MCN ENERGY GROUP INC
8-K, 1997-06-25
NATURAL GAS DISTRIBUTION
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<PAGE>   1
                       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 24, 1997

                             MCN ENERGY GROUP INC.
             (Exact name of registrant as specified in its charter)

       MICHIGAN                   1-10070                   38-2820658
State of Incorporation       (Commission File            (I.R.S. Employer
                                   Number)              Identification No.)

 500 GRISWOLD STREET, DETROIT, MICHIGAN                         48226
(Address of principal executive offices)                      (Zip Code)

              Registrant's telephone number, including area code:
                                 (313) 256-5500
<PAGE>   2
ITEM 5. OTHER EVENTS

        MCN Energy Group Inc. ("MCN" or the "Registrant") is filing herewith the
following in connection with the offering of its Common Stock (par value $.01
per share) pursuant to the registration statement of the Registrant, among 
others, on Form S-3 (No. 333-21175) filed with the Securities and Exchange 
Commission under the Securities Act of 1933.

                              INDEX TO EXHIBITS

EXHIBIT 
NUMBER                           EXHIBIT

5.1          U.S. Purchase Agreement dated June 24, 1997 with respect to the 
             Common Stock.

5.2          International Purchase Agreement dated June 24, 1997 with respect
             to the Common Stock.



<PAGE>   3
                                  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.

                                      MCN ENERGY GROUP INC.
 
                                  By  /s/ Sebastian Coppola
                                      ---------------------------
                                      Sebastian Coppola
                                      Senior Vice President and Treasurer

Date: June 25, 1997

<PAGE>   4
                                EXHIBIT INDEX


EXHIBIT NO.                           DESCRIPTION
- -----------                           -----------

5.1          U.S. Purchase Agreement dated June 24, 1997 with respect to the 
             Common Stock.

5.2          International Purchase Agreement dated June 24, 1997 with respect
             to the Common Stock.




<PAGE>   1
                                                                     EXHIBIT 5.1




                             MCN ENERGY GROUP INC.

                            (A MICHIGAN CORPORATION)

                                7,000,000 SHARES

                                  COMMON STOCK
                           (PAR VALUE $.01 PER SHARE)


                            U.S. PURCHASE AGREEMENT


                                                                   June 24, 1997


MERRILL LYNCH & CO.
MERRILL LYNCH, PIERCE, FENNER & SMITH
            INCORPORATED
DONALDSON, LUFKIN & JENRETTE
      SECURITIES CORPORATION
A.G. EDWARDS & SONS, INC.
PAINEWEBBER INCORPORATED
SALOMON BROTHERS INC
SMITH BARNEY INC.
     As the U.S. Representatives of the several U.S. Underwriters
c/o     Merrill Lynch & Co.
        Merrill Lynch, Pierce, Fenner & Smith
                   Incorporated
North Tower
World Financial Center
New York, New York  10281-1209

Ladies and Gentlemen:

     MCN Energy Group Inc., a Michigan corporation (the "Company") confirms its
agreement with Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith
Incorporated ("Merrill Lynch") and each of the other U.S. Underwriters named in
Schedule A hereto (collectively, the "U.S. Underwriters", which term shall also
include any underwriter substituted as hereinafter provided in Section 10
hereof), for whom Merrill Lynch, Donaldson, Lufkin

<PAGE>   2

& Jenrette Securities Corporation, A.G. Edwards & Sons, Inc., PaineWebber
Incorporated, Salomon Brothers Inc and Smith Barney Inc. are acting as
representatives (in such capacity, collectively, the "U.S. Representatives"),
with respect to the issue and sale by the Company and the purchase by the U.S.
Underwriters, acting severally and not jointly, of the respective numbers of
shares of common stock, par value $.01 per share, of the Company (the "Common
Stock") set forth in said Schedule A, and with respect to the grant by the
Company to the U.S. Underwriters, acting severally and not jointly, of the
option described in Section 2(b) hereof to purchase all or any part of
1,050,000 additional shares of Common Stock to cover over-allotments, if any.
The aforesaid 7,000,000 shares of Common Stock (the "Initial U.S. Securities")
to be purchased by the U.S. Underwriters and all or any part of the 1,050,000
shares of Common Stock subject to the option described in Section 2(b) hereof
(the "U.S. Option Securities") are hereinafter called, collectively, the "U.S.
Securities".

     Prior to the purchase and public offering of the U.S. Securities by the
several U.S. Underwriters, the Company and the U.S. Representatives, acting on
behalf of the several U.S. Underwriters, shall enter into an agreement
substantially in the form of Exhibit A hereto (the "U.S. Pricing Agreement").
The U.S. Pricing Agreement may take the form of an exchange of any standard
form of written communication between the Company and the U.S. Representatives
and shall specify such applicable information as is indicated in Exhibit A
hereto.  The offering of the U.S. Securities will be governed by this
Agreement, as supplemented by the U.S. Pricing Agreement.  From and after the
date of the execution and delivery of the U.S. Pricing Agreement, this
Agreement shall be deemed to incorporate the U.S. Pricing Agreement.

     It is understood that the Company is concurrently entering into an
agreement dated the date hereof (the "International Purchase Agreement")
providing for the offering by the Company of an aggregate of 1,500,000 shares
of Common Stock (the "Initial International Securities") through arrangements
with certain underwriters outside the United States and Canada (the
"International Managers") for which Merrill Lynch International, Donaldson,
Lufkin & Jenrette Securities Corporation, A.G. Edwards & Sons, Inc.,
PaineWebber International (U.K.) Ltd., Salomon


                                     -2-
<PAGE>   3


Brothers International Limited and Smith Barney Inc. are acting as lead managers
(the "Lead Managers") and the grant by the Company to the International
Managers, acting severally and not jointly, of an option purchase all or any
part of the 225,000 additional shares of Common Stock solely to cover
overallotments, if any (the "International Option Securities" and, together
with the U.S. Option Securities, the "Option Securities").  The Initial
International Securities and the International Option Securities are
hereinafter called the "International Securities".  It is understood that the
Company is not obligated to sell, and the U.S. Underwriters are not obligated
to purchase, any Initial U.S. Securities unless all of the Initial
International Securities are contemporaneously purchased by the International
Managers.  Prior to the purchase and public offering of the International
Securities by the several International Managers, the Company and the Lead
Managers, acting on behalf of the International Managers, shall enter into an
pricing agreement (the "International Pricing Agreement") specifying the
applicable information as set forth in the International Purchase Agreement.
From and after the date of the execution and delivery of the International
Pricing Agreement, the offering of the International Securities will be
governed by the International Purchase Agreement, as supplemented by the
International Pricing Agreement.

     The U.S. Underwriters and the International Managers are hereinafter
collectively called the "Underwriters", the Initial U.S. Securities and the
Initial International Securities are hereinafter collectively called the
"Initial Securities", and the U.S. Securities and the International Securities
are hereinafter collectively called the "Securities".

     The Underwriters will concurrently enter into an Intersyndicate Agreement
of even date herewith (the "Intersyndicate Agreement") providing for the
coordination of certain transactions among the Underwriters under the direction
of Merrill Lynch.

     The Company understands that the U.S. Underwriters propose to make a
public offering of the U.S. Securities as soon as the U.S. Representatives deem
advisable after the U.S. Pricing Agreement has been executed and delivered.


                                     -3-
<PAGE>   4

     The Company, and MCN Financing II, MCN Financing III and MCN Financing IV
(collectively, the "MCN Trusts") have filed with the Securities and Exchange
Commission (the "Commission") a registration statement on Form S-3 (No.
333-21175) and pre-effective amendment no. 1 thereto covering the registration
of securities of the Company and the MCN Trusts, including the Securities,
under the Securities Act of 1933, as amended (the "1933 Act"), including the
related preliminary prospectus or prospectuses, and the offering thereof from
time to time in accordance with Rule 415 of the rules and regulations of the
Commission under the 1933 Act (the "1933 Act Regulations") and the Company has
filed such post-effective amendments thereto as may be required prior to the
execution of the Pricing Agreement.  Such registration statement, as so
amended, has been declared effective by the Commission.  Such registration
statement, as so amended, including the exhibits and schedules thereto, if any,
and the information, if any, deemed to be a part thereof pursuant to Rule
430A(b) of the 1933 Act Regulations (the "Rule 430A Information") or Rule
434(d) of the 1933 Act Regulations (the "Rule 434 Information"), is referred to
herein as the "Registration Statement"; provided,however, that all references
to the "Registration Statement" shall be deemed to include all documents
incorporated therein by reference pursuant to the Securities Exchange Act of
1934, as amended (the "1934 Act"), prior to the execution of the applicable
Pricing Agreement; provided, further, that if the Company files a registration
statement with the Commission pursuant to Section 462(b) of the 1933 Act
Regulations (the "Rule 462(b) Registration Statement"), then after such filing,
all references to "Registration Statement" shall be deemed to include the Rule
462(b) Registration Statement. Two forms of prospectus supplement are to be
used in connection with the offering and sale of the Securities: one relating
to the U.S. Securities (the "Form of U.S. Prospectus Supplement") and one
relating to the International Securities (the "Form of International Prospectus
Supplement").  The form of International Prospectus Supplement is identical to
the Form of U.S. Prospectus Supplement, except for the front cover, inside
front cover and back cover pages and the information under the caption
"Underwriting."  The final Form of U.S. Prospectus Supplement and the final
form of International Prospectus Supplement, including the documents
incorporated by reference therein pursuant to Item 12 of Form S-3 under the
1933 Act, and including the prospectus constituting a part of the


                                     -4-

<PAGE>   5


Registration Statement, in the forms first furnished to the Underwriters for 
use in connection with the offering of the Securities are herein called the 
"U.S. Prospectus" and the "International Prospectus," respectively, and 
collectively, the "Prospectuses."  If the Company elects to rely upon Rule 434
of the 1933 Act Regulations, the terms "U.S. Prospectus" and "International 
Prospectus" shall refer to the preliminary U.S. Prospectus dated June 3, 1997 
and preliminary International Prospectus dated June 3, 1997, respectively, each
together with the applicable term sheet (a "Term Sheet") and all references in
this Agreement to the date of such Prospectuses shall mean the date of the
applicable Term Sheet.  A "preliminary prospectus" shall be deemed to refer to
any prospectus used before the registration statement became effective and any
prospectus that omitted, as applicable, the Rule 430A Information, the Rule 434
Information or other information to be included upon pricing in a form of
prospectus filed with the Commission pursuant to Rule 424(b) of the 1933 Act
Regulations, that was used after such effectiveness and prior to the execution
and delivery of the U.S. Pricing Agreement.  For purposes of this Agreement,
all references to the Registration Statement, any preliminary prospectus, the
Prospectus, the U.S. Prospectus Supplement, the International Prospectus
Supplement or any Term Sheet or any amendment or supplement to any of the
foregoing shall be deemed to include the electronically transmitted copy
thereof filed with the Commission pursuant to its Electronic Data Gathering,
Analysis and Retrieval system ("EDGAR").

     All references in this Agreement to financial statements and schedules and
other information which is "contained," "included" or "stated" in the
Registration Statement, any preliminary prospectus (including the Form of U.S.
Prospectus Supplement and Form of International Prospectus Supplement) or the
Prospectuses (or other references of like import) shall be deemed to mean and
include all such financial statements and schedules and other information which
is incorporated by reference in the Registration Statement, any preliminary
prospectus (including the Form of U.S. Prospectus Supplement and Form of
International Prospectus Supplement) or the Prospectuses, as the case may be;
and all references in this Agreement to amendments or supplements to the
Registration Statement, any preliminary prospectus or the Prospectuses shall be
deemed to mean and include the filing of any document under the 1934 Act which
is incorporated by

                                     -5-

<PAGE>   6


reference in the Registration Statement, such preliminary prospectus or the
Prospectuses, as the case may be.

     SECTION 1.  Representations and Warranties.

     (a) The Company represents and warrants to each U.S. Underwriter as of the
date hereof, as of the date of the U.S. Pricing Agreement, as of the Closing
Time referred to in Section 2(c) hereof and, if applicable, as of each Date of
Delivery referred to in Section 2(b) hereof (in each case, a "Representation
Date"), as follows:

        (i) No stop order suspending the effectiveness of the Registration 
Statement or any Rule 464(b) Registration Statement has been issued under the 
1933 Act and no proceeding for that purpose has been instituted or are pending
or, to the knowledge of the Company, are contemplated by the Commission.

        (ii) The Company meets the requirements for the use of Form S-3 under
the 1933 Act.  Each of the Registration Statement and any Rule 462(b)
Registration Statement has become effective under the 1933 Act.  At the
respective times the Registration Statement, any Rule 462(b) Registration
Statement and any post-effective amendments thereto (including the filing of
the Company's most recent Annual Report on Form 10-K with the Commission)
became effective and at each Representation Date, the Registration Statement,
any Rule 462 Registration Statement and any amendments or supplements thereto
complied and will comply in all material respects with the requirements of the
1933 Act and the 1933 Act Regulations and did not and will not contain an
untrue statement of a material fact or omit to state a material fact required
to be stated therein or necessary to make the statements therein not
misleading.  Neither the Prospectuses nor any amendments or supplements
thereto, at the time that the Prospectuses or any such amendment or supplement
was issued and at the Closing Time (and, if any U.S. Option Securities are
purchased, at the Date of Delivery), included or will include an untrue
statement of a material fact or omitted or will omit to state a material fact
necessary in order to make the statements therein, in the light of the
circumstances under which they were made, not misleading.  If the Company
elects to rely upon Rule 434 of the 1933 Act Regulations, the Company will
comply with the requirements of Rule 434. Notwithstanding the foregoing, the


                                     -6-
<PAGE>   7


representations warranties in this subsection shall not apply to statements in
or omissions from the Registration Statement or the U.S. Prospectus made in
reliance upon and in conformity with information furnished to the Company in
writing by any U.S. Underwriter through Merrill Lynch expressly for use in the
Registration Statement or the U.S. Prospectus.

        Each preliminary prospectus and the prospectuses filed as part of the
Registration Statement as originally filed or as part of any amendment thereto,
or filed pursuant to Rule 424 under the 1933 Act, complied when so filed in all
material respects with the 1933 Act Regulations and each preliminary prospectus
and the Prospectuses delivered to the Underwriters for use in connection with
the offering of the Securities will, at the time of such delivery, be identical
to the electronically transmitted copies thereof filed with the Commission
pursuant to EDGAR, except to the extent permitted by Regulation S-T.

        (iii) The documents incorporated or deemed to be incorporated by 
reference in the Registration Statement and the Prospectuses, at the time they
were or hereafter are filed with the Commission, complied and will comply in
all material respects with the requirements of the 1934 Act, and the rules and
regulations of Commission thereunder (the "1934 Act Regulations"), and, when
read together with the other information in the Prospectuses, at the time the
Registration Statement became effective, at the time the Prospectuses were
issued and at the Closing Time (and, if any U.S. Option Securities are
purchased, at the Date of Delivery), did not and will not contain an untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein, in the light of the
circumstances under which they were or are made, not misleading.

        (iv) The accountants who certified the financial statements and
supporting schedules included or incorporated by reference in the Registration
Statement and the Prospectuses are independent public accountants as required
by the 1933 Act and the 1933 Act Regulations.

        (v) The financial statements of the Company included or incorporated by
reference in the Registration Statement and the Prospectuses, together with the
related schedules and notes,


                                     -7-
<PAGE>   8


present fairly the financial position of the Company and its consolidated
subsidiaries as at the dates indicated and the statements of operations,
stockholders' equity and cash flows of the Company and its consolidated
subsidiaries for the periods specified.  Such financial statements have been
prepared in conformity with generally accepted accounting principles ("GAAP")
applied on a consistent basis throughout the periods involved.  The supporting
schedules, if any, included or incorporated by reference in the Registration
Statement and the Prospectuses present fairly in accordance with GAAP the
information required to be stated therein.  The ratio of earnings to fixed
charges included in the Prospectuses has been calculated in compliance with
Item 503(d) of Regulation S-K of the Commission.  The selected financial
information and the summary financial data included in the Prospectuses present
fairly the information shown therein and have been compiled on a basis
consistent with that of the audited financial statements included in the
Registration Statement.

        (vi) Since the respective dates as of which information is given in the
Registration Statement and the Prospectuses, and except as otherwise stated
therein, (A) there has been no material adverse change and no development which
could reasonably be expected to result in a material adverse change in the
condition, financial or otherwise, or in the earnings, business affairs or
business prospects of the Company and its subsidiaries, considered as one
enterprise (a "Material Adverse Effect"), whether or not arising in the
ordinary course of business, (B) there have been no transactions entered into
by the Company or any of its subsidiaries, other than those arising in the
ordinary course of business, which are material with respect to the Company and
its subsidiaries, considered as one enterprise, (C) except for regular
dividends on the Common Stock in amounts per share that are consistent with
past practice or the applicable charter document or supplement thereto,
respectively, there has been no dividend or distribution of any kind declared,
paid or made by the Company on any class of its capital stock.

        (vii) The Company has been duly incorporated and is validly existing as
a corporation in good standing under the laws of the State of Michigan, with
corporate power and authority to own, lease and operate its properties and to
conduct its business


                                     -8-
<PAGE>   9


as presently conducted and as described in the Prospectuses and to enter into
and perform its obligations under, or as contemplated under, this Agreement,
the U.S. Pricing Agreement, the International Purchase Agreement and the
International Pricing Agreement.  The Company is duly qualified as a foreign
corporation to transact business and is in good standing in each jurisdiction
in which such qualification is required, whether by reason of the ownership or
leasing of property or the conduct of business, except where the failure to so
qualify or be in good standing would not have a Material Adverse Effect.

        (viii) Each subsidiary of the Company has been duly incorporated and is 
validly existing as a corporation in good standing under the laws of the 
jurisdiction of its incorporation, has the corporate power and authority to 
own, lease and operate its properties and to conduct its business as presently
conducted and as described in the Prospectuses, and is duly qualified as a 
foreign corporation to transact business and is in good standing in each 
jurisdiction in which such qualification is required, whether by reason of the
ownership or leasing of property or the conduct of business, except where the 
failure to so qualify or be in good standing would not have a Material Adverse
Effect. Except as otherwise stated in the Registration Statement and the 
Prospectuses, all of the issued and outstanding shares of capital stock of each 
subsidiary of the Company have been duly authorized and validly issued, is 
fully paid and non-assessable and all such shares are owned by the Company, 
directly or through its subsidiaries, free and clear of any security interest,
mortgage, pledge, lien, encumbrance, claim or equity.  None of the outstanding
shares of capital stock of the subsidiaries was issued in violation of 
preemptive or other similar rights arising by operation of law, under the 
charter or by-laws of any subsidiary or under any agreement to which the 
Company or any subsidiary is a party, or otherwise.

        (ix) The Company has authorized, issued and outstanding capital as set 
forth in the Prospectuses; since the date indicated in the Prospectuses there 
has been no change in the consolidated capitalization of the Company and its
subsidiaries (other than changes in outstanding Common Stock resulting from
employee benefit plan or dividend reinvestment and stock purchase plan
transactions).  The shares of issued and outstanding capital stock of the
Company have been duly



                                     -9-
<PAGE>   10


authorized and validly issued and are fully paid and non-assessable; none of the
outstanding shares of capital stock of the Company was issued in violation of
the preemptive or other similar rights arising by operation of law, under the
charter or by-laws of the Company, under any agreement to which the Company or
any of its subsidiaries is a party or otherwise.

        (x) This Agreement, the U.S. Pricing Agreement, the International
Purchase Agreement and the International Pricing Agreement have been duly
authorized, executed and delivered by the Company.

        (xi) The Securities and the preferred share purchase rights (the
"Rights")  to be issued with the Securities have been duly authorized for
issuance and sale to the U.S. Underwriters pursuant to this Agreement and the
International Managers pursuant to the International Purchase Agreement,
respectively, and, when issued and delivered by the Company against payment of
the consideration as provided in the U.S. Pricing Agreement and the
International Pricing Agreement, respectively, will be validly issued, fully
paid and non-assessable; the Common Stock and the Rights conform to all
statements relating thereto contained in the Prospectuses and such description
conforms to the rights set forth in the instruments defining the same; no
holder of the Securities will be subject to personal liability by reason of
being such a holder; and the issuance of the Securities is not subject to
preemptive or other similar rights arising by operation of law, under the
charter or by-laws of the Company, under any agreement to which the Company or
any of its subsidiaries is a party or otherwise.

        (xii) Neither the Company nor any of its subsidiaries is in violation
of  its charter or by-laws or in default in the performance or observance of
any material obligation, agreement, covenant or condition contained in any
contract, indenture, mortgage, deed of trust, note, lease, loan or credit
agreement or any other agreement or instrument to which the Company or any of
its subsidiaries is a party or by which any of them may be bound, or to which
any of the property or assets of the Company or any of its subsidiaries is
subject, or in violation of any applicable law, rule or regulation or any
judgment, order, writ or decree of any government, governmental instrumentality
or court, domestic or foreign, having jurisdiction over the Company or any of
its


                                    -10-
<PAGE>   11


subsidiaries or any of their respective properties or assets, which violation or
default would, singly or in the aggregate, have a Material Adverse Effect.

        (xiii) The execution, delivery and performance of this Agreement, the
U.S. Pricing Agreement, the International Purchase Agreement and the
International Pricing Agreement and the consummation of the transactions
contemplated herein and therein and in the Registration Statement (including
the issuance and sale of the Securities and the use of the proceeds from the
sale of the Securities as described in the Prospectuses under the caption "Use
of Proceeds") and compliance by the Company with its obligations hereunder and
thereunder have been duly authorized by all necessary corporate action and do
not and will not, whether with or without the giving of notice or passage of
time or both, conflict with or constitute a breach of, or default under, or
result in the creation or imposition of any lien, charge or encumbrance upon
any property or assets of the Company or any of its subsidiaries pursuant to
any contract, indenture, mortgage, deed of trust, loan or credit agreement,
note, lease or other agreement or instrument to which the Company or any of its
subsidiaries is a party or by which any of them may be bound, or to which any
property or assets of the Company or any subsidiary thereof is subject, nor
will such action result in any violation of the provisions of the charter of
by-laws of the Company or any of its subsidiaries or any applicable law,
statute, rule or regulation, judgment, order, writ or decree of any government,
governmental instrumentality or court, domestic or foreign, having jurisdiction
over the Company or any of its subsidiaries or any of their respective
property, assets or operations.

        (xiv) No labor dispute with the employees of the Company or any of its
subsidiaries exists or, to the knowledge of the Company, is imminent, and the
Company is not aware of any existing or imminent labor disturbance by the
employees of any of its or any of its subsidiary's principal suppliers,
manufacturers, customers or contractors which, in either case, may reasonably
be expected to result in a Material Adverse Effect.

