CARDINAL HEALTH INC
8-K, 1997-04-21
DRUGS, PROPRIETARIES & DRUGGISTS' SUNDRIES
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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) April 21, 1997
                                                          --------------

                              CARDINAL HEALTH, INC.
                              ---------------------
               (Exact name of registrant as specified in charter)

        Ohio                           0-12591                31-0958666  
  -----------------              ------------------        ------------------
   (State or other                 (Commission File          (IRS Employer
   jurisdiction of                    Number)                Identification
   incorporation)                                                 No.)




5555 Glendon Court, Dublin, Ohio                                43016
- --------------------------------------------------------------------------------
(Address of principal executive offices)                      (Zip Code)

Registrant's telephone number, including area code (614) 717-5000
                                                   --------------

                                 Not Applicable
- --------------------------------------------------------------------------------
          (Former name or former address, if changed since last report)


<PAGE>   2


Item 7.  Financial Statements and Exhibits.
         ---------------------------------

The following is filed as part of this report:

Exhibits:

1.       Indenture dated as of April 18, 1997 between Cardinal Health, Inc. and
         Bank One, Columbus, NA, Trustee.



<PAGE>   3


                                   SIGNATURES

         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 thereunto duly authorized.

                                                CARDINAL HEALTH, INC.

                                                By: /s/George H. Bennett, Jr.
                                                   --------------------------
                                                       George H. Bennett, Jr.
                                                       Executive Vice President

Dated:   April 21, 1997

<PAGE>   1
                                                                     EXHIBIT 1




                              CARDINAL HEALTH, INC.

                                       AND

                         BANK ONE, COLUMBUS, NA, Trustee


                                    Indenture


                          Dated as of April 18, 1997



                                   ----------
<PAGE>   2
                                TABLE OF CONTENTS

                                   ----------


                                                                            Page
                                                                            ----

PARTIES ...................................................................    1

RECITALS ..................................................................    1

      Authorization of Indenture ..........................................    1
      Compliance with Legal Requirements ..................................    1
      Purpose of and Consideration for Indenture ..........................    1


                                   ARTICLE ONE

                                   DEFINITIONS


SECTION 1.1. Certain Terms Defined ........................................    1
             Attributable Debt ............................................    2
             Board of Directors ...........................................    2
             Business Day .................................................    2
             Commission ...................................................    2
             Consolidated Net Tangible Assets .............................    3
             Consolidated Subsidiary ......................................    3
             Corporate Trust Office .......................................    3
             Depositary ...................................................    3
             Event of Default .............................................    3
             Exempted Debt ................................................    3
             Financing Subsidiary .........................................    4
             Funded Indebtedness ..........................................    4
             Global Security ..............................................    4
             Holder, holder of Securities,
                  Securityholder ..........................................    4
             Indebtedness .................................................    4
             Indenture ....................................................    4
             Interest .....................................................    4
             Issuer .......................................................    4
             Officers' Certificate ........................................    4
             Opinion of Counsel ...........................................    4
             Original Issue Discount Security .............................    4
             Outstanding ..................................................    4
             Person .......................................................    6
             Principal ....................................................    6


                                        i
<PAGE>   3
                                                                            Page
                                                                            ----


                  Rate Hedging Obligations ...............................     6
                  Responsible officer ....................................     7
                  Restricted Subsidiary ..................................     7
                  Security or Securities .................................     7
                  Senior Funded Indebtedness .............................     7
                  Subsidiary .............................................     7
                  Trustee ................................................     7
                  Trust Indenture Act of 1939 ............................     7
                  vice president .........................................     8
                  Yield to Maturity ......................................     8


                                   ARTICLE TWO

                                   SECURITIES


SECTION 2.1. Forms Generally .............................................     8
SECTION 2.2. Form of Trustee's Certificate
                  of Authentication ......................................     8
SECTION 2.3. Amount Unlimited; Issuable in Series ........................     9
SECTION 2.4. Authentication and Delivery of
                  Securities .............................................    10
SECTION 2.5. Execution of Securities .....................................    12
SECTION 2.6. Certificate of Authentication ...............................    13
SECTION 2.7. Denomination and Date of
                  Securities; Payments of Interest .......................    13
SECTION 2.8. Registration, Transfer and Exchange .........................    14
SECTION 2.9. Mutilated, Defaced, Destroyed, Lost
                  and Stolen Securities ..................................    17
SECTION 2.10.Cancellation of Securities;
                  Destruction Thereof ....................................    18
SECTION 2.11.Temporary Securities ........................................    18


                                  ARTICLE THREE

                     COVENANTS OF THE ISSUER AND THE TRUSTEE


SECTION 3.1. Payment of Principal and Interest ...........................    19
SECTION 3.2. Offices for Payments, etc ...................................    19
SECTION 3.3. Appointment to Fill a Vacancy in
                  Office of Trustee ......................................    20
SECTION 3.4. Paying Agents ...............................................    20
SECTION 3.5. Certificate of the Issuer ...................................    21
SECTION 3.6. Securityholders' Lists ......................................    21
SECTION 3.7. Reports by the Issuer .......................................    21


                                       ii
<PAGE>   4
                                                                            Page
                                                                            ----


SECTION 3.8. Reports by the Trustee ......................................    22
SECTION 3.9. Limitations on Liens ........................................    22
SECTION 3.10. Limitation on Sale and Lease-Back ..........................    25
SECTION 3.11. Limitations on Subsidiary
                  Indebtedness ...........................................    25


                                  ARTICLE FOUR

                   REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS
                               ON EVENT OF DEFAULT


SECTION 4.1. Event of Default Defined; Acceleration
                  of Maturity; Waiver of Default .........................    29
SECTION 4.2. Collection of Indebtedness by Trustee;
                  Trustee May Prove Debt .................................    32
SECTION 4.3. Application of Proceeds .....................................    35
SECTION 4.4. Suits for Enforcement .......................................    36
SECTION 4.5. Restoration of Rights on Abandonment
                  of Proceedings .........................................    36
SECTION 4.6. Limitations on Suits by
                  Securityholders ........................................    36
SECTION 4.7. Unconditional Right of
                  Securityholders to Institute
                  Certain Suits ..........................................    37
SECTION 4.8. Powers and Remedies Cumulative;
                  Delay or Omission Not Waiver of
                  Default ................................................    37
SECTION 4.9. Control by Securityholders ..................................    38
SECTION 4.10. Waiver of Past Defaults ....................................    39
SECTION 4.11. Trustee to Give Notice of Default,
                  But May Withhold in Certain
                  Circumstances ..........................................    39
SECTION 4.12. Right of Court to Require Filing
                  of Undertaking to Pay Costs ............................    40


                                  ARTICLE FIVE

                             CONCERNING THE TRUSTEE


SECTION 5.1. Duties and Responsibilities of the
                  Trustee; During Default; Prior to
                  Default ................................................    40
SECTION 5.2. Certain Rights of the Trustee ...............................    42
SECTION 5.3. Trustee Not Responsible for Recitals,
                  Disposition of Securities or
                  Application of Proceeds Thereof ........................    44
SECTION 5.4. Trustee and Agents May Hold


                                       iii
<PAGE>   5
                                                                            Page
                                                                            ----


