Document:

[GRAPHIC OMITTED]          [FOUNDATION COAL HOLDINGS, INC. LOGO]                    [GRAPHIC OMITTED]

     NUMBER                                                                               SHARES

FCH

   COMMON STOCK                                                                         COMMON STOCK

                         FOUNDATION COAL HOLDINGS, INC.
              INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE                   CUSIP 000000 00 0
                                                                        See reverse side for certain definitions

This certifies that:

is the owner of

FULLY PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK, $0.01 PAR VALUE PER
SHARE, OF
----------------------  FOUNDAION COAL HOLDINGS, INC. -------------------------
transferable on the books of the Corporation by said owner in person or by his
duly authorized attorney upon surrender of this certificate properly endorsed.
This certificate and the shares represented hereby are issued and shall be held
subject to the provisions of the Certificate of Incorporation and the Bylaws of
the Corporation, as amended, copies of which are on file at the office of the
Transfer Agent of the Corporation, and to which reference is hereby expressly
made and to all of which the holder hereof by acceptance of this certificate
hereby assents. This certificate is not valid until countersigned by the
Transfer Agent and registered by the Registrar.
        Witness the facsimile of the Corporation's seal and the facsimile
signatures of its duly authorized officers.

Dated:

/s/ Greg A. Walker                [GRAPHIC OMITTED]        /s/ James F. Roberts
-------------------------   FOUNDATION COAL HOLDINGS, INC. -------------------
                SECRETARY             CORPORATE             PRESIDENT AND CHIEF
                                         SEAL                 EXECUTIVE OFFICER
                                         2004
                                       DELAWARE

COUNTERSIGNED AND REGISTERED
      THE BANK OF NEW YORK
              TRANSFER AGENT AND REGISTRAR
BY

                      AUTHORIZED SIGNATURE

---------------------------------------------------      -----------------------------------------------------
            AMERICAN BANK NOTE COMPANY                   PRODUCTION COORDINATOR: VERONICA GLIATTI 931-490-1706
                711 ARMSTRONG LANE                                     PROOF OF SEPTEMBER 7, 2004
             COLUMBIA, TENNESSEE 38401                              FOUNDATION COAL HOLDINGS, INC.
                  (931) 388-3003                                            TSB 17164 FC
---------------------------------------------------      -----------------------------------------------------
         SALES:  C. SHARKEY  302-731-7088                              Operator:       Ron
---------------------------------------------------      -----------------------------------------------------
 / ETHER 19 / LIVE JOBS / F / FOUNDATION 17164 FC                               New
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        The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

        TEN COM  - as tenants in common                  UNIF GIFT MIN ACT - ________ Custodian _________
        TEN EST  - as tenants by the entireties                                (Cust)            (Minor)
        JT TEN   - as joint tenants with right of                            under Uniform Gifts to Minors
                   survivorship and not as tenants                            Act ____________________
                   in common                                                             (State)

                                                         UNIF GIFT MIN ACT - ________ Custodian _________
                                                                               (Cust)            (Minor)
                                                                           under Uniform Transfers to Minors
                                                                              Act ____________________
                                                                                         (State)

    Additional abbreviations may also be used though not in the above list.

For value received, ____________________________ hereby sell, assign and
transfer unto

    PLEASE INSERT SOCIAL SECURITY OR
  OTHER IDENTIFYING NUMBER OF ASSIGNEE

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

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

--------------------------------------------------------------------------------
  (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE OF ASSIGNEE)

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

--------------------------------------------------------------------------------
                                                                          shares
--------------------------------------------------------------------------
of the common stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint
                                   ---------------------------------------------

                                                                       Attorney
----------------------------------------------------------------------
to transfer the said stock on the books of the within named Corporation with
full power of substitution in the premises.

Dated
     ---------------------------------

                                -----------------------------------------------
                        NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND
                                WITH THE NAME AS WRITTEN UPON THE FACE OF THE
                                CERTIFICATE IN EVERY PARTICULAR, WITHOUT
                                ALTERATION OR ENLARGEMENT OR ANY CHANGE
                                WHATEVER.

                                -----------------------------------------------
       SIGNATURE(S) GUARANTEED: THE SIGNATURES MUST BE GUARANTEED BY AN ELIGIBLE
                                GUARANTOR INSTITUTION (BANKS, STOCKBROKERS,
                                SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS
                                WITH MEMBERSHIP IN AN APPROVED SIGNATURE
                                GUARANTEE MEDALLION PROGRAM), PURSUANT TO S.E.C.
                                RULE 17Ad-16

KEEP THIS CERTIFICATE IN A SAFE PLACE. IF IT IS LOST, STOLEN, MUTILATED OR
DESTROYED, THE CORPORATION WILL REQUIRE A BOND OF INDEMNITY AS A CONDITION TO
THE ISSUANCE OF A REPLACEMENT CERTIFICATE.

---------------------------------------------------      -----------------------------------------------------
            AMERICAN BANK NOTE COMPANY                   PRODUCTION COORDINATOR: VERONICA GLIATTI 931-490-1706
                711 ARMSTRONG LANE                                     PROOF OF SEPTEMBER 7, 2004
             COLUMBIA, TENNESSEE 38401                              FOUNDATION COAL HOLDINGS, INC.
                  (931) 388-3003                                            TSB 17164 BK
---------------------------------------------------      -----------------------------------------------------
         SALES:  C. SHARKEY  302-731-7088                              Operator:       Ron
---------------------------------------------------      -----------------------------------------------------
 / ETHER 19 / LIVE JOBS / F / FOUNDATION 17164 BK                               New
---------------------------------------------------      -----------------------------------------------------EXECUTION COPY

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

                          REGISTRATION RIGHTS AGREEMENT

                                   CONCERNING

                          FOUNDATION COAL HOLDINGS, LLC

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

                            DATED AS OF JULY 30, 2004

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

                                TABLE OF CONTENTS

SECTION                                                                     PAGE

Section 1. Definitions.........................................................1

Section 2. Registration Under the Securities Act...............................5
         (a)          Required Registration....................................5
         (b)          Incidental Registration..................................8
         (c)          Expenses.................................................9
         (d)          Effective Registration Statement; Suspension............10
         (e)          Selection of Underwriters...............................10

Section 3. Restrictions on Public Sale........................................10

Section 4. Registration Procedures............................................11

Section 5. Indemnification; Contribution......................................16
         (a)          Indemnification by the Company..........................16
         (b)          Indemnification by Holders..............................17
         (c)          Conduct of Indemnification Proceedings..................17
         (d)          Contribution............................................18

Section 6. Miscellaneous......................................................19
         (a)          No Inconsistent Agreements..............................19
         (b)          Amendments and Waivers..................................19
         (c)          Investor Action.........................................19
         (d)          Notices.................................................20
         (e)          Successors and Assigns..................................21
         (f)          Recapitalizations, Exchanges, etc.,
                      Affecting Registrable Securities........................21
         (g)          Counterparts............................................22
         (h)          Descriptive Headings, Etc...............................22
         (i)          Severability............................................22
         (j)          Governing Law...........................................22
         (k)          Specific Performance....................................22
         (l)          Arbitration.............................................23
         (m)          Entire Agreement........................................23

                                      (i)

         REGISTRATION RIGHTS AGREEMENT (the "Agreement") dated as of July 30,
2004, by and between Foundation Coal Holdings, LLC, a Delaware limited liability
company (the "Company"), the Sponsor Members (as hereinafter defined), the
Investor Members (as hereinafter defined) and the Management Members (as
hereinafter defined) and any other Person that shall from and after the date
hereof acquire or otherwise be the transferee of any Registrable Securities and
who shall be a Permitted Transferee (as hereinafter defined) of any Member
(herein referred to collectively as the "Holders" and individually as a
"Holder").

         WHEREAS, Foundation Coal Corporation (formerly known as American Coal
Acquisition Corp.) is party to a Stock Purchase Agreement dated as of May 24,
2004 (the "SPA") among Foundation Coal Corporation and RAG Coal International AG
relating to the purchase and sale of RAG American Coal Holding, Inc. (the
"Acquired Business").

         WHEREAS, the Company and the Members are parties to the amended and
restated limited liability company operating agreement describing the rights and
privileges of the Units (the "LLC Agreement").

         WHEREAS, the Company has agreed to provide registration rights on the
terms and subject to the conditions provided herein.

