Document:

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                                                                     EXHIBIT 4.2
________________________________________________________________________________

                          REGISTRATION RIGHTS AGREEMENT

                           Dated as of August 26, 2004

                                      among

                            CENTURY ALUMINUM COMPANY,
                           the GUARANTORS party hereto

                                       and

                         CREDIT SUISSE FIRST BOSTON LLC,
                   as Representative of the Initial Purchasers

________________________________________________________________________________
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                          REGISTRATION RIGHTS AGREEMENT

      THIS REGISTRATION RIGHTS AGREEMENT (the "AGREEMENT") is made and entered
into as of August 26, 2004, among CENTURY ALUMINUM COMPANY, a Delaware
corporation (the "COMPANY"), each of the GUARANTORS party hereto (the
"GUARANTORS") and CREDIT SUISSE FIRST BOSTON LLC, as representative of the
several purchasers (the "INITIAL PURCHASERS") listed on Schedule A to the
Purchase Agreement (as defined below).

      This Agreement is made pursuant to the Purchase Agreement dated August 10,
2004, among the Company, the Guarantors and the Initial Purchasers (the
"PURCHASE AGREEMENT"), which provides for the sale by the Company to the Initial
Purchasers of an aggregate of $250,000,000 principal amount of the Company's
7.5% Senior Notes due 2014 (the "SECURITIES"). The Notes will be unconditionally
and irrevocably guaranteed (the "GUARANTEES") as to payment of principal,
premium, if any, and interest by the Guarantors. The Company and the Guarantors
have agreed to provide to the Initial Purchasers and their direct and indirect
transferees the registration rights set forth in this Agreement. The execution
of this Agreement by the Company and the Guarantors is a condition to the
closing under the Purchase Agreement.

      In consideration of the foregoing, the parties hereto agree as follows:

      1. Definitions

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

      "1933 ACT" shall mean the Securities Act of 1933, as amended from time to
time.

      "1934 ACT" shall mean the Securities Exchange Act of 1934, as amended from
time to time.

      "BLOCKAGE NOTICE" shall have the meaning set forth in Section 3 hereof.

      "CLOSING DATE" shall mean the Closing Date as defined in the Purchase
Agreement.

      "COMPANY" shall have the meaning set forth in the preamble and shall also
include the Company's successors.

      "EXCHANGE OFFER" shall mean the exchange offer by the Company and the
Guarantors of Exchange Securities for Registrable Securities pursuant to Section
2(a) hereof.
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      "EXCHANGE OFFER REGISTRATION" shall mean a registration under the 1933 Act
effected pursuant to Section 2(a) hereof.

      "EXCHANGE OFFER REGISTRATION STATEMENT" shall mean an exchange offer
registration statement on Form S-4 (or, if applicable, on another appropriate
form) and all amendments and supplements to such registration statement, in each
case including the Prospectus contained therein, all exhibits thereto and all
material incorporated by reference therein.

      "EXCHANGE SECURITIES" shall mean securities issued by the Company under
the Indenture and guaranteed by the Guarantors containing terms identical to the
Securities (except that (i) interest thereon shall accrue from the last date on
which interest was paid on the Securities (or if authenticated between a record
date and interest payment date, from such interest payment date) or, if no such
interest has been paid, from August 26, 2004, (ii) the issuance of the Exchange
Securities will be registered under the 1933 Act and the Exchange Securities
will not contain restrictions on transfer and (iii) the provisions relating to
additional interest will be eliminated) and to be offered to Holders of
Securities in exchange for Securities pursuant to the Exchange Offer.

      "GUARANTORS" shall mean the Guarantors listed on the signature pages
hereof, and shall also include any successor to a Guarantor.

      "HOLDER" shall mean the Initial Purchasers, for so long as they own any
Registrable Securities, and each of their respective successors, assigns and
direct and indirect transferees who become registered owners of Registrable
Securities under the Indenture; provided that for purposes of Sections 4 and 5
of this Agreement, the term "HOLDER" shall include Participating Broker-Dealers
(as defined in Section 4(a)).

      "INDENTURE" shall mean the Indenture relating to the Securities dated as
of August 26, 2004 among the Company, the Guarantors party thereto and
Wilmington Trust Company, as trustee, and as the same may be amended from time
to time in accordance with the terms thereof.

      "INITIAL PURCHASERS" shall have the meaning set forth in the preamble.

      "MAJORITY HOLDERS" shall mean the Holders of a majority of the aggregate
principal amount of outstanding Registrable Securities; provided that whenever
the consent or approval of Holders of a specified percentage of Registrable
Securities is required hereunder, Registrable Securities held by the Company,
the Guarantors or any of their affiliates (as such term is defined in Rule 405
under the 1933 Act) (other than the Initial Purchasers or subsequent Holders of
Registrable Securities if such subsequent holders are deemed to be such
affiliates solely by reason of their holding of such Registrable Securities)
shall not be counted in determining whether such consent or approval was given
by the Holders of such required percentage or amount.

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      "PERSON" shall mean an individual, partnership, limited liability company,
corporation, trust or unincorporated organization, or a government or agency or
political subdivision thereof.

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

      "PURCHASE AGREEMENT" shall have the meaning set forth in the preamble.

      "REGISTRABLE SECURITIES" shall mean the Securities (including the
Guarantees); provided, however, that the Securities shall cease to be
Registrable Securities (i) when a Registration Statement with respect to such
Securities shall have been declared effective under the 1933 Act and such
Securities shall have been disposed of pursuant to such Registration Statement,
or an Exchange Offer shall have been consummated hereunder, and such Securities
shall have been properly tendered pursuant hereto, (ii) when such Securities
have been sold to the public pursuant to Rule 144(k) (or any similar provision
then in force, but not Rule 144A) under the 1933 Act or (iii) when such
Securities shall have ceased to be outstanding.

      "REGISTRATION EXPENSES" shall mean any and all expenses incident to
performance of or compliance by the Company and the Guarantors with this
Agreement, including without limitation: (i) all SEC, stock exchange or National
Association of Securities Dealers, Inc. registration and filing fees, (ii) all
fees and expenses incurred in connection with compliance with state securities
or blue sky laws (including reasonable and documented fees and disbursements of
counsel for any underwriters or Holders in connection with blue sky
qualification of any of the Exchange Securities or Registrable Securities),
(iii) all expenses of any Persons in preparing or assisting in preparing, word
processing, printing and distributing any Registration Statement, any
Prospectus, any amendments or supplements thereto, any underwriting agreements,
securities sales agreements and other documents relating to the performance of
and compliance with this Agreement, (iv) all rating agency fees, (v) all fees
and disbursements relating to the qualification of the Indenture under
applicable securities laws, (vi) the fees and disbursements of the Trustee and
its counsel, (vii) the fees and disbursements of counsel for the Company and the
Guarantors and, in the case of a Shelf Registration Statement, the reasonable
and documented fees and disbursements of one counsel for the Holders (which
counsel shall be selected by the Majority Holders and which counsel may also be
counsel for the Initial Purchasers) provided, however, in connection with an
Underwritten Offering, such fees and disbursements shall be limited to one
Underwritten Offering and only shall include fees and expenses for the Initial
Purchasers and Holders in their capacity

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as selling holders under the Shelf Registration Statement and (viii) the fees
and disbursements of the independent public accountants of the Company and the
Guarantors, including the expenses of any special audits or "COLD COMFORT"
letters required by or incident to such performance and compliance, but
excluding fees and expenses of counsel to the underwriters (other than fees and
expenses set forth in clause (ii) above) or the Holders and underwriting
discounts and commissions and transfer taxes, if any, relating to the sale or
disposition of Registrable Securities by a Holder, which shall be the
responsibility of the Holders.

      "REGISTRATION STATEMENT" shall mean any registration statement of the
Company and the Guarantors that covers any of the Exchange Securities or
Registrable Securities pursuant to the provisions of this Agreement 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.

      "SEC" shall mean the Securities and Exchange Commission.

      "SHELF REGISTRATION" shall mean a registration effected pursuant to
Section 2(b) hereof.

      "SHELF REGISTRATION STATEMENT" shall mean a "SHELF" registration statement
of the Company and the Guarantors pursuant to the provisions of Section 2(b) of
this Agreement which covers (x) all of the Registrable Securities, except
Registrable Securities that the Holders thereof have elected not to include in
such Shelf Registration Statement and (y) no other securities unless approved by
the Holders whose Registrable Securities are covered by such Shelf Registration
Statement, on an appropriate form under Rule 415 under the 1933 Act, or any
similar rule that may be adopted by the SEC, 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.

      "TRUSTEE" shall mean the trustee with respect to the Securities under the
Indenture.