        (xv) There is no action, suit, proceeding, inquiry or investigation
before  or by any court or governmental agency or body, domestic or foreign,
now  pending, or, to the knowledge of


                                    -11-
<PAGE>   12


the Company, threatened against or affecting the Company or any of its
subsidiaries which is required to be disclosed in the Registration Statement
and the Prospectuses (other than as stated therein), or which might reasonably
be expected to result in a Material Adverse Effect, or which might be
reasonably expected to materially and adversely affect the assets, properties
or operations thereof or the consummation of the transactions contemplated by
this Agreement, the U.S. Pricing Agreement, the International Purchase
Agreement and the International Pricing Agreement or the performance by the
Company of its obligations hereunder and thereunder; the aggregate of all
pending legal or governmental proceedings to which the Company or any
subsidiary thereof is a party or of which any of their respective properties or
operations is the subject which are not described in the Registration Statement
and the Prospectuses, including ordinary routine litigation incidental to the
business, could not reasonably be expected to result in a Material Adverse
Effect.

        (xvi) There are no contracts or documents which are required to be 
described in the Registration Statement, the Prospectuses or the documents 
incorporated by reference therein or to be filed as exhibits thereto which have 
not been so described and/or filed as required.

        (xvii) No filing with, or authorization, approval, consent, license,
order, registration, qualification or decree of, any court or governmental
authority or agency is necessary or required for the performance by the Company
of its obligations hereunder, in connection with the offering, issuance or sale
of the Securities under this Agreement, the U.S. Pricing Agreement, the
International Purchase Agreement and the International Pricing Agreement or the
consummation of the transactions contemplated by this Agreement, the U.S.
Pricing Agreement, the International Purchase Agreement and the International
Pricing Agreement, except such as have been already obtained or as may be
required under the 1933 Act or the 1933 Act Regulations or foreign or state
securities or blue sky laws.

        (xviii) The Company and its subsidiaries have good and marketable title
to  all real property owned by them and good title to all other properties
owned by them, in each case, free and clear of all mortgages, pledges, liens,
security interests, claims, restrictions or encumbrances of any kind except
such as


                                    -12-
<PAGE>   13

(a) are described in the Registration Statement and the Prospectuses or (b) do
not, singly or in the aggregate, materially affect the value of such property
and do not interfere with the use made and proposed to be made of such property
by the Company or any of its subsidiaries; and all of the leases and subleases
material to the business of the Company and its subsidiaries, considered as one
enterprise, and under which the Company or any of its subsidiaries holds
properties are in full force and effect, and neither the Company nor any of its
subsidiaries has any notice of any material claim of any sort that has been
asserted by anyone adverse to the rights of the Company or any of its
subsidiaries under any of the leases or subleases mentioned above, or affecting
or questioning the rights of the Company or such subsidiary to the continued
possession of the leased or subleased premises under any such lease or
sublease; the pipeline, distribution main and underground gas storage easements
enjoyed by the Company or its subsidiaries are valid, subsisting and
enforceable easements with such exceptions as are not material and do not
materially interfere with the conduct of the business of the Company and its
subsidiaries.

        (xix) The Company and its subsidiaries possess all licenses,
franchises, permits, certificates, approvals, consents, orders and other
authorizations (collectively, the "Governmental Licenses") issued by the
appropriate federal, state, local or foreign regulatory agencies or bodies
necessary for the ownership or lease of the material properties owned or leased
by each of them and to conduct the business now operated by each of them; the
Company and its subsidiaries are in compliance with the terms and conditions of
all such Governmental Licenses, except where the failure to so comply would
not, singly or in the aggregate, have a Material Adverse Effect; all of the
Governmental Licenses are valid and in full force and effect, except when the
invalidity of such Governmental Licenses or the failure of such Governmental
Licenses to be in full force and effect would not have a Material Adverse
Effect; and neither the Company nor any of its subsidiaries has received any
notice of proceedings relating to the revocation or modification of any such
Governmental Licenses which, singly or in the aggregate, if the subject of an
unfavorable decision, ruling or finding, would result in a Material Adverse
Effect.



                                    -13-
<PAGE>   14

        (xx) The Company is not, and upon the issuance and sale of the
Securities as herein contemplated and the application of the net proceeds
therefrom as described in the Prospectuses will not be, an "investment company"
or an entity under the "control" of an "investment company" as such terms are
defined under the Investment Company Act of 1940, as amended (the "1940 Act").

        (xxi) The Company is presently exempt from the provisions of the Public 
Utility Holding Company Act of 1935 (except Section 9 thereof) which would 
otherwise require it to register thereunder.

        (xxii) The Company has complied with, and is and will be in compliance 
with, the provisions of that certain Florida act relating to disclosure of 
doing business with Cuba, codified as Section 517.075 of the Florida statutes,
and the rules and regulations thereunder (collectively, the "Cuba Act") or is 
exempt therefrom.

        (xxiii) None of the Company, its subsidiaries or any of their
respective directors, officers or controlling persons, has taken, directly or
indirectly, any action resulting in a violation of Regulation M under the 1934
Act, or designed to cause or result in, or that has constituted or that
reasonably might be expected to constitute, the stabilization or manipulation
of the price of any security of the Company to facilitate the sale or resale of
the Securities or the Common Stock.

        (xxiv) No "forward looking statement" (as defined in Rule 175 under the 
1933 Act) contained in the Registration Statement, any preliminary prospectus 
or the Prospectuses was made or reaffirmed without a reasonable basis or was 
disclosed other than in good faith.

        (b) Any certificate signed by any officer of the Company or any
subsidiary  and delivered to the U.S. Underwriters or to counsel for the U.S.
Underwriters in connection with the offering of the Securities shall be deemed
a representation and warranty by the Company to each U.S. Underwriter as to
the matters covered thereby.


                                    -14-
<PAGE>   15

     SECTION 2.  Sale and Delivery to the U.S. Underwriters; Closing.

     (a) On the basis of the representations and warranties herein contained and
subject to the terms and conditions herein set forth, the Company agrees to
sell to each U.S. Underwriter, and each U.S. Underwriter, severally and not
jointly, agrees to purchase from the Company, at the price per security set
forth in the U.S. Pricing Agreement, the number of Initial U.S. Securities set
forth in Schedule A hereto opposite the name of such U.S.  Underwriter, plus
any additional number of Initial U.S. Securities which such Underwriter may
become obligated to purchase pursuant to the provisions of Section 10 hereof.

     (b) In addition, on the basis of the representations and warranties herein
contained and subject to the terms and conditions herein set forth, the Company
hereby grants an option to the U.S. Underwriters, severally and not jointly, to
purchase at their election up to an additional 1,050,000 shares of Common Stock
at the price per share set forth in the U.S. Pricing Agreement, less an amount
per share equal to any dividends or distributions declared by the Company and
payable on the Initial U.S. Securities but not payable on the U.S. Option
Securities.  The option hereby granted will expire automatically at the close
of business on the 30th calendar day after the date of the U.S. Pricing
Agreement and may be exercised in whole or in part from time to time only for
the purpose of covering over-allotments which may be made in connection with
the offering and distribution of the Initial U.S. Securities upon notice by the
U.S. Representatives to the Company setting forth the number of U.S. Option
Securities as to which the several U.S. Underwriters are then exercising the
option and the time and date of payment and delivery for such U.S. Option
Securities.  Any such time and date of delivery (a "Date of Delivery") shall be
determined by the U.S. Representatives but shall not be later than seven full
business days after the exercise of said option, nor in any event prior to the
Closing Time, unless otherwise agreed upon by Merrill Lynch and the Company.
If the option is exercised as to all or any portion of the U.S. Option
Securities, each of the U.S. Underwriters, acting severally and not jointly,
will purchase that proportion of the total number of U.S. Option Securities
then being purchased which the number of Initial U.S.  Securities set forth in
Schedule A opposite the name of such U.S.


                                    -15-
<PAGE>   16


Underwriter bears to the total number of Initial U.S. Securities, subject in 
each case to such adjustments as the U.S. Representatives in their discretion 
shall make to eliminate any sales or purchases of fractional shares.

     (c) Payment of the purchase price for, and delivery of certificates for,
the Initial Securities shall be made at the offices of LeBoeuf, Lamb, Greene &
MacRae, L.L.P, 125 West 55th Street, New York, New York  10019, or at such
other place as shall be agreed upon by the U.S. Representatives and the
Company, at 9:00 a.m. (Eastern time) on the third (fourth, if pricing of the
Securities occurs after 4:30 p.m. (Eastern time) on any given day) business day
after the date of execution of the U.S. Pricing Agreement (unless postponed in
accordance with the provisions of Section 10), or such other time not later
than ten business days after such date as shall be agreed upon by the U.S.
Representatives and the Company (such time and date of payment and delivery
being referred to herein as the "Closing Time").

        In addition, in the event that any or all of the U.S. Option Securities
are purchased by the U.S. Underwriters, payment of the purchase price for, and
delivery of certificates for, such U.S. Option Securities shall be made at the
above-mentioned offices, or at such other place as shall be agreed upon by the
U.S. Representatives and the Company, on each Date of Delivery as specified in
the notice from the U.S. Representatives to the Company.

        Payment shall be made to the Company by wire transfer of immediately
available funds to a bank account designated by the Company, against delivery
to the U.S. Representatives for the respective accounts of the U.S.
Underwriters of certificates for the U.S. Securities to be purchased by them.
It is understood that each U.S. Underwriter has authorized the U.S.
Representatives, for its account, to accept delivery of, receipt for, and make
payment of the purchase price for, the Initial U.S. Securities and the U.S.
Option Securities, if any, which it has agreed to purchase.  Merrill Lynch,
individually and not as representative of the U.S. Underwriters, may (but shall
not be obligated to) make payment of the purchase price for the Initial U.S.
Securities or the U.S. Option Securities, if any, to be purchased by any U.S.
Underwriter whose funds have not been received by the Closing Time of the
relevant of Date of Delivery,

                                    -16-

<PAGE>   17


as the case may be, but such payment shall not relieve such U.S. Underwriter
from its obligations hereunder.

     (d) Certificates for the Initial U.S. Securities and the U.S. Option
Securities, if any, shall be in such denominations and registered in such names
as the U.S. Representatives may request in writing at least one full business
day before the Closing Time or the relevant Date of Delivery, as the case may
be.  The certificates for the Initial U.S. Securities and the U.S. Option
Securities, if any, will be made available for examination and packaging by the
U.S. Representatives no later than 10:00 a.m. (Eastern time) on the business
day prior to the Closing Time or the relevant Date of Delivery, as the case may
be.

     (e) If settlement for the U.S. Option Securities occurs after the Closing
Time, the Company will deliver to the U.S. Underwriters on the relevant Date of
Delivery, and the obligations of the U.S. Underwriters to purchase the U.S.
Option Securities shall be conditioned upon the receipt of, supplemental
opinions, certificates and letters confirming as of such date the opinions,
certificates and letters delivered at the Closing Time pursuant to Section 5(i)
hereof.

     SECTION 3.  Covenants of the Company.  The Company covenants with each U.S.
Underwriter as follows:

     (a) Promptly following the execution of this Agreement, the Company will 
cause the Prospectuses, including as a part thereof a prospectus supplement 
relating to the Securities, to be filed with the Commission pursuant to Rule 
424(b) of the 1933 Act Regulations and will take steps as it deems necessary 
to ascertain promptly whether the form of prospectus transmitted for filing 
under Rule 424(b) was received for filing by the Commission and, in the event 
that it was not, it will promptly file such prospectus.

     (b) The Company, subject to Section 3(b), will comply with the 
requirements of Rule 430A or Rule 434 of the 1933 Act Regulations, as 
applicable, and will notify the U.S. Representatives immediately, and confirm 
the notice in writing, (i) of the effectiveness of any post-effective 
amendment to the Registration Statement or the filing of any supplement or


                                    -17-
<PAGE>   18

amendment to the Prospectuses, (ii) of the receipt of any comments from the
Commission, (iii) of any request by the Commission for any amendment to the
Registration Statement or any amendment or supplement to the Prospectuses or
for additional information and (iv) of the issuance by the Commission of any
stop order suspending the effectiveness of the Registration Statement or of any
order preventing or suspending the use of any preliminary prospectus or
Prospectuses, or of the suspension of the qualification of the Securities for
offering or sale in any jurisdiction, or of the initiation or threatening of
any proceedings for any of such purposes.  The Company will make every
reasonable effort to prevent the issuance of any stop order and, if any stop
order is issued, to obtain the lifting thereof at the earliest possible moment.

     (c) The Company will give the U.S. Representatives notice of its intention 
to file or prepare any amendment to the Registration Statement (including any
post-effective amendment and any filing under Rule 462(b) of the 1933 Act
Regulations), any Term Sheet or any amendment, supplement or revision to either
the prospectus included in the Registration Statement at the time it became
effective or to the Prospectuses, whether pursuant to the 1933 Act, the 1934
Act or otherwise; will furnish the U.S.  Representatives with copies of any
such Rule 462(b) Registration Statement, Term Sheet, amendment, supplement or
revision a reasonable amount of time prior to such proposed filing or use, as
the case may be; and will not file any such Rule 462(b) Registration Statement,
Term Sheet, amendment, supplement or revision to which the U.S. Representatives
or counsel for the U.S. Underwriters shall object.

     (d) The Company has furnished or will deliver to the U.S. Representatives
and counsel for the U.S. Underwriters, without charge, signed copies of the
Registration Statement as originally filed and of each amendment thereto
(including exhibits filed therewith or incorporated by reference therein and
documents incorporated or deemed to be incorporated by reference therein) and
signed copies of all consents and certificates of experts, and will also
deliver to the U.S. Representatives, without charge, a conformed copy of the
Registration Statement as originally filed and of each amendment thereto
(without exhibits) for each of the U.S. Underwriters.  The copies of the
Registration Statement and each amendment thereto furnished to

                                    -18-
<PAGE>   19


the U.S. Underwriters will be identical to the electronically transmitted
copies thereof filed with the Commission pursuant to EDGAR, except to the
extent permitted by Regulation S-T.

     (e) The Company will deliver to each U.S. Underwriter, without charge,
as many copies of each preliminary prospectus as such U.S. Underwriter may 
reasonably request, and the Company hereby consents to the use of such copies
for purposes permitted by the 1933 Act.  The Company will furnish to each U.S.
Underwriter, without charge, during the period when the U.S. Prospectus is
required to be delivered under the 1933 Act or the 1934 Act, such number of
copies of the U.S. Prospectus (as amended or supplemented) as such U.S.
Underwriter may reasonably request.  The U.S. Prospectus and any amendments or
supplements thereto furnished to the U.S. Underwriters will be identical to the
electronically transmitted copies thereof filed with the Commission pursuant to
EDGAR, except to the extent permitted by Regulation S-T.

     (f) The Company will comply with the 1933 Act and the 1933 Act
Regulations and the 1934 Act and the 1934 Act Regulations so as to permit the
completion of the distribution of the Securities as contemplated in this
Agreement, the International Purchase Agreement and in the Prospectuses.  If at
any time when a prospectus is required by the 1933 Act or the 1934 Act to be
delivered in connection with sales of the Securities, any event shall occur or
condition shall exist as a result of which it is necessary, in the opinion of
counsel for the U.S. Underwriters or for the Company, to amend the Registration
Statement or amend or supplement any Prospectus in order that the Prospectuses
will not include an untrue statement of a material fact or omit to state a
material fact necessary in order to make the statements therein not misleading
in the light of the circumstances existing at the time it is delivered to a
purchaser, or if it shall be necessary, in the opinion of such counsel, at any
time to amend the Registration Statement or amend or supplement any Prospectus
in order to comply with the requirements of the 1933 Act or the 1933 Act
Regulations, the Company will promptly prepare and file with the Commission,
subject to Section 3(c), such amendment or supplement as may be necessary to
correct such statement or omission or to make the Registration Statement or the
Prospectuses comply with such requirements, and the Company will furnish to the
U.S. Underwriters, without charge, such number of


                                    -19-
<PAGE>   20


copies of such amendment or supplement as the U.S. Underwriters may reasonably
request.

     (g) The Company will use its best efforts, in cooperation with the U.S.
Underwriters, to qualify the Securities for offering and sale under the
applicable securities laws of such states and other jurisdictions (domestic or
foreign) as the U.S. Representatives may designate; provided, however, that the
Company shall not be obligated to file any general consent to service of
process or to qualify as a foreign corporation or as a dealer in securities in
any jurisdiction in which it is not so qualified or to subject itself to
taxation in respect of doing business in any jurisdiction in which it is not
otherwise so subject.  In each jurisdiction in which the Securities have been
so qualified, the Company will file such statements and reports as may be
required by the laws of such jurisdiction to continue such qualification in
effect for so long as may be required in connection with distribution of the
Securities.

     (h) The Company will timely file such reports pursuant to the 1934 Act as
are necessary in order to make generally available to its securityholders as 
soon as practicable an earnings statement for the purposes of, and to provide 
the benefits contemplated by, the last paragraph of Section 11(a) of the 1933 
Act.

     (i) The Company will use the net proceeds received by it from the sale of
the Securities in the manner specified in the Prospectuses under "Use of 
Proceeds".

     (j) If, at the time that the Registration Statement became (or in the case 
of a post-effective amendment becomes) effective, any information shall have 
been omitted therefrom in reliance upon Rule 430A or Rule 434 of the 1933 Act
Regulations, then immediately following the execution of the U.S. Pricing
Agreement, the Company will prepare, and file or transmit for filing with the
Commission in accordance with such Rule 430A or Rule 434 and Rule 424(b) of the
1933 Act Regulations, copies of an amended Prospectus, or Term Sheet, or, if
required by such Rule 430A, a post-effective amendment to the Registration
Statement (including an amended Prospectus), containing all information so
omitted.


                                    -20-
<PAGE>   21

     (k) If the Company elects to rely upon Rule 462(b), the Company shall file 
a Rule 462(b) Registration Statement with the Commission in compliance with Rule
462(b) and pay the applicable fees in accordance with Rule 111 of the 1933 Act
Regulations by the earlier of (i) 10:00 p.m. Eastern time on the date of the
U.S. Pricing Agreement and (ii) the time confirmations are sent or given, as
specified by Rule 462(b)(2).

     (l) The Company, during the period when the Prospectuses are required to be
delivered under the 1933 Act or the 1934 Act, will file all documents required
to be filed with the Commission pursuant to the 1934 Act within the time
periods required by the 1934 Act and the 1934 Act Regulations.

     (m) The Company will use its best efforts to effect the listing of the
Securities on the New York Stock Exchange.

     (n) During a period of 90 days from the date of the Prospectuses, the 
Company will not, without the prior written consent of Merrill Lynch, directly
or indirectly, issue, pledge, sell, offer to sell, grant any option for the sale
of or otherwise transfer or dispose of, any share of Common Stock or any
securities convertible into or exchangeable or exercisable for Common Stock,
except for (a) the Securities to be sold hereunder or under the International
Purchase Agreement, (b) any shares of Common Stock issued or options to
purchase Common Stock granted pursuant to existing employee benefit plans of
the Company and its subsidiaries and (c) any shares of Common Stock issued
pursuant to dividend reinvestment and stock purchase plans of the Company.

     (o) During a period of three years from the Closing Time, to make generally
available to the U.S. Underwriters copies of all reports and other
communications (financial or other) mailed to stockholders, and to deliver to
the U.S. Underwriters promptly after they are available, copies of any reports
and financial statements furnished to or filed with the Commission or any
national securities exchange on which any class of securities of the Company is
listed; and shall furnish such additional information concerning the business
and financial condition of the Company as the U.S. Underwriters may from time
to time reasonably request (such financial statements to be on a consolidated
basis to the extent the accounts of the Company and


                                    -21-
<PAGE>   22


its subsidiaries are consolidated in reports furnished to its stockholders
generally or to the Commission).

     (q) None of the Company, its subsidiaries or any of their respective
directors, officers or controlling persons, will take, directly or indirectly,
any action resulting in a violation of Regulation M under the 1934 Act, or
designed to cause or result in, or that reasonably might be expected to
constitute, the stabilization or manipulation of the price of any security of
the Company to facilitate the sale or resale of the Securities.

     SECTION 4.  Payment of Expenses.  The Company will pay all expenses 
incident to the performance of its obligations under this Agreement and the 
U.S. Pricing Agreement, including, without limitation, expenses related to the
following, if incurred: (i) the preparation, delivery, printing and filing of 
the Registration Statement (including financial statements and exhibits) as
originally filed and of each amendment thereto; (ii) the printing and delivery
to the Underwriters of this Agreement, the U.S. Pricing Agreement, any
Agreement among Underwriters, any Intersyndicate Agreement and such other
documents as may be required in connection with the offering, purchase, sale
and delivery of the Securities; (iii) the preparation, issuance and delivery of
the certificates for the Securities to the Underwriters, including any stock or
other transfer taxes or any stamp or other duties payable upon the sale of the
Securities to the Underwriters and the transfer of the Securities between the
U.S. Underwriters and the International Managers; (iv) the fees and
disbursements of the Company's counsel, accountants and other advisors or
agents; (v) the qualification of the Securities under securities laws in
accordance with the provisions of Section 3(g), including filing fees and the
fees and disbursements of counsel for the U.S. Underwriters in connection
therewith and in connection with the preparation of the Blue Sky Survey and any
supplement thereto; (vi) the printing and delivery to the Underwriters of
copies of each preliminary prospectus, any Term Sheet and of the Prospectuses
and any amendments or supplements thereto; (vii) the preparation, printing and
delivery to the Underwriters of copies of the Blue Sky Survey and any
supplement thereto; (viii) the fees and expenses of any transfer agent or
registrar for the Securities, (ix) any fees payable to the Commission; and (x)
the fees and expenses incurred in connection


                                    -22-

<PAGE>   23


with the listing of the Securities on the New York Stock Exchange.

     If this Agreement is terminated by the U.S. Representatives in accordance
with the provisions of Section 5 or Section 9(a)(i) hereof, the Company shall
reimburse the U.S. Underwriters for all of their out-of-pocket expenses,
including the reasonable fees and disbursements of LeBoeuf, Lamb, Greene &
MacRae, L.L.P., counsel for the U.S. Underwriters.

     SECTION 5.  Conditions of U.S. Underwriters' Obligations.  The obligations
of the several U.S. Underwriters hereunder are subject to the accuracy of the
representations and warranties of the Company herein contained or in
certificates of any officer of the Company or any subsidiary of the Company
delivered pursuant to the provisions hereof, to the performance by the Company
of its covenants and other obligations hereunder, and to the following further
conditions:

     (a) The Registration Statement, including any Rule 462(b) Registration
Statement, has become effective under the 1933 Act  and on the date hereof and
at the Closing Time and any Date of Delivery, no stop order suspending the
effectiveness of the Registration Statement shall have been issued under the
1933 Act or proceedings therefor initiated or threatened by the Commission, and
any request on the part of the Commission for additional information shall have
been complied with to the satisfaction of counsel to the U.S. Underwriters.  A
prospectus containing information relating to the description of the
Securities, the specific method of distribution and similar matters shall have
been filed with the Commission in accordance with Rule 424(b) (or any required
post-effective amendment providing such information shall have been filed and
declared effective in accordance with the requirements of Rule 430A), or, if
the Company has elected to rely upon Rule 434 of the 1933 Act Regulations, a
Term Sheet including the Rule 434 Information shall have been filed with the
Commission in accordance with Rule 424(b).

