Document:

Exhibit 10.9

                             INTERCREDITOR AGREEMENT

                                     INTERCREDITOR AGREEMENT, dated as of
                             October 15, 2003, among PNC BANK, NATIONAL
                             ASSOCIATION, as Credit Agent, JPMorgan Chase
                             bank, as Trustee, KOPPERS INC. and each
                             SUBSIDIARY GUARANTOR listed on Schedule I
                             hereto.

                              W I T N E S S E T H :

     WHEREAS, the Company (such term and each other capitalized term used herein
having the meanings set forth in Section 1 below), certain of its Subsidiaries,
certain lenders, PNC Bank, National Association, as administrative agent,
National City Bank of Pennsylvania, as syndication agent, and Citizens Bank of
Pennsylvania, Fleet National Bank and Wachovia Bank, National Association, as
co-documentation agents, are parties to the Credit Agreement dated as of May 12,
2003 (as further amended, supplemented or otherwise modified from time to time,
the "Credit Agreement");

     WHEREAS, the Obligations of the Company under the Credit Agreement are
secured by various assets of the Company and certain Subsidiaries thereof;

     WHEREAS, the Company, certain Subsidiaries of the Company and the Trustee
have entered into the Indenture dated as of October 15, 2003 (as amended,
supplemented or otherwise modified from time to time, the "Indenture"), pursuant
to which the Notes shall be governed;

     WHEREAS, the Company and certain lenders under the Credit Agreement have
entered into a First Amendment to the Credit Agreement, dated as of October 15,
2003 (the "Amendment"), that, among other things, permits, subject to certain
terms and conditions, (a) the issuance of up to $320.0 million in aggregate
principal amount of the Notes by the Company, (b) the payment of up to $80.0
million in dividends to the Company's stockholders and (c) a second-priority
Lien (subject to the Lien in favor of the Credit Agent) on the Noteholder
Collateral to secure the Noteholder Claims; and

     WHEREAS, it is a condition precedent to the effectiveness of the Amendment
that the parties hereto enter into this Agreement;

     Now, THEREFORE, in consideration of the foregoing, the mutual covenants and
obligations herein set forth and for other good and valuable consideration, the
sufficiency and receipt of which are hereby acknowledged, the parties hereto,
intending to be legally bound, hereby agree as follows:

     Section 1. (a) Definitions. As used in this Agreement, the following terms
have the meanings specified below:

<PAGE>

     "Agreement" means this Agreement, as amended, renewed, extended,
supplemented or otherwise modified from time to time in accordance with the
terms hereof.

     "Amendment" has the meaning set forth in the recitals hereto.

     "Bankruptcy Law" means Title 11 of the United States Code and any similar
Federal, state or foreign law for the relief of debtors.

     "Business Day" means any day other than a Saturday, a Sunday or a day that
is a legal holiday under the laws of the State of New York or on which banking
institutions in the State of New York or the Commonwealth of Pennsylvania are
required or authorized by law or other governmental action to close.

     "Cash Management Obligations" means, with respect to any Person, all
obligations of such Person in respect of overdrafts and related liabilities owed
to any other Person that arise from treasury, depositary or cash management
services, including any automated clearing house transfers of funds or any
similar transactions.

     "Common Collateral" means all of the assets of any Grantor, whether real,
personal or mixed, constituting both Senior Lender Collateral and Noteholder
Collateral.

     "Company" means Koppers Inc., a Pennsylvania corporation, and its
successors.

     "Comparable Noteholder Collateral Document" means, in relation to any
Common Collateral subject to any Lien created under any Senior Collateral
Document, that Noteholder Collateral Document that creates a Lien on the same
Common Collateral, granted by the same Grantor.

     "Credit Agent" means PNC Bank, National Association, in its capacity as
administrative agent under the Credit Agreement, and its successors as
collateral agent for the Senior Lenders (or if there is more than one such
successor agent, such agent as is designated as "Credit Agent" by Senior Lenders
holding a majority of the Senior Lender Claims then outstanding) under the
Senior Credit Agreement exercising substantially the same rights and powers.

     "Credit Agreement" has the meaning set forth in the recitals hereto.

     "Deposit Account" has the meaning set forth in the Uniform Commercial Code.

     "Deposit Account Collateral" means that part of the Common Collateral
comprised of Deposit Accounts.

     "DIP Financing" has the meaning set forth in Section 6.1.

     "Discharge of Senior Lender Claims" means, except to the extent otherwise
provided in Section 5.6, payment in full in cash of (a) all Obligations in
respect of all outstanding First-Lien Indebtedness or, with respect to letters
of credit outstanding thereunder, delivery of cash collateral or backstop
letters of credit in respect thereof in compliance with such First-Lien
Indebtedness, as applicable, in each case after or concurrently with termination
of all commit-

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<PAGE>

ments to extend credit thereunder and (b) any other Senior Lender Claims that
are due and payable or otherwise accrued and owing at or prior to the time such
principal and interest are paid.

     "First-Lien Indebtedness" means (a) Indebtedness incurred pursuant to the
Credit Agreement, and all renewals, extensions and refinancings thereof, (i) in
an aggregate amount not to exceed the greater of (A) $130.0 million and (B) the
sum of (x) 60% of the book value of the inventory of the Company and its
Restricted Subsidiaries (as defined in the Indenture) and (y) 80% of the book
value of the accounts receivable of the Company and its Restricted Subsidiaries
(the book value of the inventory and accounts receivable to be calculated at the
time such Indebtedness is incurred), plus in the case of the clauses (A) and (B)
$20.0 million (provided, however, that such $20.0 million of Indebtedness or any
portion thereof is issued to and held by the same lender or group of lenders
providing the balance of the then outstanding Indebtedness under the Credit
Agreement or any renewal, extension or refinancing of the Credit Agreement) and
(ii) secured by a Permitted Lien (as defined in the Indenture) described in
clause (7) of the definition thereof and (b) all other Obligations (not
constituting Indebtedness) of any Grantor under any Indebtedness referred to in
clause (a), including in respect of Senior Lender Hedging Obligations and Senior
Lender Cash Management Obligations.

     "Future First-Lien Indebtedness" means any First-Lien Indebtedness other
than Indebtedness incurred pursuant to the Credit Agreement.

     "Grantors" means the Company and each of the Subsidiaries that has executed
and delivered a Noteholder Collateral Document or a Senior Collateral Document.

     "Hedging Obligations" means, with respect to any Person, all obligations
and liabilities of such Person in respect of (a) interest rate or currency swap
agreements, interest rate or currency cap agreements, interest rate or currency
collar agreements or (b) other agreements or arrangements designed to protect
such Person against fluctuations in interest rates and/or currency exchange
rates.

     "Indebtedness" means and includes all obligations that constitute
"Indebtedness" within the meaning of the Indenture or the Senior Credit
Agreement.

     "Indenture" has the meaning set forth in the recitals hereto.

     "Insolvency or Liquidation Proceeding" means (a) any voluntary or
involuntary case or proceeding under any Bankruptcy Law with respect to any
Grantor, (b) any other voluntary or involuntary insolvency, reorganization or
bankruptcy case or proceeding, or any receivership, liquidation, reorganization
or other similar case or proceeding with respect to any Grantor or with respect
to any of their respective assets, (c) any liquidation, dissolution,
reorganization or winding up of any Grantor whether voluntary or involuntary and
whether or not involving insolvency or bankruptcy or (d) any assignment for the
benefit of creditors or any other marshalling of assets and liabilities of any
Grantor.

     "Lien" means, with respect to any asset, any mortgage, deed of trust, lien,
pledge, hypothecation, encumbrance, charge or security interest in, on or of
such asset.

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<PAGE>

     "Noteholder Australian Security Agreements" means each Security Agreement,
dated as of October 15, 2003, among Koppers Australia Holding Company Pty Ltd,
Koppers Australia Pty Ltd, Koppers Carbon Materials & Chemicals Pty Ltd, Koppers
Wood Products Pty Ltd, Koppers Shipping Pty Ltd, Continental Carbon Australia
Pty Ltd and Koppers Investment Subsidiary Pty Ltd, in favor of the Trustee.

     "Noteholder Canadian Security Documents" means the Deed of Hypothec, dated
as of October 15, 2003, between the Company and the Trustee.

     "Noteholder Claims" means all Obligations in respect of the Notes or
arising under the Noteholder Documents or any of them, including all fees and
expenses of the Trustee thereunder.

     "Noteholder Collateral" means all of the assets of any Grantor, whether
real, personal or mixed, with respect to which a Lien is granted as security for
any Noteholder Claim.

     "Noteholder Collateral Documents" means the Noteholder Australian Security
Agreements, the Noteholder Canadian Security Documents, the Noteholder Patent,
Trademark and Copyright Security Agreement, the Noteholder Pledge Agreements,
the Noteholder Security Agreement, the Noteholder Security Trust Deed and any
other document or instrument pursuant to which a Lien is granted by any Grantor
to secure any Noteholder Claims or under which rights or remedies with respect
to any such Lien are governed.

     "Noteholder Documents" means (a) the Indenture, the Notes, the Noteholder
Collateral Documents and (b) any other related document or instrument executed
and delivered pursuant to any Noteholder Document described in clause (a) above
evidencing or governing any Obligations thereunder.