      "UNDERWRITER" shall have the meaning set forth in Section 3 hereof

      "UNDERWRITTEN REGISTRATION" or "UNDERWRITTEN OFFERING" shall mean a
registration in which Registrable Securities are sold to an Underwriter for
reoffering to the public.

      2. Registration Under the 1933 Act.

            (a) To the extent not prohibited by any applicable law or applicable
      interpretation of the Staff of the SEC, the Company and the

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      Guarantors shall use their best efforts to cause to be filed an Exchange
      Offer Registration Statement covering the offer by the Company and the
      Guarantors to the Holders to exchange all of the Registrable Securities
      for Exchange Securities and to have such Registration Statement remain
      effective until the closing of the Exchange Offer. The Company and the
      Guarantors shall commence the Exchange Offer promptly after the Exchange
      Offer Registration Statement has been declared effective by the SEC and
      use their best efforts to have the Exchange Offer consummated not later
      than 60 days after such effective date. The Company and the Guarantors
      shall commence the Exchange Offer by mailing the related exchange offer
      Prospectus and accompanying documents to each Holder stating, in addition
      to such other disclosures as are required by applicable law:

                  (i) that the Exchange Offer is being made pursuant to this
            Registration Rights Agreement and that all Registrable Securities
            validly tendered pursuant to the Exchange Offer will be accepted for
            exchange;

                  (ii) the dates of acceptance for exchange (which shall be a
            period of at least 20 business days from the date such notice is
            mailed) (the "EXCHANGE DATES");

                  (iii) that any Registrable Security not tendered will remain
            outstanding and continue to accrue interest, but will not retain any
            rights under this Registration Rights Agreement;

                  (iv) that Holders electing to have a Registrable Security
            exchanged pursuant to the Exchange Offer will be required to
            surrender such Registrable Security, together with the enclosed
            letters of transmittal, to the institution and at the address
            (located in the Borough of Manhattan, The City of New York)
            specified in the Exchange Offer Prospectus prior to the close of
            business on the last Exchange Date;

                  (v) that Holders electing to have Registrable Securities
            exchanged in the Exchange Offer shall be required to (a) represent
            that all Exchange Securities to be received by them shall be
            acquired in the ordinary course of their business and that at the
            time of the consummation of the Exchange Offer they shall have no
            arrangement or understanding to participate in the distribution
            (within the meaning of the 1933 Act) of the Exchange Securities and
            (b) make such other representations as may be reasonably necessary
            under applicable SEC rules, regulations or interpretations to render
            the use of Form S-4 or other appropriate form under the 1933 Act
            available; and

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                  (vi) that Holders will be entitled to withdraw their election,
            not later than the close of business on the last Exchange Date, by
            sending to the institution and at the address (located in the
            Borough of Manhattan, The City of New York) specified in the
            Exchange Offer Prospectus a, facsimile transmission or letter
            setting forth the name of such Holder, the principal amount of
            Registrable Securities delivered for exchange and a statement that
            such Holder is withdrawing his election to have such Securities
            exchanged.

                  As soon as practicable after the last Exchange Date, the
            Company and the Guarantors shall:

                  (i) accept for exchange Registrable Securities or portions
            thereof properly tendered and not validly withdrawn pursuant to the
            Exchange Offer; and

                  (ii) deliver, or cause to be delivered, to the Trustee for
            cancellation all Registrable Securities or portions thereof so
            accepted for exchange and issue, and cause the Trustee to promptly
            authenticate and mail to each Holder, an Exchange Security equal in
            principal amount to the principal amount of the Registrable
            Securities surrendered by such Holder.

      The Company and the Guarantors shall use their respective best efforts to
complete the Exchange Offer as provided above and shall comply with the
applicable requirements of the 1933 Act, the 1934 Act and other applicable laws
and regulations in connection with the Exchange Offer. The Exchange Offer shall
not be subject to any conditions, other than that the Exchange Offer does not
violate applicable law or any applicable interpretation of the Staff of the SEC.
The Company and the Guarantors shall inform the Initial Purchasers of the names
and addresses of the Holders to whom the Exchange Offer is made, and the Initial
Purchasers shall have the right, subject to applicable law, to contact such
Holders and otherwise facilitate the tender of Registrable Securities in the
Exchange Offer.

            (b) In the event that (i) the Company and the Guarantors determine
      that the Exchange Offer Registration provided for in Section 2(a) above is
      not available or may not be consummated as soon as practicable after the
      last Exchange Date because it would violate applicable law or the
      applicable interpretations of the Staff of the SEC, (ii) the Exchange
      Offer is not for any other reason consummated by March 24, 2005 or (iii)
      the Exchange Offer has been completed and in the opinion of counsel for
      the Initial Purchasers a Registration Statement must be filed and a
      Prospectus must be delivered by the Initial Purchasers in connection with
      any offering or sale of Registrable Securities, the Company and the
      Guarantors shall use their best efforts to cause to be filed as soon as
      practicable after such determination, date or notice of such opinion of

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      counsel is given to the Company, as the case may be, a Shelf Registration
      Statement providing for the sale by the Holders of all of the Registrable
      Securities and to have such Shelf Registration Statement declared
      effective by the SEC. In the event the Company and the Guarantors are
      required to file a Shelf Registration Statement solely as a result of the
      matters referred to in clause (iii) of the preceding sentence, the Company
      and the Guarantors shall use their best efforts to file and have declared
      effective by the SEC both an Exchange Offer Registration Statement
      pursuant to Section 2(a) with respect to all Registrable Securities and a
      Shelf Registration Statement (which may be a combined Registration
      Statement with the Exchange Offer Registration Statement) with respect to
      offers and sales of Registrable Securities held by the Initial Purchasers
      after completion of the Exchange Offer. Subject to the provisions of
      Section 3, the Company and the Guarantors agree to use their best efforts
      to keep the Shelf Registration Statement continuously effective until the
      expiration of the period referred to in Rule 144(k) with respect to the
      Registrable Securities or such shorter period that will terminate when all
      of the Registrable Securities covered by the Shelf Registration Statement
      have been sold pursuant to the Shelf Registration Statement or cease to be
      outstanding or otherwise to be Registrable Securities. The Company and the
      Guarantors further agree to supplement or amend the Shelf Registration
      Statement if required by the rules, regulations or instructions applicable
      to the registration form used by the Company and the Guarantors for such
      Shelf Registration Statement or by the 1933 Act or by any other rules and
      regulations thereunder for shelf registration or if reasonably requested
      by a Holder with respect to information relating to such Holder, and to
      use their best efforts to cause any such amendment to become effective and
      such Shelf Registration Statement to become usable as soon as thereafter
      practicable. The Company and the Guarantors agree to furnish to the
      Holders of Registrable Securities copies of any such supplement or
      amendment promptly after its being used or filed with the SEC.

            (c) The Company and the Guarantors shall pay all Registration
      Expenses in connection with the registration pursuant to Section 2(a) and
      Section 2(b). Each Holder shall pay all underwriting discounts and
      commissions and transfer taxes, if any, relating to the sale or
      disposition of such Holder's Registrable Securities pursuant to the Shelf
      Registration Statement.

            (d) An Exchange Offer Registration Statement pursuant to Section
      2(a) hereof or a Shelf Registration Statement pursuant to Section 2(b)
      hereof will not be deemed to have become effective unless it has been
      declared effective by the SEC; provided, however, that, if, after it has
      been declared effective, the offering of Registrable Securities pursuant
      to a Shelf Registration Statement is interfered with by any stop order,

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      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 during the period of such interference until
      the offering of Registrable Securities pursuant to such Registration
      Statement may legally resume. In the event the Exchange Offer is not
      consummated or the Shelf Registration Statement is not declared effective
      on or prior to March 24, 2005, the interest rate on the Securities will be
      increased by a rate of 0.5% per annum from such date until the Exchange
      Offer is consummated or the Shelf Registration Statement is declared
      effective by the SEC.

            (e) Without limiting the remedies available to the Initial
      Purchasers and the Holders, each of the Company and the Guarantors
      acknowledges that any failure by it to comply with its obligations under
      Section 2(a) and Section 2(b) hereof may result in material injury to the
      Initial Purchasers or the Holders for which there is no adequate remedy at
      law, that it will not be possible to measure damages for such injuries
      precisely and that, in the event of any such failure, the Initial
      Purchasers or any Holder may obtain such relief as may be reasonably
      required to specifically enforce the Company's or such Guarantor's
      obligations under Section 2(a) and Section 2(b) hereof.

