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                                                                    EXHIBIT 10.1


                     COGENTRIX VIRGINIA LEASING CORPORATION
                              PORTSMOUTH, VIRGINIA

                               SECOND AMENDMENT TO
                              COAL SALES AGREEMENT

         SECOND AMENDMENT, dated as of April 20, 1999 (this "Second Amendment"),
to COAL SALES AGREEMENT, dated as of December 15, 1986 (as amended, the
"Agreement") between COGENTRIX VIRGINIA LEASING CORPORATION, a Virginia
corporation ("Buyer") and ARCH COAL SALES COMPANY, a Delaware corporation
("Seller").

                                    RECITALS:

         A. Buyer, Enoxy Coal Sales, Inc. and Enoxy Coal, Inc. entered into the
Agreement as of December 15, 1986, pursuant to which Buyer agreed to purchase
from such entities coal for Buyer's power generating station located in
Portsmouth, Virginia.

         B. Concurrently with the execution of the First Amendment to Coal Sales
Agreement, dated as of September 29, 1995, ACS Coal Sales Company (as successor
to Enoxy Coal Sales, Inc.) and Cumberland River Coal Company (as successor to
Enoxy Coal, Inc.) each assigned their rights under the Agreement to Seller
effective as of such date.

         C. Buyer and Seller have entered into a Settlement Agreement, dated as
of March 11, 1999 (the "Settlement Agreement"), pursuant to which Buyer and
Seller have reached certain agreements regarding a proposed settlement of
pending litigation and arbitration disputes between them arising out of the
Agreement.

         D. In consideration for agreeing to enter into the Settlement
Agreement, and as a condition precedent to the dismissal of the litigation and
arbitration pending between the parties and the execution of a mutual settlement
and release by the parties, the parties have agreed to execute this Second
Amendment and amend the terms of the Agreement so that it accurately reflects
the agreements of the parties as set forth in the Settlement Agreement.

         NOW, THEREFORE, in consideration of the premises and the mutual
covenants contained herein, and for other valuable consideration, the receipt
and sufficiency of which is hereby acknowledged, the parties hereto hereby agree
as follows:

         SECTION 1. Amendment of Section 1.01 of Agreement. Section 1.01 of the
Agreement is hereby amended, effective as of the Effective Date (as hereinafter
defined), by adding the following paragraph as the second paragraph of such
section:


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         Notwithstanding the foregoing, nor anything else to the contrary
         contained in this Agreement, Buyer is not and shall not be obligated to
         burn coal as the only fuel source for the Station and may, at its
         option and in its sole discretion, burn alternative fuels at the
         Station in any and all such forms as it chooses and in such amounts as
         it deems appropriate at any time during the term of this Agreement;
         provided that Buyer's use of alternative fuels at the Station shall in
         no way affect its liability for shortfalls as described in Section
         1.03(b) hereof.

         SECTION 2. Amendment of Section 1.03 of Agreement. Section 1.03 of the
Agreement is hereby amended, effective as of the Effective Date, by deleting
such section in its entirety and replacing it with the following:

         Section 1.03. Quantities; Shortfall Amounts; Steam Interruption.

         (a) Buyer shall purchase and Seller shall sell 100% of the requirements
         of coal for the Station during the Operation Period. Buyer shall not,
         however, be obligated to order or purchase any minimum amount of coal
         during any calendar year. Notwithstanding the foregoing or any
         provision to the contrary contained in this Agreement, the parties
         hereto agree that the Seller shall not be obligated hereunder to sell
         Buyer more than 400,000 tons of coal during any calendar year, and
         Buyer shall not be required to purchase more than its requirements.
         While Buyer's requirements are not expected to exceed the annual
         minimum quantities set out in subsection (b) below, all such
         requirements shall be purchased from Seller hereunder, regardless of
         the actual quantity.

         (b) Notwithstanding the fact that the Buyer shall in no way be
         obligated to purchase any minimum amount of coal in any given calendar
         year, in the event that the Buyer orders less than the following
         amounts of coal in each given calendar year (each such amount, the
         "Annual Minimum"), the Buyer shall pay the Seller the amount per ton
         set forth below for the corresponding calendar year (each such amount,
         the "Shortfall Rate") for each ton by which the amount of coal ordered
         by Buyer during such calendar year falls below the Annual Minimum for
         such calendar year.