     "Noteholder Patent, Trademark and Copyright Security Agreement" means the
Patent, Trademark and Copyright Security Agreement, dated as of October 15,
2003, among the Company, the other domestic Grantors and the Trustee.

     "Noteholder Pledge Agreements" means (a) the Pledge Agreement, dated as of
October 15, 2003, among the Company, certain other domestic Grantors and the
Trustee and (b) the Pledge Agreement, dated as of October 15, 2003, between
World-Wide Ventures Corporation and the Trustee.

     "Noteholder Security Agreement" means the Security Agreement, dated as of
October 15, 2003, among the Company, the other domestic Grantors and the
Trustee.

     "Noteholder Security Trust Deed" means the Security Trust Deed, dated as of
October 15, 2003, among Koppers Australia Holding Company Pty Ltd, Koppers
Australia Pty Ltd, Koppers Carbon Materials & Chemicals Pty Ltd, Koppers Wood
Products Pty Ltd, Koppers Shipping Pty Ltd, Continental Carbon Australia Pty
Ltd, Koppers Investment Subsidiary Pty Ltd and the Trustee.

     "Noteholders" means the Persons holding Noteholder Claims.

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<PAGE>

     "Notes" means (a) the initial $320.0 million in principal amount of 9-7/8%
Senior Secured Notes Due 2013 to be issued by the Company pursuant to the
Indenture, (b) the exchange notes issued in exchange therefor as contemplated by
the Registration Rights Agreement dated as of September 30, 2003, among the
Company, certain Subsidiaries of the Company and the Initial Purchasers (as
defined therein) and (c) any additional notes issued under the Indenture by the
Company, to the extent permitted by the Indenture.

     "Obligations" means, with respect to any Indebtedness, any and all
obligations with respect to the payment of (a) any principal of or interest
(including interest accruing on or after the commencement of any Insolvency or
Liquidation Proceeding, whether or not a claim for post-filing interest is
allowed in such proceeding) or premium on any Indebtedness, including any
reimbursement obligation in respect of any letter of credit, (b) any fees,
indemnification obligations, expense reimbursement obligations or other
liabilities payable under the documentation governing such Indebtedness, (c) any
obligation to post cash collateral in respect of letters of credit and any other
obligations and/or (d) any Cash Management Obligations or Hedging Obligations in
connection with such Indebtedness.

     "Person" means any natural person, corporation, limited liability company,
trust, joint venture, association, company, partnership, entity or other party,
including any government and any political subdivision, agency or
instrumentality thereof.

     "Pledged Collateral" means (a) the Common Collateral in the possession of
the Credit Agent (or its agents or bailees), to the extent that possession
thereof is necessary to perfect a Lien thereon under the Uniform Commercial Code
and (b) the "Pledged Collateral" under, and as defined in, the Noteholder Pledge
Agreements that is Common Collateral.

     "Proceeds" has the meaning set forth in Section 4.1.

     "Recovery" has the meaning set forth in Section 6.4.

     "Required Lenders" means, with respect to any Senior Credit Agreement,
those Senior Lenders the approval of which is required to approve an amendment
or modification of, termination or waiver of any provision of or consent or
departure from the Senior Credit Agreement (or would be required to effect such
consent under this Agreement if such consent were treated as an amendment of the
Senior Credit Agreement).

     "Senior Collateral Documents" means the Patent, Trademark and Copyright
Security Agreement, the Pledge Agreement, the Security Agreements, the Security
Trust Deed and the Quebec Security (each as defined in the Credit Agreement) and
any other agreement, document or instrument pursuant to which a Lien is granted
securing any Senior Lender Claims or under which rights or remedies with respect
to such Liens are governed.

     "Senior Credit Agreement" means the Credit Agreement and any other
agreement governing Future First-Lien Indebtedness.

     "Senior Lender Cash Management Obligations" means any Cash Management
Obligations secured by any Common Collateral under the Senior Collateral
Documents.

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<PAGE>

     "Senior Lender Claims" means all First-Lien Indebtedness outstanding,
including any Future First-Lien Indebtedness. Senior Lender Claims shall include
all interest and expenses accrued or accruing (or that would, absent the
commencement of an Insolvency or Liquidation Proceeding, accrue) after the
commencement of an Insolvency or Liquidation Proceeding in accordance with and
at the rate specified in the relevant Senior Lender Document whether or not the
claim for such interest or expenses is allowed as a claim in such Insolvency or
Liquidation Proceeding.

     "Senior Lender Collateral" means all of the assets of any Grantor, whether
real, personal or mixed, with respect to which a Lien is granted as security for
any Senior Lender Claim.

     "Senior Lender Documents" means the Senior Credit Agreement, the Senior
Collateral Documents, and each of the other agreements, documents and
instruments (including each agreement, document or instrument providing for or
evidencing a Senior Lender Hedging Obligation or Senior Lender Cash Management
Obligation) providing for or evidencing any other Obligation under the Credit
Agreement or any Future First-Lien Indebtedness and any other related document
or instrument executed or delivered pursuant to any Senior Lender Document at
any time or otherwise evidencing any Indebtedness arising under any Senior
Lender Document.

     "Senior Lender Hedging Obligations" means any Hedging Obligations secured
by any Common Collateral under the Senior Collateral Documents.

     "Senior Lenders" means the Persons holding Senior Lender Claims, including
the Credit Agent.

     "Subsidiary" means any "Subsidiary" of the Company as defined in the
Indenture.

     "Trustee" means JPMorgan Chase Bank, in its capacity as trustee under the
Indenture and collateral agent under the Noteholder Collateral Documents, and
its permitted successors and assigns.

     "Uniform Commercial Code" or "UCC" means the Uniform Commercial Code as
from time to time in effect in the State of New York.

     (b) 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 in accordance with this Agreement, (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 Sections shall be construed to refer to Sections of this Agreement and (e)
the words "asset" and "property" shall be construed to

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<PAGE>

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.

     Section 2. Lien Priorities.

     2.1 Subordination. Notwithstanding the date, time, manner or order of
filing or recordation of any document or instrument or grant, attachment or
perfection of any Liens granted to the Trustee or the Noteholders on the Common
Collateral or of any Liens granted to the Credit Agent or the Senior Lenders on
the Common Collateral and notwithstanding any provision of the UCC, or any
applicable law or the Noteholder Documents or the Senior Lender Documents or any
other circumstance whatsoever, the Trustee, on behalf of itself and the
Noteholders, hereby agrees that: (a) any Lien on the Common Collateral securing
any Senior Lender Claims now or hereafter held by or on behalf of the Credit
Agent or any Senior Lenders or any agent or trustee therefor regardless of how
acquired, whether by grant, statute, operation of law, subrogation or otherwise,
shall have priority over and be senior in all respects and prior to any Lien on
the Common Collateral securing any of the Noteholder Claims and (b) any Lien on
the Common Collateral securing any Noteholder Claims now or hereafter held by or
on behalf of the Trustee or any Noteholders or any agent or trustee therefor
regardless of how acquired, whether by grant, statute, operation of law,
subrogation or otherwise, shall be junior and subordinate in all respects to all
Liens on the Common Collateral securing any Senior Lender Claims. All Liens on
the Common Collateral securing any Senior Lender Claims shall be and remain
senior in all respects and prior to all Liens on the Common Collateral securing
any Noteholder Claims for all purposes, whether or not such Liens securing any
Senior Lender Claims are subordinated to any Lien securing any other obligation
of the Company, any other Grantor or any other Person.

     2.2 Prohibition on Contesting Liens. Each of the Trustee, for itself and on
behalf of each Noteholder, and the Credit Agent, for itself and on behalf of
each Senior Lender, agrees that it shall not (and hereby waives any right to)
contest or support any other Person in contesting, in any proceeding (including
any Insolvency or Liquidation Proceeding), the priority, validity or
enforceability of (a) a Lien securing any Senior Lender Claims held by or on
behalf of any of the Senior Lenders in the Common Collateral or (b) a Lien
securing any Noteholder Claims held by or on behalf of any of the Noteholders in
the Common Collateral, as the case may be; provided that nothing in this
Agreement shall be construed to prevent or impair the rights of the Credit Agent
or any Senior Lender to enforce this Agreement, including the priority of the
Liens securing the Senior Lender Claims as provided in Section 2.1.

     2.3 No New Liens. Subject to Section 11.03 of the Indenture, so long as the
Discharge of Senior Lender Claims has not occurred, the parties hereto agree
that, after the date hereof, if the Trustee shall hold any Lien on any assets of
the Company or any other Grantor securing any Noteholder Claims that are not
also subject to the first-priority Lien in respect of the Senior Lender Claims
under the Senior Lender Documents, the Trustee, upon demand by the Credit Agent
or the Company, will assign such Lien to the Credit Agent as security for the
Senior Lender Claims (in which case the Trustee may retain a junior lien on such
assets subject to the terms hereof).