      3. Registration Procedures.

      In connection with the obligations of the Company and the Guarantors with
respect to the Registration Statements pursuant to Section 2(a) and Section 2(b)
hereof, the Company and the Guarantors shall as expeditiously as possible:

            (a) prepare and file with the SEC a Registration Statement on the
      appropriate form under the 1933 Act, which form (x) shall be selected by
      the Company and the Guarantors and (y) shall, in the case of a Shelf
      Registration, be available for the sale of the Registrable Securities by
      the selling Holders thereof and (z) shall comply as to form in all
      material respects with the requirements of the applicable form and include
      all financial statements required by the SEC to be filed therewith, and
      use their best efforts to cause such Registration Statement to become
      effective and remain effective in accordance with Section 2 hereof;

            (b) prepare and file with the SEC such amendments and post-effective
      amendments to each Registration Statement as may be necessary to keep such
      Registration Statement effective for the applicable period and cause each
      Prospectus to be supplemented by any required prospectus supplement and,
      as so supplemented, to be filed pursuant to Rule 424 under the 1933 Act;
      subject to Section 4 hereof, to keep each Prospectus current during the
      period described under Section 4(3) and Rule 174 under the 1933 Act that
      is applicable to transactions by brokers or dealers with respect to the
      Registrable Securities or Exchange Securities;

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            (c) in the case of a Shelf Registration, furnish to each Holder of
      Registrable Securities, to counsel for the Initial Purchasers, to counsel
      for the Holders 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; and the Company and the
      Guarantors consent to the use of such Prospectus and any amendment or
      supplement thereto in accordance with applicable law by each of the
      selling Holders of Registrable Securities and any such Underwriters in
      connection with the offering and sale of the Registrable Securities
      covered by and in the manner described in such Prospectus or any amendment
      or supplement thereto in accordance with applicable law;

            (d) use their best efforts to register or qualify the Registrable
      Securities under all applicable state securities or "BLUE SKY" laws of
      such jurisdictions as any Holder of Registrable Securities covered by a
      Registration Statement shall reasonably request in writing by the time the
      applicable Registration Statement is declared effective by the SEC, to
      cooperate with such Holders in connection with any filings required to be
      made with the National Association of Securities Dealers, Inc. and do any
      and all other acts and things which may be reasonably necessary or
      advisable to enable such Holder to consummate the disposition in each such
      jurisdiction of such Registrable Securities owned by such Holder;
      provided, however, that neither the Company nor any Guarantor shall be
      required to (i) qualify as a foreign corporation or as a dealer in
      securities in any jurisdiction where it would not otherwise be required to
      qualify but for this Section 3(d), (ii) file any general consent to
      service of process or (iii) subject itself to taxation in any such
      jurisdiction if it is not so subject;

            (e) in the case of a Shelf Registration, notify each Holder of
      Registrable Securities, counsel for the Holders and counsel for the
      Initial Purchasers promptly and, if requested by any such Holder or
      counsel, confirm such advice in writing (i) when a Registration Statement
      has become effective and when any post-effective amendment thereto has
      been filed and becomes effective, (ii) of any request by the SEC or any
      state securities authority for amendments and supplements to a
      Registration Statement and Prospectus or for additional information after
      the Registration Statement has become effective, (iii) of the issuance by
      the SEC or any state securities authority of any stop order suspending the
      effectiveness of a Registration Statement or the initiation of any
      proceedings for that purpose, (iv) if, between the effective date of a
      Registration Statement and the closing of any sale of Registrable
      Securities covered thereby, the representations and warranties of the
      Company or any Guarantor contained in any underwriting agreement,

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      securities sales agreement or other similar agreement, if any, relating to
      the offering cease to be true and correct in all material respects or if
      the Company or any Guarantor 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, (v)
      of the happening of any event during the period a Shelf Registration
      Statement is effective which makes any statement made in such Registration
      Statement or the related Prospectus untrue in any material respect or
      which requires the making of any changes in such Registration Statement or
      Prospectus in order to make the statements therein not misleading and (vi)
      of any determination by the Company or any Guarantor that a post-effective
      amendment to a Registration Statement would be appropriate;

            (f) make every reasonable effort to obtain the withdrawal of any
      order suspending the effectiveness of a Registration Statement at the
      earliest possible moment and provide immediate notice to each Holder of
      the withdrawal of any such order;

            (g) in the case of a Shelf Registration, 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);

            (h) in the case of a Shelf Registration, cooperate with the selling
      Holders of Registrable Securities to facilitate the timely preparation and
      delivery of certificates representing the Registrable Securities to be
      sold that are free of any restrictive legends and enable such Registrable
      Securities to be in such denominations (consistent with the provisions of
      the Indenture) and registered in such names as the selling Holders may
      reasonably request at least one business day prior to the closing of any
      sale of Registrable Securities;

            (i) in the case of a Shelf Registration, upon the occurrence of any
      event contemplated by Section 3(e)(v) hereof, use their best efforts to
      prepare and file with the SEC 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 necessary to make the
      statements therein, in light of the circumstances under which they were
      made, not misleading. The Company and the Guarantors agree to notify the
      Holders with instructions to suspend use of the Prospectus as promptly as
      practicable after the occurrence of such an event, (provided that the
      Company is not required to specify the nature of the event giving rise to
      the notice requirement hereunder) and the Holders hereby agree to suspend
      use of

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      the Prospectus until the Company and the Guarantors have amended or
      supplemented the Prospectus to correct such misstatement or omission;

            (j) 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 or any document which is to be
      incorporated by reference into a Registration Statement or a Prospectus
      after the initial filing of a Registration Statement, provide copies of
      such document to the Initial Purchasers and their counsel and make such of
      the representatives of the Company and the Guarantors as shall be
      reasonably requested by the Initial Purchasers or their counsel available
      for discussion of such document, and shall not at any time file or make
      any amendment to the Registration Statement, any Prospectus or any
      amendment of or supplement to a Registration Statement or a Prospectus or
      any document which is to be incorporated by reference into a Registration
      Statement or a Prospectus, of which the Initial Purchasers and their
      counsel shall not have previously been advised and furnished a copy or to
      which the Initial Purchasers or their counsel shall reasonably object;

            (k) obtain a CUSIP number for all Exchange Securities or Registrable
      Securities, as the case may be, not later than the effective date of a
      Registration Statement;

            (l) cause the Indenture to be qualified under the Trust Indenture
      Act of 1939, as amended (the "TIA"), in connection with the registration
      of the Exchange Securities or Registrable Securities, as the case may be,
      cooperate with the Trustee and the Holders to effect such changes to the
      Indenture as may be required for the Indenture to be so qualified in
      accordance with the terms of the TIA and execute, and use their best
      efforts to cause the Trustee to execute, all documents as may be required
      to effect such changes and all other forms and documents required to be
      filed with the SEC to enable the Indenture to be so qualified in a timely
      manner;

            (m) in the case of a Shelf Registration, make available for
      inspection by a representative of the Holders of the Registrable
      Securities, any Underwriter participating in any disposition pursuant to
      such Shelf Registration Statement, and such attorneys and accountants as
      are designated by the Holders, at reasonable times and in a reasonable
      manner, all financial and other records, pertinent documents and
      properties of the Company and the Guarantors, and cause the respective
      officers, directors and employees of the Company and the Guarantors to
      supply all information reasonably requested by any such representative,
      Underwriter, attorney or accountant in connection with a Shelf
      Registration Statement; provided that the foregoing inspection and
      information gathering shall be coordinated on behalf of the Initial
      Purchasers by Credit Suisse First Boston LLC and on behalf of the other

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      parties by one counsel designated by and on behalf of such other parties
      which shall be counsel to the Initial Purchasers unless such counsel
      elects not so to act; and provided, further, that such persons shall first
      agree in writing with the Company that any information that is reasonably
      and in good faith designated by the Company in writing as confidential at
      the time of delivery of such information shall be kept confidential by
      such persons unless (i) disclosure of such information is required by
      court or administrative order or is necessary to respond to inquiries of
      regulatory authorities, (ii) disclosure of such information is required by
      law (including any disclosure requirements pursuant to Federal securities
      laws in connection with the filing of the Shelf Registration Statement or
      the use of any Prospectus), (iii) such information becomes generally
      available to the public other than as a result of disclosure or failure to
      safeguard by any such person, or (iv) such information becomes available
      to any such person from a source other than the Company and such source is
      not bound by a confidentiality agreement or other obligation not to
      disclose such information;

            (n) in the case of an Underwritten Offering, if the Securities have
      been rated prior to their initial sale, use their best efforts to confirm
      such ratings shall apply to the Registrable Securities covered by a
      Registration Statement;

