NATIONAL STEEL CORP
8-K, 1997-06-26
STEEL WORKS, BLAST FURNACES & ROLLING MILLS (COKE OVENS)
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<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION

                            Washington, D.C.  20549



                                  FORM  8 - K

                                CURRENT REPORT



    PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934


       Date of Report (Date of earliest event reported):  June 12, 1997



                          NATIONAL  STEEL  CORPORATION
                                        
             (Exact name of registrant as specified in its charter)



                                   Delaware
                  (State or other jurisdiction incorporation)



            1-983                                         25-0687210
  (Commission File Number)                     (IRS Employer Identification No.)



4100 Edison Lakes Parkway,  Mishawaka, IN                 46545-3440
 (Address of principal executive offices)                 (Zip Code)


Registrant's telephone number, including area code:      219-273-7000
<PAGE>
 
ITEM 5.  ACQUISITION OR DISPOSITION OF ASSETS

On June 12, 1997, National Steel Corporation ("National") sold the machinery,
equipment, improvements and other personal property and fixtures constituting
the coke oven battery at its Great Lakes Division to EES Coke Battery Company,
Inc. ("EES") pursuant to an Asset Purchase Agreement with EES dated June 6, 1997
(the "Asset Purchase Agreement"). On June 12, 1997, National sold its coal
inventories at its Great Lakes Division to DTE Coal Services, Inc. ("DTE Coal")
pursuant to a Coal Inventory Purchase Agreement with DTE Coal dated June 6, 1997
(the "Coal Inventory Purchase Agreement"). National will continue to operate and
maintain the coke oven battery on a contract basis and will be obligated to buy
the majority of the coke produced at the facility over the next 12 years, to the
extent of its requirements. A copy of the Asset Purchase Agreement and Coal
Inventory Purchase Agreement are attached as exhibits hereto.

The purchase price for the coke oven battery was $233,884,172. The purchase
price for the coal inventories is equal to National's book value which is
approximately $9.5 million.

EES and DTE Coal are both wholly owned subsidiaries of DTE Energy Company ("DTE
Energy"). The Detroit Edison Company, another wholly owned subsidiary of DTE
Energy, supplies electricity to National's Great Lakes Division Facility. In
addition, National and PCI Enterprises Company ("PCI"), another wholly owned
subsidiary of DTE Energy, are parties to a Pulverized Coal Services Agreement
pursuant to which PCI supplies pulverized coal to National for use in the blast
furnaces at National's Great Lakes Division.


ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS

The following exhibits are being filed as a part of this report:

     Exhibit 2.1.   Asset Purchase Agreement dated as of June 6, 1997 between
                    EES Coke Battery Company, Inc. and National Steel
                    Corporation.

     Exhibit 2.2    Coal Inventory Purchase Agreement dated as of June 6, 1997
                    between DTE Coal Services, Inc. and National Steel
                    Corporation.


                                   SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.



                                             NATIONAL STEEL CORPORATION

Date: June 26, 1997                          By: /s/ John J. Moran, Jr.
                                                ------------------------------
                                                 John J. Moran, Jr.
                                                 Assistant Secretary



<PAGE>
 
                                 EXHIBIT INDEX
                                 -------------
<TABLE>
<CAPTION>
Exhibit
Number                                 Description
- -------                                -----------
<C>            <S>
2.1            Asset Purchase Agreement dated as of June 6, 1997 between EES
               Coke Battery Company, Inc. and National Steel Corporation

2.2            Coal Inventory Purchase Agreement dated as of June 6, 1997
               between DTE Coal Services, Inc. and National Steel Corporation
</TABLE>

<PAGE>
 
                                                                  EXECUTION COPY
================================================================================



                            ASSET PURCHASE AGREEMENT


                                 by and between

                         EES COKE BATTERY COMPANY, INC.

                                      and

                           NATIONAL STEEL CORPORATION



  For the Purchase and Sale of the Number 5 Coke Battery and Coke By-Products
                Production Facilities located at National Steel
          Corporation's Great Lakes Division in River Rouge, Michigan



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


                           Dated:  as of June 6, 1997


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



================================================================================
 
<PAGE>

                               TABLE OF CONTENTS

                                   ARTICLE I

                                  DEFINITIONS

<TABLE>
<CAPTION> 
                                                                                        Page
                                                                                        ----
<S>             <C>                                                                     <C>
SECTION 1.1     Defined Terms............................................................ 2
SECTION 1.2     Construction of Certain Terms and Phrases................................ 2

                                  ARTICLE II

     SALE OF ASSETS AND CLOSING
SECTION 2.1     Assets................................................................... 3
SECTION 2.2     Liabilities.............................................................. 3
SECTION 2.3     Purchase Price and Payment............................................... 4
SECTION 2.4     Closing.................................................................. 4
SECTION 2.5     Further Assurances....................................................... 5
SECTION 2.6     Third Party Consents..................................................... 5
SECTION 2.7     Taxes.................................................................... 5
SECTION 2.8     Property Tax Abatement................................................... 5

                                  ARTICLE III

     REPRESENTATIONS AND WARRANTIES OF NSC
SECTION 3.1     Power, Authority, No Contravention....................................... 6
SECTION 3.2     Third Party Consents and Governmental Approvals.......................... 6
SECTION 3.3     Litigation............................................................... 7
SECTION 3.4     Compliance With Laws..................................................... 7
SECTION 3.5     Complete Information..................................................... 7
SECTION 3.6     Status and Performance of Coke Facilities................................ 7
SECTION 3.7     Qualified for Section 29 Credits......................................... 7
SECTION 3.8     Financial Statements..................................................... 9
SECTION 3.9     No Intent to Defraud..................................................... 9
SECTION 3.10    Title.................................................................... 9

                                  ARTICLE IV

     REPRESENTATIONS AND WARRANTIES OF EES COKE
SECTION 4.1     Power, Authority, No Contravention.......................................10
SECTION 4.2     Litigation...............................................................10
SECTION 4.3     Financial Statements.....................................................10
SECTION 4.4     No Actual Knowledge of Inaccuracies......................................10

                                   ARTICLE V

     COVENANTS OF NSC
SECTION 5.1     Removal of Property......................................................11
SECTION 5.2     Pay Down of Debt.........................................................11
SECTION 5.3     Tax Position.............................................................11
SECTION 5.4     Air Emission Credits.....................................................11

                                  ARTICLE VI

     COVENANTS OF EES COKE
SECTION 6.1     Tax Position.............................................................12
SECTION 6.2     Securities and Exchange Act of 1934......................................12
SECTION 6.3     Enforcement of Confidentiality Agreements................................12
</TABLE>

<PAGE>

                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                                       Page
                                                                                       ----

                                  ARTICLE VII

<S>                                                                                    <C>
     CONDITIONS TO OBLIGATIONS OF ERS COKE
SECTION 7.1     Officers' Certificates...................................................12
SECTION 7.2     Governmental Approvals...................................................13
SECTION 7.3     Consents.................................................................13
SECTION 7.4     Opinion of Counsel.......................................................13
SECTION 7.5     Assignment and Assumption Instruments....................................13
SECTION 7.6     Project Contracts........................................................13
SECTION 7.7     Warranties...............................................................13
SECTION 7.8     Releases.................................................................13
SECTION 7.9     Title Insurance..........................................................14
SECTION 7.10    Air Operating Permit.....................................................14
SECTION 7.11    Operating Manual.........................................................14
SECTION 7.12    Independent Engineer Report..............................................14
SECTION 7.13    Environmental Fund Documents.............................................14
SECTION 7.14    Taxes....................................................................14

                                 ARTICLE VIII

     CONDITIONS TO OBLIGATIONS OF NSC
SECTION 8.1    Officers' Certificates....................................................15
SECTION 8.2    Assignment and Assumption Instruments.....................................15
SECTION 8.3    Opinion of Counsel........................................................15
SECTION 8.4    Governmental Approvals....................................................15
SECTION 8.5    Project Contracts.........................................................16
SECTION 8.6    Approval of Operating Manual..............................................16
SECTION 8.7    Approval of Closing Project Proforma......................................16
SECTION 8.8    Right of First Refusal from Lenders.......................................16
SECTION 8.9    Debt Service Ratio........................................................16
SECTION 8.10   Consents..................................................................16
SECTION 8.11   Releases..................................................................16
SECTION 8.12   Sale of Coal..............................................................16

                                  ARTICLE IX

     SURVIVAL OF REPRESENTATIONS AND WARRANTIES;
     NO OTHER REPRESENTATION AND WARRATIES
SECTION 9.1    Survival of Representations and Warranties................................16
SECTION 9.2    No Other Representations or Warranties....................................18
SECTION 9.3    Limitation of Liability...................................................18
SECTION 9.4    Indemnity Procedures......................................................18
</TABLE>

                                      ii
<PAGE>

                              TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                                      Page
                                                                                      ----
                                   ARTICLE X
<S>                                                                                   <C>
     MISCELLANEOUS
SECTION 10.1   Notices..................................................................20
SECTION 10.2   Entire Agreement.........................................................21
SECTION 10.3   Confidentiality..........................................................21
SECTION 10.4   Required Disclosure......................................................22
SECTION 10.5   Waiver...................................................................23
SECTION 10.6   Amendment................................................................23
SECTION 10.7   No Third Party Beneficiary...............................................23
SECTION 10.8   Assignment...............................................................23
SECTION 10.9   Headings.................................................................23
SECTION 10.10  Invalidity...............................................................24
SECTION 10.11  Counterparts.............................................................24
SECTION 10.12  Governing Law............................................................24
SECTION 10.13  Termination..............................................................24
</TABLE>



APPENDIX A               DEFINITIONS

EXHIBIT A           FORM OF NSC COUNSEL OPINION
EXHIBIT B           FORM OF EES COKE COUNSEL OPINION

SCHEDULE 2.1(a)     DESCRIPTION OF PROJECT ASSETS
SCHEDULE 2.1(b)     DESCRIPTION OF EXCLUDED ASSETS
SCHEDULE 2.2        DESCRIPTION OF ASSUMED LIABILITIES
SCHEDULE 2.3(a)     ALLOCATION OF PURCHASE PRICE
SCHEDULE 2.4        LIST OF ASSIGNMENT AND ASSUMPTION INSTRUMENTS
SCHEDULE 2.6        THIRD PARTY CONSENTS
SCHEDULE 3.2        GOVERNMENTAL APPROVALS
SCHEDULE 3.3        NSC LEGAL PROCEEDINGS
SCHEDULE 3.4        COMPLIANCE WITH LAWS
SCHEDULE 3.7        BATTERY START-UP AND BATTERY FUNCTIONAL TEST CERTIFICATES
SCHEDULE 4.2        EES COKE LEGAL PROCEEDINGS
SCHEDULE 5.1        NSC PROPERTY TO BE REMOVED FROM SITE

                                      iii
<PAGE>

                              TABLE OF CONTENTS

                                                                           Page 
                                                                           ----

SCHEDULE 7.7        WARRANTIES TO BE ASSIGNED TO EES COKE
SCHEDULE I          LIST OF NSC EMPLOYEES
SCHEDULE II         LIST OF BY-PRODUCTS SALES AGREEMENTS



Note:  The exhibits and schedules shown above are not included in this Form 8-K
filing. National Steel Corporation agrees to furnish supplementally copies of
these exhibits and schedules to the Commission on request.

                                      iv
<PAGE>
 
                           ASSET PURCHASE AGREEMENT


     THIS ASSET PURCHASE AGREEMENT (this "Agreement") is made and entered into
as of June 6, 1997 by and between EES COKE BATTERY COMPANY, INC., a Michigan
corporation, ("EES Coke") and NATIONAL STEEL CORPORATION, a Delaware corporation
("NSC") (EES Coke and NSC each a "Party" and collectively, the "Parties").


                                 RECITALS:

     1.   WHEREAS, NSC owns and operates the Number 5 coke battery (as described
in Schedule 2.1(a), the "Coke Battery"), and related by-products facilities and
ancillary equipment and fixtures (as described in Schedule 2.1(a), the "By-
Products Facility") relating thereto located at the Great Lakes Facility on Zug
Island, River Rouge, Michigan (the Coke Battery and By-Products Facility
collectively, the "Coke Facilities");

     2.   WHEREAS, NSC desires to sell, transfer and assign to EES Coke, and EES
Coke desires to purchase and acquire from NSC, the Coke Facilities and all other
Project Assets pursuant to the terms and conditions of this Agreement; and

     3.   WHEREAS, EES Coke has agreed to assume certain of the liabilities of
NSC in connection with the purchase of the Project Assets on the terms and
conditions set forth in this Agreement, and NSC has simultaneously agreed in a
separate Environmental Indemnity and Environmental Fund Agreement, dated as of
the date hereof, to indemnify EES Coke for certain potential environmental
claims and to establish a fund which EES Coke will have access to in the event
EES Coke incurs any liability as a result of non-compliance by NSC with certain
environmental laws; and

     4.   WHEREAS, EES Coke and NSC have simultaneously entered into certain
other Project Contracts.

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

                                       1
<PAGE>
 
                                   ARTICLE I

                                  DEFINITIONS

     SECTION 1.1  Defined Terms.  Unless otherwise indicated, capitalized terms
used in this Agreement or in any Exhibit or Schedule hereto shall have the
meanings set forth in Appendix A hereto.

     SECTION 1.2  Construction of Certain Terms and Phrases.  Unless the context
of this Agreement otherwise requires: (a) words of any gender include each other
gender; (b) words using the singular or plural number also include the plural or
singular number, respectively; (c) the terms "hereof", "herein", "hereby",
"hereto" and similar words refer to this entire Agreement and not any particular
Article, Section, Clause, Exhibit, Appendix or Schedule or any other subdivision
of this Agreement; (d) references to "Article", "Section", "Clause", "Exhibit",
"Appendix" or "Schedule" are to the Articles, Sections, Clauses, Exhibits,
Appendices and Schedules, respectively, of this Agreement; (e) the words
"include" or "including" shall be deemed to be followed by "without limitation"
or "but not limited to" whether or not they are followed by such phrases or
words of like import; and (f) references to "this Agreement" or any other
agreement or document shall be construed as a reference to such agreement or
document as amended, modified or supplemented and in effect from time to time
and shall include a reference to any document which amends, modifies or
supplements it, or is entered into, made or given pursuant to or in accordance
with its terms. Whenever this Agreement refers to a number of days, such number
shall refer to calendar days unless Business Days are specified. All accounting
terms used herein and not expressly defined herein shall have the meanings given
to them under generally accepted accounting principles as in effect on the
Closing Date.