     2.4 Perfection of Liens. Neither the Credit Agent nor the Senior Lenders
shall be responsible for perfecting and maintaining the perfection of Liens with
respect to the Com-

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<PAGE>

mon Collateral for the benefit of the Trustee and the Noteholders. The
provisions of this Intercreditor Agreement are intended solely to govern the
respective Lien priorities as between the respective Senior Lenders and the
Noteholders and shall not impose on the Credit Agent, the Trustee, the
Noteholders or the Senior Lenders any obligations in respect of the disposition
of Proceeds of any Common Collateral which would conflict with prior perfected
claims therein in favor of any other Person or any order or decree of any court
or governmental authority or any applicable law. Each of the Credit Agent, for
itself and on behalf of the Senior Lenders and the Trustee, for itself and on
behalf of the Noteholders, agrees that it will not contest the validity,
perfection, priority or enforceability of the Liens upon the Common Collateral
of the Credit Agent, the Trustee, the Noteholders or the Senior Lenders.

     Section 3. Enforcement.

     3.1 Exercise of Remedies.

     (a) So long as the Discharge of Senior Lender Claims has not occurred,
whether or not any Insolvency or Liquidation Proceeding has been commenced by or
against the Company or any other Grantor, (i) the Trustee and the Noteholders
will not exercise or seek to exercise any rights or remedies (including set-off)
with respect to any Common Collateral in respect of any Noteholder Claims,
institute any action or proceeding with respect to such rights or remedies
(including any action of foreclosure), contest, protest or object to any
foreclosure proceeding or action brought with respect to the Common Collateral
by the Credit Agent or any Senior Lender in respect of Senior Lender Claims, the
exercise of any right under any lockbox agreement, control agreement, landlord
waiver or bailee's letter or similar agreement or arrangement to which the
Trustee or any Noteholder is a party, or any other exercise by any such party,
of any rights and remedies relating to the Common Collateral under the Senior
Lender Documents or otherwise in respect of Senior Lender Claims, or object to
the forbearance by the Senior Lenders from bringing or pursuing any foreclosure
proceeding or action or any other exercise of any rights or remedies relating to
the Common Collateral in respect of Senior Lender Claims and (ii) the Credit
Agent and the Senior Lenders shall have the exclusive right to enforce rights,
exercise remedies (including set-off and the right to credit bid their debt) and
make determinations regarding the release, disposition, or restrictions with
respect to the Common Collateral without any consultation with or the consent of
the Trustee or any Noteholder; and, should the Credit Agent and the Senior
Lenders decide to foreclose on any of the Common Collateral as part of its
enforcement of the Senior Lenders Claims under the Senior Collateral Documents,
(A) the Noteholders and the Trustee shall not contest such foreclosure and shall
release any and all claims in respect of such Common Collateral (except for the
right to receive the balance of Proceeds after Discharge of Senior Lender Claims
as described in Section 4.1) so that it may be sold free and clear of the Liens
of the Noteholders and of the Trustee, on behalf of the Noteholders, and the
Trustee, for itself and on behalf of any such Noteholder, shall, within five (5)
business days of written request by the Credit Agent, execute and deliver to the
Credit Agent such termination statements, releases and other documents as the
Credit Agent may request to effectively confirm such release and (B) the
Trustee, for itself and on behalf of the Noteholders, hereby irrevocably
constitutes and appoints the Credit Agent and any officer or agent of the Credit
Agent, with full power of substitution, as its true and lawful attorney-in-fact
with full irrevocable power and authority in the place and stead of the Trustee
or such holder or in the Credit Agent's own name, from time to time in the
Credit Agent's discretion, for the purpose of carrying out the

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<PAGE>

terms of this Section 3.1(a), to take any and all appropriate action and to
execute any and all documents and instruments that may be necessary to
accomplish the purposes of this Section 3.1(a), including any termination
statements, endorsements or other instruments of transfer or release provided,
that (A) in any Insolvency or Liquidation Proceeding commenced by or against the
Company or any other Grantor, the Trustee may file a claim or statement of
interest with respect to the Noteholder Claims and (B) the Trustee may take any
action (not adverse to the prior Liens on the Common Collateral securing the
Senior Lender Claims, or the rights of the Credit Agent or the Senior Lenders to
exercise remedies in respect thereof) in order to preserve or protect its Lien
on the Common Collateral. In exercising rights and remedies with respect to the
Common Collateral, the Credit Agent and the Senior Lenders may enforce the
provisions of the Senior Lender Documents and exercise remedies thereunder, all
in such order and in such manner as they may determine in the exercise of their
sole discretion. Such exercise and enforcement shall include the rights of an
agent appointed by them to sell or otherwise dispose of Common Collateral upon
foreclosure, to cause the Grantors to deliver a transfer document in lieu of
foreclosure to the Senior Lenders or any nominee of the Senior Lenders, to incur
expenses in connection with such sale or disposition, and to exercise all the
rights and remedies of a secured lender under the Uniform Commercial Code of any
applicable jurisdiction and of a secured creditor under Bankruptcy Laws of any
applicable jurisdiction.

     (b) The Trustee, on behalf of itself and the Noteholders, agrees that,
after an event of default under the First Lien Indebtedness has occurred with
respect to which the Credit Agent has provided written notice to the Trustee,
and until such event of default is cured or waived, it will not take or receive
any Common Collateral or any Proceeds of Common Collateral in respect of
Noteholder Claims, unless and until the Discharge of Senior Lender Claims has
occurred. Without limiting the generality of the foregoing, unless and until the
Discharge of Senior Lender Claims has occurred, except as expressly provided in
the proviso in clause (ii) of Section 3.1(a), the sole right of the Trustee and
the Noteholders with respect to the Common Collateral is to hold a Lien on the
Common Collateral in respect of Noteholder Claims pursuant to the Noteholder
Documents for the period and to the extent granted therein and to receive a
share of the Proceeds thereof, if any, after the Discharge of the Senior Lender
Claims has occurred.

     (c) Subject to the proviso in clause (ii) of Section 3.1(a), (i) the
Trustee, for itself and on behalf of the Noteholders, agrees that the Trustee
and the Noteholders will not take any action that would hinder any exercise of
remedies undertaken by the Credit Agent or the Senior Lenders with respect to
the Common Collateral under the Senior Loan Documents, including any sale,
lease, exchange, transfer or other disposition of the Common Collateral, whether
by foreclosure or otherwise, and (ii) the Trustee, for itself and on behalf of
the Noteholders, hereby waives any and all rights it or the Noteholders may have
as a junior lien creditor or otherwise to object to the manner in which the
Credit Agent or the Senior Lenders seek to enforce or collect the Senior Lender
Claims or the Liens granted in any of the Common Collateral in respect of Senior
Lender Claims, regardless of whether any action or failure to act by or on
behalf of the Credit Agent or Senior Lenders is adverse to the interest of the
Noteholders. The Trustee, for itself and on behalf of the Noteholders, waives
the right to commence any legal action or assert in any legal action or in any
Insolvency or Liquidation Proceeding any claim against the Senior Lenders
seeking damages from the Senior Lenders or other relief, by way of

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<PAGE>

specific performance, injunction or otherwise, with respect to any action taken
or omitted by the Senior Lenders in accordance with this Agreement.

     (d) The Trustee hereby acknowledges and agrees that no covenant, agreement
or restriction contained in any Noteholder Document shall be deemed to restrict
in any way the rights and remedies of the Credit Agent or the Senior Lenders
with respect to the Common Collateral as set forth in this Agreement and the
Senior Lender Documents.

     3.2 Cooperation. Subject to the proviso in clause (ii) of Section 3.1(a),
the Trustee, on behalf of itself and the Noteholders, agrees that, unless and
until the Discharge of Senior Lender Claims has occurred, it will not commence,
or join with any Person (other than the Senior Lenders and the Credit Agent upon
the written request thereof) in commencing, any enforcement, collection,
execution, levy or foreclosure action or proceeding with respect to any Lien
held by it in the Common Collateral under any of the Noteholder Documents or
otherwise in respect of the Noteholder Claims. Section 4. Payments.

     4.1 Application of Proceeds. Subject to Section 5.4, after an event of
default under the First Lien Indebtedness has occurred with respect to which the
Credit Agent has provided written notice to the Trustee, and until such event of
default is cured or waived, so long as the Discharge of Senior Lender Claims has
not occurred, and whether prior to or after the commencement of any Insolvency
or Liquidation Proceeding, all Common Collateral and all proceeds thereof (a)
received from the sale, lease, license, exchange or other disposition of Common
Collateral, whether such sale, lease, license or other disposition is made by or
on behalf of a Grantor, the Credit Agent, the Trustee or any other person, (b)
collected on or distributed on account of, Common Collateral, (c) consisting of
rights arising out of the loss, nonconformity, or interference with the use of,
defects or infringements of rights in, or damage to, the Common Collateral, (d)
consisting of rights arising out of the Common Collateral, or (e) to the extent
of the value of the Common Collateral, and to the extent payable to the debtor
or the secured party, insurance payable by reason of the loss or nonconformity
of, defects or infringement of rights in, or damage to, the Common Collateral
(collectively, "Proceeds") shall be applied FIRST to the Senior Lender Claims in
such order as specified in the relevant Senior Lender Documents until the
Discharge of Senior Lender Claims has occurred and SECOND, to the Noteholder
Claims. Upon the Discharge of the Senior Lender Claims, the Credit Agent shall
at the expense of the Company deliver promptly to the Trustee any Proceeds of
Common Collateral held by it in the same form as received, with any necessary
endorsements or as a court of competent jurisdiction may otherwise direct to be
applied by the Trustee to the Noteholder Claims in such order as specified in
the relevant Noteholder Documents.