            (o) if reasonably requested by any Holder of Registrable Securities
      covered by a Registration Statement, (i) promptly incorporate in a
      Prospectus supplement or post-effective amendment such information with
      respect to such Holder as such Holder reasonably requests to be included
      therein and (ii) make all required filings of such Prospectus supplement
      or such post-effective amendment as soon as the Company or any Guarantor
      has received notification of the matters to be incorporated in such
      filing; and

            (p) in the case of a Shelf Registration, enter into such customary
      agreements and take all such other actions in connection therewith
      reasonably requested by the Holders of a majority of the Registrable
      Securities being sold in order to expedite or facilitate the disposition
      of such Registrable Securities including, but not limited to, an
      Underwritten Offering and in connection with an Underwritten Offering, (i)
      to the extent possible, make such representations and warranties to the
      Holders and any Underwriters of such Registrable Securities with respect
      to the business of the Company, the Guarantors and their respective
      subsidiaries, the Registration Statement, Prospectus and documents
      incorporated by reference or deemed incorporated by reference therein, if
      any, in each case, in form, substance and scope as are customarily made by
      issuers to underwriters in underwritten offerings and confirm the same if
      and when requested, (ii) obtain opinions of counsel to the Company and the
      Guarantors (which counsel and opinions, in form, scope and substance,

                                       12
<PAGE>
      shall be reasonably satisfactory to the Holders and such Underwriters and
      their respective counsel) addressed to each selling Holder and Underwriter
      of Registrable Securities, covering the matters customarily covered in
      opinions requested in underwritten offerings, (iii) obtain "COLD COMFORT"
      letters from the independent certified public accountants of the Company
      and the Guarantors (and, if necessary, any other certified public
      accountant of any subsidiary of the Company or any Guarantor, or of any
      business acquired by the Company or any Guarantor for which financial
      statements and financial data are or are required to be included in the
      Registration Statement) addressed to each selling Holder and Underwriter
      of Registrable Securities, such letters to be in customary form and
      covering matters of the type customarily covered in "COLD COMFORT" letters
      in connection with underwritten offerings, and (iv) deliver such documents
      and certificates as may be reasonably requested by the Holders of a
      majority in principal amount of the Registrable Securities being sold or
      the Underwriters, and which are customarily delivered in underwritten
      offerings, to evidence the continued validity of the representations and
      warranties of the Company and the Guarantors made pursuant to clause (i)
      above and to evidence compliance with any customary conditions contained
      in an underwriting agreement.

      In the case of a Shelf Registration Statement, the Company and the
Guarantors may require each Holder of Registrable Securities to furnish to them
such information regarding the Holder and the proposed distribution by such
Holder of such Registrable Securities as they may from time to time reasonably
request in writing. No Holder of Registrable Securities shall be entitled to any
additional interest thereon pursuant to Section 2(d) unless and until such
Holder shall have provided all such information which is required by the 1933
Act or rules or regulations of the SEC to be included in the Shelf Registration
Statement prior to the time it is declared effective.

      In the case of a Shelf Registration Statement, each Holder agrees that,
upon receipt of any notice (a "BLOCKAGE NOTICE") from the Company or any
Guarantor of

      (x)   the happening of any event of the kind described in Section
            3(e)(ii), 3(e)(iii) or 3(e)(v) hereof, or

      (y)   the good faith determination by the Board of Directors of the
            Company and the Guarantors that, because of valid business reasons
            (not including avoidance of the Company's and the Guarantors'
            obligations hereunder), including, without limitation, the
            acquisition or divestiture of assets, pending corporate
            developments, public filings with the Commission and similar events,
            it is in the interest of the Company or each Guarantor to suspend
            such use, and prior to suspending such use the Company or such
            Guarantor provides the Holders with written notice of such

                                       13
<PAGE>
            suspension, which notice need not specify the nature of the event
            giving rise to such suspension,

upon receipt of instruction to suspend use of the Prospectus, such Holder will
forthwith discontinue disposition of Registrable Securities pursuant to a
Registration Statement until such Holder's receipt of the copies of the
supplemented or amended Prospectus contemplated by Section 3(i) hereof (or a
notice from the Company that such Holder may resume use of the existing
Prospectus), and, if so directed by the Company or such Guarantor, such Holder
will deliver to the Company or such Guarantor (at its expense) all copies in its
possession, other than permanent file copies then in such Holder's possession,
of the Prospectus covering such Registrable Securities current at the time of
receipt of such notice. If the Company or any Guarantor shall give any such
notice to suspend the disposition of Registrable Securities pursuant to a
Registration Statement, the Company and the Guarantors shall extend the period
during which the Registration Statement shall be maintained effective pursuant
to this Agreement by the number of days the Prospectus was not used during the
period from and including the date of the giving of such notice to and including
the date when the Holders shall have (x) received copies of the supplemented or
amended Prospectus necessary to resume such dispositions or (y) a notice
permitting use of the existing Prospectus. The Company and the Guarantors may
suspend the use of the Prospectus for a period not to exceed an aggregate of 45
days in any 90-day or an aggregate of 120 days in any twelve month period.

      The Holders of Registrable Securities covered by a Shelf Registration
Statement who desire to do so may sell such Registrable Securities in an
Underwritten Offering. In any such Underwritten Offering, the investment banker
or investment bankers and manager or managers (the "UNDERWRITERS") that will
administer the offering will be selected by the Majority Holders of the
Registrable Securities included in such offering; provided, however, that no
person may participate in any Underwritten Offering hereunder unless such person
(i) agrees to sell such person's Registrable Securities on the basis reasonably
provided in any underwriting arrangements approved by the persons entitled
hereunder to approve such arrangements and (ii) completes and executes all
questionnaires, powers of attorney, indemnities, underwriting agreements and
other documents reasonably required under the terms of such underwriting
arrangements.

      4. Participation of Broker-Dealers in Exchange Offer.

            (a) The Staff of the SEC has taken the position that any
      broker-dealer that receives Exchange Securities for its own account in the
      Exchange Offer in exchange for Securities that were acquired by such
      broker-dealer as a result of market-making or other trading activities (a
      "PARTICIPATING BROKER-DEALER"), may be deemed to be an "underwriter"
      within the meaning of the 1933 Act and must deliver a prospectus meeting
      the requirements of the 1933 Act in connection with any resale of such
      Exchange Securities.

                                       14
<PAGE>
            The Company and the Guarantors understand that it is the Staff's
      position that if the Prospectus contained in the Exchange Offer
      Registration Statement includes a plan of distribution containing a
      statement to the above effect and the means by which Participating
      Broker-Dealers may resell the Exchange Securities, without naming the
      Participating Broker-Dealers or specifying the amount of Exchange
      Securities owned by them, such Prospectus may be delivered by
      Participating Broker-Dealers to satisfy their prospectus delivery
      obligation under the 1933 Act in connection with resales of Exchange
      Securities for their own accounts, so long as the Prospectus otherwise
      meets the requirements of the 1933 Act.

            (b) In light of the above, notwithstanding the other provisions of
      this Agreement, the Company and the Guarantors agree that the provisions
      of this Agreement as they relate to a Shelf Registration shall also apply
      to an Exchange Offer Registration to the extent, and with such reasonable
      modifications thereto as may be, reasonably requested by the Initial
      Purchasers or by one or more Participating Broker-Dealers, in each case as
      provided in clause (ii) below, in order to expedite or facilitate the
      disposition of any Exchange Securities by Participating Broker-Dealers
      consistent with the positions of the Staff recited in Section 4(a) above;
      provided that:

                  (i) the Company and the Guarantors shall not be required to
            amend or supplement the Prospectus contained in the Exchange Offer
            Registration Statement, as would otherwise be contemplated by
            Section 3(i), for a period exceeding 180 days after the last
            Exchange Date (as such period may be extended pursuant to the
            penultimate paragraph of Section 3 of this Agreement) and
            Participating Broker-Dealers shall not be authorized by the Company
            and the Guarantors to deliver and shall not deliver such Prospectus
            after such period in connection with the resales contemplated by
            this Section 4; and

                  (ii) the application of the Shelf Registration procedures set
            forth in Section 3 of this Agreement to an Exchange Offer
            Registration, to the extent not required by the positions of the
            Staff of the SEC or the 1933 Act and the rules and regulations
            thereunder, will be in conformity with the reasonable request in
            writing to the Company and the Guarantors by the Initial Purchasers
            or with the reasonable request in writing to the Company and the
            Guarantors by one or more broker-dealers who certify to the Initial
            Purchasers, the Company and the Guarantors in writing that they
            anticipate that they will be Participating Broker-Dealers; and
            provided further that, in connection with such application of the
            Shelf Registration procedures set forth in Section 3 to an Exchange
            Offer Registration, the Company and

                                       15
<PAGE>
            the Guarantors shall be obligated (x) to deal only with one entity
            representing the Participating Broker-Dealers, which shall be Credit
            Suisse First Boston LLC unless it elects not to act as such
            representative, in which case it shall be the entity chosen by the
            consent of a majority of the Participating Broker-Dealers, (y) to
            pay the fees and expenses of only one counsel representing the
            Participating Broker-Dealers, which shall be counsel to the Initial
            Purchasers unless such counsel elects not to so act, in which case
            it shall be the counsel chosen by the consent of a majority of the
            Participating Broker-Dealers and (z) to cause to be delivered only
            one, if any, "COLD COMFORT" letter with respect to the Prospectus in
            the form existing on the last Exchange Date and with respect to each
            subsequent amendment or supplement, if any, effected during the
            period specified in clause (i) above.

