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Exhibit 10
CONFIDENTIAL

FIRST AMENDMENT TO COAL PURCHASE AND SALES AGREEMENT

This First Amendment (the Amendment) to the Coal Purchase and Sales
Agreement by and between Massey Coal Sales Company, Inc. (Seller or Massey)
and Indiantown Cogeneration, L.P. (Buyer or Indiantown) dated as of
February 5, 2003 (the Agreement) is entered into this 21st day of August,
2003. Each of Buyer and Seller shall be referred to as a Party and
collectively, the Parties. Capitalized terms used but not defined herein
shall have the meanings given such terms in the Agreement.

RECITALS

WHEREAS, the Parties are subject to a price reopener pursuant to Section
3.1(d)(ii) of the Agreement; and

WHEREAS, the Parties have negotiated a new Contract Price, price reopener,
and other provisions to the Agreement and desire to include such new terms in
the Agreement.

NOW THEREFORE, in consideration of the foregoing premises and the
agreements contained herein, and for other good and valuable consideration, the
sufficiency of which is hereby acknowledged, the undersigned hereby agree as
follows:



|1. |  | Amendment.
|-- |  | ----------



| | (a) |  | Section 3.1(a) of the Agreement is hereby deleted in its
entirety and a new subsection (a) shall be added to read in its
entirety as follows:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
| | --- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
| |     |  | (a) Buyers Requirements. During the Agreement Term,
Seller agrees to sell and cause to be delivered to
Buyer, pursuant to Orders sent by Buyer to Seller in
accordance with Section 3.2, and Buyer agrees to
purchase, accept and pay for from Seller, Coal in an
amount to meet all of Buyers Coal requirements for
the Facility (Contract Quantity). Buyer has no
obligation to purchase any minimum quantity of coal
hereunder, but Seller shall not be obligated to supply
more than 110,000 Tons per month and 1,200,000 Tons
per calendar year during the Agreement Term (Maximum
Quantity). If Buyer requires more than the Maximum
Quantity, Buyer may purchase coal in any amounts over
such Maximum Quantity from any third party. Buyer
shall have the right to use fuels other than coal, as
it deems necessary for its operations.
Notwithstanding the foregoing quantity requirements,
Buyer shall have the right to purchase up to 50,000
Tons per year from any party, including parties other
than Seller, for test burn purposes (Test Burn Coal)
provided Buyer provides written notice to Seller of
its intent to purchase such Test Burn Coal in the
monthly schedule required by Section 3.2. If for any
month during the Agreement Term, Buyer intends to
utilize Test Burn Coal with





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| |     |  | a Btu value that is within 300 Btus of the Monthly
Weighted Average Guarantee for Btu/lb. in Exhibit A of
this Agreement, Buyer may, in its sole discretion,
offer Seller the option of supplying the Test Burn
Coal.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
| | --- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
| | (b) |  | Section 3.1(d)(i) of the Agreement is hereby deleted in its
entirety and new subsection (i) shall be added to read in its
entirety as follows:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|
| |     |  | (i) Contract Price. The price per Ton for Coal
delivered by Seller from August 1, 2003 up to and
including September 30, 2005 (and any deliveries made
thereafter that were scheduled to be delivered or were
otherwise to be delivered by Seller prior to September
30, 2005) to the Delivery Point shall be $33.00 per
Ton FOB Big Sandy or FOB Kanawha, adjusted for coal
quality pursuant to Article 5 and any transportation
charges pursuant to Section 3.3(a). For deliveries
after September 30, 2005 or at such other earlier time
as the Parties shall mutually agree in writing, the
Contract Price shall be determined pursuant to Section
3.1(d)(ii).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|
| | (c) |  | Section 3.1(d)(ii) of the Agreement shall be deleted in its
entirety and a new subsection (ii) shall be added to read in its
entirety as follows:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|
| |     |  | (ii) Coal Price Reopener. The Parties both
acknowledge that Buyers energy payment under the FPL
Power Purchase Agreement is tied to a coal index
established by Buyer and FPL and that Buyer desires to
have its cost of coal adjusted in accordance with the
same, or a comparable, coal index. Therefore, Buyer
desires Seller to participate in the process of
establishing a new base price for coal and an
appropriate escalation index that is agreeable to
Buyer, Seller and FPL. Notwithstanding any other
provisions of this Agreement to the contrary, the
Parties shall, upon the execution of this Agreement,
use their commercially reasonable best efforts to
develop and agree on a new Contract Price and price
adjustment mechanism that incorporates a coal index
that is agreeable to Seller and Buyer for deliveries
subsequent to September 30, 2005, or such earlier time
as the Parties may mutually agree. From and after the
date Buyer proposes a new Contract Price and price
adjustment mechanism, Seller shall have ninety (90)
days to review the proposed new Contract Price and
price adjustment mechanism and determine whether to
agree to the price calculated and mechanism
established using such proposal. Seller shall give
Buyer written notice whether it agrees with such
proposed new Contract Price and price adjustment
mechanism as soon as commercially practicable, but not
later than the expiration of such ninety (90) day
period. If Seller and Buyer do not agree on such new
Contract Price and price adjustment mechanism on or
before the end of such ninety