                                       2
<PAGE>
 
                                  ARTICLE II

                          SALE OF ASSETS AND CLOSING

     Section 2.1  Assets. (a) Project Assets Transferred at Closing. On the
terms and subject to the conditions set forth in this Agreement, NSC shall sell,
assign, transfer and deliver to EES Coke, and EES Coke shall purchase, assume
and pay for, at the Closing, all of NSC's right, title and interest in and to
the Project Assets described in Schedule 2.1(a), free and clear of all Liens.

     (b)   Excluded Assets.  NSC is not selling or transferring to EES Coke any
of NSC's right, title or interest in and to the facilities, equipment and rights
described in Schedule 2.1(b) (the "Excluded Assets").

     Section 2.2  Liabilities. (a) Assumed Liabilities. In connection with the
sale, assignment, transfer and delivery of the Project Assets pursuant to this
Agreement, on the terms and subject to the conditions set forth in this
Agreement, at the Closing, EES Coke shall, from and after the Closing Date,
assume and agree to pay, perform and discharge when due only those obligations
of NSC arising in connection with the ownership, operation and maintenance of
the Coke Facilities and which are described in Schedule 2.2 (the "Assumed
Liabilities"), and no others. EES Coke shall discharge in a timely manner or
shall make adequate provision for any and all of the Assumed Liabilities,
including all liabilities under all Contracts or in respect of inventory
(including all purchase orders, advices or commitments), listed on Schedule 2.2.
EES Coke shall at all times indemnify and hold harmless NSC in respect of all
Assumed Liabilities, provided that EES Coke shall have the right to contest, in
good faith and through appropriate proceedings, any claim or liability asserted
in respect thereof by any Person.

     (b)  Apportionment of Certain Accrued Liabilities.  The following items
shall be apportioned as of 11:59 p.m. of the day immediately preceding the
Closing Date:

          (i)  Property Taxes shall be pro-rated on a due date basis.  A due
     date basis means that Property Taxes are deemed to have been paid with
     respect to the twelve (12) month period following the date that the taxes
     initially become due and payable; and

          (ii) amounts due or accrued as of the Closing Date on any Contracts
     constituting Assumed Liabilities pursuant to paragraph (a) above;

                                       3
<PAGE>
 
provided that no such item shall be apportioned if the amount accrued for such
item as of the Closing Date is less than five thousand dollars ($5,000), and EES
Coke shall be responsible for payment of all such non-apportioned items.

     (c)   Retained Liabilities.  Except for the Assumed Liabilities, EES Coke
shall not assume by virtue of this Agreement or the transactions contemplated
hereby, and shall have no liability for, any Liabilities of NSC related to the
Project Assets of any kind, character or description whatsoever (the "Retained
Liabilities"). NSC shall discharge in a timely manner or shall make adequate
provision for any and all of the Retained Liabilities, including all liabilities
of NSC under all Contracts or in respect of inventory (including all purchase
orders, advices or commitments), not described in Schedule 2.2. NSC shall at all
times indemnify and hold harmless EES Coke in respect of all Retained
Liabilities, provided that NSC shall have the right to contest, in good faith
and through appropriate proceedings, any claim or liability asserted in respect
thereof by any Person.

     Section 2.3  Purchase Price and Payment. (a) The purchase price for the
Project Assets to be sold, assigned, transferred and delivered to EES Coke shall
be Two Hundred Thirty-Three Million Eight Hundred Eighty-Four Thousand One
Hundred Seventy-Two Dollars ($233,884,172) (the "Purchase Price"). Except as
otherwise agreed to by the Parties, the Purchase Price shall be deemed to be
allocated among the Project Assets as set forth on Schedule 2.3(a), and the
Parties agree to file all tax reports, returns and claims and other statements
consistent with such allocation and shall not make any inconsistent written
statement or take any inconsistent position on any returns, on any refund claim,
during the course of any Internal Revenue Service or other tax audit or appeal,
for any financial or regulatory purpose, in any litigation or any investigation
or otherwise, so long as there exists a reasonable basis in law to maintain such
allocation.

     (b)   At Closing, EES Coke shall pay to NSC the Purchase Price in
immediately available funds by wire transfer into an account of NSC (as
designated in writing by NSC).

     Section 2.4  Closing. The Closing shall take place at the offices of Hunton
& Williams, 1900 K Street, N.W., Washington, D.C. 20006, on the Closing Date, or
at such other place and time as NSC and EES Coke mutually agree. Simultaneously
with the delivery of the cash consideration referred to in Section 2.3, at the
Closing each of NSC and EES Coke shall execute and deliver or cause to be
executed and delivered all documents listed on Schedule 2.4 (collectively, the
"Assignment and Assumption Instruments"). The Closing shall be effective as of
12:01 A.M. on the Closing Date.

                                       4
<PAGE>
 
     Section 2.5  Further Assurances. On the terms and subject to the conditions
of this Agreement, at any time or from time to time after the Closing, each of
EES Coke and NSC, without further compensation, shall execute and deliver such
other instruments of sale, assignment, assumption, transfer, delivery and
confirmation, provide such materials and information and take such other actions
as either Party may reasonably deem necessary in order to give effect to the
rights of EES Coke and NSC hereunder.

     Section 2.6  Third Party Consents. On or before the Closing, NSC shall use
its commercially reasonable efforts to obtain and deliver to EES Coke, at NSC's
sole cost and expense, all third party consents and releases necessary to permit
NSC to sell, transfer, convey and assign all of its right, title and interest in
and to the Project Assets free and clear of all Liens ("Third Party Consents").
A list of all such Third Party Consents (other than Governmental Approvals) is
set forth on Schedule 2.6.

     Section 2.7  Taxes. EES Coke shall pay all transfer fees, sales, use and
value-added taxes or similar fees or Taxes and penalties with respect thereto in
connection with the execution and delivery of this Agreement or the sale,
assignment, transfer and delivery of the Project Assets as contemplated
hereunder regardless of which Party such Taxes may be imposed upon or assessed
against.

     Section 2.8  Property Tax Abatement. At NSC's reasonable request, EES Coke
shall diligently pursue, with NSC's cooperation, the transfer to EES Coke of the
Certificate and Abatement Agreement (each as defined in the Coke Sales
Agreement) relating to the Coke Battery in effect on the Closing Date and will
use its commercially reasonable efforts to amend such Certificate and Abatement
Agreement concerning the forgiveness of any obligation of NSC to repay to the
taxing jurisdictions the tax abatement benefits for the last four (4) years of
the twelve (12) years covered by such Certificate to the extent the Parties
agree that such an amendment is in the best interests of NSC. In addition, at
NSC's request, EES Coke shall, with NSC's cooperation, diligently contest any
action of a Governmental Authority seeking to increase (or to prevent the
reduction of) property taxes relating to the Coke Battery and, where reasonable
grounds exist to do so, diligently pursue all lawful means to obtain a reduction
of such property taxes. Notwithstanding the foregoing, EES Coke shall not be
obligated to pursue such matters unless NSC agrees to reimburse EES Coke for the
reasonable costs and expenses (including reasonable attorneys' fees) incurred by
EES Coke in connection with such actions.

                                       5
<PAGE>

                                  ARTICLE III
 
                     REPRESENTATIONS AND WARRANTIES OF NSC


     NSC hereby represents and warrants to EES Coke as of the date hereof and as
of the Closing Date as follows:

     Section 3.1  Power, Authority, No Contravention: (i) The execution of,
delivery of and performance under this Agreement by NSC (a) have been duly
authorized by all necessary corporate action of NSC, and this Agreement
constitutes the valid, binding and enforceable obligation of NSC, except as the
enforceability thereof may be limited by bankruptcy, insolvency, reorganization,
moratorium, other similar Laws now or hereafter in effect relating to or
affecting creditor's rights or the relief of debtors generally and by general
principles of equity and public policy and the discretion of the court before
which any proceeding therefor may be brought, whether enforceability is
considered in a proceeding in law or equity, and (b) do not violate or conflict
with any charter, bylaw, Law, Contract or obligation applying to NSC or any of
its properties, other than such violations and conflicts that would not
reasonably be expected to impair NSC's ability to perform in all material
respects its obligations under this Agreement; (ii) except as otherwise provided
on Schedule 2.6 or Schedule 3.2, no consent, approval, authorization or order of
any Governmental Authority or third party not already obtained is required with
respect to NSC in connection with its execution and delivery of and performance
of its obligations under this Agreement; and (iii) NSC is duly organized,
validly existing and in good standing under the Laws of its state of
incorporation and has the right, power and authority to enter into this
Agreement and to perform in all material respects its obligations hereunder.

     Section 3.2  Third Party Consents and Governmental Approvals. To the best
of NSC's Knowledge, all Third Party Consents (other than Governmental Approvals)
are described in Schedule 2.6. To the best of NSC's Knowledge, all material
Governmental Approvals related to the Coke Facilities and to the operations of
the Great Lakes Facility on Zug Island that are required to operate the Coke
Facilities substantially as currently operated are listed on Schedule 3.2.
Except as set forth in Schedule 3.2, all such Governmental Approvals are in full
force and effect. NSC shall use all reasonable efforts to assist EES Coke in
obtaining a transfer to EES Coke of those Governmental Approvals currently held
by NSC that are required by applicable Law to be in EES Coke's name after the
Closing Date.

                                       6
<PAGE>
 
     Section 3.3  Litigation. (a) Except as set forth on Schedule 3.3, there is
no pending or, to the best of NSC's Knowledge, threatened action, suit,
investigation, arbitration or other proceeding that would reasonably be expected
to have a material adverse impact individually or in the aggregate on the
business or financial results of NSC or that would impair the ability of NSC to
perform its obligations under this Agreement and the other Project Contracts to
which it is a part y.

     (b)  To the best of NSC's Knowledge, there are no writs, judgments,
injunctions, decrees or similar orders of any Governmental Authority outstanding
against NSC which could reasonably be expected to materially adversely affect
the operation or maintenance of the Project Assets by EES Coke in substantially
the same manner as the Project Assets have been operated and maintained by NSC
within the twelve (12) months prior to the Closing Date; provided that NSC makes
no representation as to the ability of EES Coke to transfer into EES Coke's own
name the certificate of operation referred to in Section 3.7(d) below.

     Section 3.4  Compliance With Laws. Except as otherwise set forth in
Schedule 3.4, NSC is in compliance with the material provisions of all Laws
(including, but not limited to Environmental Laws) which are applicable to it or
its operations, except for non-compliance that would not reasonably be expected
to have a material adverse effect on NSC, EES Coke or the operation of the Coke
Facilities.

     Section 3.5  Complete Information. To the best of NSC's Knowledge, none of
the written information concerning the Project Assets provided by NSC to EES
Coke or EES Coke's technical consultants, taken as a whole and after giving
effect to any additional or subsequent written information provided by or on
behalf of NSC to EES Coke or its advisors, contains an untrue statement of a
material fact or omits to state any material fact necessary to make such written
information provided by NSC, in light of the circumstances under which it was
made, not misleading.

     Section 3.6  Status and Performance of Coke Facilities. The Project Assets
constitute all of the facilities and equipment needed to conduct the coke-making
activities and coke by-products production activities in a manner not materially
different from the manner in which such activities at the Coke Facilities have
been performed by NSC within the twelve (12) month period prior to the Closing
Date (other than those items to be provided to EES Coke pursuant to the Common
Facilities Agreement and the other Project Contracts).

     Section 3.7  Qualified for Section 29 Credits. To the best of NSC's
Knowledge: (a) no grants have been provided in connection with the construction
of the Coke Facilities by
                                       
                                       7
<PAGE>
 
the United States, a state, or a political subdivision of a state "for use in
connection with [any] project" (within the meaning of Section 29(b)(3)(A)(i)(I)
of the Code) which includes the Coke Facilities ("Grant"), and EES Coke
acknowledges and agrees that neither (i) the personal property tax abatement
obtained by NSC or any transfer thereof to EES Coke or any extension or
amendment thereof with respect to the Coke Facilities ("Abatement"), nor (ii)
the capital acquisition deductions ("CAD") to which NSC was entitled with
respect to costs relating to the Coke Facilities for purposes of the Michigan
Single Business Act Tax, as amended, MCLA (S) 208.1 et seq., will be treated as
a Grant for purposes of this representation and warranty;

     (b)  no proceeds of any issue of state or local government obligations have
been "used to provide financing for the project" within the meaning of Code
Section 29(b)(3)(A)(i)(II), which includes the Coke Facilities ("Proceeds"), and
EES Coke acknowledges and agrees that neither the Abatement nor the CAD will be
treated as Proceeds for purposes of this representation and warranty;

     (c)  no "subsidized energy financing" (within the meaning of Code Section
48(a)(4)(C)) has been "provided in connection with the project" (within the
meaning of Code Section 29(b)(3)(A)(i)(III)) which includes the Coke Facilities
("Subsidized Energy Financing"), and EES Coke acknowledges and agrees that
neither the Abatement nor the CAD will be treated as Subsidized Energy Financing
for the purposes of this representation and warranty;

     (d)  all licenses and permits related to air pollution, water pollution and
handling of hazardous or solid waste necessary to allow NSC to lawfully operate
the Coke Facilities and produce Coke had been obtained and were effective or
were deemed effective by operation of law no later than December 31, 1992 (other
than a certificate of operation from the Wayne County Department of Environment,
Air Quality Management Division) and all such licenses and permits (other than
the foregoing certificate of operation) have remained in effect since that date;
provided, however, that NSC did not obtain an operating permit under former
State Air Rule 208 promulgated pursuant to the Michigan Air Pollution Control
Act.

