE>

Lender pays such amount to the Administrative Agent, then such amount shall
constitute such Lender's Loan included in such Borrowing.

         Section 2.07. Interest Elections.

                  (a)      Each Revolving Borrowing initially shall be of the
Type specified in the applicable Borrowing Request and, in the case of a
Eurodollar Revolving Borrowing, shall have an initial Interest Period as
specified in such Borrowing Request. Thereafter, the Borrower may elect to
convert such Borrowing to a different Type or to continue such Borrowing and, in
the case of a Eurodollar Revolving Borrowing, may elect Interest Periods
therefor, all as provided in this Section. The Borrower may elect different
options with respect to different portions of the affected Borrowing, in which
case each such portion shall be allocated ratably among the Lenders holding the
Loans comprising such Borrowing, and the Loans comprising each such portion
shall be considered a separate Borrowing. This Section shall not apply to
Swingline Borrowings, which may not be converted or continued.

                  (b)      To make an election pursuant to this Section, the
Borrower shall notify the Administrative Agent of such election by telephone by
the time that a Borrowing Request would be required under Section 2.03 if the
Borrower were requesting a Revolving Borrowing of the Type resulting from such
election to be made on the effective date of such election. Each such telephonic
Interest Election Request shall be irrevocable and shall be confirmed promptly
by hand delivery or telecopy to the Administrative Agent of a written Interest
Election Request in a form approved by the Administrative Agent and signed by
the Borrower.

                  (c)      Each telephonic and written Interest Election Request
shall specify the following information in compliance with Section 2.02:

                           (i)      the Borrowing to which such Interest
Election Request applies and, if different options are being elected with
respect to different portions thereof, the portions thereof to be allocated to
each resulting Borrowing (in which case the information to be specified pursuant
to clauses (iii) and (iv) below shall be specified for each resulting
Borrowing);

                           (ii)     the effective date of the election made
pursuant to such Interest Election Request, which shall be a Business Day;

                           (iii)    whether the resulting Borrowing is to be an
ABR Borrowing or a Eurodollar Borrowing; and

                           (iv)     if the resulting Borrowing is a Eurodollar
Borrowing, the Interest Period to be applicable thereto after giving effect to
such election, which shall be a period contemplated by the definition of the
term "Interest Period".

If any such Interest Election Request requests a Eurodollar Borrowing but does
not specify an Interest Period, then the Borrower shall be deemed to have
selected an Interest Period of one month's duration.

                  (d)      Promptly following receipt of an Interest Election
Request, the Administrative Agent shall advise each Lender of the details
thereof and of such Lender's portion of each resulting Borrowing.

                  (e)      If the Borrower fails to deliver a timely Interest
Election Request with respect to a Eurodollar Revolving Borrowing prior to the
end of the Interest Period applicable thereto, then, unless such Borrowing is
repaid as provided herein, at the end of such Interest Period such Borrowing
shall be converted to an ABR Borrowing. Notwithstanding any contrary provision
hereof, if an Event of Default

CREDIT AGREEMENT, Page 23

<PAGE>

has occurred and is continuing and the Administrative Agent, at the request of
the Required Lenders, so notifies the Borrower, then, so long as an Event of
Default is continuing (i) no outstanding Revolving Borrowing may be converted to
or continued as a Eurodollar Borrowing and (ii) unless repaid, each Eurodollar
Revolving Borrowing shall be converted to an ABR Borrowing at the end of the
Interest Period applicable thereto.

         Section 2.08. Termination and Reduction of Commitments.

                  (a)      Unless previously terminated, the Commitments shall
terminate on the Maturity Date.

                  (b)      The Borrower may at any time terminate, or from time
to time reduce, the Commitments; provided that (i) each reduction of the
Commitments shall be in an amount that is an integral multiple of $5,000,000 and
not less than $5,000,000 and (ii) the Borrower shall not terminate or reduce the
Commitments if, after giving effect to any concurrent prepayment of the Loans in
accordance with Section 2.10, the Revolving Credit Exposures would exceed the
total Commitments.

                  (c)      The Borrower shall notify the Administrative Agent of
any election to terminate or reduce the Commitments under paragraph (b) of this
Section at least three Business Days prior to the effective date of such
termination or reduction, specifying such election and the effective date
thereof. Promptly following receipt of any notice, the Administrative Agent
shall advise the Lenders of the contents thereof. Each notice delivered by the
Borrower pursuant to this Section shall be irrevocable; provided that a notice
of termination of the Commitments delivered by the Borrower may state that such
notice is conditioned upon the effectiveness of other credit facilities, in
which case such notice may be revoked by the Borrower (by notice to the
Administrative Agent on or prior to the specified effective date) if such
condition is not satisfied. Any termination or reduction of the Commitments
shall be permanent. Each reduction of the Commitments shall be made ratably
among the Lenders in accordance with their respective Commitments.

         Section 2.09. Repayment of Loans; Evidence of Debt.

                  (a)      The Borrower hereby unconditionally promises to pay
(i) to the Administrative Agent for the account of each Lender the then unpaid
principal amount of each Revolving Loan on the Maturity Date and (ii) to the
Swingline Lender the then unpaid principal amount of each Swingline Loan on the
earlier of the Maturity Date and the first date after such Swingline Loan is
made that is the 15th or last day of a calendar month and is at least two
Business Days after such Swingline Loan is made; provided that on each date that
a Revolving Borrowing is made, the Borrower shall repay all Swingline Loans then
outstanding.

                  (b)      Each Lender shall maintain in accordance with its
usual practice an account or accounts evidencing the indebtedness of the
Borrower to such Lender resulting from each Loan made by such Lender, including
the amounts of principal and interest payable and paid to such Lender from time
to time hereunder.

                  (c)      The Administrative Agent shall maintain accounts in
which it shall record (i) the amount of each Loan made hereunder, the Class and
Type thereof and the Interest Period applicable thereto, (ii) the amount of any
principal or interest due and payable or to become due and payable from the
Borrower to each Lender hereunder and (iii) the amount of any sum received by
the Administrative Agent hereunder for the account of the Lenders and each
Lender's share thereof.

                  (d)      The entries made in the accounts maintained pursuant
to paragraph (b) or (c) of this Section shall be prima facie evidence of the
existence and amounts of the obligations recorded

CREDIT AGREEMENT, Page 24

<PAGE>

therein; provided that the failure of any Lender or the Administrative Agent to
maintain such accounts or any error therein shall not in any manner affect the
obligation of the Borrower to repay the Loans in accordance with the terms of
this Agreement.

                  (e)      Any Lender may request that Loans made by it be
evidenced by a promissory note. In such event, the Borrower shall prepare,
execute and deliver to such Lender a promissory note payable to the order of
such Lender (or, if requested by such Lender, to such Lender and its registered
assigns) and in a form approved by the Administrative Agent. Thereafter, the
Loans evidenced by such promissory note and interest thereon shall at all times
(including after assignment pursuant to Section 9.04) be represented by one or
more promissory notes in such form payable to the order of the payee named
therein (or, if such promissory note is a registered note, to such payee and its
registered assigns).

         Section 2.10. Prepayment of Loans.

                  (a)      The Borrower shall have the right at any time and
from time to time to prepay any Borrowing, in whole or in part without premium
or penalty except as provided in Section 2.15, subject to prior notice in
accordance with paragraph (c) of this Section. Each optional prepayment of the
Loans shall be in an amount that is an integral multiple of $100,000 and not
less than $1,000,000.

                  (b)      In the event and on such occasion that the Revolving
Credit Exposures exceed the total Commitments, the Borrower shall prepay
Revolving Borrowings or Swingline Borrowings (or, if no such Borrowings are
outstanding, deposit cash collateral in the Cash Collateral Account pursuant to
Section 2.05(j)) in an aggregate amount equal to such excess.

                  (c)      The Borrower shall notify the Administrative Agent
(and, in the case of prepayment of a Swingline Loan, the Swingline Lender) by
telephone (confirmed by telecopy) of any prepayment hereunder (i) in the case of
prepayment of a Eurodollar Revolving Borrowing, not later than 10:00 A.M.,
Dallas, Texas time, three Business Days before the date of prepayment, (ii) in
the case of prepayment of an ABR Revolving Borrowing, not later than 10:00 A.M.,
Dallas, Texas time, one Business Day before the date of prepayment or (iii) in
the case of prepayment of a Swingline Loan, not later than 11:00 A.M., Dallas,
Texas time, on the date of prepayment. Each such notice shall be irrevocable and
shall specify the prepayment date and the principal amount of each Borrowing or
portion thereof to be prepaid; provided that, if a notice of prepayment is given
in connection with a conditional notice of termination of the Commitments as
contemplated by Section 2.08, then such notice of prepayment may be revoked if
such notice of termination is revoked in accordance with Section 2.08. Promptly
following receipt of any such notice relating to a Revolving Borrowing, the
Administrative Agent shall advise the Lenders of the contents thereof. Each
partial prepayment of any Revolving Borrowing shall be in an amount that would
be permitted in the case of an advance of a Revolving Borrowing of the same Type
as provided in Section 2.02. Each prepayment of a Revolving Borrowing shall be
applied ratably to the Loans included in the prepaid Borrowing. Prepayments
shall be accompanied by accrued interest to the extent required by Section 2.12.

         Section 2.11. Fees.

                  (a)      The Borrower agrees to pay to the Administrative
Agent for the account of each Lender a commitment fee, which shall accrue at the
Applicable Rate on the daily amount of the unused Commitment of such Lender
during the Availability Period. Accrued commitment fees shall be payable in
arrears on the last day of March, June, September and December of each year and
on the date on which the Commitments terminate, commencing on the first such
date to occur after the date hereof. All commitment fees shall be computed on
the basis of a year of 360 days and shall be payable for the actual number of
days elapsed (including the first day but excluding the last day). For purposes
of computing

CREDIT AGREEMENT, Page 25

<PAGE>

commitment fees, a Commitment of a Lender shall be deemed to be used to the
extent of the outstanding Loans and LC Exposure of such Lender (and the
Swingline Exposure of such Lender shall be disregarded for such purpose).

                  (b)      The Borrower agrees to pay (i) to the Administrative
Agent for the account of each Lender a participation fee with respect to its
participations in Letters of Credit, which shall accrue at the same Applicable
Rate used to determine the interest rate applicable to Eurodollar Revolving
Loans on the average daily amount of such Lender's LC Exposure (excluding any
portion thereof attributable to unreimbursed LC Disbursements) during the period
from and including the Effective Date to but excluding the later of the date on
which such Lender's Commitment terminates and the date on which such Lender
ceases to have any LC Exposure, and (ii) to each Issuing Bank a fronting fee,
which shall accrue at the rate of 0.125% per annum on the average daily amount
of the LC Exposure (excluding any portion thereof attributable to unreimbursed
LC Disbursements) attributable to the Letters of Credit issued by such Issuing
Bank during the period from and including the Effective Date to but excluding
the later of the date of termination of the Commitments and the date on which
there ceases to be any such LC Exposure, as well as each Issuing Bank's standard
fees with respect to the issuance, amendment, renewal or extension of any Letter
of Credit or processing of drawings thereunder. Participation fees and fronting
fees accrued through and including the last day of March, June, September and
December of each year shall be payable on the third Business Day following such
last day, commencing on the first such date to occur after the Effective Date;
provided that all such fees shall be payable on the date on which the
Commitments terminate and any such fees accruing after the date on which the
Commitments terminate shall be payable on demand. Any other fees payable to an
Issuing Bank pursuant to this paragraph shall be payable within 10 days after
demand. All participation fees and fronting fees shall be computed on the basis
of a year of 360 days and shall be payable for the actual number of days elapsed
(including the first day but excluding the last day).

                  (c)      The Borrower agrees to pay to the Administrative
Agent, for its own account, fees payable in the amounts and at the times
separately agreed upon between the Borrower and the Administrative Agent.

                  (d)      All fees payable hereunder shall be paid on the dates
due, in immediately available funds, to the Administrative Agent (or to an
Issuing Bank, in the case of fees payable to it) for distribution, in the case
of commitment fees and participation fees, to the Lenders. Fees paid shall not
be refundable under any circumstances.

         Section 2.12. Interest.

                  (a)      The Loans comprising each ABR Borrowing (including
each Swingline Loan) shall bear interest at the Alternate Base Rate plus the
Applicable Rate.

                  (b)      The Loans comprising each Eurodollar Borrowing shall
bear interest at the Adjusted LIBO Rate for the Interest Period in effect for
such Borrowing plus the Applicable Rate.

                  (c)      Notwithstanding the foregoing, if any principal of or
interest on any Loan or any fee or other amount payable by the Borrower
hereunder is not paid when due, whether at stated maturity, upon acceleration or
otherwise, such overdue amount shall bear interest, after as well as before
judgment, at a rate per annum equal to (i) in the case of overdue principal of
any Loan, 2% plus the rate otherwise applicable to such Loan as provided in the
preceding paragraphs of this Section or (ii) in the case of any other amount, 2%
plus the rate applicable to ABR Loans as provided in paragraph (a) of this
Section.

CREDIT AGREEMENT, Page 26

<PAGE>

                  (d)      Accrued interest on each Loan shall be payable in
arrears on each Interest Payment Date for such Loan and, in the case of
Revolving Loans, upon termination of the Commitments; provided that (i) interest
accrued pursuant to paragraph (c) of this Section shall be payable on demand,
(ii) in the event of any repayment or prepayment of any Loan (other than a
prepayment of an ABR Revolving Loan prior to the end of the Availability
Period), accrued interest on the principal amount repaid or prepaid shall be
payable on the date of such repayment or prepayment and (iii) in the event of
any conversion of any Eurodollar Revolving Loan prior to the end of the current
Interest Period therefor, accrued interest on such Loan shall be payable on the
effective date of such conversion.

                  (e)      All interest hereunder shall be computed on the basis
of a year of 360 days, except that interest computed by reference to the
Alternate Base Rate at times when the Alternate Base Rate is based on the Prime
Rate shall be computed on the basis of a year of 365 days (or 366 days in a leap
year) or unless such calculation would result in a usurious rate, in which case
interest shall be calculated on the basis of a year of 365 days (or 366 days in
a leap year), and in each case shall be payable for the actual number of days
elapsed (including the first day but excluding the last day). The applicable
Alternate Base Rate or Adjusted LIBO Rate shall be determined by the
Administrative Agent, and such determination shall be conclusive absent manifest
error.

         Section 2.13. Alternate Rate of Interest. If prior to the commencement
of any Interest Period for a Eurodollar Borrowing:

                  (a)      the Administrative Agent determines (which
determination shall be conclusive absent manifest error) that adequate and
reasonable means do not exist for ascertaining the Adjusted LIBO Rate for such
Interest Period; or

                  (b)      the Administrative Agent is advised by the Required
Lenders that the Adjusted LIBO Rate for such Interest Period will not adequately
and fairly reflect the cost to such Lenders (or Lender) of making or maintaining
their Loans (or its Loan) included in such Borrowing for such Interest Period;

then the Administrative Agent shall give notice thereof to the Borrower and the
Lenders by telephone or telecopy as promptly as practicable thereafter and,
until the Administrative Agent notifies the Borrower and the Lenders that the
circumstances giving rise to such notice no longer exist, (i) any Interest
Election Request that requests the conversion of any Revolving Borrowing to, or
continuation of any Revolving Borrowing as, a Eurodollar Borrowing shall be
ineffective, and (ii) if any Borrowing Request requests a Eurodollar Revolving
Borrowing, such Borrowing shall be made as an ABR Borrowing.

         Section 2.14. Increased Costs.

                  (a)      If any Change in Law shall:

                           (i)      impose, modify or deem applicable any
reserve, special deposit or similar requirement against assets of, deposits with
or for the account of, or credit extended by, any Lender (except any such
reserve requirement reflected in the Adjusted LIBO Rate) or any Issuing Bank; or

                           (ii)     impose on any Lender or any Issuing Bank or
the London interbank market any other condition affecting this Agreement or
Eurodollar Loans made by such Lender or any Letter of Credit or participation
therein;

and the result of any of the foregoing shall be to increase the cost to such
Lender of making or maintaining any Eurodollar Loan (or of maintaining its
obligation to make any such Loan) or to increase

CREDIT AGREEMENT, Page 27

<PAGE>

the cost to such Lender or an Issuing Bank of participating in, issuing or
maintaining any Letter of Credit or to reduce the amount of any sum received or
receivable by such Lender or an Issuing Bank hereunder (whether of principal,
interest or otherwise), then the Borrower will pay to such Lender or the
applicable Issuing Bank, as the case may be, such additional amount or amounts
as will compensate such Lender or such Issuing Bank, as the case may be, for
such additional costs incurred or reduction suffered.

                  (b)      If any Lender or any Issuing Bank determines that any
Change in Law regarding capital requirements has or would have the effect of
reducing the rate of return on such Lender's or such Issuing Bank's capital or
on the capital of such Lender's or such Issuing Bank's holding company, if any,
as a consequence of this Agreement or the Loans made by, or participations in
Letters of Credit held by, such Lender, or the Letters of Credit issued by an
Issuing Bank, to a level below that which such Lender or applicable Issuing Bank
or such Lender's or such Issuing Bank's holding company could have achieved but
for such Change in Law (taking into consideration such Lender's or such Issuing
Bank's policies and the policies of such Lender's or such Issuing Bank's holding
company with respect to capital adequacy), then from time to time the Borrower
will pay to such Lender or such Issuing Bank, as the case may be, such
additional amount or amounts as will compensate such Lender or such Issuing Bank
or such Lender's or such Issuing Bank's holding company for any such reduction
suffered.

                  (c)      A certificate of a Lender or an Issuing Bank setting
forth the amount or amounts necessary to compensate such Lender or such Issuing
Bank or its holding company, as the case may be, as specified in paragraph (a)
or (b) of this Section shall be delivered to the Borrower and shall be
conclusive absent manifest error. The Borrower shall pay such Lender or such
Issuing Bank, as the case may be, the amount shown as due on any such
certificate within 10 days after receipt thereof.

                  (d)      Failure or delay on the part of any Lender or any
Issuing Bank to demand compensation pursuant to this Section shall not
constitute a waiver of such Lender's or such Issuing Bank's right to demand such
compensation; provided that the Borrower shall not be required to compensate a
Lender or an Issuing Bank pursuant to this Section for any increased costs or
reductions incurred more than 270 days prior to the date that such Lender or
such Issuing Bank, as the case may be, notifies the Borrower of the Change in
Law giving rise to such increased costs or reductions and of such Lender's or
such Issuing Bank's intention to claim compensation therefor; provided further
that, if the Change in Law giving rise to such increased costs or reductions is
retroactive, then the 270-day period referred to above shall be extended to
include the period of retroactive effect thereof.

         Section 2.15. Break Funding Payments. In the event of (a) the payment
of any principal of any Eurodollar Loan other than on the last day of an
Interest Period applicable thereto (including as a result of an Event of
Default), (b) the conversion of any Eurodollar Loan other than on the last day
of the Interest Period applicable thereto, (c) the failure to borrow, convert,
continue or prepay any Eurodollar Loan on the date specified in any notice
delivered pursuant hereto (regardless of whether such notice may be revoked
under Section 2.10(c) and is revoked in accordance therewith), or (d) the
assignment of any Eurodollar Loan other than on the last day of the Interest
Period applicable thereto as a result of a request by the Borrower pursuant to
Section 2.18, then, in any such event, the Borrower shall compensate each Lender
for the loss, cost and expense attributable to such event. In the case of a
Eurodollar Loan, such loss, cost or expense to any Lender shall be deemed to
include an amount determined by such Lender to be the excess, if any, of (i) the
amount of interest which would have accrued on the principal amount of such Loan
had such event not occurred, at the Adjusted LIBO Rate that would have been
applicable to such Loan, for the period from the date of such event to the last
day of the then current Interest Period therefor (or, in the case of a failure
to borrow, convert or continue, for the period that would have been the Interest
Period for such Loan), over (ii) the amount of interest which would accrue on
such principal amount for such period at the interest rate which such Lender
would bid were it to bid, at the commencement of such period, for dollar
deposits of a comparable amount and period from other banks

CREDIT AGREEMENT, Page 28

<PAGE>

in the eurodollar market. A certificate of any Lender setting forth any amount
or amounts that such Lender is entitled to receive pursuant to this Section
shall be delivered to the Borrower and shall be conclusive absent manifest
error. The Borrower shall pay such Lender the amount shown as due on any such
certificate within 10 days after receipt thereof.

         Section 2.16. Taxes.

                  (a)      Any and all payments by or on account of any
obligation of the Borrower hereunder shall be made free and clear of and without
deduction for any Indemnified Taxes or Other Taxes; provided that if the
Borrower shall be required to deduct any Indemnified Taxes or Other Taxes from
such payments, then (i) the sum payable shall be increased as necessary so that
after making all required deductions (including deductions applicable to
additional sums payable under this Section) the Administrative Agent, Lender or
Issuing Bank (as the case may be) receives an amount equal to the sum it would
have received had no such deductions been made, (ii) the Borrower shall make
such deductions and (iii) the Borrower shall pay the full amount deducted to the
relevant Governmental Authority in accordance with applicable law.

                  (b)      In addition, the Borrower shall pay any Other Taxes
to the relevant Governmental Authority in accordance with applicable law.

                  (c)      The Borrower shall indemnify the Administrative
Agent, each Lender and each Issuing Bank, within 10 days after written demand
therefor, for the full amount of any Indemnified Taxes or Other Taxes paid by
the Administrative Agent, such Lender or such Issuing Bank, as the case may be,
on or with respect to any payment by or on account of any obligation of the
Borrower hereunder (including Indemnified Taxes or Other Taxes imposed or
asserted on or attributable to amounts payable under this Section) and any
penalties, interest and reasonable expenses arising therefrom or with respect
thereto, whether or not such Indemnified Taxes or Other Taxes were correctly or
legally imposed or asserted by the relevant Governmental Authority. A
certificate as to the amount of such payment or liability delivered to the
Borrower by a Lender or an Issuing Bank, or by the Administrative Agent on its
own behalf or on behalf of a Lender or an Issuing Bank, shall be conclusive
absent manifest error.

                  (d)      As soon as practicable after any payment of
Indemnified Taxes or Other Taxes by the Borrower to a Governmental Authority,
the Borrower shall deliver to the Administrative Agent the original or a
certified copy of a receipt issued by such Governmental Authority evidencing
such payment, a copy of the return reporting such payment or other evidence of
such payment reasonably satisfactory to the Administrative Agent.