            (c) The Initial Purchasers shall have no liability to the Company,
      the Guarantors or any Holder with respect to any good faith request that
      they may make pursuant to Section 4(b) above.

      5. Indemnification and Contribution.

            (a) The Company and the Guarantors agree, jointly and severally, to
      indemnify and hold harmless the Initial Purchasers, each Holder and each
      Person, if any, who controls any Initial Purchaser or any Holder within
      the meaning of either Section 15 of the 1933 Act or Section 20 of the 1934
      Act, or is under common control with, or is controlled by, any Initial
      Purchaser or any Holder, from and against all losses, claims, damages and
      liabilities (including, without limitation, any legal or other expenses
      reasonably incurred by the Initial Purchaser, any Holder or any such
      controlling or affiliated Person in connection with defending or
      investigating any such action or claim) caused by any untrue statement or
      alleged untrue statement of a material fact contained in any Registration
      Statement (or any amendment thereto) pursuant to which Exchange Securities
      or Registrable Securities were registered under the 1933 Act, including
      all documents incorporated therein by reference, or caused by any omission
      or alleged omission to state therein a material fact required to be stated
      therein or necessary to make the statements therein, in light of the
      circumstances under which they were made, not misleading, or caused by any
      untrue statement or alleged untrue statement of a material fact contained
      in any Prospectus (as amended or supplemented if the Company or any
      Guarantor shall have furnished any amendments or supplements thereto), or
      caused by any omission or alleged omission to state therein a material
      fact necessary to make the statements therein in light of the
      circumstances under which they were made not misleading, except insofar as
      such losses, claims, damages or liabilities are caused by any such untrue
      statement or omission or alleged untrue statement or omission in reliance
      upon and in conformity with written information furnished to the

                                       16
<PAGE>
      Company by any Initial Purchaser or any selling Holder expressly for use
      therein; provided that the Company and the Guarantors shall not be liable
      to any Initial Purchaser, any Holder or any such controlling or affiliated
      Person with respect to any Initial Purchaser or Holder to the extent that
      any such losses, claims, damages or liabilities (the "LOSSES") arise out
      of or are based upon an untrue statement or alleged untrue statement of
      material fact or omission or alleged omission if either (A)(i) such
      Initial Purchaser or Holder was required by law to send or deliver, and
      failed to send or deliver, a copy of the Prospectus with or prior to
      delivery of written confirmation of the sale by such Initial Purchaser or
      Holder to the person asserting the claims from which such Losses arise and
      (ii) the Prospectus made available by the Company prior to the time of
      delivery of such confirmation would have corrected such untrue statement
      or alleged untrue statement or omission or alleged omission or (B)(i) such
      Holder disposed of Registrable Securities to the person asserting the
      claim from which such Losses arise pursuant to a Registration Statement
      and sent or delivered, or was required by law to send or deliver, a
      Prospectus to such person in connection with such disposition and (ii)
      such Holder received a Blockage Notice or a notice from the Company of the
      happening of an event of the kind described in Section 3(e)(iii) in
      writing prior to execution and delivery of a contract for such
      disposition. In connection with any Underwritten Offering permitted by
      Section 3, the Company and the Guarantors will also indemnify the
      Underwriters, if any, selling brokers, dealers and similar securities
      industry professionals participating in the distribution, their officers
      and directors and each Person who controls such Persons (within the
      meaning of the 1933 Act and the 1934 Act) to the same extent as provided
      above with respect to the indemnification of the Holders, if requested in
      connection with any Registration Statement.

            (b) Each Holder agrees, severally and not jointly, to indemnify and
      hold harmless the Company and the Guarantors, the Initial Purchasers and
      the other selling Holders, and each of their respective directors,
      officers who sign the Registration Statement and each Person, if any, who
      controls the Company or any Guarantor, any Initial Purchaser and any other
      selling Holder within the meaning of either Section 15 of the 1933 Act or
      Section 20 of the 1934 Act to the same extent as the foregoing indemnity
      from the Company and the Guarantors to the Initial Purchasers and the
      Holders, but only with reference to any untrue statement or alleged untrue
      statement of a material fact contained in any Registration Statement (or
      any amendment thereto) pursuant to which Exchange Securities or
      Registrable Securities were registered under the 1933 Act, including all
      documents incorporated therein by reference, or caused by any omission or
      alleged omission to state therein a material fact required to be stated
      therein or necessary to make the statements therein, in light of the
      circumstances under which they were made, not misleading, or caused by any
      untrue statement or alleged untrue statement of a material fact contained
      in any Prospectus (or any amendment or supplement thereto), or caused by
      any omission or alleged omission to state therein a material fact

                                       17
<PAGE>
      necessary to make the statements therein in light of the circumstances
      under which they were made not misleading, made in reliance upon and in
      conformity with written information furnished to the Company by such
      Holder expressly for use therein.

            (c) In case any proceeding (including any governmental
      investigation) shall be instituted involving any Person in respect of
      which indemnity may be sought pursuant to either paragraph (a) or
      paragraph (b) above, such Person (the "INDEMNIFIED PARTY") shall promptly
      notify the Person against whom such indemnity may be sought (the
      "INDEMNIFYING PARTY") in writing; provided that the failure to so notify
      the indemnifying party (i) will not relieve it from liability under
      paragraphs (a) and (b) above unless and to the extent it did not otherwise
      learn of such action and such failure results in the forfeiture by the
      indemnifying party of substantial rights and defenses and (ii) will not,
      in any event, relieve the indemnifying party from any obligations to any
      indemnified party other than the indemnification obligations provided in
      paragraph (a) or (b) above. In case any such action is brought against any
      indemnified party, the indemnifying party will be entitled to participate
      therein and, to the extent that it may wish, jointly with any other
      indemnifying party, to assume the defense thereof, with counsel
      satisfactory to such indemnified party (who shall not, except with the
      consent of the indemnified party, be counsel to the indemnifying party),
      and after notice from the indemnifying party to such indemnified party of
      its election so to assume the defense thereof, the indemnifying party will
      not be liable to such indemnified party under this Section for any legal
      or other expenses subsequently incurred by such indemnified party in
      connection with the defense thereof other than reasonable costs of
      investigation. It is understood that the indemnifying party shall not, in
      connection with any proceeding or related proceedings in the same
      jurisdiction, be liable for (A) the fees and expenses of more than one
      separate firm (in addition to any local counsel) for the Initial
      Purchasers and all Persons, if any, who control any Initial Purchaser
      within the meaning of either Section 15 of the 1933 Act or Section 20 of
      the 1934 Act, (B) the fees and expenses of more than one separate firm (in
      addition to any local counsel) for the Company and the Guarantors, their
      respective directors, officers who sign the Registration Statement and
      each Person, if any, who controls the Company or any Guarantor within the
      meaning of either such Section and (C) the fees and expenses of more than
      one separate firm (in addition to any local counsel) for all Holders and
      all Persons, if any, who control any Holders within the meaning of either
      such Section, and that all such fees and expenses shall be reimbursed as
      they are incurred. In such case involving the Initial Purchasers and
      Persons who control the Initial Purchasers, such firm shall be designated
      in writing by Credit Suisse First Boston LLC. In such case

                                       18
<PAGE>
      involving the Holders and such Persons who control Holders, such firm
      shall be designated in writing by the Majority Holders. In all other
      cases, such firm shall be designated by the Company. The indemnifying
      party shall not be liable for any settlement of any proceeding effected
      without its written consent but, if settled with such consent or if there
      be a final judgment for the plaintiff, the indemnifying party agrees to
      indemnify the indemnified party from and against any loss or liability by
      reason of such settlement or judgment. No indemnifying party shall,
      without the prior written consent of the indemnified party, effect any
      settlement of any pending or threatened proceeding in respect of which
      such indemnified party is or could have been a party and indemnity could
      have been sought hereunder by such indemnified party, unless such
      settlement includes an unconditional release of such indemnified party
      from all liability on claims that are the subject matter of such
      proceeding and does not include a statement as to or an admission of
      fault, culpability or failure to act by or on behalf of any indemnified
      party.