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| |  |  | (90) day period, either Party may elect to terminate
this Agreement as of a date that shall be one hundred
eighty (180) days from the date that Buyer sent the
proposed new Contract Price and price adjustment
mechanism to Seller. Seller shall continue delivering
Coal at the Contract Price in Section 3.1(d)(i) and
shall remain obligated to perform any obligations
arising prior to such termination pursuant to the
terms of this Agreement. If Seller agrees to such new
Contract Price and price adjustment mechanism, Seller
and Buyer shall amend this Agreement to incorporate
the terms and conditions of such new Contract Price
and price adjustment mechanism. If Buyers proposal
of and Sellers agreement to the new Contract Price
and price adjustment mechanism both occur on or before
April 15, 2005, Seller shall provide a rebate to Buyer
in the amount of $.50 per Ton for all Coal shipped
between October 1, 2003 and the earlier of the date
the new Contract Price becomes effective and September
30, 2004.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
| |  |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
| |  |  | Notwithstanding any other provisions of this Agreement
to the contrary, should the Seller, Buyer, and FPL not
develop, propose and agree upon a coal index, new
Contract Price and price adjustment mechanism prior to
September 30, 2005, by no earlier than one hundred and
eighty (180) days prior to and no later than one
hundred and sixty (160) days prior to October 1,
2005, either Party can notice the other Party to begin
negotiations to revise the Contract Price, Contract
Quantity and Quality, and other financial terms for
deliveries subsequent to October 1, 2005 and an
appropriate adjustment mechanism to reflect the
then-market price of Coal which market price shall be
determined by mutual agreement of the Parties. The
Parties shall meet within ten days following the
receipt of the notice to begin negotiations. If the
Parties have not agreed on such terms by one hundred
and twenty days (120) days before October 1, 2005,
each Party shall within ten (10) days send a written
notice to the other Party appointing a senior
executive to attempt to resolve the matter. The
executives shall confer in person or by telephone
within ten (10) days of the Parties receipt of notice
of their appointment in an attempt to agree on such
new terms. In any event, if the Parties have not
agreed on such new terms by July 1, 2005, either Party
may, for any reason and acting in its sole discretion,
terminate this Agreement as of September 30, 2005,
provided that, such Party gives prompt written notice
to the other Party of its intent to terminate the
Agreement at least five (5) days prior to such
termination, and, provided further that, the Parties
shall remain obligated to perform any obligations
arising prior to such termination pursuant to the
terms of this Agreement.

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| |     |  | Notwithstanding anything to the contrary herein,
nothing in this Agreement shall prevent the Buyer from
soliciting proposals and establishing alternative coal
arrangements at any time with other suppliers for
deliveries made after the termination of this
Agreement.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
| | --- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
| | (d) |  | Section 3.3(a) of the Agreement shall be deleted in its
entirety and a new subsection (a) shall be added to read in its
entirety as follows:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|
| |     |  | (a) Unless otherwise agreed by the Parties in
writing, Seller shall deliver all Coal to Buyer FOB
Unit Train(s) at the mine loadout at the CSX Big Sandy
rate district, provided that, Seller may deliver Coal
FOB Unit Train(s) at the mine loadout at the Kanawha
rate district provided that Seller shall pay Buyer for
any differences in railroad freight charges between
such two delivery points, up to $1.30 per Ton which
will be netted against the Contract Price in Section
3.1(d)(i). Buyer will inform Seller of the railroad
freight differences on a quarterly basis as Buyer
receives notices of such adjustments from the
Transporter. Title to and risk of loss of the Coal
will pass to Buyer upon completion of loading all
railcars in each Unit Train and release to
Transporter. Coal haulage or transportation
equipment, shall be clean, dry and suitable for the
transportation of coal and heat shall not be applied
to railcars for the purposes of thawing frozen Coal
contained in the railcars, and unless otherwise
agreed, Buyer shall furnish suitable Unit Trains in
load ready condition for loading and delivery of the
Coal compatible with Sellers loading facilities.
Railcars shall not be loaded by any method which would
place undue stress on the top chords or sides of the
railcar. Seller shall not alter or change any
identifying marks on the railcars without Buyers
prior written consent. If the Delivery Point is at a
Source such that the Coal will have been transported
by Unit Train prior to delivery, then title to and
risk of loss of the Coal will pass to Buyer upon the
earlier to occur of (x) the safe and proper placement
of the Unit Trains at the Delivery Point or (y) other
transfer of the custody and control of the Unit Trains
to Buyer or Buyers Transporter. Seller shall accept
Unit Trains upon arrival at Source twenty-four (24)
hours a day, seven (7) days a week, except Holidays,
provided Seller receives notice from Transporter.
Loading and scheduling coordination will be in
compliance with Tariff CSXT 8200 Series. Except as
otherwise provided herein, the cost of all freight,
except for transportation penalties to the extent
attributable to Seller under Section 3.3, shall be
borne by Buyer. If and when on or after October 1,
2003, Buyer elects to utilize private railcars, Seller
shall pay Buyer $0.25 per Ton for Shipments
originating from CSX rate districts that have a higher
private railcar rate than the CSX Big Sandy rate
district. The Parties acknowledge and agree that the