                  (e)      Any Foreign Lender that is entitled to an exemption
from or reduction of withholding tax under the law of the jurisdiction in which
the Borrower is located, or any treaty to which such jurisdiction is a party,
with respect to payments under this Agreement shall deliver to the Borrower
(with a copy to the Administrative Agent), at the time or times prescribed by
applicable law, such properly completed and executed documentation prescribed by
applicable law or reasonably requested by the Borrower as will permit such
payments to be made without withholding or at a reduced rate.

                  (f)      If the Administrative Agent or a Lender determines,
in its sole discretion, that it has received a refund of any Taxes or Other
Taxes as to which it has been indemnified by the Borrower or with respect to
which the Borrower has paid additional amounts pursuant to this Section 2.16, it
shall pay over such refund to the Borrower (but only to the extent of indemnity
payments made, or additional amounts paid, by the Borrower under this Section
2.16 with respect to the Taxes or Other Taxes giving rise to such refund), net
of all out-of-pocket expenses of the Administrative Agent or such Lender and
without interest (other than any interest paid by the relevant Governmental
Authority with respect to such refund); provided, that the Borrower, upon the
request of the Administrative Agent or such Lender, agrees

CREDIT AGREEMENT, Page 29

<PAGE>

to repay the amount paid over to the Borrower (plus any penalties, interest or
other charges imposed by the relevant Governmental Authority) to the
Administrative Agent or such Lender in the event the Administrative Agent or
such Lender is required to repay such refund to such Governmental Authority.
This Section shall not be construed to require the Administrative Agent or any
Lender to make available its tax returns (or any other information relating to
its taxes which it deems confidential) to the Borrower or any other Person.

         Section 2.17. Payments Generally; Pro Rata Treatment; Sharing of
Set-offs.

                  (a)      The Borrower shall make each payment required to be
made by it hereunder (whether of principal, interest, fees or reimbursement of
LC Disbursements, or of amounts payable under Section 2.14, 2.15 or 2.16, or
otherwise) prior to 11:00 A.M., Dallas, Texas time, on the date when due, in
immediately available funds, without set-off or counterclaim. Any amounts
received after such time on any date may, in the discretion of the
Administrative Agent, be deemed to have been received on the next succeeding
Business Day for purposes of calculating interest thereon. All such payments
shall be made to the Administrative Agent at its offices in New York, New York,
except payments to be made directly to an Issuing Bank or the Swingline Lender
as expressly provided herein and except that payments pursuant to Sections 2.14,
2.15, 2.16 and 9.03 shall be made directly to the Persons entitled thereto. The
Administrative Agent shall distribute any such payments received by it and any
payments received under the terms of the Subsidiary Guaranty for the account of
any other Person to the appropriate recipient promptly following receipt
thereof. If any payment hereunder shall be due on a day that is not a Business
Day, the date for payment shall be extended to the next succeeding Business Day,
and, in the case of any payment accruing interest, interest thereon shall be
payable for the period of such extension. All payments hereunder shall be made
in dollars.

                  (b)      If at any time insufficient funds are received from
the Borrower by and available to the Administrative Agent to pay fully all
amounts of principal, unreimbursed LC Disbursements, interest and fees then due
hereunder, such funds shall be applied (i) first, towards payment of interest
and fees then due hereunder, ratably among the parties entitled thereto in
accordance with the amounts of interest and fees then due to such parties, and
(ii) second, towards payment of principal and unreimbursed LC Disbursements then
due hereunder, ratably among the parties entitled thereto in accordance with the
amounts of principal and unreimbursed LC Disbursements then due to such parties.
If at any time funds are received by the Administrative Agent from a Guarantor
under the Subsidiary Guaranty that are insufficient to pay fully all amounts of
principal, unreimbursed LC Disbursements, interest and fees then due hereunder
and all amounts due under any Swap Agreement the Borrower or a Subsidiary has
entered into with a Lender or an Affiliate of a Lender, such funds shall be
applied: (i) first, towards payment of interest and fees then due, ratably among
the parties entitled thereto in accordance with the amounts of interest and fees
then due to such parties, and (ii) second, towards payment of principal,
unreimbursed LC Disbursements and the amounts owing under such Swap Agreements
then due, ratably among the parties entitled thereto in accordance with the
amounts thereof.

                  (c)      If any Lender shall, by exercising any right of
set-off or counterclaim or otherwise, obtain payment in respect of any principal
of or interest on any of its Revolving Loans or participations in LC
Disbursements or Swingline Loans resulting in such Lender receiving payment of a
greater proportion of the aggregate amount of its Revolving Loans and
participations in LC Disbursements and Swingline Loans and accrued interest
thereon than the proportion received by any other Lender, then the Lender
receiving such greater proportion shall purchase (for cash at face value)
participations in the Revolving Loans and participations in LC Disbursements and
Swingline Loans of other Lenders to the extent necessary so that the benefit of
all such payments shall be shared by the Lenders ratably in accordance with the
aggregate amount of principal of and accrued interest on their respective
Revolving Loans and participations in LC Disbursements and Swingline Loans;
provided that

CREDIT AGREEMENT, Page 30

<PAGE>

(i) if any such participations are purchased and all or any portion of the
payment giving rise thereto is recovered, such participations shall be rescinded
and the purchase price restored to the extent of such recovery, without
interest, and (ii) the provisions of this paragraph shall not be construed to
apply to any payment made by the Borrower pursuant to and in accordance with the
express terms of this Agreement or any payment obtained by a Lender as
consideration for the assignment of or sale of a participation in any of its
Loans or participations in LC Disbursements to any assignee or participant,
other than to the Borrower or any Subsidiary or Affiliate thereof (as to which
the provisions of this paragraph shall apply). The Borrower consents to the
foregoing and agrees, to the extent it may effectively do so under applicable
law, that any Lender acquiring a participation pursuant to the foregoing
arrangements may exercise against the Borrower rights of set-off and
counterclaim with respect to such participation as fully as if such Lender were
a direct creditor of the Borrower in the amount of such participation.

                  (d)      Unless the Administrative Agent shall have received
notice from the Borrower prior to the date on which any payment is due to the
Administrative Agent for the account of the Lenders or an Issuing Bank hereunder
that the Borrower will not make such payment, the Administrative Agent may
assume that the Borrower has made such payment on such date in accordance
herewith and may, in reliance upon such assumption, distribute to the Lenders or
the applicable Issuing Bank, as the case may be, the amount due. In such event,
if the Borrower has not in fact made such payment, then each of the Lenders or
the applicable Issuing Bank, as the case may be, severally agrees to repay to
the Administrative Agent forthwith on demand the amount so distributed to such
Lender or such Issuing Bank with interest thereon, for each day from and
including the date such amount is distributed to it to but excluding the date of
payment to the Administrative Agent, at the greater of the Federal Funds
Effective Rate and a rate determined by the Administrative Agent in accordance
with banking industry rules on interbank compensation.

                  (e)      If any Lender shall fail to make any payment required
to be made by it pursuant to Section 2.04(c), 2.05(d) or (e), 2.06(b) or
2.17(d), then the Administrative Agent may, in its discretion (notwithstanding
any contrary provision hereof), apply any amounts thereafter received by the
Administrative Agent for the account of such Lender to satisfy such Lender's
obligations under such Sections until all such unsatisfied obligations are fully
paid.

         Section 2.18. Mitigation Obligations; Replacement of Lenders.

                  (a)      If any Lender requests compensation under Section
2.14, or if the Borrower is required to pay any additional amount to any Lender
or any Governmental Authority for the account of any Lender pursuant to Section
2.16, then such Lender shall use reasonable efforts to designate a different
lending office for funding or booking its Loans hereunder or to assign its
rights and obligations hereunder to another of its offices, branches or
affiliates, if, in the judgment of such Lender, such designation or assignment
(i) would eliminate or reduce amounts payable pursuant to Section 2.14 or 2.16,
as the case may be, in the future and (ii) would not subject such Lender to any
unreimbursed cost or expense and would not otherwise be disadvantageous to such
Lender. The Borrower hereby agrees to pay all reasonable costs and expenses
incurred by any Lender in connection with any such designation or assignment.

                  (b)      If any Lender requests compensation under Section
2.14, or if the Borrower is required to pay any additional amount to any Lender
or any Governmental Authority for the account of any Lender pursuant to Section
2.16, or if any Lender defaults in its obligation to fund Loans hereunder, then
the Borrower may, at its sole expense and effort, upon notice to such Lender and
the Administrative Agent, require such Lender to assign and delegate, without
recourse (in accordance with and subject to the restrictions contained in
Section 9.04), all its interests, rights and obligations under this Agreement to
an assignee that shall assume such obligations (which assignee may be another
Lender, if a Lender

CREDIT AGREEMENT, Page 31

<PAGE>

accepts such assignment); provided that (i) the Borrower shall have received the
prior written consent of the Administrative Agent which consent shall not
unreasonably be withheld, (ii) such Lender shall have received payment of an
amount equal to the outstanding principal of its Loans and participations in LC
Disbursements and Swingline Loans, accrued interest thereon, accrued fees and
all other amounts payable to it hereunder, from the assignee (to the extent of
such outstanding principal and accrued interest and fees) or the Borrower (in
the case of all other amounts) and (iii) in the case of any such assignment
resulting from a claim for compensation under Section 2.14 or payments required
to be made pursuant to Section 2.16, such assignment will result in a reduction
in such compensation or payments. A Lender shall not be required to make any
such assignment and delegation if, prior thereto, as a result of a waiver by
such Lender or otherwise, the circumstances entitling the Borrower to require
such assignment and delegation cease to apply.

                                  ARTICLE III.

                         Representations and Warranties

         The Borrower represents and warrants to the Lenders that:

         Section 3.01. Organization; Powers. Each of the Borrower and the
Subsidiaries is duly organized, validly existing and in good standing under the
laws of the jurisdiction of its organization, has all requisite corporate,
limited liability company or partnership power and authority to carry on its
business as now conducted and, except where the failure to do so, individually
or in the aggregate, could not reasonably be expected to result in a Material
Adverse Effect, is qualified to do business in, and is in good standing in,
every jurisdiction where such qualification is required.

         Section 3.02. Authorization; Enforceability. The Transactions to be
entered into by the Borrower and each Guarantor are within such party's
corporate, limited liability company or partnership powers and have been duly
authorized by all necessary corporate, company or partnership action and, if
required, stockholder, member, manager or partner action. This Agreement has
been duly executed and delivered by the Borrower and constitutes a legal, valid
and binding obligation of the Borrower, enforceable in accordance with its
terms, subject to applicable bankruptcy, insolvency, reorganization, moratorium
or other laws affecting creditors' rights generally and subject to general
principles of equity, regardless of whether considered in a proceeding in equity
or at law. The Subsidiary Guaranty has been duly executed and delivered by the
Guarantors and constitutes a legal, valid and binding obligation of each such
Guarantor, enforceable in accordance with its terms, subject to applicable
bankruptcy, insolvency, reorganization, moratorium or other laws affecting
creditors' rights generally and subject to general principles of equity,
regardless of whether considered in a proceeding in equity or at law.

         Section 3.03. Governmental Approvals; No Conflicts. The Transactions
(a) do not require any consent or approval of, registration or filing with, or
any other action by, any Governmental Authority, except such as have been
obtained or made and are in full force and effect or are not yet required, (b)
will not violate any applicable law or regulation or the charter, by-laws or
other organizational documents of the Borrower or any of the Subsidiaries or any
order of any Governmental Authority, (c) will not violate or result in a default
under any indenture, agreement or other instrument binding upon the Borrower or
any of the Subsidiaries or its assets, or give rise to a right thereunder to
require any payment to be made by the Borrower or any of the Subsidiaries, and
(d) will not result in the creation or imposition of any Lien on any asset of
the Borrower or any of the Subsidiaries.

         Section 3.04. Financial Condition; No Material Adverse Change.

CREDIT AGREEMENT, Page 32

<PAGE>

                  (a)      The Borrower has heretofore furnished to the Lenders
its consolidated balance sheet and statements of income, stockholders equity and
cash flows (i) as of and for the fiscal year ended March 31, 2003, reported by
independent public accountants, and (ii) as of and for the fiscal quarter and
the portion of the fiscal year ended September 30, 2003, certified by its chief
financial officer. Such financial statements present fairly, in all material
respects, the financial position and results of operations and cash flows of the
Borrower and its consolidated Subsidiaries as of such dates and for such periods
in accordance with GAAP, subject to year-end audit adjustments and the absence
of footnotes in the case of the statements referred to in clause (ii) above.

                  (b)      Since September 30, 2003, there has been no material
adverse change in the business, assets, results of operations, or financial
condition of the Borrower and the Subsidiaries, taken as a whole.

         Section 3.05. Properties.

                  (a)      Each of the Borrower and the Subsidiaries has good
title to, or valid leasehold interests in, all its real and personal property
material to its business, free and clear of all Liens except for (i) minor
defects in title that do not interfere with its ability to conduct its business
as currently conducted or to utilize such properties for their intended
purposes; (ii) as of the Effective Date, Permitted Encumbrances and other Liens
disclosed on Schedule 3.05 or otherwise permitted by Section 6.02(d) or Section
6.02(f), and (iii) at all times after the Effective Date, as permitted by
Section 6.02.

                  (b)      Each of the Borrower and the Subsidiaries owns, or is
licensed to use, all trademarks, tradenames, copyrights, patents and other
intellectual property the failure to own or be licensed to use could reasonably
be expected to result in a Material Adverse Effect, and the use thereof by the
Borrower and the Subsidiaries does not infringe upon the rights of any other
Person, except for any such infringements that, individually or in the
aggregate, could not reasonably be expected to result in a Material Adverse
Effect.

         Section 3.06. Litigation and Environmental Matters.

                  (a)      There are no actions, suits or proceedings by or
before any arbitrator or Governmental Authority pending against or, to the
knowledge of the Borrower, threatened against or affecting the Borrower or any
of the Subsidiaries(i) as to which there is a reasonable expectation of an
adverse determination and that, if adversely determined, could reasonably be
expected, individually or in the aggregate, to result in a Material Adverse
Effect (other than the Disclosed Matters) or (ii) that involve this Agreement or
the Transactions.

                  (b)      Except for the Disclosed Matters and except with
respect to any other matters that, individually or in the aggregate, could not
reasonably be expected to result in a Material Adverse Effect, neither the
Borrower nor any of the Subsidiaries (i) has failed to comply with any
Environmental Law or to obtain, maintain or comply with any permit, license or
other approval required under any Environmental Law, (ii) has become subject to
any Environmental Liability, (iii) has received notice of any claim with respect
to any Environmental Liability or (iv) knows of any basis for any Environmental
Liability.

                  (c)      Since the date of this Agreement, there has been no
change in the status of the Disclosed Matters that, individually or in the
aggregate, has resulted in, or materially increased the likelihood of, a
Material Adverse Effect.

         Section 3.07. Compliance with Laws and Agreements. Each of the Borrower
and the Subsidiaries is in compliance with all laws, regulations and orders of
any Governmental Authority

CREDIT AGREEMENT, Page 33

<PAGE>

applicable to it or its property and all indentures, agreements and other
instruments binding upon it or its property, except where the failure to do so,
individually or in the aggregate, could not reasonably be expected to result in
a Material Adverse Effect. No Default has occurred and is continuing.

         Section 3.08. Investment and Holding Company Status. Neither the
Borrower nor any of the Subsidiaries is (a) an "investment company" as defined
in, or subject to regulation under, the Investment Company Act of 1940 or (b) a
"holding company" as defined in, or subject to regulation under, the Public
Utility Holding Company Act of 1935.

         Section 3.09. Taxes. Each of the Borrower and the Subsidiaries has
timely filed or caused to be filed all Tax returns and reports required to have
been filed and has paid or caused to be paid all Taxes required to have been
paid by it, except (a) Taxes that are being contested in good faith by
appropriate proceedings and for which the Borrower or such Subsidiary, as
applicable, has set aside on its books adequate reserves or (b) to the extent
that the failure to do so could not reasonably be expected to result in a
Material Adverse Effect.

         Section 3.10. ERISA. No ERISA Event has occurred or is reasonably
expected to occur that, when taken together with all other such ERISA Events for
which liability is reasonably expected to occur, could reasonably be expected to
result in a Material Adverse Effect. The present value of all accumulated
benefit obligations under each Plan (based on the assumptions used for purposes
of Statement of Financial Accounting Standards No. 87) did not, as of the date
of the most recent financial statements reflecting such amounts, exceed by more
than $2,500,000 the fair market value of the assets of such Plan, and the
present value of all accumulated benefit obligations of all underfunded Plans
(based on the assumptions used for purposes of Statement of Financial Accounting
Standards No. 87) did not, as of the date of the most recent financial
statements reflecting such amounts, exceed by more than $10,000,000 the fair
market value of the assets of all such underfunded Plans.

         Section 3.11. Disclosure. Neither the Information Memorandum nor any of
the other reports, financial statements, certificates or other information
furnished by or on behalf of the Borrower to the Administrative 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 Borrower represents only that such
information was prepared in good faith based upon assumptions believed to be
reasonable at the time.

         Section 3.12. Subsidiaries. Schedule 3.12 contains an accurate list of
all Subsidiaries of the Borrower as of the Effective Date, setting forth their
respective jurisdictions of organization, whether such Subsidiary is a Material
Subsidiary, and the percentage of their respective capital stock or other Equity
Interests owned directly by the Borrower and each other Subsidiary. All of the
issued and outstanding shares of capital stock or other Equity Interests of such
Subsidiaries have been duly authorized and issued and are fully paid and
non-assessable. There are no outstanding subscriptions, options, warrants,
calls, or rights (including preemptive rights) to acquire, and no outstanding
securities or instruments convertible into, any Equity Interests of any
Subsidiary.

         Section 3.13. Indebtedness. The Borrower has no Indebtedness, except,
as of the Effective Date, as reflected on Schedule 3.13 or otherwise permitted
by clauses (c), (d), (f), (h), (i), (j), (k), or (l)(ii) of Section 6.01 and, at
all times after the Effective Date, as permitted by Section 6.01. As of the
Effective Date, the Non-Guarantor Amount does not exceed $10,000,000.

         Section 3.14. Solvency. Immediately after the consummation of the
Transactions to occur on the Effective Date and immediately following the making
of each Loan and after giving effect to the

CREDIT AGREEMENT, Page 34

<PAGE>

application of the proceeds of such Loans, (a) the fair value of the assets of
Borrower and each Subsidiary, at a fair valuation, will exceed its debts and
liabilities, subordinated, contingent or otherwise; (b) the present fair
saleable value of the property of each such party will be greater than the
amount that will be required to pay the probable liability of its debts and
other liabilities, subordinated, contingent or otherwise, as such debts and
other liabilities become absolute and matured; (c) each such party will be able
to pay its debts and liabilities, subordinated, contingent or otherwise, as such
debts and liabilities become absolute and matured; and (d) each such party will
not have unreasonably small capital with which to conduct the business in which
it is engaged as such business is now conducted and is proposed to be conducted
following the Effective Date. The term "fair value" means the amount at which
the applicable assets would change hands between a willing buyer and a willing
seller within a reasonable time, each having reasonable knowledge of the
relevant facts, neither being under any compulsion to act, with equity to both
and "present fair saleable value" means the amount that may be realized if the
applicable company's aggregate assets are sold with reasonable promptness in an
arm's length transaction under present conditions for the sale of a comparable
business enterprises.

         Section 3.15. Margin Securities. Neither the Borrower nor any
Subsidiary is engaged principally, or as one of its important activities, in the
business of extending credit for the purpose of purchasing or carrying margin
stock (within the meaning of Regulations U or X of the Board of Governors of the
Federal Reserve System), and, except for the repurchases of the Borrower's
capital stock in accordance with the limitations in Section 6.06, no part of the
proceeds of any Loan will be used to purchase or carry any margin stock or to
extend credit to others for the purpose of purchasing or carrying margin stock.

                                   ARTICLE IV.

                                   Conditions

         Section 4.01. Effective Date. The obligations of the Lenders to make
Loans and of JPMorgan Chase Bank to issue Letters of Credit hereunder shall not
become effective until the date on which each of the following conditions is
satisfied (or waived in accordance with Section 9.02):

                  (a)      The Administrative Agent (or its counsel) shall have
received from each party hereto either (i) a counterpart of this Agreement
signed on behalf of such party or (ii) written evidence satisfactory to the
Administrative Agent (which may include telecopy transmission of a signed
signature page of this Agreement) that such party has signed a counterpart of
this Agreement.

                  (b)      The Administrative Agent shall have received a
favorable written opinion (addressed to the Administrative Agent and the Lenders
and dated the Effective Date) of counsel for the Borrower and the Guarantors,
substantially in the form of Exhibit B, and covering such other matters relating
to the Borrower, the Guarantors, this Agreement or the Transactions as the
Required Lenders shall reasonably request. The Borrower hereby requests such
counsel to deliver such opinion.

                  (c)      The Administrative Agent shall have received a fully
executed copy of the Subsidiary Guaranty.

                  (d)      The Administrative Agent shall have received a
promissory note payable to PNC Bank, N.A. in form and substance satisfactory to
the Administrative Agent executed by the Borrower.

                  (e)      The Administrative Agent shall have received such
documents and certificates as the Administrative Agent or its counsel may
reasonably request relating to the organization, existence and good standing of
the Borrower and the Guarantors, the authorization of the Transactions and any
other

CREDIT AGREEMENT, Page 35

<PAGE>

legal matters relating to the Borrower, the Guarantors, this Agreement or the
Transactions, all in form and substance reasonably satisfactory to the
Administrative Agent and its counsel.

                  (f)      The Administrative Agent shall have received a
certificate, dated the Effective Date and signed by the President, a Vice
President or a Financial Officer of the Borrower, confirming compliance with the
conditions set forth in paragraphs (a) and (b) of Section 4.02.

                  (g)      The Administrative Agent shall have received all fees
and other amounts due and payable by Borrower on or prior to the Effective Date
hereunder or under the Fee Letter between Borrower and Administrative Agent
dated October 3, 2003, including, to the extent invoiced, reimbursement or
payment of all out-of-pocket expenses required to be reimbursed or paid by the
Borrower hereunder.

                  (h)      All commitments under the Prior Credit Agreement
shall have been terminated.

The Administrative Agent shall notify the Borrower and the Lenders of the
Effective Date, and such notice shall be conclusive and binding. Notwithstanding
the foregoing, the obligations of the Lenders to make Loans and of JPMorgan
Chase Bank to issue Letters of Credit hereunder shall not become effective
unless each of the foregoing conditions is satisfied (as evidenced by the
Administrative Agent's notice pursuant to the immediately preceding sentence) or
waived pursuant to Section 9.02, at or prior to 3:00 P.M., Dallas, Texas time,
on December 31, 2003 (and, in the event such conditions are not so satisfied or
waived, the Commitments shall terminate at such time).