                  Securities; Collections, etc ...........................    44
SECTION 5.5. Moneys Held by Trustee ......................................    44
SECTION 5.6. Compensation and Indemnification
                  of Trustee and Its Prior Claim .........................    44
SECTION 5.7. Right of Trustee to Rely on
                  Officers' Certificate, etc .............................    45
SECTION 5.8. Persons Eligible for Appointment
                  as Trustee .............................................    45
SECTION 5.9  Resignation and Removal; Appointment
                  of Successor Trustee ...................................    45
SECTION 5.10.Acceptance of Appointment by
                  Successor Trustee ......................................    47
SECTION 5.11.Merger, Conversion, Consolidation or
                  Succession to Business of Trustee ......................    48


                                   ARTICLE SIX

                         CONCERNING THE SECURITYHOLDERS


SECTION 6.1. Evidence of Action Taken by
                  Securityholders ........................................    49
SECTION 6.2. Proof of Execution of Instruments and
                  of Holding of Securities;  Record
                  Date ...................................................    49
SECTION 6.3. Holders to Be Treated as Owners .............................    50
SECTION 6.4. Securities Owned by Issuer Deemed Not
                  Outstanding ............................................    50
SECTION 6.5. Right of Revocation of Action Taken .........................    51


                                  ARTICLE SEVEN

                             SUPPLEMENTAL INDENTURES


SECTION 7.1. Supplemental Indentures Without
                  Consent of Securityholders .............................    52
SECTION 7.2. Supplemental Indentures With Consent
                  of Securityholders .....................................    53
SECTION 7.3. Effect of Supplemental Indenture ............................    54
SECTION 7.4. Documents to Be Given to Trustee ............................    55
SECTION 7.5. Notation on Securities in Respect of
                  Supplemental Indentures ................................    55


                                       iv
<PAGE>   6
                                                                            Page
                                                                            ----


                                  ARTICLE EIGHT

                    CONSOLIDATION, MERGER, SALE OR CONVEYANCE


SECTION 8.1. Issuer may Consolidate, etc., on
                  Certain Terms ..........................................    55
SECTION 8.2. Successor Corporation Substituted ...........................    56
SECTION 8.3. Opinion of Counsel to Trustee ...............................    56


                                  ARTICLE NINE

                    SATISFACTION AND DISCHARGE OF INDENTURE;
                                UNCLAIMED MONEYS


SECTION 9.1. Satisfaction and Discharge of
                  Indenture ..............................................    57
SECTION 9.2. Application by Trustee of Funds
                  Deposited for Payment of Securities ....................    58
SECTION 9.3. Repayment of Moneys Held by Paying
                  Agent ..................................................    58
SECTION 9.4. Return of Moneys Held By Trustee and
                  Paying Agent Unclaimed for Three
                  Years ..................................................    58


                                   ARTICLE TEN

                            MISCELLANEOUS PROVISIONS


SECTION 10.1. Incorporators, Stockholders, Officers
                  and Directors of Issuer Exempt from
                  Individual Liability ...................................    59
SECTION 10.2. Provisions of Indenture for the Sole
                  Benefit of Parties and Securityholders .................    59
SECTION 10.3. Successors and Assigns of Issuer
                  Bound by Indenture .....................................    59
SECTION 10.4. Notices and Demands on Issuer,
                  Trustee and Securityholders ............................    60
SECTION 10.5. Officers' Certificates and Opinions
                  of Counsel; Statements to Be Contained Therein .........    60
SECTION 10.6. Payments Due on Saturdays, Sundays
                  and Holidays ...........................................    62


                                        v
<PAGE>   7
                                                                            Page
                                                                            ----
SECTION 10.7. Conflict of Any Provision of
                  Indenture with Trust Indenture
                  Act of 1939 ............................................    62
SECTION 10.8. Ohio Law to Govern .........................................    62
SECTION 10.9. Counterparts ...............................................    62
SECTION 10.10. Effect of Headings ........................................    62


                                 ARTICLE ELEVEN

                   REDEMPTION OF SECURITIES AND SINKING FUNDS


SECTION 11.1. Applicability of Article ...................................    62
SECTION 11.2. Notice of Redemption; Partial
                  Redemptions ............................................    63
SECTION 11.3. Payment of Securities Called for
                  Redemption .............................................    64
SECTION 11.4. Exclusion of Certain Securities from
                  Eligibility for Selection for
                  Redemption ..............................................   65
SECTION 11.5. Mandatory and Optional Sinking
                  Funds ..................................................    65


TESTIMONIUM ..............................................................    69

SIGNATURES ...............................................................    69

ACKNOWLEDGMENTS .......................................................... 70-71


                                       vi
<PAGE>   8
            THIS INDENTURE, dated as of April 18, 1997 between CARDINAL HEALTH,
INC., an Ohio corporation (the "Issuer"), and BANK ONE, COLUMBUS, NA, a national
banking association duly incorporated and existing under the laws of the United
States of America (the "Trustee"),

                              W I T N E S S E T H:


            WHEREAS, the Issuer has duly authorized the issue from time to time
of its unsecured debentures, notes or other evidences of indebtedness to be
issued in one or more series (the "Securities") up to such principal amount or
amounts as may from time to time be authorized in accordance with the terms of
this Indenture and to provide, among other things, for the authentication,
delivery and administration thereof, the Issuer has duly authorized the
execution and delivery of this Indenture; and

            WHEREAS, all things necessary to make this Indenture a valid
indenture and agreement according to its terms have been done;

            NOW, THEREFORE:

            In consideration of the premises and the purchases of the Securities
by the holders thereof, the Issuer and the Trustee mutually covenant and agree
for the equal and proportionate benefit of the respective holders from time to
time of the Securities as follows:


                                   ARTICLE ONE

                                   DEFINITIONS

            SECTION 1.1 Certain Terms Defined. The following terms (except as
otherwise expressly provided or unless the context otherwise clearly requires)
for all purposes of this Indenture and of any indenture supplemental hereto
shall have the respective meanings specified in this Section. All other terms
used in this Indenture that are defined in the Trust Indenture Act of 1939 or
the definitions of which in the Securities Act of 1933 are referred to in the
Trust Indenture Act of 1939, including terms defined therein by reference to the
Securities Act of 1933 (except as herein otherwise expressly provided or unless
the context otherwise clearly requires), shall have the meanings assigned to
such
<PAGE>   9
terms in said Trust Indenture Act and in said Securities Act as in force at the
date of this Indenture. All accounting terms used herein and not expressly
defined shall have the meanings assigned to such terms in accordance with
generally accepted accounting principles, and the term "generally accepted
accounting principles" means such accounting principles as are generally
accepted at the time of any computation. The words "herein", "hereof" and
"hereunder" and other words of similar import refer to this Indenture as a whole
and not to any particular Article, Section or other subdivision. The terms
defined in this Article have the meanings assigned to them in this Article and
include the plural as well as the singular.

            "Attributable Debt" when used in connection with a sale and
lease-back transaction shall mean, as of any particular time, the lesser of (a)
the fair value of the assets subject to such arrangement or (b) the aggregate of
present values (discounted at a rate per annum equal to the weighted average
Yield to Maturity of the Securities of all series then outstanding and
compounded semi-annually) of the obligations of the Issuer or any Consolidated
Subsidiary for net rental payments during the remaining term of all leases
(including any period for which such lease has been extended or may, at the
option of the lessor, be extended). The term "net rental payments" under any
lease of any period shall mean the sum of the rental and other payments required
to be paid in such period by the lessee thereunder, not including, however, any
amounts required to be paid by such lessee (whether or not designated as rental
or additional rental) on account of maintenance and repairs, reconstruction,
insurance, taxes, assessments, water rates or similar charges required to be
paid by such lessee thereunder or any amounts required to be paid by such lessee
thereunder contingent upon the amount of sales, maintenance and repairs,
reconstruction, insurance, taxes, assessments, water rates or similar charges.