     (b) At the Closing Time the U.S. Representatives shall have received:


                                    -23-
<PAGE>   24

        (1) The favorable opinion, dated as of the Closing Time, of Daniel L.
Schiffer, Esq., Senior Vice President, General Counsel and Secretary of the
Company, in form and substance satisfactory to counsel for the U.S.
Underwriters, together with signed or reproduced copies of such letter for each
of the other U.S. Underwriters, to the effect that:

           (i) The Company has been duly incorporated and is validly existing 
      as a corporation in good standing under the laws of the State of Michigan.

           (ii) The Company has corporate power and authority to own, lease and
      operate its properties and to conduct its business as described in the
      Prospectuses and to enter into and perform its obligations under this
      Agreement, the U.S. Pricing Agreement, the International Purchase
      Agreement and the International Pricing Agreement.

           (iii) The Company is duly qualified as a foreign corporation to 
      transact business and is in good standing in each jurisdiction in which 
      such qualification is required, whether by reason of the ownership or 
      leasing of property or the conduct of business, except where the failure
      so to qualify or to be in good standing would not result in a Material 
      Adverse Effect.

           (iv) The authorized, issued and outstanding capital stock of the 
      Company is as set forth in the Prospectuses (except for subsequent 
      issuances, if any, pursuant to the U.S. Purchase Agreement and the 
      International Purchase Agreement or pursuant to employee benefit plan or
      dividend reinvestment and stock purchase plan transactions); the shares 
      issued and outstanding capital stock of the Company have been duly 
      authorized and validly issued and are fully paid and non-assessable; and
      none of the outstanding shares of capital stock were issued in violation
      of preemptive or other similar rights of any securityholder of the 
      Company.

           (v) The Securities to be purchased by the U.S. Underwriters and the
      International Managers have been duly authorized for issuance and sale to
      the Underwriters pursuant to this Agreement and the International
      Purchase

                                    -24-

<PAGE>   25

      Agreement, respectively, and, when issued and delivered by the Company
      pursuant to this Agreement and the International Purchase Agreement,
      respectively, against payment of the consideration set forth in the U.S.
      Pricing Agreement and the International Pricing Agreement, will be
      validly issued and fully paid and non-assessable.  The form of
      certificate used to evidence the Securities is in due and proper form and
      complies with the applicable statutory requirements, with any applicable
      requirements of the charter or by-laws of the Company, and with the
      requirements of the New York Stock Exchange.

           (vi) The issuance of the Securities is not subject to preemptive or
      other similar rights arising by law or, to the best of such counsel's
      knowledge, otherwise.

           (vii) The Rights to be issued with the Securities have been duly
      authorized and, upon the issuance of the Securities, will be validly
      issued and conform in all material respects to the description thereof in
      the Prospectuses.

           (viii) Each subsidiary of the Company has been duly incorporated and 
      is validly existing as a corporation in good standing under the laws of 
      the jurisdiction of its incorporation, has the corporate power and
      authority to own, lease and operate its properties and to conduct its
      business as presently conducted and as described in the Prospectuses, and
      is duly qualified as a foreign corporation to transact business and is in
      good standing in each jurisdiction in which such qualification is
      required, whether by reason of the ownership or leasing of property or
      the conduct of business, except where the failure to so qualify or be in
      good standing would not have a Material Adverse Effect.  Except as
      otherwise disclosed in the Registration Statement and the Prospectuses,
      all of the issued and outstanding capital stock of each such subsidiary
      of the Company has been duly authorized and validly issued, is fully paid
      and non-assessable and all such shares are owned by the Company, directly
      or through its subsidiaries, free and clear of any security interest,
      mortgage, pledge, lien, encumbrance, claim or equity.  None of the
      outstanding shares of capital stock of any subsidiary of the Company was
      issued in


                                    -25-

<PAGE>   26

      violation of preemptive or other similar rights of any securityholder of
      such subsidiary.

           (ix) This Agreement, the U.S. Pricing Agreement, the International
      Purchase Agreement and the International Pricing Agreement have been duly
      authorized, executed and delivered by the Company.

           (x) The Registration Statement, including any Rule 462(b) 
      Registration Statement, has been declared effective under the 1933 Act; 
      any required filing of the prospectuses pursuant to Rule 424(b) has been
      made in the manner and within the time period required by Rule 424(b); 
      and, to the best knowledge of such counsel, no stop order suspending the
      effectiveness of the Registration Statement or any Rule 462(b)
      Registration Statement has been issued under the 1933 Act and no
      proceedings therefor have been initiated or threatened by the Commission.

           (xi) The Registration Statement, including any Rule 462(b) 
      Registration Statement, the Rule 430A Information and the Rule 434
      Information, as applicable, the Prospectuses, excluding the documents
      incorporated by reference therein, and each amendment or supplement to
      the Registration Statement and Prospectuses, excluding the documents
      incorporated by reference therein, as of their respective effective or
      issue dates (other than the financial statements and supporting schedules
      included therein, as to which such counsel need express no opinion),
      complied as to form in all material respects with the requirements of the
      1933 Act and the 1933 Act Regulations.

           (xii) The documents incorporated by reference in the Prospectuses 
      (other than the financial statements and supporting schedules therein, as 
      to which such counsel need express no opinion), when they were filed with
      the Commission complied as to form in all material respects with the
      requirements of the 1934 Act and the 1934 Act Regulations.

           (xiii) The Company meets the registrant requirements for use of 
      Form S-3 under the 1933 Act Regulations.



                                    -26-
<PAGE>   27

           (xiv) The execution, delivery and performance by the Company of this
      Agreement, the U.S. Pricing Agreement, the International Purchase
      Agreement and the International Pricing Agreement and the consummation of
      the transactions contemplated herein and therein and in the Registration
      Statement and Prospectus and compliance by the Company with its
      obligations hereunder and thereunder do not and will not, whether with or
      without the giving of notice or passage of time or both, conflict with or
      constitute a breach of, or default under or result in the creation or
      imposition of any lien, charge or encumbrance upon any property or assets
      of the Company or any subsidiary thereof pursuant to any contract,
      indenture, mortgage, deed of trust, loan or credit agreement, note, lease
      or any other agreement or instrument to which the Company or any of its
      subsidiaries is a party or by which it or any of them may be bound, or to
      which any of the properties, assets or operations of the Company or any
      of its subsidiaries is subject, except for such conflicts, breaches,
      defaults, liens, charges or encumbrances that would not result in a
      Material Adverse Effect, nor will such action result in any violation of
      the provisions of the charter or by-laws of the Company or any subsidiary
      thereof, or any applicable law, statute, rule, regulation, judgment,
      order, writ or decree of any government, governmental instrumentality or
      court, domestic or foreign, having jurisdiction over the Company or any
      of its subsidiaries or any of their respective properties, assets or
      operations.

           (xv) To the best of such counsel's knowledge, there is no action, 
      suit, proceeding, inquiry or investigation before or by any court or
      governmental agency or body, domestic or foreign, pending or threatened,
      against or affecting the Company or any subsidiary thereof which is
      required to be disclosed in the Registration Statement and the
      Prospectuses (other than as disclosed therein), or which might reasonably
      be expected to result in a Material Adverse Effect, or which might
      reasonably be expected to materially and adversely affect the assets,
      properties or operations thereof of the consummation of the transactions
      contemplated in this Agreement, the U.S. Pricing Agreement, the
      International Purchase Agreement and the International



                                    -27-
<PAGE>   28


      Pricing Agreement or the performance by the Company of its obligations
      hereunder and thereunder.

           (xvi) The information in the Prospectuses under the captions "MCN 
      Energy Group Inc.," "Use of Proceeds", "Certain United States Tax 
      Consequences to Non-United States Holders," "Capitalization," and 
      "Description of MCN Capital Stock",to the extent that they involve 
      matters of law, summaries of legal matters, the Company's charter and 
      by-laws or legal proceedings, or legal conclusions, has been reviewed by
      such counsel and is correct in all material respects.

           (xvii) To the best of such counsel's knowledge and information, 
      neither the Company or any subsidiary thereof is in violation of its
      charter or by-laws and no default by the Company or any subsidiary
      thereof exists in the due performance or observance of any material
      obligation, agreement, covenant or condition contained in any contract,
      indenture, mortgage, loan or credit agreement, note, lease, or other
      agreement or instrument to which the Company or any of its subsidiaries
      is a party or by which it or any of them or any of their respective
      properties or assets are bound, except for violations and defaults that
      would not result in a Material Adverse Effect.

           (xviii) All descriptions in the Prospectuses of contracts and other
      documents to which the Company or its subsidiaries are a party are
      accurate in all material respects.  To the best of such counsel's
      knowledge and information, there are no franchises, contracts,
      indentures, mortgages, loan or credit agreements, notes, leases or other
      instruments required to be described or referred to in the Registration
      Statement or incorporated by reference as exhibits thereto other than
      those described or referred to therein or filed or incorporated by
      reference as exhibits thereto, and the descriptions thereof or references
      thereto are correct in all material respects.

           (xix) No filing with, authorization, approval, consent, license, 
      order, registration, qualification or decree of, any court or governmental
      authority or agency, domestic or foreign (other than under the 1933 Act
      and the


                                    -28-
<PAGE>   29


      1933 Act Regulations, which have been obtained, or as may be required
      under the securities or blue sky laws of the various states, as to which
      such counsel need express no opinion) is necessary or required in
      connection with the due authorization, execution and delivery of this
      Agreement, the U.S. Pricing Agreement, the International Purchase
      Agreement and the International Pricing Agreement or for the offering,
      issuance and sale of the Securities or the performance by the Company of
      its obligations in this Agreement, the U.S. Pricing Agreement, the
      International Purchase Agreement and the International Pricing Agreement.

           (xx) The Company and its subsidiaries possess all licenses, 
      franchises, permits, certificates, authorizations, approvals, consents
      and orders of all governmental authorities or agencies necessary for the
      ownership or lease of the material properties owned or leased by each of
      them and for the operation of the business carried on by each of them as
      described in the Registration Statement and the Prospectuses with such
      exceptions as are not material and do not materially interfere with the
      conduct of the business of the Company and its subsidiaries, considered
      as one enterprise; all such licenses, franchises, permits, certificates,
      authorizations, approvals, consents and orders are in full force and
      effect and contain no unduly burdensome provisions that would interfere
      with the conduct of the business of the Company and its subsidiaries,
      considered as one enterprise and, except as otherwise set forth in the
      Registration Statement or the Prospectus, there are no legal or
      governmental proceedings pending or threatened that would result in a
      material modification, suspension or revocation thereof.

           (xxi) The Company is not an "investment company" or an entity under
      the "control" of an "investment company" as such terms are defined in the
      1940 Act.

           (xxii) The Company is presently exempt from the provisions of the 
      Public Utility Holding Company Act of 1935 (except Section 9 thereof) 
      which would otherwise require it to register thereunder.


                                    -29-
<PAGE>   30
           Moreover, such counsel shall confirm that nothing has come to such
      counsel's attention that would lead such counsel to believe that the
      Registration Statement, including any Rule 430A Information and Rule 434
      Information (if applicable)(except for financial statements and the notes
      thereto, the financial schedules and any other financial data included or
      incorporated by reference therein, as to which counsel need express no
      opinion), at the time such Registration Statement became effective or at
      the date of the U.S. Pricing Agreement, contained an untrue statement of
      a material fact or omitted to state a material fact required to be stated
      therein or necessary to make the statements therein not misleading or
      that the Prospectuses or any amendment or supplement thereto (except for
      financial statements and the notes thereto, the financial schedules, and
      any other financial data included or incorporated by reference therein,
      as to which counsel need express no opinion), at the time the
      Prospectuses were issued, at the time of any such amended or supplemented
      Prospectuses were issued or at the Closing Time, included or includes an
      untrue statement of a material fact or omitted or omits to state a
      material fact necessary in order to make the statements therein, in the
      light of the circumstances under which they were made, not misleading.

        (2) The favorable opinion, dated as of then Closing Time, of LeBoeuf, 
Lamb, Greene & MacRae, L.L.P., counsel for the U.S. Underwriters, together with
signed or reproduced copies of such letter for each of the other Underwriters
with respect to the matters set forth in clauses (i), (v), (vi), (ix), (x),
(xi) and the last paragraph of Section 5(b)(1).  In giving such opinion,
LeBoeuf, Lamb, Greene & MacRae, L.L.P. may rely as to certain matters of
Michigan law upon the opinion of Daniel L. Schiffer, Esq., counsel for the
Company, which shall be delivered in accordance with Section 5(b)(1) hereof.

     (c) At the Closing Time, the U.S. Representatives shall have received a
certificate of the President or a Vice-President of the Company and of the
Chief Financial Officer or Chief Accounting Officer of the Company and dated as
of the Closing Time, to the effect that (i) there has been no material adverse
change in the condition, financial or otherwise, or in the earnings, business
affairs or business prospects of the Company


                                    -30-

<PAGE>   31


and its subsidiaries considered as one enterprise, whether or not in the
ordinary course of business, (ii) the representations and warranties in Section
1 hereof are true and correct with the same force and effect as though
expressly made at and as of the Closing Time, (iii) the Company has complied
with all agreements and satisfied all conditions on its part to be performed or
satisfied at or prior to the Closing Time, and (iv) no stop order suspending
the effectiveness of the Registration Statement has been issued and no
proceedings for that purpose have been initiated or threatened by the
Commission.

    (d) At the time of the execution of this Agreement, the U.S. Representatives
shall have received from Deloitte & Touche LLP a letter dated such date in form
and substance satisfactory to the U.S. Representatives, together with signed or
reproduced copies of such letter for each of the other U.S. Underwriters, to
the effect set forth below and as to such other matters as the U.S.
Representatives may reasonably request, that:

           (i) They are independent certified public accountants with respect
      to the Company and its subsidiaries within the meaning of the 1933 Act
      and the 1933 Act Regulations;

           (ii) In their opinion, the consolidated financial statements and any
      financial statement schedules audited by them and included or
      incorporated by reference in the Registration Statement and the
      Prospectuses as amended or supplemented comply as to form in all material
      respects with the applicable accounting requirements of the 1933 Act and
      the 1933 Act Regulations and the 1934 Act and the 1934 Act Regulations;

           (iii) On the basis of limited procedures, not constituting an audit
      in accordance with generally accepted auditing standards, including a
      review in accordance with standards established by the American Institute
      of Certified Public Accountants of the unaudited condensed consolidated
      financial statements included in the Company's Quarterly Reports on Form
      10-Q incorporated by reference in the Registration Statement and the
      Prospectuses as amended or supplemented for the periods specified in such
      letter, a reading of the latest available unaudited interim consolidated
      financial statements of the Company and its


                                    -31-
<PAGE>   32


      subsidiaries, a reading of the minutes of the Company and its
      subsidiaries since the audited consolidated financial statements set
      forth in the Company's Annual Report on Form 10-K for the most recent
      year, inquiries of officials of the Company and its subsidiaries
      responsible for financial and accounting matters and such other inquiries
      and procedures as may be specified in such letter, nothing came to their
      attention that caused them to believe that:

                 (A) the unaudited condensed consolidated financial statements
            set forth in the Company's Quarterly Reports on Form 10-Q
            incorporated by reference in the Registration Statement and the
            Prospectuses as amended or supplemented do not comply as to form in
            all material respects with the applicable accounting requirements
            of the 1934 Act and the 1934 Act Regulations as they apply to Form
            10-Q or any material modifications should be made for them to be in
            conformity with generally accepted accounting principles applied on
            a basis substantially consistent with that of the audited
            consolidated financial statements set forth in the Company's Annual
            Report on Form 10-K for the most recent year ended incorporated by
            reference in the Registration Statement and the Prospectuses as
            amended or supplemented;

                 (B) any other unaudited income statement data and balance
            sheet items included in the Prospectuses as amended or supplemented
            do not agree with the corresponding items in the unaudited
            consolidated financial statements from which such data and items
            were derived;

                 (C)  any unaudited pro forma consolidated condensed financial
            statements or any unaudited pro forma consolidating financial
            statements included or incorporated by reference in the
            Prospectuses as amended or supplemented do not comply as to form in
            all material respects with the applicable accounting requirements
            of the 1933 Act and the 1933 Act Regulations and the 1934 Act and
            the 1934 Act Regulations or the pro forma adjustments have not been



                                    -32-
<PAGE>   33


            properly applied to the historical amounts in the compilation of 
            those statements;

                 (D) as of a specified date not more than five days prior to
            the date of this Agreement, there has been any decrease or increase
            in the common stock (except for any increases in connection with
            any employee benefit, dividend reinvestment or stock purchase plan
            of the Company) or any increase or decrease in redeemable
            cumulative preferred securities or long-term debt including capital
            lease obligations and current maturities (except for sinking fund
            and installment requirements under their long-term debt agreements,
            terms of the preferred securities of subsidiaries and purchases in
            the open market in anticipation thereof) or any increase in
            short-term debt, or any decrease in consolidated common
            shareholders' equity of the Company and its consolidated
            subsidiaries (other than periodic dividends declared to
            shareholders and any decreases pursuant to the terms of the
            preferred redeemable increased dividend equity securities of the
            Company), in each case as compared with the corresponding amounts
            shown in the latest consolidated statement of financial position of
            the Company and its subsidiaries incorporated by reference in the
            Registration Statement and the Prospectuses as amended or
            supplemented, except in each case for increases or decreases which
            the Prospectuses as amended or supplemented, including financial
            information incorporated by reference, discloses have occurred or
            may occur or which are described in such letter; and

                 (E) for the period from the date of the latest consolidated
            financial statements included or incorporated by reference in the
            Prospectuses as amended or supplemented to the end of the latest
            period for which unaudited condensed consolidated financial
            statements or financial information are available there were any
            decreases in consolidated operating revenues, operating income, net
            income or earnings available for Common Stock of the Company and
            its consolidated subsidiaries, or any increases in any items
            specified


                                    -33-
<PAGE>   34


            by the U.S. Representatives, in each case as compared with the
            corresponding period in the preceding year and with any other
            period of corresponding length specified by the U.S.
            Representatives, except in each case for increases or decreases
            which the Prospectuses as amended or supplemented, including
            financial information incorporated by reference, discloses have
            occurred or may occur or which are described in such letter; and

                 (F) the unaudited condensed consolidated financial statements
            referred to in Clause (E) are not stated on a basis substantially
            consistent with the audited consolidated financial statements
            incorporated by reference in the Registration Statement and the
            Prospectuses as amended or supplemented.

           (iv) The unaudited selected financial information with respect to
      the consolidated results of operations and financial position of the
      Company for the five most recent fiscal years included in the
      Prospectuses as amended or supplemented and included or incorporated by
      reference in the Company's Annual Report on Form 10-K for the most recent
      fiscal year agrees with the corresponding amounts (after restatement
      where applicable) in the audited consolidated financial statements for
      such five fiscal years which were included or incorporated by reference
      in the Company's Annual Reports on Form 10-K for such fiscal years;

           (v) In addition to the limited procedures, reading of minutes,
      inquiries and other procedures referred to in clause (iii) and (iv)
      above, they have carried out certain other specified procedures, not
      constituting an audit in accordance with generally accepted auditing
      standards, with respect to certain amounts, percentages and financial
      information which are derived from the general accounting and financial
      records of the Company and its subsidiaries, which appear in the
      Prospectuses as amended or supplemented and the Registration Statement,
      in the Company's Annual Report on Form 10-K for the latest year ended and
      in the Company's Quarterly Reports on Form 10-Q since the latest Annual
      Report on Form 10-K and which are specified by the U.S. Representatives,
      and have compared certain of such


                                    -34-
<PAGE>   35


      amounts, percentages and financial information with the accounting and 
      financial records of the Company and its subsidiaries and have found them 
      to be in agreement; and

           (vi) If applicable and agreed to by the parties, they have made a
      review in accordance with standards established by the American Institute
      of Certified Public Accountants of the selected financial data, pro forma
      financial information, prospective financial statements, consolidating
      financial statements and/or condensed financial statements derived from
      audited financial statements of the Company for the periods specified in
      such letter, as indicated in their reports thereon, copies of which have
      been furnished to the U.S. Representatives.

      (e) At the Closing Time, the U.S. Representatives shall have received from
Deloitte & Touche LLP a letter, dated as of the Closing Time, to the effect
that they reaffirm the statements made in the letter furnished pursuant to
subsection (d) of this Section, except that the specified date referred to
shall be a date not more than three business days prior to the Closing Time.

     (f) At the Closing Time the Securities shall have been approved for 
listing on the New York Stock Exchange, subject only to official notice of 
issuance.

     (g) Contemporaneously with the purchase by the U.S. Underwriters of the
Initial U.S. Securities under this Agreement, the International Managers shall
have purchased the Initial International Securities under the International
Purchase Agreement.

     (h) At the Closing Time, and at each Date of Delivery, if any, counsel
for  the U.S. Underwriters shall have been furnished with such documents and 
opinions as they may require for the purpose of enabling them to pass upon the
issuance and sale of the Securities as herein contemplated, or in order to 
evidence the accuracy of any of the representations or warranties, or the
fulfillment of any of the conditions herein contained; and all proceedings
taken by the Company in connection with the issuance and sale of the Securities
as herein contemplated shall be satisfactory in form and substance to the U.S.
Representatives and counsel for the U.S. Underwriters.


                                    -35-
<PAGE>   36

     (i) In the event that the U.S. Underwriters exercise their option 
provided in Section 2(b) hereof to purchase all or any portion of the U.S. 
Option Securities, the representations and warranties of the Company contained
herein and the statements in any certificates furnished by the Company 
hereunder shall be true and correct as of, and as if made on, each Date of 
Delivery, and at the relevant Date of Delivery, the U.S. Representatives shall
have received:

           (1) A certificate, dated such Date of Delivery, of the President or a
      Vice-President of the Company and the Chief Financial Officer or Chief
      Accounting Officer of the Company  confirming that the certificate
      delivered at the Closing Time pursuant to Section 5(e) hereof is true and
      correct as of such Date of Delivery.

           (2) The favorable opinion of Daniel L. Schiffer, Esq., Senior Vice
      President, General Counsel and Secretary for the Company, in form and
      substance satisfactory to counsel for the U.S. Underwriters, dated such
      Date of Delivery, relating to the U.S. Option Securities to be purchased
      on such Date of Delivery and otherwise to the same effect as the opinion
      required by Section 5(b)(1) hereof.