The Borrower and each Lender that has an existing "Commitment" under the Prior
Credit Agreement agree that, as of the Effective Date: (a) all commitments under
such agreement are terminated in their entirety and (b) the Lenders shall have
no further obligation to lend to the Borrower under such agreement. By its
execution of this Agreement, each Lender party to the Prior Credit Agreement
hereby waives the five Business Day notice of termination of the "Aggregate
Commitment" as set forth in Section 2.5 of such agreement.

         Section 4.02. Each Credit Event. The obligation of each Lender to make
a Loan on the occasion of any Borrowing, and of an Issuing Bank to issue, amend,
renew or extend any Letter of Credit, is subject to the satisfaction of the
following conditions:

                  (a)      The representations and warranties of the Borrower
set forth in this Agreement shall be true and correct in all material respects
on and as of the date of such Borrowing or the date of issuance, amendment,
renewal or extension of such Letter of Credit, as applicable, except to the
extent any such representation or warranty is stated to relate solely to an
earlier date, in which case such representation or warranty shall be true and
correct in all material respects on and as of such earlier date.

                  (b)      At the time of and immediately after giving effect to
such Borrowing or the issuance, amendment, renewal or extension of such Letter
of Credit, as applicable, no Default shall have occurred and be continuing.

Each Borrowing and each issuance, amendment, renewal or extension of a Letter of
Credit shall be deemed to constitute a representation and warranty by the
Borrower on the date thereof as to the matters specified in paragraphs (a) and
(b) of this Section.

         Section 4.03. Special Dividend. The obligation of each Lender to make a
Loan the proceeds of which will be used to pay the Special Dividend, is subject
to the satisfaction of the following conditions:

CREDIT AGREEMENT, Page 36

<PAGE>

                  (a)      the aggregate amount of the Special Dividend shall
not exceed $115,000,000; and

                  (b)      all consents and approvals required to be obtained by
Borrower from any Governmental Authority or other Person in connection with the
payment of the Special Dividend shall have been obtained.

The Borrowing of the Loans, the proceeds of which are used to pay the Special
Dividend, shall be deemed to constitute a representation and warranty by the
Borrower on the date thereof as to the matters specified in paragraphs (a) and
(b) of this Section.

                                   ARTICLE V.

                              Affirmative Covenants

         Until the Commitments have expired or been terminated and the principal
of and interest on each Loan and all fees payable hereunder shall have been paid
in full and all Letters of Credit shall have expired or terminated and all LC
Disbursements shall have been reimbursed, the Borrower covenants and agrees with
the Lenders that:

         Section 5.01. Financial Statements; Ratings Change and Other
Information. The Borrower will furnish to the Administrative Agent and each
Lender:

                  (a)      within 120 days after the end of each fiscal year of
the Borrower, its audited consolidated balance sheet and related statements of
operations, stockholders' equity and cash flows as of the end of and for such
year, setting forth in each case in comparative form the figures for the
previous fiscal year, all reported on by independent public accountants of
recognized national standing (without a "going concern" or like qualification or
exception and without any qualification or exception as to the scope of such
audit) to the effect that such consolidated financial statements present fairly
in all material respects the financial condition and results of operations of
the Borrower and its consolidated Subsidiaries on a consolidated basis in
accordance with GAAP consistently applied;

                  (b)      within 60 days after the end of each of the first
three fiscal quarters of each fiscal year of the Borrower, its consolidated
balance sheet and related statements of operations, stockholders' equity and
cash flows as of the end of and for such fiscal quarter and the then elapsed
portion of the fiscal year, setting forth in each case in comparative form the
figures for the corresponding period or periods of (or, in the case of the
balance sheet, as of the end of) the previous fiscal year, all certified by one
of its Financial Officers as presenting fairly in all material respects the
financial condition and results of operations of the Borrower and its
consolidated Subsidiaries on a consolidated basis in accordance with GAAP
consistently applied, subject to normal year-end audit adjustments and the
absence of footnotes;

                  (c)      concurrently with any delivery of financial
statements under clause (a) or (b) above, a certificate of a Financial Officer
of the Borrower (i) certifying as to whether a Default has occurred and, if a
Default has occurred, specifying the details thereof and any action taken or
proposed to be taken with respect thereto, (ii) setting forth reasonably
detailed calculations demonstrating compliance with Sections 5.09, 6.06, 6.09,
6.10, and 6.11 and (iii) stating whether any change in GAAP or in the
application thereof which has affected or will affect the Borrower's financial
statements has occurred since the date of the most recent audited financial
statements of Borrower delivered to the Administrative Agent hereunder and
specifying the effect of such change on the financial statements accompanying
such certificate;

CREDIT AGREEMENT, Page 37

<PAGE>

                  (d)      As soon as available, but in any event within 15 days
before the beginning of each fiscal year of the Borrower, a copy of the plan and
forecast (including a projected consolidated balance sheet, income statement and
funds flow statement) of the Borrower for the forthcoming fiscal year;

                  (e)      concurrently with any delivery of financial
statements under clause (a) or (b) above, copies of all registration statements,
all annual, quarterly or other regular reports and all proxy statements filed by
the Borrower or any Subsidiary with the Securities and Exchange Commission, or
any Governmental Authority succeeding to any or all of the functions of said
Commission, or distributed by the Borrower to its shareholders generally, which
have been filed or distributed since the date of the last delivery under this
clause (e) or, with respect to the first such delivery under this clause (e),
since the Effective Date;

                  (f)      promptly upon receipt thereof, a copy of any
management letter submitted to the Borrower or any Subsidiary by independent
certified public accountants with respect to the financial statements required
to be delivered under clause (a) above; and

                  (g)      promptly following any request therefor, such other
information regarding the operations, business affairs and financial condition
of the Borrower or any Subsidiary, or compliance with the terms of this
Agreement, as the Administrative Agent or any Lender may reasonably request.

         Section 5.02. Notices of Material Events. The Borrower will furnish to
the Administrative Agent and each Lender prompt written notice of the following:

                  (a)      the occurrence of any Default;

                  (b)      the filing or commencement of any action, suit or
proceeding by or before any arbitrator or Governmental Authority against or
affecting the Borrower or any Subsidiary that is reasonably expected to be
determined adversely and, if adversely determined, could reasonably be expected
to result in a Material Adverse Effect;

                  (c)      the occurrence of any ERISA Event that, alone or
together with any other ERISA Events that have occurred, could reasonably be
expected to result in a Material Adverse Effect; and

                  (d)      any other development that results in, or could
reasonably be expected to result in, a Material Adverse Effect.

Each notice delivered under this Section shall be accompanied by a statement of
a Financial Officer or other executive officer of the Borrower setting forth the
details of the event or development requiring such notice and any action taken
or proposed to be taken with respect thereto.

         Section 5.03. Existence; Conduct of Business. The Borrower will, and
will cause each of the Subsidiaries to, do or cause to be done all things
necessary to preserve, renew and keep in full force and effect its legal
existence; provided that the foregoing shall not prohibit any merger,
consolidation, liquidation or dissolution permitted under Section 6.03. The
Borrower will, and will cause each of the Subsidiaries to, do or cause to be
done all things necessary to preserve, renew and keep in full force and effect
all the rights, licenses, permits, privileges and franchises used in the conduct
of its business, except for such rights, licenses, permits, privileges and
franchises the failure to preserve, renew or keep effective could not reasonably
be expected to result in a Material Adverse Effect.

         Section 5.04. Payment of Obligations. The Borrower will, and will cause
each of the Subsidiaries to, pay its obligations, including Tax liabilities,
that, if not paid, could result in a Material

CREDIT AGREEMENT, Page 38

<PAGE>

Adverse Effect before the same shall become delinquent or in default, except
where (a) the validity or amount thereof is being contested in good faith by
appropriate proceedings, (b) the Borrower or such Subsidiary has set aside on
its books adequate reserves with respect thereto in accordance with GAAP and (c)
the failure to make payment pending such contest could not reasonably be
expected to result in a Material Adverse Effect.

         Section 5.05. Maintenance of Properties; Insurance. The Borrower will,
and will cause each of the Subsidiaries to, (a) keep and maintain all its
property in good working order and condition, ordinary wear and tear excepted,
except where the failure to do so could not reasonably be expected to result in
a Material Adverse Effect and (b) maintain, with financially sound and reputable
insurance companies, insurance in such amounts and against such risks as are
customarily maintained by companies engaged in the same or similar businesses
operating in the same or similar locations.

         Section 5.06. Books and Records; Inspection Rights. The Borrower will,
and will cause each of the Subsidiaries to, keep proper books of record and
account in which full, true and correct entries are made of all dealings and
transactions in relation to its business and activities to the extent necessary
to permit financial statements to be prepared in conformity with GAAP and
otherwise in all material respects with all requirements of law. The Borrower
will, and will cause each of the Subsidiaries to, permit any representatives
designated by the Administrative Agent or any Lender, upon reasonable prior
notice, to visit and inspect its properties, to examine and make extracts from
its books and records, and to discuss its affairs, finances and condition with
its officers and independent accountants, all at such reasonable times and as
often as reasonably requested.

         Section 5.07. Compliance with Laws and Agreements. The Borrower will,
and will cause each of the Subsidiaries to, comply with all laws, rules,
regulations and orders of any Governmental Authority applicable to it or its
property, except where the failure to do so, individually or in the aggregate,
could not reasonably be expected to result in a Material Adverse Effect. The
Borrower will, and will cause each Subsidiary to, comply with all agreements,
contracts, and instruments binding on it or affecting its properties or
business, except where the failure to do so could not reasonably be expected to
result in a Material Adverse Effect.

         Section 5.08. Use of Proceeds. The proceeds of the Loans will be used:
(a) to pay the Special Dividend and (b) for general corporate purposes of the
Borrower and the Subsidiaries, including to refinance debt and make
acquisitions. No part of the proceeds of any Loan will be used, whether directly
or indirectly, for any purpose that entails a violation of any of the
Regulations of the Board, including Regulations G, U and X. Letters of Credit
will be issued to support transactions entered into by the Borrower and the
Subsidiaries in their course of business.

         Section 5.09. Joinder of Subsidiaries to Subsidiary Guaranty. Within 60
days after the end of each fiscal quarter, the Borrower shall make the
calculations to determine whether: (i) any Subsidiary who is not a party to the
Subsidiary Guaranty is a "Material Subsidiary" as of such fiscal quarter end;
and (ii) if the Subsidiaries who are party to the Subsidiary Guaranty met the
Aggregation Test as of such fiscal quarter end. The "Aggregation Test" shall be
deemed to be met as of a fiscal quarter end if all the following conditions are
satisfied as of such fiscal quarter end: (i) the combined total assets of the
Subsidiaries who are party to the Subsidiary Guaranty as of such fiscal quarter
end are equal to or greater than 85% of the Borrower's consolidated total assets
as of such fiscal quarter end; (ii) the combined sales of the Subsidiaries who
are party to the Subsidiary Guaranty for the 12 completed months ending as of
such fiscal quarter end are equal to or greater than 85% of the Borrower's
consolidated sales for such period; and (iii) the total combined Consolidated
EBITDA of the Subsidiaries who are party to the Subsidiary Guaranty for the 12
completed months ending as of such fiscal quarter end is equal to or greater
than 85% of the Borrower's Consolidated EBITDA for such period. If any
Subsidiary who is not a

CREDIT AGREEMENT, Page 39

<PAGE>

party to the Subsidiary Guaranty is a Material Subsidiary as of such fiscal
quarter end, then within 60 days after the end of such fiscal quarter the
Borrower shall cause each such Subsidiary (any such Material Subsidiary, herein
a "New Material Subsidiary") to execute and deliver to the Administrative Agent
a Subsidiary Joinder Agreement in the form attached to the Subsidiary Guaranty
as Exhibit "A" joining it as a guarantor under the Subsidiary Guaranty and shall
execute and/or deliver such other documentation as the Administrative Agent may
reasonably request to cause such New Material Subsidiary to evidence its
authority to enter into or otherwise implement the guaranty of the repayment of
the obligations contemplated by the Subsidiary Guaranty and this Agreement. If
as of the end of any fiscal quarter, the Aggregation Test is not satisfied, then
within 60 days after the end of such fiscal quarter the Borrower shall cause
such number of Subsidiaries to join into the Subsidiary Guaranty (as if they
were each a New Material Subsidiary as provided in the foregoing sentence) so
that after giving effect thereto, the Aggregation Test is satisfied.

         Section 5.10. Further Assurances. The Borrower will execute, and will
cause each Guarantor to execute, any and all further documents, agreements and
instruments, and take all such further actions, which may be required under any
applicable law, or which either the Administrative Agent or the Required Lenders
may reasonably request, to effectuate the Transactions all at the expense of the
Borrower.

         Section 5.11. Receivables Securitization. The Borrower shall deliver to
the Administrative Agent copies of any agreements or other documents relating to
any Receivables Securitization Financing entered into by the Borrower or any
Subsidiary promptly following the execution thereof.

                                   ARTICLE VI.

                               Negative Covenants

         Until the Commitments have expired or terminated and the principal of
and interest on each Loan and all fees payable hereunder have been paid in full
and all Letters of Credit have expired or terminated and all LC Disbursements
shall have been reimbursed, the Borrower covenants and agrees with the Lenders
that:

         Section 6.01. Indebtedness. The Borrower will not, and will not permit
any Subsidiary to, create, incur, assume or permit to exist any Indebtedness,
except:

                  (a)      Indebtedness created under the Loan Documents;

                  (b)      Indebtedness existing on the Effective Date and set
forth in Schedule 3.13 and extensions, renewals and replacements of any such
Indebtedness that do not increase the outstanding principal amount thereof;

                  (c)      Indebtedness of any Subsidiary to Borrower, of
Borrower to any Subsidiary or of any Subsidiary to any other Subsidiary;
provided that: (i) such Indebtedness must be incurred in the ordinary course of
business or incurred to finance general corporate needs; and (ii) the sum of the
aggregate outstanding amount of all of the obligations of Non-Guarantor
Subsidiaries guarantied by the Borrower or any Guarantor pursuant to clause (f)
below plus the aggregate outstanding principal amount of all of the loans and
advances made to Non-Guarantor Subsidiaries by Borrower or any Guarantor plus
the aggregate amount of all of the investments made after the Effective Date in
Non-Guarantor Subsidiaries by the Borrower or any Guarantor excluding all
Receivable Financing Amounts (such sum the "Non-Guarantor Amount") shall not at
any time exceed an aggregate amount equal to $10,000,000;

CREDIT AGREEMENT, Page 40
<PAGE>

                  (d)      Indebtedness of the Borrower or any Subsidiary
incurred to finance the acquisition, construction or improvement of any fixed or
capital assets, including Capital Lease Obligations and any Indebtedness assumed
in connection with the acquisition of any such assets or secured by a Lien on
any such assets prior to the acquisition thereof, and extensions, renewals and
replacements of any such Indebtedness that do not increase the outstanding
principal amount thereof;

                  (e)      Indebtedness of any Person that becomes a Subsidiary
after the date hereof; provided that such Indebtedness exists at the time such
Person becomes a Subsidiary and is not created in contemplation of or in
connection with such Person becoming a Subsidiary;

                  (f)      Guaranties by the Borrower of Indebtedness or other
obligations of any Subsidiary and by any Subsidiary of Indebtedness or other
obligations of the Borrower or any other Subsidiary; provided that the
Non-Guarantor Amount shall not exceed $10,000,000;

                  (g)      Indebtedness outstanding under Receivable
Securitization Financings provided that the aggregate purchase commitment under
all of the Borrower's and the Subsidiaries' Receivable Securitization Financings
shall not exceed $75,000,000;

                  (h)      Indebtedness arising in connection with Swap
Agreements permitted by Section 6.05;

                  (i)      Indebtedness for borrowed money owed by Subsidiaries,
provided that: (i) the aggregate principal amount of all the Indebtedness for
borrowed money owed by the Subsidiaries (including that permitted under other
clauses of this Section 6.01, but excluding the Indebtedness permitted under
clauses (a), (c), (g), (l)(i) and (l)(ii) of this Section 6.01) does not exceed
at any time an amount equal to 10% of the Consolidated Tangible Net Worth of the
Borrower and (ii) the Non-Guarantor Amount shall not exceed $10,000,000;

                  (j)      Indebtedness incurred in the ordinary course of
business with respect to surety and appeal bonds, performance and
return-of-money bonds, and other similar obligations;

                  (k)      Indebtedness constituting obligations to reimburse
worker's compensation insurance companies for claims paid by such companies on
Borrower's or a Subsidiaries' behalf in accordance with the policies issued to
Borrower and the Subsidiaries; and

                  (l)      The following Indebtedness, in addition to the other
Indebtedness permitted by this Section, as long as on the date of the incurrence
of any of the Indebtedness described below in this clause: (i) no Default exists
or would result therefrom; (ii) with respect to clauses (iii) and (iv) below
only, the limitations on Subsidiary Indebtedness under clause (i) of this
Section 6.01 are not exceeded; and (iii) the Borrower shall have provided to the
Administrative Agent and each Lender prior to or on the date of the incurrence
thereof, a certificate of a Financial Officer: (A) certifying that no Default
exists or could reasonably be expected to occur as a result of the proposed
Indebtedness, and (B) demonstrating that as of the date of any such incurrence,
the Borrower is and, on a pro forma basis after giving effect to such
Indebtedness, will be, in compliance with the financial covenants set forth in
Sections 6.09, 6.10 and 6.11 of this Agreement:

                           (i)      Guaranties by the Borrower and the
Guarantors of the Indebtedness of Illinois Cement Company and Texas-Lehigh
Cement Company, L.P.;

                           (ii)     Indebtedness of a Subsidiary who is a
general partner of a Joint Venture arising for Indebtedness incurred by the
Joint Venture as a result of the fact that the Subsidiary is the general partner
of the Joint Venture;

CREDIT AGREEMENT, Page 41

<PAGE>

                           (iii)    Indebtedness for borrowed money incurred by
the Borrower and the guaranty thereof by the Guarantors; and

                           (iv)     Indebtedness of the type described in clause
(k) of the definition of the term Indebtedness of Borrower or any Subsidiary.

         Section 6.02. Liens. The Borrower will not, and will not permit any
Subsidiary to, create, incur, assume or permit to exist any Lien on any property
or asset now owned or hereafter acquired by it, except:

                  (a)      Permitted Encumbrances;

                  (b)      any Lien on any property or asset of the Borrower or
any Subsidiary existing on the Effective Date and set forth in Schedule 3.05;
provided that (i) such Lien shall not apply to any other property or asset of
the Borrower or any Subsidiary and (ii) such Lien shall secure only those
obligations which it secures on the date hereof and extensions, renewals and
replacements thereof that do not increase the outstanding principal amount
thereof;

                  (c)      any Lien existing on any property or asset prior to
the acquisition thereof by the Borrower or any Subsidiary or existing on any
property or asset of any Person that becomes a Subsidiary after the date hereof
prior to the time such Person becomes a Subsidiary; provided that (i) such Lien
is not created in contemplation of or in connection with such acquisition or
such Person becoming a Subsidiary, as the case may be, (ii) such Lien shall not
apply to any other property or assets of the Borrower or any Subsidiary and
(iii) such Lien shall secure only those obligations which it secures on the date
of such acquisition or the date such Person becomes a Subsidiary, as the case
may be and extensions, renewals and replacements thereof that do not increase
the outstanding principal amount thereof;

                  (d)      Liens on fixed or capital assets acquired,
constructed or improved by the Borrower or any Subsidiary; provided that (i)
such Liens secure Indebtedness permitted by clause (d) of Section 6.01, (ii)
such Liens and the Indebtedness secured thereby are incurred prior to or within
90 days after such acquisition or the completion of such construction or
improvement, (iii) the Indebtedness secured thereby does not exceed 100% of the
cost of acquiring, constructing or improving such fixed or capital assets and
(iv) such Liens shall not apply to any other property or assets of the Borrower
or any Subsidiary;

                  (e)      Liens arising out of pledges or deposits made in the
ordinary course of business of the Borrower and the Subsidiaries to secure the
performance of bids, tenders, insurance or other contracts (other than for the
repayment of borrowed money) or to secure statutory obligations, surety or
appeal bonds or indemnity, performance or other similar bonds so long as such
amounts secured by such Liens shall not exceed at any time an aggregate amount
equal to $10,000,000;

                  (f)      Liens granted in connection with Receivables
Securitization Financings permitted by Section 6.01(g) on the accounts
receivable sold or transferred pursuant thereto (together with all collections
and other proceeds thereof and any collateral securing the payment thereof), all
right, title and interest in and to the lockboxes and other collection accounts
in which proceeds of such accounts receivable are deposited, the rights under
the documents executed in connection with such Receivables Securitization
Financings and in the Equity Interests issued by any special purpose entity
organized to purchase the receivables thereunder; and

                  (g)      Liens, in addition to those permitted by the
foregoing clauses of this Section, provided that the aggregate market value of
the property and assets encumbered by all Liens incurred

CREDIT AGREEMENT, Page 42

<PAGE>

under the permissions of this clause (g) shall not exceed $10,000,000 and the
aggregate principal amount of the Indebtedness secured by all such Liens does
not exceed $10,000,000.

         Section 6.03. Fundamental Changes; Sale of Assets.

                  (a)      The Borrower will not, and will not permit any
Subsidiary to, merge into or consolidate with any other Person, or permit any
other Person to merge into or consolidate with it, or sell, transfer, lease or
otherwise dispose of (in one transaction or in a series of transactions) all of
its assets, or all or substantially all of the Equity Interest of any of the
Subsidiaries (in each case, whether now owned or hereafter acquired), or
liquidate or dissolve, except that, if at the time thereof and immediately after
giving effect thereto no Default shall have occurred and be continuing: (i) any
Person may merge into the Borrower in a transaction in which the Borrower is the
surviving corporation, (ii) any Person may merge into or consolidate with any
Subsidiary or any Subsidiary may merge into or consolidate with any Person, in
each case in a transaction in which the surviving entity is a Subsidiary, (iii)
Borrower or any Subsidiary may sell or transfer Equity Interests of a Subsidiary
to another Subsidiary or Borrower, (iv) any Subsidiary may sell, transfer, lease
or otherwise dispose of its assets to the Borrower or to another Subsidiary, (v)
any Subsidiary may liquidate or dissolve if the Borrower determines in good
faith that such liquidation or dissolution is in the best interests of the
Borrower and is not materially disadvantageous to the Lenders; and (vi) the
Borrower and the Subsidiaries may dispose of property and assets, including
Equity Interests of a Subsidiary, either directly or through a merger or
consolidation, in accordance with the permissions set forth in clause (c) of
this Section; provided that any merger or consolidation permitted under this
clause (a) involving a Person that is not a wholly owned Subsidiary immediately
prior to such merger or consolidation shall not be permitted unless also
permitted by Section 6.04 to the extent such Section otherwise restricts such
transaction.