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| |     |  | charges provided in this Section 3.3(a) related to
freight and utilization of private railcars shall no
longer apply upon the Parties agreement, if any, to
the new Contract Price and price adjustment mechanism
provided in Section 3.1(d)(ii).                                                                                                                                                                                                                                                                                                                                                     
| | --- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
| | (e) |  | The third sentence of Article 7.1(a) of the Agreement shall
be deleted in its entirety and replaced with the following:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|
| |     |  | By the later of (i) fifteen (15) days after receipt of
the Initial Invoice (or if such day is not a Business
Day, the immediately following Business Day); or (ii)
seven (7) days after receipt of the Final Invoice (or
if such day is not a Business Day, the immediately
following Business Day), the receiving Party shall
pay, by wire transfer in immediately available United
States funds, the undisputed amount set forth on such
Final Invoice along with the necessary information
enabling reconciliation to the relevant Shipment to
the applicable payment address provided in Exhibit C.
|
| | (f) |  | The first sentence of Article 7.3 of the Agreement shall be
deleted in its entirety and replaced with the following:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|
| |     |  | Each Party shall maintain accurate records relating to
coal sales and purchases pursuant to this Agreement
for a period of seven (7) years from the end of each
year during the Agreement Term.                                                                                                                                                                                                                                                                                                                                                                                                        
|
| | (g) |  | The following Section 14.12 Relationship with FPL shall be
added to the Agreement under Article 14:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|
| |     |  | Seller agrees that it shall not pursue any claim
against FPL for any indirect, incidental or
consequential damages that Seller may incur from the
performance, nonperformance or delay in performance by
FPL of its obligations in the FPL Power Purchase
Agreement.                                                                                                                                                                                                                                                                                                                                   
|
| | (h) |  | Article 15 of the Agreement is hereby amended by adding the
following definitions:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|
| |     |  | Test Burn Coal shall have the meaning set forth in
Section 3.1(a).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   



|2. |  | Effective Date. Unless otherwise specified in the provisions of this
Amendment, this Amendment shall be effective the later of (i) the date set
forth in the preamble of this Amendment; and (ii) the date on which
Buyers Financing Parties and independent engineer consent to Buyers
execution of this Amendment.
|-- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|  
|3. |  | Confidentiality. This Amendment shall be confidential and subject to the
confidentiality provision contained in Section 14.3 of the Agreement.                                                                                                                                                                        

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|4. |  | Governing Law. This Amendment shall be governed by and construed in
accordance with the laws of the State of Delaware without giving effect to
principles of conflicts of laws.                                                                                                                                                                                                                                                        
|-- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|  
|5. |  | Severability. If it is determined by a court of competent jurisdiction
that any provision of this Amendment is invalid under applicable law, such
provision shall be ineffective only to the extent of such prohibition or
invalidity, without invalidating the remainder of this Amendment.                                                                                                                                           
|  
|6. |  | Entire Agreement; Amendments; Interpretation. No amendment, modification
or change to this Amendment or the Agreement shall be enforceable unless
reduced to a writing executed by the party against whom such amendment,
modification or change is sought to be enforced and specifically
referencing this Amendment or Agreements, as the case may be. Except as
amended hereby, the Agreement shall remain in full force and effect.
|  
|7. |  | Counterparts. This Amendment may be executed in counterparts.                                                                                                                                                                                                                                                                                                                                                                          
|  
|8. |  | Headings. Descriptive headings are for convenience only and shall not
control or affect the meaning or construction of any provision of this
Amendment.                                                                                                                                                                                                                                                                                
|  
|9. |  | Force and Effect of Agreement. Except as otherwise specifically amended
or modified herein, the terms and conditions of the Agreement shall remain
in full force and effect.                                                                                                                                                                                                                                                           

IN WITNESS WHEREOF, the Parties, by their duly authorized representatives,
have executed this Amendment as of the date first written above.

| |  |                                 |  |                                                     
| |  | ------------------------------- |  | ----------------------------------------------------
| |  | INDIANTOWN COGENERATION, L.P.  
| |  |                                 |  |                                                     
| |  |                                 |  |                                                     
| |  | By:
Name:
Title:                |  | /s/ F. JOSEPH FEYDER
F. Joseph Feyder
Vice President
| |  |                                 |  |                                                     
| |  |                                 |  |                                                     
| |  |                                 |  |                                                     
| |  | MASSEY COAL SALES COMPANY, INC.
| |  |                                 |  |                                                     
| |  |                                 |  |                                                     
| |  | By:
Name:
Title:                |  | /s/ TOM DOUGHERTY
Tom Dougherty
Vice President      

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