           (3) The favorable opinion of LeBoeuf, Lamb, Greene & MacRae, L.L.P.,
      counsel for the U.S. Underwriters, dated such Date of Delivery, relating
      to the U.S. Option Securities to be purchase on such Date of Delivery and
      otherwise to the same effect as the opinion required by Section 5(b)(2)
      hereof.

           (4) A letter from Deloitte & Touche LLP in form and substance
      satisfactory to the U.S. Representatives and dated such Date of Delivery,
      substantially in the same form and substance as the letter furnished to
      the U.S. Representatives pursuant to Section 5(d) hereof, except that the
      "specified date" on the letter furnished pursuant to this paragraph shall
      be a date not more than five days prior to such Date of Delivery.

      If any condition specified in this Section shall not have been fulfilled
when and as required to be fulfilled, this Agreement, or, in the case of any
condition to the purchase of U.S.


                                    -36-
<PAGE>   37


Options Securities on a Date of Delivery which is after the Closing Time, the
obligations of the several U.S. Underwriters to purchase the relevant Option
Securities, may be terminated by the U.S. Representatives by notice to the
Company at any time at or prior to the Closing Time or such Date of Delivery,
as the case may be, and such termination shall be without liability of any
party to any other party except as provided in Section 4 and except that
Sections 1, 6, 7 and 8 shall survive any such termination and remain in full
force and effect.

     SECTION 6.  Indemnification.

     (a) The Company agrees to indemnify and hold harmless each U.S. Underwriter
and each person, if any, who controls any U.S. Underwriter within the meaning
of Section 15 of the 1933 Act or Section 20 of the 1934 Act as follows:

           (i) against any and all loss, liability, claim, damage and expense
      whatsoever, as incurred, arising out of any untrue statement or alleged
      untrue statement of a material fact contained in the Registration
      Statement (or any amendment thereto), including the Rule 430A Information
      and the Rule 434 Information, if applicable, or the omission or alleged
      omission therefrom of a material fact required to be stated therein or
      necessary to make the statements therein not misleading or arising out of
      any untrue statement or alleged untrue statement of a material fact
      contained in any preliminary prospectus or the Prospectuses (or any
      amendment or supplement thereto), or the omission or alleged omission
      therefrom of a material fact necessary in order to make the statements
      therein, in the light of the circumstances under which they were made,
      not misleading;

           (ii) against any and all loss, liability, claim, damage and expense
      whatsoever, as incurred, to the extent of the aggregate amount paid in
      settlement of any litigation, or any investigation or proceeding by any
      governmental agency or body, commenced or threatened, or of any claim
      whatsoever based upon any such untrue statement or omission, or any such
      alleged untrue statement or omission, provided, that (subject to Section
      6(d) below) any such settlement is effected with the written consent of
      the Company; and



                                    -37-
<PAGE>   38

           (iii) against any and all expense whatsoever, as incurred 
      (including, the fees, expenses and disbursements of counsel chosen by 
      Merrill Lynch), reasonably incurred in investigating, preparing or 
      defending against any litigation, or any investigation or proceeding by 
      any governmental agency or body, commenced or threatened, or any claim 
      whatsoever based upon any such untrue statement or omission, or any such
      alleged untrue statement or omission, to the extent that any such 
      expense is not paid under (i) or (ii) above;

provided, however, that this foregoing indemnity agreement shall not apply to
any loss, liability, claim, damage or expense to the extent arising out of any
untrue statement or omission or alleged untrue statement or omission made in
reliance upon and in conformity with written information furnished to the
Company by any U.S. Underwriter through Merrill Lynch expressly for use in the
Registration Statement (or any amendment thereto), including the Rule 430A
Information and the Rule 434 Information, if applicable, or any preliminary
prospectus or the U.S. Prospectus (or any amendment or supplement thereto);
provided, further, that such indemnity with respect to the preliminary
prospectus shall not inure to the benefit of the U.S. Underwriters (or any
person controlling such U.S. Underwriters) from whom the person asserting any
such loss, liability, claim, damage or expense purchased any of the Securities
which are the subject thereof if such person did not receive a copy of the U.S.
Prospectus (or the U.S. Prospectus as amended or supplemented) (in each case
exclusive of the documents from which information is incorporated by reference)
at or prior to the written confirmation of the sale of such U.S. Securities to
such person in any case where the Company complied with its obligations under
Sections 3(c) and 3(g) hereof and any such untrue statement or omission or
alleged untrue statement or omission of a material fact contained in such
preliminary prospectus (or any amendment or supplement thereto) was corrected
in the U.S. Prospectus (or the U.S. Prospectus as amended or supplemented).

     (b) Each U.S. Underwriter severally agrees to indemnify and hold harmless
the Company, its directors, each of its officers who signed the Registration
Statement and each person, if any, who controls the Company within the meaning
of Section 15 of the 1933 Act or Section 20 of the 1934 Act against any and all
loss,


                                    -38-
<PAGE>   39


liability, claim, damage and expense described in the indemnity contained 
in subsection (a) of this Section, as incurred, but only with respect to 
untrue statements or omissions, or alleged untrue statements or omissions,
made in the Registration Statement (or any amendment thereto), including the
Rule 430A Information and the Rule 434 Information, if applicable, or any
preliminary prospectus or the U.S. Prospectus (or any amendment or supplement
thereto) in reliance upon and in conformity with written information furnished
to the Company by such U.S. Underwriter through Merrill Lynch expressly for use
in the Registration Statement (or any amendment thereto) or such preliminary
prospectus or the U.S. Prospectus (or any amendment or supplement thereto).

     (c) Each indemnified party shall give notice as promptly as reasonably
practicable to each indemnifying party of any action commenced against it in
respect of which indemnity may be sought hereunder, but failure to so notify an
indemnifying party shall not relieve such indemnifying party from any liability
hereunder to the extent it is not materially prejudiced as a result thereof and
in any event shall not relieve it from any liability which it may have
otherwise than on account of this indemnity agreement.  In the case of parties
indemnified pursuant to Section 6(a) above, counsel to the indemnified parties
shall be selected by Merrill Lynch, and, in the case of parties indemnified
pursuant to Section 6(b) above, counsel to the indemnified parties shall be
selected by the Company.  An indemnifying party may participate at its own
expense in the defense of any such action; provided, however, that counsel to
the indemnifying party shall not (except with the consent of the indemnified
party) also be counsel to the indemnified party.  In no event shall the
indemnifying parties be liable for fees and expenses of more than one counsel
(in addition to any local counsel) separate from their own counsel for all
indemnified parties in connection with any one action or separate but similar
or related actions in the same jurisdiction arising out of the same general
allegations or circumstances.  No indemnifying party shall, without the prior
written consent of the indemnified parties, settle or compromise or consent to
the entry of any judgment with respect to any litigation, or any investigation
or proceeding by any governmental agency or body, commenced or threatened, or
any claim whatsoever in respect of which indemnification or contribution could
be sought under this Section 6 or Section 7



                                    -39-
<PAGE>   40


hereof (whether or not the indemnified parties are actual or potential parties
thereto), unless such settlement, compromise or consent (i) includes an
unconditional release of each indemnified party from all liability arising out
of such litigation, investigation, proceeding or claim and (ii) does not
include a statement as to or an admission of fault, culpability or a failure to
act by or on behalf of any indemnified party.

     (d) If at any time an indemnified party shall have requested an 
indemnifying party to reimburse the indemnified party for fees and expenses of
counsel, such indemnifying party agrees that it shall be liable for any
settlement of the nature contemplated by Section 6(a)(ii) effected without its
written consent if (i) such settlement is entered into more than 45 days after
receipt by such indemnifying party of the aforesaid request, (ii) such
indemnifying party shall have received notice of the terms of such settlement
at least 30 days prior to such settlement being entered into and (iii) such
indemnifying party shall not have reimbursed such indemnified party in
accordance with such request prior to the date of such settlement.

     SECTION 7.  Contribution. If the indemnification provided for in Section 6
hereof is for any reason unavailable to or insufficient to hold harmless an
indemnified party in respect of any losses, liabilities, claims, damages or
expenses referred to therein, then each indemnifying party shall contribute to
the aggregate amount of such losses, liabilities, claims, damages and expenses
incurred by such indemnified party, as incurred, (i) in such proportion as is
appropriate to reflect the relative benefits received by the Company on the one
hand and the U.S. Underwriters on the other hand from the offering of the U.S.
Securities pursuant to this Agreement or (ii) if the allocation provided by
clause (i) is not permitted by applicable law, in such proportion as is
appropriate to reflect not only the relative benefits referred to in clause (i)
above but also the relative fault of the Company on the one hand and the U.S.
Underwriters on the other hand in connection with the statements or omissions
which resulted in such losses, liabilities, claims, damages or expenses, as
well as any other relevant equitable considerations.

     The relative benefits received by the Company on the one hand and the U.S.
Underwriters on the other hand in connection


                                    -40-
<PAGE>   41


with the offering of the U.S. Securities pursuant to this Agreement shall be
deemed to be in the same respective proportions as the total net proceeds from
the offering of such U.S. Securities pursuant to this Agreement (before
deducting expenses) received by the Company and the total underwriting discount
received by the U.S. Underwriters, in each case as set forth on the cover of
the U.S. Prospectus, or, if Rule 434 is used, the corresponding location on the
Term Sheet, bear to the aggregate initial public offering price of such U.S.
Securities as set forth on such cover.

     The relative fault of the Company on the one hand and the U.S.
Underwriters on the other hand shall be determined by reference to, among other
things, whether the untrue or alleged untrue statement of a material fact or
the omission or alleged omission to state a material fact relates to
information supplied by the Company or by the U.S. Underwriters and the
parties' relative intent, knowledge, access to information and opportunity to
correct or prevent such statement or omission.

     The Company and the U.S. Underwriters agree that it would not be just and
equitable if contribution pursuant to this Section 7 were determined by pro
rata allocation (even if the U.S. Underwriters were treated as one entity for
such purpose) or by any other method of allocation which does not take account
of the equitable considerations referred to above in this Section 7.  The
aggregate amount of losses, liabilities, claims, damages and expenses incurred
by an indemnified party and referred to above in this Section 7 shall be deemed
to include any legal or other expenses reasonably incurred by such indemnified
party in investigating, preparing or defending against any litigation, or any
investigation or proceeding by any governmental agency or body, commenced or
threatened, or any claim whatsoever based upon any such untrue or alleged
untrue statement or omission or alleged omission.

     Notwithstanding the provisions of this Section 7, no U.S. Underwriter
shall be required to contribute any amount in excess of the amount by which the
total price at which the U.S. Securities underwritten by it and distributed to
the public were offered to the public exceeds the amount of any damages which
such U.S. Underwriter has otherwise been required to pay by


                                    -41-
<PAGE>   42


reason of any such untrue or alleged untrue statement or omission or alleged
omission.

     No person guilty of fraudulent misrepresentation (within the meaning of
Section 11(f) of the 1933 Act) shall be entitled to contribution from any
person who was not guilty of such fraudulent misrepresentation.

     For purposes of this Section 7, each person, if any, who controls a U.S.
Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of
the 1934 Act shall have the same rights to contribution as such U.S.
Underwriter, and each director of the Company, each officer of the Company who
signed the Registration Statement, and each person, if any, who controls the
Company within the meaning of Section 15 of the 1933 Act or Section 20 of the
1934 Act shall have the same rights to contribution as the Company.  The U.S.
Underwriters' respective obligations to contribute pursuant to this Section 7
are several in proportion to the number of Initial U.S. Securities set forth
opposite their respective names in Schedule A to this Agreement, and not joint.

     SECTION 8.  Representations, Warranties and Agreements to Survive Delivery.
All representations, warranties and agreements contained in this Agreement and
the U.S. Pricing Agreement, or contained in certificates of officers of the
Company or any of its subsidiaries submitted pursuant hereto, shall remain
operative and in full force and effect, regardless of any investigation made by
or on behalf of any U.S. Underwriter or controlling person, or by or on behalf
of the Company, and shall survive delivery of and payment for the Securities to
the U.S. Underwriters.



     SECTION 9.  Termination of Agreement.

     (a) The U.S. Representatives may terminate this Agreement, by notice to the
Company at any time at or prior to the Closing Time, if (i) there has been,
since the date of this Agreement or since the respective dates as of which
information is given in the U.S. Prospectus, any material adverse change or any


                                    -42-
<PAGE>   43
development which could reasonably be expected to result in a prospective 
material adverse change, financial or otherwise, or in the earnings, business 
affairs or business prospects of the Company and its subsidiaries considered as 
one enterprise, whether or not arising in the ordinary course of business, or 
(ii) there has occurred any material adverse change in the financial markets in 
the United States or any outbreak of hostilities or escalation of hostilities or
other calamity or crisis, or any change or development involving a prospective
change in national or international political, financial or economic conditions
the effect of which is such as to make it, in the judgment of the U.S.
Representatives, impracticable to market the Securities or to enforce contracts
for the sale of the Securities, or (iii) if trading in the Common Stock or any
other security of the Company has been suspended or limited by the Commission,
National Association of Securities Dealers, Inc. or the New York Stock
Exchange, or if trading generally on either the American Stock Exchange, the
New York Stock Exchange or in the over-the-counter market has been suspended or
limited, or minimum or maximum prices for trading have been fixed, or maximum
ranges for prices for securities have been required, by either of said
exchanges or by such system or by order of the Commission, NASD or any other
governmental authority, or (iv) if a banking moratorium has been declared by
either Federal, New York or Michigan authorities.

     (b) If this Agreement and the U.S. Pricing Agreement are terminated 
pursuant to this Section 9, such termination shall be without liability of any
party to any other party except as provided in Section 4, and provided, 
further, that Sections 1, 6, 7 and 8 shall survive such termination and remain
in full force and effect.

     SECTION 10.  Default by One or More of the U.S. Underwriters.  If one
or  more of the U.S. Underwriters shall fail at the Closing Time or a Date of
Delivery to purchase the Securities which it or they are obligated to purchase
under this Agreement and the U.S. Pricing Agreement (the "Defaulted
Securities"), the U.S. Representatives shall have the right, within 24 hours
thereafter, to make arrangements for one or more of the non-defaulting U.S.
Underwriters, or any other underwriters, to purchase all, but not less than
all, of the Defaulted Securities in such amounts as may be agreed upon and


                                    -43-
<PAGE>   44


upon the terms herein set forth; if, however, the U.S. Representatives shall
not have completed such arrangements within such 24-hour period, then:

        (a) if the number of Defaulted Securities does not exceed 10% of the 
number of U.S. Securities to be purchased on such date, each of the 
non-defaulting U.S. Underwriters shall be obligated, severally and not jointly, 
to purchase the full amount thereof in the proportions that their respective 
underwriting obligations hereunder bear to the underwriting obligations of all
non-defaulting U.S. Underwriters, or

        (b) if the number of Defaulted Securities exceeds 10% of the number of
U.S. Securities to be purchased on such date, this Agreement, or with respect
to any Date of Delivery which occurs after the Closing Time, the obligations of
the U.S. Underwriters to purchase and of the Company to sell the Option
Securities to be purchase and sold on such Date of Delivery shall terminate
without liability on the part of any non-defaulting U.S. Underwriter.

        No action taken pursuant to this Section 10 shall relieve any
defaulting U.S. Underwriter from liability in respect of its default.

        In the event of any such default which does not result in a termination
of this Agreement or, in the case of a Date of Delivery which is after the
Closing Time, which does not result in a termination of the obligation of the
U.S. Underwriters to purchase and the Company to sell the relevant U.S. Option
Securities, as the case may be, either the U.S. Representatives or the Company
shall have the right to postpone the Closing Time or the relevant Date of
Delivery, as the case may be, for a period not exceeding seven days in order to
effect any required changes in the Registration Statement or the Prospectuses
or in any other documents or arrangements.  As used herein, the term "U.S.
Underwriter" includes any person substituted for an U.S. Underwriter under this
Section 10.

     SECTION 11.  Notices.  All notices and other communications hereunder shall
be in writing and shall be deemed to have been duly given if mailed or
transmitted by any standard form of telecommunication.  Notices to the U.S.
Underwriters shall be



                                    -44-
<PAGE>   45


directed to the U.S. Representatives at North Tower, World Financial Center, New
York, New York 10281-1202, attention of Anthony V. Leness, Managing Director,
with a copy to LeBoeuf, Lamb, Greene & MacRae, L.L.P., 125 West 55th Street,
New York, New York  10019-5389, attention of William S. Lamb, Esq.; notices to
the Company shall be directed to it at MCN Energy Group Inc., 500 Griswold
Street, Detroit, Michigan 48226, attention of Daniel L. Schiffer, Esq., Senior
Vice President, General Counsel and Secretary.

     SECTION 12.  Parties.  This Agreement and the U.S. Pricing Agreement shall
each inure to the benefit of and be binding upon the Company and the U.S.
Underwriters and their respective successors.  Nothing expressed or mentioned
in this Agreement or the U.S. Pricing Agreement is intended or shall be
construed to give any person, firm or corporation, other than the U.S.
Underwriters and the Company and their respective successors and the
controlling persons and officers and directors referred to in Sections 6 and 7
and their heirs and legal representatives, any legal or equitable right, remedy
or claim under or in respect of this Agreement or the U.S. Pricing Agreement or
any provision herein or therein contained.  This Agreement and the U.S. Pricing
Agreement and all conditions and provisions hereof and thereof are intended to
be for the sole and exclusive benefit of the parties hereto and thereto and
their respective successors and legal representatives, and said controlling
persons and officers and directors and their heirs and legal representatives,
and for the benefit of no other person, firm or corporation.  No purchaser of
Securities from any U.S. Underwriter shall be deemed to be a successor by
reason merely of such purchase.

     SECTION 13.  GOVERNING LAW AND TIME.  THIS AGREEMENT AND THE U.S. PRICING
AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE
STATE OF NEW YORK APPLICABLE TO AGREEMENTS MADE AND TO BE PERFORMED IN SAID
STATE.  SPECIFIED TIMES OF DAY REFER TO NEW YORK CITY TIME UNLESS OTHERWISE
INDICATED.

     SECTION 14.  Effect of Headings.  The Article and Section headings herein
are for convenience only and shall not affect the construction hereof.

                                    -45-
<PAGE>   46


        If the foregoing is in accordance with your understanding of our
agreement, please sign and return to the Company a counterpart hereof,
whereupon this instrument, along with all counterparts, shall become a binding
agreement between the U.S. Underwriters and the Company in accordance with its
terms.


                                        Very truly yours,

                                        MCN ENERGY GROUP INC.




                                        By:/s/ Sebastian Coppola                
                                           ----------------------------------
                                           Name: Sebastian Coppola           
                                           Title: Senior Vice President and
                                                  Treasurer




CONFIRMED AND ACCEPTED,
  as of the date first above written:

MERRILL LYNCH & CO.
MERRILL LYNCH, PIERCE, FENNER & SMITH
            INCORPORATED
DONALDSON, LUFKIN & JENRETTE
      SECURITIES CORPORATION
A.G. EDWARDS & SONS, INC.
PAINEWEBBER INCORPORATED
SALOMON BROTHERS INC
SMITH BARNEY INC.

By: MERRILL LYNCH, PIERCE, FENNER & SMITH
                 INCORPORATED


By: /s/ Anthony V. Leness
   ---------------------------
Authorized Signatory:



                                    -46-
<PAGE>   47

For themselves and as the U.S. Representatives of the several U.S. Underwriters 
named in Schedule A hereto.







                                    -47-
<PAGE>   48


                                 SCHEDULE A

<TABLE>
<CAPTION>
       Name of U.S. Underwriter                 Number of
       -----------------------                 Initial U.S.
                                               Securities
                                               ----------
<S>                                            <C>
Merrill Lynch, Pierce, Fenner & Smith
        Incorporated ........................    750,000

Donaldson, Lufkin & Jenrette                   
    Securities Corporation ..................    750,000

A.G. Edwards & Sons, Inc.....................    750,000

PaineWebber Incorporated ....................    750,000

Salomon Brothers Inc.........................    750,000

Smith Barney Inc.............................    750,000

Credit Suisse First Boston Corporation ......    320,000

Goldman, Sachs & Co..........................    320,000

Morgan Stanley & Co. Incorporated ...........    320,000

Robert W. Baird & Co. Incorporated ..........    164,000

First of Michigan Corporation ...............    164,000

Edward D. Jones & Co., L.P...................    164,000

Ladenburg Thalmann & Co. Inc.................    164,000

Roney & Co., LLC ............................    164,000

Advest, Inc..................................     80,000

Cowen & Company .............................     80,000

Dain Bosworth Incorporated ..................     80,000

Dominick & Dominick, Incorporated ...........     80,000

Interstate/Johnson Lane Corporation .........     80,000

Janney Montgomery Scott Inc. ................     80,000

Legg Mason Wood Walker, Incorporated ........     80,000

McDonald & Company Securities, Inc...........     80,000
</TABLE>



<PAGE>   49

<TABLE>
<S>                                            <C>
The Ohio Company ............................     80,000

                                               ---------
        Total................................  7,000,000
                                               =========
</TABLE>














                                    -49-
<PAGE>   50

                                                                       EXHIBIT A

                                7,000,000 SHARES

                             MCN ENERGY GROUP INC.

                            (A MICHIGAN CORPORATION)

                                  COMMON STOCK
                           (PAR VALUE $.01 PER SHARE)

                               PRICING AGREEMENT


                                                                   June 24, 1997


MERRILL LYNCH & CO.
MERRILL LYNCH, PIERCE, FENNER & SMITH
         INCORPORATED
DONALDSON, LUFKIN & JENRETTE
     SECURITIES CORPORATION
A.G. EDWARDS & SONS, INC.
PAINEWEBBER INCORPORATED
SALOMON BROTHERS INC
SMITH BARNEY INC.
     As the U.S. Representatives of the several U.S. Underwriters
     named in the within-mentioned U.S. Purchase Agreement
c/o   Merrill Lynch & Co.
      Merrill Lynch, Pierce, Fenner & Smith
                  Incorporated
North Tower
World Financial Center
New York, New York  10281-1209

Ladies and Gentlemen:

        Reference is made to the U.S. Purchase Agreement, dated June 24, 1997
(the "U.S. Purchase Agreement"), relating to the purchase by the several U.S.
Underwriters named in Schedule A thereto for whom Merrill Lynch & Co., Merrill
Lynch, Pierce, Fenner & Smith Incorporated, Donaldson, Lufkin & Jenrette
Securities Corporation, A.G. Edwards & Sons, Inc., PaineWebber Incorporated,
Salomon Brothers Inc and Smith Barney Inc. are acting as representatives (the
"U.S. Representatives"), of the shares of common stock, par value $.01 per
share, of MCN Energy Group Inc. (the "Company").  Capitalized terms used which
are not

<PAGE>   51


defined herein shall have the meanings assigned to such terms in the U.S. 
Purchase Agreement.