     4.2 Payments Over. Any Common Collateral or Proceeds thereof received by
the Trustee or any Noteholder in connection with the exercise of any right or
remedy (including set-off) relating to the Common Collateral in contravention of
this Agreement shall be segregated and held in trust and forthwith paid over to
the Credit Agent for the benefit of the Senior Lenders in the same form as
received, with any necessary endorsements or as a court of competent
jurisdiction may otherwise direct. The Credit Agent is hereby authorized to make
any such

                                      -10-
<PAGE>

endorsements as agent for the Trustee or any such Noteholder. This authorization
is coupled with an interest and is irrevocable.

     Section 5. Other Agreements.

     5.1 Releases.

     (a) In the event of any release of the Liens on Common Collateral in
respect of Noteholder Claims in accordance with the Indenture, the Trustee, for
itself and on behalf of the Noteholders, promptly shall execute and deliver to
the Credit Agent or the applicable Grantor such termination statements, releases
and other documents as the Credit Agent or such Grantor may reasonably request
to effectively confirm such release.

     (b) The Trustee, for itself and on behalf of the Noteholders, hereby
irrevocably constitutes and appoints the Credit Agent and any officer or agent
of the Credit Agent, with full power of substitution, as its true and lawful
attorney-in-fact with full irrevocable power and authority in the place and
stead of the Trustee or such holder or in the Credit Agent's own name, from time
to time in the Credit Agent's discretion, for the purpose of carrying out the
terms of this Section 5.1, to take any and all appropriate action and to execute
any and all documents and instruments that may be necessary or desirable to
accomplish the purposes of this Section 5.1, including any termination
statements, endorsements or other instruments of transfer or release.

     (c) Unless and until the Discharge of Senior Lender Claims has occurred,
the Trustee, for itself and on behalf of the Noteholders, hereby consents to the
application, whether prior to or after default, of Deposit Account Collateral or
Proceeds of Common Collateral to the repayment of Senior Lender Claims pursuant
to the Senior Credit Agreement; provided that nothing in this Section 5.1(c)
shall be construed to prevent or impair the rights of the Trustee or the
Noteholders to receive Proceeds in connection with the Noteholder Claims not
otherwise in contravention of this agreement.

     5.2 Insurance. Unless and until the Discharge of Senior Lender Claims has
occurred, the Credit Agent and the Senior Lenders shall have the sole and
exclusive right, subject to the rights of the Grantors under the Senior Lender
Documents, to adjust settlement for any insurance policy covering the Common
Collateral in the event of any loss thereunder and to approve any award granted
in any condemnation or similar proceeding affecting the Common Collateral.
Unless and until the Discharge of Senior Lender Claims has occurred, all
proceeds of any such policy and any such award if in respect of the Common
Collateral shall be paid to the Credit Agent for the benefit of the Senior
Lenders to the extent required under the Senior Lender Documents in respect of
the Senior Lender Claims and thereafter to the Trustee for the benefit of the
Noteholders to the extent required under the applicable Noteholder Documents and
then to the owner of the subject property or as a court of competent
jurisdiction may otherwise direct. Subject to Section 5.4, if the Trustee or any
Noteholder shall, at any time, receive any proceeds of any such insurance policy
or any such award in contravention of this Agreement, it shall pay such proceeds
over to the Credit Agent in accordance with the terms of Section 4.2.

                                      -11-
<PAGE>

     5.3 Amendments to Noteholder Collateral Documents.

     (a) Without the prior written consent of the Credit Agent and the Required
Lenders, no Noteholder Collateral Document may be amended, supplemented or
otherwise modified or entered into to the extent such amendment, supplement or
modification, or the terms of any new Noteholder Collateral Document, would be
prohibited by or inconsistent with any of the terms of this Agreement. The
Trustee agrees that each Noteholder Collateral Document shall include the
following language (or language to similar effect approved by the Credit Agent):

         "Notwithstanding anything herein to the contrary, the lien and security
         interest granted to the Trustee pursuant to this Agreement and the
         exercise of any right or remedy by the Trustee hereunder are subject to
         the provisions of the Intercreditor Agreement, dated as of October 15,
         2003 (as amended, supplemented or otherwise modified from time to time,
         the "Intercreditor Agreement"), among Koppers Inc., the subsidiaries of
         Koppers Inc. party thereto, PNC Bank, National Association, as Credit
         Agent, and JPMorgan Chase Bank, as Trustee. In the event of any
         conflict between the terms of the Intercreditor Agreement and this
         Agreement, the terms of the Intercreditor Agreement shall govern."

     (b) In the event that the Credit Agent or the Senior Lenders enter into any
amendment, waiver or consent in respect of any of the Senior Collateral
Documents for the purpose of adding to, or deleting from, or waiving or
consenting to any departures from any provisions of, any Senior Collateral
Document or changing in any manner the rights of the Credit Agent, the Senior
Lenders, the Company or any other Grantor thereunder, then such amendment,
waiver or consent shall apply automatically to any comparable provision of the
Comparable Noteholder Collateral Document without the consent of the Trustee or
the Noteholders and without any action by the Trustee, the Company or any other
Grantor; provided, that (A) if any such amendment, waiver or consent could
reasonably be expected to be adverse to the Noteholders or the interest of the
Noteholders in the Noteholder Collateral, such amendment, waiver or consent
shall not apply to any Noteholder Collateral Document unless, at the time of
such amendment, waiver or consent, First-Lien Indebtedness (including
commitments in respect thereof to the extent that such commitments are subject
only to reasonable and customary funding conditions and are then available to be
funded at the election of the Company) of no less than $30.0 million secured by
the first-priority Liens on the Common Collateral is then outstanding and (B)
written notice of such amendment, waiver or consent shall have been promptly
given to the Trustee. Notwithstanding the foregoing, no such amendment, waiver
or consent shall (1) have the effect of releasing assets subject to the Lien of
the Noteholder Collateral Documents, except to the extent that a release of such
Lien is permitted by Section 11.03 of the Indenture, (2) be construed as a
waiver of any Default or Event of Default (as such terms are defined in the
Indenture) or (3) except as permitted by the Indenture, subordinate the Lien
granted to the Trustee and the Noteholders to any other Lien.

     5.4 Rights As Unsecured Creditors. Notwithstanding anything to the contrary
in this Agreement, the Trustee and the Noteholders may exercise rights and
remedies as an unsecured creditor against the Company or any Subsidiary that has
guaranteed the Noteholder Claims in accordance with the terms of the Noteholder
Documents and applicable law. Nothing in this Agreement shall prohibit the
receipt by the Trustee or any Noteholders of the required

                                      -12-
<PAGE>

payments of interest and principal so long as such receipt is not the direct or
indirect result of the exercise by the Trustee or any Noteholder of rights or
remedies as a secured creditor in respect of Common Collateral or enforcement in
contravention of this Agreement of any Lien in respect of Noteholder Claims held
by any of them and such payments do not come from Proceeds of Common Collateral
after an event of default under the First Lien Indebtedness has occurred with
respect to which the Trustee has received written notice prior to the Trustee's
receipt of such payments, and until such event of default is cured or waived or
until the Discharge of Senior Lender Claims. In the event the Trustee or any
Noteholder becomes a judgment lien creditor in respect of Common Collateral as a
result of its enforcement of its rights as an unsecured creditor in respect of
Noteholder Claims, such judgment lien shall be subordinated to the Liens
securing Senior Lender Claims on the same basis as the other Liens securing the
Noteholder Claims are so subordinated to such Liens securing Senior Lender
Claims under this Agreement. Nothing in this Agreement impairs or otherwise
adversely affects any rights or remedies the Credit Agent or the Senior Lenders
may have with respect to the Senior Lender Collateral.

     5.5 Bailee for Perfection.

     (a) The Credit Agent agrees to hold the Pledged Collateral that is part of
the Common Collateral in its possession or control (or in the possession or
control of its agents or bailees) as bailee for the Trustee and any assignee
solely for the purpose of perfecting the security interest granted in such
Pledged Collateral pursuant to the Noteholder Security Agreement, subject to the
terms and conditions of this Section 5.5.

     (b) The Credit Agent agrees to hold the Deposit Account Collateral that is
part of the Common Collateral and controlled by the Credit Agent for the Trustee
and any assignee solely for the purpose of perfecting the security interest
granted in such Deposit Account Collateral pursuant to the Noteholder Security
Agreement, subject to the terms and conditions of this Section 5.5.

     (c) Except as otherwise specifically provided herein (including, without
limitation, Sections 3.1 and 4.1), until the Discharge of Senior Lender Claims
has occurred, the Credit Agent shall be entitled to deal with the Pledged
Collateral in accordance with the terms of the Senior Lender Documents as if the
Liens under the Noteholder Collateral Documents did not exist. The rights of the
Trustee and the Noteholders with respect to such Pledged Collateral shall at all
times be subject to the terms of this Agreement.