            "Board of Directors" means either the Board of Directors of the
Issuer or any committee of such Board duly authorized to act hereunder.

            "Business Day" means, with respect to any Security, a day that in
the city (or in any of the cities, if more than one) in which amounts are
payable, as specified in the form of such Security, is not a day on which
banking institutions are authorized by law or regulation to close.

            "Commission" means the Securities and Exchange Commission, as from
time to time constituted, created under the Securities Exchange Act of 1934, or
if at any time after


                                        2
<PAGE>   10
the execution and delivery of this Indenture such Commission is not existing and
performing the duties now assigned to it under the Trust Indenture Act, then the
body performing such duties on such date.

            "Consolidated Net Tangible Assets" means the aggregate amount of
assets after deducting therefrom (a) all current liabilities (excluding any
thereof constituting Funded Indebtedness by reason of being renewable or
extendible) and (b) all goodwill, tradenames, trademarks, patents, unamortized
debt discount and expense and other like intangibles, all as set forth on the
most recent balance sheet of the Issuer and its Consolidated Subsidiaries and
computed in accordance with generally accepted accounting principles.

            "Consolidated Subsidiary" means any Subsidiary substantially all the
property of which is located, and substantially all the operations of which are
conducted, in the United States of America whose financial statements are
consolidated with those of the Issuer in accordance with generally accepted
accounting principles.

            "Corporate Trust Office" means the office of the Trustee at which
the corporate trust business of the Trustee shall, at any particular time, be
principally administered, which office is, at the date as of which this
Indenture is dated, located at 100 East Broad Street, Columbus, Ohio
43271.

            "Depositary" means, with respect to the Securities of any series
issuable or issued in the form of one or more Global Securities, the Person
designated as Depositary by the Issuer pursuant to Section 2.3 until a successor
Depositary shall have become such pursuant to the applicable provisions of this
Indenture, and thereafter "Depositary" shall mean or include each Person who is
then a Depositary hereunder, and if at any time there is more than one such
Person, "Depositary" as used with respect to the Securities of any such series
shall mean the Depositary with respect to the Global Securities of that series.

            "Event of Default" means any event or condition specified as such in
Section 4.1 which shall have continued for the period of time, if any, therein
designated.

            "Exempted Debt" means the sum of the following items outstanding as
of the date Exempted Debt is to be determined: (a) Indebtedness of the Issuer
and its Consolidated Subsidiaries incurred after the date of this Indenture and
secured by liens not permitted to be created or assumed pursuant to Section 3.9
of the Indenture, and (b)


                                   3
<PAGE>   11
Attributable Debt of the Issuer and its Consolidated Subsidiaries in respect of
every sale and lease-back transaction entered into after the date of this
Indenture, other than those leases expressly permitted by Section 3.10.

            "Financing Subsidiary" means any Subsidiary, including their
Subsidiaries, engaged in one or more of the following activities;

                  (1) the business of making loans or advances, extending credit
            or providing financial accommodations (including leasing new or used
            products) to other Persons;

                  (2) the business of purchasing notes, accounts receivable
            (whether or not payable in installments), conditional sale contracts
            or other obligations of other Persons originating in sales at
            wholesale or retail; or

                  (3) any other business as may be reasonably incidental to
            those described in (1) and (2) above, including the ownership and
            use of property in connection therewith.

            "Funded Indebtedness" means all Indebtedness having a maturity of
more than 12 months from the date as of which the amount thereof is to be
determined or having a maturity of less than 12 months but by its terms being
renewable or extendible beyond 12 months from such date at the option of the
borrower.

            "Global Security" means a Security evidencing all or a part of a
series of Securities, issued to the Depositary for such series in accordance
with Section 2.4, and bearing the legend prescribed in Section 2.4.

            "Holder", "holder of Securities", "Securityholder" or other similar
terms mean the registered holder of any Security.

            "Indebtedness" means all items classified as indebtedness on the
most recently available balance sheet of the Issuer and its Consolidated
Subsidiaries, in accordance with generally accepted accounting principles.

            "Indenture" means this instrument as originally executed and
delivered or, if amended or supplemented as herein provided, as so amended or
supplemented or both, and shall include the forms and terms of particular series
of Securities established as contemplated hereunder.


                                        4
<PAGE>   12
            "Interest" means, when used with respect to non-interest bearing
Securities, interest payable after maturity.

            "Issuer" means (except as otherwise provided in Article Five)
Cardinal Health, Inc., an Ohio corporation, and, subject to Article Eight, its
successors and assigns.

            "Officers' Certificate" means a certificate signed by the chairman
of the Board of Directors or the president or any vice president and by the
treasurer or the secretary or any assistant secretary of the Issuer and
delivered to the Trustee. Each such certificate shall comply with Section 314 of
the Trust Indenture Act of 1939 and include the statements provided for in
Section 10.5.

            "Opinion of Counsel" means an opinion in writing signed by legal
counsel who may be an employee of or counsel to the Issuer and who shall be
satisfactory to the Trustee. Each such opinion shall comply with Section 314 of
the Trust Indenture Act of 1939 and include the statements provided for in
Section 10.5, if and to the extent required hereby.

            "Original Issue Discount Security" means any Security that provides
for an amount less than the principal amount thereof to be due and payable upon
a declaration of acceleration of the maturity thereof pursuant to Section 4.1.

            "Outstanding", when used with reference to Securities, shall,
subject to the provisions of Section 6.4, mean, as of any particular time, all
Securities authenticated and delivered by the Trustee under this Indenture,
except

            (a)  Securities theretofore cancelled by the Trustee or delivered to
      the Trustee for cancellation;

            (b) Securities, or portions thereof, for the payment or redemption
      of which moneys in the necessary amount shall have been deposited in trust
      with the Trustee or with any paying agent (other than the Issuer) or shall
      have been set aside, segregated and held in trust by the Issuer for the
      holders of such Securities (if the Issuer shall act as its own paying
      agent), provided that if such Securities, or portions thereof, are to be
      redeemed prior to the maturity thereof, notice of such redemption shall
      have been given as herein provided, or provision satisfactory to the
      Trustee shall have been made for giving such notice; and


                                        5
<PAGE>   13
            (c) Securities in substitution for which other Securities shall have
      been authenticated and delivered, or which shall have been paid, pursuant
      to the terms of Section 2.9 (except with respect to any such Security as
      to which proof satisfactory to the Trustee is presented that such Security
      is held by a person in whose hands such Security is a legal, valid and
      binding obligation of the Issuer).

            In determining whether the holders of the requisite principal amount
of Outstanding Securities of any or all series have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, the principal
amount of an Original Issue Discount Security that shall be deemed to be
Outstanding for such purposes shall be the amount of the principal thereof that
would be due and payable as of the date of such determination upon a declaration
of acceleration of the maturity thereof pursuant to Section 4.1.

            "Person" means any individual, corporation, partnership, joint
venture, association, joint stock company, trust, unincorporated organization or
government or any agency or political subdivision thereof.

            "Principal" whenever used with reference to the Securities or any
Security or any portion thereof, shall be deemed to include "and premium, if
any".