                  YEAR              ANNUAL MINIMUM            SHORTFALL RATE
                  ----              --------------            --------------
                  1999                [***] tons              $[***] per ton
                  2000                [***] tons              $[***] per ton
                  2001                [***] tons              $[***] per ton
                  2002                [***] tons              $[***] per ton
                  2003                [***] tons              $[***] per ton

         For the purposes of this Agreement and the determination of whether the
         Buyer has met the Annual Minimum for 2003, calendar year 2003 shall
         begin on January 1, 2003 and end on April 30, 2003. In addition,
         whether the

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[***] These portions of this exhibit have been omitted and filed separately
      with the Securities and Exchange Commission pursuant to a request for
      confidential treatment.




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         Buyer has met the Annual Minimum in any calendar year shall be based on
         the amount of coal ordered by the Buyer during such calendar year and
         not the calendar year in which the coal is actually delivered by Seller
         to Buyer.

         Following the end of each calendar year, Seller shall provide notice
         (the "Seller Shortfall Notice") to Buyer of Seller's claim of
         entitlement to payment hereunder for such calendar year. Such notice
         shall include the Seller's calculation (the "Seller Calculation") of
         the amount due for such calendar year (the "Shortfall Payment"), and a
         list of orders placed by the Buyer and received by Seller during such
         calendar year. Seller will provide Buyer such other documentation as
         Buyer reasonably requests to support the Seller Calculation. If the
         Buyer agrees with the Seller Calculation, it shall pay such amount to
         the Seller no later than thirty (30) days after its receipt of the
         Seller Shortfall Notice. If Buyer disputes the Seller Calculation, the
         Buyer shall pay the undisputed portion of the Seller Calculation to the
         Seller within thirty (30) days after its receipt of the Seller
         Shortfall Notice, and thereafter the parties shall work together to
         resolve such dispute to the mutual satisfaction of the parties. If
         Buyer and Seller are unable to resolve such dispute, such dispute shall
         be submitted to arbitration in accordance with the provisions of
         Article VII of this Agreement. Upon a resolution or a final
         determination as to the correct Shortfall Payment, Buyer shall pay to
         Seller the remaining unpaid Shortfall Payment for such calendar year,
         with interest thereon, as provided in Section 4.06 of this Agreement.

         Notwithstanding the foregoing or any other provision to the contrary
         contained in this Agreement, in the event that Buyer's orders for coal
         are reduced in any calendar year due to the occurrence of (i) a "force
         majeure" (as defined in Section 8.01 of this Agreement) or (ii) a
         suspension of shipments pursuant to Section 2.05 of this Agreement, the
         Annual Minimum for such calendar year shall be adjusted equitably based
         on the amount of coal the Buyer would have ordered in such calendar
         year had such events not occurred.

         (c) Notwithstanding the provisions of subsection (b) of this Section
         1.03 or any other provision to the contrary contained in this
         Agreement, if there occurs during any given calendar year an
         interruption or reduction in steam delivery occasioned by a Force
         Majeure (as that term is defined in Section 6(A) of each of those two
         certain Steam Purchase Contracts between Buyer and BASF Corporation
         ("BASF"), and between Buyer and Celanese Chemical, Inc. ("Celanese"),
         effective as of January 1, 1999, hereinafter referred to as the "Steam
         Contracts") declared by either BASF or Celanese, the Annual Minimum for
         such calendar year shall be reduced in accordance with the formula set
         forth on Schedule 1 hereto.

         SECTION 3. Amendment to Section 10.07. Section 10.07 of the Agreement
is hereby amended, effective as of the Effective Date, by adding the following
to the end of such section:



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         Buyer and Seller each agree that neither party will unreasonably
         withhold its consent to an assignment by the other party of its
         benefits or burdens under this Agreement. Seller acknowledges and
         agrees, however, that the consent of Buyer's lender will be required
         prior to any assignment by the Seller of this Agreement or its benefits
         or burdens hereunder. In addition, Seller acknowledges and agrees that
         it shall be a condition to any such assignment by Seller that either
         (i) such assignment be consented to by Arch Coal, Inc., a Delaware
         corporation ("ACI") and sole shareholder of the Seller, in its capacity
         as Guarantor under the Guarantee Agreement dated as of September 29,
         1995 given for the benefit of the Buyer (the "ACI Guarantee"), and that
         the ACI Guarantee shall be reaffirmed by ACI, or (ii) that the Buyer
         receive a guarantee of the assignee's obligations under this Agreement
         or other security, in each case adequate to protect the Buyer's
         interest to the same extent as is done by the ACI Guarantee, and in a
         form and issued by an entity which is in all material respects
         reasonably comparable to ACI and otherwise reasonably satisfactory to
         the Buyer.