                  (b)      The Borrower will not, and will not permit any of the
Subsidiaries to, engage to any material extent in any business other than
businesses of the type conducted by the Borrower and the Subsidiaries on the
date of execution of this Agreement and businesses reasonably related thereto.

                  (c)      The Borrower will not, and will not permit any of the
Subsidiaries to, sell, transfer, lease or otherwise dispose of any of its
property or assets, including any Equity Interests owned by it, except:

                           (i)      sales of inventory, used, obsolete or
surplus equipment and Permitted Investments in the ordinary course of business;

                           (ii)     as long as no Default exists or would result
therefrom, sales, transfers, leases and other dispositions to the Borrower or a
Subsidiary; provided that any such sales, transfers, leases or other
dispositions involving a Subsidiary shall be made in compliance with Section
6.07;

                           (iii)    the sale of accounts receivable on a limited
recourse basis pursuant to a Receivable Securitization Financing permitted by
Section 6.01(g); and

                           (iv)     in addition to the dispositions permitted by
(i) through (iii) immediately above, leases, sales or other dispositions of
property, either directly or through a merger or consolidation, that, together
with all other property of the Borrower and the Subsidiaries previously disposed
of under the permissions of this clause (iv) during the twelve-month period
ending with the month in which any such other disposition occurs (the
"Calculation Period"), do not constitute a Substantial Portion of the property
of the Borrower and the Subsidiaries;

provided that all sales, transfers, leases and other dispositions permitted
hereby (other than those permitted by clause (ii) above) shall be made for fair
value and, if the sale, transfer, lease or disposition in

CREDIT AGREEMENT, Page 43

<PAGE>

question together with any related series of sales, transfers, leases or other
dispositions, involves assets that have a fair value of more than $10,000,000,
then at least 75% of the consideration therefor shall be in cash. The term
"Substantial Portion" means, on any date, property with a book value that: (A)
represents more than 15% of the consolidated assets of the Borrower and the
Subsidiaries as would be shown in the consolidated financial statements of the
Borrower as of the last day of the last month before the start of the applicable
Calculation Period or (B) is responsible for more than 15% of the consolidated
sales or 15% of the Consolidated EBITDA of the Borrower as reflected in the
financial statements referred to in clause (A) above.

         Section 6.04. Investments, Loans, Advances, Guaranties and
Acquisitions. The Borrower will not, and will not permit any of the Subsidiaries
to, purchase, hold or acquire (including pursuant to any merger with any Person
that was not a wholly owned Subsidiary prior to such merger) any Equity
Interests, evidences of indebtedness or other securities (including any option,
warrant or other right to acquire any of the foregoing) of, make or permit to
exist any loans or advances to, Guaranty any obligations of, or make or permit
to exist any investment or any other ownership interest in, any other Person, or
purchase or otherwise acquire (in one transaction or a series of transactions)
any assets of any other Person constituting a business unit, except:

                  (a)      acquisitions of Equity Interests in another Person
not constituting Acquisitions so long as (i) no Default exists or would result
therefrom, (ii) the total Purchase Price paid for all such acquisitions during
the completed 12 month period immediately prior to the date of the acquisition
in question plus the Purchase Price for the acquisition in question does not
exceed $10,000,000 and (iii) the Non-Guarantor Amount does at no time exceed
$10,000,000;

                  (b)      Permitted Investments;

                  (c)      investments by the Borrower or any Subsidiary
existing on the date hereof and identified on Schedule 6.04;

                  (d)      Equity Interests in Subsidiaries owned as of the
Effective Date or in Subsidiaries formed or created by Borrower or a Subsidiary
after the Effective Date; provided that the Non-Guarantor Amount shall at no
time exceed $10,000,000;

                  (e)      loans or advances and other evidence of Indebtedness
including any Receivable Financing Amount and any promissory note evidencing
such amount made by the Borrower to any Subsidiary, by any Subsidiary to the
Borrower or by any Subsidiary to any other Subsidiary, in each case to the
extent permitted by Section 6.01(c);

                  (f)      loans and advances to directors, officers,
consultants or employees as payroll advances or for business expenses incurred
in the ordinary course of business or for other purposes so long as the
aggregate principal amount of the loans and advances made for such other
purposes does not exceed $1,000,000 at any one time outstanding;

                  (g)      Guaranties constituting Indebtedness permitted by
Section 6.01;

                  (h)      Acquisitions so long as:

                           (i)      no Default exists or would result therefrom;

                           (ii)     the target company is involved in a similar
type of business activities as the Borrower or any Subsidiary;

CREDIT AGREEMENT, Page 44

<PAGE>

                           (iii)    Borrower shall have: (A) completed customary
due diligence on the acquisition target, including due diligence as to
compliance with all laws, including without limitation Environmental Laws, and
provided the Administrative Agent, if requested by the Administrative Agent,
reasonable evidence thereof, and (B) provided the Administrative Agent and each
Lender, if requested by the Administrative Agent, with copies of the financial
statements (which to the extent available, shall be audited financial
statements) of the acquisition target for the most recent twelve (12) month
period prior to the closing of the Acquisition and the interim financial
statements of the acquisition target, each containing at a minimum a balance
sheet, statement of income, and a statement of cash flow;

                           (iv)     Such Acquisition has been: (i) in the event
a corporation or its assets is the acquisition target, either (x) approved by
the Board of Directors of the corporation which is the acquisition target, or
(y) recommended by such Board of Directors to the shareholders of such
acquisition target, (ii) in the event a partnership is the acquisition target,
approved by a majority (by percentage of voting power) of the partners of the
acquisition target, (iii) in the event an organization or entity other than a
corporation or partnership is the acquisition target, approved by a majority (by
percentage of voting power) of the governing body, if any, or by a majority (by
percentage of ownership interest) of the owners of the acquisition target or
(iv) in the event the corporation, partnership or other organization or entity
which is the acquisition target is in bankruptcy, approved by the bankruptcy
court or another court of competent jurisdiction;

                           (v)      the total Purchase Price (as defined below)
paid or to be paid for the proposed Acquisition in question does not exceed a
dollar amount equal to 30% of the Borrower's Consolidated Tangible Net Worth,
determined as of the date of each acquisition based on the most recent financial
statements then available (the term "Purchase Price" means, as of any date of
determination and with respect to a proposed Acquisition or acquisition of other
Equity Interests, the purchase price to be paid for the target, its assets or
such Equity Interests, including all cash consideration paid (whether classified
as purchase price, noncompete or consulting payments or otherwise), the value of
all other assets to be transferred by the purchaser in connection with such
acquisition to the seller (including any stock issued to the seller) all valued
in accordance with the applicable purchase agreement and the outstanding
principal amount of all Indebtedness of the target or the seller assumed or
acquired in connection with such acquisition);

                           (vi)     Borrower shall have provided to the
Administrative Agent and each Lender prior to or on the date that the proposed
Acquisition is to be consummated, among other documents relating to the
Acquisition in question reasonably requested by the Administrative Agent, a
certificate of a Financial Officer: (A) certifying that no Default exists or
could reasonably be expected to occur as a result of the proposed Acquisition,
and (B) demonstrating compliance with the criteria set forth in the next clause
and that as of the date of any such Acquisition, the Borrower is and, on a pro
forma basis after giving effect to the Acquisition and the incurrence or
assumption of any Indebtedness in connection therewith will be, in compliance
with the financial covenants set forth in Sections 6.09, 6.10 and 6.11 of this
Agreement; and

                           (vii)    After giving proforma effect to any
Indebtedness incurred or acquired in connection with the Acquisition and any
Consolidated EBITDA of the target to be acquired or whose assets are to be
acquired (to the extent that such Consolidated EBITDA can be established from
audited financial statements delivered to the Administrative Agent and the
Lenders), Borrower shall have a Leverage Ratio of no more than 2.25 to 1.00
calculated in the same manner as in Section 6.10 but on a pro forma basis as set
forth in this clause for the most recently ended fiscal quarter of Borrower
prior to the date of the proposed Acquisition; and

CREDIT AGREEMENT, Page 45

<PAGE>

                  (i)      To the extent not otherwise permitted by the
foregoing clause (h), the acquisitions of all of the Equity Interest in Illinois
Cement Company and Texas-Lehigh Cement Company, L.P. so long as:

                           (i)      no Default exists or would result therefrom;

                           (ii)     Borrower shall have provided the
Administrative Agent and each Lender copies of the financial statements (which
to the extent available, shall be audited financial statements) of the
acquisition target for the most recent twelve (12) month period prior to the
closing of the Acquisition and the interim financial statements of the
acquisition target, each containing at a minimum a balance sheet, statement of
income, and a statement of cash flow;

                           (iii)    Borrower shall have provided to the
Administrative Agent and each Lender prior to or on the date that the proposed
Acquisition is to be consummated, among other documents relating to the
Acquisition in question reasonably requested by the Administrative Agent, a
certificate of a Financial Officer of the Borrower (A) certifying that no
Default exists or could reasonably be expected to occur as a result of the
proposed Acquisition, and (B) demonstrating compliance with the criteria set
forth in the next clause and that as of the date of any such Acquisition, the
Borrower is and, on a pro forma basis after giving effect to the Acquisition and
the incurrence or assumption of any Indebtedness in connection therewith will
be, in compliance with the financial covenants set forth in Sections 6.09, 6.10
and 6.11 of this Agreement;

                           (iv)     after giving proforma effect to any
Indebtedness incurred or acquired in connection with the Acquisition and any
Consolidated EBITDA of the target to be acquired (to the extent that such
Consolidated EBITDA can be established from audited financial statements
delivered to the Administrative Agent and the Lenders and only to the extent
such Consolidated EBITDA is not already included in the Borrower's consolidated
financial statements), Borrower shall have a Leverage Ratio of no more than 2.25
to 1.00 calculated in the same manner as in Section 6.10 but on a pro forma
basis as set forth in this clause for the most recently ended fiscal quarter of
Borrower prior to the date of the proposed Acquisition.

         Section 6.05. Swap Agreements. The Borrower will not, and will not
permit any of the Subsidiaries to, enter into any Swap Agreement, except (a)
Swap Agreements entered into to hedge or mitigate risks to which the Borrower or
any Subsidiary has actual exposure (other than those in respect of Equity
Interests of the Borrower or any of the Subsidiaries), and (b) Swap Agreements
entered into in order to effectively cap, collar or exchange interest rates
(from fixed to floating rates, from one floating rate to another floating rate
or otherwise) with respect to any interest-bearing liability or investment of
the Borrower or any Subsidiary.

         Section 6.06. Restricted Payments; Prepayments of Indebtedness.

                  (a)      The Borrower will not, and will not permit any of the
Subsidiaries to, declare or make, or agree to pay or make, directly or
indirectly, any Restricted Payment, except:

                           (i)      the Borrower may declare and pay dividends
or make other distributions with respect to its capital stock payable solely in
additional shares of its capital stock or warrants, options or other rights to
acquire capital stock;

                           (ii)     Subsidiaries may declare and pay dividends
or make other distributions ratably with respect to their capital stock;

CREDIT AGREEMENT, Page 46

<PAGE>

                           (iii)    the Borrower and the Subsidiaries may make
Restricted Payments pursuant to and in accordance with (or otherwise under)
stock option plans or other benefit plans for directors, officers, consultants
or employees of the Borrower and the Subsidiaries;

                           (iv)     the Borrower may declare and pay the Special
Dividend in connection with the Spin-Off, provided, that the aggregate amount of
the dividend paid shall not exceed $115,000,000;

                           (v)      the purchase or redemption by the Borrower
of capital stock of the Borrower out of the net cash proceeds of a substantially
concurrent issue or sale of capital stock by the Borrower;

                           (vi)     Borrower may declare and make a Restricted
Payment on any date if on the date of the declaration thereof, on the date of
the payment thereof and immediately after giving effect thereto: (A) no Default
exists or would result therefrom; and (B) neither the Borrower nor any
Subsidiary has any Indebtedness (other than Indebtedness relating to letters of
credit and Indebtedness of the type described in clauses (c), (d), (f), (i), (j)
and (k) of Section 6.01) outstanding; and

                           (vii)    In any fiscal quarter of any fiscal year,
the Borrower may declare and make other Restricted Payments not otherwise
permitted by this Section so long as: (A) no Default exists or would result
therefrom as of the date of the declaration and payment thereof; and (B) the
aggregate amount of all such Restricted Payments made during a fiscal quarter
under the permissions of this clause (vii) does not exceed either:

                  (1)      the total of:

                           (x)      100% of the Borrower's Consolidated Net
                  Income for the immediately preceding fiscal year; minus

                           (y)      all Restricted Payments previously made
                  under the permissions of this clause (vii) in the current
                  fiscal year in which such proposed Restricted Payment is to be
                  paid,

         if after giving pro forma effect to any Indebtedness incurred in
         connection with the proposed Restricted Payment (including any
         Indebtedness incurred under this Agreement), Borrower shall have a
         Leverage Ratio of no more than 2.00 to 1.00 calculated in the same
         manner as in Section 6.10 but on a pro forma basis as set forth in this
         clause for the most recently ended fiscal quarter of Borrower prior to
         the date of the proposed Restricted Payment; or

                  (2)      the lesser of either:

                           (x)      the total of $25,000,000 minus all
                  Restricted Payments previously made under the permissions of
                  this clause (vii) in the current fiscal year in which such
                  proposed Restricted Payment is to be paid; or

                           (y)      the total of 50% of the Borrower's
                  Consolidated Net Income for the immediately preceding fiscal
                  year minus all Restricted Payments previously made under the
                  permissions of this clause (vii) in the current fiscal year in
                  which such proposed Restricted Payment is to be paid

         if after giving pro forma effect to any Indebtedness incurred in
         connection with the proposed Restricted Payment (including any
         Indebtedness incurred under this Agreement), Borrower shall

CREDIT AGREEMENT, Page 47

<PAGE>

         have a Leverage Ratio of more than 2.00 to 1.00 calculated in the same
         manner as in Section 6.10 but on a pro forma basis as set forth in this
         clause for the most recently ended fiscal quarter of Borrower prior to
         the date of the proposed Restricted Payment.

                  (b)      If a Default exists, the Borrower will not, nor will
it permit any Subsidiary to, make or agree to pay or make, directly or
indirectly, any payment or other distribution (whether in cash, securities or
other property) of or in respect of principal of or interest on any Indebtedness
of Borrower or any Subsidiary, or any payment or other distribution (whether in
cash, securities or other property), including any sinking fund or similar
deposit, on account of the purchase, redemption, retirement, acquisition,
cancellation or termination of any Indebtedness of Borrower or any Subsidiary,
except:

                           (i)      payment of Indebtedness created under the
Loan Documents;

                           (ii)     payment of regularly scheduled interest,
principal or other payments as and when due in respect of any Indebtedness;

                           (iii)    refinancing of Indebtedness to the extent
permitted by Section 6.01; and

                           (iv)     payment of secured Indebtedness that becomes
due as a result of the voluntary sale or transfer of the property or assets
securing such Indebtedness.

         Section 6.07. Transactions with Affiliates. The Borrower will not, and
will not permit any of the Subsidiaries to, sell, lease or otherwise transfer
any property or assets to, or purchase, lease or otherwise acquire any property
or assets from, or otherwise engage in any other transactions with, any of its
Affiliates, except (a) in the ordinary course of business at prices and on terms
and conditions not less favorable to the Borrower or such Subsidiary than could
be obtained on an arm's-length basis from unrelated third parties, (b)
transactions between or among the Borrower and the Guarantors not involving any
other Affiliate, (c) any Restricted Payment permitted by Section 6.06, (d)
Indebtedness permitted by clauses (c), (f) and (l)(i) of Section 6.01, and (e)
Acquisitions permitted by Section 6.04(i) provided that such Acquisitions are on
terms and conditions not less favorable to the Borrower and the Subsidiaries
than could be obtained on an arm's-length basis from unrelated third parties.

         Section 6.08. Restrictive Agreements. The Borrower will not, and will
not permit any of the Subsidiaries to, directly or indirectly, enter into, incur
or permit to exist any agreement or other arrangement that prohibits, restricts
or imposes any condition upon (a) the ability of the Borrower or any Subsidiary
to create, incur or permit to exist any Lien upon any of its property or assets,
or (b) the ability of any Subsidiary to pay dividends or other distributions
with respect to any shares of its capital stock or to make or repay loans or
advances to the Borrower or any other Subsidiary or to Guaranty Indebtedness of
the Borrower or any other Subsidiary; provided that (i) the foregoing shall not
apply to restrictions and conditions imposed by law or by this Agreement, (ii)
the foregoing shall not apply to restrictions and conditions existing on the
date hereof identified on Schedule 6.08 (but shall apply to any extension or
renewal of, or any amendment or modification expanding the scope of, any such
restriction or condition), (iii) the foregoing shall not apply to customary
restrictions and conditions contained in agreements relating to the sale of the
assets of, or an Equity Interest in, a Subsidiary pending such sale, provided
such restrictions and conditions apply only to the Subsidiary that is to be sold
and such sale is permitted hereunder, (iv) clause (a) of the foregoing shall not
apply to restrictions or conditions imposed by (1) any agreement relating to
secured Indebtedness permitted by this Agreement if such restrictions or
conditions apply only to the property or assets securing such Indebtedness or
(2) Liens permitted by Section 6.02 if such restrictions or conditions apply
only to the property or assets that are the subject of such Liens, (v) clause
(a) of the foregoing shall not apply to customary provisions in leases and other
contracts restricting the assignment thereof, (vi) clause (b) of the foregoing
shall not apply to customary provisions contained in agreements entered into in
connection with Receivables Securitization Financings permitted

CREDIT AGREEMENT, Page 48

<PAGE>

by Section 6.01(g) that impose restrictions on the ability of the special
purpose entity party thereto to declare, pay or set aside funds for the making
of any distribution in respect of the Equity Interests issued by such entity,
and (vii) the foregoing shall not apply to restrictions and conditions imposed
by the documentation executed in connection with a financing permitted by
clauses (iii) of Section 6.01(l) as long as such restrictions and conditions are
no more onerous to the Borrower and the Subsidiaries, and no more beneficial to
the parties entitled to the protections thereof, than the restrictions and
conditions hereunder.

         Section 6.09. Interest Coverage Ratio. The Borrower will not permit the
ratio, determined as of the end of each of its fiscal quarters beginning with
the fiscal quarter ended December 31, 2003, of (i) Consolidated EBIT for the
then most-recently ended four fiscal quarters to (ii) its Consolidated Interest
Expense for such four fiscal quarters to be less than 3.00 to 1.00.

         Section 6.10. Leverage Ratio. The Borrower will not permit the ratio,
determined as of the end of each of its fiscal quarters beginning with the
fiscal quarter ended December 31, 2003, of (i) its Consolidated Indebtedness as
of such fiscal quarter end to (ii) its Consolidated EBITDA for the then
most-recently ended four fiscal quarters to be greater than 2.50 to 1.00.

         Section 6.11. Minimum Tangible Net Worth. The Borrower will not permit
Consolidated Tangible Net Worth to be in an amount less than the sum of: (i) 85%
of the sum of $454,711,000 minus the dividend paid in connection with the
Spin-Off; plus (ii) 50% of its positive Consolidated Net Income (not less than
$0.00) for each completed fiscal quarter since June 30, 2003; plus (iii) 50% of
the net cash proceeds of any equity issuances (excluding issuances pursuant to
stock options or other stock-based benefit awards to directors, officers or
employees of the Borrower, the Subsidiaries or its affiliates and issuances
solely to finance permitted acquisitions) received by the Borrower or any of the
Subsidiaries since June 30, 2003 to the date of determination.

         Section 6.12. Sale and Lease-Back Transactions. The Borrower will not,
and will not permit any Subsidiary to, enter into any arrangement, directly or
indirectly, whereby it shall sell or transfer any property, real or personal,
used or useful in its business, whether now owned or hereafter acquired, and
thereafter rent or lease such property or other property that it intends to use
for substantially the same purpose or purposes as the property sold or
transferred, except for any such sale of any fixed or capital assets that is
made for cash consideration in an amount not less than the cost of such fixed or
capital asset and is consummated within 90 days after the Borrower or such
Subsidiary acquires or completes the construction of such fixed or capital
asset.

                                  ARTICLE VII.