            "Rate Hedging Obligations" means any and all obligations of any
Person, whether absolute or contingent and howsoever and whensoever created,
arising, evidenced or acquired (including all renewals, extensions and
modifications thereof and substitutions therefor), under:

                  (1) any and all agreements, devices or arrangements designed
            to protect at least one of the parties thereto from the fluctuations
            of interest rates, exchange rates or forward rates applicable to
            such party's assets, liabilities or exchange transactions,
            including, but not limited to, Dollar-denominated or cross-currency
            interest rate exchange agreements, forward currency exchange
            agreements, interest rate cap or collar protection agreements,
            forward rate currency or interest rate options, puts, warrants and
            those commonly known as interest rate "swap" agreements; and


                                        6
<PAGE>   14
                  (2) any and all cancellations, buybacks, reversals,
            terminations or assignments of any of the items in (1) above.

            "Responsible Officer" when used with respect to the Trustee means
the chairman of the board of directors, any vice chairman of the board of
directors, the chairman of the trust committee, the chairman of the executive
committee, any vice chairman of the executive committee, the president, any vice
president, the cashier, the secretary, the treasurer, any trust officer, any
assistant trust officer, any assistant vice president, any assistant cashier,
any assistant secretary, any assistant treasurer, or any other officer or
assistant officer of the Trustee customarily performing functions similar to
those performed by the persons who at the time shall be such officers,
respectively, or to whom any corporate trust matter is referred because of his
knowledge of and familiarity with the particular subject.

            "Restricted Subsidiary" means a "significant subsidiary" (as defined
in Article 1, Rule 1-02 of Regulation S-X, promulgated under the Securities Act
of 1933 as amended from time to time), including its Subsidiaries.

            "Security" or "Securities" has the meaning stated in the first
recital of this Indenture, or, as the case may be, Securities that have been
authenticated and delivered under this Indenture.

            "Senior Funded Indebtedness" means any Funded Indebtedness of the
Issuer that is not subordinated in right of payment to any other Indebtedness of
the Issuer.

            "Subsidiary" means any corporation of which at least a majority of
the outstanding stock having the voting power to elect a majority of the Board
of Directors of such corporation (irrespective of whether or not at the time
stock of any other class or classes of such corporation shall have or might have
voting power by reason of the happening of any contingency) is at the time
directly or indirectly owned or controlled by the Issuer, or by one or more of
the Subsidiaries, or by the Issuer and one or more Subsidiaries.

            "Trustee" means the Person identified as "Trustee" in the first
paragraph hereof and, subject to the provisions of Article Five, shall also
include any successor trustee.

            "Trust Indenture Act of 1939" (except as otherwise provided in
Sections 7.1 and 7.2) means the Trust Indenture


                                        7
<PAGE>   15
Act of 1939 as in force at the date as of which this Indenture was originally
executed.

            "vice president" when used with respect to the Issuer or the
Trustee, means any vice president, whether or not designated by a number or a
word or words added before or after the title of "vice president".

            "Yield to Maturity" means the yield to maturity on a series of
Securities, calculated at the time of issuance of such series, or, if
applicable, at the most recent redetermination of interest on such series, and
calculated in accordance with accepted financial practice.


                                   ARTICLE TWO

                                   SECURITIES

            SECTION 2.1 Forms Generally. The Securities of each series shall be
substantially in such form (not inconsistent with this Indenture) as shall be
established by or pursuant to a resolution of the Board of Directors or in one
or more indentures supplemental hereto, in each case with such appropriate
insertions, omissions, substitutions and other variations as are required or
permitted by this Indenture and may have imprinted or otherwise reproduced
thereon such legend or legends, not inconsistent with the provisions of this
Indenture, as may be required to comply with any law or with any rules or
regulations pursuant thereto, or with any rules of any securities exchange or to
conform to general usage, all as may be determined by the officers executing
such Securities, as evidenced by their execution of the Securities.

            The definitive Securities shall be printed, lithographed or engraved
on steel engraved borders or may be produced in any other manner, all as
determined by the officers executing such Securities, as evidenced by their
execution of such Securities.

            SECTION 2.2 Form of Trustee's Certificate of Authentication. The
Trustee's certificate of authentication on all Securities shall be in
substantially the following form:

            This is one of the Securities of the series designated herein and
referred to in the within-mentioned Indenture.


                                        8
<PAGE>   16
                                    BANK ONE,COLUMBUS, NA,
                                          as Trustee


                                    By______________________
                                       Authorized Officer



            SECTION 2.3 Amount Unlimited; Issuable in Series. The aggregate
principal amount of Securities which may be authenticated and delivered under
this Indenture is unlimited.

            The Securities may be issued in one or more series. There shall be
established in or pursuant to a resolution of the Board of Directors and set
forth in an Officers' Certificate, or established in one or more indentures
supplemental hereto, prior to the issuance of Securities of any series,

            (1) the title of the Securities of the series (which shall
      distinguish the Securities of the series from all other Securities);

            (2) any limit upon the aggregate principal amount of the Securities
      of the series that may be authenticated and delivered under this Indenture
      (except for Securities authenticated and delivered upon registration of
      transfer of, or in exchange for, or in lieu of, other Securities of the
      series pursuant to Section 2.8, 2.9, 2.11 or 11.3);

            (3) the date or dates on which the principal of the Securities of
      the series is payable;

            (4) the rate or rates at which the Securities of the series shall
      bear interest, if any, or the method by which such rate shall be
      determined, the date or dates from which such interest shall accrue, the
      interest payment dates on which such interest shall be payable and the
      record dates for the determination of Holders to whom interest is payable;

            (5) the place or places where the principal of and any interest on
      Securities of the series shall be payable (if other than as provided in
      Section 3.2);

            (6) the price or prices at which, the period or periods within which
      and the terms and conditions upon which Securities of the series may be
      redeemed, in


                                        9
<PAGE>   17
      whole or in part, at the option of the Issuer, pursuant to any sinking 
      fund or otherwise;

            (7) the obligation, if any, of the Issuer to redeem, purchase or
      repay Securities of the series pursuant to any sinking fund or analogous
      provisions or at the option of a Holder thereof and the price or prices at
      which and the period or periods within which and the terms and conditions
      upon which Securities of the series shall be redeemed, purchased or
      repaid, in whole or in part, pursuant to such obligation;

            (8) if other than denominations of $1,000 and any multiple thereof,
      the denominations in which Securities of the series shall be issuable;

            (9) if other than the principal amount thereof, the portion of the
      principal amount of Securities of the series which shall be payable upon
      declaration of acceleration of the maturity thereof pursuant to Section
      4.1 or provable in bankruptcy pursuant to Section 4.2;

            (10) any other terms of the series (which terms shall not be
      inconsistent with the provisions of this Indenture);

            (11) any trustees, authenticating or paying agents, transfer agents
      or registrars or any other agents with respect to the Securities of such
      series;

            (12) whether the Securities of the series or any portion thereof
      will be issuable as Global Securities; and

            (13) if the Securities of the series are issuable in whole or in
      part as one or more Global Securities, the identity of the Depositary for
      such Global Security or Securities.

            All Securities of any one series shall be substantially identical
except as to denomination and except as may otherwise be provided in or pursuant
to such resolution of the Board of Directors or in any such indenture
supplemental hereto.