         SECTION 4. New Schedule 1. The Agreement is hereby amended, effective
as of the Effective Date, by adding as Schedule 1 thereto the attached Schedule
1 to this Second Amendment.

         SECTION 5. Effectiveness. This Second Amendment shall become effective
(the "Effective Date") on the date that the parties execute a Mutual Release and
Settlement Agreement effecting the settlement and dismissal of all litigation
and arbitration pending between them, and not before such date. Should the
parties not reach such settlement and execute a mutual release of all claims
asserted in such litigation and arbitration by June 30, 1999, this Second
Amendment shall be void and of no effect.

         SECTION 6. No Other Amendments; Confirmation. Except as expressly
amended hereby, the provisions of the Agreement are, and shall remain, in full
force and effect and are hereby ratified and confirmed.

         SECTION 7. Governing Law; Counterparts. This Second Amendment and the
rights and obligations of the parties hereto shall be governed by, and construed
and interpreted in accordance with, the laws of the State of North Carolina.
This Second Amendment may be executed in any number of counterparts, all of
which counterparts, taken together, shall constitute one and the same
instrument.

         SECTION 8. Integration. The Agreement, as modified by this Second
Amendment, and the Mutual Release and Settlement Agreement referred to herein
represent the entire agreement of the parties hereto with respect to the subject
matter hereof, and there are no promises, undertakings, representations or
warranties by either party relative to the subject matter hereof not expressly
set forth therein.



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


BUYER:

COGENTRIX VIRGINIA LEASING CORPORATION

By: /s/ Bruno R. Dunn
    -----------------------------------

Title: Group Senior Vice President
       --------------------------------

SELLER:

ARCH COAL SALES COMPANY, INC.


By: /s/ John Eaves
    -----------------------------------

Title: President
       --------------------------------



ACKNOWLEDGED AND CONSENTED TO:

ARCH COAL, INC., as guarantor under that
certain Guarantee Agreement dated as of
September 29, 1995 which by its signature
below hereby reaffirms and confirms its
obligations thereunder


By: /s/ Henry Besten
    -----------------------------------

Title: Vice President
       --------------------------------



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                                   SCHEDULE 1

              FORMULA FOR DETERMINATION OF COAL REQUIRED FOR STEAM
                  PRODUCTION IN CONNECTION WITH ANNUAL MINIMUM
                       STEAM ADJUSTMENT FOR FORCE MAJEURE

Assumptions:

     1. Station's historic operation generates 7.6 lbs. of steam for each pound
        of coal consumed.

     2. One ton of coal equals 2000 lbs.


To determine adjustments to Annual Minimum due to reduction in steam generated
as a result of an event of Force Majeure under either the BASF or Celanese Steam
Contracts, apply the following formula:

    Number of pounds of steam
     not taken as a result of
         Force Majeure           /2,000 = Annual Minimum Steam
    -------------------------             Adjustment
             7.6

         For example, if during calendar year 1999 BASF suffers an event of
Force Majeure under the Steam Contract which prevents the Station from
delivering 50,000,000 pounds of steam, the Annual Minimum for such calendar year
would be reduced by 3,289.5 tons [50,000,000, divided by 7.6, divided by 2000].
Accordingly, if Buyer only orders [***] tons of coal during calendar year 1999,
Seller would be entitled to a Shortfall Payment equal to $[***];

         e.g.               [***]    Annual Minimum
                           -[***]    Annual Actual
                           ----------------------------------------------
                            [***]    Annual Shortfall
                           -[***]    Annual Minimum Steam Adjustment
                           ----------------------------------------------
                            [***]    Adjusted Shortfall


                             [***]   Adjusted Shortfall
                           x$[***]   Shortfall Rate
                           ----------------------------------------------
                           $ [***]   Shortfall Payment

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[***] These portions of this exhibit have been omitted and filed separately
      with the Securities and Exchange Commission pursuant to a request for
      confidential treatment.



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