         NOW, THEREFORE, in consideration of the premises and the
representations, warranties and agreements contained herein, and for other good
and valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, and intending to be legally bound hereby, the parties hereto agree
as follows:

                         SECTION 1. DEFINITIONS.

         As used in this Agreement, the following terms shall have the following
meanings:

         "Act" has the meaning set forth in the LLC Agreement.

         "Affiliate" has the meaning set forth in the LLC Agreement.

         "AMCI Investor Group" has the meaning set forth in the LLC Agreement.

         "Blackstone Investor Group" has the meaning set forth in the LLC
Agreement.

         "Board" has the meaning set forth in the LLC Agreement.

         "Capital Contribution" has the meaning set forth in the LLC Agreement.

         "Class A Units" has the meaning set forth in the LLC Agreement.

         "Class D Units" has the meaning set forth in the LLC Agreement.

         "Company" has the meaning set forth in the preamble and also includes
the Company's successors, including by means of a Solvent Reorganization.

         "Dispute" has the meaning set forth in Section 6(l).

         "Exchange Act" has the meaning set forth in the LLC Agreement.

         "Fair Market Value" has the meaning set forth in the Management Members
Agreements.

         "FRC Investor Group" has the meaning set forth in the LLC Agreement.

         "Holder" has the meaning set forth in the preamble.

         "Incidental Registration" means a registration required to be effected
by the Company pursuant to Section 2(b).

         "Incidental Registration Statement" means a registration statement of
the Company, as provided in Section 2(b), which covers any of the Registrable
Securities on an appropriate form in accordance with the Securities Act and all
amendments and supplements to such registration statement, including
post-effective amendments, in each case including the Prospectus contained
therein, all exhibits thereto and all material incorporated by reference
therein.

         "Investor Group" has the meaning set forth in the LLC Agreement.

         "Investor Member" has the meaning set forth in the LLC Agreement.

         "Initial Public Offering" means the closing of the first public
offering of and sale of equity securities of the Company or, if earlier, the
first public offering and sale of equity securities of the Company by any other
Person in a secondary offering pursuant to an effective registration statement
filed by the Company under the Securities Act.

         "IRR", with respect to any Person, means the discount rate, using
cumulative annual compounding, at which the net present value of such Person's
Capital Contributions to and distributions from the Company, and proceeds in
respect of a sale or redemption of securities of the Company held by such
Person, equals zero. Such Person's internal rate of return shall be calculated
on the basis of the actual number of days elapsed over a 360-day year using
cumulative annual compounding. Each internal rate of return calculation shall be
determined from the date such Capital Contribution was made and with respect to
each distribution or receipt of proceeds from the date such distribution or
proceeds are received.

         "Majority Holders" means Holders of Class A Units representing in the
aggregate a majority of the aggregate number of outstanding Class A Units
beneficially owned by Holders.

         "Management Member" has the meaning set forth in the LLC Agreement.

         "Management Members Agreements" has the meaning set forth in the LLC
Agreement.

         "NASD" means the National Association of Securities Dealers, Inc.

                                       2

         "Permitted Transferee" has the meaning set forth in the LLC Agreement.

         "Person" has the meaning set forth in the LLC Agreement.

         "Prospectus" means the prospectus included in a Registration Statement,
including any preliminary Prospectus, and any such Prospectus as amended or
supplemented by any prospectus supplement with respect to the terms of the
offering of any portion of the Registrable Securities and by all other
amendments and supplements to such Prospectus, including post-effective
amendments, and in each case including all material incorporated by reference
therein.

         "Qualified IPO" has the meaning set forth in the LLC Agreement.

         "Reclassified Securities" has the meaning set forth in the LLC
Agreement.

         "Registrable Securities" means (i) any Class A Units and Class D Units
issued or issuable to the Members pursuant to the LLC Agreement, (ii) any Class
A Units and Class D Units subsequently acquired by the Members or any of their
Affiliates, and (iii) any securities of the Company issued or issuable directly
or indirectly with respect to or in exchange, or substitution for, or conversion
of the securities referred to in clauses (i) or (ii) above by way of dividend or
distribution, recapitalization, merger, consolidation, exchange or other
reorganization, including, without limitation, Reclassified Securities issued
with respect to or in exchange, or substitution for, or conversion of such
Units; provided, that each Class D Unit that is Registrable Security with
respect to any Required Registration under Section 2(a) or any registration
under Section 2(b), as the case may be, shall convert into one Class A Unit
immediately prior to the consummation of the offering that is the subject of
such Required Registration or registration, as the case may be. As to any
particular Registrable Securities, such securities shall cease to be Registrable
Securities when they have been distributed to the public pursuant to an offering
registered under the Securities Act or sold to the public through a broker,
dealer or market maker in compliance with Rule 144 under the Securities Act (or
any similar rule then in force).

         "Registration Expenses" means (i) all registration, listing,
qualification and filing fees (including NASD filing fees), (ii) fees and
disbursements of counsel for the Company, (iii) accounting fees incident to any
such registration, (iv) blue sky fees and expenses (including counsel fees in
connection with the preparation of a Blue Sky Memorandum and legal investment
survey), (v) all reasonable expenses of any Persons incurred on behalf of the
Investor Members or the Company in preparing or assisting in preparing,
printing, distributing, mailing and delivering any Registration Statement, any
Prospectus, any underwriting agreements, transmittal letters, securities sales
agreements, securities certificates and other documents relating to the
performance of and compliance with this Agreement, (vi) the expenses incurred in
connection with making road show presentations and holding meetings with
potential investors to facilitate the distribution and sale of Registrable
Securities which are customarily borne by the issuer, (vii) all internal
expenses of the Company (including all salaries and expenses of officers and
employees performing legal or accounting duties) and (viii) the reasonable fees
and expenses of the Investor Members incurred in connection with the sale of
Registrable Securities (including

                                       3

reasonable fees and expenses of counsel for the Sponsor Members); provided,
however, Registration Expenses shall not include any Selling Expenses.

         "Registration Statement" means any registration statement of the
Company which covers any Registrable Securities and all amendments and
supplements to any such Registration Statement, including post-effective
amendments, in each case including the Prospectus contained therein, all
exhibits thereto and all material incorporated by reference therein.

         "Required Registration" means a registration required to be effected
pursuant to Section 2(a)(i).

         "Required Registration Statement" means a Registration Statement which
covers the Registrable Securities requested to be included therein pursuant to
the provisions of Section 2(a)(i) on an appropriate form pursuant to the
Securities Act (other than pursuant to Rule 415 or any similar rule then in
force), and which form shall be available for the sale of the Registrable
Securities in accordance with the intended method or methods of distribution
thereof, and all amendments and supplements to such Registration Statement,
including post-effective amendments, in each case including the Prospectus
contained therein, all exhibits thereto and all material incorporated by
reference therein.

         "Required Shelf Registration Statement" means a Registration Statement
which covers the Registrable Securities requested to be included therein
pursuant to the provisions of Section 2(a)(i) on an appropriate form or any
similar successor or replacement form (in accordance with Section 4(a) hereof)
pursuant to Rule 415 of the Securities Act (or any similar rule then in force),
and which form shall be available for the sale of the Registrable Securities in
accordance with the intended method or methods of distribution thereof, and all
amendments and supplements to such Registration Statement, including
post-effective amendments, in each case including the Prospectus contained
therein, all exhibits thereto and all material incorporated by reference
therein.

         "SEC" means the United States Securities and Exchange Commission.

         "Securities Act" has the meaning set forth in the LLC Agreement.

         "Selling Expenses" means underwriting discounts, selling commissions
and stock transfer taxes applicable to the shares registered by the Holders,
fees and disbursements of counsel for the Holders (other than the Investor
Members) retained by them (other than with respect to the fees and disbursements
made in connection with the preparation of a Blue Sky Memorandum and legal
investment survey).

         "Solvent Reorganization" has the meaning set forth in the LLC
Agreement.

         "Sponsor Member" has the meaning set forth in the LLC Agreement.

         "Underwriter" has the meaning set forth in Section 5(a).

         "Underwritten Offering" means a sale of securities of the Company to an
Underwriter or Underwriters for reoffering to the public.

                                       4

         "Units" means the Class A Units and Class D Units.

                SECTION 2. REGISTRATION UNDER THE SECURITIES ACT.

         (a)  Required Registration.