            (d) If the indemnification provided for in paragraph (a) or
      paragraph (b) of this Section 5 is unavailable to an indemnified party or
      insufficient in respect of any losses, claims, damages or liabilities,
      then each indemnifying party under such paragraph, in lieu of indemnifying
      such indemnified party thereunder, shall contribute to the amount paid or
      payable by such indemnified party as a result of such losses, claims,
      damages or liabilities in such proportion as is appropriate to reflect the
      relative fault of the indemnifying party or parties on the one hand and of
      the indemnified party or parties on the other hand in connection with the
      statements or omissions that resulted in such losses, claims, damages or
      liabilities, as well as any other relevant equitable considerations. The
      relative fault of the Company and the Guarantors, on the one hand, and the
      Holders, on the other hand, 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 or any Guarantor or by the Holders
      and the parties' relative intent, knowledge, access to information and
      opportunity to correct or prevent such statement or omission. The Holders'
      respective obligations to contribute pursuant to this Section 5(d) are
      several in proportion to the respective principal amount of Registrable
      Securities of such Holder that were registered pursuant to a Registration
      Statement.

            (e) The Company, each Guarantor and each Holder agree that it would
      not be just or equitable if contribution pursuant to this Section 5 were
      determined by pro rata allocation or by any other method of allocation
      that does not take account of the equitable considerations referred to in
      paragraph (d) above. The amount paid or payable by an indemnified party as
      a result of the losses, claims, damages and liabilities

                                       19
<PAGE>
      referred to in paragraph (d) above shall be deemed to include, subject to
      the limitations set forth above, any legal or other expenses reasonably
      incurred by such indemnified party in connection with investigating or
      defending any such action or claim. Notwithstanding the provisions of this
      Section 5, no Holder shall be required to indemnify or contribute any
      amount in excess of the amount by which the total price at which
      Registrable Securities were sold by such Holder exceeds the amount of any
      damages that such 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 1933 Act) shall be entitled to contribution from any
      Person who was not guilty of such fraudulent misrepresentation. The
      remedies provided for in this Section 5 are not exclusive and shall not
      limit any rights or remedies which may otherwise be available to any
      indemnified party at law or in equity.

      The indemnity and contribution provisions contained in this Section 5
shall remain operative and in full force and effect regardless of (i) any
termination of this Agreement, (ii) any investigation made by or on behalf of
the Initial Purchasers, any Holder or any Person controlling any Initial
Purchaser or any Holder, or by or on behalf of the Company and the Guarantors,
their officers or directors or any Person controlling the Company or any
Guarantor, (iii) acceptance of any of the Exchange Securities and (iv) any sale
of Registrable Securities pursuant to a Shelf Registration Statement.

      6. Miscellaneous.

            (a) No Inconsistent Agreements. Neither the Company nor any
      Guarantor has entered into, and on or after the date of this Agreement
      will enter into, any agreement which is inconsistent with the rights
      granted to the Holders of Registrable Securities in this Agreement or
      otherwise conflicts with the provisions hereof. 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 other issued and outstanding
      securities of the Company or any Guarantor 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 and the Guarantors have
      obtained the written consent of Holders of at least a majority in
      aggregate principal amount of the outstanding Registrable Securities
      affected by such amendment, modification, supplement, waiver or consent;
      provided, however, that no amendment, modification, supplement, waiver or
      consent to any departure from the provisions of Section 5 hereof shall be
      effective as against any Holder of Registrable Securities unless consented
      to in writing by such Holder.

                                       20
<PAGE>
            (c) Notices. All notices and other communications provided for or
      permitted hereunder shall be made in writing by hand-delivery, registered
      first-class mail, telecopier, or any courier guaranteeing overnight
      delivery (i) if to a Holder, at the most current address given by such
      Holder to the Company by means of a notice given in accordance with the
      provisions of this Section 6(c), which address initially is, with respect
      to the Initial Purchasers, the address set forth in the Purchase
      Agreement; and (ii) if to the Company and the Guarantors, initially at the
      Company's address set forth in the Purchase Agreement and thereafter at
      such other address, notice of which is given in accordance with the
      provisions of this Section 6(c).

      All such notices and communications shall be deemed to have been duly
given: at the time delivered by hand, if personally delivered; five business
days after being deposited in the mail, postage prepaid, if mailed; when receipt
is acknowledged, if telecopied; and on the next business day if timely delivered
to an air courier guaranteeing overnight delivery.

      Copies of all such notices, demands, or other communications shall be
concurrently delivered by the Person giving the same to the Trustee, at the
address specified in the Indenture.

            (d) 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 limitation and without the need
      for an express assignment, subsequent Holders; provided that nothing
      herein shall be deemed to permit any assignment, transfer or other
      disposition of Registrable Securities in violation of the terms of the
      Purchase Agreement. If any 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
      and such Person shall be entitled to receive the benefits hereof. The
      Initial Purchasers (in their capacity as initial Purchasers) shall have no
      liability or obligation to the Company or the Guarantors with respect to
      any failure by a Holder to comply with, or any breach by any Holder of,
      any of the obligations of such Holder under this Agreement.

            (e) Purchases and Sales of Securities. The Company and the
      Guarantors shall not, and shall use their best efforts to cause their
      respective affiliates (as defined in Rule 405 under the 1933 Act) not to,
      purchase and then resell or otherwise transfer any Securities which
      constitute "restricted securities" under Rule 144 under the 1933 Act
      except pursuant to an effective registration statement under the 1933 Act.

                                       21
<PAGE>
            (f) Third Party Beneficiary. The Holders shall be third party
      beneficiaries to the agreements made hereunder between the Company and the
      Guarantors, on the one hand, and the Initial Purchasers, on the other
      hand, and shall have the right to enforce such agreements directly to the
      extent it deems such enforcement necessary or advisable to protect its
      rights or the rights of Holders hereunder.

            (g) Counterparts. This Agreement may be executed in any number of
      counterparts and by the parties hereto in separate counterparts, each of
      which when so executed shall be deemed to be an original and all of which
      taken together shall constitute one and the same agreement.

            (h) Headings. The headings in this Agreement are for convenience of
      reference only and shall not limit or otherwise affect the meaning hereof

            (i) Governing Law. This Agreement shall be governed by the laws of
      the State of New York.

            (j) Severability. In the event that any one or more of the
      provisions contained herein, or the application thereof in any
      circumstance, is held invalid, illegal or unenforceable, the validity,
      legality and enforceability of any such provision in every other respect
      and of the remaining provisions contained herein shall not be affected or
      impaired thereby.

                                       22
<PAGE>
      IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first written above.

                                     CENTURY ALUMINUM COMPANY

                                        By: /s/ Daniel J. Krofcheck
                                            ____________________________________
                                            Name:  Daniel J. Krofcheck
                                            Title: Vice President and Treasurer

                                     CENTURY ALUMINUM OF WEST VIRGINIA, INC.,
                                          as a Guarantor

                                        By: /s/ Daniel J. Krofcheck
                                            ____________________________________
                                            Name:  Daniel J. Krofcheck
                                            Title: Vice President and Treasurer

                                     BERKELEY ALUMINUM, INC.,
                                          as a Guarantor

                                        By: /s/ Daniel J. Krofcheck
                                            ____________________________________
                                            Name:  Daniel J. Krofcheck
                                            Title: Vice President and Treasurer

                                     CENTURY KENTUCKY, INC.,
                                          as a Guarantor

                                        By: /s/ Daniel J. Krofcheck
                                            ____________________________________
                                            Name:  Daniel J. Krofcheck
                                            Title: Vice President and Treasurer

                                     VIRGIN ISLANDS ALUMINA
                                     CORPORATION LLC.,
                                          as a Guarantor

                                        By: /s/ Daniel J. Krofcheck
                                            ____________________________________
                                            Name:  Daniel J. Krofcheck
                                            Title: Vice President and Treasurer
<PAGE>
                                     METALSCO, LTD.,
                                          as a Guarantor

                                        By: /s/ Daniel J. Krofcheck
                                            ____________________________________
                                            Name:  Daniel J. Krofcheck
                                            Title: Vice President and Treasurer

                                     SKYLINER, INC.,
                                          as a Guarantor

                                        By: /s/ Daniel J. Krofcheck
                                            ____________________________________
                                            Name:  Daniel J. Krofcheck
                                            Title: Vice President and Treasurer

                                     NSA, LTD.,
                                          as a Guarantor

                                     By:  Metalsco, Ltd., a Georgia corporation,
                                          its general partner

                                        By: /s/ Daniel J. Krofcheck
                                            ____________________________________
                                            Name:  Daniel J. Krofcheck
                                            Title: Vice President and Treasurer

                                     HANCOCK ALUMINUM LLC,
                                          as a Guarantor

                                        By: /s/ Daniel J. Krofcheck
                                            ____________________________________
                                            Name:  Daniel J. Krofcheck
                                            Title: Vice President and Treasurer

                                     CENTURY LOUISIANA, INC.
                                          as a Guarantor

                                        By: /s/ Daniel J. Krofcheck
                                            ____________________________________
                                            Name:  Daniel J. Krofcheck
                                            Title: Vice President and Treasurer

                                     CENTURY ALUMINUM HOLDINGS, INC.
                                          as a Guarantor
<PAGE>
                                        By: /s/ Daniel J. Krofcheck
                                            ____________________________________
                                            Name:  Daniel J. Krofcheck
                                            Title: Vice President and Treasurer

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

CREDIT SUISSE FIRST BOSTON LLC
BANC OF AMERICA SECURITIES LLC
GOLDMAN, SACHS & CO.
J.P. MORGAN SECURITIES INC.