            SECTION 2.4 Authentication and Delivery of Securities. At any time
and from time to time after the execution and delivery of this Indenture, the
Issuer may deliver Securities of any series executed by the Issuer to the
Trustee for authentication, and the Trustee shall


                                       10
<PAGE>   18
thereupon authenticate and deliver such Securities to or upon the written order
of the Issuer, signed by both (a) the Chairman of its Board of Directors, or any
vice chairman of its Board of Directors, or its president or any vice president
and (b) by its treasurer or any assistant treasurer, without any further action
by the Issuer. In authenticating such Securities and accepting the additional
responsibilities under this Indenture in relation to such Securities the Trustee
shall be entitled to receive, and (subject to Section 5.1) shall be fully
protected in relying upon:

            (1) a certified copy of any resolution or resolutions of the Board
      of Directors authorizing the action taken pursuant to the resolution or
      resolutions delivered under clause (2) below;

            (2) a copy of any resolution or resolutions of the Board of
      Directors relating to such series, in each case certified by the Secretary
      or an Assistant Secretary of the Issuer;

            (3) an executed supplemental indenture, if any;

            (4) an Officers' Certificate setting forth the form and terms of the
      Securities as required pursuant to Sections 2.1 and 2.3, respectively and
      prepared in accordance with Section 10.5;

            (5) an Opinion of Counsel, prepared in accordance with Section 10.5,
      to the effect that

                  (a) the form or forms and terms of such Securities have been
            established by or pursuant to a resolution of the Board of Directors
            or by a supplemental indenture as permitted by Sections 2.1 and 2.3
            in conformity with the provisions of this Indenture;

                  (b) such Securities, when authenticated and delivered by the
            Trustee and issued by the Issuer in the manner and subject to any
            conditions specified in such Opinion of Counsel, will constitute
            valid and binding obligations of the Issuer;

                  (c) all laws and requirements in respect of the execution and
            delivery by the Issuer of the Securities have been complied with;
            and


                                       11
<PAGE>   19
                  (d) covering such other matters as the Trustee may reasonably
            request.

            The Trustee shall have the right to decline to authenticate and
deliver any Securities under this Section if the Trustee, being advised by
counsel, determines that such action may not lawfully be taken by the Issuer or
if the Trustee in good faith by its board of directors or board of trustees,
executive committee, or a trust committee of directors or trustees or
Responsible Officers shall determine that such action would expose the Trustee
to personal liability to existing Holders.

            If the Issuer shall establish pursuant to Section 2.3 that the
Securities of a series or a portion thereof are to be issued in the form of one
or more Global Securities, then the Issuer shall execute and the Trustee shall
authenticate and deliver one or more Global Securities that (i) shall represent
and shall be denominated in an amount equal to the aggregate principal amount of
all of the Securities of such series issued in such form and not yet cancelled,
(ii) shall be registered in the name of the Depositary for such Global Security
or Securities or the nominee of such Depositary, (iii) shall be delivered by the
Trustee to such Depositary or its custodian or pursuant to such Depositary's
instructions and (iv) shall bear a legend substantially to the following effect:
"Unless and until it is exchanged in whole or in part for Securities in
definitive registered form, this Security may not be transferred except as a
whole by the Depositary to a nominee of the Depositary or by a nominee of the
Depositary to the Depositary or another nominee of the Depositary or by the
Depositary or any such nominee to a successor Depositary or a nominee of such
successor Depositary."

            SECTION 2.5 Execution of Securities. The Securities shall be signed
on behalf of the Issuer by both (a) the chairman of its Board of Directors or
any vice chairman of its Board of Directors or its president or any vice
president and (b) by its treasurer or any assistant treasurer or its secretary
or any assistant secretary. Such signatures may be the manual or facsimile
signatures of the present or any future such officers. Typographical and other
minor errors or defects in any such reproduction of any such signature shall not
affect the validity or enforceability of any Security that has been duly
authenticated and delivered by the Trustee.

            In case any officer of the Issuer who shall have signed any of the
Securities shall cease to be such officer before the Security so signed shall be
authenticated and


                                       12
<PAGE>   20
delivered by the Trustee or disposed of by the Issuer, such Security
nevertheless may be authenticated and delivered or disposed of as though the
person who signed such Security had not ceased to be such officer of the Issuer;
and any Security may be signed on behalf of the Issuer by such persons as, at
the actual date of the execution of such Security, shall be the proper officers
of the Issuer, although at the date of the execution and delivery of this
Indenture any such person was not such an officer.

            SECTION 2.6 Certificate of Authentication. Only such Securities as
shall bear thereon a certificate of authentication substantially in the form
hereinbefore recited, executed by the Trustee by the manual signature of one of
its authorized officers, shall be entitled to the benefits of this Indenture or
be valid or obligatory for any purpose. Such certificate by the Trustee upon any
Security executed by the Issuer shall be conclusive evidence that the Security
so authenticated has been duly authenticated and delivered hereunder and that
the holder is entitled to the benefits of this Indenture.

            SECTION 2.7 Denomination and Date of Securities; Payments of
Interest. The Securities shall be issuable as registered securities without
coupons and in denominations as shall be specified as contemplated by Section
2.3. In the absence of any such specification with respect to the Securities of
any series, the Securities of such series shall be issuable in denominations of
$1,000 and any multiple thereof. The Securities shall be numbered, lettered, or
otherwise distinguished in such manner or in accordance with such plan as the
officers of the Issuer executing the same may determine with the approval of the
Trustee as evidenced by the execution and authentication thereof.

            Each Security shall be dated the date of its authentication, shall
bear interest, if any, from the date and shall be payable on the dates, in each
case, which shall be specified as contemplated by Section 2.3.

            The person in whose name any Security of any series is registered at
the close of business on any record date applicable to a particular series with
respect to any interest payment date for such series shall be entitled to
receive the interest, if any, payable on such interest payment date
notwithstanding any transfer or exchange of such Security subsequent to the
record date and prior to such interest payment date, except if and to the extent
the Issuer shall default in the payment of the interest due on such interest
payment date for such series, in which case


                                       13
<PAGE>   21
such defaulted interest shall be paid to the persons in whose names Outstanding
Securities for such series are registered at the close of business on a
subsequent record date (which shall be not less than five Business Days prior to
the date of payment of such defaulted interest) established by notice given by
mail by or on behalf of the Issuer to the holders of Securities not less than 15
days preceding such subsequent record date. The term "record date" as used with
respect to any interest payment date (except a date for payment of defaulted
interest) shall mean the date specified as such in the terms of the Securities
of any particular series, or, if no such date is so specified, if such interest
payment date is the first day of a calendar month, the fifteenth day of the next
preceding calendar month or, if such interest payment date is the fifteenth day
of a calendar month, the first day of such calendar month, whether or not such
record date is a Business Day.

            SECTION 2.8 Registration, Transfer and Exchange. The Issuer will
keep or cause to be kept at each office or agency to be maintained for the
purpose as provided in Section 3.2 a register or registers in which, subject to
such reasonable regulations as it may prescribe, it will register, and will
register the transfer of, Securities as in this Article provided. Such register
shall be in written form in the English language or in any other form capable of
being converted into such form within a reasonable time. At all reasonable times
such register or registers shall be open for inspection by the Trustee.

            Upon due presentation for registration of transfer of any Security
of any series at any such office or agency to be maintained for the purpose as
provided in Section 3.2, the Issuer shall execute and the Trustee shall
authenticate and deliver in the name of the transferee or transferees a new
Security or Securities of the same series in authorized denominations for a like
aggregate principal amount.