              (i)  Right to Require Registration. (A) At any time from and after
          the second anniversary of the date of this Agreement, any Sponsor
          Member shall have the right to deliver a request in writing to the
          Company (a "Request") (which Request shall specify the Registrable
          Securities intended to be disposed, the identity of the Sponsor Member
          intending to dispose of such Registrable Securities, and the intended
          method of distribution thereof) that the Company register the
          Registrable Securities held by the specified Sponsor Member by filing
          with the SEC a Required Registration Statement (a "Demand
          Registration") or, after the Initial Public Offering of the Company, a
          Required Shelf Registration Statement (a "Shelf Registration");
          provided, however, that if such Request is made with respect to the
          Initial Public Offering of the Company and prior to the fourth
          anniversary of the date of this Agreement, no Sponsor Member shall be
          permitted to exercise its rights under this Section 2(a)(i)(A) unless
          the transaction contemplated by the Request would, in the reasonable
          opinion the Sponsor Member delivering such Request, result in an IRR
          to such Sponsor Member in respect of its Registrable Securities
          subject to such Request of at least 25%. At any time from and after
          the consummation of a Qualified IPO, any Investor Member shall have
          the right to deliver a Request to the Company (which Request shall
          specify the Registrable Securities intended to be disposed, the
          identity of the Investor Member intending to dispose of such
          Registrable Securities, and the intended method of distribution
          thereof) for a Demand Registration or, in the case of an Investor
          Member that is also a Sponsor Member, a Shelf Registration.

              (B)  Upon the receipt of any Request, the Company will, by the
          tenth calendar day thereafter, give written notice of such requested
          registration to all Holders of Registrable Securities, and each such
          Holder shall be entitled to notify the Company within ten days of
          receipt of notice of such Request of such Holder's election to include
          all or a portion of its Registrable Securities in such registration.
          Not later than the 60th calendar day after the receipt of such a
          Request by the Company, the Company will, subject to the other
          provisions of this Section 2(a), cause to be filed with the SEC a
          Required Registration Statement or Required Shelf Registration
          Statement, as the case may be, covering the Registrable Securities
          which the Company has been so requested to register in such Request
          and all other Registrable Securities which the Company has been
          requested to register by Holders thereof other than the Holder(s) who
          are members of the Investor Group initiating such Request, by written
          request given to the Company within 15 days after the giving of such
          written notice by the Company, providing for the registration under
          the Securities Act of the Registrable Securities which the Company has
          been so requested to register by all such Holders, to the extent
          necessary to permit the disposition of such Registrable Securities so
          to be registered in accordance with the intended methods of

                                       5

          distribution thereof specified in such Request or further requests,
          and shall use all reasonable efforts to have such Required
          Registration Statement or Required Shelf Registration Statement, as
          the case may be, declared effective by the SEC as soon as practicable
          thereafter and to keep such Required Registration Statement
          continuously effective for a period of at least (xx) 60 days, in the
          case of a Demand Registration (or, in the case of an Underwritten
          Offering, such period as the Underwriters shall reasonably require)
          following the date on which such Required Registration Statement is
          declared effective (or such shorter period which will terminate when
          all of the Registrable Securities covered by such Required
          Registration Statement have been sold pursuant thereto) or (yy) 180
          days, in the case of a Shelf Registration, following the date on which
          such Required Shelf Registration Statement is declared effective (or
          such shorter period which will terminate when all of the Registrable
          Securities covered by such Required Shelf Registration Statement have
          been sold pursuant thereto), including, in either case, if necessary,
          by filing with the SEC a post-effective amendment or a supplement to
          the Required Registration Statement or Required Shelf Registration
          Statement or the related Prospectus or any document incorporated
          therein by reference or by filing any other required document or
          otherwise supplementing or amending the Required Registration
          Statement or Required Shelf Registration Statement, if required by the
          rules, regulations or instructions applicable to the registration form
          used by the Company for such Required Registration Statement or
          Required Shelf Registration Statement or by the Securities Act, the
          Exchange Act, any state securities or blue sky laws, or any rules and
          regulations thereunder.

              (C)  The Company shall not be required to effect, pursuant to this
          Section 2(a)(i), (w) more than one Shelf Registration or Demand
          Registration within any continuous six month period, (x) any
          Underwritten Offering covering Registrable Securities with gross
          proceeds reasonably expected by the Holders to be less than $25
          million, (y) more than (i) three (3) Demand Registrations requested by
          each of the Blackstone Investor Group and the FRC Investor Group and
          (ii) one (1) Demand Registration requested by the AMCI Investor Group
          (provided that the members of the AMCI Investor Group shall have no
          right to, and shall not, make a Request in respect of such Demand
          Registration until such time as an offering in respect of a (I) Demand
          Registration on account of a Request made by either the Blackstone
          Investor Group or the FRC Investor Group or (II) a Qualified IPO that
          is a secondary offering has been consummated) and (z) more than one
          (1) Shelf Registration requested by each of the Blackstone Investor
          Group and the FRC Investor Group (which Shelf Registration, for the
          avoidance of doubt, shall not be deemed to be a Demand Registration
          under the immediately preceding clause (y)). The members of the AMCI
          Investor Group shall have no right to, and shall not, make a Request
          in respect of a Shelf Registration at any time.

              (D)  A Request may be withdrawn prior to the filing of the
          Required Registration Statement or Required Shelf Registration
          Statement by the Investor Group which made such Request (a "Withdrawn
          Request") and a

                                       6

          Required Registration Statement or Required Shelf Registration
          Statement may be withdrawn prior to the effectiveness thereof by the
          Holders of a majority of the Registrable Securities included therein
          (a "Withdrawn Required Registration"), and, in either such event, such
          withdrawal shall not be treated as a Required Registration for
          purposes of clauses (y) and (z) of the immediately preceding
          paragraph.

              (E)  Notwithstanding the foregoing, the Company may delay the
          filing of a registration statement required pursuant to this Section
          2(a)(i) if the Board determines that such action is in the best
          interests of the Company or its Members and only for a period not to
          exceed 90 days (a "Blackout Period"); provided that after any initial
          Blackout Period the Company may not invoke a subsequent Blackout
          Period until 12 months elapse from the end of any previous Blackout
          Period.

              (F)  The registration rights granted pursuant to the provisions of
          this Section 2(a)(i) shall be in addition to the registration rights
          granted pursuant to the other provisions of this Section 2.

         (ii) Priority in Required Registrations. If a Required Registration
     pursuant to this Section 2(a) involves an Underwritten Offering, and the
     sole Underwriter or the lead managing Underwriter, as the case may be, of
     such Underwritten Offering shall advise the Company in writing (with a copy
     to each Holder requesting registration) on or before the date five days
     prior to the date of pricing of such offering that, in its opinion, the
     amount of Registrable Securities requested to be included in such Required
     Registration exceeds the amount which can be sold in such offering without
     adversely affecting the distribution of the Registrable Securities being
     offered, the Company will include in such Required Registration only the
     amount of Registrable Securities that the Company is so advised can be sold
     in such offering; provided, however, that the Company shall be required to
     include in such Required Registration first, all Registrable Securities
     requested to be included in the Required Registration by the Investor
     Members and, to the extent not all such Registrable Securities can be
     included in such Required Registration, the number of Registrable
     Securities to be included shall be allocated pro rata on the basis of the
     number of Registrable Securities requested to be included in such Required
     Registration by all Investor Members requesting to participate in such
     Required Registration or on such other basis as shall be agreed among such
     Investor Members; second, all Registrable Securities requested to be
     included in such Required Registration by the other Holders and, to the
     extent not all such Registrable Securities can be included in such Required
     Registration, the number of Registrable Securities to be included shall be
     allocated pro rata on the basis of the number of Registrable Securities
     requested to be included in such Required Registration by all such Holders
     and third, all other securities requesting, in accordance with any
     registration rights which are granted in compliance with Section 6(a), to
     be included in such Required Registration which are of the same class as
     the Registrable Securities and, to the extent not all such securities can
     be included in such Required Registration, the number of securities to be
     included shall be allocated pro rata among the remaining holders thereof
     requesting inclusion in such

                                       7

     Required Registration on the basis of the number of securities requested to
     be included by all such holders.

    (b)  Incidental Registration.