     (e)  the Coke Battery produced over 50,000 tons of Coke before January 1,
1993;

     (f)  the original undepreciated cost of the used property utilized in the
construction of the Coke Facilities was less than 20% of the cost of the Coke
Facilities before depreciation;

                                       8
 
<PAGE>
 
     (g)  NSC's employees began operating the Coke Battery for the production of
Coke on or about November 24, 1992;

     (h)  the Coke Battery first produced Coke on or about November 24, 1992;

     (i)  the Coke produced by the Coke Battery was satisfactory to NSC and was
used by NSC in its blast furnaces, and the Coke Battery has continued to produce
Coke since November 24, 1992 and has not been shut down except for routine
maintenance and repairs;

     (j)  NSC received a battery start-up certificate from Krupp Wilputte
Corporation and Eichleay Engineers, Inc. (collectively, the "General
Contractors") on or about November 25, 1992 pursuant to Section 12.3 of the
Agreement dated November 12, 1990 by and among NSC and the General Contractors
("Battery Agreement"), and NSC received a battery functional test certificate
from the General Contractors on or about November 25, 1992 pursuant to Section
12.2(c) of the Battery Agreement (a true copy of each of the battery start-up
certificate and the battery functional test certificate is attached hereto as
Schedule 3.7); and

     (k)  testing of the Coke Battery satisfactory to NSC that had taken place
before January 1, 1993 was sufficient to allow operation of the Coke Battery to
produce Coke before January 1, 1993.

     Section 3.8  Financial Statements. NSC has furnished EES Coke with copies
of NSC's most recent annual audited and quarterly unaudited balance sheets and
related statements of income, cash flows and changes in stockholder's equity
filed with the Securities and Exchange Commission ("SEC").

     Section 3.9  No Intent to Defraud. NSC is entering into this Agreement and
the other Project Contracts without the actual intent to hinder, delay or
defraud any creditor of NS C.

     Section 3.10  Title. Upon consummation of the purchase of the Project
Assets pursuant to the terms of this Agreement, EES Coke will have valid title
to and ownership of the Project Assets. Immediately prior to the consummation of
the purchase of the Project Assets, the Project Assets will not be subject to
any Liens.

                                       9
<PAGE>
 
                                  ARTICLE IV

                  REPRESENTATIONS AND WARRANTIES OF EES COKE


     EES Coke hereby represents and warrants to NSC as of the date hereof and as
of the Closing Date as follows:

     Section 4.1  Power, Authority, No Contravention: (i) The execution of,
delivery of and performance under this Agreement by EES Coke (a) have been duly
authorized by all necessary corporate action of EES Coke and this Agreement
constitutes the valid, binding and enforceable obligation of EES Coke, except as
the enforceability thereof may be limited by bankruptcy, insolvency,
reorganization, moratorium, other similar Laws now or hereafter in effect
relating to or affecting creditor's rights or the relief of debtors generally
and by general principles of equity and public policy and the discretion of the
court before which any proceeding therefor may be brought, whether
enforceability is considered in a proceeding in law or equity, and (b) do not
violate or conflict with any charter, bylaw, Law, Contract or obligation
applying to EES Coke or any of its properties, other than such violations and
conflicts that would not reasonably be expected to impair EES Coke's ability to
perform in all material respects its obligations under this Agreement; (ii) no
consent, approval, authorization or order of any Governmental Authority or third
party not already obtained is required with respect to EES Coke in connection
with its execution and delivery of and performance of its obligations under this
Agreement; and (iii) EES Coke is duly organized, validly existing and in good
standing under the Laws of its state of incorporation and has the right, power
and authority to enter into this Agreement and to perform in all material
respects its obligations hereunder.

     Section 4.2  Litigation. Except as otherwise set forth in Schedule 4.2,
there is no pending or, to the best of EES Coke's knowledge, threatened action,
suit, investigation, arbitration or other proceeding that would reasonably be
expected to have an adverse impact in the aggregate on the business or financial
results of EES Coke or that would impair the ability of EES Coke to perform its
obligations under this Agreement and the other Project Contracts.

     Section 4.3  Financial Statements. EES Coke has furnished NSC with copies
of DTE Energy's most recent audited annual and unaudited quarterly balance
sheets and the related statement of income, cash flows and stockholders' equity
filed with the SEC.

     Section 4.4  No Actual Knowledge of Inaccuracies. None of EES Coke nor any
of its Affiliates nor, to the actual knowledge of EES Coke, any of its advisors,
has actual knowledge that any of the representations or warranties made by NSC
in Article III
                                       10
<PAGE>
 
hereof are inaccurate in any respect that could have a material adverse effect
on EES Coke.

                                   ARTICLE V

                               COVENANTS OF NSC


     Section 5.1  Removal of Property. Within 60 days after the Closing Date,
NSC shall take all commercially reasonable steps to remove all assets and
properties of NSC described in Schedule 5.1 from the Coke Facilities and the
Leased Premises. Such removal shall be at the sole cost and risk of NSC,
including risk of loss and damage to such assets and properties.

     Section 5.2  Pay Down of Debt. On the Closing Date, NSC shall pay in full
the remaining balance of its loans from NUF and NCA used to finance the
construction of the Number 5 Coke Battery, unless NUF and NCA waive the due on
sale clause contained in NSC's loan agreements with NUF and NCA, and NSC
provides EES Coke a copy of such waiver in writing.

     Section 5.3  Tax Position. NSC shall not file any tax return or take any
position in connection with a tax audit or tax proceeding that is inconsistent
with the treatment of EES Coke as the owner of the Coke Facilities for federal
income tax purposes from and after the Closing except to the extent required by
Law or as agreed by the Parties, and upon the written request of EES Coke, NSC
will file or cause to be filed such returns, take or cause to be taken such
actions, and execute or cause to be executed such documents (collectively,
"Corrective Actions") as may be reasonably necessary to facilitate the
accomplishment of the intent hereof, provided that the taking of such Corrective
Actions shall be NSC's sole obligation and liability in respect of this Section
5.3.

     Secton 5.4  Air Emission Credits.  In the event that NSC permanently ceases
operating its blast furnaces on Zug Island, NSC shall sell to EES Coke, at then
existing fair market value rates, sufficient air emission credits to enable EES
Coke to modify the then-applicable air permit(s) for the Coke Facilities to
allow for the use of a substance other than blast furnace gas as the primary
fuel to underfire the Coke Facilities (the "Required Credits"); provided,
however, that NSC shall be under no obligation to sell the Required Credits to
EES Coke (a) to the extent NSC does not own sufficient air emission credits to
sell the Required Credits to EES Coke or (b) if EES Coke or any of its
Affiliates have sufficient air emission credits to permit EES Coke to so modify
the then-applicable air permit(s) and, provided further that NSC shall not sell
or otherwise transfer to any third party any air emission credits resulting from
the permanent cessation of operations of

                                       11
<PAGE>
 
NSC's blast furnaces or other facilities on Zug Island or at its Great Lakes
Facility without first offering to sell to EES Coke that portion of the Required
Credits which NSC is required to sell to EES Coke pursuant to this Section 5.4.

                                  ARTICLE VI

                             COVENANTS OF EES COKE

     Section 6.1  Tax Position. EES Coke shall not file any tax return or take
any position in connection with a tax audit or tax proceeding that is
inconsistent with the treatment of EES Coke as the owner of the Coke Facilities
for federal income tax purposes from and after the Closing except to the extent
required by Law or as agreed by the Parties.

     Section 6.2  Securities and Exchange Act of 1934. EES Coke will not take
any action that would result in it being subject to Section 13 or 15(d) of the
Securities and Exchange Act of 1934, as amended.

     Section 6.3  Enforcement of Confidentiality Agreements. EES Coke shall take
all lawful action reasonably necessary to enforce the confidentiality agreements
referred to in Section 10.3(b) and in the corresponding provisions of the other
Project Contracts.

                                  ARTICLE VII

                     CONDITIONS TO OBLIGATIONS OF EES COKE

     The obligations of EES Coke hereunder to purchase the Project Assets and to
assume, pay, perform and discharge the Assumed Liabilities are subject to the
fulfillment, at or before the Closing, of each of the following conditions (all
or any of which may be waived in whole or in part by EES Coke in its sole
discretion):

     Section 7.1  Officers' Certificates. NSC shall have delivered to EES Coke a
certificate executed by an authorized and responsible officer of NSC, dated the
Closing Date, certifying (i) that attached thereto is a true, correct and
complete copy of the Certificate of Incorporation for NSC as in effect on the
date of such certificate, (ii) that attached thereto is a true, correct and
complete copy of the resolutions adopted by the Board of Directors of NSC
authorizing the execution, delivery and performance of this Agreement and all
other documents delivered by NSC in connection herewith and that such
resolutions have not been modified, rescinded or amended and are in full force
and effect, (iii) that no action has been taken by NSC in contemplation of the
liquidation, dissolution, bankruptcy or insolvency of NSC, (iv) that each of the
representations and warranties of NSC set forth
                                      12
<PAGE>
 
in Article III of this Agreement is true and correct as of the Closing Date, and
(v) as to the incumbency and specimen signature of each representative of NSC
executing this Agreement and any other document delivered in connection
herewith.

     Section 7.2  Governmental Approvals. All Governmental Approvals necessary
to permit NSC and EES Coke to perform their respective obligations under this
Agreement and the other Project Contracts and to consummate the transactions
contemplated hereby and thereby shall have been duly obtained, made or given and
shall be in full force and effect and final and not subject to further review or
appeal, except as permitted under applicable Law, and the termination or
expiration of all waiting periods imposed by any Governmental Authority
necessary for the consummation of the transactions contemplated by this
Agreement and the other Project Contracts shall have occurred.

    Section 7.3  Consents. Each of the Third Party Consents (or in lieu thereof,
waivers) shall have been obtained by NSC and delivered to EES Coke and shall be
in full force and effect.

     Section 7.4  Opinion of Counsel. EES Coke shall have received the opinion
or opinions of counsel to NSC, dated the Closing Date, in the form attached
hereto as Exhibit A.   
 
     Section 7.5  Assignment and Assumption Instruments. NSC shall have executed
and delivered the Assignment and Assumption Instruments to EES Coke on or prior
to the Closing.         
 
     Section 7.6  Project Contracts. Each of the Project Contracts shall have
been executed by the parties thereto and delivered to EES Coke.

     Section 7.7  Warranties. On or before the Closing Date, NSC shall have,
pursuant to an assignment instrument reasonably satisfactory to EES Coke,
assigned or transferred to EES Coke all of the warranties and guarantees related
to the Coke Facilities or the Project Assets which are set forth on Schedule
7.7; provided that NSC shall have no obligation to assign any warranty or
guaranty listed on Schedule 7.7 to the extent (i) such warranty or guaranty may
be assigned only with the consent of the party providing such warranty or
guaranty and (ii) NSC has been unable to obtain such consent after reasonable
request therefor.

     Section 7.8  Releases. NSC shall have provided to EES Coke on or before the
Closing Date executed releases by NSC's lenders and other parties of all Liens
held by such lenders and other parties on the Coke Facilities, in form and
substance reasonably satisfactory to EES Coke.

                                      13
<PAGE>
 
     Section 7.9  Title Insurance. EES Coke shall have received a leasehold
title insurance policy and property descriptions in form and substance
reasonably satisfactory to EES Coke with respect to its interest in the Site and
the Coke Facilities.

     Section 7.10  Air Operating Permit. NSC shall have obtained a Certificate
of Operation from the Wayne County Department of Environment, Air Quality
Management Division with respect to the Coke Facilities as required by Law and
delivered a copy thereof to EES Coke which Certificate of Operation authorizes
operation of the Coke Facilities at production levels based upon 1.3 million
tons of charged material per year.

     Section 7.11  Operating Manual. NSC shall have delivered to EES Coke the
Operating Manual for the Coke Facilities and such Operating Manual shall have
been approved by NSC, EES Coke and the Independent Engineer.

     Section 7.12  Independent Engineer Report.  EES Coke shall have received a
report of Stone & Webster Management Consultants, Inc. in form and substance
satisfactory to EES Coke with respect to the Coke Facilities, the Site, the
Project Assets and such other matters as EES Coke deems necessary or advisable.

     Section 7.13  Environmental Fund Documents. The documentation establishing
the Environmental Fund required pursuant to the Environmental Indemnity and
Environmental Fund Agreement shall have been executed by NSC in the form of
Exhibit B attached hereto.

     Section 7.14  Taxes.  EES Coke shall have received evidence reasonably
satisfactory to it that all Taxes required to be paid by NSC on or before the
Closing Date in respect of the Project Assets or the Site have been timely paid
to the appropriate taxing authorities and that the filing of all documents
necessary to effect any of the releases referred to in Section 7.8 have been
duly made by NSC.

     Section 7.15  No Material Adverse Change in Circumstances. Since the date
of this Agreement, no event shall have occurred which shall have had a material
adverse effect on the operation of the Coke Facilities or the other transactions
contemplated by this Agreement and the other Project Contracts.

                                      14
<PAGE>
 
                                 ARTICLE VIII

                       CONDITIONS TO OBLIGATIONS OF NSC

     The obligations of NSC hereunder to sell, assign, transfer and deliver the
Project Assets are subject to the fulfillment, at or before the Closing, of each
of the following conditions (all or any of which may be waived in whole or in
part by NSC in its sole discretion):

     Section 8.1  Officers' Certificates. EES Coke shall have delivered to NSC a
certificate executed by an authorized and responsible officer of EES Coke, dated
the Closing Date, certifying (i) that attached thereto is a true, correct and
complete copy of the Certificate of Incorporation of EES Coke as in effect on
the date of such certificate, (ii) that attached thereto is a true, correct and
complete copy of the resolutions adopted by the Board of Directors of EES Coke
authorizing the execution, delivery and performance of this Agreement and all
other documents delivered in connection herewith and that such resolutions have
not been modified, rescinded or amended and are in full force and effect, (iii)
that no action has been taken by EES Coke in contemplation of the liquidation,
dissolution, bankruptcy or insolvency of EES Coke, (iv) that each of the
representations and warranties of EES Coke set forth in Article IV of this
Agreement is true and correct as of the Closing Date, and (v) as to the
incumbency and specimen signature of each representative of EES Coke executing
this Agreement, and any other document delivered in connection herewith.