        Pursuant to Section 2 of the U.S. Purchase Agreement, the Company
agrees with each U.S. Underwriter as follows:

        1.  The initial public offering price per share for the Securities,
    determined as provided in said Section 2, shall be $29.125.

        2.  The purchase price per share for the U.S. Securities to be paid by
    the several U.S. Underwriters shall be $28.295, being an amount equal
    to the initial public offering price set forth above less $.83 per share;
    provided that the purchase price per share for any U.S. Option Securities
    purchased upon the exercise of the over-allotment option described in
    Section 2(b) of the U.S. Purchase Agreement shall be reduced by an amount
    per share equal to any dividends or distributions declared by the Company
    and payable on the Initial U.S. Securities but not payable on the U.S.
    Option Securities.


                                     -2-
<PAGE>   52

        If the foregoing is in accordance with your understanding of our
agreement, please sign and return to the Company a counterpart hereof,
whereupon this instrument, along with all counterparts, will become a binding
agreement between the U.S. Underwriters and the Company in accordance with its
terms.

                                        Very truly yours,


                                        MCN ENERGY GROUP INC.



                                        By:/s/ Sebastian Coppola             
                                           ----------------------------------
                                           Name: Sebastian Coppola           
                                           Title: Senior Vice President and  
                                                  Treasurer                  


CONFIRMED AND ACCEPTED,
as of the date first above written:

MERRILL LYNCH & CO.
MERRILL LYNCH, PIERCE, FENNER & SMITH
          INCORPORATED
DONALDSON, LUFKIN & JENRETTE
     SECURITIES CORPORATION
A.G. EDWARDS & SONS, INC.
PAINEWEBBER INCORPORATED
SALOMON BROTHERS INC
SMITH BARNEY INC.

By:  MERRILL LYNCH, PIERCE, FENNER & SMITH
                  INCORPORATED


By:/s/ Anthony V. Leness
   --------------------------------------
Authorized Signatory:

For themselves and as the U.S. Representatives of the
several U.S. Underwriters named in the U.S. Purchase Agreement.



                                     -3-

<PAGE>   1
                                                                     EXHIBIT 5.2




                             MCN ENERGY GROUP INC.

                            (A MICHIGAN CORPORATION)

                                1,500,000 SHARES

                                  COMMON STOCK
                           (PAR VALUE $.01 PER SHARE)


                        INTERNATIONAL PURCHASE AGREEMENT


                                                                   June 24, 1997


MERRILL LYNCH INTERNATIONAL
DONALDSON, LUFKIN & JENRETTE
      SECURITIES CORPORATION
A.G. EDWARDS & SONS, INC.
PAINEWEBBER INTERNATIONAL (U.K.) LTD.
SALOMON BROTHERS INTERNATIONAL LIMITED
SMITH BARNEY INC.
  As the Lead Managers of the several International
   Managers
  c/o Merrill Lynch International
      Ropemaker Place
      25 Ropemaker Street
      London EC2Y 9LY
      England

Ladies and Gentlemen:

         MCN Energy Group Inc., a Michigan corporation (the "Company") confirms
its agreement with Merrill Lynch International and each of the other
international underwriters named in Schedule A hereto (collectively, the
"International Managers", which term shall also include any underwriter
substituted as hereinafter provided in Section 10 hereof), for whom Merrill
Lynch International, Donaldson, Lufkin & Jenrette Securities Corporation, A.G.
Edwards & Sons, Inc., PaineWebber International (U.K.) Ltd., Salomon Brothers
International Limited
<PAGE>   2

and Smith Barney Inc. are acting as representatives (in such capacity,
collectively, the "Lead Managers"), with respect to the issue and sale by the
Company and the purchase by the International Managers, acting severally and
not jointly, of the respective numbers of shares of common stock, par value
$.01 per share, of the Company (the "Common Stock") set forth in said Schedule
A, and with respect to the grant by the Company to the International Managers,
acting severally and not jointly, of the option described in Section 2(b)
hereof to purchase all or any part of 225,000 additional shares of Common Stock
to cover over-allotments, if any.  The aforesaid 1,500,000 shares of Common
Stock (the "Initial International Securities") to be purchased by the
International Managers and all or any part of the 225,000 shares of Common
Stock subject to the option described in Section 2(b) hereof (the
"International Option Securities") are hereinafter called, collectively, the
"International Securities".

                 Prior to the purchase and public offering of the International
Securities by the several International Managers, the Company and the Lead
Managers, acting on behalf of the several International Managers, shall enter
into an agreement substantially in the form of Exhibit A hereto (the
"International Pricing Agreement").  The International Pricing Agreement may
take the form of an exchange of any standard form of written communication
between the Company and the Lead Managers and shall specify such applicable
information as is indicated in Exhibit A hereto.  The offering of the
International Securities will be governed by this Agreement, as supplemented by
the International Pricing Agreement.  From and after the date of the execution
and delivery of the International Pricing Agreement, this Agreement shall be
deemed to incorporate the International Pricing Agreement.

         It is understood that the Company is concurrently entering into an
agreement dated the date hereof (the "U.S. Purchase Agreement") providing for
the offering by the Company of an aggregate of 7,000,000 shares of Common Stock
(the "Initial U.S. Securities") through arrangements with certain underwriters
in the United States and Canada (the "U.S. Underwriters") for which Merrill
Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Donaldson,
Lufkin & Jenrette Securities Corporation, A.G. Edwards & Sons, Inc.,
PaineWebber Incorporated, Salomon Brothers Inc and Smith Barney Inc. are acting
as


                                     -2-
<PAGE>   3

representatives (the "U.S. Representatives") and the grant by the Company to
the U.S. Underwriters, acting severally and not jointly, of an option to
purchase all or any part of the 1,050,000 additional shares of Common Stock
solely to cover overallotments, if any (the "U.S. Option Securities" and,
together with the International Option Securities, the "Option Securities").
The Initial U.S. Securities and the U.S. Option Securities are hereinafter
called the "U.S. Securities".  It is understood that the Company is not
obligated to sell, and the International Managers are not obligated to
purchase, any Initial International Securities unless all of the Initial U.S.
Securities are contemporaneously purchased by the U.S. Underwriters.  Prior to
the purchase and public offering of the U.S. Securities by the several U.S.
Underwriters, the Company and the U.S. Representatives, acting on behalf of the
U.S. Underwriters, shall enter into an pricing agreement (the "U.S. Pricing
Agreement") specifying the applicable information as set forth in the U.S.
Purchase Agreement.  From and after the date of the execution and delivery of
the U.S. Pricing Agreement, the offering of the U.S. Securities will be
governed by the U.S. Purchase Agreement, as supplemented by the U.S. Pricing
Agreement.

         The International Managers and the U.S. Underwriters are hereinafter
collectively called the "Underwriters", the Initial International Securities
and the Initial U.S. Securities are hereinafter collectively called the
"Initial Securities", and the International Securities and the U.S. Securities
are hereinafter collectively called the "Securities".

         The Underwriters will concurrently enter into an Intersyndicate
Agreement of even date herewith (the "Intersyndicate Agreement") providing for
the coordination of certain transactions among the Underwriters under the
direction of Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith
Incorporated (in such capacity, the "Global Coordinator").

         The Company understands that the International Managers propose to
make a public offering of the International Securities as soon as the Lead
Managers deem advisable after this Agreement has been executed and delivered.





                                      -3-
<PAGE>   4

         The Company, and MCN Financing II, MCN Financing III and MCN Financing
IV (collectively, the "MCN Trusts") have filed with the Securities and Exchange
Commission (the "Commission") a registration statement on Form S-3 (No.
333-21175) and pre-effective amendment no. 1 thereto covering the registration
of securities of the Company and the MCN Trusts, including the Securities,
under the Securities Act of 1933, as amended (the "1933 Act"), including the
related preliminary prospectus or prospectuses, and the offering thereof from
time to time in accordance with Rule 415 of the rules and regulations of the
Commission under the 1933 Act (the "1933 Act Regulations") and the Company has
filed such post-effective amendments thereto as may be required prior to the
execution of the International Pricing Agreement.  Such registration statement,
as so amended, has been declared effective by the Commission.  Such
registration statement, as so amended, including the exhibits and schedules
thereto, if any, and the information, if any, deemed to be a part thereof
pursuant to Rule 430A(b) of the 1933 Act Regulations (the "Rule 430A
Information") or Rule 434(d) of the 1933 Act Regulations (the "Rule 434
Information"), is referred to herein as the "Registration Statement"; provided,
however, that all references to the "Registration Statement" shall be deemed to
include all documents incorporated therein by reference pursuant to the
Securities Exchange Act of 1934, as amended (the "1934 Act"), prior to the
execution of the applicable International Pricing Agreement; provided, further,
that if the Company files a registration statement with the Commission pursuant
to Section 462(b) of the 1933 Act Regulations (the "Rule 462(b) Registration
Statement"), then after such filing, all references to "Registration Statement"
shall be deemed to include the Rule 462(b) Registration Statement.  Two forms
of prospectus supplement are to be used in connection with the offering and
sale of the Securities: one relating to the International Securities (the "Form
of International Prospectus Supplement") and one relating to the U.S.
Securities (the "Form of U.S. Prospectus Supplement").  The form of
International Prospectus Supplement is identical to the Form of U.S. Prospectus
Supplement, except for the front cover, inside front cover and back cover pages
and the information under the caption "Underwriting."  The final Form of
International Prospectus Supplement and the final form of U.S. Prospectus
Supplement, including the documents incorporated by reference therein pursuant
to Item 12 of Form S-3 under the 1933 Act, and including





                                      -4-
<PAGE>   5

the prospectus constituting a part of the Registration Statement, in the forms
first furnished to the Underwriters for use in connection with the offering of
the Securities are herein called the "International Prospectus" and the "U.S.
Prospectus," respectively, and collectively, the "Prospectuses."  If the
Company elects to rely upon Rule 434 of the 1933 Act Regulations, the terms
"International Prospectus" and "U.S.  Prospectus" shall refer to the
preliminary International Prospectus dated June 3, 1997 and preliminary U.S.
Prospectus dated June 3, 1997, respectively, each together with the applicable
term sheet (a "Term Sheet") and all references in this Agreement to the date of
such Prospectuses shall mean the date of the applicable Term Sheet.  A
"preliminary prospectus" shall be deemed to refer to any prospectus used before
the registration statement became effective and any prospectus that omitted, as
applicable, the Rule 430A Information, the Rule 434 Information or other
information to be included upon pricing in a form of prospectus filed with the
Commission pursuant to Rule 424(b) of the 1933 Act Regulations, that was used
after such effectiveness and prior to the execution and delivery of the
International Pricing Agreement.  For purposes of this Agreement, all
references to the Registration Statement, any preliminary prospectus, the
Prospectus, the International Prospectus Supplement, the U.S. Prospectus
Supplement or any Term Sheet or any amendment or supplement to any of the
foregoing shall be deemed to include the electronically transmitted copy
thereof filed with the Commission pursuant to its Electronic Data Gathering,
Analysis and Retrieval system ("EDGAR").

         All references in this Agreement to financial statements and schedules
and other information which is "contained," "included" or "stated" in the
Registration Statement, any preliminary prospectus (including the Form of
International Prospectus Supplement and Form of U.S.  Prospectus Supplement) or
the Prospectuses (or other references of like import) shall be deemed to mean
and include all such financial statements and schedules and other information
which is incorporated by reference in the Registration Statement, any
preliminary prospectus (including the Form of International Prospectus
Supplement and Form of U.S. Prospectus Supplement) or the Prospectuses, as the
case may be; and all references in this Agreement to amendments or supplements
to the Registration Statement, any preliminary prospectus or the Prospectuses
shall be deemed to mean and include the filing of





                                      -5-
<PAGE>   6

any document under the 1934 Act which is incorporated by reference in the
Registration Statement, such preliminary prospectus or the Prospectuses, as the
case may be.


         SECTION 1.  Representations and Warranties.

         (a)  The Company represents and warrants to each International Manager
as of the date hereof, as of the date of the International Pricing Agreement
and as of the Closing Time referred to in Section 2(c) hereof, and, if
applicable, as of each Date of Delivery referred to in Section 2(b) hereof (in
each case, an "International Representation Date") as follows:

                 (i)  No stop order suspending the effectiveness of the
Registration Statement or any Rule 464(b) Registration Statement has been
issued under the 1933 Act and no proceeding for that purpose has been
instituted or are pending or, to the knowledge of the Company, are contemplated
by the Commission.

                 (ii)  The Company meets the requirements for the use of Form
S-3 under the 1933 Act.  Each of the Registration Statement and any Rule 462(b)
Registration Statement has become effective under the 1933 Act.  At the
respective times the Registration Statement, any Rule 462(b) Registration
Statement and any post-effective amendments thereto (including the filing of
the Company's most recent Annual Report on Form 10-K with the Commission)
became effective and at each International Representation Date, the
Registration Statement, any Rule 462 Registration Statement and any amendments
or supplements thereto complied and will comply in all material respects with
the requirements of the 1933 Act and the 1933 Act Regulations and did not and
will not contain an untrue statement of a material fact or omit to state a
material fact required to be stated therein or necessary to make the statements
therein not misleading.  Neither the Prospectuses nor any amendments or
supplements thereto, at the time that the Prospectuses or any such amendment or
supplement was issued and at the Closing Time (and, if any International Option
Securities are purchased, at the Date of Delivery), included or will include an
untrue statement of a material fact or omitted or will omit to state a material
fact necessary in order to make the statements therein, in the light of the
circumstances under which they were made, not misleading.





                                      -6-
<PAGE>   7

If the Company elects to rely upon Rule 434 of the 1933 Act Regulations, the
Company will comply with the requirements of Rule 434.  Notwithstanding the
foregoing, the representations and warranties in this subsection shall not
apply to statements in or omissions from the Registration Statement or the
International Prospectus made in reliance upon and in conformity with
information furnished to the Company in writing by any International Manager
through the Lead Managers expressly for use in the Registration Statement or
the International Prospectus.

                 Each preliminary prospectus and the prospectuses filed as part
of the Registration Statement as originally filed or as part of any amendment
thereto, or filed pursuant to Rule 424 under the 1933 Act, complied when so
filed in all material respects with the 1933 Act Regulations and each
preliminary prospectus and the Prospectuses delivered to the International
Managers for use in connection with the offering of the Securities will, at the
time of such delivery, be identical to the electronically transmitted copies
thereof filed with the Commission pursuant to EDGAR, except to the extent
permitted by Regulation S-T.

                 (iii)  The documents incorporated or deemed to be incorporated
by reference in the Registration Statement and the Prospectuses, at the time
they were or hereafter are filed with the Commission, complied and will comply
in all material respects with the requirements of the 1934 Act, and the rules
and regulations of Commission thereunder (the "1934 Act Regulations"), and,
when read together with the other information in the Prospectuses, at the time
the Registration Statement became effective, at the time the Prospectuses were
issued and at the Closing Time (and, if any International Option Securities are
purchased, at the Date of Delivery), did not and will not contain an untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein, in the light of the
circumstances under which they were or are made, not misleading.

                 (iv)  The accountants who certified the financial statements
and supporting schedules included or incorporated by reference in the
Registration Statement and the Prospectuses are independent public accountants
as required by the 1933 Act and the 1933 Act Regulations.





                                      -7-
<PAGE>   8


                 (v)  The financial statements of the Company included or
incorporated by reference in the Registration Statement and the Prospectuses,
together with the related schedules and notes, present fairly the financial
position of the Company and its consolidated subsidiaries as at the dates
indicated and the statements of operations, stockholders' equity and cash flows
of the Company and its consolidated subsidiaries for the periods specified.
Such financial statements have been prepared in conformity with generally
accepted accounting principles ("GAAP") applied on a consistent basis
throughout the periods involved.  The supporting schedules, if any, included or
incorporated by reference in the Registration Statement and the Prospectuses
present fairly in accordance with GAAP the information required to be stated
therein.  The ratio of earnings to fixed charges included in the Prospectuses
has been calculated in compliance with Item 503(d) of Regulation S-K of the
Commission.  The selected financial information and the summary financial data
included in the Prospectuses present fairly the information shown therein and
have been compiled on a basis consistent with that of the audited financial
statements included in the Registration Statement.

                 (vi)  Since the respective dates as of which information is
given in the Registration Statement and the Prospectuses, and except as
otherwise stated therein, (A) there has been no material adverse change and no
development which could reasonably be expected to result in a material adverse
change in the condition, financial or otherwise, or in the earnings, business
affairs or business prospects of the Company and its subsidiaries, considered
as one enterprise (a "Material Adverse Effect"), whether or not arising in the
ordinary course of business, (B) there have been no transactions entered into
by the Company or any of its subsidiaries, other than those arising in the
ordinary course of business, which are material with respect to the Company and
its subsidiaries, considered as one enterprise, (C) except for regular
dividends on the Common Stock in amounts per share that are consistent with
past practice or the applicable charter document or supplement thereto,
respectively, there has been no dividend or distribution of any kind declared,
paid or made by the Company on any class of its capital stock.





                                      -8-
<PAGE>   9

                 (vii)  The Company has been duly incorporated and is validly
existing as a corporation in good standing under the laws of the State of
Michigan, with corporate power and authority to own, lease and operate its
properties and to conduct its business as presently conducted and as described
in the Prospectuses and to enter into and perform its obligations under, or as
contemplated under, this Agreement, the International Pricing Agreement, the
U.S. Purchase Agreement and the U.S. Pricing Agreement.  The Company is duly
qualified as a foreign corporation to transact business and is in good standing
in each jurisdiction in which such qualification is required, whether by reason
of the ownership or leasing of property or the conduct of business, except
where the failure to so qualify or be in good standing would not have a
Material Adverse Effect.

                 (viii)  Each subsidiary of the Company has been duly
incorporated and is validly existing as a corporation in good standing under
the laws of the jurisdiction of its incorporation, has the corporate power and
authority to own, lease and operate its properties and to conduct its business
as presently conducted and as described in the Prospectuses, and is duly
qualified as a foreign corporation to transact business and is in good standing
in each jurisdiction in which such qualification is required, whether by reason
of the ownership or leasing of property or the conduct of business, except
where the failure to so qualify or be in good standing would not have a
Material Adverse Effect.  Except as otherwise stated in the Registration
Statement and the Prospectuses, all of the issued and outstanding shares of
capital stock of each subsidiary of the Company have been duly authorized and
validly issued, is fully paid and non-assessable and all such shares are owned
by the Company, directly or through its subsidiaries, free and clear of any
security interest, mortgage, pledge, lien, encumbrance, claim or equity.  None
of the outstanding shares of capital stock of the subsidiaries was issued in
violation of preemptive or other similar rights arising by operation of law,
under the charter or by-laws of any subsidiary or under any agreement to which
the Company or any subsidiary is a party, or otherwise.

                 (ix)  The Company has authorized, issued and outstanding
capital as set forth in the Prospectuses; since the date indicated in the
Prospectuses there has been no change in the consolidated capitalization of the
Company and its





                                      -9-
<PAGE>   10

subsidiaries (other than changes in outstanding Common Stock resulting from
employee benefit plan or dividend reinvestment and stock purchase plan
transactions).  The shares of issued and outstanding capital stock of the
Company have been duly authorized and validly issued and are fully paid and
non-assessable; none of the outstanding shares of capital stock of the Company
was issued in violation of the preemptive or other similar rights arising by
operation of law, under the charter or by-laws of the Company, under any
agreement to which the Company or any of its subsidiaries is a party or
otherwise.

                 (x)  This Agreement, the International Pricing Agreement, the
U.S. Purchase Agreement and the U.S. Pricing Agreement have been duly
authorized, executed and delivered by the Company.

                 (xi)  The Securities and the preferred share purchase rights
(the "Rights") to be issued with the Securities have been duly authorized for
issuance and sale to the International Managers pursuant to this Agreement and
the U.S. Underwriters pursuant to the U.S.  Purchase Agreement, respectively,
and, when issued and delivered by the Company against payment of the
consideration as provided in the International Pricing Agreement and the U.S.
Pricing Agreement, respectively, will be validly issued, fully paid and
non-assessable; the Common Stock and the Rights conform to all statements
relating thereto contained in the Prospectuses and such description conforms to
the rights set forth in the instruments defining the same; no holder of the
Securities will be subject to personal liability by reason of being such a
holder; and the issuance of the Securities is not subject to preemptive or
other similar rights arising by operation of law, under the charter or by- laws
of the Company, under any agreement to which the Company or any of its
subsidiaries is a party or otherwise.

                 (xii)  Neither the Company nor any of its subsidiaries is in
violation of its charter or by-laws or in default in the performance or
observance of any material obligation, agreement, covenant or condition
contained in any contract, indenture, mortgage, deed of trust, note, lease,
loan or credit agreement or any other agreement or instrument to which the
Company or any of its subsidiaries is a party or by which any of them may be
bound, or to which any of the property or assets of the Company or any





                                      -10-
<PAGE>   11

of its subsidiaries is subject, or in violation of any applicable law, rule or
regulation or any judgment, order, writ or decree of any government,
governmental instrumentality or court, domestic or foreign, having jurisdiction
over the Company or any of its subsidiaries or any of their respective
properties or assets, which violation or default would, singly or in the
aggregate, have a Material Adverse Effect.

                 (xiii)  The execution, delivery and performance of this
Agreement, the International Pricing Agreement, the U.S. Purchase Agreement and
the U.S. Pricing Agreement and the consummation of the transactions
contemplated herein and therein and in the Registration Statement (including
the issuance and sale of the Securities and the use of the proceeds from the
sale of the Securities as described in the Prospectuses under the caption "Use
of Proceeds") and compliance by the Company with its obligations hereunder and
thereunder have been duly authorized by all necessary corporate action and do
not and will not, whether with or without the giving of notice or passage of
time or both, conflict with or constitute a breach of, or default under, or
result in the creation or imposition of any lien, charge or encumbrance upon
any property or assets of the Company or any of its subsidiaries pursuant to
any contract, indenture, mortgage, deed of trust, loan or credit agreement,
note, lease or other agreement or instrument to which the Company or any of its
subsidiaries is a party or by which any of them may be bound, or to which any
property or assets of the Company or any subsidiary thereof is subject, nor
will such action result in any violation of the provisions of the charter of
by-laws of the Company or any of its subsidiaries or any applicable law,
statute, rule or regulation, judgment, order, writ or decree of any government,
governmental instrumentality or court, domestic or foreign, having jurisdiction
over the Company or any of its subsidiaries or any of their respective
property, assets or operations.

                 (xiv)  No labor dispute with the employees of the Company or
any of its subsidiaries exists or, to the knowledge of the Company, is
imminent, and the Company is not aware of any existing or imminent labor
disturbance by the employees of any of its or any of its subsidiary's principal
suppliers, manufacturers, customers or contractors which, in either case, may
reasonably be expected to result in a Material Adverse Effect.