     (d) The Credit Agent shall have no obligation whatsoever to the Trustee or
any Noteholder to assure that the Pledged Collateral is genuine or owned by any
of the Grantors or to protect or preserve rights or benefits of any Person or
any rights pertaining to the Common Collateral except as expressly set forth in
this Section 5.5. The duties or responsibilities of the Credit Agent under this
Section 5.5 shall be limited solely to holding the Pledged Collateral as bailee
for the Trustee for purposes of perfecting the Lien held by the Trustee.

     (e) The Credit Agent shall not have by reason of the Noteholder Collateral
Documents or this Agreement or any other document a fiduciary relationship in
respect of the Trustee or any Noteholder and the Trustee and the Noteholders
hereby waive and release the

                                      -13-
<PAGE>

Credit Agent from all claims and liabilities arising pursuant to the Credit
Agent's role under this Section 5.5, as agent and bailee with respect to the
Common Collateral.

     (f) Upon the Discharge of Senior Lender Claims, the Credit Agent shall
deliver to the Trustee, to the extent that it is legally permitted to do so, the
remaining Pledged Collateral (if any) and the Deposit Account Collateral (if
any) together with any necessary endorsements (or otherwise allow the Trustee to
obtain control of such Pledged Collateral and Deposit Account Collateral) or as
a court of competent jurisdiction may otherwise direct. The Company shall take
such further action as is required to effectuate the transfer contemplated
hereto and shall indemnify the Credit Agent for loss or damage suffered by the
Credit Agent as a result of such transfer except for loss or damage suffered by
the Credit Agent as a result of its own wilful misconduct or bad faith. The
Credit Agent has no obligation to follow instructions from the Trustee in
contravention of this Agreement.

     (g) Neither the Credit Agent nor the Senior Lenders shall be required to
marshal any present or future collateral security for the Company's or its
Subsidiaries' obligations to the Credit Agent or the Senior Lenders under the
Senior Credit Agreement or the Senior Collateral Documents or to resort to such
collateral security or other assurances of payment in any particular order, and
all of their rights in respect of such collateral security shall be cumulative
and in addition to all other rights, however existing or arising.

     5.6 When Discharge of Senior Lender Claims Deemed to Not Have Occurred. If
at any time after the Discharge of Senior Lender Claims has occurred the Company
incurs and designates any Future First-Lien Indebtedness, then such Discharge of
Senior Lender Claims shall automatically be deemed not to have occurred for all
purposes of this Agreement (other than with respect to any actions taken prior
to the date of such designation as a result of the occurrence of such first
Discharge of Senior Lender Claims), and the applicable agreement governing such
Future First-Lien Indebtedness shall automatically be treated as the Senior
Credit Agreement for all purposes of this Agreement, including for purposes of
the Lien priorities and rights in respect of Common Collateral set forth herein.
Upon receipt of written notice of such designation (including the identity of
the new Credit Agent), the Trustee shall promptly (i) enter into such documents
and agreements (at the expense of the Company), including amendments or
supplements to this Agreement, as the Company or such new Credit Agent shall
reasonably request in writing in order to provide to the new Credit Agent the
rights of the Credit Agent contemplated hereby and (ii) deliver to the Credit
Agent the Pledged Collateral that is Common Collateral together with any
necessary endorsements (or otherwise allow such Credit Agent to obtain control
of such Pledged Collateral).

     Section 6. Insolvency or Liquidation Proceedings.

     6.1 Financing Issues. If the Company or any other Grantor shall be subject
to any Insolvency or Liquidation Proceeding and the Credit Agent shall desire to
permit the use of cash collateral or to permit the Company or any other Grantor
to obtain financing under Section 363 or Section 364 of Title 11 of the United
States Code or any similar Bankruptcy Law ("DIP Financing"), then the Trustee,
on behalf of itself and the Noteholders, agrees that it will raise no objection
to such use of cash collateral or DIP Financing and will not request adequate
protection or any other relief in connection therewith (except to the extent
permitted by the proviso in

                                      -14-
<PAGE>

clause (ii) of Section 3.1(a) and Section 6.3) and, to the extent the Liens
securing the Senior Lender Claims under the Senior Credit Agreement or, if no
Senior Credit Agreement exists, under the other Senior Lender Documents are
subordinated or pari passu with such DIP Financing, will subordinate its Liens
in the Common Collateral to such DIP Financing (and all Obligations relating
thereto) on the same basis as the other Liens securing the Noteholder Claims are
so subordinated to Liens securing Senior Lender Claims under this Agreement.

     6.2 Relief from the Automatic Stay. Until the Discharge of Senior Lender
Claims has occurred, the Trustee, on behalf of itself and the Noteholders,
agrees that none of them shall seek relief from the automatic stay or any other
stay in any Insolvency or Liquidation Proceeding in respect of the Common
Collateral, without the prior written consent of the Credit Agent and the
Required Lenders.

     6.3 Adequate Protection. The Trustee, on behalf of itself and the
Noteholders, agrees that none of them shall contest (or support any other Person
contesting) (a) any request by the Credit Agent or the Senior Lenders for
adequate protection or (b) any objection by the Credit Agent or the Senior
Lenders to any motion, relief, action or proceeding based on the Credit Agent's
or the Senior Lenders' claiming a lack of adequate protection. Notwithstanding
the foregoing, in any Insolvency or Liquidation Proceeding, (i) if the Senior
Lenders (or any subset thereof) are granted adequate protection in the form of
additional collateral in connection with any DIP Financing or use of cash
collateral under Section 363 or Section 364 of Title 11 of the United States
Code or any similar Bankruptcy Law, then the Trustee, on behalf of itself and
any of the Noteholders, may seek or request adequate protection in the form of a
replacement Lien on such additional collateral, which Lien is subordinated to
the Liens securing the Senior Lender Claims and such DIP Financing (and all
Obligations relating thereto) on the same basis as the other Liens securing the
Noteholder Claims are so subordinated to the Liens securing Senior Lender Claims
under this Agreement and (ii) in the event the Trustee, on behalf of itself and
the Noteholders, seeks or requests adequate protection and such adequate
protection is granted in the form of additional collateral, then the Trustee, on
behalf of itself or any of the Noteholders, agrees that the Credit Agent shall
also be granted a senior Lien on such additional collateral as security for the
Senior Lender Claims and any such DIP Financing and that any Lien on such
additional collateral securing the Noteholder Claims shall be subordinated to
the Liens on such collateral securing the Senior Lender Claims and any such DIP
Financing (and all Obligations relating thereto) and any other Liens granted to
the Senior Lenders as adequate protection on the same basis as the other Liens
securing the Noteholder Claims are so subordinated to such Liens securing Senior
Lender Claims under this Agreement.

     6.4 No Waiver; Voting Restrictions. Subject to Section 5.4, nothing
contained herein shall prohibit or in any way limit the Credit Agent or any
other Senior Lender from objecting in any Insolvency or Liquidation Proceeding
or otherwise to any action taken by the Trustee or any of the Noteholders,
including the seeking by the Trustee or any Noteholder of adequate protection or
the asserting by the Trustee or any Noteholder of any of its rights and remedies
under the Noteholder Documents or otherwise. In any Insolvency or Liquidation
Proceeding, neither the Trustee nor any Noteholder shall vote any Noteholder
Claim for any plan of reorganization of any Grantor unless such plan provides
for treatment of the Senior Lender Claims in a manner that would result in such
Senior Lender Claims having relative lien priority over the Noteholder Claims to
at least the same extent as set forth in this Agreement.

                                      -15-
<PAGE>

     6.5 Preference Issues. If any Senior Lender is required in any Insolvency
or Liquidation Proceeding or otherwise to turn over or otherwise pay to the
estate of the Company or any other Grantor (or any trustee, receiver or similar
person therefor), because the payment of such amount was declared to be
fraudulent or preferential in any respect or for any other reason, any amount (a
"Recovery"), whether received as proceeds of security, enforcement of any right
of set-off or otherwise, then the Senior Lender Claims shall be reinstated to
the extent of such Recovery and deemed to be outstanding as if such payment had
not occurred and the Senior Lenders shall be entitled to a Discharge of Senior
Lender Claims with respect to all such recovered amounts. If this Agreement
shall have been terminated prior to such Recovery, this Agreement shall be
reinstated in full force and effect, and such prior termination shall not
diminish, release, discharge, impair or otherwise affect the obligations of the
parties hereto.

     6.6 Reorganization Securities. If, in any Insolvency or Liquidation
Proceeding, debt obligations of the reorganized debtor secured by Liens upon any
property of the reorganized debtor are distributed, pursuant to a plan of
reorganization or similar dispositive restructuring plan, both on account of
Senior Lender Claims and on account of Noteholder Claims, then, to the extent
the debt obligations distributed on account of the Senior Lender Claims and on
account of the Noteholder Claims are secured by Liens upon the same property,
the provisions of this Agreement will survive the distribution of such debt
obligations pursuant to such plan and will apply with like effect to the Liens
securing such debt obligations.