     Section 8.2  Assignment and Assumption Instruments.  EES Coke shall have
executed and delivered the Assignment and Assumption Instruments to NSC at the
Closing.

     Section 8.3  Opinion of Counsel.  NSC shall have received the opinion of
counsel to EES Coke, dated the Closing Date, in the form and substance attached
hereto as Exhibit C.

     Section 8.4  Governmental Approvals. All Governmental Approvals necessary
to permit NSC and EES Coke to perform their respective obligations under this
Agreement and the other Project Contracts and to consummate the transactions
contemplated hereby and thereby shall have been duly obtained, made or given and
shall be in full force and effect and final and not subject to further review or
appeal, and the termination or expiration of all waiting periods imposed by any
Governmental Authority necessary for the consummation of the transactions
contemplated by this Agreement and the other Project Contracts shall have
occurred.

                                      15
<PAGE>
 
     Section 8.5  Project Contracts. Each of the Project Contracts shall have
been executed by the parties thereto and delivered to NSC.

     Section 8.6  Approval of Operating Manual. The Operating Manual for the
Coke Facilities shall have been approved by NSC, EES Coke and the Independent
Engineer.
 
     Section 8.7  Approval of Closing Project Proforma. NSC and EES Coke shall
have approved the Closing Project Proforma.

     Section 8.8  Right of First Refusal from Lenders. NSC shall have received
from the Lenders a right of first refusal reasonably satisfactory to NSC to
purchase the Coke Facilities in the event such Lenders ever obtain title to the
Coke Facilities.

     Section 8.9  Debt Service Ratio. EES Coke shall have obtained debt
financing upon terms satisfactory to EES Coke and the Closing Project Proforma
shall have at least a 1.4 to 1 average debt service coverage ratio over the term
of the debt financing.

     Section 8.10  Consents. Each of the Third Party Consents (or in lieu
thereof, waivers) shall have been obtained by NSC and shall be in full force and
effect.

     Section 8.11  Releases. On or before the Closing Date, NSC shall have
received executed releases by NSC's lenders and other parties of all Liens held
by such lenders and other parties on the Coke Facilities.

     Section 8.12  Sale of Coal.  Simultaneous with the Closing, DTE Coal shall
have purchased the Coal Inventory pursuant to the terms of and as defined in the
Coal Inventory Purchase Agreement.

     Section 8.13  No Material Adverse Change in Circumstances. Since the date
of this Agreement, no event shall have occurred which shall have had a material
adverse effect on the transactions contemplated by this Agreement and the other
Project Contracts.

                                  ARTICLE IX 

                 SURVIVAL OF REPRESENTATIONS AND WARRANTIES; 
                    NO OTHER REPRESENTATIONS AND WARRANTIES

     Section 9.1  Survival of Representations and Warranties. (a) The
representations and warranties of NSC set forth in Article III hereof (except as
to those under Section 3.7 and Section 3.10) and of EES Coke set forth in
Article IV hereof shall survive for a period of

                                      16
<PAGE>
 
two (2) years after Closing. Any claims with respect to a breach of a
representation and warranty made by a Party under this Agreement, except claims
made by EES Coke with respect to the representations and warranties set forth in
Section 3.7 and Section 3.10, shall be asserted by giving written notice to the
other Party (describing in reasonable detail the facts and circumstances
supporting such claim) within such two (2) year period; provided that the
survival period for the representations and warranties under Section 3.7 shall,
with respect to each taxable year for which EES Coke claims Section 29 credits
for the Coke produced from the Coke Facilities for such year, terminate at the
time the indemnity for such taxable year expires in accordance with the Tax
Indemnity Agreement. NOTWITHSTANDING THE FOREGOING AND FOR THE AVOIDANCE OF
DOUBT, THE PARTIES UNDERSTAND AND AGREE THAT NSC SHALL HAVE NO LIABILITY FOR
BREACH OF ANY REPRESENTATION OR WARRANTY MADE UNDER SECTION 3.7 HEREOF UNLESS
AND TO THE EXTENT SUCH BREACH IS THE RESULT OF FRAUD OR WILLFUL MISCONDUCT ON
THE PART OF NSC, AND ANY SUCH BREACH SHALL BE GOVERNED BY THE PROVISIONS OF THE
TAX INDEMNITY AGREEMENT. Any other claims for breaches of representations or
warranties hereunder shall be net of any tax benefits (the "Tax Benefits") and
insurance proceeds available to the claiming Party.

     (b)  In determining Tax Benefits in respect of any claim for a breach of a
representation or warranty pursuant to paragraph (a) above, the claiming Party
shall initially determine such Tax Benefits and shall certify the same to the
indemnifying Party. The indemnifying Party shall have the right to contest such
determination through the following procedures:

          (i)  The indemnifying Party and the claiming Party first shall meet to
     discuss such Tax Benefits and the calculation thereof. Prior to such
     meeting, the claiming Party shall provide to the indemnifying Party such
     information regarding the calculation of such Tax Benefits as the
     indemnifying Party may reasonably request; provided, however, that the
     indemnifying Party shall not have any right to examine any tax returns of
     the claiming Party or its consolidated filing group.

          (ii)  If within ten (10) days after such initial meeting the Parties
     have not resolved such dispute, the indemnifying Party may request that
     independent nationally recognized accountants selected by the claiming
     Party and reasonably satisfactory to the indemnifying Party (the "Tax
     Accountants") resolve such dispute. The claiming Party agrees to cooperate
     with such Tax Accountants and, subject to a confidentiality agreement
     reasonably satisfactory to the claiming Party, to provide such Tax
     Accountants with such information related to the calculation of the Tax
     Benefits as the Tax Accountants may reasonably request, provided that

                                       17
<PAGE>
 
     with respect to tax returns, the claiming Party shall be required to
     disclose to the Tax Accountants only such portions of the consolidated tax
     returns of the claiming Party as are directly relevant to the issue in
     dispute.

          (iii)  The Parties agree that the sole responsibility of the Tax
     Accountants shall be to verify the level of the Tax Benefits and that other
     matters of interpretation of this Agreement are not within the scope of the
     Tax Accountants' responsibility. The determination of the Tax Accountants
     as to the amount of such Tax Benefits shall be binding and conclusive on
     both Parties, absent manifest error.

          (iv)  The fees and expenses of the Tax Accountants shall be borne by
     the indemnifying Party unless the Tax Accountants determine that there is
     an adjustment in the indemnifying Party's favor, in which event such fees
     and expenses shall be borne by the claiming Party.

     Section 9.2  NO OTHER REPRESENTATIONS OR WARRANTIES.  EXCEPT FOR THE
REPRESENTATIONS AND WARRANTIES SPECIFICALLY SET FORTH ABOVE IN ARTICLE III, THE
PROJECT ASSETS WILL BE DELIVERED TO EES COKE "AS IS" AND "WHERE IS," WITHOUT ANY
EXPRESS OR IMPLIED REPRESENTATION OR WARRANTY OF ANY KIND, INCLUDING, WITHOUT
LIMITATION, ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.

     Section 9.3  Limitation of Liability.  Except as otherwise set forth in the
Environmental Indemnity and Environmental Fund Agreement or the Tax Indemnity
Agreement, neither Party shall have any indemnification or other liability with
respect to the breach of any representation or warranty that does not have a
material adverse effect on the other Party.  Except as may be expressly set
forth in the Tax Indemnity Agreement, neither Party shall be liable for special,
consequential or indirect damages with regard to any breach of a representation
or warranty set forth in this Agreement.  Under no circumstance shall either
Party be liable to the other Party for punitive damages.  NOTWITHSTANDING
ANYTHING HEREIN TO THE CONTRARY, NSC SHALL HAVE NO LIABILITY TO EES COKE OR ANY
OF ITS AFFILIATES FOR LOST TAX CREDITS EXCEPT TO THE EXTENT SPECIFICALLY SET
FORTH IN THE TAX INDEMNITY AGREEMENT.

     Section 9.4  Indemnity Procedures. (a) Final determination. The liability
of a Party required to make a payment (a "Payor") to the other Party (a "Payee")
for any Claims arising out of a breach of a representation or warranty in this
Agreement shall become fixed upon any of the following events (each a "Final
Determination"):

                                       18
<PAGE>
 
          (i)   the settlement of the Claim with written consent of the Payor;

          (ii)  a final decision with respect to the Claim by the appropriate
          court and the expiration of applicable appeal periods, unless such
          decision is appealed; or

          (iii) if appealed, a final non-appealable decision of a state or
          federal appellate court of last resort with respect to the Claim.

     (b)  Payment of Claim.  All payments required to be made in respect of a
Claim shall be made to the Payee within ten (10) days after the notice to the
Payor of the actual payment by the Payee of an amount constituting a loss in
respect of such Claim, but in no event earlier than ten (10) days after the
Final Determination of such Claim as provided in paragraph (a) above. For the
avoidance of doubt, Claims (if any) payable under the Tax Indemnity Agreement in
respect of the representations and warranties set forth in Section 3.7 hereof
shall be payable to the extent and at the time set forth in the Tax Indemnity
Agreement.

     (c)  Procedures.  (i)  The Payor may, at its option and at its expense,
contest and defend, and control the contest and defense of, any Claim with
respect to which it has agreed it will be liable to the Payee and with respect
to which it or the Payee is named as a party.

          (ii)  If the Payee is also named as a party to any proceeding, the
          Payee shall have the right to retain counsel at its own expense to
          advise it with respect to such contest and defense, and, unless the
          interests of the Payor and the Payee with respect to such Claim are
          adverse, the Payor shall (x) keep the Payee and its counsel reasonably
          informed as to the progress of such contest and defense, (y) to the
          extent reasonably practicable, give the Payee and its counsel the
          opportunity to review and comment in advance on all written
          submissions and filings relevant to the Claim, and (z) consider in
          good faith any reasonable suggestions made by the Payee or its counsel
          or the request of the Payee and its counsel to submit documentation or
          attend those portions of any meetings and proceedings that relate to
          the Claim.

          (iii)  The Payee shall notify the Payor in writing promptly of any
          potential Claim that could name the Payee as a party; provided, that
          the failure to provide the notice on time shall not reduce the Payor's
          obligations except to the extent of any additional losses suffered by
          the Payor or the Payee as a result of the Payee's failure to provide
          timely notice.

                                       19
<PAGE>
 
          (iv)  If after receipt of payment from the Payor in respect of a
          Claim the Payee shall later receive a payment from another source in
          respect of such Claim, the Payee shall promptly refund the amount of
          such payment to the Payor (provided that the Payee shall not be
          obligated to refund an amount in excess of the amount paid by the
          Payor to the Payee).

          (v)  The Payee shall not be indemnified by the Payor to the extent
          that the Payee has received payment for a Claim from another source.

          (vi)  The Payor shall pay to the Payee all reasonable costs and
          expenses incurred by the Payee in the enforcement of this Section 9.4,
          if (and only if) the Payor admits, or is adjudged, to have breached
          its obligation to indemnify the Payee for a Claim.

                                   ARTICLE X

                                 MISCELLANEOUS

     Section 10.1  Notices. All notices, requests and other communications
hereunder must be in writing and shall be delivered personally (by hand delivery
or by overnight courier), or by facsimile transmission (with receipt of
transmission confirmation), or mailed (certified mail postage prepaid) to the
Parties at the following addresses or facsimile numbers and shall be effective
upon receipt (when sent by personal delivery or certified mail) and upon receipt
of transmission confirmation (when sent by facsimile):

     If to NSC, to:

                   National Steel Corporation
                   Great Lakes Division
                   #1 Quality Drive
                   Ecorse, Michigan  48229

                   Attention:      Thomas Jere

                   Facsimile:      313-297-3651

                   and Attention:  Bill Wright

                   Facsimile:      313-297-3522

                                       20
<PAGE>
 
                         With a copy to NSC's General Counsel at the
                         following address and facsimile number:

                         National Steel Corporation
                         4100 Edison Lakes Parkway
                         Mishawaka, Indiana 46545-3440

                         Facsimile: 219-273-7868

     If to EES Coke, to:
                         EES Coke Battery Company, Inc.
                         425 South Main Street, Suite 201
                         Ann Arbor, Michigan 48104

                         Attention: Asset Manager

                         Facsimile: 313-668-9739

                         With a copy to EES Coke's Corporate Counsel at the
                         same address but at the following facsimile
                         number:

                         Facsimile: 313-668-8647

Either Party from time to time may change its address, facsimile number or other
information for the purpose of notices to such Party by giving notice specifying
such change to the other Party.

     Section 10.2  Entire Agreement.  This Agreement and the Project Contracts
to which NSC is a party constitute the entire agreement and understanding
between the Parties with respect to the subject matter herein and therein and
the transactions contemplated herein or therein and any and all previous
understandings, proposals, negotiations, agreements, commitments and
representations, whether oral or written, are merged herein or therein and are
superseded hereby or thereby. This Agreement shall be binding upon and inure to
the benefit of the Parties and their respective successors and permitted
assigns.

     Section 10.3  Confidentiality.  Each Party shall hold, and shall use its
best efforts to cause its Affiliates, and in the case of EES Coke, any Lender to
hold, in strict confidence from any other Person (other than any such Affiliate
or Lender) all documents and information

                                       21
<PAGE>
 
concerning the other Party or any of its Affiliates furnished to it by the other
Party in connection with this Agreement or the transactions contemplated hereby
and, in the case of EES Coke, all historical cost and historical production
information and all environmental information furnished to EES Coke or its
consultants, contractors or agents by NSC, unless (a) required to disclose any
such information by judicial or administrative process (including in connection
with obtaining from Governmental Authorities the necessary approvals of this
Agreement and the transactions contemplated hereby and of the other Project
Contracts) or by other requirements of Law, (b) disclosed in or pursuant to the
offering statement provided to potential purchasers of EES Coke's bonds issued
in connection with the acquisition of the Coke Facilities, provided that with
respect to the environmental remediation report referred to in such offering
statement, such potential purchasers shall be entitled to receive such report
only upon the execution and delivery to EES Coke (with a copy to NSC) of a
confidentiality agreement in form and substance reasonably satisfactory to NSC,
or (c) disclosed in an action or proceeding brought by either Party in pursuit
of its rights or in the exercise of its remedies hereunder. Notwithstanding the
foregoing, this Section 10.3 shall not apply to such documents or information
that were (i) previously known by the Party receiving such documents or
information, (ii) in the public domain (either prior to or after the furnishing
of such documents or information hereunder) through no fault of such receiving
Party, or (iii) later acquired by such receiving Party from another source if
such receiving Party is not aware that such source is under an obligation to the
other Party to keep such documents and information confidential. Following the
Closing, the foregoing restrictions shall cease to apply to EES Coke's use of
documents and information furnished by NSC hereunder concerning the Project
Assets or the Assumed Liabilities that are purchased or assumed, as the case may
be, by EES Coke at the Closing pursuant to Section 2.4; provided that, for the
avoidance of doubt, the provisions of this sentence shall not apply to any
historical cost or historical production information or any environmental
information furnished by NSC in connection with the transactions contemplated by
this Agreement or the other Project Contracts.