By: CREDIT SUISSE FIRST BOSTON LLC

By: /s/ Jeff Porphy
    __________________________________
    Name:  Jeff Porphy
    Title: Director<PAGE>

                                                                     EXHIBIT 4.3

                          THIRD SUPPLEMENTAL INDENTURE

      THIRD SUPPLEMENTAL INDENTURE (this "Supplemental Indenture"), entered into
as of August 6, 2004, among Century Aluminum Company, a Delaware corporation
(the "Company"), the Guarantors party hereto (the "Guarantors") and Wilmington
Trust Company, as trustee (the "Trustee").

                                    RECITALS

      WHEREAS, the Company, the Guarantors party thereto and the Trustee entered
into the Indenture, dated as of April 2, 2001 (as supplemented by the First
Supplemental Indenture (as defined below) and the Second Supplemental Indenture
(as defined below), the "Indenture"), relating to the Company's 11 3/4% Senior
Secured First Mortgage Notes due 2008 (the "Notes");

      WHEREAS, the Company, the Trustee and Hancock Aluminum LLC ("Hancock")
executed a Supplemental Indenture to the Indenture, dated as of April 1, 2003
(the "First Supplemental Indenture"), pursuant to which Hancock agreed to be a
Guarantor under the Indenture and to be bound by the terms of the Indenture
applicable to Guarantors;

      WHEREAS, the Company, the Guarantors party thereto and the Trustee
executed an Amendment to Indenture, dated as of May 5, 2003 (the "Second
Supplemental Indenture"), pursuant to which the Indenture was amended to cure a
defect;

      WHEREAS, the Company and the Guarantors propose to amend the Indenture
(the "Proposed Amendments"), which Proposed Amendments must be approved with the
written consent of the holders (the "Holders") of a majority of the aggregate
principal amount of the outstanding Notes, or in the case of Sections 4.12 and
4.13 thereof, 66-2/3% of the outstanding Notes;

      WHEREAS, the Company has solicited the consents of the Holders of the
Notes pursuant to the Offer to Purchase and Consent Solicitation Statement dated
July 29, 2004, (as amended, supplemented or modified, the "Consent Solicitation
Statement"), to the Proposed Amendments to the Indenture upon the terms and
subject to the conditions set forth therein;

      WHEREAS, the Company has received the valid consents of the Holders of at
least a majority in aggregate principal amount outstanding of the Notes
consenting to the substance of the Proposed Amendments set forth in this
Supplemental Indenture;

      WHEREAS, all conditions and requirements necessary to make this
Supplemental Indenture a valid, binding, and legal instrument in accordance with
the terms of the Indenture have been performed and fulfilled and the execution
and delivery hereof have been in all respects duly authorized, and

      WHEREAS, pursuant to Section 9.02 of the Indenture, the Trustee is
authorized to execute and deliver this Supplemental Indenture.

      NOW, THEREFORE, in consideration of the premises herein contained and for
other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, it is mutually covenanted and agreed as follows:
<PAGE>
                                   AGREEMENTS

      SECTION 1. Defined Terms. Capitalized terms used herein and not otherwise
defined herein are used as defined in the Indenture.

      SECTION 2. Amendments to Indenture. Effective as of the Amendment
Effective Date (as defined below), except as set forth in Section 14 below:

      (a) The following Sections of the Indenture, and any corresponding
provisions in the Notes, hereby are deleted in their entirety and replaced with
"Intentionally Omitted":

<TABLE>
<CAPTION>
EXISTING SECTION NUMBER    CAPTION
-----------------------    -------
<S>                        <C>
Section 4.03 ..........    Existence

Section 4.04 ..........    Payment of Taxes and Other Claims

Section 4.05 ..........    Maintenance of Properties and Insurance

Section 4.06 ..........    Limitation on Debt and Disqualified or Preferred
                           Stock

Section 4.07 ..........    Limitation on Restricted Payments

Section 4.08 ..........    Limitation on Liens

Section 4.09 ..........    Limitation on Dividend and Other Payment
                           Restrictions Affecting Restricted Subsidiaries

Section 4.10 ..........    Limitation on Sale or Issuance of Equity Interests
                           of Restricted Subsidiaries

Section 4.11 ..........    Guaranties by Restricted Subsidiaries

Section 4.12 ..........    Repurchase of Notes upon a Change of Control

Section 4.13 ..........    Limitation on Asset Sales

Section 4.14 ..........    Limitation on Transactions with Shareholders and
                           Affiliates

Section 4.15 ..........    Line of Business

Section 4.17 ..........    Financial Reports

Section 4.18 ..........    Reports to Trustee

Section 4.19 ..........    Impairment of Security Interest; Further
                           Assurances

Section 4.20 ..........    Limitations on Certain Activities by Century
                           Aluminum of Kentucky LLC
</TABLE>

      (b) Section 5.01 of the Indenture captioned "Consolidation, Merger or Sale
of Assets by the Company; No Lease of All or Substantially All Assets" is hereby
amended by amending and restating paragraph (a) thereof in its entirety to read
as follows:

      "(a) The Company will not
<PAGE>
            (i) consolidate with or merge with or into any Person, or

            (ii) sell, convey, transfer, or otherwise dispose of all or
      substantially all of the assets of the Company and its consolidated
      Subsidiaries, as an entirety or substantially as an entirety, in one
      transaction or a series of related transactions, to any Person or

          (iii) permit any Person to merge with or into the Company

     unless

                  (A) either (x) the Company is the continuing Person or (y) the
            resulting, surviving or transferee Person is a corporation organized
            and validly existing under the laws of the United States of America
            or any jurisdiction thereof and expressly assumes by supplemental
            indenture all of the obligations of the Company under the Indenture
            and the Notes and expressly assumes all of the obligations of the
            Company under the Security Documents; and

                  (B) [Intentionally Omitted]

                  (C) [Intentionally Omitted]

                  (D) [Intentionally Omitted]

                  (E) the Company delivers to the Trustee an Officers'
            Certificate and an Opinion of Counsel, each stating that the
            consolidation, merger or transfer and the supplemental indenture (if
            any) comply with the Indenture."

      (c) Section 5.02 of the Indenture captioned "Consolidation, Merger or Sale
of Assets by a Guarantor" is hereby amended by deleting subclause (iii)(B)(2) of
paragraph (a) thereof in its entirety and replacing it with "Intentionally
Omitted".