     6.7 Application. This Agreement shall be applicable prior to or after the
commencement of any Insolvency or Liquidation Proceeding. All references herein
to any Grantor shall apply to any trustee for such Person and such Person as
debtor in possession. The relative rights as to the Collateral and Proceeds
thereof shall continue after the filing thereof on the same basis as prior to
the date of the petition, subject to any court order approving the financing of,
or use of cash collateral by, any Grantor.

     6.8 Expense Claims. Neither the Trustee nor any Noteholder will assert or
enforce, at any time prior to the Discharge of Senior Lender Claims, any claim
under ss.506(c) of the Bankruptcy Law senior to or on a parity with the Liens in
favor of the Credit Agent and the Senior Lenders for costs or expenses of
preserving or disposing of any Common Collateral.

     6.9 Post-Petition Claims. (a) Neither the Trustee nor any Noteholder shall
oppose or seek to challenge any claim by the Credit Agent or any other Senior
Lender for allowance in any Insolvency or Liquidation Proceeding of Senior
Lender Claims consisting of post-petition interest, fees, expenses or
indemnities to the extent of the value of the Lien in favor of the Credit Agent
and the Senior Lenders, without regard to the existence of the Lien of the
Trustee on behalf of the Noteholders on the Common Collateral.

     (b) Neither the Credit Agent nor any other Senior Lender shall oppose or
seek to challenge any claim by the Trustee or any Noteholder for allowance in
any Insolvency or Liquidation Proceeding of Noteholder Claims consisting of
post-petition interest, fees, expenses or indemnities to the extent of the value
of the Lien of the Trustee on behalf of the Noteholders on the Common Collateral
(after taking into account the Liens in favor of the Credit Agent and the Senior
Lenders).

                                      -16-
<PAGE>

     Section 7. Reliance; Waivers; etc.

     7.1 Reliance. The consent by the Senior Lenders to the execution and
delivery of the Noteholder Documents to which the Senior Lenders have consented
and all loans and other extensions of credit made or deemed made on and after
the date hereof by the Senior Lenders to the Company or any Subsidiary shall be
deemed to have been given and made in reliance upon this Agreement. The Trustee,
solely on behalf of the Noteholders, acknowledges, to the best of its knowledge,
that the Noteholders have, independently and without reliance on the Credit
Agent or any Senior Lender, and based on documents and information deemed by
them appropriate, made their own credit analysis and decision to enter into the
Indenture, this Agreement and the transactions contemplated hereby and thereby
and they will continue to make their own credit decision in taking or not taking
any action under the Indenture or this Agreement.

     7.2 No Warranties or Liability. The Trustee, on behalf of itself and the
Noteholders, acknowledges and agrees that each of the Credit Agent and the
Senior Lenders have made no express or implied representation or warranty,
including with respect to the execution, validity, legality, completeness,
collectibility or enforceability of any of the Senior Lender Documents, the
ownership of any Common Collateral or the perfection or priority of any Liens
thereon. The Senior Lenders will be entitled to manage and supervise their
respective loans and extensions of credit under the Senior Lender Documents in
accordance with law and as they may otherwise, in their sole discretion, deem
appropriate, and the Senior Lenders may manage their loans and extensions of
credit without regard to any rights or interests that the Trustee or any of the
Noteholders have in the Common Collateral or otherwise, except as otherwise
provided in this Agreement. Neither the Credit Agent nor any Senior Lender shall
have any duty to the Trustee or any of the Noteholders to act or refrain from
acting in a manner that allows, or results in, the occurrence or continuance of
an event of default or default under any agreements with the Company or any
Subsidiary thereof (including the Noteholder Documents), regardless of any
knowledge thereof that they may have or be charged with. Except as expressly set
forth in this Intercreditor Agreement, the Credit Agent, the Senior Lenders, the
Trustee and the Noteholders have not otherwise made to each other nor do they
hereby make to each other any warranties, express or implied, nor do they assume
any liability to each other with respect to (a) the enforceability, validity,
value or collectibility of any of the Noteholder Claims, the Senior Lender
Claims or any guarantee or security which may have been granted to any of them
in connection therewith, (b) the Company's, the Guarantors' (as defined in the
Senior Credit Agreement) or any Subsidiary's title to or right to transfer any
of the Common Collateral or (c) any other matter except as expressly set forth
in this Intercreditor Agreement.

     7.3 Obligations Unconditional. All rights, interests, agreements and
obligations of the Credit Agent and the Senior Lenders and the Trustee and the
Noteholders, respectively, hereunder shall remain in full force and effect
irrespective of:

          (a) any lack of validity or enforceability of any Senior Lender
     Documents or any Noteholder Documents;

          (b) any change in the time, manner or place of payment of, or in any
     other terms of, all or any of the Senior Lender Claims or Noteholder
     Claims, or any amendment or waiver or other modification, including any
     increase in the amount thereof,

                                      -17-
<PAGE>

     whether by course of conduct or otherwise, of the terms of the Senior
     Credit Agreement or any other Senior Lender Document or of the terms of the
     Indenture or any other Noteholder Document;

          (c) any exchange of any security interest in any Common Collateral or
     any other collateral, or any amendment, waiver or other modification,
     whether in writing or by course of conduct or otherwise, of all or any of
     the Senior Lender Claims or Noteholder Claims or any guarantee thereof;

          (d) the commencement of any Insolvency or Liquidation Proceeding in
     respect of the Company or any other Grantor; or

          (e) any other circumstances that otherwise might constitute a defense
     available to, or a discharge of, the Company or any other Grantor in
     respect of the Senior Lender Claims, or of the Trustee or any Noteholder in
     respect of this Agreement.

     Section 8. Miscellaneous.

     8.1 Conflicts. Subject to Section 8.20, in the event of any conflict
between the provisions of this Agreement and the provisions of the Senior Lender
Documents or the Noteholder Documents, the provisions of this Agreement shall
govern.

     8.2 Continuing Nature of this Agreement; Severability. This Agreement shall
continue to be effective until the Discharge of Senior Lender Claims shall have
occurred. This is a continuing agreement of lien subordination and the Senior
Lenders may continue, at any time and without notice to the Trustee or any
Noteholder, to extend credit and other financial accommodations and lend monies
to or for the benefit of the Company or any other Grantor constituting Senior
Lender Claims in reliance hereon. The terms of this Agreement shall survive, and
shall continue in full force and effect, in any Insolvency or Liquidation
Proceeding. Any provision of this Agreement that is prohibited or unenforceable
in any jurisdiction shall not invalidate the remaining provisions hereof, and
any such prohibition or unenforceability in any jurisdiction shall not
invalidate or render unenforceable such provision in any other jurisdiction.

     8.3 Amendments; Waivers. No amendment, modification or waiver of any of the
provisions of this Agreement by the Trustee or the Credit Agent shall be deemed
to be made unless the same shall be in writing signed on behalf of the party
making the same or its authorized agent and each waiver, if any, shall be a
waiver only with respect to the specific instance involved and shall in no way
impair the rights of the parties making such waiver or the obligations of the
other parties to such party in any other respect or at any other time. The
Company and other Grantors shall not have any right to consent to or approve any
amendment, modification or waiver of any provision of this Agreement except to
the extent their rights are affected.

     8.4 Information Concerning Financial Condition of the Company and the
Subsidiaries. The Credit Agent and the Senior Lenders, on the one hand, and the
Noteholders, on the other hand, shall each be responsible for keeping themselves
informed of (a) the financial condition of the Company and the Subsidiaries and
all endorsers and/or guarantors of the Noteholder Claims or the Senior Lender
Claims and (b) all other circumstances bearing upon the risk

                                      -18-
<PAGE>

of nonpayment of the Noteholder Claims or the Senior Lender Claims. The Credit
Agent and the Senior Lenders shall have no duty to advise the Trustee or any
Noteholder of information known to it or them regarding such condition or any
such circumstances or otherwise. In the event that the Credit Agent or any of
the Senior Lenders, in its or their sole discretion, undertakes at any time or
from time to time to provide any such information to the Trustee or any
Noteholder, it or they shall be under no obligation (w) to make, and the Credit
Agent and the Senior Lenders shall not make, any express or implied
representation or warranty, including with respect to the accuracy,
completeness, truthfulness or validity of any such information so provided, (x)
to provide any additional information or to provide any such information on any
subsequent occasion, (y) to undertake any investigation or (z) to disclose any
information that, pursuant to accepted or reasonable commercial finance
practices, such party wishes to maintain confidential or is otherwise required
to maintain confidential.

     8.5 Subrogation. The Trustee, on behalf of itself and the Noteholders,
hereby waives any rights of subrogation it may acquire as a result of any
payment hereunder until the Discharge of Senior Lender Claims has occurred.

     8.6 Application of Payments. Except as otherwise provided herein, all
payments received by the Senior Lenders may be applied, reversed and reapplied,
in whole or in part, to such part of the Senior Lender Claims as the Senior
Lenders, in their sole discretion, deem appropriate, consistent with the terms
of the Senior Lender Documents. Except as otherwise provided herein, the
Trustee, on behalf of itself and the Noteholders, assents to any such extension
or postponement of the time of payment of the Senior Lender Claims or any part
thereof and to any other indulgence with respect thereto, to any substitution,
exchange or release of any security that may at any time secure any part of the
Senior Lender Claims and to the addition or release of any other Person
primarily or secondarily liable therefor.