     Section 10.4  Required Disclosure.  Any Party required by Law or in the
course of administrative or judicial proceedings, to disclose information that
is otherwise required to be maintained in confidence pursuant to this Article X,
may make disclosure notwithstanding the provisions of this Article; provided,
however, that the Party making the disclosure shall give prior notice to the
other Party of the requirement and the terms thereof and shall cooperate to the
maximum extent practicable to minimize the disclosure of the information. The
Party disclosing such information shall use reasonable efforts, at the other
Party's cost, to obtain proprietary or confidential treatment of such
information by the third party to whom the information is disclosed, and to the
extent such remedies are available, shall use reasonable efforts to seek
protective orders limiting the
                                       22
<PAGE>
 
dissemination and use of the information at the other Party's cost. Moreover,
this Agreement does not alter the rights of either Party to object to the Law or
proceedings requiring the disclosure nor does it authorize EES Coke or any of
its Affiliates to disclose otherwise confidential information in connection with
any additional financing or refinancing of EES Coke (except in substantially the
same scope as the initial financing specified in Section 10.3(b) above).

     Section 10.5  Waiver.  Any term or condition of this Agreement may be
waived at any time by the Party that is entitled to the benefit thereof, but no
such waiver shall be effective unless set forth in a written instrument duly
executed by both Parties. The failure or delay of either Party to require
performance by the other Party of any provision of this Agreement shall not
affect its right to require performance of such provision unless and until such
performance has been waived by such Party in writing in accordance with the
terms hereof. No waiver by either Party of any term or condition of this
Agreement, in any one or more instances, shall be deemed to be or construed as a
waiver of the same or any other term or condition of this Agreement on any
future occasion. All remedies, either under this Agreement or by Law or
otherwise afforded, shall be cumulative and not alternative.

     Section 10.6  Amendment.  No modification or amendment of any provisions of
this Agreement shall be valid unless it is in writing and signed by both
Parties.

     Section 10.7  No Third Party Beneficiary.  The terms and provisions of this
Agreement are intended solely for the benefit of each Party and their respective
successors or permitted assigns, and it is not the intention of the Parties to
confer third-party beneficiary rights upon any other Person.

     Section 10.8  Assignment.  Neither this Agreement, nor any of the rights
and obligations hereunder, may be assigned, transferred or delegated
(collectively, an "Assignment") by either Party without the express prior
written consent of the other Party, which consent shall not be unreasonably
withheld or delayed (it being understood that, among other circumstances, it
shall not be unreasonable for NSC to withhold its consent to an Assignment by
EES Coke to an NSC Competitor), provided that EES Coke may assign its rights
and/or obligations under this Agreement in accordance with, and subject to the
terms and conditions of, the DTE Ownership Maintenance Agreement and the Consent
and Agreement.

     Section 10.9  Headings.  The headings contained in this Agreement are
solely for the convenience of the Parties and should not be used or relied upon
in any manner in the construction or interpretation of this Agreement.

                                       23
<PAGE>
 
     Section 10.10  Invalidity.  The invalidity or unenforceability of any
provision of this Agreement shall be determined only by a court of competent
jurisdiction. The Parties hereby agree to use good faith efforts to negotiate an
equitable adjustment to any provisions of this Agreement determined to be
invalid or unenforceable with a view toward effecting the purposes of this
Agreement, and the validity or enforceability of the remaining provisions of
this Agreement shall not be affected thereby.

     Section 10.11  Counterparts.  The Parties may execute this Agreement in
counterparts, which shall, in the aggregate, when signed by both Parties
constitute one and the same instrument; and, thereafter, each counterpart shall
be deemed an original instrument as against any Party who has signed it.

     Section 10.12  Governing Law.  This Agreement shall be governed by and
construed in accordance with the laws of the State of Michigan.

     Section 10.13  Termination.  If the Closing Date does not occur by June 30,
1997, either Party may terminate this Agreement by delivering written notice to
the other Party prior to the Closing Date.



                 [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       24
<PAGE>
 
     IN WITNESS WHEREOF, NSC and EES Coke have executed this Agreement by their
duly authorized signatories as of the date first above written.



                                   EES Coke Battery Company, Inc.



                                   By: /s/ Kent L. McCargar
                                       --------------------
                                       Name: Kent L. McCargar
                                       Title: CFO



                                   National Steel Corporation



                                   By: /s/ Bernard D. Henely
                                      ----------------------
                                      Name: Bernard D. Henely
                                      Title: Senior Vice President and
                                             General Counsel
<PAGE>
 
                                  APPENDIX A

                                  DEFINITIONS

     "Abatement" has the meaning ascribed to such term in Section 3.7(a).

     "Affiliate" means, with respect to any Person, any other Person that,
directly or indirectly, through one or more intermediaries, controls or is
controlled by or is under common control with such Person. For purposes of this
definition, "control" means the direct or indirect ownership of more than fifty
percent (50%) of the outstanding capital stock or other equity interests having
ordinary voting power.

     "Annual Operating Plan" has the meaning ascribed to it in the O&M
Agreement.

     "Asset Purchase Agreement" means the Asset Purchase Agreement, dated as of
June 6, 1997, by and between EES Coke and NSC, together with the Appendix,
Exhibits and Schedules thereto, pursuant to which, among other things, NSC shall
sell and EES Coke shall purchase the Project Assets.

     "Assignment" has the meaning ascribed to such term in Section 10.8.

     "Assignment and Assumption Instruments" has the meaning ascribed to it in
Section 2.4.

     "Assumed Liabilities" has the meaning ascribed to it in Section 2.2(a).

     "Battery Agreement" has the meaning ascribed to it in Section 3.7(j).

     "Business Day" means any day other than a Saturday or Sunday or other than
a day on which banks in the State of Michigan are authorized or required to be
closed.

     "By-Products" means the by-products resulting from the production of coke
from metallurgical coal in coke ovens and shall include, without limitation,
coke oven gas, coke breeze, tar, light oils and sodium phenolate.

     "By-Products Facility" has the meaning ascribed to it in Recital 1.

     "By-Products Sales Agreements" means each of the By-Products Sales
Agreements listed on Schedule II.

                                      A-1
<PAGE>
 
     "Claims" means with respect to any Person, any and all suits, sanctions,
legal proceedings, claims, assessments, judgments, damages, penalties, fines,
liabilities, demands, out-of-pocket costs, reasonable out-of-pocket expenses of
whatever kind (including reasonable attorneys' fees and expenses) and losses
incurred or sustained by or against such Person (but excluding any lost profits
or other special, incidental, indirect, punitive or consequential damages).

     "Closing" means the closing of the transactions contemplated by Section
2.4.

     "Closing Date" means the date on which there was satisfaction or waiver of
the conditions precedent specified in Article VII and Article VIII and the
Closing occurred.

     "Closing Project Proforma" means the project proforma agreed to and
initialed by the Parties on the Closing Date.

     "Coal Consulting Agreement" means the Coal and Transportation Consulting
Agreement, dated as of June 6, 1997, by and between NSC and DTE Coal pursuant to
which, among other things, NSC shall provide certain consulting services to DTE
Coal.

     "Coal Inventory Purchase Agreement" means the Coal Inventory Purchase
Agreement, dated as of June 6, 1997, by and between NSC and DTE Coal pursuant to
which, among other things, NSC shall sell and DTE Coal shall purchase certain
Coal Inventory as such term is defined therein.

     "Coal Supply Agreement" means the Coal Supply Agreement, dated as of June
6, 1997, by and between EES Coke and DTE Coal pursuant to which, among other
things, EES Coke shall purchase from DTE Coal metallurgical coal for use at the
Coke Facilities.

     "Code" means the Internal Revenue Code of 1986, as amended.

     "Coke" means the hard residue of carbon and original minerals in
metallurgical coal remaining in coke ovens after metallurgical coal is heated,
in the controlled absence of air, to 1,650 to 2,000 degrees fahrenheit.

     "Coke Battery" has the meaning ascribed to it in Recital 1.
   
     "Coke Facilities" has the meaning ascribed to it in Recital 1.
   
     "Coke Oven Gas Sales Agreement" means the Coke Oven Gas Sales Agreement,
dated as of June 6, 1997, by and between EES Coke and NSC pursuant to which,
among

                                      A-2
<PAGE>
 
other things, NSC shall purchase from EES Coke and EES Coke shall sell to NSC
coke oven gas.

     "Coke Sales Agreement" means the Coke Sales Agreement, dated as of June 6,
1997, by and between NSC and EES Coke pursuant to which, among other things, NSC
shall purchase Coke from EES Coke.

     "Commodities" has the meaning ascribed to such term in the Common
Facilities Agreement.

     "Common Facilities Agreement" means the Common Facilities Agreement, dated
as of June 6, 1997, by and between EES Coke and NSC providing for, among other
things, the provision of certain services to EES Coke.

     "Contract" means any agreement, lease, license, evidence of Indebtedness,
indenture, or other contract (including any design, construction, equipment or
other warranty or guarantee under any of the foregoing).

     "Consent and Agreement" means the Consent and Agreement, dated as of June
6, 1997, by and between NSC and NBD Bank, as Trustee under the Financing
Documents, and agreed to by EES Coke.

     "Corrective Action" has the meaning ascribed to such term in Section 5.3.

     "DTE Ownership Maintenance Agreement" means the Ownership Maintenance
Agreement, dated as of June 6, 1997, by and between NSC and DTE Energy, and
agreed to by EES Coke.

     "DTE Coal" means DTE Coal Services, Inc., a Michigan corporation.

     "DTE Energy" means DTE Energy Company, a Michigan corporation.

     "Duff & Phelps" means Duff & Phelps Credit Rating Co., a New York
corporation.

     "EES Coke" has the meaning ascribed to it in the first paragraph of this
Agreement.

     "Environmental Indemnity and Environmental Fund Agreement" means the
Environmental Indemnity and Environmental Fund Agreement, dated as of June 6,
1997, by and between NSC and EES Coke.

                                      A-3
<PAGE>
 
     "Environmental Law" means any applicable federal, state, local or
governmental legal requirement governing or relating to (i) the environment,
(ii) releases or threatened releases of Hazardous Materials including, without
limitation, investigations, monitoring and abatement of such releases, and (iii)
the manufacture, handling, transport, use, treatment, storage or disposal of
Hazardous Materials or materials containing Hazardous Materials.

     "Excluded Assets" has the meaning ascribed to such term in Section 2.1(b).

     "Financing Documents" means any and all loan agreements, notes, bonds,
indentures, security agreements, registration or disclosure statements,
subordination agreements, mortgages, deeds of trust, credit agreements, note or
bond purchase agreements, participation agreements and other documents relating
to the financing of the acquisition, ownership, operation or maintenance of the
Coke Facilities, and all other Project Assets and any refinancing thereof
provided by any Lender, including but not limited to any and all modifications,
supplements, extensions, renewals and replacements of any such financing or
refinancing.

     "General Contractors" has the meaning ascribed to such term in Section
3.7(j).

     "Governmental Approvals" means any authorization, consent, concession,
license, permit, waiver, privilege or approval from, or filing with, or notice
to, or certificate from any Governmental Authority.

     "Governmental Authority" means the federal government of the United States,
any state of the United States or political subdivision thereof, and any entity
exercising executive, legislative, judicial, regulatory or administrative
functions of or pertaining to government and any other governmental entity,
instrumentality, agency, authority or commission.

     "Grant" has the meaning ascribed to such term in Section 3.7.

     "Great Lakes Facility" means the Great Lakes Division of National Steel
Corporation, located in Ecorse and River Rouge, Michigan.

     "Ground Lease" means the Ground Lease, dated as of June 6, 1997, by and
among EES Coke, NSC and Delray Connecting Railroad Company providing for, among
other things, the granting to EES Coke of certain property interests in the
Site.

                                      A-4
<PAGE>
 
     "Ground Lessee Easements" has the meaning ascribed to such term in the
Ground Lease.

     "Hazardous Material" means (i) any petroleum or petroleum products,
radioactive materials, asbestos in any form that is or could become friable,
urea formaldehyde foam insulation, and transformers or other equipment that
contain dielectric fluid containing polychlorinated biphenyls ("PCBs") and any
other chemicals, materials or substances which are now or hereafter become
defined as or included in the definition of "hazardous substances", "hazardous
wastes", "hazardous materials", "extremely hazardous wastes", "restricted
hazardous wastes", "toxic substances" or "toxic pollutants" under, or are
regulated or become regulated as such by Environmental Laws, including but not
limited to the Comprehensive Environmental Response, Compensation, and Liability
Act of 1980, as amended (42 U.S.C. (S) 9601 et seq.); the Hazardous Material
Transportation Act, as amended (42 U.S.C (S) 1801 et seq.); the Resource
Conservation and Recovery Act, as amended (42 U.S.C. (S) 6901 et seq.); the
Toxic Substances Control Act, as amended (15 U.S.C. (S) 2601); the Clean Air
Act, as amended (42 U.S.C (S) 7401 et seq.); the Federal Water Pollution Control
Act, as amended (33 U.S.C. (S) 1251 et seq.); the Michigan Natural Resources and
Environmental Protection Act, as amended (MCLA (S) 324.101 et seq.); or in the
regulations promulgated pursuant to said Laws.