         (i)  Right to Include Registrable Securities. If at any time from and
     after consummation of a Qualified IPO, the Company proposes to register any
     of its Class A Units under the Securities Act (other than (A) any
     registration of public sales or distributions solely by and for the account
     of the Company of securities issued (x) pursuant to any employee benefit or
     similar plan or any dividend reinvestment plan or (y) in any acquisition by
     the Company, (B) pursuant to any debt financing of the acquisition of the
     Acquired Businesses or (C) pursuant to Section 2(a) hereof) in connection
     with a primary offering for cash for the account of the Company, the
     Company will, each time it intends to effect such a registration, give
     written notice to all Holders of Registrable Securities at least ten but no
     more than 45 days prior to the expected initial filing of a Registration
     Statement with the SEC pertaining thereto, informing such Holders of its
     intent to file such Registration Statement, the expected filing date, and
     of the Holders' rights to request the registration of the Registrable
     Securities held by the Holders under this Section 2(b) (the "Company
     Notice"). Upon the written request of any Holder made within ten days after
     any such Company Notice is given (which request shall specify the
     Registrable Securities intended to be disposed of by such Holder and such
     Holder's Permitted Transferees and the intended method of distribution
     thereof), the Company will use all reasonable efforts to effect the
     registration under the Securities Act of all Registrable Securities which
     the Company has been so requested to register by such Holders to the extent
     required to permit the disposition (in accordance with the intended methods
     of distribution thereof) of the Registrable Securities so requested to be
     registered, including, if necessary, by filing with the SEC a
     post-effective amendment or a supplement to the Incidental Registration
     Statement or the related Prospectus or any document incorporated therein by
     reference or by filing any other required document or otherwise
     supplementing or amending the Incidental Registration Statement, if
     required by the rules, regulations or instructions applicable to the
     registration form used by the Company for such Incidental Registration
     Statement or by the Securities Act, any state securities or blue sky laws,
     or any rules and regulations thereunder; provided, however, that if, at any
     time after giving written notice of its intention to register any
     securities and prior to the effective date of the Incidental Registration
     Statement filed in connection with such registration, the Company shall
     determine for any reason not to register or to delay registration of such
     securities, the Company may, at its election, give written notice of such
     determination to each Holder of Registrable Securities and, thereupon, (A)
     in the case of a determination not to register, the Company shall be
     relieved of its obligation to register any Registrable Securities in
     connection with such registration (but not from its obligation to pay the
     Registration Expenses incurred in connection therewith), and (B) in the
     case of a determination to delay such registration, the Company shall be
     permitted to delay registration of any Registrable Securities requested to
     be included in such Incidental Registration Statement for the same period
     as the delay in registering such other securities.

                                       8

          The registration rights granted pursuant to the provisions of this
     Section 2(b)(i) shall be in addition to the registration rights granted
     pursuant to the other provisions of this Section.

         (ii) Priority in Incidental Registrations. If a registration pursuant
     to this Section 2(b) involves an Underwritten Offering of the securities so
     being registered, whether or not for sale for the account of the Company,
     and the sole Underwriter or the lead managing Underwriter, as the case may
     be, of such Underwritten Offering shall advise the Company in writing (with
     a copy to each Holder of Registrable Securities requesting registration) on
     or before the date five days prior to the date of pricing of for such
     offering that, in its opinion, the amount of securities (including
     Registrable Securities) requested to be included in such registration
     exceeds the amount which can be sold in (or during the time of) such
     offering without adversely affecting the distribution of the securities
     being offered, then the Company will be required to include in such
     registration, first, all the securities entitled to be sold pursuant to
     such Registration Statement by the Company; second all Registrable
     Securities requested to be included in the Underwritten Offering by the
     Investor Members and, to the extent not all such Registrable Securities can
     be included in such Underwritten Offering, the number of Registrable
     Securities to be included shall be allocated pro rata on the basis of the
     number of Registrable Securities requested to be included by all the
     Investor Members requesting to participate in the Underwritten Offering or
     on such other basis as shall be agreed among such Investor Members; third,
     all Registrable Securities requested to be included in such Underwritten
     Offering by the other Holders and, to the extent not all such Registrable
     Securities can be included in such Underwritten Offering, the number of
     Registrable Securities to be included shall be allocated pro rata on the
     basis of the number of Registrable Securities requested to be included in
     such Underwritten Offering by all such Holders and fourth, all other
     securities requested, in accordance with any registration rights which are
     granted in compliance with Section 6(a), to be included in such
     Underwritten Offering which are of the same class as the Registrable
     Securities and, to the extent not all such securities can be included in
     such Underwritten Offering, the number of securities to be included shall
     be allocated pro rata among the remaining holders thereof requesting
     inclusion in such Underwritten Offering on the basis of the number of
     securities requested to be included in such Underwritten Offering by all
     such holders; provided, however, that in the event the Company will not, by
     virtue of this paragraph, include in any such registration all of the
     Registrable Securities of any Holder requested to be included in such
     registration, such Holder may, upon written notice to the Company given
     within three days of the time such Holder first is notified of such matter,
     reduce the amount of Registrable Securities it desires to have included in
     such registration, whereupon only the Registrable Securities, if any, it
     desires to have included will be so included and the Holders not so
     reducing shall be entitled to a corresponding increase in the amount of
     Registrable Securities to be included in such registration.

    (c)  Expenses. The Company agrees to (i) pay all Registration Expenses in
connection with each of the registrations requested pursuant to Section 2(a) and
(ii) pay all Registration Expenses in connection with each registration as to
which Holders request inclusion of Registrable Securities pursuant to Section
2(b). All Selling Expenses relating to securities

                                       9

registered on behalf of Holders shall be borne by the Holders of securities
included in such registration pro rata on the basis of the number of shares of
securities so registered.

    (d)  Effective Registration Statement; Suspension. Subject to Section
2(a)(i)(D), a Registration Statement pursuant to Section 2(a) will not be deemed
to have become effective (and the related registration will not be deemed to
have been effected) unless it has been declared effective by the SEC or in the
case of a Required Shelf Registration Statement unless Registrable Securities
have been disposed of pursuant thereto, prior to a request by the Holders of a
majority of the Registrable Securities included in such registration that such
Registration Statement be withdrawn; provided, however, that if, after it has
been declared effective, the offering of any Registrable Securities pursuant to
such Registration Statement is interfered with by any stop order, injunction or
other order or requirement of the SEC or any other governmental agency or court,
such Registration Statement will be deemed not to have become effective and the
related registration will not be deemed to have been effected.

    (e)  Selection of Underwriters. At any time or from time to time, the
Holders of a majority of the Registrable Securities covered by a Required
Registration Statement may elect to have such Registrable Securities sold in an
Underwritten Offering and may select the investment banker or investment bankers
and manager or managers that will serve as lead and co-managing Underwriters
with respect to the offering of such Registrable Securities, subject to the
consent of the Company which shall not be unreasonably withheld. No Holder may
participate in any Underwritten Offering hereunder unless such Holder (a) agrees
to sell such Holder's securities on the basis provided in any underwriting
arrangements approved by the Persons entitled hereunder to approve such
arrangements and (b) completes and executes all questionnaires, powers of
attorney, custody agreements, indemnities, underwriting agreements and other
documents required under the terms of such Underwritten Offering.

                     SECTION 3. RESTRICTIONS ON PUBLIC SALE.

    (a)  If requested by the sole Underwriter or lead managing Underwriter(s) in
an Underwritten Offering, the Company agrees not to effect any public sale or
distribution (other than, in the case of the Company, public sales or
distributions solely by and for the account of the Company of securities issued
pursuant to any employee benefit or similar plan or any dividend reinvestment
plan) of any equity or equity-linked securities during the period commencing on
the date the Company receives a Request from any Holder and continuing until 180
days after the commencement of any Initial Public Offering, Qualified IPO or
other Underwritten Offering (or for such shorter period as the sole or lead
managing Underwriter shall request) unless earlier terminated by the sole
Underwriter or lead managing Underwriter(s) in such Underwritten Offering.

    (b)  If requested by the sole Underwriter or lead managing Underwriter(s) in
an Underwritten Offering, the Holders shall not sell or otherwise transfer or
dispose of any Units (or other securities) of the Company held by the Holders
(other than those included in the registration) during the fourteen (14) day
period prior to and the one hundred eighty (180) day period following the
effective date (including such effective date), of an Initial Public Offering,
Qualified IPO (including such effective date) or any other offering, or in the
case of a registration pursuant to Rule 415 of the Securities Act (or any
similar rule then in force), the 180

                                       10

day period following the date of any underwritten take-down, or in either case
such shorter period as the sole Underwriter or lead managing Underwriter(s) may
request, of a registration statement of the Company filed under the Securities
Act, provided that the obligations described in this Section 3(b) shall not
apply to a registration relating solely to the sale of securities to employees
of the Company pursuant to a stock option, stock purchase or similar plan or
Rule 145 (or any similar rule then in force) or similar transaction. The Company
may impose stop-transfer instructions with respect to the Units (or other
securities) subject to the foregoing restriction until the end of said one
hundred eighty (180) day period. Any agreement entered into after the date of
this Agreement pursuant to which the Company issues or agrees to issue any
privately placed Units or other securities shall contain a provision under which
holders of such securities agree not to effect any sale or distribution of any
such securities during the period referred to in the first sentence of this
Section 3(b), including any sale pursuant to Rule 144 under the Securities Act
(or any similar rule then in force) (except as part of such registration, if
permitted).