                                      -11-
<PAGE>   12


                 (xv)  There is no action, suit, proceeding, inquiry or
investigation before or by any court or governmental agency or body, domestic
or foreign, now pending, or, to the knowledge of the Company, threatened
against or affecting the Company or any of its subsidiaries which is required
to be disclosed in the Registration Statement and the Prospectuses (other than
as stated therein), or which might reasonably be expected to result in a
Material Adverse Effect, or which might be reasonably expected to materially
and adversely affect the assets, properties or operations thereof or the
consummation of the transactions contemplated by this Agreement, the
International Pricing Agreement, the U.S. Purchase Agreement and the U.S.
Pricing Agreement or the performance by the Company of its obligations
hereunder and thereunder; the aggregate of all pending legal or governmental
proceedings to which the Company or any subsidiary thereof is a party or of
which any of their respective properties or operations is the subject which are
not described in the Registration Statement and the Prospectuses, including
ordinary routine litigation incidental to the business, could not reasonably be
expected to result in a Material Adverse Effect.

                 (xvi)  There are no contracts or documents which are required
to be described in the Registration Statement, the Prospectuses or the
documents incorporated by reference therein or to be filed as exhibits thereto
which have not been so described and/or filed as required.

                 (xvii)  No filing with, or authorization, approval, consent,
license, order, registration, qualification or decree of, any court or
governmental authority or agency is necessary or required for the performance
by the Company of its obligations hereunder, in connection with the offering,
issuance or sale of the Securities under this Agreement, the International
Pricing Agreement, the U.S. Purchase Agreement and the U.S. Pricing Agreement
or the consummation of the transactions contemplated by this Agreement, the
International Pricing Agreement, the U.S. Purchase Agreement and the U.S.
Pricing Agreement, except such as have been already obtained or as may be
required under the 1933 Act or the 1933 Act Regulations or foreign or state
securities or blue sky laws.

                 (xviii)  The Company and its subsidiaries have good and
marketable title to all real property owned by them and good





                                      -12-
<PAGE>   13

title to all other properties owned by them, in each case, free and clear of
all mortgages, pledges, liens, security interests, claims, restrictions or
encumbrances of any kind except such as (a) are described in the Registration
Statement and the Prospectuses or (b) do not, singly or in the aggregate,
materially affect the value of such property and do not interfere with the use
made and proposed to be made of such property by the Company or any of its
subsidiaries; and all of the leases and subleases material to the business of
the Company and its subsidiaries, considered as one enterprise, and under which
the Company or any of its subsidiaries holds properties are in full force and
effect, and neither the Company nor any of its subsidiaries has any notice of
any material claim of any sort that has been asserted by anyone adverse to the
rights of the Company or any of its subsidiaries under any of the leases or
subleases mentioned above, or affecting or questioning the rights of the
Company or such subsidiary to the continued possession of the leased or
subleased premises under any such lease or sublease; the pipeline, distribution
main and underground gas storage easements enjoyed by the Company or its
subsidiaries are valid, subsisting and enforceable easements with such
exceptions as are not material and do not materially interfere with the conduct
of the business of the Company and its subsidiaries.

                 (xix)  The Company and its subsidiaries possess all licenses,
franchises, permits, certificates, approvals, consents, orders and other
authorizations (collectively, the "Governmental Licenses") issued by the
appropriate federal, state, local or foreign regulatory agencies or bodies
necessary for the ownership or lease of the material properties owned or leased
by each of them and to conduct the business now operated by each of them; the
Company and its subsidiaries are in compliance with the terms and conditions of
all such Governmental Licenses, except where the failure to so comply would
not, singly or in the aggregate, have a Material Adverse Effect; all of the
Governmental Licenses are valid and in full force and effect, except when the
invalidity of such Governmental Licenses or the failure of such Governmental
Licenses to be in full force and effect would not have a Material Adverse
Effect; and neither the Company nor any of its subsidiaries has received any
notice of proceedings relating to the revocation or modification of any such
Governmental Licenses which, singly or in the aggregate, if the





                                      -13-
<PAGE>   14

subject of an unfavorable decision, ruling or finding, would result in a
Material Adverse Effect.

                 (xx)  The Company is not, and upon the issuance and sale of
the Securities as herein contemplated and the application of the net proceeds
therefrom as described in the Prospectuses will not be, an "investment company"
or an entity under the "control" of an "investment company" as such terms are
defined under the Investment Company Act of 1940, as amended (the "1940 Act").

                 (xxi)  The Company is presently exempt from the provisions of
the Public Utility Holding Company Act of 1935 (except Section 9 thereof) which
would otherwise require it to register thereunder.

                 (xxii) The Company has complied with, and is and will be in
compliance with, the provisions of that certain Florida act relating to
disclosure of doing business with Cuba, codified as Section 517.075 of the
Florida statutes, and the rules and regulations thereunder (collectively, the
"Cuba Act") or is exempt therefrom.

                 (xxiii)  None of the Company, its subsidiaries or any of their
respective directors, officers or controlling persons, has taken, directly or
indirectly, any action resulting in a violation of Regulation M under the 1934
Act, or designed to cause or result in, or that has constituted or that
reasonably might be expected to constitute, the stabilization or manipulation
of the price of any security of the Company to facilitate the sale or resale of
the Securities or the Common Stock.

                 (xxiv)  No "forward looking statement" (as defined in Rule 175
under the 1933 Act) contained in the Registration Statement, any preliminary
prospectus or the Prospectuses was made or reaffirmed without a reasonable
basis or was disclosed other than in good faith.

                 (b)  Any certificate signed by any officer of the Company or
any subsidiary and delivered to the International Managers or to counsel for
the International Managers in connection with the offering of the Securities
shall be deemed a





                                      -14-
<PAGE>   15

representation and warranty by the Company to each International Manager as to
the matters covered thereby.

         SECTION 2.  Sale and Delivery to the International Managers; Closing.

         (a)     On the basis of the representations and warranties herein
contained and subject to the terms and conditions herein set forth, the Company
agrees to sell to each International Manager, and each International Manager,
severally and not jointly, agrees to purchase from the Company, at the price
per security set forth in the International Pricing Agreement, the number of
Initial International Securities set forth in Schedule A hereto opposite the
name of such International Manager, plus any additional number of Initial
International Securities which such International Manager may become obligated
to purchase pursuant to the provisions of Section 10 hereof.

         (b)     In addition, on the basis of the representations and
warranties herein contained and subject to the terms and conditions herein set
forth, the Company hereby grants an option to the International Managers,
severally and not jointly, to purchase at their election up to an additional
225,000 shares of Common Stock at the price per share set forth in the
International Pricing Agreement, less an amount per share equal to any
dividends or distributions declared by the Company and payable on the Initial
International Securities but not payable on the International Option
Securities.  The option hereby granted will expire automatically at the close
of business on the 30th calendar day after the date of the International
Pricing Agreement and may be exercised in whole or in part from time to time
only for the purpose of covering over-allotments which may be made in
connection with the offering and distribution of the Initial International
Securities upon notice by the Global Coordinator to the Company setting forth
the number of International Option Securities as to which the several
International Managers are then exercising the option and the time and date of
payment and delivery for such International Option Securities.  Any such time
and date of delivery (a "Date of Delivery") shall be determined by the Global
Coordinator but shall not be later than seven full business days after the
exercise of said option, nor in any event prior to the Closing Time, unless
otherwise agreed upon by the Global Coordinator and





                                      -15-
<PAGE>   16

the Company.  If the option is exercised as to all or any portion of the
International Option Securities, each of the International Managers, acting
severally and not jointly, will purchase that proportion of the total number of
International Option Securities then being purchased which the number of
Initial International Securities set forth in Schedule A opposite the name of
such International Manager bears to the total number of Initial International
Securities, subject in each case to such adjustments as the Lead Managers in
their discretion shall make to eliminate any sales or purchases of fractional
shares.

         (c)     Payment of the purchase price for, and delivery of
certificates for, the Initial Securities shall be made at the offices of
LeBoeuf, Lamb, Greene & MacRae, L.L.P., 125 West 55th Street, New York, New
York  10019, or at such other place as shall be agreed upon by the Global
Coordinator and the Company, at 9:00 a.m. (Eastern time) on the third (fourth,
if pricing of the Securities occurs after 4:30 p.m.  (Eastern time) on any
given day) business day after the date of execution of the International
Pricing Agreement (unless postponed in accordance with the provisions of
Section 10), or such other time not later than ten business days after such
date as shall be agreed upon by the Global Coordinator and the Company (such
time and date of payment and delivery being referred to herein as the "Closing
Time").

                 In addition, in the event that any or all of the International
Option Securities are purchased by the International Managers, payment of the
purchase price for, and delivery of certificates for, such International Option
Securities shall be made at the above-mentioned offices, or at such other place
as shall be agreed upon by the Lead Managers  and the Company, on each Date of
Delivery as specified in the notice from the Global Coordinator to the Company.

                 Payment shall be made to the Company by wire transfer of
immediately available funds to a bank account designated by the Company,
against delivery to the Lead Managers for the respective accounts of the
International Managers of certificates for the International Securities to be
purchased by them.  It is understood that each International Manager has
authorized the Lead Managers, for its account, to accept delivery of, receipt
for, and make payment of the purchase price for, the Initial





                                      -16-
<PAGE>   17

International Securities and the International Option Securities, if any, which
it has agreed to purchase.  Merrill Lynch International, individually and not
as representative of the International Managers, may (but shall not be
obligated to) make payment of the purchase price for the Initial International
Securities or the International Option Securities, if any, to be purchased by
any International Manager whose funds have not been received by the Closing
Time of the relevant of Date of Delivery, as the case may be, but such payment
shall not relieve such International Manager from its obligations hereunder.

         (d)     Certificates for the Initial International Securities and the
International Option Securities, if any, shall be in such denominations and
registered in such names as the Lead Managers may request in writing at least
one full business day before the Closing Time or the relevant Date of Delivery,
as the case may be.  The certificates for the Initial International Securities
and the International Option Securities, if any, will be made available for
examination and packaging by the Lead Managers no later than 10:00 a.m.
(Eastern time) on the business day prior to the Closing Time or the relevant
Date of Delivery, as the case may be.

         (e)     If settlement for the International Option Securities occurs
after the Closing Time, the Company will deliver to the International Managers
on the relevant Date of Delivery, and the obligations of the International
Managers to purchase the International Option Securities shall be conditioned
upon the receipt of, supplemental opinions, certificates and letters confirming
as of such date the opinions, certificates and letters delivered at the Closing
Time pursuant to Section 5(i) hereof.

         SECTION 3.  Covenants of the Company.  The Company covenants with each
International Manager as follows:

         (a)  Promptly following the execution of this Agreement, the Company
will cause the Prospectuses, including as a part thereof a prospectus
supplement relating to the Securities, to be filed with the Commission pursuant
to Rule 424(b) of the 1933 Act Regulations and will take steps as it deems
necessary to ascertain promptly whether the form of prospectus transmitted for
filing under Rule 424(b) was received for filing by the





                                      -17-
<PAGE>   18

Commission and, in the event that it was not, it will promptly file such
prospectus.

         (b)  The Company, subject to Section 3(b), will comply with the
requirements of Rule 430A or Rule 434 of the 1933 Act Regulations, as
applicable, and will notify the Lead Managers immediately, and confirm the
notice in writing, (i) of the effectiveness of any post-effective amendment to
the Registration Statement or the filing of any supplement or amendment to the
Prospectuses, (ii) of the receipt of any comments from the Commission, (iii) of
any request by the Commission for any amendment to the Registration Statement
or any amendment or supplement to the Prospectuses or for additional
information and (iv) of the issuance by the Commission of any stop order
suspending the effectiveness of the Registration Statement or of any order
preventing or suspending the use of any preliminary prospectus or Prospectuses,
or of the suspension of the qualification of the Securities for offering or
sale in any jurisdiction, or of the initiation or threatening of any
proceedings for any of such purposes.  The Company will make every reasonable
effort to prevent the issuance of any stop order and, if any stop order is
issued, to obtain the lifting thereof at the earliest possible moment.

         (c)  The Company will give the Lead Managers notice of its intention
to file or prepare any amendment to the Registration Statement (including any
post-effective amendment and any filing under Rule 462(b) of the 1933 Act
Regulations), any Term Sheet or any amendment, supplement or revision to either
the prospectus included in the Registration Statement at the time it became
effective or to the Prospectuses, whether pursuant to the 1933 Act, the 1934
Act or otherwise; will furnish the Lead Managers with copies of any such Rule
462(b) Registration Statement, Term Sheet, amendment, supplement or revision a
reasonable amount of time prior to such proposed filing or use, as the case may
be; and will not file any such Rule 462(b) Registration Statement, Term Sheet,
amendment, supplement or revision to which the Lead Managers or counsel for the
International Managers shall object.

         (d)  The Company has furnished or will deliver to the Lead Managers
and counsel for the International Managers, without charge, signed copies of
the Registration Statement as originally filed and of each amendment thereto
(including exhibits filed





                                      -18-
<PAGE>   19

therewith or incorporated by reference therein and documents incorporated or
deemed to be incorporated by reference therein) and signed copies of all
consents and certificates of experts, and will also deliver to the Lead
Managers, without charge, a conformed copy of the Registration Statement as
originally filed and of each amendment thereto (without exhibits) for each of
the International Managers.  The copies of the Registration Statement and each
amendment thereto furnished to the  will be identical to the electronically
transmitted copies thereof filed with the Commission pursuant to EDGAR, except
to the extent permitted by Regulation S-T.

         (e)  The Company will deliver to each International Manager, without
charge, as many copies of each preliminary prospectus as such International
Manager may reasonably request, and the Company hereby consents to the use of
such copies for purposes permitted by the 1933 Act.  The Company will furnish
to each International Manager, without charge, during the period when the
International Prospectus is required to be delivered under the 1933 Act or the
1934 Act, such number of copies of the International Prospectus (as amended or
supplemented) as such International Manager may reasonably request.  The
International Prospectus and any amendments or supplements thereto furnished to
the International Managers will be identical to the electronically transmitted
copies thereof filed with the Commission pursuant to EDGAR, except to the
extent permitted by Regulation S-T.

         (f)  The Company will comply with the 1933 Act and the 1933 Act
Regulations and the 1934 Act and the 1934 Act Regulations so as to permit the
completion of the distribution of the Securities as contemplated in this
Agreement, the U.S. Purchase Agreement and in the Prospectuses.  If at any time
when a prospectus is required by the 1933 Act or the 1934 Act to be delivered
in connection with sales of the Securities, any event shall occur or condition
shall exist as a result of which it is necessary, in the opinion of counsel for
the International Managers or for the Company, to amend the Registration
Statement or amend or supplement any Prospectus in order that the Prospectuses
will not include an untrue statement of a material fact or omit to state a
material fact necessary in order to make the statements therein not misleading
in the light of the circumstances existing at the time it is delivered to a
purchaser, or if it shall be necessary,





                                      -19-
<PAGE>   20

in the opinion of such counsel, at any time to amend the Registration Statement
or amend or supplement any Prospectus in order to comply with the requirements
of the 1933 Act or the 1933 Act Regulations, the Company will promptly prepare
and file with the Commission, subject to Section 3(c), such amendment or
supplement as may be necessary to correct such statement or omission or to make
the Registration Statement or the Prospectuses comply with such requirements,
and the Company will furnish to the International Managers, without charge,
such number of copies of such amendment or supplement as the International
Managers may reasonably request.

         (g)  The Company will use its best efforts, in cooperation with the
International Managers, to qualify the Securities for offering and sale under
the applicable securities laws of such states and other jurisdictions (domestic
or foreign) as the Lead Managers may designate; provided, however, that the
Company shall not be obligated to file any general consent to service of
process or to qualify as a foreign corporation or as a dealer in securities in
any jurisdiction in which it is not so qualified or to subject itself to
taxation in respect of doing business in any jurisdiction in which it is not
otherwise so subject.  In each jurisdiction in which the Securities have been
so qualified, the Company will file such statements and reports as may be
required by the laws of such jurisdiction to continue such qualification in
effect for so long as may be required in connection with distribution of the
Securities.

         (h)  The Company will timely file such reports pursuant to the 1934
Act as are necessary in order to make generally available to its
securityholders as soon as practicable an earnings statement for the purposes
of, and to provide the benefits contemplated by, the last paragraph of Section
11(a) of the 1933 Act.

         (i)  The Company will use the net proceeds received by it from the
sale of the Securities in the manner specified in the Prospectuses under "Use
of Proceeds".

         (j)  If, at the time that the Registration Statement became (or in the
case of a post-effective amendment becomes) effective, any information shall
have been omitted therefrom in reliance upon Rule 430A or Rule 434 of the 1933
Act Regulations, then





                                      -20-
<PAGE>   21

immediately following the execution of the International Pricing Agreement, the
Company will prepare, and file or transmit for filing with the Commission in
accordance with such Rule 430A or Rule 434 and Rule 424(b) of the 1933 Act
Regulations, copies of an amended Prospectus, or Term Sheet, or, if required by
such Rule 430A, a post-effective amendment to the Registration Statement
(including an amended Prospectus), containing all information so omitted.

         (k)  If the Company elects to rely upon Rule 462(b), the Company shall
file a Rule 462(b) Registration Statement with the Commission in compliance
with Rule 462(b) and pay the applicable fees in accordance with Rule 111 of the
1933 Act Regulations by the earlier of (i) 10:00 p.m. Eastern time on the date
of the International Pricing Agreement and (ii) the time confirmations are sent
or given, as specified by Rule 462(b)(2).

         (l)  The Company, during the period when the Prospectuses are required
to be delivered under the 1933 Act or the 1934 Act, will file all documents
required to be filed with the Commission pursuant to the 1934 Act within the
time periods required by the 1934 Act and the 1934 Act Regulations.

         (m)  The Company will use its best efforts to effect the listing of
the Securities on the New York Stock Exchange.

         (n)  During a period of 90 days from the date of the Prospectuses, the
Company will not, without the prior written consent of Merrill Lynch
International, directly or indirectly, issue, pledge, sell, offer to sell,
grant any option for the sale of or otherwise transfer or dispose of, any share
of Common Stock or any securities convertible into or exchangeable or
exercisable for Common Stock, except for (a) the Securities to be sold
hereunder or under the U.S. Purchase Agreement, (b) any shares of Common Stock
issued or options to purchase Common Stock granted pursuant to existing
employee benefit plans of the Company and its subsidiaries and (c) any shares
of Common Stock issued pursuant to dividend reinvestment and stock purchase
plans of the Company.

         (o)  During a period of three years from the Closing Time, to make
generally available to the International Managers copies of all reports and
other communications (financial or other)





                                      -21-
<PAGE>   22

mailed to stockholders, and to deliver to the International Managers promptly
after they are available, copies of any reports and financial statements
furnished to or filed with the Commission or any national securities exchange
on which any class of securities of the Company is listed; and shall furnish
such additional information concerning the business and financial condition of
the Company as the International Managers may from time to time reasonably
request (such financial statements to be on a consolidated basis to the extent
the accounts of the Company and its subsidiaries are consolidated in reports
furnished to its stockholders generally or to the Commission).

         (q)     None of the Company, its subsidiaries or any of their
respective directors, officers or controlling persons, will take, directly or
indirectly, any action resulting in a violation of Regulation M under the 1934
Act, or designed to cause or result in, or that reasonably might be expected to
constitute, the stabilization or manipulation of the price of any security of
the Company to facilitate the sale or resale of the Securities.

         SECTION 4.  Payment of Expenses.  The Company will pay all expenses
incident to the performance of its obligations under this Agreement and
the International Pricing Agreement, including, without limitation, expenses
related to the following, if incurred: (i) the preparation, delivery, printing
and filing of the Registration Statement (including financial statements and
exhibits) as originally filed and of each amendment thereto; (ii) the printing
and delivery to the Underwriters of this Agreement, the International Pricing
Agreement, any Agreement among Underwriters, any Intersyndicate Agreement and
such other documents as may be required in connection with the offering,
purchase, sale and delivery of the Securities; (iii) the preparation, issuance
and delivery of the certificates for the Securities to the Underwriters,
including any stock or other transfer taxes or any stamp or other duties
payable upon the sale of the Securities to the Underwriters and the transfer of
the Securities between the International Managers and the U.S. Underwriters;
(iv) the fees and disbursements of the Company's counsel, accountants and other
advisors or agents; (v) the qualification of the Securities under securities
laws in accordance with the provisions of Section 3(g), including filing fees
and the fees and disbursements of counsel for the International Managers in
connection therewith and in connection





                                      -22-
<PAGE>   23

with the preparation of the Blue Sky Survey and any supplement thereto; (vi)
the printing and delivery to the Underwriters of copies of each preliminary
prospectus, any Term Sheet and of the Prospectuses and any amendments or
supplements thereto; (vii) the preparation, printing and delivery to the
Underwriters of copies of the Blue Sky Survey and any supplement thereto;
(viii) the fees and expenses of any transfer agent or registrar for the
Securities, (ix) any fees payable to the Commission; and (x) the fees and
expenses incurred in connection with the listing of the Securities on the New
York Stock Exchange.

                 If this Agreement is terminated by the Lead Managers in
accordance with the provisions of Section 5 or Section 9(a)(i) hereof, the
Company shall reimburse the International Managers for all of their
out-of-pocket expenses, including the reasonable fees and disbursements of
LeBoeuf, Lamb, Greene & MacRae, L.L.P., counsel for the International Managers.

         SECTION 5.  Conditions of International Managers' Obligations.  The
obligations of the several International Managers hereunder are subject to
the accuracy of the representations and warranties of the Company herein
contained or in certificates of any officer of the Company or any subsidiary of
the Company delivered pursuant to the provisions hereof, to the performance by
the Company of its covenants and other obligations hereunder, and to the
following further conditions:

         (a)  The Registration Statement, including any Rule 462(b)
Registration Statement, has become effective under the 1933 Act  and on the
date hereof and at the Closing Time and any Date of Delivery, no stop order
suspending the effectiveness of the Registration Statement shall have been
issued under the 1933 Act or proceedings therefor initiated or threatened by
the Commission, and any request on the part of the Commission for additional
information shall have been complied with to the satisfaction of counsel to the
International Managers.  A prospectus containing information relating to the
description of the Securities, the specific method of distribution and similar
matters shall have been filed with the Commission in accordance with Rule
424(b) (or any required post-effective amendment providing such information
shall have been filed and declared effective in accordance with the
requirements of Rule 430A), or, if the Company has elected to rely upon Rule
434 of the 1933 Act





                                      -23-
<PAGE>   24

Regulations, a Term Sheet including the Rule 434 Information shall have been
filed with the Commission in accordance with Rule 424(b).