     "Indebtedness" means, as to any Person, all obligations of such Person (a)
for borrowed money, (b) evidenced by notes, bonds, debentures or similar
instruments, (c) for the deferred purchase price of goods or services (other
than trade payables or accruals incurred in the ordinary course of business),
(d) under capital leases, and (e) in the nature of guarantees of the obligations
described in clauses (a) through (d) above of any other Person.

     "Independent Engineer" means, initially, Stone & Webster Management
Consultants, Inc. and thereafter any other engineering or consulting entity
acting as Lender's or EES Coke's independent engineer.

     "Independent Environmental Consultant" means, initially, Geraghty & Miller
and thereafter any other consulting entity acting as Lender's or EES Coke's
independent environmental consultant.

     "Intellectual Property" means all patent rights, copyright rights,
formulae, processes, designs, methodologies, computer programs (including all
source codes) and related documentation, technical information and
manufacturing, engineering and technical

                                      A-5
<PAGE>
 
drawings, owned or controlled by NSC and used in connection with the ownership,
design, engineering, construction, operation or maintenance of the Coke
Facilities.

     "Investment Grade" means a rating in one of the four highest categories
(without regard to subcategories within such rating categories) by Standard &
Poor's or Moody's.

     "Late Payment Rate" means a rate of interest per annum equal to the lesser
of (i) two percent (2%) above the rate quoted for six (6) month London Interbank
Offered Rates (LIBOR) under the caption "Money Rates" in The Wall Street Journal
on the Due Date or required date of payment in question, which rate shall be
adjusted every six months thereafter, or (ii) the maximum rate of interest
permitted by applicable Law.

     "Law" means any law, statute, act, decree, ordinance, rule, directive (to
the extent having the force of law), order, final non-appealable judgment
directly applicable to the relevant Party, treaty, code or regulation (including
any of the foregoing relating to health or safety matters or any Environmental
Law) or any interpretation of any of the foregoing, as enacted, issued or
promulgated by any Governmental Authority, including all amendments,
modifications, extensions, replacements or re-enactments thereof.

     "Leased Premises" shall have the meaning ascribed to such term in the
Ground Lease.

     "Lender" means any Person or Persons providing debt financing or
refinancing under the Financing Documents to EES Coke for the acquisition,
ownership, operation and maintenance of the Coke Facilities and their permitted
successors and assigns, including any agent or trustee for such Person or
Persons.

     "Liabilities" means, as to any Person, all Indebtedness, obligations and
other liabilities of such Person (whether absolute, accrued, contingent, fixed
or otherwise, and whether due or to become due).

     "Lien" means any mortgage, pledge, security interest, lien, levy, charge or
other encumbrance of any kind whatsoever, or any conditional sale Contract,
title retention Contract or other Contract giving effect to any of the
foregoing, except for (a) any exceptions to title reasonably acceptable to EES
Coke which are contained in the title insurance policy for the Coke Facilities
and the Site in effect on the Closing Date, (b) liens for Property Taxes not yet
due and payable and (c) liens imposed by operation of law for amounts not yet
due and payable including, without limitation, carriers', materialmen's and
mechanics' liens.

                                      A-6
<PAGE>
 
     "Material Subsidiary" means, on any date of determination thereof, any
subsidiary of NSC that, for the twelve-month period ending on the last day of
the most recently concluded calendar quarter, had gross revenues in excess of
$50 million.

     "Moody's" means Moody's Investors Services, Inc., a Delaware corporation.

     "NCA" means NKK Capital of America, Inc., a Delaware corporation.

     "NSC" has the meaning ascribed to it in the first paragraph of this 
Agreement.

     "NSC Competitor" means any Person that is a competitor of NSC or any of its
Material Subsidiaries, provided that a Person who is a merchant coke producer
who is not also a steel producer or an Affiliate of a steel producer shall not
be deemed to be a competitor of NSC or any of its Material Subsidiaries.

     "NSC's Knowledge" or words of similar import shall mean the actual
knowledge of any officer of NSC on the Closing Date, any member of NSC's board
of directors on the Closing Date, or any NSC employee listed on Schedule I.

     "NUF" means NUF Corporation, a Delaware corporation.

     "O&M Agreement" means the Operation and Maintenance Agreement, dated as of
June 6, 1997, by and between NSC and EES Coke relating to, among other things,
the operation and maintenance of the Coke Facilities.

     "Operating Manual" has the meaning given such term in the O&M Agreement.

     "Payee" has the meaning ascribed to such term in Section 9.4.

     "Payor" has the meaning ascribed to such term in Section 9.4.

     "Payment Rate" shall mean a rate of interest per annum equal to one percent
(1%) above the rate quoted for six (6) month London Interbank Offered Rates
(LIBOR) under the caption "Money Rates" in the Wall Street Journal on the due
date or required date of payment in question, which rate shall be adjusted every
six months thereafter.

     "Permitted Liens" means (i) Liens specifically created, required or
permitted by the Project Contracts or the Financing Documents or otherwise
created by EES Coke, (ii) any exceptions to title which are contained in the
title insurance policy for the Coke

                                      A-7
<PAGE>
 
Facilities and the Site in effect on the Closing Date, (iii) Liens for Property
Taxes not yet due and payable, and (iv) Liens imposed by operation of law for
amounts not yet due and payable including, without limitation, carriers',
materialmen's and mechanics' liens; provided that, in the case of clauses (iii)
and (iv) above, if such Lien arises as a result of the failure of EES Coke to
pay directly or through the operator of the Coke Facilities the underlying
obligations relating thereto, then such Lien shall be deemed a "Permitted Lien".

     "Person" means any individual, corporation, partnership, joint venture,
association, business, trust, unincorporated organization, Governmental
Authority, limited liability company, or other entity.

     "Proceeds" has the meaning ascribed to such term in Section 3.7(b).

     "Project Assets" means the Coke Facilities and Spare Parts but shall not
include any of the Excluded Assets.

     "Project Contracts" means, collectively, this Agreement, the Assignment and
Assumption Instruments, the By-Products Sales Agreements, the Coal Inventory
Purchase Agreement, the Coal Supply Agreement, the Coke Oven Gas Sales
Agreement, the Coke Sales Agreement, the Common Facilities Agreement, the Ground
Lease, the O&M Agreement, the Tax Indemnity Agreement, the Environmental
Indemnity and Environmental Fund Agreement, the DTE Ownership Maintenance
Agreement, the Coal Consulting Agreement, the Consent to Assignment, and the
Technology License Agreement.

     "Property Taxes" means any tax levied and/or collected pursuant to the
Michigan General Property Tax Act (MCL, 211.1 et. seq.) and/or pursuant to the
Industrial Facilities Tax Abatement Act (MCL 201.557 et. seq.) or any future
legislation enacted in substitution therefor or in addition thereto where the
tax is calculated and levied by imposing a tax rate upon an amount based on the
value of real or personal property.

     "Prudent Operating and Maintenance Practices" has the meaning ascribed to
it in the O&M Agreement.

     "Purchase Price" has the meaning ascribed to it in Section 2.3.

     "Required Credits" has the meaning ascribed to it in Section 5.4.

     "Retained Liabilities" has the meaning ascribed to it in Section 2.2.

                                      A-8
<PAGE>
 
     "Site" has the meaning ascribed to it in the Ground Lease.

     "Spare Parts" means spare parts which meet all of the following conditions:
(a) are located at the Coke Battery or are otherwise capitalized or expensed to
the Coke Battery on NSC's accounting records, in each case as of the Closing
Date, (b) are being used or held for use in connection with, or otherwise
related to, the production, storage, transportation or marketing of Coke and By-
Products, and (c) consist of the normal complement of spare parts located at the
Coke Battery, and in any event shall include the Specified Capital Spare Parts.

     "Specified Capital Spare Parts" means the Spare Parts listed on Schedule
2.1(a).

     "Standard & Poor's" means Standard & Poor's Ratings Group, a New York
corporation.

     "Subsidized Energy Financing" has the meaning ascribed to such term in
Section 3.7(c).

     "Tax Accountants" has the meaning ascribed to it in Section 9.1(b)(ii).

     "Tax Benefits" has the meaning ascribed to it in Section 9.1(a).

     "Taxes" means any tax, charge, impost, tariff, duty or fee of any kind
charged, imposed or levied, directly or indirectly, by any Governmental
Authority, including any value-added tax, sales tax, stamp duty, import duty,
withholding tax (whether on income, dividends, interest payments, fees,
equipment rentals or otherwise), tax on foreign currency loans or foreign
exchange transactions, excise tax, property tax, registration fee or license,
water tax or environmental, energy or fuel tax including any interest, penalties
or other additions thereon.

     "Tax Indemnity Agreement" means the Tax Indemnity Agreement, dated as of
June 6, 1997, by and between EES Coke and NSC.

     "Technology License and Assignment Agreement" means the Technology License
and Assignment Agreement, dated as of June 6, 1997, by and between EES Coke and
NSC providing for, among other things, the use by EES Coke of certain
Intellectual Property owned by or under the control of NSC.

     "Third Party Consents" has the meaning ascribed to it in Section 2.6.

                                      A-9

<PAGE>
 
                                                                  EXECUTION COPY
================================================================================



                       COAL INVENTORY PURCHASE AGREEMENT


                                 by and between

                            DTE COAL SERVICES, INC.

                                      and

                           NATIONAL STEEL CORPORATION



                  For the Purchase and Sale of Coal Inventory
                   Associated With the Number 5 Coke Battery
                    located at National Steel Corporation's
                 Great Lakes Division in River Rouge, Michigan



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


                            Dated as of June 6, 1997

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



================================================================================
<PAGE>

                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                             Page
                                                             ----
                                   ARTICLE I
 
                                  DEFINITIONS
 
<C>           <S>                                            <C>
SECTION 1.1   Defined Terms..................................   1
SECTION 1.2   Construction of Certain Terms and Phrases......   2
 
                                  ARTICLE II
 
                       SALE OF COAL INVENTORY AT CLOSING
 
SECTION 2.1   Coal Inventory Transferred at Closing..........   3
SECTION 2.2   Retained Liabilities...........................   3
SECTION 2.3   Purchase Price and Payment.....................   3
SECTION 2.4   Closing........................................   4
SECTION 2.5   Further Assurances.............................   4
SECTION 2.6   Third Party Consents...........................   4
SECTION 2.7   Taxes..........................................   4
 
                                  ARTICLE III
 
                     REPRESENTATIONS AND WARRANTIES OF NSC
 
SECTION 3.1   Power, Authority, No Contravention.............   5
SECTION 3.2   Third Party Consents and Governmental Approvals   5
SECTION 3.3   Litigation.....................................   5
SECTION 3.4   Title..........................................   6
 
                                  ARTICLE IV
 
                  REPRESENTATIONS AND WARRANTIES OF DTE COAL
 
SECTION 4.1   Power, Authority, No Contravention.............   6
SECTION 4.2   Litigation.....................................   6
 
                                   ARTICLE V
 
                     CONDITIONS TO OBLIGATIONS OF DTE COAL

SECTION 5.1   Officers' Certificates.........................   7
SECTION 5.2   Consents and Approvals.........................   7

</TABLE>
<PAGE>
                              TABLE OF CONTENTS 
<TABLE>
<CAPTION>
                                                              Page
                                                              ----
<C>           <S>                                               <C>
SECTION 5.3   Opinion of Counsel.............................   7
SECTION 5.4   Bill of Sale...................................   7
SECTION 5.5   Project Contracts..............................   7
 
                                  ARTICLE VI
 
                       CONDITIONS TO OBLIGATIONS OF NSC
 
SECTION 6.1   Officers' Certificates.........................   7
SECTION 6.2   Opinion of Counsel.............................   8
SECTION 6.3   Project Contracts..............................   8
SECTION 6.4   Consents and Approvals.........................   8
 
                                  ARTICLE VII
 
                  SURVIVAL OF REPRESENTATIONS AND WARRANTIES;
                    NO OTHER REPRESENTATIONS AND WARRANTIES
 
SECTION 7.1   Survival of Representations and Warranties.....   8
SECTION 7.2   NO OTHER REPRESENTATIONS OR WARRANTIES.........   8
SECTION 7.3   Limitation of Liability........................   9
SECTION 7.4   Indemnity Procedures...........................   9
 
                                 ARTICLE VIII
 
                                 MISCELLANEOUS
SECTION 8.1   Notices........................................   9
SECTION 8.2   Entire Agreement...............................  10
SECTION 8.3   Confidentiality................................  10
SECTION 8.4   Required Disclosure............................  11
SECTION 8.5   Waiver.........................................  11
SECTION 8.6   Amendment......................................  12
SECTION 8.7   No Third Party Beneficiary.....................  12
SECTION 8.8   Headings.......................................  12
SECTION 8.9   Invalidity.....................................  12
SECTION 8.10  Counterparts...................................  12
SECTION 8.11  Governing Law..................................  12

</TABLE>
                                      ii
<PAGE>

                               TABLE OF CONTENTS


<TABLE>
<CAPTION>
                                                              Page
                                                              ----
<C>           <S>                                              <C>
SECTION 8.12  Effective Date.................................  12
</TABLE>














                                      iii
<PAGE>

                               TABLE OF CONTENTS

                                                                            Page
                                                                            ----



 
EXHIBIT A        FORM OF NSC COUNSEL OPINION
EXHIBIT B        FORM OF DTE COAL COUNSEL OPINION

SCHEDULE 2.3(a)  CALCULATION OF PURCHASE PRICE AND DESCRIPTION OF COAL INVENTORY
SCHEDULE 2.3(c)  METHODOLOGY FOR POST CLOSING ADJUSTMENT TO COAL INVENTORY
SCHEDULE 2.4     FORM OF BILL OF SALE
SCHEDULE 2.6     THIRD PARTY CONSENTS
SCHEDULE 3.2     GOVERNMENTAL APPROVALS
SCHEDULE 3.3     NSC LEGAL PROCEEDINGS
SCHEDULE 4.2     DTE COAL LEGAL PROCEEDINGS

Note:  The exhibits and schedules shown above are not included in this Form 8-K
filing. National Steel Corporation agrees to furnish supplementally copies of
these exhibits and schedules to the Commission on request.