                                Events of Default

         If any of the following events ("Events of Default") shall occur:

                  (a)      The Borrower shall fail to pay any principal of any
Loan when and as the same shall become due and payable, whether at the due date
thereof or at a date fixed for prepayment thereof or otherwise. The Borrower
shall fail to pay any reimbursement obligation in respect of any LC Disbursement
when and as the same shall become due and payable, and such failure shall
continue unremedied for one Business Day;

                  (b)      The Borrower shall fail to pay any interest on any
Loan or any fee or any other amount (other than an amount referred to in clause
(a) of this Article) payable under this Agreement,

CREDIT AGREEMENT, Page 49

<PAGE>

when and as the same shall become due and payable, and such failure shall
continue unremedied for a period of five Business Days;

                  (c)      any representation or warranty made or deemed made by
or on behalf of the Borrower or any Subsidiary in or in connection with this
Agreement or any amendment or modification hereof or waiver hereunder, or in any
report, certificate, financial statement or other document furnished pursuant to
or in connection with this Agreement or any amendment or modification hereof or
waiver hereunder, shall prove to have been incorrect in any material respect
when made or deemed made;

                  (d)      the Borrower shall fail to observe or perform any
covenant, condition or agreement contained in Sections 5.01(a), (b) or (c),
5.02, 5.03 (with respect to the Borrower's existence) or 5.08 or in Article VI;

                  (e)      the Borrower shall fail to observe or perform any
covenant, condition or agreement contained in this Agreement (other than those
specified in clause (a), (b) or (d) of this Article), and such failure shall
continue unremedied for a period of 15 days after written notice thereof from
the Administrative Agent to the Borrower (which notice will be given at the
request of any Lender);

                  (f)      the Borrower or any Subsidiary shall fail to make any
payment (whether of principal or interest and regardless of amount) in respect
of any Material Indebtedness, when and as the same shall become due and payable
(after expiration of any applicable grace period);

                  (g)      any event or condition occurs that results in any
Material Indebtedness becoming due prior to its scheduled maturity or that
enables or permits (with or without the giving of notice, the lapse of time or
both) the holder or holders of any Material Indebtedness or any trustee or agent
on its or their behalf to cause any Material Indebtedness to become due, or to
require the prepayment, repurchase, redemption or defeasance thereof, prior to
its scheduled maturity; provided that this clause (g) shall not apply to secured
Indebtedness that becomes due as a result of the voluntary sale or transfer of
the property or assets securing such Indebtedness;

                  (h)      an involuntary proceeding shall be commenced or an
involuntary petition shall be filed seeking (i) liquidation, reorganization or
other relief in respect of the Borrower or any Subsidiary or its debts, or of a
substantial part of its assets, under any Federal, state or foreign bankruptcy,
insolvency, receivership or similar law now or hereafter in effect or (ii) the
appointment of a receiver, trustee, custodian, sequestrator, conservator or
similar official for the Borrower or any Subsidiary or for a substantial part of
its assets, and, in any such case, such proceeding or petition shall continue
undismissed for 60 days or an order or decree approving or ordering any of the
foregoing shall be entered;

                  (i)      the Borrower or any Subsidiary shall (i) voluntarily
commence any proceeding or file any petition seeking liquidation, reorganization
or other relief under any Federal, state or foreign bankruptcy, insolvency,
receivership or similar law now or hereafter in effect, (ii) consent to the
institution of, or fail to contest in a timely and appropriate manner, any
proceeding or petition described in clause (h) of this Article, (iii) apply for
or consent to the appointment of a receiver, trustee, custodian, sequestrator,
conservator or similar official for the Borrower or any Subsidiary or for a
substantial part of its assets, (iv) file an answer admitting the material
allegations of a petition filed against it in any such proceeding, (v) make a
general assignment for the benefit of creditors or (vi) take any action for the
purpose of effecting any of the foregoing;

                  (j)      the Borrower or any Subsidiary shall become unable,
admit in writing its inability or fail generally to pay its debts as they become
due;

CREDIT AGREEMENT, Page 50

<PAGE>

                  (k)      one or more judgments for the payment of money in an
aggregate amount in excess of $2,500,000 shall be rendered against the Borrower,
any Subsidiary or any combination thereof and the same shall remain undischarged
for a period of 60 consecutive days during which execution shall not be
effectively stayed, or any action shall be legally taken by a judgment creditor
to attach or levy upon any assets of the Borrower or any Subsidiary to enforce
any such judgment;

                  (l)      an ERISA Event shall have occurred that, in the
opinion of the Required Lenders, when taken together with all other ERISA Events
that have occurred, could reasonably be expected to result in a Material Adverse
Effect;

                  (m)      a Change in Control shall occur; or

                  (n)      the Subsidiary Guaranty shall for any reason cease to
be in full force and effect and valid, binding and enforceable in accordance
with its terms after its date of execution, or the Borrower or any Material
Subsidiary shall so state in writing;

then, and in every such event (other than an event with respect to the Borrower
described in clause (h) or (i) of this Article), and at any time thereafter
during the continuance of such event, the Administrative Agent may, and at the
request of the Required Lenders shall, by notice to the Borrower, take either or
both of the following actions, at the same or different times: (i) terminate the
Commitments, and thereupon the Commitments shall terminate immediately, and (ii)
declare the Loans then outstanding to be due and payable in whole (or in part,
in which case any principal not so declared to be due and payable may thereafter
be declared to be due and payable), and thereupon the principal of the Loans so
declared to be due and payable, together with accrued interest thereon and all
fees and other obligations of the Borrower accrued hereunder, shall become due
and payable immediately, without presentment, demand, protest, notice of intent
to accelerate, notice of acceleration or other notice of any kind, all of which
are hereby waived by the Borrower; and in case of any event with respect to the
Borrower described in clause (h) or (i) of this Article, the Commitments shall
automatically terminate and the principal of the Loans then outstanding,
together with accrued interest thereon and all fees and other obligations of the
Borrower accrued hereunder, shall automatically become due and payable, without
presentment, demand, protest notice of intent to accelerate, notice of
acceleration or other notice of any kind, all of which are hereby waived by the
Borrower.

                                  ARTICLE VIII.

                            The Administrative Agent

         Each of the Lenders and each Issuing Bank hereby irrevocably appoints
the Administrative Agent as its (and for purposes of the Subsidiary Guaranty,
its Affiliates) agent and authorizes the Administrative Agent to take such
actions on its behalf and its Affiliates behalf and to exercise such powers as
are delegated to the Administrative Agent by the terms hereof and of the
Subsidiary Guaranty, together with such actions and powers as are reasonably
incidental thereto.

         The bank serving as the Administrative Agent hereunder shall have the
same rights and powers in its capacity as a Lender as any other Lender and may
exercise the same as though it were not the Administrative Agent, and such bank
and its Affiliates may accept deposits from, lend money to and generally engage
in any kind of business with the Borrower or any Subsidiary or other Affiliate
thereof as if it were not the Administrative Agent hereunder.

         The Administrative Agent shall not have any duties or obligations
except those expressly set forth herein. Without limiting the generality of the
foregoing, (a) the Administrative Agent shall not be subject

CREDIT AGREEMENT, Page 51

<PAGE>

to any fiduciary or other implied duties, regardless of whether a Default has
occurred and is continuing, (b) the Administrative Agent shall not have any duty
to take any discretionary action or exercise any discretionary powers, except
discretionary rights and powers expressly contemplated hereby that the
Administrative Agent is required to exercise in writing as directed by the
Required Lenders (or such other number or percentage of the Lenders as shall be
necessary under the circumstances as provided in Section 9.02), and (c) except
as expressly set forth herein, the Administrative Agent shall not have any duty
to disclose, and shall not be liable for the failure to disclose, any
information relating to the Borrower or any of the Subsidiaries that is
communicated to or obtained by the bank serving as Administrative Agent or any
of its Affiliates in any capacity. The Administrative Agent shall not be liable
for any action taken or not taken by it with the consent or at the request of
the Required Lenders (or such other number or percentage of the Lenders as shall
be necessary under the circumstances as provided in Section 9.02) or in the
absence of its own gross negligence or willful misconduct. The Administrative
Agent shall be deemed not to have knowledge of any Default unless and until
written notice thereof is given to the Administrative Agent by the Borrower or a
Lender, and the Administrative Agent shall not be responsible for or have any
duty to ascertain or inquire into (i) any statement, warranty or representation
made in or in connection with this Agreement, (ii) the contents of any
certificate, report or other document delivered hereunder or in connection
herewith, (iii) the performance or observance of any of the covenants,
agreements or other terms or conditions set forth herein, (iv) the validity,
enforceability, effectiveness or genuineness of this Agreement or any other
agreement, instrument or document, or (v) the satisfaction of any condition set
forth in Article IV or elsewhere herein, other than to confirm receipt of items
expressly required to be delivered to the Administrative Agent.

         The Administrative Agent shall be entitled to rely upon, and shall not
incur any liability for relying upon, any notice, request, certificate, consent,
statement, instrument, document or other writing believed by it to be genuine
and to have been signed or sent by the proper Person. The Administrative Agent
also may rely upon any statement made to it orally or by telephone and believed
by it to be made by the proper Person, and shall not incur any liability for
relying thereon. The Administrative Agent may consult with legal counsel (who
may be counsel for the Borrower), independent accountants and other experts
selected by it, and shall not be liable for any action taken or not taken by it
in accordance with the advice of any such counsel, accountants or experts.

         The Administrative Agent may perform any and all its duties and
exercise its rights and powers by or through any one or more sub-agents
appointed by the Administrative Agent. The Administrative Agent and any such
sub-agent may perform any and all its duties and exercise its rights and powers
through their respective Related Parties. The exculpatory provisions of the
preceding paragraphs shall apply to any such sub-agent and to the Related
Parties of the Administrative Agent and any such sub-agent, and shall apply to
their respective activities in connection with the syndication of the credit
facilities provided for herein as well as activities as Administrative Agent.

         Subject to the appointment and acceptance of a successor Administrative
Agent as provided in this paragraph, the Administrative Agent may resign at any
time by notifying the Lenders, the Issuing Banks and the Borrower. Upon any such
resignation, the Required Lenders shall have the right, with the approval of the
Borrower, to appoint a successor. If no successor shall have been so appointed
by the Required Lenders and shall have accepted such appointment within 30 days
after the retiring Administrative Agent gives notice of its resignation, then
the retiring Administrative Agent may, on behalf of the Lenders and the Issuing
Banks, appoint a successor Administrative Agent. Upon the acceptance of its
appointment as Administrative Agent hereunder by a successor, such successor
shall succeed to and become vested with all the rights, powers, privileges and
duties of the retiring Administrative Agent, and the retiring Administrative
Agent shall be discharged from its duties and obligations hereunder. The fees
payable by the Borrower to a successor Administrative Agent shall be the same as
those payable to its predecessor unless otherwise agreed between the Borrower
and such

CREDIT AGREEMENT, Page 52

<PAGE>

successor. After the Administrative Agent's resignation hereunder, the
provisions of this Article and Section 9.03 shall continue in effect for the
benefit of such retiring Administrative Agent, its sub-agents and their
respective Related Parties in respect of any actions taken or omitted to be
taken by any of them while it was acting as Administrative Agent.

         Each Lender acknowledges that it has, independently and without
reliance upon the Administrative Agent or any other 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. Each Lender also
acknowledges that it will, independently and without reliance upon the
Administrative Agent or any other Lender and based on such documents and
information as it shall from time to time deem appropriate, continue to make its
own decisions in taking or not taking action under or based upon this Agreement,
any related agreement or any document furnished hereunder or thereunder. By
accepting the benefits of the Subsidiary Guaranty, each Affiliate of the Lenders
who is owed any obligations guarantied pursuant to the terms thereof agrees to
be bound by the Loan Documents as if it were a Lender.

         Bank of America, N.A., Bank One, NA, and PNC Bank, N.A. have been
designated as "co-syndication agents" hereunder and Suntrust Bank has been
designated as "documentation agent" hereunder. No such Lender is an agent for
the Lenders and no such Lender shall have any obligation hereunder, in each
case, other than those existing in its capacity as a Lender. Without limiting
the foregoing, no such Lender shall have or be deemed to have any fiduciary
relationship with or duty to any Lender.

                                   ARTICLE IX.

                                  Miscellaneous

         Section 9.01. Notices. (a) Except in the case of notices and other
communications expressly permitted to be given by telephone (and subject to
paragraph (b) below), all notices and other communications provided for herein
shall be in writing and shall be delivered by hand or overnight courier service,
mailed by certified or registered mail or sent by telecopy, as follows:

                           (i)      if to the Borrower, to it at 2728 N.
Harwood, Dallas, Texas, 75201, Attention of Arthur R. Zunker, Jr., (Telecopy No.
214-981-6559); and

                           (ii)     if to the Administrative Agent, JPMorgan
Chase Bank as an Issuing Bank or the Swingline Lender, to JPMorgan Chase Bank,
2200 Ross Avenue, 3rd Floor, Dallas, Texas, 75201, Attention of David L. Howard,
(Telecopy No. 214/965-2044), with a copy to JPMorgan Chase Bank, 1111 Fannin
Street, 10th Floor, Houston, TX 77002; Attention: Rese Comley, Telephone
713/750-2736; Telecopy No. 713/750-2892;

                           (iii)    if to Bank One, NA as an Issuing Bank, to
Bank One, NA, 131 S. Dearborn, Chicago, Illinois 60603; Attention Claudia A.
Kech (Telephone No. 312/385-7041 and Telecopy No. 312/385-7096; and

                           (iv)     if to any other Lender, to it at its address
(or telecopy number) set forth in its Administrative Questionnaire.

                  (b)      Notices and other communications to the Lenders
hereunder may be delivered or furnished by electronic communications pursuant to
procedures approved by the Administrative Agent; provided that the foregoing
shall not apply to notices pursuant to Article II unless otherwise agreed by the
Administrative Agent and the applicable Lender. The Administrative Agent or the
Borrower may, in its

CREDIT AGREEMENT, Page 53

<PAGE>

discretion, agree to accept notices and other communications to it hereunder by
electronic communications pursuant to procedures approved by it; provided that
approval of such procedures may be limited to particular notices or
communications. Any party hereto may change its address or telecopy number for
notices and other communications hereunder by notice to the other parties
hereto. All notices and other communications given to any party hereto in
accordance with the provisions of this Agreement shall be deemed to have been
given on the date of receipt.

         Section 9.02. Waivers; Amendments.

                  (a)      No failure or delay by the Administrative Agent, any
Issuing Bank or any Lender in exercising any right or power hereunder shall
operate as a waiver thereof, nor shall any single or partial exercise of any
such right or power, or any abandonment or discontinuance of steps to enforce
such a right or power, preclude any other or further exercise thereof or the
exercise of any other right or power. The rights and remedies of the
Administrative Agent, the Issuing Banks and the Lenders hereunder are cumulative
and are not exclusive of any rights or remedies that they would otherwise have.
No waiver of any provision of this Agreement or consent to any departure by the
Borrower therefrom shall in any event be effective unless the same shall be
permitted by paragraph (b) of this Section, and then such waiver or consent
shall be effective only in the specific instance and for the purpose for which
given. Without limiting the generality of the foregoing, the making of a Loan or
issuance of a Letter of Credit shall not be construed as a waiver of any
Default, regardless of whether the Administrative Agent, any Lender or any
Issuing Bank may have had notice or knowledge of such Default at the time.

                  (b)      Neither this Agreement nor any provision hereof may
be waived, amended or modified except pursuant to an agreement or agreements in
writing entered into by the Borrower and the Required Lenders or by the Borrower
and the Administrative Agent with the consent of the Required Lenders; provided
that no such agreement shall (i) increase the Commitment of any Lender without
the written consent of such Lender, (ii) reduce the principal amount of any Loan
or LC Disbursement or reduce the rate of interest thereon, or reduce any fees
payable hereunder, without the written consent of each Lender affected thereby,
(iii) postpone the scheduled date of payment of the principal amount of any Loan
or LC Disbursement, or any interest thereon, or any fees payable hereunder, or
reduce the amount of, waive or excuse any such payment, or postpone the
scheduled date of expiration of any Commitment, without the written consent of
each Lender affected thereby, (iv) change Section 2.17(b) or (c) in a manner
that would alter the pro rata sharing of payments required thereby, without the
written consent of each Lender, (v) change any of the provisions of this Section
or the definition of "Required Lenders" or any other provision hereof specifying
the number or percentage of Lenders required to waive, amend or modify any
rights hereunder or make any determination or grant any consent hereunder,
without the written consent of each Lender, or (vi) release any Guarantor from
its obligations under the Subsidiary Guaranty except in connection with a
disposition of such Subsidiary otherwise permitted hereby (in which case the
Administrative Agent shall be authorized to release the applicable Guarantor
without the consent or approval of any Lender); provided further that no such
agreement shall amend, modify or otherwise affect the rights or duties of the
Administrative Agent, an Issuing Bank or the Swingline Lender hereunder without
the prior written consent of the Administrative Agent, the applicable Issuing
Bank or the Swingline Lender, as the case may be. The Loan Documents may be
amended or otherwise modified without the consent or agreement of any Affiliate
of any Lender.

         Section 9.03. Expenses; Indemnity; Damage Waiver.

                  (a)      The Borrower shall pay (i) all reasonable
out-of-pocket expenses incurred by the Administrative Agent and its Affiliates,
including the reasonable fees, charges and disbursements of counsel for the
Administrative Agent, in connection with the syndication of the credit
facilities provided for herein, the preparation, execution, delivery and
administration of this Agreement or any amendments,

CREDIT AGREEMENT, Page 54

<PAGE>

modifications or waivers of the provisions hereof (whether or not the
transactions contemplated hereby or thereby shall be consummated), (ii) all
reasonable out-of-pocket expenses incurred by each Issuing Bank in connection
with the issuance, amendment, renewal or extension of any Letter of Credit or
any demand for payment thereunder and (iii) all out-of-pocket expenses incurred
by the Administrative Agent, each Issuing Bank or any Lender, including the
fees, charges and disbursements of any counsel for the Administrative Agent, any
Issuing Bank or any Lender, in connection with the enforcement or protection of
its rights in connection with this Agreement, including its rights under this
Section, or in connection with the Loans made or Letters of Credit issued
hereunder, including all such out-of-pocket expenses incurred during any
workout, restructuring or negotiations in respect of such Loans or Letters of
Credit.

                  (b)      SUBJECT TO CLAUSE (D) BELOW, THE BORROWER SHALL
INDEMNIFY THE ADMINISTRATIVE AGENT, EACH ISSUING BANK AND EACH LENDER, AND EACH
RELATED PARTY OF ANY OF THE FOREGOING PERSONS (EACH SUCH PERSON BEING CALLED AN
"INDEMNITEE") AGAINST, AND HOLD EACH INDEMNITEE HARMLESS FROM, ANY AND ALL
LOSSES, CLAIMS, DAMAGES, LIABILITIES AND RELATED EXPENSES, INCLUDING THE FEES,
CHARGES AND DISBURSEMENTS OF ANY COUNSEL FOR ANY INDEMNITEE, INCURRED BY OR
ASSERTED AGAINST ANY INDEMNITEE ARISING OUT OF, IN CONNECTION WITH, OR AS A
RESULT OF (I) THE EXECUTION OR DELIVERY OF THIS AGREEMENT OR ANY AGREEMENT OR
INSTRUMENT CONTEMPLATED HEREBY, THE PERFORMANCE BY THE PARTIES HERETO OF THEIR
RESPECTIVE OBLIGATIONS HEREUNDER OR THE CONSUMMATION OF THE TRANSACTIONS, THE
SPIN OFF OR ANY OTHER TRANSACTIONS CONTEMPLATED HEREBY, (II) ANY LOAN OR LETTER
OF CREDIT OR THE USE OF THE PROCEEDS THEREFROM (INCLUDING ANY REFUSAL BY AN
ISSUING BANK TO HONOR A DEMAND FOR PAYMENT UNDER A LETTER OF CREDIT IF THE
DOCUMENTS PRESENTED IN CONNECTION WITH SUCH DEMAND DO NOT STRICTLY COMPLY WITH
THE TERMS OF SUCH LETTER OF CREDIT), (III) ANY ACTUAL OR ALLEGED PRESENCE OR
RELEASE OF HAZARDOUS MATERIALS ON OR FROM ANY PROPERTY OWNED OR OPERATED BY THE
BORROWER OR ANY OF THE SUBSIDIARIES, OR ANY ENVIRONMENTAL LIABILITY RELATED IN
ANY WAY TO THE BORROWER OR ANY OF THE SUBSIDIARIES, OR (IV) ANY ACTUAL OR
PROSPECTIVE CLAIM, LITIGATION, INVESTIGATION OR PROCEEDING RELATING TO ANY OF
THE FOREGOING, WHETHER BASED ON CONTRACT, TORT OR ANY OTHER THEORY AND
REGARDLESS OF WHETHER ANY INDEMNITEE IS A PARTY THERETO; PROVIDED THAT SUCH
INDEMNITY SHALL NOT, AS TO ANY INDEMNITEE, BE AVAILABLE TO THE EXTENT THAT SUCH
LOSSES, CLAIMS, DAMAGES, LIABILITIES OR RELATED EXPENSES RESULTED FROM THE GROSS
NEGLIGENCE, UNLAWFUL CONDUCT OR WILLFUL MISCONDUCT OF SUCH INDEMNITEE. IT IS THE
EXPRESSED INTENT OF THE PARTIES HERETO THAT THE INDEMNITY IN THIS CLAUSE (B)
SHALL, AS TO ANY INDEMNITEE, BE AVAILABLE TO THE EXTENT THAT SUCH LOSSES,
CLAIMS, DAMAGES, LIABILITIES OR RELATED EXPENSES ARE DETERMINED TO HAVE RESULTED
FROM THE SOLE OR CONTRIBUTORY NEGLIGENCE OF SUCH INDEMNITEE.

                  (c)      To the extent that the Borrower fails to pay any
amount required to be paid by it to the Administrative Agent, an Issuing Bank or
the Swingline Lender under paragraph (a) or (b) of this Section, each Lender
severally agrees to pay to the Administrative Agent, the applicable Issuing Bank
or the Swingline Lender, as the case may be, such Lender's Applicable Percentage
(determined as of the time that the applicable unreimbursed expense or indemnity
payment is sought) of such unpaid amount; provided that the unreimbursed expense
or indemnified loss, claim, damage, liability or related expense, as the case
may be, was incurred by or asserted against the Administrative Agent, the
Issuing Bank or the Swingline Lender in its capacity as such.

CREDIT AGREEMENT, Page 55

<PAGE>

                  (d)      To the extent permitted by applicable law, the
Borrower shall not assert, and hereby waives, any claim against any Indemnitee,
and each Indemnitee shall not assert, and hereby waives, any claim against
Borrower or any Guarantor, on any theory of liability, for special, indirect,
consequential or punitive damages (as opposed to direct or actual damages)
arising out of, in connection with, or as a result of, this Agreement or any
agreement or instrument contemplated hereby, the Transactions, the Spin Off ,
any Loan or Letter of Credit or the use of the proceeds thereof.

                  (e)      All amounts due under this Section shall be payable
promptly after written demand therefor and may be funded as a Swingline Loan or
Revolving Loan.

         Section 9.04. Successors and Assigns.

                  (a)      The provisions of this Agreement shall be binding
upon and inure to the benefit of the parties hereto and their respective
successors and assigns permitted hereby (including any Affiliate of JPMorgan
Chase Bank that issues any Letter of Credit), except that (i) the Borrower may
not assign or otherwise transfer any of its rights or obligations hereunder
without the prior written consent of each Lender (and any attempted assignment
or transfer by the Borrower without such consent shall be null and void) and
(ii) no Lender may assign or otherwise transfer its rights or obligations
hereunder except in accordance with this Section or in accordance with Section
2.18. Nothing in this Agreement, expressed or implied, shall be construed to
confer upon any Person (other than the parties hereto, their respective
successors and assigns permitted hereby (including any Affiliate of JPMorgan
Chase Bank that issues any Letter of Credit), Participants (to the extent
provided in paragraph (c) of this Section) and, to the extent expressly
contemplated hereby, the Related Parties of each of the Administrative Agent,
each Issuing Bank and the Lenders) any legal or equitable right, remedy or claim
under or by reason of this Agreement.