                      SECTION 4. REGISTRATION PROCEDURES.

         In connection with the obligations of the Company pursuant to Section
2, the Company shall use all reasonable efforts to effect or cause to be
effected the registration of the Registrable Securities under the Securities Act
to permit the sale of such Registrable Securities by the Holders in accordance
with their intended method or methods of distribution, and the Company shall:

         (a)  (i) prepare and file a Registration Statement with the SEC which
(x) shall be on Form S-1 (if in connection with an Initial Public Offering) and
otherwise on Form S-3 (or any successor to such form), if available, (y) shall
be available for the sale or exchange of the Registrable Securities in
accordance with the intended method or methods of distribution by the selling
Holders thereof, and (z) shall comply as to form with the requirements of the
applicable form and include all financial statements required by the SEC to be
filed therewith and all other information reasonably requested by the lead
managing Underwriter or sole Underwriter, if applicable, to be included therein,
(ii) use all reasonable efforts to cause such Registration Statement to become
effective and remain effective in accordance with Section 2, (iii) use all
reasonable efforts to not take any action that would cause a Registration
Statement to contain a material misstatement or omission or to be not effective
and usable for resale of Registrable Securities during the period that such
Registration Statement is required to be effective and usable, and (iv) cause
each Registration Statement and the related Prospectus and any amendment or
supplement thereto, as of the effective date of such Registration Statement,
amendment or supplement (x) to comply in all material respects with any
requirements of the Securities Act and the rules and regulations of the SEC and
(y) not to contain any untrue statement of a material fact or omit to state a
material fact required to be stated therein or necessary to make the statements
therein not misleading;

         (b) subject to paragraph (j) of this Section 4, prepare and file with
the SEC such amendments and post-effective amendments to each such Registration
Statement, as may be necessary to keep such Registration Statement effective for
the applicable period; cause each such Prospectus to be supplemented by any
required prospectus supplement, and as so supplemented to be filed pursuant to
Rule 424 under the Securities Act (or any similar rule

                                       11

then in force); and comply with the provisions of the Securities Act with
respect to the disposition of all securities covered by each Registration
Statement during the applicable period in accordance with the intended method or
methods of distribution by the selling Holders thereof, as set forth in such
registration statement;

         (c)  furnish to each Holder of Registrable Securities and to each
Underwriter of an Underwritten Offering of Registrable Securities, if any,
without charge, as many copies of each Prospectus, including each preliminary
Prospectus, and any amendment or supplement thereto and such other documents as
such Holder or Underwriter may reasonably request in order to facilitate the
public sale or other disposition of the Registrable Securities; the Company
hereby consents to the use of the Prospectus, including each preliminary
Prospectus, by each Holder of Registrable Securities and each Underwriter of an
Underwritten Offering of Registrable Securities, if any, in connection with the
offering and sale of the Registrable Securities covered by the Prospectus or the
preliminary Prospectus;

         (d)  (i) use all reasonable efforts to register or qualify the
Registrable Securities, no later than the time the applicable Registration
Statement is declared effective by the SEC, under all applicable state
securities or "blue sky" laws of such jurisdictions as each Underwriter, if any,
or any Holder of Registrable Securities covered by a Registration Statement,
shall reasonably request; (ii) use all reasonable efforts to keep each such
registration or qualification effective during the period such Registration
Statement is required to be kept effective; and (iii) do any and all other acts
and things which may be reasonably necessary or advisable to enable each such
Underwriter, if any, and Holder to consummate the disposition in each such
jurisdiction of such Registrable Securities owned by such Holder; provided,
however, that the Company shall not be obligated to qualify as a foreign
corporation or as a dealer in securities in any jurisdiction in which it is not
so qualified or to consent to be subject to general service of process (other
than service of process in connection with such registration or qualification or
any sale of Registrable Securities in connection therewith) in any such
jurisdiction;

         (e)  notify each Holder of Registrable Securities promptly, and, if
requested by such Holder, confirm such advice in writing, (i) when a
Registration Statement has become effective and when any post-effective
amendments and supplements thereto become effective, (ii) of the issuance by the
SEC or any state securities authority of any stop order, injunction or other
order or requirement suspending the effectiveness of a Registration Statement or
the initiation of any proceedings for that purpose, (iii) if, between the
effective date of a Registration Statement and the closing of any sale of
securities covered thereby pursuant to any agreement to which the Company is a
party, the representations and warranties of the Company contained in such
agreement cease to be true and correct in all material respects or if the
Company receives any notification with respect to the suspension of the
qualification of the Registrable Securities for sale in any jurisdiction or the
initiation of any proceeding for such purpose, and (iv) of the happening of any
event during the period a Registration Statement is effective as a result of
which such Registration Statement or the related Prospectus contains any untrue
statement of a material fact or omits to state any material fact required to be
stated therein or necessary to make the statements therein not misleading;

                                       12

         (f)  furnish counsel for each such Underwriter, if any, and for the
Holders of Registrable Securities copies of any request by the SEC or any state
securities authority for amendments or supplements to a Registration Statement
and Prospectus or for additional information;

         (g)  use all reasonable efforts to obtain the withdrawal of any order
suspending the effectiveness of a Registration Statement at the earliest
possible time;

         (h)  upon request, furnish to the sole Underwriter or lead managing
Underwriter of an Underwritten Offering of Registrable Securities, if any,
without charge, at least one signed copy of each Registration Statement and any
post-effective amendment thereto, including financial statements and schedules,
all documents incorporated therein by reference and all exhibits; and furnish to
each Holder of Registrable Securities, without charge, at least one conformed
copy of each Registration Statement and any post-effective amendment thereto
(without documents incorporated therein by reference or exhibits thereto, unless
requested);

         (i)  cooperate with the selling Holders of Registrable Securities and
the sole Underwriter or lead managing Underwriter of an Underwritten Offering of
Registrable Securities, if any, to facilitate the timely preparation and
delivery of certificates representing Registrable Securities to be sold and not
bearing any restrictive legends; and enable such Registrable Securities to be in
such denominations (consistent with the provisions of the governing documents
thereof) and registered in such names as the selling Holders or the sole
Underwriter or lead managing Underwriter of an Underwritten Offering of
Registrable Securities, if any, may reasonably request at least five days prior
to any sale of Registrable Securities;

         (j)  upon the occurrence of any event contemplated by paragraph (e)(iv)
of this Section, use all reasonable efforts to prepare a supplement or
post-effective amendment to a Registration Statement or the related Prospectus,
or any document incorporated therein by reference, or file any other required
document so that, as thereafter delivered to the purchasers of the Registrable
Securities, such Prospectus will not contain any untrue statement of a material
fact or omit to state a material fact required to be stated therein or necessary
to make the statements therein, in the light of the circumstances under which
they were made, not misleading;

         (k)  enter into customary agreements (including, in the case of an
Underwritten Offering, underwriting agreements in customary form, and including
provisions with respect to indemnification and contribution in customary form
and consistent with the provisions relating to indemnification and contribution
contained herein) and take all other customary and appropriate actions in order
to expedite or facilitate the disposition of such Registrable Securities and in
connection therewith:

              (1)  make such representations and warranties to the Holders of
         such Registrable Securities and the Underwriters, if any, in form,
         substance and scope as are customarily made by issuers to underwriters
         in similar underwritten offerings;

                                       13

              (2)  obtain opinions of counsel to the Company and updates thereof
         (which counsel and opinions (in form, scope and substance) shall be
         reasonably satisfactory to the lead managing Underwriter, if any, and
         the Majority Holders of the Registrable Securities being sold)
         addressed to each selling Holder and the Underwriters, if any, covering
         the matters customarily covered in opinions requested in sales of
         securities or underwritten offerings and such other matters as may be
         reasonably requested by such Holders and Underwriters;

              (3)  obtain "cold comfort" letters and updates thereof from the
         Company's independent certified public accountants addressed to the
         selling Holders of Registrable Securities, if permissible, and the
         Underwriters, if any, which letters shall be customary in form and
         shall cover matters of the type customarily covered in "cold comfort"
         letters to underwriters in connection with primary underwritten
         offerings;

              (4)  to the extent requested and customary for the relevant
         transaction, enter into a securities sales agreement with the Holders
         providing for, among other things, the appointment of such
         representative as agent for the selling Holders for the purpose of
         soliciting purchases of Registrable Securities, which agreement shall
         be customary in form, substance and scope and shall contain customary
         representations, warranties and covenants; and

              (5)  deliver such customary documents and certificates as may be
         reasonably requested by the Majority Holders of the Registrable
         Securities being sold or by the managing Underwriters, if any.