      (d) Section 6.01 of the Indenture captioned "Events of Default" is hereby
amended and restated in its entirety to read as follows:

            "Events of Default. An "Event of Default" occurs if

            (1) the Company defaults in the payment of the principal of any Note
      when the same becomes due and payable at maturity, upon acceleration or
      redemption, or otherwise;

            (2) the Company defaults in the payment of interest (including any
      Additional Interest) on any Note when the same becomes due and payable,
      and the default continues for a period of 30 days;

            (3) the Company fails to make an Offer to Purchase and thereafter
      accept and pay for Notes tendered when and as required pursuant to Section
      4.12 or Section 4.13, or the Company or any Restricted Subsidiary fails to
      comply with Section 4.06 or Section 4.07 or the Company or any Guarantor
      fails to comply with Article 5 or Century Aluminum of Kentucky LLC
      defaults in the performance of or breaches any of the covenants in Section
      4.20 applicable to it;

            (4) the Company or any Restricted Subsidiary defaults in the
      performance of or breaches any other covenant or agreement of the Company
      in the Indenture or under the Notes or in the Security Documents and the
      default or breach continues for a period of 60 consecutive days after
<PAGE>
      written notice to the Company by the Trustee or to the Company and the
      Trustee by the Holders of 25% or more in aggregate principal amount of the
      Notes;

            (5) [Intentionally Omitted]

            (6) [Intentionally Omitted]

            (7) an involuntary case or other proceeding is commenced against the
      Company or any Significant Restricted Subsidiary with respect to it or its
      debts under any bankruptcy, insolvency or other similar law now or
      hereafter in effect seeking the appointment of a trustee, receiver,
      liquidator, custodian or other similar official of it or any substantial
      part of its property, and such involuntary case or other proceeding
      remains undismissed and unstayed for a period of 60 days; or an order for
      relief is entered against the Company or any Significant Restricted
      Subsidiary under the federal bankruptcy laws as now or hereafter in
      effect;

            (8) the Company or any of its Significant Restricted Subsidiaries
      (i) commences a voluntary case under any applicable bankruptcy, insolvency
      or other similar law now or hereafter in effect, or consents to the entry
      of an order for relief in an involuntary case under any such law, (ii)
      consents to the appointment of or taking possession by a receiver,
      liquidator, assignee, custodian, trustee, sequestrator or similar official
      of the Company or any of its Significant Restricted Subsidiaries or for
      all or substantially all of the property and assets of the Company or any
      of its Significant Restricted Subsidiaries or (iii) effects any general
      assignment for the benefit of creditors (an event of default specified in
      clause (7) or (8) a "bankruptcy default");

            (9) [Intentionally Omitted]

            (10) [Intentionally Omitted]"

      (e) Any definitions used exclusively in the provisions of the Indenture
   deleted pursuant to Paragraphs (a) through (d) of this Section 2 are hereby
   deleted in their entirety from the Indenture and the Notes, and all
   references in the Indenture and the Notes to paragraphs, sections, articles
   or other terms or provisions of the Indenture referred to in Section 2(a)
   above or that have been otherwise deleted pursuant to this Supplemental
   Indenture are hereby deleted in their entirety.

      SECTION 3. Indenture Ratified. Except as hereby otherwise expressly
provided, the Indenture is in all respects ratified and confirmed, and all the
terms, provisions and conditions thereof shall be and remain in full force and
effect.

      SECTION 4. Counterparts. This Supplemental Indenture may be signed in
various counterparts which together will constitute one and the same instrument.

      SECTION 5. Supplemental Indenture is a Supplement to Indenture. This
Supplemental Indenture is an amendment supplemental to the Indenture and the
Indenture and this Supplemental Indenture will henceforth be read together.

      SECTION 6. Governing Law. This Supplemental Indenture shall be governed by
and construed in accordance with the laws of the State of New York.

      SECTION 7. References to Supplemental Indenture. Any and all notices,
requests, certificates and other instruments executed and delivered after the
execution and delivery of this Supplemental Indenture may refer to the Indenture
without making specific reference to this Supplemental Indenture, but
<PAGE>
nevertheless all such references shall include this Supplemental Indenture
unless the context otherwise requires.

      SECTION 8. Effect of This Supplemental Indenture. From and after the
Amendment Effective Date, the Indenture shall be deemed to be modified as herein
provided (except as provided in Section 14) but except as modified hereby, the
Indenture shall continue in full force and effect. The Indenture as modified
hereby shall be read taken and construed as one and the same instrument.

      SECTION 9. Severability. In the event that any provisions of this
Supplemental Indenture shall be invalid, illegal or unenforceable, the validity,
legality and enforceability of the remaining provisions shall not in any way be
affected or impaired thereby.

      SECTION 10. Trust Indenture Act. If any provisions hereof limit, qualify
or conflict with any provisions of the Trust Indenture Act of 1939 required
under the Trust Indenture Act of 1939 to be a part of and govern this
Supplemental Indenture, the provisions of the Trust Indenture Act of 1939 shall
control. If any provision hereof modifies or excludes any provision of the Trust
Indenture Act of 1939 that pursuant to the Trust Indenture Act of 1939 may be so
modified or excluded, the provisions of the Trust Indenture Act of 1939 as so
modified or excluded hereby shall apply.

      SECTION 11. Trustee Makes No Representation. The Trustee makes no
representation as to the validity or adequacy of this Supplemental Indenture or
the recitals contained herein.

      SECTION 12. Effect of Headings. The section headings herein are for
convenience only and shall not affect the construction thereof.

      SECTION 13. Effectiveness. This Supplemental Indenture shall become
effective upon execution by the Company and the Trustee. As used herein, the
"Amendment Effective Date" shall mean the date that the Company delivers written
notice to the Trustee that the Notes tendered and not validly withdrawn pursuant
to the Consent Solicitation Statement have been accepted for purchase.

      SECTION 14. Effectiveness of Amendments to Sections 4.12 and 4.13.
Notwithstanding anything to the contrary herein, Sections 4.12 and 4.13 of the
Indenture shall remain in effect from and after the Amendment Effective Date
unless, in the written notice referred to in Section 13, the Company confirms to
the Trustee that Holders of at least 66-22/3% of the aggregate principal amount
of the Notes were tendered and not withdrawn pursuant to the Consent
Solicitation Statement and have been accepted for purchase.

                            [Signature Page Follows]
<PAGE>
      IN WITNESS WHEREOF, the parties hereto have caused this Supplemental
Indenture to be duly executed as of the date first above written.

                                  CENTURY ALUMINUM COMPANY, AS ISSUER:

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

                                  WILMINGTON TRUST COMPANY, AS TRUSTEE:

                                  By:  /s/ Kristin Long
                                      -------------------------------------
                                      Name:  Kristin Long
                                      Title: Financial Services Officer

                                  CENTURY OF WEST VIRGINIA, INC., AS GUARANTOR:

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

                                  BERKELEY ALUMINUM, INC., AS GUARANTOR:

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

                                  VIRGIN ISLANDS ALUMINA CORPORATION LLC,
                                  AS GUARANTOR:

                                  By:
                                      -------------------------------------
                                      Name:
                                      Title:
<PAGE>
      IN WITNESS WHEREOF, the parties hereto have caused this Supplemental
Indenture to be duly executed as of the date first above written.

                                  CENTURY ALUMINUM COMPANY, AS ISSUER:

                                  By:  /s/ Daniel J. Krofcheck
                                      ---------------------------------------
                                      Name: Daniel J. Krofcheck
                                      Title: Vice President and Treasurer

                                  WILMINGTON TRUST COMPANY, AS TRUSTEE:

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

                                  CENTURY OF WEST VIRGINIA, INC., AS GUARANTOR:

                                  By:   /s/ Daniel J. Krofcheck
                                      ---------------------------------------
                                      Name: Daniel J. Krofcheck
                                      Title: Vice President and Treasurer

                                  BERKELEY ALUMINUM, INC., AS GUARANTOR:

                                  By:   /s/ Daniel J. Krofcheck
                                      ---------------------------------------
                                      Name: Daniel J. Krofcheck
                                      Title: Vice President and Treasurer

                                  VIRGIN ISLANDS ALUMINA CORPORATION
                                  LLC, AS GUARANTOR:

                                  By:   /s/ Daniel J. Krofcheck
                                      ---------------------------------------
                                      Name: Daniel J. Krofcheck
                                      Title: Vice President and Treasurer
<PAGE>
                                  CENTURY KENTUCKY, INC., AS GUARANTOR:

                                  By:   /s/ Daniel J. Krofcheck
                                      ---------------------------------------
                                      Name: Daniel J. Krofcheck
                                      Title: Vice President and Treasurer

                                  HANCOCK ALUMINUM LLC, AS GUARANTOR:

                                  By:   /s/ Daniel J. Krofcheck
                                      ---------------------------------------
                                      Name: Daniel J. Krofcheck
                                      Title: Vice President and Treasurer

                                  METALSCO, LTD., AS GUARANTOR:

                                  By:   /s/ Daniel J. Krofcheck
                                      ---------------------------------------
                                      Name: Daniel J. Krofcheck
                                      Title: Vice President and Treasurer

                                  SKYLINER, INC., AS GUARANTOR:

                                  By:   /s/ Daniel J. Krofcheck
                                      ---------------------------------------
                                      Name: Daniel J. Krofcheck
                                      Title: Vice President and Treasurer

                                  NSA, LTD., AS GUARANTOR:

                                  By: Metalsco, Ltd., a Georgia corporation,
                                      its general partner

                                  By:   /s/ Daniel J. Krofcheck
                                      ---------------------------------------
                                      Name: Daniel J. Krofcheck
                                      Title: Vice President and Treasurer

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