                  (b)      Subject to the conditions set forth in paragraph
(b)(ii) below, any Lender may assign to one or more assignees all or a portion
of its rights and obligations under this Agreement (including all or a portion
of its Commitment and the Loans at the time owing to it) with the prior written
consent (such consent not to be unreasonably withheld) of:

                                    (A)      the Borrower, provided that no
consent of the Borrower shall be required for an assignment to a Lender, an
Affiliate of a Lender, an Approved Fund or, if an Event of Default has occurred
and is continuing, any other assignee; and

                                    (B)      the Administrative Agent, provided
that no consent of the Administrative Agent shall be required for an assignment
to a Lender, an Affiliate of a Lender, or an Approved Fund.

                           (ii)     Assignments shall be subject to the
following additional conditions:

                                    (A)      except in the case of an assignment
to a Lender or an Affiliate of a Lender or an assignment of the entire remaining
amount of the assigning Lender's Commitment or Loans of any Class, the amount of
the Commitment or Loans of the assigning Lender subject to each such assignment
(determined as of the date the Assignment and Assumption with respect to such
assignment is delivered to the Administrative Agent) shall not be less than
$5,000,000 unless each of the Borrower and the Administrative Agent otherwise
consent, provided that no such consent of the Borrower shall be required if an
Event of Default has occurred and is continuing;

CREDIT AGREEMENT, Page 56

<PAGE>

                                    (B)      each partial assignment shall be
made as an assignment of a proportionate part of all the assigning Lender's
rights and obligations under this Agreement;

                                    (C)      the parties to each assignment
shall execute and deliver to the Administrative Agent an Assignment and
Assumption, together with a processing and recordation fee of $3,500; and

                                    (D)      the assignee, if it shall not be a
Lender, shall deliver to the Administrative Agent an Administrative
Questionnaire.

         For the purposes of this Section 9.04(b), the term "Approved Fund" has
the following meaning:

                  "Approved Fund" means any Person (other than a natural person)
         that is engaged in making, purchasing, holding or investing in bank
         loans and similar extensions of credit in the ordinary course of its
         business and that is administered or managed by (a) a Lender, (b) an
         Affiliate of a Lender or (c) an entity or an Affiliate of an entity
         that administers or manages a Lender.

                           (iii)    Subject to acceptance and recording thereof
pursuant to paragraph (b)(iv) of this Section, from and after the effective date
specified in each Assignment and Assumption the assignee thereunder shall be a
party hereto and, to the extent of the interest assigned by such Assignment and
Assumption, have the rights and obligations of a Lender under this Agreement,
and the assigning Lender thereunder shall, to the extent of the interest
assigned by such Assignment and Assumption, be released from its obligations
under this Agreement (and, in the case of an Assignment and Assumption covering
all of the assigning Lender's rights and obligations under this Agreement, such
Lender shall cease to be a party hereto but shall continue to be entitled to the
benefits of Sections 2.14, 2.15, 2.16 and 9.03). Any assignment or transfer by a
Lender of rights or obligations under this Agreement that does not comply with
this Section 9.04 shall be treated for purposes of this Agreement as a sale by
such Lender of a participation in such rights and obligations in accordance with
paragraph (c) of this Section.

                           (iv)     The Administrative Agent, acting for this
purpose as an agent of the Borrower, shall maintain at one of its offices a copy
of each Assignment and Assumption delivered to it and a register for the
recordation of the names and addresses of the Lenders, and the Commitment of,
and principal amount of the Loans and LC Disbursements owing to, each Lender
pursuant to the terms hereof from time to time (the "Register"). The entries in
the Register shall be conclusive, and the Borrower, the Administrative Agent,
each Issuing Bank and the Lenders may treat each Person whose name is recorded
in the Register pursuant to the terms hereof as a Lender hereunder for all
purposes of this Agreement, notwithstanding notice to the contrary. The Register
shall be available for inspection by the Borrower, each Issuing Bank and any
Lender, at any reasonable time and from time to time upon reasonable prior
notice.

                           (v)      Upon its receipt of a duly completed
Assignment and Assumption executed by an assigning Lender and an assignee, the
assignee's completed Administrative Questionnaire (unless the assignee shall
already be a Lender hereunder), the processing and recordation fee referred to
in paragraph (b) of this Section and any written consent to such assignment
required by paragraph (b) of this Section, the Administrative Agent shall accept
such Assignment and Assumption and record the information contained therein in
the Register. No assignment shall be effective for purposes of this Agreement
unless it has been recorded in the Register as provided in this paragraph.

CREDIT AGREEMENT, Page 57

<PAGE>

                  (c)      Any Lender may, without the consent of the Borrower,
the Administrative Agent, any Issuing Bank or the Swingline Lender, sell
participations to one or more banks or other entities (a "Participant") in all
or a portion of such Lender's rights and obligations under this Agreement
(including all or a portion of its Commitment and the Loans owing to it);
provided that (A) such Lender's obligations under this Agreement shall remain
unchanged, (B) such Lender shall remain solely responsible to the other parties
hereto for the performance of such obligations and (C) the Borrower, the
Administrative Agent, each Issuing Bank 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. Any agreement or instrument
pursuant to which a Lender sells such a participation shall provide that such
Lender shall retain the sole right to enforce this Agreement and to approve any
amendment, modification or waiver of any provision of this Agreement; provided
that such agreement or instrument may provide that such Lender will not, without
the consent of the Participant, agree to any amendment, modification or waiver
described in the first proviso to Section 9.02(b) that affects such Participant.
Subject to paragraph (c)(ii) of this Section, the Borrower agrees that each
Participant shall be entitled to the benefits of Sections 2.14, 2.15 and 2.16 to
the same extent as if it were a Lender and had acquired its interest by
assignment pursuant to paragraph (b) of this Section. To the extent permitted by
law, each Participant also shall be entitled to the benefits of Section 9.08 as
though it were a Lender, provided such Participant agrees to be subject to
Section 2.17(c) as though it were a Lender.

                           (i)      A Participant shall not be entitled to
receive any greater payment under Section 2.14 or 2.16 than the applicable
Lender would have been entitled to receive with respect to the participation
sold to such Participant, unless the sale of the participation to such
Participant is made with the Borrower's prior written consent. A Participant
that would be a Foreign Lender if it were a Lender shall not be entitled to the
benefits of Section 2.16 unless the Borrower is notified of the participation
sold to such Participant and such Participant agrees, for the benefit of the
Borrower, to comply with Section 2.16(e) as though it were a Lender.

                  (d)      Any Lender may at any time pledge or assign a
security interest in all or any portion of its rights under this Agreement to
secure obligations of such Lender, including without limitation any pledge or
assignment to secure obligations to a Federal Reserve Bank, and this Section
shall not apply to any such pledge or assignment of a security interest;
provided that no such pledge or assignment of a security interest shall release
a Lender from any of its obligations hereunder or substitute any such pledgee or
assignee for such Lender as a party hereto.

         Section 9.05. Survival. All covenants, agreements, representations and
warranties made by the Borrower herein and in the certificates or other
instruments delivered in connection with or pursuant to this Agreement shall be
considered to have been relied upon by the other parties hereto and shall
survive the execution and delivery of this Agreement and the making of any Loans
and issuance of any Letters of Credit, regardless of any investigation made by
any such other party or on its behalf and notwithstanding that the
Administrative Agent, any Issuing Bank or any Lender may have had notice or
knowledge of any Default or incorrect representation or warranty at the time any
credit is extended hereunder, and shall continue in full force and effect as
long as the principal of or any accrued interest on any Loan or any fee or any
other amount payable under this Agreement is outstanding and unpaid or any
Letter of Credit is outstanding and so long as the Commitments have not expired
or terminated. The provisions of Sections 2.14, 2.15, 2.16 and 9.03 and Article
VIII shall survive and remain in full force and effect regardless of the
consummation of the transactions contemplated hereby, the repayment of the
Loans, the expiration or termination of the Letters of Credit and the
Commitments or the termination of this Agreement or any provision hereof.

CREDIT AGREEMENT, Page 58

<PAGE>

         Section 9.06. Counterparts; Integration; Effectiveness. This Agreement
may be executed in counterparts (and by different parties hereto on different
counterparts), each of which shall constitute an original, but all of which when
taken together shall constitute a single contract. THIS AGREEMENT, THE OTHER
DOCUMENTS EXECUTED IN CONNECTION HEREWITH AND ANY SEPARATE LETTER AGREEMENTS
WITH RESPECT TO FEES PAYABLE TO THE ADMINISTRATIVE AGENT EMBODY THE FINAL,
ENTIRE AGREEMENT AMONG THE PARTIES RELATING TO THE SUBJECT MATTER HEREOF AND
SUPERSEDE ANY AND ALL PREVIOUS COMMITMENTS, AGREEMENTS, REPRESENTATIONS AND
UNDERSTANDINGS, WHETHER ORAL OR WRITTEN, RELATING TO THE SUBJECT MATTER HEREOF
AND MAY NOT BE CONTRADICTED OR VARIED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR
SUBSEQUENT ORAL AGREEMENTS OR DISCUSSIONS OF THE PARTIES HERETO THERE ARE NO
UNWRITTEN ORAL AGREEMENTS AMONG THE PARTIES HERETO. Except as provided in
Section 4.01, this Agreement shall become effective when it shall have been
executed by the Administrative Agent and when the Administrative Agent shall
have received counterparts hereof which, when taken together, bear the
signatures of each of the other parties hereto, and thereafter shall be binding
upon and inure to the benefit of the parties hereto and their respective
successors and assigns. Delivery of an executed counterpart of a signature page
of this Agreement by telecopy shall be effective as delivery of a manually
executed counterpart of this Agreement.

         Section 9.07. Severability. Any provision of this Agreement held to be
invalid, illegal or unenforceable in any jurisdiction shall, as to such
jurisdiction, be ineffective to the extent of such invalidity, illegality or
unenforceability without affecting the validity, legality and enforceability of
the remaining provisions hereof; and the invalidity of a particular provision in
a particular jurisdiction shall not invalidate such provision in any other
jurisdiction.

         Section 9.08. Right of Setoff. If an Event of Default shall have
occurred and be continuing, 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 obligations at any time
owing by such Lender or Affiliate to or for the credit or the account of the
Borrower against any of and all the obligations of the Borrower now or hereafter
existing under this Agreement held by such Lender, irrespective of whether or
not such Lender shall have made any demand under this Agreement and although
such obligations may be unmatured. The rights of each Lender under this Section
are in addition to other rights and remedies (including other rights of setoff)
which such Lender may have.

         Section 9.09. Governing Law; Jurisdiction; Consent to Service of
Process.

                  (a)      This Agreement shall be construed in accordance with
and governed by the law of the State of Texas.

                  (b)      THE BORROWER HEREBY IRREVOCABLY AND UNCONDITIONALLY
SUBMITS, FOR ITSELF AND ITS PROPERTY, TO THE NONEXCLUSIVE JURISDICTION OF THE
STATE COURTS OF THE STATE OF TEXAS SITTING IN DALLAS COUNTY AND OF THE UNITED
STATES DISTRICT COURT OF THE NORTHERN DISTRICT OF TEXAS, AND ANY APPELLATE COURT
FROM ANY THEREOF, IN ANY ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS
AGREEMENT, 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 SUCH
TEXAS STATE OR, TO THE EXTENT PERMITTED BY LAW, IN SUCH FEDERAL COURT. EACH OF
THE PARTIES HERETO AGREES THAT A FINAL JUDGMENT IN ANY SUCH ACTION OR PROCEEDING
SHALL BE

CREDIT AGREEMENT, Page 59

<PAGE>

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 THE ADMINISTRATIVE AGENT, ANY ISSUING BANK OR ANY LENDER MAY
OTHERWISE HAVE TO BRING ANY ACTION OR PROCEEDING RELATING TO THIS AGREEMENT
AGAINST THE BORROWER OR ITS PROPERTIES IN THE COURTS OF ANY JURISDICTION.

                  (c)      The Borrower hereby irrevocably and unconditionally
waives, to the fullest extent it may legally and effectively do so, any
objection which 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 in any court
referred to in paragraph (b) of this Section. 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.

                  (d)      Each party to this Agreement irrevocably consents to
service of process in the manner provided for notices in Section 9.01. Nothing
in this Agreement will affect the right of any party to this Agreement to serve
process in any other manner permitted by law.

         Section 9.10. WAIVER OF JURY TRIAL. EACH PARTY HERETO HEREBY WAIVES, TO
THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL
BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF OR
RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY (WHETHER
BASED ON CONTRACT, TORT OR ANY OTHER THEORY). EACH PARTY HERETO (A) CERTIFIES
THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED,
EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF
LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER AND (B) ACKNOWLEDGES THAT IT
AND THE OTHER PARTIES HERETO HAVE BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY,
AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION.

         Section 9.11. Headings. Article and Section headings and the Table of
Contents used herein are for convenience of reference only, are not part of this
Agreement and shall not affect the construction of, or be taken into
consideration in interpreting, this Agreement.

         Section 9.12. Confidentiality. Each of the Administrative Agent, the
Issuing Banks and the Lenders agrees to maintain the confidentiality of the
Information (as defined below), except that Information may be disclosed (a) to
its and its Affiliates' directors, officers, employees and agents, including
accountants, legal counsel and other advisors (it being understood that the
Persons to whom such disclosure is made will be informed of the confidential
nature of such Information and instructed to keep such Information
confidential), (b) to the extent requested by any regulatory authority, (c) to
the extent required by applicable laws or regulations or by any subpoena or
similar legal process, (d) to any other party to this Agreement, (e) in
connection with the exercise of any remedies hereunder or any suit, action or
proceeding relating to this Agreement or the enforcement of rights hereunder,
(f) subject to an agreement containing provisions substantially the same as
those of this Section, to (i) any assignee of or Participant in, or any
prospective assignee of or Participant in, any of its rights or obligations
under this Agreement and (ii) any actual or prospective counterparty (or its
advisors) to any swap or derivative transaction relating to the Borrower and its
obligations, (g) with the consent of the Borrower or (h) to the extent such
Information becomes publicly available other than as a result of a breach of
this Section or becomes available to the Administrative Agent, an Issuing Bank
or any Lender on a non-confidential basis from a source other than the Borrower
or any of its Affiliates; provided such source is not known by the receiving
party to be bound by a confidentiality agreement with or other contractual,
legal or fiduciary

CREDIT AGREEMENT, Page 60

<PAGE>

obligation of confidentiality to Borrower, or (i) to any direct or indirect
contractual counterparty with a Lender or its Affiliates in a Swap Agreement or
such counterparty's professional advisor (so long as such contractual
counterparty or professional advisor to such contractual counterparty agrees to
be bound by the provisions of this Section 9.12); provided that, unless
specifically prohibited by applicable law or court order, each Lender shall
notify the Borrower of any request by any regulatory authority or representative
thereof or pursuant to legal process (other than any such request in connection
with any examination of the financial condition of such Lender by such
regulatory authority) for disclosure of any such nonpublic information prior to
disclosure of such information. For the purposes of this Section, "Information"
means all information received from the Borrower or any of its Affiliates
relating to the Borrower or any of the Subsidiaries or their respective
businesses; provided that, in the case of information received from the Borrower
after the date hereof, such information is clearly identified at the time of
delivery as confidential. Any Person required to maintain the confidentiality of
Information as provided in this Section shall be considered to have complied
with its obligation to do so if such Person has exercised the same degree of
care to maintain the confidentiality of such Information as such Person would
accord to its own confidential information. Notwithstanding anything in the
foregoing, the parties hereto may disclose to any Person, without limitation of
any kind, the "tax treatment" and "tax structure" (in each case, within the
meaning of Treasury Regulation Section 1.6011-4) of the Transactions and all
materials of any kind (including opinions or other tax analyses) that are
provided to the Borrower relating to such tax treatment and tax structure,
except that, with respect to any document or similar item that in either case
contains information concerning the tax treatment or tax structure of the
transaction as well as other information, this proviso shall only apply to such
portions of the document or similar item that relate to the tax treatment or tax
structure of the Transactions.

         Section 9.13. Maximum Interest Rate.

                  (a)      No interest rate specified in any Loan Document shall
at any time exceed the Maximum Rate. If at any time the interest rate (the
"Contract Rate") for any obligation under the Loan Documents shall exceed the
Maximum Rate, thereby causing the interest accruing on such obligation to be
limited to the Maximum Rate, then any subsequent reduction in the Contract Rate
for such obligation shall not reduce the rate of interest on such obligation
below the Maximum Rate until the aggregate amount of interest accrued on such
obligation equals the aggregate amount of interest which would have accrued on
such obligation if the Contract Rate for such obligation had at all times been
in effect. As used herein, the term "Maximum Rate" means, at any time with
respect to any Lender, the maximum rate of nonusurious interest under applicable
law that such Lender may charge Borrower. The Maximum Rate shall be calculated
in a manner that takes into account any and all fees, payments, and other
charges contracted for, charged, or received in connection with the Loan
Documents that constitute interest under applicable law. Each change in any
interest rate provided for herein based upon the Maximum Rate resulting from a
change in the Maximum Rate shall take effect without notice to Borrower at the
time of such change in the Maximum Rate. For purposes of determining the Maximum
Rate under Texas law, the applicable rate ceiling shall be the weekly rate
ceiling described in, and computed in accordance with, Article 5069-1.04,
Vernon's Texas Civil Statutes.

                  (b)      No provision of any Loan Document shall require the
payment or the collection of interest in excess of the maximum amount permitted
by applicable law. If any excess of interest in such respect is hereby provided
for, or shall be adjudicated to be so provided, in any Loan Document or
otherwise in connection with this loan transaction, the provisions of this
Section shall govern and prevail and neither Borrower nor the sureties,
guarantors, successors, or assigns of Borrower shall be obligated to pay the
excess amount of such interest or any other excess sum paid for the use,
forbearance, or detention of sums loaned pursuant hereto. In the event any
Lender ever receives, collects, or applies as interest any such sum, such amount
which would be in excess of the maximum amount permitted by applicable law shall
be applied as a payment and reduction of the principal of the obligations
outstanding hereunder, and,

CREDIT AGREEMENT, Page 61

<PAGE>

if the principal of the obligations outstanding hereunder has been paid in full,
any remaining excess shall forthwith be paid to the Borrower. In determining
whether or not the interest paid or payable exceeds the Maximum Rate, Borrower
and each Lender shall, to the extent permitted by applicable law, (a)
characterize any non-principal payment as an expense, fee, or premium rather
than as interest, (b) exclude voluntary prepayments and the effects thereof, and
(c) amortize, prorate, allocate, and spread in equal or unequal parts the total
amount of interest throughout the entire contemplated term of the obligations
outstanding hereunder so that interest for the entire term does not exceed the
Maximum Rate.

                  (c)      The provisions of Chapter 346 of the Finance Code of
Texas are specifically declared by the parties hereto not to be applicable to
this Agreement or to the transactions contemplated hereby.

         Section 9.14. No Fiduciary Relationship. The relationship between the
Borrower and the Guarantors on the one hand and the Administrative Agent and
each Lender on the other is solely that of debtor and creditor, and neither the
Administrative Agent nor any Lender has any fiduciary or other special
relationship with either the Borrower or any Guarantor, and no term or condition
of any of the Loan Documents shall be construed so as to deem the relationship
between the Borrower and the Guarantors on the one hand and the Administrative
Agent and each Lender on the other to be other than that of debtor and creditor.

         Section 9.15. Construction. The Borrower, the Guarantors (by its
execution of the Loan Documents to which it is a party), the Administrative
Agent and each Lender acknowledges that each of them has had the benefit of
legal counsel of its own choice and has been afforded an opportunity to review
the Loan Documents with its legal counsel and that the Loan Documents shall be
construed as if jointly drafted by the parties thereto.

         Section 9.16. Independence of Covenants. All covenants under the Loan
Documents shall be given independent effect so that if a particular action or
condition is not permitted by any of such covenants, the fact that it would be
permitted by an exception to, or be otherwise within the limitations of, another
covenant shall not avoid the occurrence of a Default if such action is taken or
such condition exists.

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

                             CENTEX CONSTRUCTION PRODUCTS, INC.

                             By: /s/ ARTHUR R. ZUNKER, JR.
                                 ----------------------------------------------
                                 Arthur R. Zunker, Jr., Chief Financial Officer

                             JPMORGAN CHASE BANK,
                             individually and as Administrative Agent,

                             By: /s/ DAVID L. HOWARD
                                 ----------------------------------------------
                                 David L. Howard, Vice President

CREDIT AGREEMENT, Page 62

<PAGE>

                             PNC BANK, N.A.

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

                             BANK OF TEXAS, N.A.

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

                             SUNTRUST BANK

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

                             BRANCH BANKING AND TRUST COMPANY

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

                             U.S. BANK NATIONAL ASSOCIATION

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

                             WELLS FARGO BANK, N.A.

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

CREDIT AGREEMENT, Page 63

<PAGE>

                             BNP PARIBAS

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

                             BANK OF AMERICA, N.A.

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

                             THE NORTHERN TRUST COMPANY

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

                             COMERICA BANK

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

                             UNION BANK OF CALIFORNIA, N.A.

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

CREDIT AGREEMENT, Page 64

<PAGE>

                             CREDIT LYONNAIS NEW YORK BRANCH

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

                             BANK ONE, NA

                             By: /s/ AUTHORIZED SIGNATORY
                                 -----------------------------------------------
                                 Name:
                                        ----------------------------------------
                                 Title:
                                        ----------------------------------------

CREDIT AGREEMENT, Page 65

<PAGE>

                         LIST OF SCHEDULES AND EXHIBITS

Schedules:

Schedule 1.01(a)      -    Existing Letters of Credit
Schedule 2.01         -    Commitments
Schedule 3.05         -    Existing Liens
Schedule 3.06         -    Disclosed Matters
Schedule 3.12         -    Subsidiaries
Schedule 3.13         -    Existing Indebtedness
Schedule 6.04         -    Existing Investments
Schedule 6.08         -    Existing Restrictions

Exhibits:

Exhibit A             -    Form of Assignment and Assumption
Exhibit B             -    Form of Opinion of Borrower's Counsel
Exhibit C             -    Form of Guaranty Agreement
Exhibit C             -    Form of Notice of Borrowing

LIST OF SCHEDULES AND EXHIBITS, Solo Page

<PAGE>

                                    EXHIBIT A
                                       TO
                        CENTEX CONSTRUCTION PRODUCTS, INC
                                CREDIT AGREEMENT

                        Form of Assignment and Assumption

EXHIBIT A, FORM OF ASSIGNMENT AND ASSUMPTION, Cover Page

<PAGE>

                            ASSIGNMENT AND ASSUMPTION

         This Assignment and Assumption (the "Assignment and Assumption") is
dated as of the Effective Date set forth below and is entered into by and
between [Insert name of Assignor] (the "Assignor") and [Insert name of Assignee]
(the "Assignee"). Capitalized terms used but not defined herein shall have the
meanings given to them in the Credit Agreement identified below (as amended, the
"Credit Agreement"), receipt of a copy of which is hereby acknowledged by the
Assignee. The Standard Terms and Conditions set forth in Annex 1 attached hereto
are hereby agreed to and incorporated herein by reference and made a part of
this Assignment and Assumption as if set forth herein in full.