         (b)  At the Closing Time the Lead Managers shall have received:

                 (1)  The favorable opinion, dated as of the Closing Time, of
Daniel L. Schiffer, Esq., Senior Vice President, General Counsel and Secretary
of the Company, in form and substance satisfactory to counsel for the Lead
Managers, together with signed or reproduced copies of such letter for each of
the other International Managers, to the effect that:

                               (i)   The Company has been duly incorporated and
         is validly existing as a corporation in good standing under the laws
         of the State of Michigan.

                              (ii)   The Company has corporate power and
         authority to own, lease and operate its properties and to conduct its
         business as described in the Prospectuses and to enter into and
         perform its obligations under this Agreement, the International
         Pricing Agreement, the U.S. Purchase Agreement and the U.S. Pricing
         Agreement.

                             (iii)   The Company is duly qualified as a foreign
         corporation to transact business and is in good standing in each
         jurisdiction in which such qualification is required, whether by
         reason of the ownership or leasing of property or the conduct of
         business, except where the failure so to qualify or to be in good
         standing would not result in a Material Adverse Effect.

                              (iv)   The authorized, issued and outstanding
         capital stock of the Company is as set forth in the Prospectuses
         (except for subsequent issuances, if any, pursuant to the
         International Purchase Agreement and the U.S. Purchase Agreement or
         pursuant to employee benefit plan or dividend reinvestment and stock
         purchase plan transactions); the shares issued and outstanding capital
         stock of the Company have been duly authorized and validly issued and
         are fully paid and non-assessable; and none of the outstanding shares
         of capital stock were issued in





                                      -24-
<PAGE>   25

         violation of preemptive or other similar rights of any securityholder
         of the Company.

                               (v)   The Securities to be purchased by the
         International Managers and the U.S. Underwriters have been duly
         authorized for issuance and sale to the Underwriters pursuant to this
         Agreement and the U.S. Purchase Agreement, respectively, and, when
         issued and delivered by the Company pursuant to this Agreement and the
         U.S. Purchase Agreement, respectively, against payment of the
         consideration set forth in the International Pricing Agreement and the
         U.S. Pricing Agreement, will be validly issued and fully paid and
         non-assessable.  The form of certificate used to evidence the
         Securities is in due and proper form and complies with the applicable
         statutory requirements, with any applicable requirements of the
         charter or by-laws of the Company, and with the requirements of the
         New York Stock Exchange.

                              (vi)   The issuance of the Securities is not
         subject to preemptive or other similar rights arising by law or, to
         the best of such counsel's knowledge, otherwise.

                             (vii)   The Rights to be issued with the
         Securities have been duly authorized and, upon the issuance of the
         Securities, will be validly issued and conform in all material
         respects to the description thereof in the Prospectuses.

                            (viii)   Each subsidiary of the Company has been
         duly incorporated and is validly existing as a corporation in good
         standing under the laws of the jurisdiction of its incorporation, has
         the corporate power and authority to own, lease and operate its
         properties and to conduct its business as presently conducted and as
         described in the Prospectuses, and is duly qualified as a foreign
         corporation to transact business and is in good standing in each
         jurisdiction in which such qualification is required, whether by
         reason of the ownership or leasing of property or the conduct of
         business, except where the failure to so qualify or be in good
         standing would not have a Material Adverse Effect.  Except as
         otherwise disclosed in the Registration Statement and the
         Prospectuses, all of the issued and outstanding capital stock of each
         such subsidiary of the Company has





                                      -25-
<PAGE>   26

         been duly authorized and validly issued, is fully paid and
         non-assessable and all such shares are owned by the Company, directly
         or through its subsidiaries, free and clear of any security interest,
         mortgage, pledge, lien, encumbrance, claim or equity.  None of the
         outstanding shares of capital stock of any subsidiary of the Company
         was issued in violation of preemptive or other similar rights of any
         securityholder of such subsidiary.

                              (ix)   This Agreement, the International Pricing
         Agreement, the U.S. Purchase Agreement and the U.S. Pricing Agreement
         have been duly authorized, executed and delivered by the Company.

                               (x)   The Registration Statement, including any
         Rule 462(b) Registration Statement, has been declared effective under
         the 1933 Act; any required filing of the prospectuses pursuant to Rule
         424(b) has been made in the manner and within the time period required
         by Rule 424(b); and, to the best knowledge of such counsel, no stop
         order suspending the effectiveness of the Registration Statement or
         any Rule 462(b) Registration Statement has been issued under the 1933
         Act and no proceedings therefor have been initiated or threatened by
         the Commission.

                              (xi)   The Registration Statement, including any
         Rule 462(b) Registration Statement, the Rule 430A Information and the
         Rule 434 Information, as applicable, the Prospectuses, excluding the
         documents incorporated by reference therein, and each amendment or
         supplement to the Registration Statement and Prospectuses, excluding
         the documents incorporated by reference therein, as of their
         respective effective or issue dates (other than the financial
         statements and supporting schedules included therein, as to which such
         counsel need express no opinion), complied as to form in all material
         respects with the requirements of the 1933 Act and the 1933 Act
         Regulations.

                             (xii)   The documents incorporated by reference in
         the Prospectuses (other than the financial statements and supporting
         schedules therein, as to which such counsel need express no opinion),
         when they were filed with the Commission complied as to form in all
         material respects with





                                      -26-
<PAGE>   27

         the requirements of the 1934 Act and the 1934 Act Regulations.

                            (xiii)   The Company meets the registrant
         requirements for use of Form S-3 under the 1933 Act Regulations.

                             (xiv)   The execution, delivery and performance by
         the Company of this Agreement, the International Pricing Agreement,
         the U.S. Purchase Agreement and the U.S. Pricing Agreement and the
         consummation of the transactions contemplated herein and therein and
         in the Registration Statement and Prospectus and compliance by the
         Company with its obligations hereunder and thereunder do not and will
         not, whether with or without the giving of notice or passage of time
         or both, conflict with or constitute a breach of, or default under or
         result in the creation or imposition of any lien, charge or
         encumbrance upon any property or assets of the Company or any
         subsidiary thereof pursuant to any contract, indenture, mortgage, deed
         of trust, loan or credit agreement, note, lease or any other agreement
         or instrument to which the Company or any of its subsidiaries is a
         party or by which it or any of them may be bound, or to which any of
         the properties, assets or operations of the Company or any of its
         subsidiaries is subject, except for such conflicts, breaches,
         defaults, liens, charges or encumbrances that would not result in a
         Material Adverse Effect, nor will such action result in any violation
         of the provisions of the charter or by-laws of the Company or any
         subsidiary thereof, or any applicable law, statute, rule, regulation,
         judgment, order, writ or decree of any government, governmental
         instrumentality or court, domestic or foreign, having jurisdiction
         over the Company or any of its subsidiaries or any of their respective
         properties, assets or operations.

                              (xv)   To the best of such counsel's knowledge,
         there is no action, suit, proceeding, inquiry or investigation before
         or by any court or governmental agency or body, domestic or foreign,
         pending or threatened, against or affecting the Company or any
         subsidiary thereof which is required to be disclosed in the
         Registration Statement and the Prospectuses (other than as disclosed
         therein), or which





                                      -27-
<PAGE>   28

         might reasonably be expected to result in a Material Adverse Effect,
         or which might reasonably be expected to materially and adversely
         affect the assets, properties or operations thereof of the
         consummation of the transactions contemplated in this Agreement, the
         International Pricing Agreement, the U.S. Purchase Agreement and the
         U.S. Pricing Agreement or the performance by the Company of its
         obligations hereunder and thereunder.

                             (xvi)   The information in the Prospectuses under
         the captions "MCN Energy Group Inc.," "Use of Proceeds", "Certain
         United States Tax Consequences to Non-United States Holders,"
         "Capitalization," and "Description of MCN Capital Stock",to the extent
         that they involve matters of law, summaries of legal matters, the
         Company's charter and by-laws or legal proceedings, or legal
         conclusions, has been reviewed by such counsel and is correct in all
         material respects.

                            (xvii)   To the best of such counsel's knowledge
         and information, neither the Company or any subsidiary thereof is in
         violation of its charter or by-laws and no default by the Company or
         any subsidiary thereof exists in the due performance or observance of
         any material obligation, agreement, covenant or condition contained in
         any contract, indenture, mortgage, loan or credit agreement, note,
         lease, or other agreement or instrument to which the Company or any of
         its subsidiaries is a party or by which it or any of them or any of
         their respective properties or assets are bound, except for violations
         and defaults that would not result in a Material Adverse Effect.

                           (xviii)   All descriptions in the Prospectuses of
         contracts and other documents to which the Company or its subsidiaries
         are a party are accurate in all material respects.  To the best of
         such counsel's knowledge and information, there are no franchises,
         contracts, indentures, mortgages, loan or credit agreements, notes,
         leases or other instruments required to be described or referred to in
         the Registration Statement or incorporated by reference as exhibits
         thereto other than those described or referred to therein or filed or
         incorporated by reference as exhibits





                                      -28-
<PAGE>   29

         thereto, and the descriptions thereof or references thereto are
         correct in all material respects.

                             (xix)   No filing with, authorization, approval,
         consent, license, order, registration, qualification or decree of, any
         court or governmental authority or agency, domestic or foreign (other
         than under the 1933 Act and the 1933 Act Regulations, which have been
         obtained, or as may be required under the securities or blue sky laws
         of the various states, as to which such counsel need express no
         opinion) is necessary or required in connection with the due
         authorization, execution and delivery of this Agreement, the
         International Pricing Agreement, the U.S. Purchase Agreement and the
         U.S. Pricing Agreement or for the offering, issuance and sale of the
         Securities or the performance by the Company of its obligations in
         this Agreement, the International Pricing Agreement, the U.S.
         Purchase Agreement and the U.S. Pricing Agreement.

                              (xx)   The Company and its subsidiaries possess
         all licenses, franchises, permits, certificates, authorizations,
         approvals, consents and orders of all governmental authorities or
         agencies necessary for the ownership or lease of the material
         properties owned or leased by each of them and for the operation of
         the business carried on by each of them as described in the
         Registration Statement and the Prospectuses with such exceptions as
         are not material and do not materially interfere with the conduct of
         the business of the Company and its subsidiaries, considered as one
         enterprise; all such licenses, franchises, permits, certificates,
         authorizations, approvals, consents and orders are in full force and
         effect and contain no unduly burdensome provisions that would
         interfere with the conduct of the business of the Company and its
         subsidiaries, considered as one enterprise and, except as otherwise
         set forth in the Registration Statement or the Prospectus, there are
         no legal or governmental proceedings pending or threatened that would
         result in a material modification, suspension or revocation thereof.

                             (xxi)   The Company is not an "investment company"
         or an entity under the "control" of an "investment company" as such
         terms are defined in the 1940 Act.





                                      -29-
<PAGE>   30


                            (xxii)   The Company is presently exempt from the
         provisions of the Public Utility Holding Company Act of 1935 (except
         Section 9 thereof) which would otherwise require it to register
         thereunder.

                          Moreover, such counsel shall confirm that nothing has
         come to such counsel's attention that would lead such counsel to
         believe that the Registration Statement, including any Rule 430A
         Information and Rule 434 Information (if applicable)(except for
         financial statements and the notes thereto, the financial schedules
         and any other financial data included or incorporated by reference
         therein, as to which counsel need express no opinion), at the time
         such Registration Statement became effective or at the date of the
         International Pricing Agreement, contained an untrue statement of a
         material fact or omitted to state a material fact required to be
         stated therein or necessary to make the statements therein not
         misleading or that the Prospectuses or any amendment or supplement
         thereto (except for financial statements and the notes thereto, the
         financial schedules, and any other financial data included or
         incorporated by reference therein, as to which counsel need express no
         opinion), at the time the Prospectuses were issued, at the time of any
         such amended or supplemented Prospectuses were issued or at the
         Closing Time, included or includes an untrue statement of a material
         fact or omitted or omits to state a material fact necessary in order
         to make the statements therein, in the light of the circumstances
         under which they were made, not misleading.

                 (2)  The favorable opinion, dated as of then Closing Time, of
LeBoeuf, Lamb, Greene & MacRae, L.L.P., counsel for the International Managers,
together with signed or reproduced copies of such letter for each of the other
Underwriters with respect to the matters set forth in clauses (i), (v), (vi),
(ix), (x), (xi) and the last paragraph of Section 5(b)(1).  In giving such
opinion, LeBoeuf, Lamb, Greene & MacRae, L.L.P. may rely as to certain matters
of Michigan law upon the opinion of Daniel L. Schiffer, Esq., counsel for the
Company, which shall be delivered in accordance with Section 5(b)(1) hereof.

         (c)  At the Closing Time, the Lead Managers shall have received a
certificate of the President or a Vice-President of





                                      -30-
<PAGE>   31

the Company and of the Chief Financial Officer or Chief Accounting Officer
of the Company and dated as of the Closing Time, to the effect that (i) there
has been no material adverse change in the condition, financial or otherwise,
or in the earnings, business affairs or business prospects of the Company and
its subsidiaries considered as one enterprise, whether or not in the ordinary
course of business, (ii) the representations and warranties in Section 1 hereof
are true and correct with the same force and effect as though expressly made at
and as of the Closing Time, (iii) the Company has complied with all agreements
and satisfied all conditions on its part to be performed or satisfied at or
prior to the Closing Time, and (iv) no stop order suspending the effectiveness
of the Registration Statement has been issued and no proceedings for that
purpose have been initiated or threatened by the Commission.

         (d)  At the time of the execution of this Agreement, the Lead Managers
shall have received from Deloitte & Touche LLP a letter dated such date in form
and substance satisfactory to the Lead Managers, together with signed or
reproduced copies of such letter for each of the other International Managers,
to the effect set forth below and as to such other matters as the Lead Managers
may reasonably request, that:

                 (i)      They are independent certified public accountants
         with respect to the Company and its subsidiaries within the meaning of
         the 1933 Act and the 1933 Act Regulations;

                 (ii)     In their opinion, the consolidated financial
         statements and any financial statement schedules audited by them and
         included or incorporated by reference in the Registration Statement
         and the Prospectuses as amended or supplemented comply as to form in
         all material respects with the applicable accounting requirements of
         the 1933 Act and the 1933 Act Regulations and the 1934 Act and the
         1934 Act Regulations;

                 (iii) On the basis of limited procedures, not constituting an
         audit in accordance with generally accepted auditing standards,
         including a review in accordance with standards established by the
         American Institute of Certified Public Accountants of the unaudited
         condensed consolidated financial statements included in the Company's
         Quarterly





                                      -31-
<PAGE>   32

         Reports on Form 10-Q incorporated by reference in the Registration
         Statement and the Prospectuses as amended or supplemented for the
         periods specified in such letter, a reading of the latest available
         unaudited interim consolidated financial statements of the Company and
         its subsidiaries, a reading of the minutes of the Company and its
         subsidiaries since the audited consolidated financial statements set
         forth in the Company's Annual Report on Form 10-K for the most recent
         year, inquiries of officials of the Company and its subsidiaries
         responsible for financial and accounting matters and such other
         inquiries and procedures as may be specified in such letter, nothing
         came to their attention that caused them to believe that:

                          (A)     the unaudited condensed consolidated
                 financial statements set forth in the Company's Quarterly
                 Reports on Form 10-Q incorporated by reference in the
                 Registration Statement and the Prospectuses as amended or
                 supplemented do not comply as to form in all material respects
                 with the applicable accounting requirements of the 1934 Act
                 and the 1934 Act Regulations as they apply to Form 10-Q or any
                 material modifications should be made for them to be in
                 conformity with generally accepted accounting principles
                 applied on a basis substantially consistent with that of the
                 audited consolidated financial statements set forth in the
                 Company's Annual Report on Form 10-K for the most recent year
                 ended incorporated by reference in the Registration Statement
                 and the Prospectuses as amended or supplemented;

                          (B)     any other unaudited income statement data and
                 balance sheet items included in the Prospectuses as amended or
                 supplemented do not agree with the corresponding items in the
                 unaudited consolidated financial statements from which such
                 data and items were derived;

                          (C)     any unaudited pro forma consolidated condensed
                 financial statements or any unaudited pro forma consolidating
                 financial statements included or incorporated by reference in
                 the Prospectuses as amended or supplemented do not comply as
                 to form in all





                                      -32-
<PAGE>   33

                 material respects with the applicable accounting requirements
                 of the 1933 Act and the 1933 Act Regulations and the 1934 Act
                 and the 1934 Act Regulations or the pro forma adjustments have
                 not been properly applied to the historical amounts in the
                 compilation of those statements;

                          (D)     as of a specified date not more than five
                 days prior to the date of this Agreement, there has been any
                 decrease or increase in the common stock (except for any
                 increases in connection with any employee benefit, dividend
                 reinvestment or stock purchase plan of the Company) or any
                 increase or decrease in redeemable cumulative preferred
                 securities or long-term debt including capital lease
                 obligations and current maturities (except for sinking fund
                 and installment requirements under their long-term debt
                 agreements, terms of the preferred securities of subsidiaries
                 and purchases in the open market in anticipation thereof) or
                 any increase in short-term debt, or any decrease in
                 consolidated common shareholders' equity of the Company and
                 its consolidated subsidiaries (other than periodic dividends
                 declared to shareholders and any decreases pursuant to the
                 terms of the preferred redeemable increased dividend equity
                 securities of the Company), in each case as compared with the
                 corresponding amounts shown in the latest consolidated
                 statement of financial position of the Company and its
                 subsidiaries incorporated by reference in the Registration
                 Statement and the Prospectuses as amended or supplemented,
                 except in each case for increases or decreases which the
                 Prospectuses as amended or supplemented, including financial
                 information incorporated by reference, discloses have occurred
                 or may occur or which are described in such letter; and

                          (E)     for the period from the date of the latest
                 consolidated financial statements included or incorporated by
                 reference in the Prospectuses as amended or supplemented to
                 the end of the latest period for which unaudited condensed
                 consolidated financial statements or financial information are
                 available there





                                      -33-
<PAGE>   34

                 were any decreases in consolidated operating revenues,
                 operating income, net income or earnings available for Common
                 Stock of the Company and its consolidated subsidiaries, or any
                 increases in any items specified by the Lead Managers, in each
                 case as compared with the corresponding period in the
                 preceding year and with any other period of corresponding
                 length specified by the Lead Managers, except in each case for
                 increases or decreases which the Prospectuses as amended or
                 supplemented, including financial information incorporated by
                 reference, discloses have occurred or may occur or which are
                 described in such letter; and

                          (F)     the unaudited condensed consolidated
                 financial statements referred to in Clause (E) are not stated
                 on a basis substantially consistent with the audited
                 consolidated financial statements incorporated by reference in
                 the Registration Statement and the Prospectuses as amended or
                 supplemented.

                 (iv)     The unaudited selected financial information with 
         respect to the consolidated results of operations and financial
         position of the Company for the five most recent fiscal years included
         in the Prospectuses as amended or supplemented and included or
         incorporated by reference in the Company's Annual Report on Form 10-K
         for the most recent fiscal year agrees with the corresponding amounts
         (after restatement where applicable) in the audited consolidated
         financial statements for such five fiscal years which were included or
         incorporated by reference in the Company's Annual Reports on Form 10-K
         for such fiscal years;

                 (v)      In addition to the limited procedures, reading of
         minutes, inquiries and other procedures referred to in clause (iii)
         and (iv) above, they have carried out certain other specified
         procedures, not constituting an audit in accordance with generally
         accepted auditing standards, with respect to certain amounts,
         percentages and financial information which are derived from the
         general accounting and financial records of the Company and its
         subsidiaries, which appear in the Prospectuses as amended or
         supplemented and the Registration Statement, in the Company's Annual
         Report on Form 10-K for the latest year ended and in the





                                      -34-
<PAGE>   35

         Company's Quarterly Reports on Form 10-Q since the latest Annual
         Report on Form 10-K and which are specified by the U.S.
         Representatives, and have compared certain of such amounts,
         percentages and financial information with the accounting and
         financial records of the Company and its subsidiaries and have found
         them to be in agreement; and

                 (vi)     If applicable and agreed to by the parties, they have
         made a review in accordance with standards established by the American
         Institute of Certified Public Accountants of the selected financial
         data, pro forma financial information, prospective financial
         statements, consolidating financial statements and/or condensed
         financial statements derived from audited financial statements of the
         Company for the periods specified in such letter, as indicated in
         their reports thereon, copies of which have been furnished to the U.S.
         Representatives.

         (e)  At the Closing Time, the Lead Managers shall have received from
Deloitte & Touche LLP a letter, dated as of the Closing Time, to the effect
that they reaffirm the statements made in the letter furnished pursuant to
subsection (d) of this Section, except that the specified date referred to
shall be a date not more than three business days prior to the Closing Time.

         (f)  At the Closing Time the Securities shall have been approved for
listing on the New York Stock Exchange, subject only to official notice of
issuance.

         (g)  Contemporaneously with the purchase by the International Managers
of the Initial International Securities under this Agreement, the U.S.
Underwriters shall have purchased the Initial U.S. Securities under the U.S.
Purchase Agreement.

         (h)  At the Closing Time, and at each Date of Delivery, if any,
counsel for the International Managers shall have been furnished with such
documents and opinions as they may require for the purpose of enabling them to
pass upon the issuance and sale of the Securities as herein contemplated, or in
order to evidence the accuracy of any of the representations or warranties, or
the fulfillment of any of the conditions herein contained; and all proceedings
taken by the Company in connection with the issuance and sale of the Securities
as herein





                                      -35-
<PAGE>   36

contemplated shall be satisfactory in form and substance to the Lead Managers
and counsel for the International Managers.

         (i)  In the event that the International Managers exercise their
option provided in Section 2(b) hereof to purchase all or any portion of the
International Option Securities, the representations and warranties of the
Company contained herein and the statements in any certificates furnished by
the Company hereunder shall be true and correct as of, and as if made on, each
Date of Delivery, and at the relevant Date of Delivery, the Lead Managers shall
have received:

                 (1)  A certificate, dated such Date of Delivery, of the
         President or a Vice-President of the Company and the Chief Financial
         Officer or Chief Accounting Officer of the Company  confirming that
         the certificate delivered at the Closing Time pursuant to Section 5(e)
         hereof is true and correct as of such Date of Delivery.

                 (2)  The favorable opinion of Daniel L. Schiffer, Esq., Senior
         Vice President, General Counsel and Secretary for the Company, in form
         and substance satisfactory to counsel for the International Managers,
         dated such Date of Delivery, relating to the International Option
         Securities to be purchased on such Date of Delivery and otherwise to
         the same effect as the opinion required by Section 5(b)(1) hereof.

                 (3)  The favorable opinion of LeBoeuf, Lamb, Greene & MacRae,
         L.L.P., counsel for the International Managers, dated such Date of
         Delivery, relating to the International Option Securities to be
         purchase on such Date of Delivery and otherwise to the same effect as
         the opinion required by Section 5(b)(2) hereof.