            Any Security or Securities of any series may be exchanged for a
Security or Securities of the same series in other authorized denominations, in
an equal aggregate principal amount. Securities of any series to be exchanged
shall be surrendered at any office or agency to be maintained by the Issuer for
the purpose as provided in Section 3.2, and the Issuer shall execute and the
Trustee shall authenticate and deliver in exchange therefor the Security or
Securities of the same series which the Securityholder making the exchange shall
be entitled to receive, bearing numbers not contemporaneously outstanding.


                                       14
<PAGE>   22
            All Securities presented for registration of transfer, exchange,
redemption or payment shall (if so required by the Issuer or the Trustee) be
duly endorsed by, or be accompanied by a written instrument or instruments of
transfer in form satisfactory to the Issuer and the Trustee duly executed by,
the holder or his attorney duly authorized in writing.

            The Issuer may require payment of a sum sufficient to cover any tax
or other governmental charge that may be imposed in connection with any exchange
or registration of transfer of Securities. No service charge shall be made for
any such transaction.

            Notwithstanding any other provision of this Section 2.8, unless and
until it is exchanged in whole or in part for Securities in definitive
registered form, a Global Security representing all or a portion of the
Securities of a series may not be transferred except as a whole by the
Depositary for such series to a nominee of such Depositary or by a nominee of
such Depositary to such Depositary or another nominee of such Depositary or by
such Depositary or any such nominee to a successor Depositary for such series or
a nominee of such successor Depositary.

            If at any time the Depositary for any Global Securities of any
series notifies the Issuer that it is unwilling or unable to continue as
Depositary for such Global Securities or if at any time the Depositary for such
Global Securities shall no longer be eligible under applicable law, the Issuer
shall appoint a successor Depositary eligible under applicable law with respect
to such Global Securities. If a successor Depositary eligible under applicable
law for such Global Securities is not appointed by the Issuer within 90 days
after the Issuer receives such notice or becomes aware of such ineligibility,
the Issuer will execute, and the Trustee, upon receipt of the Issuer's order for
the authentication and delivery of definitive Securities of such series and
tenor, will authenticate and deliver Securities of such series and tenor, in any
authorized denominations, in an aggregate principal amount equal to the
principal amount of such Global Securities, in exchange for such Global
Securities.

            The Issuer may at any time and in its sole discretion determine that
any Global Securities of any series shall no longer be maintained in global
form. In such event the Issuer will execute, and the Trustee, upon receipt of
the Issuer's order for the authentication and delivery of definitive Securities
of such series and tenor, will authenticate and deliver, Securities of such
series and


                                       15
<PAGE>   23
tenor in any authorized denominations, in an aggregate principal amount equal to
the principal amount of such Global Securities, in exchange for such Global
Securities.

            Any time the Securities of any series are not in the form of Global
Securities pursuant to the preceding two paragraphs, the Issuer agrees to supply
the Trustee with a reasonable supply of certificated Securities without the
legend required by Section 2.4 and the Trustee agrees to hold such Securities in
safekeeping until authenticated and delivered pursuant to the terms of this
Indenture.

            If established by the Issuer pursuant to Section 2.3 with respect to
any Global Security, the Depositary for such Global Security may surrender such
Global Security in exchange in whole or in part for Securities of the same
series and tenor in definitive form on such terms as are acceptable to the
Issuer and such Depositary. Thereupon, the Issuer shall execute, and the Trustee
shall authenticate and deliver, without service charge,

                  (i) to the Person specified by such Depositary new Securities
            of the same series and tenor, of any authorized denominations as
            requested by such Person, in an aggregate principal amount equal to
            and in exchange for such Person's beneficial interest in the Global
            Security; and

                  (ii) to such Depositary a new Global Security in a
            denomination equal to the difference, if any, between the principal
            amount of the surrendered Global Security and the aggregate
            principal amount of Securities authenticated and delivered pursuant
            to clause (i) above.

            Securities issued in exchange for a Global Security pursuant to this
Section 2.8 shall be registered in such names and in such authorized
denominations as the Depositary for such Global Security, pursuant to
instructions from its direct or indirect participants or otherwise, shall
instruct the Trustee or an agent of the Issuer or the Trustee. The Trustee or
such agent shall deliver such Securities to or as directed by the Persons in
whose names such Securities are so registered.

            The Issuer shall not be required to exchange or register a transfer
of (a) any Securities of any series for a period of 15 days next preceding the
first mailing of notice of redemption of Securities of such series to be
redeemed, or (b) any Securities selected, called or being


                                       16
<PAGE>   24
called for redemption except, in the case of any Security where public notice
has been given that such Security is to be redeemed in part, the portion thereof
not so to be redeemed.

            All Securities issued upon any transfer or exchange of Securities
shall be valid obligations of the Issuer, evidencing the same debt, and entitled
to the same benefits under this Indenture, as the Securities surrendered upon
such transfer or exchange.

            SECTION 2.9 Mutilated, Defaced, Destroyed, Lost and Stolen
Securities. In case any temporary or definitive Security shall become mutilated,
defaced or be destroyed, lost or stolen, the Issuer in its discretion may
execute, and upon the written request of any officer of the Issuer, the Trustee
shall authenticate and deliver, a new Security of the same series, bearing a
number not contemporaneously outstanding, in exchange and substitution for the
mutilated or defaced Security, or in lieu of and substitution for the Security
so destroyed, lost or stolen. In every case the applicant for a substitute
Security shall furnish to the Issuer and to the Trustee and any agent of the
Issuer or the Trustee such security or indemnity as may be required by them to
indemnify and defend and to save each of them harmless and, in every case of
destruction, loss or theft, evidence to their satisfaction of the destruction,
loss or theft of such Security and of the ownership thereof.

            Upon the issuance of any substitute Security, the Issuer may require
the payment of a sum sufficient to cover any tax or other governmental charge
that may be imposed in relation thereto and any other expenses (including the
fees and expenses of the Trustee) connected therewith. In case any Security
which has matured or is about to mature or has been called for redemption in
full shall become mutilated or defaced or be destroyed, lost or stolen, the
Issuer may instead of issuing a substitute Security, pay or authorize the
payment of the same (without surrender thereof except in the case of a mutilated
or defaced Security), if the applicant for such payment shall furnish to the
Issuer and to the Trustee and any agent of the Issuer or the Trustee such
security or indemnity as any of them may require to save each of them harmless,
and, in every case of destruction, loss or theft, the applicant shall also
furnish to the Issuer and the Trustee and any agent of the Issuer or the Trustee
evidence to their satisfaction of the destruction, loss or theft of such
Security and of the ownership thereof.


                                       17
<PAGE>   25
            Every substitute Security of any series issued pursuant to the
provisions of this Section by virtue of the fact that any such Security is
destroyed, lost or stolen shall constitute an additional contractual obligation
of the Issuer, whether or not the destroyed, lost or stolen Security shall be at
any time enforceable by anyone and shall be entitled to all the benefits of (but
shall be subject to all the limitations of rights set forth in) this Indenture
equally and proportionately with any and all other Securities of such series
duly authenticated and delivered hereunder. All Securities shall be held and
owned upon the express condition that, to the extent permitted by law, the
foregoing provisions are exclusive with respect to the replacement or payment of
mutilated, defaced or destroyed, lost or stolen Securities and shall preclude
any and all other rights or remedies notwithstanding any law or statute existing
or hereafter enacted to the contrary with respect to the replacement or payment
of negotiable instruments or other securities without their surrender.