     8.7 Consent to Jurisdiction; Waivers. The parties hereto consent to the
jurisdiction of any state or federal court located in New York, New York, and
consent that all service of process may be made by registered mail directed to
such party as provided in Section 8.8 for such party. Service so made shall be
deemed to be completed three days after the same shall be posted as aforesaid.
The parties hereto waive any objection to any action instituted hereunder in any
such court based on forum non conveniens, and any objection to the venue of any
action instituted hereunder in any such court. Each of the parties hereto waives
any right it may have to trial by jury in respect of any litigation based on, or
arising out of, under or in connection with this Agreement, or any course of
conduct, course of dealing, verbal or written statement or action of any party
hereto in connection with the subject matter hereof.

     8.8 Notices. All notices to the Noteholders and the Senior Lenders
permitted or required under this Agreement may be sent to the Trustee and the
Credit Agent, respectively. Unless otherwise specifically provided herein, any
notice or other communication herein required or permitted to be given shall be
in writing and may be personally served, telecopied or sent by courier service
or U.S. mail and shall be deemed to have been given when delivered in person or
by courier service, upon receipt of a telecopy or electronic mail or four
Business Days after deposit in the U.S. mail (registered or certified, with
postage prepaid and properly addressed). For the purposes hereof, the addresses
of the parties hereto shall be as set forth below

                                      -19-
<PAGE>

each party's name on the signature pages hereto, or, as to each party, at such
other address as may be designated by such party in a written notice to all of
the other parties.

     8.9 Further Assurances. Each of the Trustee, on behalf of itself and the
Noteholders, and the Credit Agent, on behalf of itself and the Senior Lenders,
agrees that each of them, at the expense of the Company, shall take such further
action and shall execute and deliver to the Credit Agent and the Senior Lenders
such additional documents and instruments (in recordable form, if requested) as
the Credit Agent or the Senior Lenders may reasonably request to effectuate the
terms of and the lien priorities contemplated by this Agreement.

     8.10 Governing Law. This Agreement has been delivered and accepted at and
shall be deemed to have been made at New York, New York and shall be
interpreted, and the rights and liabilities of the parties bound hereby
determined, in accordance with the laws of the State of New York.

     8.11 Binding on Successors and Assigns. This Agreement shall be binding
upon the Credit Agent, the Senior Lenders, the Trustee, the Noteholders, the
Company, the Company's Subsidiaries party hereto and their respective permitted
successors and assigns.

     8.12 Specific Performance. The Credit Agent may demand specific performance
of this Agreement. The Trustee, on behalf of itself and the Noteholders, hereby
irrevocably waives any defense based on the adequacy of a remedy at law and any
other defense that might be asserted to bar the remedy of specific performance
in any action that may be brought by the Credit Agent.

     8.13 Section Titles. The section titles contained in this Agreement are and
shall be without substantive meaning or content of any kind whatsoever and are
not a part of this Agreement.

     8.14 Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be an original and all of which shall together
constitute one and the same document.

     8.15 Authorization. By its signature, each Person executing this Agreement
on behalf of a party hereto represents and warrants to the other parties hereto
that it is duly authorized to execute this Agreement. The Credit Agent
represents and warrants that this Agreement is binding upon the Lenders.

     8.16 No Third Party Beneficiaries; Successors and Assigns. This Agreement
and the rights and benefits hereof shall inure to the benefit of, and be binding
upon, each of the parties hereto and their respective successors and assigns and
shall inure to the benefit of each of, and be binding upon, the holders of
Senior Lender Claims and Noteholder Claims. No other Person shall have or be
entitled to assert rights or benefits hereunder.

     8.17 Effectiveness. This Agreement shall become effective when executed and
delivered by the parties hereto. This Agreement shall be effective both before
and after the commencement of any Insolvency or Liquidation Proceeding. All
references to the Company or any other Grantor shall include the Company or any
other Grantor as debtor and debtor-in-

                                      -20-
<PAGE>

possession and any receiver or trustee for the Company or any other Grantor (as
the case may be) in any Insolvency or Liquidation Proceeding.

     8.18 Credit Agent and Trustee. It is understood and agreed that (a) PNC
Bank, National Association is entering into this Agreement in its capacity as
administrative agent and the provisions of Article 10 of the Credit Agreement
applicable to PNC Bank, National Association as administrative agent thereunder
shall also apply to PNC Bank, National Association as Credit Agent hereunder and
(b) JPMorgan Chase Bank is entering in this Agreement in its capacity as Trustee
and the provisions of Article 7 of the Indenture applicable to the Trustee
thereunder shall also apply to the Trustee hereunder.

     8.19 Designations. For purposes of the provisions hereof and the Indenture
requiring the Company to designate Indebtedness for the purposes of the term
"First-Lien Indebtedness", any such designation shall be sufficient if the
relevant designation is set forth in writing, signed on behalf of the Company by
an officer thereof and delivered to the Trustee and the Credit Agent. For all
purposes hereof and the Indenture, the Company hereby designates the
Indebtedness incurred pursuant to the Credit Agreement as the First-Lien
Indebtedness.

     8.20 Relative Rights. Notwithstanding anything in this Agreement to the
contrary, nothing in this Agreement is intended to or will (a) amend, waive or
otherwise modify the provisions of the Senior Credit Agreement or the Indenture
or any other Senior Lender Documents or Noteholder Documents entered into in
connection with the Senior Credit Agreement or the Indenture or permit the
Company or any Subsidiary to take any action, or fail to take any action, to the
extent such action or failure would otherwise constitute a breach of, or default
under, the Senior Credit Agreement or any other Senior Lender Documents entered
into in connection with the Senior Credit Agreement or the Indenture or any
other Noteholder Documents entered into in connection with the Indenture, (b)
change the relative priorities of the Senior Lender Claims or the Liens granted
under the Senior Lender Documents on the Common Collateral (or any other assets)
as among the Senior Lenders, (c) otherwise change the relative rights of the
Senior Lenders in respect of the Common Collateral as among such Senior Lenders
or (d) obligate the Company or any Subsidiary to take any action, or fail to
take any action, that would otherwise constitute a breach of, or default under,
the Senior Credit Agreement or any other Senior Lender Document entered into in
connection with the Senior Credit Agreement or the Indenture or any other
Noteholder Documents entered into in connection with the Indenture.

     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the date first written above.

                                     CREDIT AGENT:

                                     PNC BANK, NATIONAL ASSOCIATION,

                                     By:  /s/ Thomas A. Majeski
                                          -----------------------------
                                          Name:   Thomas A. Majeski
                                          Title:  Vice President

                                      -21-
<PAGE>

                                     Address:

                                      -22-
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the date first written above.

                       TRUSTEE:

                       JPMORGAN CHASE BANK, not in its individual capacity
                            but solely as trustee,

                       By:  /s/ Catherine F. Donohue
                            --------------------------------
                            Name:   Catherine F. Donohue
                            Title:  Vice President

                       Address:    4 New York Plaza, 15th Floor
                                   New York, New York 10004
                                   Attn: Institutional Trust Services

                                      -23-
<PAGE>

     The foregoing Intercreditor Agreement is hereby confirmed and accepted as
of the date first above written.

                                  KOPPERS INC.

                                  By:  /s/ Walter W. Turner
                                       -----------------------------
                                       Name:   Walter W. Turner
                                       Title:  President and Chief Executive
                                               Officer

                                  WORLD-WIDE VENTURES CORPORATION

                                  By:  /s/ Walter W. Turner
                                       ------------------------------
                                       Name:   Walter W. Turner
                                       Title:  President

                                  KOPPERS CONCRETE PRODUCTS, INC.

                                  By:  /s/ Randall D. Collins
                                       ------------------------------
                                       Name:   Randall D. Collins
                                       Title:  Secretary

                                  CONCRETE PARTNERS INC.

                                  By:  /s/ Randall D. Collins
                                       ------------------------------
                                       Name:   Randall D. Collins
                                       Title:  Secretary

                                  KOPPERS INDUSTRIES OF DELAWARE, INC.

                                  By:  /s/ M. Claire Schaming
                                       ------------------------------
                                       Name:   M. Claire Schaming
                                       Title:  Secretary and Treasurer

                                      -24-
<PAGE>

                                  KOPPERS REDEMPTIONS, INC.