The above shall be done (i) at the effectiveness of such Registration Statement
(and each post-effective amendment thereto) in connection with any registration,
and (ii) at each closing under any underwriting or similar agreement as and to
the extent required thereunder;

         (l)  make available for inspection by representatives of the Holders of
the Registrable Securities and any Underwriters participating in any disposition
pursuant to a Registration Statement and any counsel or accountant retained by
such Holders or Underwriters, all relevant financial and other records,
pertinent corporate documents and properties of the Company and cause the
respective officers, managers and employees of the Company to supply all
information reasonably requested by any such representative, Underwriter,
counsel or accountant in connection with a Registration Statement;

         (m)  (i) within a reasonable time prior to the filing of any
Registration Statement, any Prospectus, any amendment to a Registration
Statement or amendment or supplement to a Prospectus, provide copies of such
document to the Holders of Registrable Securities and to counsel to such Holders
and to the Underwriter or Underwriters of an Underwritten Offering of
Registrable Securities, if any; fairly consider such reasonable changes in any
such document prior to or after the filing thereof as the counsel to the Holders
or the Underwriter or the Underwriters may request and not file any such
document in a form to which the Majority Holders of Registrable Securities being
registered or any Underwriter shall reasonably object; and make such of the
representatives of the Company as shall be reasonably

                                       14

requested by the Holders of Registrable Securities being registered or any
Underwriter available for discussion of such document;

              (ii) within a reasonable time prior to the filing of any document
         which is to be incorporated by reference into a Registration Statement
         or a Prospectus, provide copies of such document to counsel for the
         Holders; fairly consider such reasonable changes in such document prior
         to or after the filing thereof as counsel for such Holders or such
         Underwriter shall request; and make such of the representatives of the
         Company as shall be reasonably requested by such counsel available for
         discussion of such document;

         (n)  cause all Registrable Securities to be qualified for inclusion in
or listed on The New York Stock Exchange or any securities exchange or the
NASDAQ National Market on which securities of the same class issued by the
Company are then so qualified or listed if so requested by the Majority Holders
of Registrable Securities covered by a Registration Statement, or if so
requested by the Underwriter or Underwriters of an Underwritten Offering of
Registrable Securities, if any;

         (o)  otherwise use all reasonable efforts to comply with all applicable
rules and regulations of the SEC, including making available to its security
holders an earnings statement covering at least 12 months which shall satisfy
the provisions of Section 11(a) of the Securities Act and Rule 158 thereunder
(or any similar provision then in force);

         (p)  cooperate and assist in any filings required to be made with the
NASD and in the performance of any due diligence investigation by any
Underwriter in an Underwritten Offering; and

         (q)  use all reasonable efforts to facilitate the distribution and sale
of any Registrable Securities to be offered pursuant to this Agreement,
including without limitation by making road show presentations, holding meetings
with potential investors and taking such other actions as shall be requested by
the Majority Holders of Registrable Securities covered by a Registration
Statement or the lead managing Underwriter of an Underwritten Offering; provided
that the Company shall not be required to make road show presentations in
connection with any Underwritten Offering of Registrable Securities that would
not reasonably be expected to have gross proceeds of at least $50 million.

         Each selling Holder of Registrable Securities as to which any
registration is being effected pursuant to this Agreement agrees, as a condition
to the registration obligations with respect to such Holder provided herein, to
furnish to the Company such information regarding such Holder required to be
included in the Registration Statement, the ownership of Registrable Securities
by such Holder and the proposed distribution by such Holder of such Registrable
Securities as the Company may from time to time reasonably request in writing.

         Each Holder agrees that, upon receipt of any notice from the Company of
the happening of any event of the kind described in paragraph (e)(iv) of this
Section, such Holder will forthwith discontinue disposition of Registrable
Securities pursuant to the affected Registration Statement until such Holder's
receipt of the copies of the supplemented or amended

                                       15

Prospectus, contemplated by paragraph (j) of this Section, and, if so directed
by the Company, such Holder will deliver to the Company (at the expense of the
Company), all copies in its possession, other than permanent file copies then in
such Holder's possession, of the Prospectus covering such Registrable Securities
which was current at the time of receipt of such notice.

                   SECTION 5. INDEMNIFICATION; CONTRIBUTION.

         (a) Indemnification by the Company. The Company agrees to indemnify and
hold harmless each Person who participates as an underwriter (any such Person
being an "Underwriter"), each Investor Group, Holder and their respective
partners, managers, officers and employees and each Person, if any, who controls
any Investor Group, Holder or Underwriter within the meaning of Section 15 of
the Securities Act or Section 20 of the Exchange Act as follows:

              (i)  against any and all losses, liabilities, claims, damages,
         judgments and reasonable expenses whatsoever, as incurred, arising out
         of any untrue statement or alleged untrue statement of a material fact
         contained in any Registration Statement pursuant to which Registrable
         Securities were registered under the Securities Act, including all
         documents incorporated therein by reference, or the omission or alleged
         omission therefrom of a material fact required to be stated therein or
         necessary to make the statements therein not misleading or arising out
         of any untrue statement or alleged untrue statement of a material fact
         contained in any Prospectus, including all documents incorporated
         therein by reference, or the omission or alleged omission therefrom of
         a material fact necessary in order to make the statements therein, in
         the light of the circumstances under which they were made, not
         misleading;

              (ii) against any and all losses, liabilities, claims, damages,
         judgments and reasonable expenses whatsoever, as incurred, to the
         extent of the aggregate amount paid in settlement of any litigation,
         investigation or proceeding by any governmental agency or body,
         commenced or threatened, or of any other claim whatsoever based upon
         any such untrue statement or omission, or any such alleged untrue
         statement or omission, if such settlement is effected with the written
         consent of the Company; and

              (iii) against any and all reasonable expense whatsoever (including
         fees and disbursements of counsel), as incurred in investigating,
         preparing or defending against any litigation, investigation or
         proceeding by any governmental agency or body, commenced or threatened,
         in each case whether or not such Person is a party, or any claim
         whatsoever based upon any such untrue statement or omission, or any
         such alleged untrue statement or omission, to the extent that any such
         expense is not paid under sub-paragraph (i) or (ii) above;

provided, however, that this indemnity agreement does not apply to any Investor
Group, Holder or Underwriter with respect to any loss, liability, claim, damage,
judgment or expense to the extent arising out of any untrue statement or alleged
untrue statement of a material fact contained in any Prospectus, or the omission
or alleged omission therefrom of a material fact necessary to make the
statements therein, in the light of the circumstances under which they were
made, not misleading, in any such case made in reliance upon and in conformity
with written information

                                       16

furnished to the Company by such Investor Group, Holder or Underwriter expressly
for use in a Registration Statement (or any amendment thereto) or any Prospectus
(or any amendment or supplement thereto); provided, further, that the Company
shall not be liable to any Holder with respect to any preliminary prospectus to
the extent that any such loss, liability, claim, damage, cost or expense results
from the fact that such Holder sold Registrable Securities to a Person to whom
there was not sent or given, at or prior to the written confirmation of such
sale, a copy of the final prospectus if the Company has previously and timely
furnished copies thereof to such Holder and if such final prospectus would have
corrected such untrue statement or omission. Such indemnity shall remain in full
force and effect regardless of any investigation made by or on behalf of any
Holder Indemnified Party and shall survive the Transfer of such securities by
any Holder.