            SECTION 2.10 Cancellation of Securities; Destruction Thereof. All
Securities surrendered for payment, redemption, registration of transfer or
exchange, or for credit against any payment in respect of a sinking or analogous
fund, if surrendered to the Issuer or any agent of the Issuer or the Trustee,
shall be delivered to the Trustee for cancellation or, if surrendered to the
Trustee, shall be cancelled by it; and no Securities shall be issued in lieu
thereof except as expressly permitted by any of the provisions of this
Indenture. The Trustee shall destroy cancelled Securities held by it and deliver
a certificate of destruction to the Issuer. If the Issuer shall acquire any of
the Securities, such acquisition shall not operate as a redemption or
satisfaction of the indebtedness represented by such Securities unless and until
the same are delivered to the Trustee for cancellation.

            SECTION 2.11 Temporary Securities. Pending the preparation of
definitive Securities for any series, the Issuer may execute and the Trustee
shall authenticate and deliver temporary Securities for such series (printed,
lithographed, typewritten or otherwise reproduced, in each case in form
satisfactory to the Trustee). Temporary Securities of any series shall be
issuable as registered Securities without coupons, of any authorized
denomination, and substantially in the form of the definitive Securities of such
series but with such omissions, insertions and variations as may be appropriate
for temporary Securities, all as may be determined by the Issuer with the
concurrence of the Trustee. Temporary Securities may contain such reference to
any provisions of this Indenture as may be


                                       18
<PAGE>   26
appropriate. Every temporary Security shall be executed by the Issuer and be
authenticated by the Trustee upon the same conditions and in substantially the
same manner, and with like effect, as the definitive Securities. Without
unreasonable delay the Issuer shall execute and shall furnish definitive
Securities of such series and thereupon temporary Securities of such series may
be surrendered in exchange therefor without charge at each office or agency to
be maintained by the Issuer for that purpose pursuant to Section 3.2, and the
Trustee shall authenticate and deliver in exchange for such temporary Securities
of such series a like aggregate principal amount of definitive Securities of the
same series of authorized denominations. Until so exchanged, the temporary
Securities of any series shall be entitled to the same benefits under this
Indenture as definitive Securities of such series.


                                  ARTICLE THREE

                     COVENANTS OF THE ISSUER AND THE TRUSTEE

            SECTION 3.1 Payment of Principal and Interest. The Issuer covenants
and agrees for the benefit of each series of Securities that it will duly and
punctually pay or cause to be paid the principal of, and interest on, each of
the Securities of such series at the place or places, at the respective times
and in the manner provided in such Securities. Unless otherwise specified in
accordance with Section 2.3, each instalment of interest on the Securities of
any series may be paid by mailing checks for such interest payable to or upon
the written order of the holders of Securities entitled thereto as they shall
appear on the registry books of the Issuer.

            SECTION 3.2 Offices for Payments, etc. So long as any of the
Securities remain outstanding, the Issuer will maintain in Columbus, Ohio or in
any other city where the Corporate Trust Office of any successor Trustee may be
located, the following for each series: an office or agency (a) where the
Securities may be presented for payment, (b) where the Securities may be
presented for registration of transfer and for exchange as in this Indenture
provided and (c) where notices and demands to or upon the Issuer in respect of
the Securities or of this Indenture may be served. The Issuer will give to the
Trustee written notice of the location of any such office or agency and of any
change of location thereof. Unless otherwise specified in accordance with
Section 2.3, the Issuer hereby initially designates the Corporate Trust Office
of the Trustee, as the office to be maintained by it for each such purpose. In


                                       19
<PAGE>   27
case the Issuer shall fail to so designate or maintain any such office or agency
or shall fail to give such notice of the location or of any change in the
location thereof, presentations and demands may be made and notices may be
served at the Corporate Trust Office.

            SECTION 3.3 Appointment to Fill a Vacancy in Office of Trustee. The
Issuer, whenever necessary to avoid or fill a vacancy in the office of Trustee,
will appoint, in the manner provided in Section 5.9, a Trustee, so that there
shall at all times be a Trustee with respect to each series of Securities
hereunder.

            SECTION 3.4 Paying Agents. Whenever the Issuer shall appoint a
paying agent other than the Trustee with respect to the Securities of any
series, it will cause such paying agent to execute and deliver to the Trustee an
instrument in which such agent shall agree with the Trustee, subject to the
provisions of this Section,

            (a) that it will hold all sums received by it as such agent for the
      payment of the principal of or interest on the Securities of such series
      (whether such sums have been paid to it by the Issuer or by any other
      obligor on the Securities of such series) in trust for the benefit of the
      holders of the Securities of such series or of the Trustee,

            (b) that it will give the Trustee notice of any failure by the
      Issuer (or by any other obligor on the Securities of such series) to make
      any payment of the principal of or interest on the Securities of such
      series when the same shall be due and payable, and

            (c) pay any such sums so held in trust by it to the Trustee upon the
      Trustee's written request at any time during the continuance of the
      failure referred to in clause (b) above.

            The Issuer will, on or prior to each due date of the principal of or
interest on the Securities of such series, deposit with the paying agent a sum
sufficient to pay such principal or interest so becoming due, and (unless such
paying agent is the Trustee) the Issuer will promptly notify the Trustee of any
failure to take such action.

            If the Issuer shall act as its own paying agent with respect to the
Securities of any Series, it will, on or before each due date of the principal
of or interest on the Securities of such series, set aside, segregate and hold
in trust for the benefit of the holders of the Securities of


                                       20
<PAGE>   28
such series a sum sufficient to pay such principal or interest so becoming due.
The Issuer will promptly notify the Trustee of any failure to take such action.

            Anything in this Section to the contrary notwithstanding, the Issuer
may at any time, for the purpose of obtaining a satisfaction and discharge with
respect to one or more or all series of Securities hereunder, or for any other
reason, pay or cause to be paid to the Trustee all sums held in trust for any
such series by the Issuer or any paying agent hereunder, as required by this
Section, such sums to be held by the Trustee upon the trusts herein contained.

            Anything in this Section to the contrary notwithstanding, the
agreement to hold sums in trust as provided in this Section is subject to the
provisions of Section 9.3 and 9.4.

            SECTION 3.5 Certificate of the Issuer. The Issuer will furnish to
the Trustee on or before March 31 in each year (beginning with 1994) a brief
certificate (which need not comply with Section 10.5) from the principal
executive, financial or accounting officer of the Issuer as to his or her
knowledge of the Issuer's compliance with all conditions and covenants under
this Indenture (such compliance to be determined without regard to any period of
grace or requirement of notice provided under this Indenture).

            SECTION 3.6 Securityholders' Lists. If and so long as the Trustee
shall not be the Security registrar for the Securities of any series, the Issuer
will furnish or cause to be furnished to the Trustee a list in such form as the
Trustee may reasonably require of the names and addresses of the holders of the
Securities of such series pursuant to Section 312 of the Trust Indenture Act of
1939 (a) semi-annually not more than 15 days after each record date for the
payment of interest on such Securities, as hereinabove specified, as of such
record date and on dates to be determined pursuant to Section 2.3 for
non-interest bearing securities in each year, and (b) at such other times as the
Trustee may request in writing, within thirty days after receipt by the Issuer
of any such request as of a date not more than 15 days prior to the time such
information is furnished.