                 (4)  A letter from Deloitte & Touche LLP in form and substance
         satisfactory to the Lead Managers and dated such Date of Delivery,
         substantially in the same form and substance as the letter furnished
         to the Lead Managers pursuant to Section 5(d) hereof, except that the
         "specified date" on the letter furnished pursuant to this paragraph
         shall be a date not more than five days prior to such Date of
         Delivery.





                                      -36-
<PAGE>   37

         If any condition specified in this Section shall not have been
fulfilled when and as required to be fulfilled, this Agreement, or, in the case
of any condition to the purchase of International Option Securities on a Date
of Delivery which is after the Closing Time, the obligations of the several
International Managers to purchase the relevant Option Securities, may be
terminated by the Lead Managers by notice to the Company at any time at or
prior to the Closing Time or such Date of Delivery, as the case may be, and
such termination shall be without liability of any party to any other party
except as provided in Section 4 and except that Sections 1, 6, 7 and 8 shall
survive any such termination and remain in full force and effect.

         SECTION 6.  Indemnification.

         (a)  The Company agrees to jointly and severally indemnify and hold
harmless each International Manager and each person, if any, who controls any
International Manager within the meaning of Section 15 of the 1933 Act or
Section 20 of the 1934 Act as follows:

                               (i)   against any and all loss, liability,
         claim, damage and expense whatsoever, as incurred, arising out of any
         untrue statement or alleged untrue statement of a material fact
         contained in the Registration Statement (or any amendment thereto),
         including the Rule 430A Information and the Rule 434 Information, if
         applicable, or the omission or alleged omission therefrom of a
         material fact required to be stated therein or necessary to make the
         statements therein not misleading or arising out of any untrue
         statement or alleged untrue statement of a material fact contained in
         any preliminary prospectus or the Prospectuses (or any amendment or
         supplement thereto), or the omission or alleged omission therefrom of
         a material fact necessary in order to make the statements therein, in
         the light of the circumstances under which they were made, not
         misleading;

                              (ii)   against any and all loss, liability,
         claim, damage and expense whatsoever, as incurred, to the extent of
         the aggregate amount paid in settlement of any litigation, or any
         investigation or proceeding by any governmental agency or body,
         commenced or threatened, or of any claim





                                      -37-
<PAGE>   38

         whatsoever based upon any such untrue statement or omission, or any
         such alleged untrue statement or omission, provided, that (subject to
         Section 6(d) below) any such settlement is effected with the written
         consent of the Company; and

                             (iii)   against any and all expense whatsoever, as
         incurred (including, the fees, expenses and disbursements of counsel
         chosen by Merrill Lynch International), reasonably incurred in
         investigating, preparing or defending against any litigation, or any
         investigation or proceeding by any governmental agency or body,
         commenced or threatened, or any claim whatsoever based upon any such
         untrue statement or omission, or any such alleged untrue statement or
         omission, to the extent that any such expense is not paid under (i) or
         (ii) above;

provided, however, that this foregoing indemnity agreement shall not apply to
any loss, liability, claim, damage or expense to the extent arising out of any
untrue statement or omission or alleged untrue statement or omission made in
reliance upon and in conformity with written information furnished to the
Company by any International Manager through Merrill Lynch International
expressly for use in the Registration Statement (or any amendment thereto),
including the Rule 430A Information and the Rule 434 Information, if
applicable, or any preliminary prospectus or the International Prospectus (or
any amendment or supplement thereto); provided, further, that such indemnity
with respect to the preliminary prospectus shall not inure to the benefit of
the International Managers (or any person controlling such International
Managers) from whom the person asserting any such loss, liability, claim,
damage or expense purchased any of the Securities which are the subject thereof
if such person did not receive a copy of the International Prospectus (or the
International Prospectus as amended or supplemented) (in each case exclusive of
the documents from which information is incorporated by reference) at or prior
to the written confirmation of the sale of such International Securities to
such person in any case where the Company complied with its obligations under
Sections 3(c) and 3(g) hereof and any such untrue statement or omission or
alleged untrue statement or omission of a material fact contained in such
preliminary prospectus (or any amendment or supplement thereto) was corrected





                                      -38-
<PAGE>   39

in the International Prospectus (or the International Prospectus as amended or
supplemented).

         (b)  Each International Manager severally agrees to indemnify and hold
harmless the Company, its directors, each of its officers who signed the
Registration Statement and each person, if any, who controls the Company within
the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act against
any and all loss, liability, claim, damage and expense described in the
indemnity contained in subsection (a) of this Section, as incurred, but only
with respect to untrue statements or omissions, or alleged untrue statements or
omissions, made in the Registration Statement (or any amendment thereto),
including the Rule 430A Information and the Rule 434 Information, if
applicable, or any preliminary prospectus or the International Prospectus (or
any amendment or supplement thereto) in reliance upon and in conformity with
written information furnished to the Company by such International Manager
through Merrill Lynch International expressly for use in the Registration
Statement (or any amendment thereto) or such preliminary prospectus or the
International Prospectus (or any amendment or supplement thereto).

         (c)  Each indemnified party shall give notice as promptly as
reasonably practicable to each indemnifying party of any action commenced
against it in respect of which indemnity may be sought hereunder, but failure
to so notify an indemnifying party shall not relieve such indemnifying party
from any liability hereunder to the extent it is not materially prejudiced as a
result thereof and in any event shall not relieve it from any liability which
it may have otherwise than on account of this indemnity agreement.  In the case
of parties indemnified pursuant to Section 6(a) above, counsel to the
indemnified parties shall be selected by Merrill Lynch International, and, in
the case of parties indemnified pursuant to Section 6(b) above, counsel to the
indemnified parties shall be selected by the Company.  An indemnifying party
may participate at its own expense in the defense of any such action; provided,
however, that counsel to the indemnifying party shall not (except with the
consent of the indemnified party) also be counsel to the indemnified party.  In
no event shall the indemnifying parties be liable for fees and expenses of more
than one counsel (in addition to any local counsel) separate from their own
counsel for all indemnified





                                      -39-
<PAGE>   40

parties in connection with any one action or separate but similar or related
actions in the same jurisdiction arising out of the same general allegations or
circumstances.  No indemnifying party shall, without the prior written consent
of the indemnified parties, settle or compromise or consent to the entry of any
judgment with respect to any litigation, or any investigation or proceeding by
any governmental agency or body, commenced or threatened, or any claim
whatsoever in respect of which indemnification or contribution could be sought
under this Section 6 or Section 7 hereof (whether or not the indemnified
parties are actual or potential parties thereto), unless such settlement,
compromise or consent (i) includes an unconditional release of each indemnified
party from all liability arising out of such litigation, investigation,
proceeding or claim and (ii) does not include a statement as to or an admission
of fault, culpability or a failure to act by or on behalf of any indemnified
party.

         (d)  If at any time an indemnified party shall have requested an
indemnifying party to reimburse the indemnified party for fees and expenses of
counsel, such indemnifying party agrees that it shall be liable for any
settlement of the nature contemplated by Section 6(a)(ii) effected without its
written consent if (i) such settlement is entered into more than 45 days after
receipt by such indemnifying party of the aforesaid request, (ii) such
indemnifying party shall have received notice of the terms of such settlement
at least 30 days prior to such settlement being entered into and (iii) such
indemnifying party shall not have reimbursed such indemnified party in
accordance with such request prior to the date of such settlement.

         SECTION 7.  Contribution. If the indemnification provided for in
Section 6 hereof is for any reason unavailable to or insufficient to hold
harmless an indemnified party in respect of any losses, liabilities, claims,
damages or expenses referred to therein, then each indemnifying party shall
contribute to the aggregate amount of such losses, liabilities, claims, damages
and expenses incurred by such indemnified party, as incurred, (i) in such
proportion as is appropriate to reflect the relative benefits received by the
Company on the one hand and the International Underwriters on the other hand
from the offering of the International Securities pursuant to this Agreement or
(ii) if the allocation provided by clause (i) is not permitted by





                                      -40-
<PAGE>   41

applicable law, in such proportion as is appropriate to reflect not only the
relative benefits referred to in clause (i) above but also the relative fault
of the Company on the one hand and the International Managers on the other hand
in connection with the statements or omissions which resulted in such losses,
liabilities, claims, damages or expenses, as well as any other relevant
equitable considerations.

         The relative benefits received by the Company on the one hand and the
International Managers on the other hand in connection with the offering of the
International Securities pursuant to this Agreement shall be deemed to be in
the same respective proportions as the total net proceeds from the offering of
such International Securities pursuant to this Agreement (before deducting
expenses) received by the Company and the total underwriting discount received
by the International Managers, in each case as set forth on the cover of the
International Prospectus, or, if Rule 434 is used, the corresponding location
on the Term Sheet, bear to the aggregate initial public offering price of such
International Securities as set forth on such cover.

         The relative fault of the Company on the one hand and the
International Managers on the other hand shall be determined by reference to,
among other things, whether the untrue or alleged untrue statement of a
material fact or the omission or alleged omission to state a material fact
relates to information supplied by the Company or by the International Managers
and the parties' relative intent, knowledge, access to information and
opportunity to correct or prevent such statement or omission.

         The Company and the International Managers agree that it would not be
just and equitable if contribution pursuant to this Section 7 were determined
by pro rata allocation (even if the International Managers were treated as one
entity for such purpose) or by any other method of allocation which does not
take account of the equitable considerations referred to above in this Section
7.  The aggregate amount of losses, liabilities, claims, damages and expenses
incurred by an indemnified party and referred to above in this Section 7 shall
be deemed to include any legal or other expenses reasonably incurred by such
indemnified party in investigating, preparing or defending against any
litigation, or any investigation or proceeding by any





                                      -41-
<PAGE>   42

governmental agency or body, commenced or threatened, or any claim whatsoever
based upon any such untrue or alleged untrue statement or omission or alleged
omission.

         Notwithstanding the provisions of this Section 7, no International
Manager shall be required to contribute any amount in excess of the amount by
which the total price at which the U.S. Securities underwritten by it and
distributed to the public were offered to the public exceeds the amount of any
damages which such U.S. Underwriter has otherwise been required to pay by
reason of any such untrue or alleged untrue statement or omission or alleged
omission.

         No person guilty of fraudulent misrepresentation (within the meaning
of Section 11(f) of the 1933 Act) shall be entitled to contribution from any
person who was not guilty of such fraudulent misrepresentation.

         For purposes of this Section 7, each person, if any, who controls a
International Manager within the meaning of Section 15 of the 1933 Act or
Section 20 of the 1934 Act shall have the same rights to contribution as such
International Manager, and each director of the Company, each officer of the
Company who signed the Registration Statement, and each person, if any, who
controls the Company within the meaning of Section 15 of the 1933 Act or
Section 20 of the 1934 Act shall have the same rights to contribution as the
Company.  The International Managers' respective obligations to contribute
pursuant to this Section 7 are several in proportion to the number of Initial
International Securities set forth opposite their respective names in Schedule
A to this Agreement, and not joint.

         SECTION 8.  Representations, Warranties and Agreements to Survive
Delivery.  All representations, warranties and agreements contained in this
Agreement and the International Pricing Agreement, or contained in certificates
of officers of the Company or any of its subsidiaries submitted pursuant
hereto, shall remain operative and in full force and effect, regardless of any
investigation made by or on behalf of any International Manager or controlling
person, or by or on behalf of the Company, and shall survive delivery of and
payment for the Securities to the International Managers.





                                      -42-
<PAGE>   43


         SECTION 9.  Termination of Agreement.

         (a)  The Lead Managers may terminate this Agreement, by notice to the
Company at any time at or prior to the Closing Time, if (i) there has been,
since the date of this Agreement or since the respective dates as of which
information is given in the International Prospectus, any material adverse
change or any development which could reasonably be expected to result in a
prospective material adverse change, financial or otherwise, or in the
earnings, business affairs or business prospects of the Company and its
subsidiaries considered as one enterprise, whether or not arising in the
ordinary course of business, or (ii) there has occurred any material adverse
change in the financial markets in the United States or any outbreak of
hostilities or escalation of hostilities or other calamity or crisis, or any
change or development involving a prospective change in national or
international political, financial or economic conditions the effect of which
is such as to make it, in the judgment of the Lead Managers, impracticable to
market the Securities or to enforce contracts for the sale of the Securities,
or (iii) if trading in the Common Stock or any other security of the Company
has been suspended or limited by the Commission, National Association of
Securities Dealers, Inc. or the New York Stock Exchange, or if trading
generally on either the American Stock Exchange, the New York Stock Exchange or
in the over-the-counter market has been suspended or limited, or minimum or
maximum prices for trading have been fixed, or maximum ranges for prices for
securities have been required, by either of said exchanges or by such system or
by order of the Commission, NASD or any other governmental authority, or (iv)
if a banking moratorium has been declared by either Federal, New York or
Michigan authorities.

         (b)  If this Agreement and the International Pricing Agreement are
terminated pursuant to this Section 9, such termination shall be without
liability of any party to any other party except as provided in Section 4, and
provided, further, that Sections 1, 6, 7 and 8 shall survive such termination
and remain in full force and effect.

         SECTION 10.  Default by One or More of the International Managers.  If
one or more of the International Managers shall fail at the Closing Time or a
Date of Delivery to purchase the





                                      -43-
<PAGE>   44

Securities which it or they are obligated to purchase under this Agreement and
the International Pricing Agreement (the "Defaulted Securities"), the Lead
Managers shall have the right, within 24 hours thereafter, to make arrangements
for one or more of the non-defaulting International Managers, or any other
underwriters, to purchase all, but not less than all, of the Defaulted
Securities in such amounts as may be agreed upon and upon the terms herein set
forth; if, however, the Lead Managers shall not have completed such
arrangements within such 24-hour period, then:

                 (a)  if the number of Defaulted Securities does not exceed 10%
of the number of International Securities to be purchased on such date, each of
the non-defaulting International Managers shall be obligated, severally and not
jointly, to purchase the full amount thereof in the proportions that their
respective underwriting obligations hereunder bear to the underwriting
obligations of all non-defaulting International Managers, or

                 (b)  if the number of Defaulted Securities exceeds 10% of the
number of International Securities to be purchased on such date, this
Agreement, or with respect to any Date of Delivery which occurs after the
Closing Time, the obligations of the International Managers to purchase and of
the Company to sell the Option Securities to be purchase and sold on such Date
of Delivery shall terminate without liability on the part of any non-defaulting
International Manager.

                 No action taken pursuant to this Section 10 shall relieve any
defaulting International Manager from liability in respect of its default.

                 In the event of any such default which does not result in a
termination of this Agreement or, in the case of a Date of Delivery which is
after the Closing Time, which does not result in a termination of the
obligation of the International Managers to purchase and the Company to sell
the relevant International Option Securities, as the case may be, either the
Lead Managers or the Company shall have the right to postpone the Closing Time
or the relevant Date of Delivery, as the case may be, for a period not
exceeding seven days in order to effect any required changes in the
Registration Statement or the Prospectuses or in





                                      -44-
<PAGE>   45

any other documents or arrangements.  As used herein, the term "International
Manager" includes any person substituted for an International Managers under
this Section 10.

         SECTION 11.  Notices.  All notices and other communications hereunder
shall be in writing and shall be deemed to have been duly given if mailed or
transmitted by any standard form of telecommunication.  Notices to the
International Managers shall be directed to the Lead Managers at: Merrill Lynch
International, Ropemaker Place, 25 Ropemaker Street, London EC2Y 9LY, England,
attention of Equity Capital Markets, with a copy to LeBoeuf, Lamb, Greene &
MacRae, L.L.P., 125 West 55th Street, New York, New York  10019-5389, attention
of William S. Lamb, Esq.; notices to the Company shall be directed to it at MCN
Energy Group Inc., 500 Griswold Street, Detroit, Michigan 48226, attention of
Daniel L. Schiffer, Esq., Senior Vice President, General Counsel and Secretary.

         SECTION 12.  Parties.  This Agreement and the International Pricing
Agreement shall each inure to the benefit of and be binding upon the Company
and the International Managers and their respective successors.  Nothing
expressed or mentioned in this Agreement or the International Pricing Agreement
is intended or shall be construed to give any person, firm or corporation,
other than the International Managers and the Company and their respective
successors and the controlling persons and officers and directors referred to
in Sections 6 and 7 and their heirs and legal representatives, any legal or
equitable right, remedy or claim under or in respect of this Agreement or the
International Pricing Agreement or any provision herein or therein contained.
This Agreement and the International Pricing Agreement and all conditions and
provisions hereof and thereof are intended to be for the sole and exclusive
benefit of the parties hereto and thereto and their respective successors and
legal representatives, and said controlling persons and officers and directors
and their heirs and legal representatives, and for the benefit of no other
person, firm or corporation.  No purchaser of Securities from any International
Manager shall be deemed to be a successor by reason merely of such purchase.

         SECTION 13.  GOVERNING LAW AND TIME.  THIS AGREEMENT AND THE U.S.
PRICING AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
LAWS OF THE STATE OF NEW YORK APPLICABLE TO





                                      -45-
<PAGE>   46

AGREEMENTS MADE AND TO BE PERFORMED IN SAID STATE.  SPECIFIED TIMES OF DAY
REFER TO NEW YORK CITY TIME UNLESS OTHERWISE INDICATED.

         SECTION 14.  Effect of Headings.  The Article and Section headings
herein are for convenience only and shall not affect the construction hereof.





                                      -46-
<PAGE>   47

                 If the foregoing is in accordance with your understanding of
our agreement, please sign and return to the Company a counterpart hereof,
whereupon this instrument, along with all counterparts, shall become a binding
agreement between the International Managers and the Company in accordance with
its terms.


                                        Very truly yours,

                                        MCN ENERGY GROUP INC.




                                        By:/s/ Sebastian Coppola             
                                           -----------------------------------
                                           Name: Sebastian Coppola           
                                           Title: Senior Vice President and  
                                                  Treasurer                  



CONFIRMED AND ACCEPTED,
  as of the date first above written:

MERRILL LYNCH INTERNATIONAL
DONALDSON, LUFKIN & JENRETTE
          SECURITIES CORPORATION
A.G. EDWARDS & SONS, INC.
PAINEWEBBER INTERNATIONAL (U.K.) LTD.
SALOMON BROTHERS INTERNATIONAL LIMITED
SMITH BARNEY INC.

By: MERRILL LYNCH INTERNATIONAL



By: /s/ Anthony V. Leness
    --------------------------------------
Authorized Signatory:

For themselves and as the Lead Managers of the
several International Managers named in Schedule A hereto.





                                      -47-
<PAGE>   48


                                   SCHEDULE A





<TABLE>
<CAPTION>
                        Name of International Manager              Number of
                        -----------------------------               Initial
                                                                 International
                                                                   Securities 
                                                                 -------------
 <S>                                                              <C>
 Merrill Lynch International . . . . . . . . . . . . . . . . .      250,000
                                                              
 Donaldson, Lufkin & Jenrette                                 
       Securities Corporation  . . . . . . . . . . . . . . . .      250,000
                                                              
 A.G. Edwards & Sons, Inc. . . . . . . . . . . . . . . . . . .      250,000
 PaineWebber International (U.K.) Ltd. . . . . . . . . . . . .      250,000
                                                              
 Salomon Brothers International Limited  . . . . . . . . . . .      250,000
 Smith Barney Inc. . . . . . . . . . . . . . . . . . . . . . .      250,000
                                                              
                                                                           
                                                                  ---------
                                                              
           Total . . . . . . . . . . . . . . . . . . . . . . .    1,500,000
                                                                  =========
</TABLE>
<PAGE>   49

                                                                       EXHIBIT A

                                1,500,000 SHARES

                             MCN ENERGY GROUP INC.

                            (A MICHIGAN CORPORATION)

                                  COMMON STOCK
                           (PAR VALUE $.01 PER SHARE)

                               PRICING AGREEMENT


                                                                   June 24, 1997


MERRILL LYNCH INTERNATIONAL
DONALDSON, LUFKIN & JENRETTE
      SECURITIES CORPORATION
A.G. EDWARDS & SONS, INC.
PAINEWEBBER INTERNATIONAL (U.K.) LTD.
SALOMON BROTHERS INTERNATIONAL LIMITED
SMITH BARNEY INC.
  As the Lead Managers of the several International Managers
  named in the within-mentioned International Purchase Agreement
c/o Merrill Lynch International
Ropemaker Place
25 Ropemaker Street
London EC2Y 9LY
England

Ladies and Gentlemen:

                 Reference is made to the International Purchase Agreement,
dated June 24, 1997 (the "International Purchase Agreement"), relating to the
purchase by the several International Managers named in Schedule A thereto for
whom Merrill Lynch International, Donaldson, Lufkin & Jenrette Securities
Corporation, A.G. Edwards & Sons, Inc., PaineWebber International (U.K.) Ltd.,
Salomon Brothers International Limited and Smith Barney Inc. are acting as
representatives (in such capacity, the "Lead Managers"), of the shares of
common stock, par value $.01 per share, of MCN Energy Group Inc. (the
"Company").  Capitalized terms used which are not defined herein shall have the
meanings assigned to such terms in the International Purchase Agreement.
<PAGE>   50

                 Pursuant to Section 2 of the International Purchase Agreement,
the Company agrees with each International Manager as follows:

                 1.  The initial public offering price per share for the
         Securities, determined as provided in said Section 2, shall be
         $29.125.

                 2.  The purchase price per share for the International
         Securities to be paid by the several International Managers shall be
         $28.295, being an amount equal to the initial public offering price
         set forth above less $.83 per share; provided that the purchase price
         per share for any International Option Securities purchased upon the
         exercise of the over-allotment option described in Section 2(b) of the
         International Purchase Agreement shall be reduced by an amount per
         share equal to any dividends or distributions declared by the Company
         and payable on the Initial International Securities but not payable on
         the International Option Securities.





                                     - 2 -
<PAGE>   51

                 If the foregoing is in accordance with your understanding of
our agreement, please sign and return to the Company a counterpart hereof,
whereupon this instrument, along with all counterparts, will become a binding
agreement between the International Managers and the Company in accordance with
its terms.

                                        Very truly yours,


                                        MCN ENERGY GROUP INC.



                                        By:/s/ Sebastian Coppola             
                                           ---------------------------------- 
                                           Name: Sebastian Coppola           
                                           Title: Senior Vice President and  
                                                  Treasurer                  


CONFIRMED AND ACCEPTED,
as of the date first above written:

MERRILL LYNCH INTERNATIONAL
DONALDSON, LUFKIN & JENRETTE
          SECURITIES CORPORATION
A.G. EDWARDS & SONS, INC.
PAINEWEBBER INTERNATIONAL (U.K.) LTD.
SALOMON BROTHERS INTERNATIONAL LIMITED
SMITH BARNEY INC.

By:  MERRILL LYNCH INTERNATIONAL

By: /s/ Anthony V. Leness 
   ---------------------------------------
Authorized Signatory:

For themselves and as the Lead Managers of the
several International Managers named in the International 
Purchase Agreement.





                                     - 3 -


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