         For an agreed consideration, the Assignor hereby irrevocably sells and
assigns to the Assignee, and the Assignee hereby irrevocably purchases and
assumes from the Assignor, subject to and in accordance with the Standard Terms
and Conditions and the Credit Agreement, as of the Effective Date inserted by
the Administrative Agent as contemplated below (i) all of the Assignor's rights
and obligations in its capacity as a Lender under the Credit Agreement and any
other documents or instruments delivered pursuant thereto to the extent related
to the amount and percentage interest identified below of all of such
outstanding rights and obligations of the Assignor under the respective
facilities identified below (including any letters of credit, guaranties, and
swingline loans included in such facilities) and (ii) to the extent permitted to
be assigned under applicable law, all claims, suits, causes of action and any
other right of the Assignor (in its capacity as a Lender) against any Person,
whether known or unknown, arising under or in connection with the Credit
Agreement, any other documents or instruments delivered pursuant thereto or the
loan transactions governed thereby or in any way based on or related to any of
the foregoing, including contract claims, tort claims, malpractice claims,
statutory claims and all other claims at law or in equity related to the rights
and obligations sold and assigned pursuant to clause (i) above (the rights and
obligations sold and assigned pursuant to clauses (i) and (ii) above being
referred to herein collectively as the "Assigned Interest"). Such sale and
assignment is without recourse to the Assignor and, except as expressly provided
in this Assignment and Assumption, without representation or warranty by the
Assignor.

1. Assignor:

2. Assignee:

                           [and is an Affiliate/Approved Fund of [identify
                           Lender](1)]

3. Borrower:               Centex Construction Products, Inc.

4. Administrative Agent:   JPMorgan Chase Bank, as the administrative agent
                           under the Credit Agreement

5. Credit Agreement:       The $250,000,000 Credit Agreement dated as of
                           December 18, 2003 among Centex Construction Products,
                           Inc., the Lenders parties thereto, JPMorgan Chase
                           Bank as Administrative Agent, and the other agents
                           parties thereto.

ASSIGNMENT AND ASSUMPTION, Page 1

<PAGE>

6. Assigned Interest:

<TABLE>
<CAPTION>
                             Aggregate Amount of         Amount of
                              Commitment/Loans        Commitment/Loans     Percentage Assigned
Facility Assigned(2)           for all Lenders           Assigned          of Commitment/Loans(3)
--------------------         -------------------     -----------------     ----------------------
<S>                          <C>                     <C>                   <C>
                             $                        $                              %
                             $                        $                              %
                             $                        $                              %
</TABLE>

Effective Date: _____________ ___, 20___ [TO BE INSERTED BY ADMINISTRATIVE AGENT
AND WHICH SHALL BE THE EFFECTIVE DATE OF RECORDATION OF TRANSFER IN THE REGISTER
THEREFOR.]

The terms set forth in this Assignment and Assumption are hereby agreed to:

                                    ASSIGNOR

                                    [NAME OF ASSIGNOR]

                                    By: ________________________________________
                                        Name:  _________________________________
                                        Title: _________________________________

                                    ASSIGNEE

                                    [NAME OF ASSIGNEE]

                                    By: ________________________________________
                                        Name:  _________________________________
                                        Title: _________________________________

ASSIGNMENT AND ASSUMPTION, Page 2

<PAGE>

[Consented to and] Accepted:

JPMORGAN CHASE BANK, as
  Administrative Agent

By: ________________________________________
    Name:  _________________________________
    Title: _________________________________

[Consented to:]

CENTEX CONSTRUCTION PRODUCTS, INC.

By: ________________________________________
    Name:  _________________________________
    Title: _________________________________

ASSIGNMENT AND ASSUMPTION, Page 3

<PAGE>

                                                                         ANNEX 1

                       CENTEX CONSTRUCTION PRODUCTS, INC.
                    CREDIT AGREEMENT DATED DECEMBER 18, 2003
                          STANDARD TERMS AND CONDITIONS
                                       FOR
                            ASSIGNMENT AND ASSUMPTION

                  1.       Representations and Warranties.

                  1.1      Assignor. The Assignor (a) represents and warrants
that (i) it is the legal and beneficial owner of the Assigned Interest, (ii) the
Assigned Interest is free and clear of any lien, encumbrance or other adverse
claim and (iii) it has full power and authority, and has taken all action
necessary, to execute and deliver this Assignment and Assumption and to
consummate the transactions contemplated hereby; and (b) assumes no
responsibility with respect to (i) any statements, warranties or representations
made in or in connection with the Credit Agreement or any other Loan Document,
(ii) the execution, legality, validity, enforceability, genuineness, sufficiency
or value of the Loan Documents or any collateral thereunder, (iii) the financial
condition of the Borrower, any of the Subsidiaries or Affiliates or any other
Person obligated in respect of any Loan Document or (iv) the performance or
observance by the Borrower, any of the Subsidiaries or Affiliates or any other
Person of any of their respective obligations under any Loan Document.

                  1.2.     Assignee. The Assignee (a) represents and warrants
that (i) it has full power and authority, and has taken all action necessary, to
execute and deliver this Assignment and Assumption and to consummate the
transactions contemplated hereby and to become a Lender under the Credit
Agreement, (ii) it satisfies the requirements, if any, specified in the Credit
Agreement that are required to be satisfied by it in order to acquire the
Assigned Interest and become a Lender, (iii) from and after the Effective Date,
it shall be bound by the provisions of the Credit Agreement as a Lender
thereunder and, to the extent of the Assigned Interest, shall have the
obligations of a Lender thereunder, (iv) it has received a copy of the Credit
Agreement, together with copies of the most recent financial statements
delivered pursuant to Section 5.01 thereof, as applicable, and such other
documents and information as it has deemed appropriate to make its own credit
analysis and decision to enter into this Assignment and Assumption and to
purchase the Assigned Interest on the basis of which it has made such analysis
and decision independently and without reliance on the Administrative Agent or
any other Lender, and (v) if it is a Foreign Lender, attached to the Assignment
and Assumption is any documentation required to be delivered by it pursuant to
the terms of the Credit Agreement, duly completed and executed by the Assignee;
and (b) agrees that (i) it will, independently and without reliance on the
Administrative Agent, the Assignor 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 the Loan
Documents, and (ii) it will perform in accordance with their terms all of the
obligations which by the terms of the Loan Documents are required to be
performed by it as a Lender.

                  2.       Payments. From and after the Effective Date, the
Administrative Agent shall make all payments in respect of the Assigned Interest
(including payments of principal, interest, fees and other amounts) to the
Assignor for amounts which have accrued to but excluding the Effective Date and
to the Assignee for amounts which have accrued from and after the Effective
Date.

                  3.       General Provisions. This Assignment and Assumption
shall be binding upon, and inure to the benefit of, the parties hereto and their
respective successors and assigns. This Assignment and Assumption may be
executed in any number of counterparts, which together shall constitute one
instrument. Delivery of an executed counterpart of a signature page of this
Assignment and Assumption by telecopy shall be effective as delivery of a
manually executed counterpart of this Assignment and Assumption. This Assignment
and Assumption shall be governed by, and construed in accordance with, the law
of the State of Texas.

ANNEX 1 to Assignment and Assumption, Solo Page

<PAGE>

                                    EXHIBIT B
                                       TO
                        CENTEX CONSTRUCTION PRODUCTS, INC
                                CREDIT AGREEMENT

                   Form of Opinion of Counsel for the Borrower
                                [Effective Date]

To the Lenders and the Administrative
  Agent Referred to Below
c/o JPMorgan Chase Bank, as
  Administrative Agent
2200 Ross Avenue, 3rd Floor
Dallas, Texas, TX 75201

Dear Sirs:

         We have acted as counsel for Centex Construction Products, Inc., a
Delaware corporation (the "Borrower") and the guarantors listed in Appendix 1
attached hereto (the "Guarantors") (the Borrower and the Guarantors being
collectively referred to hereafter as the "Obligated Parties") in connection
with the Credit Agreement dated as of December 18, 2003 (the "Credit Agreement")
among the Borrower, the banks and other financial institutions identified
therein as Lenders, and JPMorgan Chase Bank, as Administrative Agent. Terms
defined in the Credit Agreement are used herein with the same meanings.

         We have examined originals or copies, certified or otherwise identified
to our satisfaction, of such documents, corporate records, certificates of
public officials and other instruments and have conducted such other
investigations of fact and law as we have deemed necessary or advisable for
purposes of this opinion.

         Upon the basis of the foregoing, we are of the opinion that:

         1.       Each of the Obligated Parties (a) is a business entity duly
organized, validly existing and in good standing under the laws of its state of
formation, (b) has all requisite corporate, limited liability company or
partnership power and authority to carry on its business as now conducted and
(c) except where the failure to do so, individually or in the aggregate, could
not reasonably be expected to result in a Material Adverse Effect, is qualified
to do business in, and is in good standing in, every jurisdiction where such
qualification is required.

         2.       The Transactions are within each of the Obligated Parties'
corporate, limited liability company or partnership powers and have been duly
authorized by all necessary corporate, company or partnership action and, if
required, stockholder, member, manager or partner action. Each of the Obligated
Parties has duly executed and delivered the Loan Documents to which it is a
party and such Loan Documents constitute the legal, valid and binding obligation
of each of the Obligated Parties which are parties thereto, enforceable in
accordance with their terms, subject to applicable bankruptcy, insolvency,
reorganization, moratorium or other laws affecting creditors' rights generally
and subject to general principles of equity, regardless of whether considered in
a proceeding in equity or at law.

         3.       The Transactions (a) do not require any consent or approval
of, registration or filing with, or any other action by, any Governmental
Authority, except such as have been obtained or made and are in full force and
effect, (b) will not violate any applicable law or regulation or the charter,
by-laws or

EXHIBIT B, OPINION OF COUNSEL FOR THE BORROWER, Page 1

<PAGE>

other organizational documents of Borrower or any of the Subsidiaries or any
order of any Governmental Authority, (c) to the best of our knowledge after due
inquiry, will not violate or result in a default under any indenture, agreement
or other instrument binding upon Borrower or any of the Subsidiaries or any of
their respective assets, or give rise to a right thereunder to require any
payment to be made by Borrower or any of the Subsidiaries, and (d) to the best
of our knowledge after due inquiry, will not result in the creation or
imposition of any Lien on any asset of Borrower or any Subsidiary.

         4.       To the best of our knowledge after due inquiry, there are no
actions, suits or proceedings by or before any arbitrator or Governmental
Authority pending against or threatened against or affecting Borrower or any
Subsidiary (a) as to which there is a reasonable expectation of an adverse
determination and that, if adversely determined, could reasonably be expected,
individually or in the aggregate, to have a Material Adverse Effect (other than
the Disclosed Matters) or (b) that involve the Loan Documents or the
Transactions.

         We are members of the bar of the State of Texas and the foregoing
opinion is limited to the laws of the State of Texas, the General Corporation
Law of each state in which any Obligated Party is organized and the Federal laws
of the United States of America. This opinion is rendered solely to you in
connection with the above matter. This opinion may not be relied upon by you for
any other purpose or relied upon by any other Person (other than your successors
and assigns as Lenders and Persons that acquire participations in your Loans)
without our prior written consent.

                                     Very truly yours,

EXHIBIT B, OPINION OF COUNSEL FOR THE BORROWER, Page 2

<PAGE>

                                   APPENDIX 1
                                       TO
                                  LEGAL OPINION

                                   Guarantors

AMERICAN GYPSUM COMPANY
AMERICAN GYPSUM MARKETING COMPANY
CCP CEMENT COMPANY
CCP CONCRETE/AGGREGATES LLC
CCP GYPSUM COMPANY
CCP LAND COMPANY
CENTEX CEMENT CORPORATION
CENTEX MATERIALS LLC
HOLLIS & EASTERN RAILROAD COMPANY LLC
MATHEWS READYMIX LLC
M&W DRYWALL SUPPLY COMPANY
MOUNTAIN CEMENT COMPANY
NEVADA CEMENT COMPANY
REPUBLIC PAPERBOARD COMPANY LLC
TLCC GP LLC
TLCC LP LLC
TEXAS CEMENT COMPANY
WESTERN AGGREGATES, INC.
WESTERN CEMENT COMPANY OF CALIFORNIA

EXHIBIT B, OPINION OF COUNSEL FOR THE BORROWER, Page 3

<PAGE>

                                    EXHIBIT C
                                       TO
                        CENTEX CONSTRUCTION PRODUCTS, INC
                                CREDIT AGREEMENT

                           Form of Subsidiary Guaranty

EXHIBIT C, FORM OF GUARANTY AGREEMENT, Cover Page

<PAGE>

                               GUARANTY AGREEMENT

         WHEREAS, CENTEX CONSTRUCTION PRODUCTS, INC., a Delaware corporation
(the "Borrower") has entered into that certain Credit Agreement dated as of
December 18, 2003, among Borrower, the lenders party thereto (the "Lenders"),
and JPMORGAN CHASE BANK, as the administrative agent for such Lenders (the
"Administrative Agent") (such Credit Agreement, as it may hereafter be amended
or otherwise modified from time to time, being hereinafter referred to as the
"Credit Agreement", and capitalized terms not otherwise defined herein shall
have the same meaning as set forth in the Credit Agreement);

         WHEREAS, the execution of this Guaranty Agreement is a condition to the
Administrative Agent's and each Lender's obligations under the Credit Agreement;

         NOW, THEREFORE, for valuable consideration, the receipt and adequacy of
which are hereby acknowledged, each of the undersigned Subsidiaries and any
Subsidiary hereafter added as a "Guarantor" hereto pursuant to a Subsidiary
Joinder Agreement in the form attached hereto as Exhibit A (individually a
"Guarantor" and collectively the "Guarantors"), hereby irrevocably and
unconditionally guaranties to the Administrative Agent, the Lenders, the Issuing
Banks and their respective Related Parties (collectively the "Creditors") the
full and prompt payment and performance of the Guarantied Indebtedness
(hereinafter defined), this Guaranty Agreement being upon the following terms:

         1.       The term "Guarantied Indebtedness", as used herein, means: (i)
all obligations, indebtedness, and liabilities of the Borrower to any Creditor
arising pursuant to the Credit Agreement, any note executed pursuant thereto or
any other Loan Document, whether now existing or hereafter arising, whether
direct, indirect, related, unrelated, fixed, contingent, liquidated,
unliquidated, joint, several, or joint and several, including, without
limitation, the obligation of the Borrower to repay the Loans, the LC
Disbursements, interest on the Loans and LC Disbursements, and all fees, costs,
and expenses (including attorneys' fees and expenses) provided for in the Credit
Agreement and the notes executed pursuant thereto and (ii) all obligations,
indebtedness, and liabilities of the Borrower or any Subsidiaries, or any one of
them, to any Lender or any Affiliate of any Lender arising pursuant to any Swap
Agreements entered into by such Creditor with the Borrower or any Subsidiaries,
or any one of them, whether now existing or hereafter arising, whether direct,
indirect, related, unrelated, fixed, contingent, liquidated, unliquidated,
joint, several, or joint and several, including, without limitation, all fees,
costs, and expenses (including attorneys' fees and expenses) provided for in
such Swap Agreements. The "Guarantied Indebtedness" shall include any and all
post-petition interest and expenses (including attorneys' fees) whether or not
allowed under any bankruptcy, insolvency, or other similar law; provided that
the Guarantied Indebtedness shall be limited, with respect to each Guarantor, to
an aggregate amount equal to the largest amount that would not render such
Guarantor's obligations hereunder subject to avoidance under Section 544 or 548
of the United States Bankruptcy Code or under any applicable state law relating
to fraudulent transfers or conveyances.

         2.       The Guarantors together desire to allocate among themselves
(collectively, the "Contributing Guarantors"), in a fair and equitable manner,
their obligations arising under this Guaranty Agreement. Accordingly, in the
event any payment or distribution is made by a Guarantor under this Guaranty
Agreement (a "Funding Guarantor") that exceeds its Fair Share (as defined
below), that Funding Guarantor shall be entitled to a contribution from each of
the other Contributing Guarantors in the amount of such other Contributing
Guarantor's Fair Share Shortfall (as defined below), with the result that all
such contributions will cause each Contributing Guarantor's Aggregate Payments
(as defined below) to equal its Fair Share. "Fair Share" means, with respect to
a Contributing Guarantor as of any date of determination, an amount equal to (i)
the ratio of (x) the Adjusted Maximum Amount (as defined below) with respect to
such Contributing Guarantor to (y) the aggregate of the Adjusted Maximum Amounts
with

GUARANTY AGREEMENT, Page 1

<PAGE>

respect to all Contributing Guarantors, multiplied by (ii) the aggregate amount
paid or distributed on or before such date by all Funding Guarantors under this
Guaranty Agreement in respect of the obligations guarantied. "Fair Share
Shortfall" means, with respect to a Contributing Guarantor as of any date of
determination, the excess, if any, of the Fair Share of such Contributing
Guarantor over the Aggregate Payments of such Contributing Guarantor. "Adjusted
Maximum Amount" means, with respect to a Contributing Guarantor as of any date
of determination, the maximum aggregate amount of the obligations of such
Contributing Guarantor under this Guaranty Agreement determined in accordance
with the provisions hereof; provided that, solely for purposes of calculating
the "Adjusted Maximum Amount" with respect to any Contributing Guarantor for
purposes of this paragraph 2, the assets or liabilities arising by virtue of any
rights to or obligations of contribution hereunder shall not be considered as
assets or liabilities of such Contributing Guarantor. "Aggregate Payments"
means, with respect to a Contributing Guarantor as of any date of determination,
the aggregate amount of all payments and distributions made on or before such
date by such Contributing Guarantor in respect of this Guaranty Agreement
(including, without limitation, in respect of this paragraph 2). The amounts
payable as contributions hereunder shall be determined as of the date on which
the related payment or distribution is made by the applicable Funding Guarantor.
The allocation among Contributing Guarantors of their obligations as set forth
in this paragraph 2 shall not be construed in any way to limit the liability of
any Contributing Guarantor hereunder.

         3.       This instrument shall be an absolute, continuing, irrevocable
and unconditional guaranty of payment and performance, and not a guaranty of
collection, and each Guarantor shall remain liable on its obligations hereunder
until the payment and performance in full of the Guarantied Indebtedness. No
set-off, counterclaim, recoupment, reduction, or diminution of any obligation,
or any defense of any kind or nature which Borrower or any Subsidiary may have
against any Creditor or any other party, or which any Guarantor may have against
Borrower or any Subsidiary, any Creditor or any other party, shall be available
to, or shall be asserted by, any Guarantor against any Creditor or any
subsequent holder of the Guarantied Indebtedness or any part thereof or against
payment of the Guarantied Indebtedness or any part thereof.

         4.       If a Guarantor becomes liable for any indebtedness owing by
Borrower or any Subsidiary to any Creditor by endorsement or otherwise, other
than under this Guaranty Agreement, such liability shall not be in any manner
impaired or affected hereby, and the rights of the Creditors hereunder shall be
cumulative of any and all other rights that any Creditor may ever have against
such Guarantor. The exercise by any Creditor of any right or remedy hereunder or
under any other instrument, or at law or in equity, shall not preclude the
concurrent or subsequent exercise of any other right or remedy.

         5.       In the event of default by Borrower or any Subsidiary in
payment or performance of the Guarantied Indebtedness, or any part thereof, when
such Guarantied Indebtedness becomes due, whether by its terms, by acceleration,
or otherwise, the Guarantors shall, jointly and severally, promptly pay the
amount due thereon to Agent, without notice or demand, in lawful currency of the
United States of America, and it shall not be necessary for Agent or any other
Creditor, in order to enforce such payment by any Guarantor, first to institute
suit or exhaust its remedies against Borrower, any Subsidiary or others liable
on such Guarantied Indebtedness, or to enforce any rights against any collateral
which shall ever have been given to secure such Guarantied Indebtedness. In the
event such payment is made by a Guarantor, then such Guarantor shall be
subrogated to the rights then held by Agent and any other Creditor with respect
to the Guarantied Indebtedness to the extent to which the Guarantied
Indebtedness was discharged by such Guarantor and, in addition, upon payment by
such Guarantor of any sums to Agent or any other Creditor hereunder, all rights
of such Guarantor against Borrower, any Subsidiary, any other guarantor or any
collateral arising as a result therefrom by way of right of subrogation,
reimbursement, or otherwise shall in all respects be subordinate and junior in
right of payment to the prior indefeasible payment in full of the Guarantied
Indebtedness. All payments received by the

GUARANTY AGREEMENT, Page 2

<PAGE>

Administrative Agent hereunder shall be applied by the Administrative Agent to
payment of the Guarantied Indebtedness in the order provided for in Section 2.17
of the Credit Agreement.

         6.       If acceleration of the time for payment of any amount payable
by Borrower or any Subsidiary under the Guarantied Indebtedness is stayed upon
the insolvency, bankruptcy, or reorganization of Borrower or any Subsidiary, all
such amounts otherwise subject to acceleration under the terms of the Guarantied
Indebtedness shall nonetheless be payable by the Guarantors hereunder forthwith
on demand by Agent or any other Creditor.