                                      iv

<PAGE>
 
                       COAL INVENTORY PURCHASE AGREEMENT


     THIS COAL INVENTORY PURCHASE AGREEMENT (this "Agreement") is made and
entered into as of June 6, 1997 by and between DTE COAL SERVICES, INC., a
Michigan corporation ("DTE Coal"), and NATIONAL STEEL CORPORATION, a Delaware
corporation ("NSC") (DTE Coal and NSC each a "Party" and collectively the
"Parties").


                                   RECITALS:

     WHEREAS, NSC owns certain Coal Inventory associated with the Coke Battery;
and

     WHEREAS, NSC desires to sell, transfer and assign to DTE Coal, and DTE Coal
desires to purchase and acquire from NSC, the Coal Inventory pursuant to the
terms and conditions of this Agreement.

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


                                   ARTICLE I

                                  DEFINITIONS

     SECTION 1.1  Defined Terms.  (a) Capitalized terms defined in Appendix A to
the Asset Purchase Agreement have, unless the same are defined herein, the same
meaning when used herein.

     (b)  The following terms are used in this Agreement with the following
meanings:

     "Asset Purchase Agreement" means the Asset Purchase Agreement, dated as of
June 6, 1997 by and between EES Coke and NSC.

                                       1
<PAGE>
 
     "Bill of Sale" shall mean the Bill of Sale with respect to the Coal
Inventory in the form attached as Schedule 2.4.

     "Coal Inventory" means collectively, Coal-in-Ovens, Coal-in-Process and
Designated Coal Piles.

     "Coal Inventory Governmental Approval" has the meaning ascribed to such
term in Section 3.2.

     "Coal-in-Ovens" means the coal which is in the ovens of the Coke Battery as
of the Closing Date.

     "Coal-in-Process" means the coal in the mixing bins and coal located
elsewhere on the Site other than Coal-in-Ovens and coal in Designated Coal
Piles.

     "Coal-in-Transit" means any coal that NSC has title to as of the Closing
Date, but which has not yet been unloaded at Zug Island.

     "Coke Plant Annual Plan Raw Material Prices" has the meaning ascribed to
such term in Schedule 2.3(c).

     "Designated Coal Piles" means the piles of metallurgical coal stored on Zug
Island for use in the Coke Battery.

     "Purchase Price" has the meaning ascribed to it in Section 2.3(a).

     "Retained Liabilities" has the meaning ascribed to it in Section 2.2.

     "Third Party Consents" has the meaning ascribed to it in Section 2.6.

     SECTION 1.2  Construction of Certain Terms and Phrases.  Unless the context
of this Agreement otherwise requires: (a) words of any gender include each other
gender; (b) words using the singular or plural number also include the plural or
singular number, respectively; (c) the terms "hereof", "herein", "hereby",
"hereto" and similar words refer to this entire Agreement and not any particular
Article, Section, Clause, Exhibit, Appendix or Schedule or any other subdivision
of this Agreement; (d) references to "Article", "Section", "Clause", "Exhibit",
"Appendix" or "Schedule" are to the Articles, Sections, Clauses, Exhibits,
Appendices and Schedules, respectively, of this Agreement; (e) the words
"include" or "including" shall be deemed to be followed by "without limitation"
or "but not limited to" whether or not they are followed by such phrases or
words of like

                                       2
<PAGE>
 
import; and (f) references to "this Agreement" or any other agreement or
document shall be construed as a reference to such agreement or document as
amended, modified or supplemented and in effect from time to time and shall
include a reference to any document which amends, modifies or supplements it, or
is entered into, made or given pursuant to or in accordance with its terms.
Whenever this Agreement refers to a number of days, such number shall refer to
calendar days unless Business Days are specified. All accounting terms used
herein and not expressly defined herein shall have the meanings given to them
under generally accepted accounting principles as in effect on the Closing Date.


                                  ARTICLE II

                       SALE OF COAL INVENTORY AT CLOSING

     SECTION 2.1  (a) Coal Inventory Transferred at Closing.   On the terms and
subject to the conditions set forth in this Agreement, NSC shall sell, assign,
transfer and deliver to DTE Coal, and DTE Coal shall purchase, assume, pay for
and accept, at the Closing, all of NSC's right, title and interest in and to the
Coal Inventory free and clear of all Liens.
 
     (b)   Title to Coal-in-Transit. All of NSC's right, title and interest in
and to Coal-in-Transit will be transferred to DTE Coal at Closing in
consideration for EES Coke's obligations under the Assignment, Assumption and
Novation Agreements referred to in Section 2.2 below.
 
     SECTION 2.2  Retained Liabilities. DTE Coal shall not assume by virtue of
this Agreement or the transactions contemplated hereby, and shall have no
liability for, any Liability of NSC related to the Coal Inventory arising before
the Closing Date including any payment liability or obligation with respect to
the Coal Inventory that has not yet become due and payable (the "Retained
Liabilities"). NSC shall at all times indemnify and hold harmless DTE Coal in
respect of all Retained Liabilities, provided that NSC shall have the right to
contest, in good faith and through appropriate proceedings, any claim or
liability asserted in respect of the Coal Inventory by any Person. For the
avoidance of doubt it is understood by the Parties the "Retained Liabilities"
shall not include liabilities for Coal-in-Transit, which EES Coke hereby assumes
and will assume as a result of the Assignment, Assumption and Novation
Agreements, each dated as of May 10, 1997, or June 6, 1997, as the case may be,
by and between NSC and EES Coke and consented to by certain coal suppliers.

                                       3
<PAGE>
 
     SECTION 2.3  Purchase Price and Payment. (a) The purchase price for the
Coal Inventory to be sold, assigned, transferred and delivered to DTE Coal shall
be Nine Million Five Hundred Eighty Seven Thousand Four Hundred Fifty Four
Dollars ($9,587,454) (the "Purchase Price") as set forth and more specifically
described for each coal type in Schedule 2.3(a).

     (b)   At Closing, DTE Coal shall pay to NSC the Purchase Price in
immediately available funds by wire transfer into an account of NSC (as
designated in writing by NSC).

     (c)   Post Closing Adjustments. (i) The Purchase Price shall be adjusted no
later than forty-five (45) days after the Closing Date in the following manner:
(A) DTE Coal shall pay to NSC the amounts, if any, NSC has paid on or prior to
the Closing Date for Coal-In-Transit and for shipping costs relating to Coal-In-
Transit; and (B) based on an aerial inventory survey to be performed on or
around May 31, 1997 and an adjustment to the Coal Inventory based on the
methodology shown in Schedule 2.3(c), the Purchase Price shall be increased or
decreased by an amount equal to (x) the amount of the inventory adjustment for
each type of coal in the Designated Coal Piles multiplied by (y) the price for
"Receipts at Dry Per Net Ton" for such coal type set forth in Attachment A-5 of
Exhibit A to the Coke Sales Agreement, where DTE Coal shall pay to NSC any
increase in the Purchase Price or NSC shall refund to DTE Coal any decrease in
the Purchase Price resulting from this adjustment. All amounts due under this
Section 2.3(c)(i) shall be paid within thirty (30) days of the determination of
the amounts due with interest calculated using the Payment Rate for the period
from and including the Closing Date to but excluding the date payment is made.

     (ii)  The Purchase Price, as adjusted pursuant to Section 2.3(c)(i), shall
be further adjusted no later than forty-five (45) days after March 31, 1998
based on an aerial inventory survey to be performed on or around March 31, 1998
and an adjustment to the Coal Inventory based on the methodology shown in
Schedule 2.3(c), and shall be increased or decreased by an amount equal to (x)
the amount of the inventory adjustment for each type of coal in the Designated
Coal Piles multiplied by (y) the price for "Receipts at Dry Per Net Ton" for
such coal type set forth in Attachment A-5 of Exhibit A to the Coke Sales
Agreement, where DTE Coal shall pay to NSC any increase in the Purchase Price or
NSC shall refund to DTE Coal any decrease in the Purchase Price resulting from
this adjustment. All amounts due under this Section 2.3(c)(ii) shall be paid
within thirty (30) days of the determination of the amounts due with interest
calculated at six percent (6%) per annum for the period from and including the
Closing Date to but excluding the date payment is made.

                                       4
<PAGE>
 
     SECTION 2.4  Closing.  The Closing shall take place at the offices of
Hunton & Williams, 1900 K Street, N.W., Washington, D.C. 20006, on the Closing
Date, or at such other place and time as NSC and DTE Coal mutually agree.
Simultaneously with the delivery of the cash consideration referred to in
Section 2.3(a), at the Closing NSC shall execute and deliver, or cause to be
executed and delivered, to DTE Coal the bill of sale in form and substance
substantially as set forth on Schedule 2.4 ("Bill of Sale").

     SECTION 2.5  Further Assurances.  On the terms and subject to conditions of
this Agreement, at any time or from time to time after the Closing, each of DTE
Coal and NSC, without further compensation, shall execute and deliver such other
instruments of sale, assignment, assumption, transfer, delivery and
confirmation, provide such materials and information and take such other actions
as either Party may reasonably deem necessary in order to give effect to the
rights of DTE Coal and NSC hereunder.

     SECTION 2.6  Third Party Consents.  On or before the Closing, NSC shall use
its commercially reasonable efforts to obtain and deliver to DTE Coal, at NSC's
sole cost and expense, all third party consents and releases, other than
Governmental Approvals, necessary to permit NSC to sell, transfer, convey and
assign all of its right, title and interest in and to the Coal Inventory free
and clear of all Liens ("Third Party Consents"). A list of all such Third Party
Consents is set forth on Schedule 2.6.

     SECTION 2.7  Taxes.  DTE Coal shall pay all transfer fees, sales, use and
value-added taxes or similar fees or Taxes and penalties with respect thereto in
connection with the execution and delivery of this Agreement or the sale,
assignment, transfer and delivery of the Coal Inventory as contemplated
hereunder regardless of which Party such Taxes may be imposed upon or assessed
against.


                                  ARTICLE III

                     REPRESENTATIONS AND WARRANTIES OF NSC

     NSC hereby represents and warrants to DTE Coal as of the date hereof and as
of the Closing Date as follows:

     SECTION 3.1  Power, Authority, No Contravention: (i) The execution of,
delivery of and performance under this Agreement by NSC (a) have been duly
authorized by all necessary corporate action of NSC, and this Agreement
constitutes the valid, binding and enforceable obligation of NSC, except as the
enforceability thereof may be limited by bankruptcy, insolvency, reorganization,
moratorium, other similar Laws now or hereafter

                                       5
<PAGE>
 
in effect relating to or affecting creditor's rights or the relief of debtors
generally and by general principles of equity and public policy and the
discretion of the court before which any proceeding therefor may be brought,
whether enforceability is considered in a proceeding in law or equity, and (b)
do not violate or conflict with any charter, bylaw, Law, Contract or obligation
applying to NSC or any of its properties, other than such violations and
conflicts that would not reasonably be expected to impair NSC's ability to
perform in all material respects its obligations under this Agreement; (ii)
except as otherwise provided on Schedule 2.6 or Schedule 3.2, no consent,
approval, authorization or order of any Governmental Authority or third party
not already obtained is required with respect to NSC in connection with its
execution and delivery of and performance of its obligations under this
Agreement; and (iii) NSC is duly organized, validly existing and in good
standing under the Laws of its state of incorporation and has the right, power
and authority to enter into this Agreement and to perform in all material
respects its obligations hereunder.

     SECTION 3.2  Third Party Consents and Governmental Approvals.  To the best
of NSC's Knowledge, all Third Party Consents (other than Governmental Approvals)
are described in Schedule 2.6. To the best of NSC's Knowledge, all material
Governmental Approvals required to sell and transfer the Coal Inventory to DTE
Coal ("Coal Inventory Governmental Approval") are listed on Schedule 3.2. Except
as set forth in Schedule 3.2, all such Governmental Approvals are in full force
and effect.

     SECTION 3.3  Litigation.  Except as set forth on Schedule 3.3, there is no
pending or, to the best of NSC's Knowledge, threatened action, suit,
investigation, arbitration or other proceeding that would reasonably be expected
to have a material adverse impact individually or in the aggregate on the
business or financial results of NSC or that would impair the ability of NSC to
perform its obligations under this Agreement.

     SECTION 3.4  Title.  Upon consummation of the purchase and sale of the Coal
Inventory pursuant to the terms of this Agreement, DTE Coal will have valid
title to and ownership of the Coal Inventory.  Immediately prior to the
consummation of the purchase of the Coal Inventory, the Coal Inventory will not
be subject to any Liens.


                                  ARTICLE IV

                  REPRESENTATIONS AND WARRANTIES OF DTE COAL

     DTE Coal hereby represents and warrants to NSC as of the date hereof and as
of the Closing Date as follows:

                                       6
<PAGE>
 
     SECTION 4.1  Power, Authority.  No Contravention: (i) The execution of,
delivery of and performance under this Agreement by DTE Coal (a) have been duly
authorized by all necessary corporate action of DTE Coal and this Agreement
constitutes the valid, binding and enforceable obligation of DTE Coal, except as
the enforceability thereof may be limited by bankruptcy, insolvency,
reorganization, moratorium, other similar Laws now or hereafter in effect
relating to or affecting creditor's rights or the relief of debtors generally
and by general principles of equity and public policy and the discretion of the
court before which any proceeding therefor may be brought, whether
enforceability is considered in a proceeding in law or equity, and (b) do not
violate or conflict with any charter, bylaw, Law, Contract or obligation
applying to DTE Coal or any of its properties, other than such violations and
conflicts that would not reasonably be expected to impair DTE Coal's ability to
perform in all material respects its obligations under this Agreement; (ii) no
consent, approval, authorization or order of any Governmental Authority or third
party not already obtained is required with respect to DTE Coal in connection
with its execution and delivery of and performance of its obligations under this
Agreement; and (iii) DTE Coal is duly organized, validly existing and in good
standing under the Laws of its state of incorporation and has the right, power
and authority to enter into this Agreement and to perform in all material
respects its obligations hereunder.