         (b)  Indemnification by Holders. Each selling Holder severally agrees
to indemnify and hold harmless the Company, each Underwriter and the other
selling Holders and Investor Groups, and each of their respective partners,
managers, officers and employees (including each officer of the Company who
signed the Registration Statement), and each Person, if any, who controls the
Company, any Underwriter or any other selling Holder or Investor Group within
the meaning of Section 15 of the Securities Act, against any and all losses,
liabilities, claims, damages, judgments and expenses described in the indemnity
contained in paragraph (a) of this Section (provided that any settlement of the
type described therein is effected with the written consent of such selling
Holder), as incurred, but only with respect to untrue statements or alleged
untrue statements of a material fact contained in any Prospectus or the
omissions, or alleged omissions therefrom of a material fact necessary to make
the statements therein, in the light of the circumstances under which they were
made, not misleading, in any such case made in reliance upon and in conformity
with written information furnished to the Company by such selling Holder
expressly for use in such Registration Statement (or any amendment thereto) or
such Prospectus (or any amendment or supplement thereto).

         (c)  Conduct of Indemnification Proceedings. Each indemnified party or
parties shall give reasonably prompt notice to each indemnifying party or
parties of any action or proceeding commenced against it in respect of which
indemnity may be sought hereunder, but failure so to notify an indemnifying
party or parties shall not relieve it or them from any liability which it or
they may have under this indemnity agreement, except to the extent that the
indemnifying party is materially prejudiced by such failure to give notice. If
the indemnifying party or parties so elects within a reasonable time after
receipt of such notice, the indemnifying party or parties may assume the defense
of such action or proceeding at such indemnifying party's or parties' expense
with counsel chosen by the indemnifying party or parties and approved by the
indemnified party defendant in such action or proceeding, which approval shall
not be unreasonably withheld; provided, however, that, if such indemnified party
or parties determine in good faith that a conflict of interest exists and that
therefore it is advisable for such indemnified party or parties to be
represented by separate counsel or that, upon advice of counsel, there may be
legal defenses available to it or them which are different from or in addition
to those available to the indemnifying party, then the indemnifying party or
parties shall not be entitled to assume such defense and the indemnified party
or parties shall be entitled to separate counsel (limited in each jurisdiction
to one counsel for all Underwriters and another counsel for all other
indemnified parties under this Agreement) at the indemnifying party's or
parties' expense. If an indemnifying party or parties is or are not so entitled
to assume the

                                       17

defense of such action or does or do not assume such defense, after having
received the notice referred to in the first sentence of this paragraph, the
indemnifying party or parties will pay the reasonable fees and expenses of
counsel for the indemnified party or parties (limited in each jurisdiction to
one counsel for all Underwriters and another counsel for all other indemnified
parties under this Agreement). No indemnifying party or parties will be liable
for any settlement effected without the written consent of such indemnifying
party or parties, which consent shall not be unreasonably withheld. If an
indemnifying party is entitled to assume, and assumes, the defense of such
action or proceeding in accordance with this paragraph, such indemnifying party
or parties shall not be liable for any fees and expenses of counsel for the
indemnified parties incurred thereafter in connection with such action or
proceeding.

         (d)  Contribution. (i) In order to provide for just and equitable
contribution in circumstances in which the indemnity agreement provided for in
this Section is for any reason held to be unenforceable by the indemnified
parties although applicable in accordance with its terms in respect of any
losses, liabilities, claims, damages, judgments and expenses suffered by an
indemnified party referred to therein, each applicable indemnifying party, in
lieu of indemnifying such indemnified party, shall contribute to the amount paid
or payable by such indemnified party as a result of such losses, liabilities,
claims, damages, judgments and expenses in such proportion as is appropriate to
reflect the relative fault of the Company on the one hand and of the liable
selling Holders (including, in each case, that of their respective officers,
managers, employees and agents) on the other in connection with the statements
or omissions which resulted in such losses, liabilities, claims, damages,
judgments or expenses, as well as any other relevant equitable considerations.
The relative fault of the Company on the one hand and of the liable selling
Holders (including, in each case, that of their respective officers, managers,
employees and agents) on the other shall be determined by reference to, among
other things, whether the untrue or alleged untrue statement of a material fact
or the omission or alleged omission to state a material fact relates to
information supplied by the Company, on the one hand, or by or on behalf of the
selling Holders, on the other, and the parties' relative intent, knowledge,
access to information and opportunity to correct or prevent such statement or
omission. The amount paid or payable by a party as a result of the losses,
liabilities, claims, damages, judgments and expenses referred to above shall be
deemed to include, subject to the limitations set forth in paragraph (c) of this
Section, any legal or other fees or expenses reasonably incurred by such party
in connection with investigating or defending any action or claim.

              (ii) The Company and each Holder of Registrable Securities agree
         that it would not be just and equitable if contribution pursuant to
         this paragraph (d) were determined by pro rata allocation or by any
         other method of allocation which does not take account of the equitable
         considerations referred to in sub-paragraph (i) above. Notwithstanding
         the provisions of this paragraph (d), in the case of distributions to
         the public, an indemnifying Holder shall not be required to contribute
         any amount in excess of the amount by which (A) the total price at
         which the Registrable Securities sold by such indemnifying Holder and
         its affiliated indemnifying Holders and distributed to the public were
         offered to the public exceeds (B) the amount of any damages which such
         indemnifying Holder has otherwise been required to pay by reason of
         such untrue or alleged untrue statement or omission or alleged
         omission. No Person guilty of fraudulent misrepresentation (within the
         meaning of Section 11(f) of the Securities Act) shall be

                                       18

         entitled to contribution from any Person who was not guilty of such
         fraudulent misrepresentation.

              (iii) For purposes of this Section, each Person, if any, who
         controls a Holder, Investor Group or an Underwriter within the meaning
         of Section 15 of the Securities Act (and their respective partners,
         managers, officers and employees) shall have the same rights to
         contribution as such Holder, Investor Group or Underwriter; and each
         manager of the Company, each officer of the Company who signed the
         Registration Statement, and each Person, if any, who controls the
         Company within the meaning of Section 15 of the Securities Act, shall
         have the same rights to contribution as the Company.

                           SECTION 6. MISCELLANEOUS.

         (a)  No Inconsistent Agreements. The Company will not on or after the
date of this Agreement enter into any agreement which conflicts with the
provisions of this Agreement or which grants registration or similar rights
without the prior written consent of the Sponsor Members, nor has the Company
entered into any such agreement. The rights granted to the Holders hereunder do
not in any way conflict with and are not inconsistent with the rights granted to
the holders of the Company's other issued and outstanding securities under any
such agreements.

         (b)  Amendments and Waivers. The provisions of this Agreement,
including the provisions of this sentence, may not be amended, modified or
supplemented, and waivers or consents to departures from the provisions hereof
may not be given unless the Company has obtained the prior written consent of
the Sponsor Members, by the Holders of a majority of the Registrable Securities,
and, if any such amendment, modification, supplement, waiver or consent would
materially adversely affect the rights of any Holder hereunder in a different
manner or degree than would affect the rights of all Holders, the written
consent of each such adversely affected Holder shall be obtained; provided,
however, that nothing herein shall prohibit any amendment, modification,
supplement, waiver or consent the effect of which is limited only to those
Holders who have agreed to such amendment, modification, supplement, waiver or
consent.

         (c)  Investor Action. Any action which requires the approval of an
Investor Group shall only be effective if approved by Investors beneficially
holding a majority of the Registrable Securities held by all members of such
Investor Group.