                                  By:  /s/ M. Claire Schaming
                                       ------------------------------
                                       Name:   M. Claire Schaming
                                       Title:  Treasurer and Assistant Secretary

                                  KOPPERS INVESTMENT SUBSIDIARY PTY LTD

                                  By:  /s/ M. Claire Schaming
                                       ------------------------------
                                       Name:   M. Claire Schaming
                                       Title:  Attorney-In-Fact

                                  KOPPERS AUSTRALIA PTY LTD

                                  By:  /s/ M. Claire Schaming
                                       ------------------------------
                                       Name:   M. Claire Schaming
                                       Title:  Attorney-In-Fact

                                  KOPPERS WOOD PRODUCTS PTY LTD

                                  By:  /s/ M. Claire Schaming
                                       ------------------------------
                                       Name:   M. Claire Schaming
                                       Title:  Attorney-In-Fact

                                  KOPPERS CARBON MATERIAL & CHEMICALS PTY LTD

                                  By:  /s/ M. Claire Schaming
                                       ------------------------------
                                       Name:   M. Claire Schaming
                                       Title:  Attorney-In-Fact

                                  CONTINENTAL CARBON AUSTRALIA PTY LTD

                                  By:  /s/ M. Claire Schaming
                                       ------------------------------
                                       Name:   M. Claire Schaming
                                       Title:  Attorney-In-Fact

                                      -25-
<PAGE>

                                  KOPPERS SHIPPING PTY LTD

                                  By:  /s/ M. Claire Schaming
                                       ------------------------------
                                       Name:   M. Claire Schaming
                                       Title:  Attorney-In-Fact

                                  KOPPERS AUSTRALIA HOLDING COMPANY PTY LTD

                                  By:  /s/ M. Claire Schaming
                                       ------------------------------
                                       Name:   M. Claire Schaming
                                       Title:  Attorney-In-Fact

                                      -26-
<PAGE>

                                   SCHEDULE I

World-Wide Ventures Corp.

Koppers Concrete Products, Inc.

Concrete Partners Inc.

Koppers Industries of Delaware, Inc.

Koppers Redemptions, Inc.

Koppers Investment Subsidiary Pty Ltd

Koppers Australia Pty Ltd

Koppers Wood Products Pty Ltd

Koppers Carbon Material & Chemicals Pty Ltd

Continental Carbon Australia Pty Ltd

Koppers Shipping Pty Ltd

Koppers Australia Holding Company Pty LtdExhibit 10.1  Stock Purchase Agreement

                            STOCK PURCHASE AGREEMENT

     This Stock Purchase Agreement ("Agreement") is made, entered into and
deemed effective as of December 29, 2003 and is by and between Michael Kirsh
(the "Seller") and Brian Gruson (the "Buyer").

                                  W I T N E S S

     WHEREAS, Ucellit.com Inc., pursuant to U.S. law, is a reporting company
that has substantial compliance obligations.

     WHEREAS, the Seller owns 1,500,000 shares (the "Shares") of common stock of
Ucellit.com Inc., a State of Washington corporation.

     WHEREAS, the Seller desires to relieve himself of the cost of Ucellit.com
Inc.'s cost of compliance with U.S. law.

     WHEREAS, the Seller desires to sell the Shares to the Buyer and the Buyer
desires to purchase the Shares from the Seller, on the terms and conditions set
forth in this Agreement;

     NOW, THEREFORE, for and in consideration of the premises and the mutual
covenants and agreements hereinafter set forth and other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto, intending to be legally bound, hereby agree as follows:

                                    ARTICLE I
                           SALE AND PURCHASE OF STOCK

1.1  Sale and Purchase of Stock.  Upon the terms and subject to the conditions
     --------------------------
     set forth in this Agreement, on the date first written above the Seller
     hereby assigns, transfers and sells the Shares to the Buyer.

1.2  Purchase Price.  In consideration for the assignment, transfer and sale by
     --------------
     the Seller of the Shares to Buyer, Buyer shall pay to Seller the purchase
     price of CA$10.00 (the "Purchase Price") for the Shares, payable in cash.

                                   ARTICLE II
                         CLOSING; PROCEDURES AT CLOSING

2.1  Closing.  The consummation of the purchase and sale and assignment of the
     -------
     Shares pursuant hereto (the "Closing") shall be effective as of December
     29, 2003. (the "Closing Date").

2.2  Closing Deliveries by the Seller.  On the Closing Date, the Seller shall
     --------------------------------
     deliver, or cause to be delivered to the Buyer, the Certificates evidencing
     the Shares duly endorsed for assignment and transfer to the Buyer, or with
     appropriate stock transfer powers, and such other instruments or documents
     as the Buyer may reasonably request.

2.3  Closing Deliveries by the Buyer.  On the Closing Date, the Buyer shall
     -------------------------------
     deliver or cause to be delivered to the Seller the amount of CA$10.00.

                                   ARTICLE VI
                          REPRESENTATIONS OF THE BUYER

<PAGE>
     The Buyer represents to the Seller that :

3.1  The Buyer has had the opportunity to engage his own attorney for this
     Agreement. The Buyer has had the opportunity to ask questions of the Seller
     about Ucellit.com Inc. The Buyer has had the opportunity to review
     Ucellit.com Inc.'s Form 10-KSB for the year ended December 31, 2002 and
     Forms 10-QSB for the quarters ended March 31, June 30 and September 30,
     2003.

3.2  Regarding Ucellit.com Inc., the Buyer is aware that:

     (a)  If the Buyer desires to become a Director then the Buyer must either
     ask the current sole Director, Mark Epstein, to appoint the Buyer as an
     additional Director, or, the Buyer must call a meeting of shareholders or
     obtain the consent of a majority of shareholders to elect new directors. In
     any case, Mr. Epstein, if he desires, may resign as Director at any time,
     and in the case of such a resignation, Ucellit.com Inc. would be required
     to file a Form 8-K reporting such a resignation of a Director. Ucellit.com
     Inc. would be required to file a Form 8-K reporting the appointment or
     election of a new Directors.

     (b)  Ucellit.com Inc. will be required, immediately upon the consummation
     of this Agreement, to file a Form 8-K disclosing the change of control of
     Ucellit.com Inc that will occur as a result of this Agreement.

     (c)  Since it could be construed, if the foregoing occur, that the Buyer's
     becoming a Director and the subsequent resignation of Mr. Epstein were in
     fact an oral or unspoken understanding related to this Agreement, that it
     is advisable that Ucellit.com Inc. file a Form 14f-1 as soon as possible
     after the consummation of this Agreement, whereby the Buyer would not be
     able to take office as a Director (even though appointed or elected) until
     ten days after the Form 14f-1 was mailed to all shareholders.

     (d)  Ucellit.com Inc. has not been able to obtain a market maker for its
     common stock which had been theorized as being the result of the NASD
     scaring the market maker into withdrawing the Form 211 because of the
     NASD's suspicions about whether there were deficiencies in Ucellit.com
     Inc.'s IPO in the year 2000.

                                   ARTICLE VI
                               GENERAL PROVISIONS

4.1  Notices.  Any notice, request, instrument or other document to be given
     -------
     hereunder shall be in writing and shall be deemed delivered on the date of
     delivery when delivered personally, or one day after dispatch when sent by
     a reputable overnight delivery service maintaining records or receipt, or
     three days after dispatch when sent by certified or registered mail, return
     receipt requested, postage prepaid:

          If to the Seller:

          Michael Kirsh
          (address) ____________________________
          ______________________________________

          If to the Buyer:

          Brian Gruson
          (address) ____________________________
          ______________________________________

4.2  Entire Agreement.  This Agreement constitutes the entire agreement between
     ----------------
     the parties with respect to the subject matter hereof and supersedes all
     prior agreements and undertakings, both written and oral, between

<PAGE>
     the parties with respect to the subject matter hereof.

4.3  Governing Law.  This Agreement shall be governed by, and construed in
     -------------
     accordance with, the laws of Canada, regardless of the laws that might
     otherwise govern under applicable principles of conflicts of laws thereof.

4.4  Headings.  The descriptive headings contained in this Agreement are
     --------
     included for convenience of reference only and shall not affect in any way
     the meaning or interpretation of this Agreement.

4.5  Number, Gender.  Whenever the context so requires, the singular shall
     --------------
     include the plural and the plural shall include the singular, and the
     gender of any pronoun shall include the other genders.

4.6  Severability.  Wherever possible, each provision of this Agreement shall be
     ------------
     interpreted in such a manner as to be effective and valid under applicable
     law, but if any provision of this Agreement shall be prohibited by or
     invalidated under applicable law, such provision shall be ineffective to
     the extent of such provision and the remaining provisions of this Agreement
     shall remain fully effective.

4.7  Counterparts.  This Agreement may be executed in one or more counterparts,
     ------------
     and by the different parties hereto in separate counterparts, each of which
     when executed shall be deemed to be an original but all of which taken
     together shall constitute one and the same agreement. This signatures in
     Agreement may be faxed to the other party as an indicia of the signature.

4.8  Assignment; Successors.  This Agreement shall be binding upon and shall
     ----------------------
     inure to the benefit of the parties hereto, their respective successors,
     successors in title, and lawful assigns. No party shall have the right to
     assign this Agreement, or any interest under this Agreement, without the
     prior written consent of the other party.

4.9  Costs And Expenses.  Each party shall bear any the fees and any expenses
     ------------------
     incurred by it in negotiating and preparing this Agreement and in
     consummating the transactions contemplated by this Agreement.

                      [Signatures Appear On The Next Page]

<PAGE>
     IN WITNESS WHEREOF, the parties hereto have each caused this Agreement to
be executed as of the date first written above.

                              SELLER:

                              Michael Kirsh

                              By:  Michael Kirsh
                                   /s/ Michael Kirsh

                              BUYER:

                              Brian Gruson

                              By:  Brian Gruson
                                   /s/ Brian Gruson

<PAGE>

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