     SECTION 4.2  Litigation.  Except as otherwise set forth in Schedule 4.2,
there is no pending or, to the best of DTE Coal's knowledge, threatened action,
suit, investigation, arbitration or other proceeding that would reasonably be
expected to have an adverse impact in the aggregate on the business or financial
results of DTE Coal or that would impair the ability of DTE Coal to perform its
obligations under this Agreement.


                                   ARTICLE V

                     CONDITIONS TO OBLIGATIONS OF DTE COAL

     The obligations of DTE Coal hereunder to purchase the Coal Inventory are
subject to the fulfillment, at or before the Closing, of each of the following
conditions (all or any of which may be waived in whole or in part by DTE Coal in
its sole discretion):

     SECTION 5.1  Officers' Certificates.  NSC shall have delivered to DTE Coal
a certificate executed by an authorized and responsible officer of NSC, dated
the Closing Date, certifying (i) that attached thereto is a true, correct and
complete copy of the Certificate of Incorporation for NSC as in effect on the
date of such certificate, (ii) that attached thereto is a true, correct and
complete copy of the resolutions adopted by the Board of Directors

                                       7
<PAGE>
 
of NSC authorizing the execution, delivery and performance of this Agreement,
and all other documents delivered by NSC in connection herewith and that such
resolutions have not been modified, rescinded or amended and are in full force
and effect, (iii) that no action has been taken by NSC in contemplation of the
liquidation, dissolution, bankruptcy or insolvency of NSC, and (iv) as to the
incumbency and specimen signature of each representative of NSC executing this
Agreement and any other document delivered in connection herewith.

     SECTION 5.2  Consents and Approvals.  Each of the Third Party Consents (or
in lieu thereof, waivers) and each required Coal Inventory Governmental Approval
shall have been obtained by NSC and delivered to DTE Coal and shall be in full
force and effect.
 
     SECTION 5.3  Opinion of Counsel. DTE Coal shall have received the opinion
or opinions of counsel to NSC, dated the Closing Date, in the form attached
hereto as Exhibit A.
                       
     SECTION 5.4  Bill of Sale.  NSC shall have executed and delivered the Bill
of Sale to DTE Coal.

     SECTION 5.5  Project Contracts.  Each of the Project Contracts shall have
been executed by the parties thereto.


                                  ARTICLE VI

                       CONDITIONS TO OBLIGATIONS OF NSC

     The obligations of NSC hereunder to sell and convey the Coal Inventory are
subject to the fulfillment, at or before the Closing, of each of the following
conditions (all or any of which may be waived in whole or in part by NSC in its
sole discretion):

     SECTION 6.1  Officers' Certificates.  DTE Coal shall have delivered to NSC
a certificate executed by an authorized and responsible officer of DTE Coal,
dated the Closing Date, certifying (i) that attached thereto is a true, correct
and complete copy of the Certificate of Incorporation of DTE Coal as in effect
on the date of such certificate, (ii) that attached thereto is a true, correct
and complete copy of the resolutions adopted by the Board of Directors of DTE
Coal authorizing the execution, delivery and performance of this Agreement, and
all other documents delivered in connection herewith and that such resolutions
have not been modified, rescinded or amended and are in full force and effect,
(iii) that no action has been taken by DTE Coal in contemplation of the
liquidation, dissolution, bankruptcy or insolvency of DTE Coal, and (iv) as to
the incumbency and

                                       8
<PAGE>
 
specimen signature of each representative of DTE Coal executing this Agreement,
and any other document delivered in connection herewith.

     SECTION 6.2  Opinion of Counsel.  NSC shall have received the opinion of
counsel of DTE Coal, dated the Closing Date, in the form and substance attached
hereto as Exhibit B.

     SECTION 6.3  Project Contracts.  Each of the Project Contracts shall have
been executed by the parties thereto.

     SECTION 6.4  Consents and Approvals.  Each of the Third Party Consents (or
in lieu thereof, waivers) and required Coal Inventory Governmental Approval
shall have been obtained by NSC and shall be in full force and effect.


                                 ARTICLE VII 

                  SURVIVAL OF REPRESENTATIONS AND WARRANTIES;
                    NO OTHER REPRESENTATIONS AND WARRANTIES

     SECTION 7.1  Survival of Representations and Warranties.  (a) The
representations and warranties of NSC set forth in Article III hereof and of DTE
Coal set forth in Article IV hereof shall survive for a period of two (2) years
after Closing. Any Claims with respect to a breach of a representation and
warranty made by a Party under this Agreement shall be asserted by giving
written notice to the other Party (describing in reasonable detail the facts and
circumstances supporting such Claim) within such two (2) year period. Any Claims
for breaches of representations and warranties hereunder shall be net of any Tax
Benefits and insurance proceeds available to the claiming Party. Any disputes
regarding such Tax Benefits shall be resolved in the manner set forth in Section
9.1(b) of the Asset Purchase Agreement, which Section 9.1(b) is incorporated by
reference into this Agreement (except that the references therein to the
"Parties" shall be deemed to be a reference to NSC and/or DTE Coal, as
applicable).

     SECTION 7.2  NO OTHER REPRESENTATIONS OR WARRANTIES.  EXCEPT FOR THE
REPRESENTATIONS AND WARRANTIES SPECIFICALLY SET FORTH ABOVE IN ARTICLE III, THE
COAL INVENTORY WILL BE DELIVERED TO DTE COAL "AS IS" AND "WHERE IS," WITHOUT ANY
EXPRESS OR IMPLIED REPRESENTATION OR WARRANTY OF ANY KIND, INCLUDING, WITHOUT
LIMITATION, ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.

                                       9
<PAGE>
 
     SECTION 7.3  Limitation of Liability.  Neither Party shall have any
indemnification or other liability with respect to the breach of any
representation or warranty that does not have a material adverse effect on the
other Party. Neither Party shall be liable for special, consequential or
indirect damages with regard to any breach of a representation or warranty set
forth in this Agreement. Under no circumstances shall either Party be liable to
the other Party for punitive damages.

     SECTION 7.4  Indemnity Procedures.  The indemnity procedures set forth in
Section 9.4 of the Asset Purchase Agreement are, to the extent relevant to a
claim for a breach of a representation and warranty under this Agreement,
incorporated by reference into this Agreement (except that the references
therein to the "Parties" shall be deemed to be a reference to NSC and/or DTE
Coal, as applicable, and the references therein to this "Agreement" shall be
deemed to be a reference to this Agreement).


                                 ARTICLE VIII

                                 MISCELLANEOUS

     SECTION 8.1  Notices.  All notices, requests and other communications
hereunder must be in writing and shall be delivered personally (by hand delivery
or by overnight courier) or by facsimile transmission (with receipt of
transmission confirmation) or mailed (certified mail, postage prepaid) to the
Parties at the following addresses or facsimile numbers and shall be effective
upon receipt (when sent by personal delivery or by certified mail), and upon
receipt of transmission confirmation (when sent by facsimile):

     If to NSC, to:

                   National Steel Corporation
                   Great Lakes Division
                   #1 Quality Drive
                   Ecorse, Michigan  48229

                   Attention:     Thomas Jere

                   Facsimile:     313-297-3651
 
                   and Attention: Bill Wright
 
                   Facsimile:     313-297-3522

                                       10
<PAGE>
 
                   With a copy to NSC's General Counsel at:

                   National Steel Corporation
                   4100 Edison Lakes Parkway
                   Mishawaka, Indiana  46545-3440

                   Facsimile:     219-273-7868
 

     If to DTE Coal, to:

                   DTE Coal Services, Inc.
                   P. O. Box 8614
                   425 South Main Street, Suite 201
                   Ann Arbor, MI  48107

                   Attention:     Kent L. McCargar

                   Facsimile:     313-668-1541

                   DTE Coal Services, Inc.
                   c/o The Detroit Edison Company
                   2000 Second Avenue, Room 1133 WCB
                   Detroit, Michigan  48226-1279

                   Attention: Director-Business Development & Administration

                   Facsimile:     313-235-6992

Either Party from time to time may change its address, facsimile number or other
information for the purpose of notices to such Party by giving notice specifying
such change to the other Party.

     SECTION 8.2  Entire Agreement.  This Agreement constitutes the entire
agreement and understanding between the Parties with respect to the subject
matter herein and the transactions contemplated herein and any and all previous
understandings, proposals, negotiations, agreements, commitments and
representations, whether oral or written, are

                                       11
<PAGE>
 
merged herein and are superseded hereby. This Agreement shall be binding upon
and inure to the benefit of the Parties and their respective successors and
permitted assigns.

     SECTION 8.3  Confidentiality.  Each Party shall hold, and shall use its
best efforts to cause its Affiliates, and in the case of DTE Coal, any Lender to
hold, in strict confidence from any other Person (other than any such Affiliate
or Lender) all documents and information concerning the other Party or any of
its Affiliates furnished to it by the other Party in connection with this
Agreement or the transactions contemplated hereby and, in the case of DTE Coal,
all historical cost and historical production information and all environmental
information furnished to DTE Coal or its consultants, contractors or agents by
NSC, unless (a) required to disclose any such information by judicial or
administrative process (including in connection with obtaining from Governmental
Authorities the necessary approvals of this Agreement and the transactions
contemplated hereby and of the other Project Contracts) or by other requirements
of Law, (b) disclosed in or pursuant to the offering statement provided to
potential purchasers of EES Coke securities issued by EES Coke in connection
with the acquisition of the Coke Facilities, provided that with respect to the
environmental remediation report referred to in such offering statement, such
potential purchasers shall be entitled to receive such report only upon the
execution and delivery to EES Coke (with a copy to NSC) of a confidentiality
agreement in form and substance reasonably satisfactory to NSC, or (c) disclosed
in an action or proceeding brought by either Party in pursuit of its rights or
in the exercise of its remedies hereunder. Notwithstanding the foregoing, this
Section 8.3 shall not apply to such documents or information that were (i)
previously known by the Party receiving such documents or information, (ii) in
the public domain (either prior to or after the furnishing of such documents or
information hereunder) through no fault of such receiving Party, or (iii) later
acquired by such receiving Party from another source if such receiving Party is
not aware that such source is under an obligation to the other Party to keep
such documents and information confidential. Following the Closing, the
foregoing restrictions shall cease to apply to DTE Coal's use of documents and
information furnished by NSC hereunder concerning the Coal Inventory purchased
by DTE Coal at the Closing pursuant to Section 2.4.
  
     SECTION 8.4  Required Disclosure.  Any Party required by Law or in the
course of administrative or judicial proceedings, to disclose information that
is otherwise required to be maintained in confidence pursuant to this Article
VIII, may make disclosure notwithstanding the provisions of this Article;
provided, however, that the Party making the disclosure shall give prior notice
to the other Party of the requirement and the terms thereof and shall cooperate
to the maximum extent practicable to minimize the disclosure of the information.
The Party disclosing such information shall use reasonable efforts, at the other
Party's cost, to obtain proprietary or confidential treatment of such
information

                                      12
<PAGE>
 
by the third party to whom the information is disclosed, and to the extent such
remedies are available, shall use reasonable efforts to seek protective orders
limiting the dissemination and use of the information at the other Party's cost.
Moreover, this Agreement does not alter the rights of either Party to object to
the Law or proceedings requiring the disclosure.

     SECTION 8.5  Waiver.  Any term or condition of this Agreement may be waived
at any time by the Party that is entitled to the benefit thereof, but no such
waiver shall be effective unless set forth in a written instrument duly executed
by both Parties. The failure or delay of either Party to require performance by
the other Party of any provision of this Agreement shall not affect its right to
require performance of such provision unless and until such performance has been
waived by such Party in writing in accordance with the terms hereof. No waiver
by either Party of any term or condition of this Agreement, in any one or more
instances, shall be deemed to be or construed as a waiver of the same or any
other term or condition of this Agreement on any future occasion. All remedies,
either under this Agreement or by Law or otherwise afforded, shall be cumulative
and not alternative.

     SECTION 8.6  Amendment.  No modification or amendment of any provision of
this Agreement shall be valid unless it is in writing and signed by both
Parties.

     SECTION 8.7  No Third Party Beneficiary.  The terms and provisions of this
Agreement are intended solely for the benefit of each Party and their respective
successors or permitted assigns, and it is not the intention of the Parties to
confer third-party beneficiary rights upon any other Person.

     SECTION 8.8  Headings.  The headings contained in this Agreement are solely
for the convenience of the Parties and should not be used or relied upon in any
manner in the construction or interpretation of this Agreement.

     SECTION 8.9  Invalidity.  The invalidity or unenforceability of any
provision of this Agreement shall be determined only by a court of competent
jurisdiction. The Parties hereby agree to use good faith efforts to negotiate an
equitable adjustment to any provision of this Agreement determined to be invalid
or unenforceable with a view toward effecting the purposes of this Agreement,
and the validity or enforceability of the remaining provisions of this Agreement
shall not be affected thereby.

     SECTION 8.10  Counterparts.  The Parties may execute this Agreement in
counterparts, which shall, in the aggregate, when signed by both Parties
constitute one and the same 

                                       13
<PAGE>
 
instrument; and, thereafter, each counterpart shall be deemed an original
instrument as against any Party who has signed it.

     SECTION 8.11  Governing Law.  This Agreement shall be governed by and
construed in accordance with the laws of the State of Michigan.

     SECTION 8.12  Effective Date.  This Agreement shall be effective from and
after the Closing Date. In the event the Closing Date does not occur by June 30,
1997, either Party may terminate this Agreement by delivering written notice to
the other Party prior to the Closing Date.


                 [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       14
<PAGE>
 
     IN WITNESS WHEREOF, NSC and DTE Coal have executed this Agreement by their
duly authorized signatories as of the date first above written.



                                   DTE Coal Services, Inc.



                                   By: /s/ Dawne A. Haight-Everett
                                      ----------------------------
                                      Name: Dawne A. Haight-Everett
                                      Title: Assistant Treasurer



                                   National Steel Corporation



                                   By: /s/ Bernard D. Henely
                                      ----------------------
                                      Name: Bernard D. Henely
                                      Title: Senior Vice President and
                                             General Counsel


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