         7.       Each Guarantor hereby agrees that its obligations under this
Guaranty Agreement shall not be released, discharged, diminished, impaired,
reduced, or affected for any reason or by the occurrence of any event,
including, without limitation, one or more of the following events, whether or
not with notice to or the consent of any Guarantor: (a) the taking or accepting
of collateral as security for any or all of the Guarantied Indebtedness or the
release, surrender, exchange, or subordination of any collateral now or
hereafter securing any or all of the Guarantied Indebtedness; (b) any partial
release of the liability of any Guarantor hereunder, or the full or partial
release of any other guarantor from liability for any or all of the Guarantied
Indebtedness; (c) any disability of Borrower or any Subsidiary, or the
dissolution, insolvency, or bankruptcy of Borrower, any Subsidiary, any
Guarantor, or any other party at any time liable for the payment of any or all
of the Guarantied Indebtedness; (d) any renewal, extension, modification,
waiver, amendment, or rearrangement of any or all of the Guarantied Indebtedness
or any instrument, document, or agreement evidencing, securing, or otherwise
relating to any or all of the Guarantied Indebtedness; (e) any adjustment,
indulgence, forbearance, waiver, or compromise that may be granted or given by
Agent or any other Creditor to Borrower, any Subsidiary, any Guarantor, or any
other party ever liable for any or all of the Guarantied Indebtedness; (f) any
neglect, delay, omission, failure, or refusal of Agent or any other Creditor to
take or prosecute any action for the collection of any of the Guarantied
Indebtedness or to foreclose or take or prosecute any action in connection with
any instrument, document, or agreement evidencing, securing, or otherwise
relating to any or all of the Guarantied Indebtedness; (g) the unenforceability
or invalidity of any or all of the Guarantied Indebtedness or of any instrument,
document, or agreement evidencing, securing, or otherwise relating to any or all
of the Guarantied Indebtedness; (h) any payment by Borrower, any Subsidiary or
any other party to Agent or any other Creditor is held to constitute a
preference under applicable bankruptcy or insolvency law or if for any other
reason Agent or any other Creditor is required to refund any payment or pay the
amount thereof to someone else; (i) the settlement or compromise of any of the
Guarantied Indebtedness; (j) the non-perfection of any security interest or lien
securing any or all of the Guarantied Indebtedness; (k) any impairment of any
collateral securing any or all of the Guarantied Indebtedness; (l) the failure
of Agent or any other Creditor to sell any collateral securing any or all of the
Guarantied Indebtedness in a commercially reasonable manner or as otherwise
required by law; (m) any change in the corporate existence, structure, or
ownership of Borrower or any Subsidiary; or (n) any other circumstance which
might otherwise constitute a defense available to, or discharge of, Borrower,
any Subsidiary or any other Guarantor (other than payment of the Guarantied
Indebtedness).

         8.       Each Guarantor represents and warrants to Agent and the
Lenders as follows:

                  (a)      All representations and warranties in the Credit
Agreement relating to it are true and correct as of the date hereof and on each
date the representations and warranties hereunder are restated pursuant to the
Credit Agreement with the same force and effect as if such representations and
warranties had been made on and as of such date.

                  (b)      It has, independently and without reliance upon any
Creditor and based upon such documents and information as it has deemed
appropriate, made its own analysis and decision to enter into this Guaranty
Agreement.

GUARANTY AGREEMENT, Page 3

<PAGE>

                  (c)      It has adequate means to obtain from Borrower and the
Subsidiaries on a continuing basis information concerning the financial
condition and assets of Borrower and the Subsidiaries and it is not relying upon
any Creditor to provide (and no Creditor shall have any duty to provide) any
such information to it either now or in the future.

                  (2)      The value of the consideration received and to be
received by each Guarantor as a result of Borrower's and the Lenders' entering
into the Credit Agreement and the Borrower and the Subsidiaries entering into
the Swap Agreements and each Guarantor's executing and delivering this Guaranty
Agreement is reasonably worth at least as much as the liability and obligation
of each Guarantor hereunder, and such liability and obligation, the Credit
Agreement and such Swap Agreements have benefited and may reasonably be expected
to benefit each Guarantor directly or indirectly.

         9.       Each Guarantor covenants and agrees that, as long as the
Guarantied Indebtedness or any part thereof is outstanding or any Lender has any
commitment under the Credit Agreement, it will comply with all covenants set
forth in the Credit Agreement specifically applicable to it.

         10.      When an Event of Default exists and subject to the terms of
Section 2.17 of the Credit Agreement, Agent and each other Creditor shall have
the right to set-off and apply against this Guaranty Agreement or the Guarantied
Indebtedness or both, at any time and without notice to any Guarantor, any and
all deposits (general or special, time or demand, provisional or final) or other
sums at any time credited by or owing from Agent and each other Creditor to any
Guarantor whether or not the Guarantied Indebtedness is then due and
irrespective of whether or not Agent or any other Creditor shall have made any
demand under this Guaranty Agreement. Each Creditor agrees promptly to notify
the Borrower (with a copy to the Administrative Agent) after any such setoff and
application, provided that the failure to give such notice shall not affect the
validity of such setoff and application. The rights and remedies of Agent and
other Creditors hereunder are in addition to other rights and remedies
(including, without limitation, other rights of set-off) which Agent or any
other Creditor may have.

         11.      (a)      Each Guarantor hereby agrees that the Subordinated
Indebtedness (as defined below) shall be subordinate and junior in right of
payment to the prior payment in full of all Guarantied Indebtedness as herein
provided. The Subordinated Indebtedness shall not be payable, and no payment of
principal, interest or other amounts on account thereof, and no property or
guaranty of any nature to secure or pay the Subordinated Indebtedness shall be
made or given, directly or indirectly by or on behalf of any Debtor (hereafter
defined) or received, accepted, retained or applied by any Guarantor unless and
until the Guarantied Indebtedness shall have been paid in full in cash; except
that prior to the occurrence and continuance of an Event of Default, each Debtor
shall have the right to make payments and a Guarantor shall have the right to
receive payments on the Subordinated Indebtedness from time to time in the
ordinary course of business. After the occurrence and during the continuance of
an Event of Default, no payments may be made or given on the Subordinated
Indebtedness, directly or indirectly, by or on behalf of any Debtor or received,
accepted, retained or applied by any Guarantor unless and until the Guarantied
Indebtedness shall have been paid in full in cash. If any sums shall be paid to
a Guarantor by any Debtor or any other Person on account of the Subordinated
Indebtedness when such payment is not permitted hereunder, such sums shall be
held in trust by such Guarantor for the benefit of Agent and the other Creditors
and shall forthwith be paid to Agent and applied by Agent against the Guarantied
Indebtedness in accordance with this Guaranty Agreement. For purposes of this
Guaranty Agreement and with respect to a Guarantor, the term "Subordinated
Indebtedness" means all indebtedness, liabilities, and obligations of Borrower
or any other Subsidiary (Borrower and such other Subsidiaries herein the
"Debtors") to such Guarantor, whether such indebtedness, liabilities, and
obligations now exist or are hereafter incurred or arise, or are direct,
indirect, contingent, primary, secondary, several, joint and several, or
otherwise, and irrespective of whether such indebtedness, liabilities, or
obligations are evidenced by a note, contract, open account, or otherwise, and
irrespective of the Person or Persons in

GUARANTY AGREEMENT, Page 4

<PAGE>

whose favor such indebtedness, obligations, or liabilities may, at their
inception, have been, or may hereafter be created, or the manner in which they
have been or may hereafter be acquired by such Guarantor.

                  (b)      Each Guarantor agrees that any and all Liens
(including any judgment liens), upon any Debtor's assets securing payment of any
Subordinated Indebtedness shall be and remain inferior and subordinate to any
and all Liens upon any Debtor's assets securing payment of the Guarantied
Indebtedness or any part thereof, regardless of whether such Liens in favor of a
Guarantor, Agent or any other Creditor presently exist or are hereafter created
or attached. Without the prior written consent of Agent, no Guarantor shall (i)
file suit against any Debtor or exercise or enforce any other creditor's right
it may have against any Debtor, or (ii) foreclose, repossess, sequester, or
otherwise take steps or institute any action or proceedings (judicial or
otherwise, including without limitation the commencement of, or joinder in, any
liquidation, bankruptcy, rearrangement, debtor's relief or insolvency
proceeding) to enforce any obligations of any Debtor to such Guarantor or any
Liens held by such Guarantor on assets of any Debtor.

                  (c)      In the event of any receivership, bankruptcy,
reorganization, rearrangement, debtor's relief, or other insolvency proceeding
involving any Debtor as debtor, Agent shall have the right to prove and vote any
claim under the Subordinated Indebtedness and to receive directly from the
receiver, trustee or other court custodian all dividends, distributions, and
payments made in respect of the Subordinated Indebtedness until the Guarantied
Indebtedness has been paid in full in cash. Agent may apply any such dividends,
distributions, and payments against the Guarantied Indebtedness in accordance
with the Credit Agreement.

         12.      Except for modifications made pursuant to the execution and
delivery of a Subsidiary Joinder Agreement (which needs to be signed only by the
Subsidiary party thereto) and the release of any Guarantor from its obligations
hereunder (which shall require the consent of all Lenders unless such release is
authorized by Section 9.02 of the Credit Agreement); no amendment or waiver of
any provision of this Guaranty Agreement or consent to any departure by any
Guarantor therefrom shall in any event be effective unless the same shall be in
writing and signed by Agent and Required Lenders except as otherwise provided in
the Credit Agreement. No failure on the part of Agent or any other Creditor to
exercise, and no delay in exercising, any right, power, or privilege hereunder
shall operate as a waiver thereof; nor shall any single or partial exercise of
any right, power, or privilege hereunder preclude any other or further exercise
thereof or the exercise of any other right, power, or privilege. The remedies
herein provided are cumulative and not exclusive of any remedies provided by
law.

         13.      To the extent permitted by law, any acknowledgment or new
promise, whether by payment of principal or interest or otherwise and whether by
Borrower or others (including any Guarantor), with respect to any of the
Guarantied Indebtedness shall, if the statute of limitations in favor of a
Guarantor against Agent or any other Creditor shall have commenced to run, toll
the running of such statute of limitations and, if the period of such statute of
limitations shall have expired, prevent the operation of such statute of
limitations.

         14.      This Guaranty Agreement is for the benefit of the Creditors
and their successors and assigns, and in the event of an assignment of the
Guarantied Indebtedness, or any part thereof, the rights and benefits hereunder,
to the extent applicable to the indebtedness so assigned, may be transferred
with such indebtedness. This Guaranty Agreement is binding not only on each
Guarantor, but on each Guarantor's successors and assigns.

         15.      Each Guarantor recognizes that Agent and the Lenders are
relying upon this Guaranty Agreement and the undertakings of each Guarantor
hereunder in making extensions of credit to Borrower under the Credit Agreement
and further recognizes that the execution and delivery of this Guaranty

GUARANTY AGREEMENT, Page 5

<PAGE>

Agreement is a material inducement to Agent and the Lenders in entering into the
Credit Agreement and continuing to extend credit thereunder. Each Guarantor
hereby acknowledges that there are no conditions to the full effectiveness of
this Guaranty Agreement.

         16.      Any notice or demand to any Guarantor under or in connection
with this Guaranty Agreement shall be deemed effective if given to the
Guarantor, care of Borrower in accordance with the notice provisions in the
Credit Agreement.

         17.      The Guarantors shall, jointly and severally, pay on demand all
reasonable attorneys' fees and all other reasonable costs and expenses incurred
by Agent and the other Creditors in connection with the administration,
enforcement, or collection of this Guaranty Agreement.

         18.      Except as otherwise specifically provided in the Credit
Agreement, each Guarantor hereby waives promptness, diligence, notice of any
default under the Guarantied Indebtedness, demand of payment, notice of
acceptance of this Guaranty Agreement, presentment, notice of protest, notice of
dishonor, notice of the incurring by Borrower of additional indebtedness, notice
of intent to accelerate, notice of acceleration and all other notices and
demands with respect to the Guarantied Indebtedness and this Guaranty Agreement.

         19.      The Credit Agreement, and all of the terms thereof, are
incorporated herein by reference, the same as if stated verbatim herein, and
each Guarantor agrees that Agent and the Lenders may exercise any and all rights
granted to any of them under the Credit Agreement without affecting the validity
or enforceability of this Guaranty Agreement.

         20.      THIS GUARANTY AGREEMENT EMBODIES THE FINAL, ENTIRE AGREEMENT
OF EACH GUARANTOR, AGENT AND THE OTHER CREDITORS WITH RESPECT TO EACH
GUARANTOR'S GUARANTY OF THE GUARANTIED INDEBTEDNESS AND SUPERSEDES ANY AND ALL
PRIOR COMMITMENTS, AGREEMENTS, REPRESENTATIONS, AND UNDERSTANDINGS, WHETHER
WRITTEN OR ORAL, RELATING TO THE SUBJECT MATTER HEREOF. THIS GUARANTY AGREEMENT
IS INTENDED BY EACH GUARANTOR, AGENT AND THE OTHER CREDITORS AS A FINAL AND
COMPLETE EXPRESSION OF THE TERMS OF THE GUARANTY AGREEMENT, AND NO COURSE OF
DEALING AMONG ANY GUARANTOR, AGENT AND ANY other CREDITOR, NO COURSE OF
PERFORMANCE, NO TRADE PRACTICES, AND NO EVIDENCE OF PRIOR, CONTEMPORANEOUS OR
SUBSEQUENT ORAL AGREEMENTS OR DISCUSSIONS OR OTHER EXTRINSIC EVIDENCE OF ANY
NATURE SHALL BE USED TO CONTRADICT, VARY, SUPPLEMENT OR MODIFY ANY TERM OF THIS
GUARANTY AGREEMENT. THERE ARE NO ORAL AGREEMENTS AMONG ANY GUARANTOR, AGENT AND
ANY OTHER CREDITOR.

         21.      This Guaranty Agreement shall be construed in accordance with
and governed by the law of the State of Texas. EACH GUARANTOR HEREBY IRREVOCABLY
AND UNCONDITIONALLY SUBMITS, FOR ITSELF AND ITS PROPERTY, TO THE NONEXCLUSIVE
JURISDICTION OF THE STATE COURTS OF THE STATE OF TEXAS SITTING IN DALLAS COUNTY
AND OF THE UNITED STATES DISTRICT COURT OF THE NORTHERN DISTRICT OF TEXAS, AND
ANY APPELLATE COURT FROM ANY THEREOF, IN ANY ACTION OR PROCEEDING ARISING OUT OF
OR RELATING TO THIS GUARANTY AGREEMENT, 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 SUCH TEXAS STATE OR, TO THE EXTENT PERMITTED BY LAW, IN SUCH
FEDERAL COURT. 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

GUARANTY AGREEMENT, Page 6

<PAGE>

BY SUIT ON THE JUDGMENT OR IN ANY OTHER MANNER PROVIDED BY LAW. NOTHING IN THIS
AGREEMENT SHALL AFFECT ANY RIGHT THAT ANY CREDITOR MAY OTHERWISE HAVE TO BRING
ANY ACTION OR PROCEEDING RELATING TO THIS GUARANTY AGREEMENT AGAINST ANY
GUARANTOR OR ITS PROPERTIES IN THE COURTS OF ANY JURISDICTION. Each Guarantor
hereby irrevocably and unconditionally waives, to the fullest extent it may
legally and effectively do so, any objection which it may now or hereafter have
to the laying of venue of any suit, action or proceeding arising out of or
relating to this Guaranty Agreement in any court referred to in this Section.
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. Each party to this Guaranty
Agreement irrevocably consents to service of process in the manner provided for
notices in Section 9.01 of the Credit Agreement. Nothing in this Guaranty
Agreement will affect the right of any party to this Guaranty Agreement to serve
process in any other manner permitted by law.

         22.      EACH PARTY HERETO HEREBY WAIVES, TO THE FULLEST EXTENT
PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN ANY
LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS
AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY (WHETHER BASED ON CONTRACT,
TORT OR ANY OTHER THEORY). EACH PARTY HERETO (A) CERTIFIES THAT NO
REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY
OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK
TO ENFORCE THE FOREGOING WAIVER AND (B) ACKNOWLEDGES THAT IT AND THE OTHER
PARTIES HERETO HAVE BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER
THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION.

         EXECUTED as of the date first written above.

                               GUARANTORS:

                               AMERICAN GYPSUM COMPANY
                               AMERICAN GYPSUM MARKETING COMPANY
                               CCP CEMENT COMPANY
                               CCP CONCRETE/AGGREGATES LLC
                               CCP GYPSUM COMPANY
                               CCP LAND COMPANY
                               CENTEX CEMENT CORPORATION
                               HOLLIS & EASTERN RAILROAD COMPANY LLC
                               MATHEWS READYMIX LLC
                               M&W DRYWALL SUPPLY COMPANY
                               MOUNTAIN CEMENT COMPANY
                               NEVADA CEMENT COMPANY
                               REPUBLIC PAPERBOARD COMPANY LLC
                               TEXAS CEMENT COMPANY
                               WESTERN AGGREGATES, INC.
                               WESTERN CEMENT COMPANY OF CALIFORNIA

                               By:____________________________________________
                                  Arthur R. Zunker, Jr., Senior Vice President
                                  Finance and Treasurer of each Guarantor

GUARANTY AGREEMENT, Page 7

<PAGE>

                         CENTEX MATERIALS LLC
                         TLCC GP LLC

                         By:________________________________________________
                            Arthur R. Zunker, Jr., Manager of the Guarantors
                            listed

                         TLCC LP LLC

                         By:________________________________________________
                            Nicholas Stiren, Manager of the Guarantor listed

GUARANTY AGREEMENT, Page 8

<PAGE>

                                   EXHIBIT "A"
                                       TO
                               GUARANTY AGREEMENT

                          Subsidiary Joinder Agreement

EXHIBIT "A" to GUARANTY AGREEMENT, Cover Page

<PAGE>

                          SUBSIDIARY JOINDER AGREEMENT

         This SUBSIDIARY JOINDER AGREEMENT (the "Agreement") dated as of
____________________, ____ is executed by the undersigned (the "Guarantor") for
the benefit of JPMORGAN CHASE BANK, in its capacity as agent for the lenders
party to the hereafter identified Credit Agreement and for the benefit of such
lenders and certain other creditors in connection with that certain Credit
Agreement dated as of December 18, 2003 among Centex Construction Products, Inc.
("Borrower"), the lenders party thereto, JPMORGAN CHASE BANK, as the
administrative agent for the Lenders (the "Agent") (such Credit Agreement, as it
may hereafter be amended or otherwise modified from time to time, being
hereinafter referred to as the "Credit Agreement", and capitalized terms not
otherwise defined herein shall have the same meaning as set forth in the Credit
Agreement).

         The Guarantor is a newly formed or newly acquired Subsidiary and is
required to execute this Agreement pursuant to Section 5.09 of the Credit
Agreement.

         NOW THEREFORE, in consideration of the premises and other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the Guarantor hereby agrees as follows:

         1.       The Guarantor hereby assumes all the obligations of a
"Guarantor" under the Subsidiary Guaranty and agrees that it is a "Guarantor"
and bound as a "Guarantor" under the terms of the Subsidiary Guaranty as if it
had been an original signatory thereto. In accordance with the foregoing and for
valuable consideration, the receipt and adequacy of which are hereby
acknowledged, Guarantor irrevocably and unconditionally guaranties to the
Administrative Agent and the other Creditors the full and prompt payment and
performance of the Guarantied Indebtedness (as defined in the Subsidiary
Guaranty) upon the terms and conditions set forth in the Subsidiary Guaranty.

         2.       This Agreement shall be deemed to be part of, and a
modification to, the Subsidiary Guaranty and shall be governed by all the terms
and provisions of the Subsidiary Guaranty, which terms are incorporated herein
by reference, are ratified and confirmed and shall continue in full force and
effect as valid and binding agreements of Guarantor enforceable against
Guarantor. The Guarantor hereby waives notice of Administrative Agent's, the
Issuing Banks' or any other Lender's acceptance of this Agreement.

         IN WITNESS WHEREOF, the Guarantor has executed this Agreement as of the
day and year first written above.

                               Guarantor:

                               By: _____________________________________________
                                   Name:  ______________________________________
                                   Title: ______________________________________

SUBSIDIARY JOINDER AGREEMENT, Solo Page

<PAGE>

                                    EXHIBIT D
                                       TO
                        CENTEX CONSTRUCTION PRODUCTS, INC
                                CREDIT AGREEMENT

                           Form of Notice of Borrowing

EXHIBIT D, FORM OF NOTICE OF BORROWING, Cover Page

<PAGE>

                                                                          [DATE]

JPMorgan Chase Bank, as Administrative
Agent for the Lenders referred to below
2200 Ross Avenue, 3rd Floor
Dallas, TX 75201
Attn: David L. Howard
Telecopy: 214-965-2044

and

JPMorgan Chase Bank
1111 Fannin St., 10th Floor
Houston, Texas 77002
Attn: Rese Comley
Telecopy: 713-750-2892

Ladies and Gentlemen:

         The undersigned, Centex Construction Products, Inc. (the "Borrower"),
refers to the Credit Agreement dated as of December 18, 2003 among the Borrower,
the Lenders named therein and JPMorgan Chase Bank, as Administrative Agent (as
amended, modified, extended or restated from time to time, the "Agreement").
Capitalized terms used herein and not otherwise defined herein shall have the
meanings assigned to such terms in the Agreement.

         1.       The Borrower hereby gives you notice pursuant to Section 2.03
of the Agreement that it requests a Borrowing under the Agreement, and sets
forth below the terms on which such Borrowing is requested to be made:

         (A)      Date of Borrowing (which is a Business Day)   ________________

         (B)      Type of Loan (i.e., ABR Borrowing or
                  Eurodollar Borrowing)                         ________________

         (C)      Facility (i.e., Revolver or Swingline)        ________________

         (D)      Principal amount of Borrowing(4)              ________________

         (E)      Interest Period and the last day thereof(5)   ________________

         (F)      Total outstanding Revolving Loans
                  (including, if applicable, Borrowing
                  requested)                                    $_______________

         (G)      Total outstanding Swingline Loans
                  (including, if applicable, Borrowing
                  requested)                                    $_______________

(4) Not less than $1,000,000 (and in integral multiples of $100,000) with
respect to Revolving Loans. Not less than $100,000 (and in integral multiples of
$100,000) with respect to Swingline Loans.

(5) Which shall be subject to the definition of "Interest Period" and end not
later than the Maturity Date.

SCHEDULE 6.08, Solo Page

<PAGE>

                                                                ________________

         (H)      Total LC Exposure                             $_______________

         (I)      Total Revolving Exposure (sum of (F),
                  (G) and (H))                                  $_______________

         (J)      Total Commitments                             $_______________

         (K)      Availability ((J) - (I))                      $_______________

         2.       The Borrower instructs you to disburse the proceeds of the
requested Borrowing into the following account:

                  Account Name:
                  Bank Name:
                  ABA Routing No.:
                  Bank Account No.:
                  Ref.:

         The Borrower represents and warrants that the conditions to lending
specified in Section 4.02(a) and (b) of the Agreement have been satisfied and
that after giving effect to the Borrowing requested hereby, the total Revolving
Credit Exposures of all Lenders shall not exceed the total Commitment.

                                        Very truly yours,

                                        CENTEX CONSTRUCTION PRODUCTS, INC.

                                        By: ____________________________________
                                            Name:  _____________________________
                                            Title: _____________________________

SCHEDULE 6.08, Solo Page

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