                                       19

         (d) Notices. Any notice, demand, request, waiver, or other
communication under this Agreement shall be personally served in writing, shall
be deemed to have been given on the date of service, and shall be addressed as
follows:

                  TO THE COMPANY:      Foundation Coal Holdings, LLC
                                       999 Corporate Boulevard
                                       Linthicum Heights, Maryland 21090
                                       Attention:
                                       Fax:

                  With copies to:      The Blackstone Group
                                       345 Park Avenue, 31st Floor
                                       New York, NY 10154
                                       Attention: David Foley
                                       Fax: (212) 583-5712

                                       First Reserve Corporation
                                       One Lafayette Place
                                       Greenwich, CT 06830
                                       Attention: Alex Krueger
                                       Fax: (203) 661-6729

                                       Simpson Thacher & Bartlett LLP
                                       425 Lexington Avenue
                                       New York, NY  10017
                                       Attention: David Lieberman
                                       Fax: (212) 455-2502

                                       Bartlit Beck Herman Palenchar & Scott LLP
                                       1899 Wynkoop Street, Suite 800
                                       Denver, CO 80202
                                       Attention: James L. Palenchar
                                       Fax: (303) 592-3140

    TO BLACKSTONE INVESTOR GROUP:      The Blackstone Group
                                       345 Park Avenue, 31st Floor
                                       New York, NY 10154
                                       Attention: David Foley
                                       Fax: (212) 583-5712

                  With a copy to:      Simpson Thacher & Bartlett LLP
                                       425 Lexington Avenue
                                       New York, NY  10017
                                       Attention: David Lieberman
                                       Fax: (212) 455-2502

           TO FRC INVESTOR GROUP:      First Reserve Corporation
                                       One Lafayette Place

                                       20

                                       Greenwich, CT 06830
                                       Attention: Alex Krueger
                                       Fax: (203) 661-6729

                  With a copy to:      Bartlit Beck Herman Palenchar & Scott LLP
                                       1899 Wynkoop Street, Suite 800
                                       Denver, CO 80202
                                       Attention: James L. Palenchar
                                       Fax: (303) 592-3140

          TO AMCI INVESTOR GROUP:      AMCI Acquisition, LLC
                                       475 Steamboat Road
                                       Greenwich, CT 06830
                                       Attention:  Hans Mende
                                       Fax:  (203) 625-9231

                  With a copy to:      McGuireWoods LLP
                                       One James Center
                                       901 East Cary Street
                                       Richmond, VA 23219
                                       Attention:  Leslie A. Grandis
                                       Fax: (804) 698-2069

                   TO ANY OTHER MEMBER At the address set forth on the attached
                                       signature page.

         (e)  Successors and Assigns. This Agreement shall inure to the benefit
of and be binding upon the successors, assigns and transferees of each of the
parties, including, without the need for an express assignment, subsequent
Holders. If any successor, assignee or transferee of any Holder shall acquire
Registrable Securities in any manner, whether by operation of law or otherwise,
such Registrable Securities shall be held subject to all of the terms of this
Agreement, and by taking and holding such Registrable Securities such Person
shall be conclusively deemed to have agreed to be bound by and to perform all of
the terms and provisions of this Agreement. For purposes of this Agreement,
"successor" for any entity other than a natural person shall mean a successor to
such entity as a result of such entity's merger, consolidation, liquidation,
dissolution, sale of substantially all of its assets, or similar transaction.

         (f)  Recapitalizations, Exchanges, etc., Affecting Registrable
Securities. The provisions of this Agreement shall apply, to the full extent set
forth herein with respect to the Registrable Securities, to any and all
securities or capital stock of the Company or any successor or assign of the
Company (whether by merger, consolidation, sale of assets or otherwise,
including any Solvent Reorganization) which may be issued in respect of, in
exchange for, or in substitution of such Registrable Securities, by reason of
any dividend, split, issuance, reverse split, combination, recapitalization,
reclassification, merger, consolidation or otherwise.

                                       21

         (g)  Counterparts. This Agreement may be executed in two or more
counterparts, each of which, when so executed and delivered, shall be deemed to
be an original, but all of which counterparts, taken together, shall constitute
one and the same instrument.

         (h)  Descriptive Headings, Etc. The headings in this Agreement are for
convenience of reference only and shall not limit or otherwise affect the
meaning of terms contained herein. Unless the context of this Agreement
otherwise requires: (1) words of any gender shall be deemed to include each
other gender; (2) words using the singular or plural number shall also include
the plural or singular number, respectively; (3) the words "hereof", "herein"
and "hereunder" and words of similar import when used in this Agreement shall
refer to this Agreement as a whole and not to any particular provision of this
Agreement, and Article, Section and paragraph references are to the Articles,
Sections and paragraphs to this Agreement unless otherwise specified; (4) the
word "including" and words of similar import when used in this Agreement shall
mean "including, without limitation," unless otherwise specified; (5) "or" is
not exclusive; and (6) provisions apply to successive events and transactions.

         (i)  Severability. In the event that any one or more of the provisions,
paragraphs, words, clauses, phrases or sentences contained herein, or the
application thereof in any circumstances, is held invalid, illegal or
unenforceable in any respect for any reason, the validity, legality and
enforceability of any such provision, paragraph, word, clause, phrase or
sentence in every other respect and of the other remaining provisions,
paragraphs, words, clauses, phrases or sentences hereof shall not be in any way
impaired, it being intended that all rights, powers and privileges of the
parties hereto shall be enforceable to the fullest extent permitted by law.

         (j)  Governing Law. THIS AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE
WITH, AND GOVERNED BY, THE LAWS OF THE STATE OF DELAWARE WITHOUT REGARD TO
CONFLICTS OF LAWS PRINCIPLES WHICH WOULD RESULT IN THE APPLICATION OF THE LAWS
OF ANOTHER JURISDICTION.

         (k)  Specific Performance. The parties hereto acknowledge that there
would be no adequate remedy at law if any party fails to perform in any material
respect any of its obligations hereunder, and accordingly agree that each party,
in addition to any other remedy to which it may be entitled at law or in equity,
shall be entitled to compel specific performance of the obligations of any other
party under this Agreement in accordance with the terms and conditions of this
Agreement.

                                       22

         (l)  Arbitration. Any dispute, controversy or claim arising out of or
relating to this Agreement or the Registration Rights Agreement (a "Dispute"),
shall be settled by binding arbitration in accordance with the commercial
arbitration rules of the Center for Public Resources. Any such Dispute shall be
consolidated, to the extent practicable, in any arbitration with any dispute,
claim or controversy of any other Member unless the arbitrator decides that such
consolidation cannot occur. The arbitration shall be conducted in New York City,
New York, and any court having jurisdiction thereof may be immediately issue
judgment on the arbitration award. The Members agree that the arbitration
provided for in this Section 6(l) shall be the exclusive means to resolve all
Disputes.

         (m)  Entire Agreement. This Agreement is intended by the parties as a
final expression of their agreement and intended to be a complete and exclusive
statement of the agreement and understanding of the parties hereto in respect of
the subject matter contained herein. This Agreement supersedes all prior
agreements and understandings between the Company, on the one hand, and the
other parties to this Agreement, on the other, with respect to such subject
matter.

                                      * * *

                                       23

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

                          FOUNDATION COAL HOLDINGS, LLC

                          By:
                             -----------------------------------------
                             Name:
                             Title:

                          FIRST RESERVE FUND IX, L.P.

                            By: First Reserve GP IX, L.P., its General Partner

                              By: First Reserve GP IX, Inc., its General Partner

                                 By:
                                    --------------------------------------------
                                    Name:
                                    Title:

                [Signature Page to Registration Rights Agreement]

                          BLACKSTONE FCH CAPITAL PARTNERS IV L.P.

                              By:  Blackstone Management Associates IV
                                   L.L.C., its General Partner

                                   By:
                                      ------------------------------------------
                                      Name:
                                      Title:

                          BLACKSTONE FAMILY INVESTMENT PARTNERSHIP IV-A L.P.

                              By:  Blackstone Management Associates IV
                                   L.L.C., its General Partner

                                   By:
                                      ------------------------------------------
                                      Name:
                                      Title:

               [Signature Page to Registration Rights Agreement]

                               MANAGEMENT MEMBERS:
                               -------------------------------------------------
                               Dr. Klaus Dieter-Beck

                               ADDRESS: 790 Harness Creek View Drive
                                        Annapolis, MD 21403

                               -------------------------------------------------
                               James J. Bryja

                               ADDRESS: 4446 Cross Country Drive
                                        Ellicott City, MD  21042

                               -------------------------------------------------
                               James A. Olsen

                               ADDRESS: 1906 Aquinas Drive
                                        Gambrills, MD 21054

                               -------------------------------------------------
                               Michael R. Peelish

                               ADDRESS: 2707 Cranbourne Court
                                        Davidsonville, MD 21035

                               -------------------------------------------------
                               James F. Roberts

                               ADDRESS: 226 Rock Ridge Road
                                        Millersville, MD 21108

                               -------------------------------------------------
                               John R. Tellmann

                               ADDRESS: 455 Sackett Court
                                        Severna Park, MD 21146

                               -------------------------------------------------
                               Greg A. Walker

                               ADDRESS: 24 Harness Creek View Court
                                        Annapolis, MD 21403

                               -------------------------------------------------
                               Frank J. Wood

                               ADDRESS: 610 Brownstone Drive
                                        Severna Park, MD 21146

               [Signature Page to Registration Rights Agreement]

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