            SECTION 3.7 Reports by the Issuer. The Issuer covenants to file with
the Trustee, within 15 days after the Issuer is required to file the same with
the Commission, copies of the annual reports and of the information,


                                       21
<PAGE>   29
documents, and other reports which the Issuer may be required to file with the
Commission pursuant to Section 13 or Section 15(d) of the Securities Exchange
Act of 1934.

            SECTION 3.8 Reports by the Trustee. Any Trustee's report required
under Section 313(a) of the Trust Indenture Act of 1939 shall be transmitted on
or before July 15 in each year following the date hereof, so long as any
Securities are outstanding hereunder, and shall be dated as of a date convenient
to the Trustee no more than 60 nor less than 45 days prior thereto.

            SECTION 3.9 Limitations on Liens. The Issuer will not create or
assume, and will not permit any Consolidated Subsidiary to create or assume, any
Indebtedness for money borrowed which is secured by a mortgage, pledge, security
interest or lien ("liens") of or upon any assets, whether now owned or hereafter
acquired, of the Issuer or any such Consolidated Subsidiary without equally and
ratably securing the Securities by a lien ranking ratably with and equal to (or
at the Issuer's option prior to) such secured Indebtedness. The foregoing
restriction, however, will not apply to:

            (a) liens existing on the date of this Indenture;

            (b) liens on any assets of any corporation existing at the time such
      corporation becomes a Consolidated Subsidiary;

            (c) liens on any assets existing at the time of acquisition of such
      assets by the Issuer or a Consolidated Subsidiary, or liens to secure the
      payment of all or any part of the purchase price of such assets upon the
      acquisition of such assets by the Issuer or a Consolidated Subsidiary or
      to secure any indebtedness incurred or guaranteed by the Issuer or a
      Consolidated Subsidiary prior to, at the time of, or within 360 days after
      such acquisition (or in the case of real property, the completion of
      construction (including any improvements on an existing asset) or
      commencement of full operation of such asset, whichever is later) which
      indebtedness is incurred or guaranteed for the purpose of financing all or
      any part of the purchase price thereof or, in the case of real property,
      construction or improvements thereon; provided, however, that in the case
      of any such acquisition, construction or improvement, the lien shall not
      apply to any assets theretofore owned by the Issuer or a Consolidated
      Subsidiary, other


                                       22
<PAGE>   30
      than, in the case of any such construction or improvement, any real 
      property on which the property so constructed, or the improvement, is
      located;

            (d) liens on any assets to secure indebtedness of a Consolidated
      Subsidiary to the Issuer or to another wholly-owned domestic Subsidiary;

            (e) liens on any assets of a corporation existing at the time such
      corporation is merged into or consolidated with the Issuer or a Subsidiary
      or at the time of a purchase, lease or other acquisition of the assets of
      a corporation or firm as an entirety or substantially as an entirety by
      the Issuer or a Subsidiary;

            (f) liens on any assets of the Issuer or a Consolidated Subsidiary
      in favor of the United States of America or any State thereof, or any
      department, agency or instrumentality or political subdivision of the
      United States of America or any State thereof, or in favor of any other
      country, or any political subdivision thereof, to secure partial,
      progress, advance or other payments pursuant to any contract or statute or
      to secure any indebtedness incurred or guaranteed for the purpose of
      financing all or any part of the purchase price (or, in the case of real
      property, the cost of construction), of the assets subject to such liens
      (including, but not limited to, liens incurred in connection with
      pollution control, industrial revenue or similar financings);

            (g) any extension, renewal or replacement (or successive extensions,
      renewals or replacements) in whole or in part of any lien referred to in
      the foregoing clauses (a) to (f), inclusive; provided, however, that the
      principal amount of indebtedness secured thereby shall not exceed the
      principal amount of indebtedness so secured at the time of such extension,
      renewal or replacement and that such extension, renewal or replacement
      shall be limited to all or a part of the assets which secured the lien so
      extended, renewed or replaced (plus improvements and construction on such
      real property);

            (h) liens imposed by law, such as mechanics', workmen's,
      repairmen's, materialmen's, carriers', warehousemen's, vendors' or other


                                       23
<PAGE>   31
      similar liens arising in the ordinary course of business, or governmental
      (federal, state or municipal) liens arising out of contracts for the sale
      of products or services by the Issuer or any Consolidated Subsidiary, or
      deposits or pledges to obtain the release of any of the foregoing liens;

            (i) pledges, liens or deposits under worker's compensation laws or
      similar legislation and liens or judgments thereunder which are not
      currently dischargeable, or in connection with bids, tenders, contracts
      (other than for the payment of money) or leases to which the Issuer or any
      Consolidated Subsidiary is a party, or to secure public or statutory
      obligations of the Issuer or any Consolidated Subsidiary, or in connection
      with obtaining or maintaining self-insurance or to obtain the benefits of
      any law, regulation or arrangement pertaining to unemployment insurance,
      old age pensions, social security or similar matters, or to secure surety,
      appeal or customs bonds to which the Issuer or any Consolidated Subsidiary
      is a party, or in litigation or other proceedings such as, but not limited
      to, inter-pleader proceedings, and other similar pledges, liens or
      deposits made or incurred in the ordinary course of business;

            (j) liens created by or resulting from any litigation or other
      proceeding which is being contested in good faith by appropriate
      proceedings, including liens arising out of judgments or awards against
      the Issuer or any Consolidated Subsidiary with respect to which the Issuer
      or such Consolidated Subsidiary is in good faith prosecuting an appeal or
      proceedings for review or for which the time to make an appeal has not yet
      expired; or final unappealable judgment liens which are satisfied within
      15 days of the date of judgment; or liens incurred by the Issuer or any
      Consolidated Subsidiary for the purpose of obtaining a stay or discharge
      in the course of any litigation or other proceeding to which the Issuer or
      such Consolidated Subsidiary is a party;

            (k) liens for taxes or assessments or governmental charges or levies
      not yet due or delinquent, or which can thereafter be paid without
      penalty, or which are being contested in good faith by appropriate
      proceedings; landlord's liens on property held under lease; and any other
      liens


                                       24
<PAGE>   32
      or charges incidental to the conduct of the business of the Issuer or any
      Consolidated Subsidiary or the ownership of the assets of any of them
      which were not incurred in connection with the borrowing of money or the
      obtaining of advances or credit and which do not, in the opinion of the
      Issuer, materially impair the use of such assets in the operation of the
      business of the Issuer or such Consolidated Subsidiary or the value of
      such assets for the purposes of such business; or

            (l) liens on any assets of a Financing Subsidiary.

            Notwithstanding the restrictions set forth in the preceding
paragraph, the Issuer or any Consolidated Subsidiary will be permitted to create
or assume any Indebtedness which is secured by a lien without equally and
ratably securing the Securities; provided that at the time of such creation or
assumption, and immediately after giving effect thereto, Exempted Debt does not
exceed 20% of Consolidated Net Tangible Assets.

            SECTION 3.10 Limitation on Sale and Lease-Back. The Issuer will not,
nor will it permit any Consolidated Subsidiary to, enter into any sale and
lease-back transaction with respect to any assets, other than any such
transaction involving a lease for a term of not more than three years, unless
either (a) the Issuer or such Consolidated Subsidiary would be entitled to incur
Indebtedness secured by a lien on the assets to be leased, in an amount at least
equal to the Attributable Debt with respect to such sale and lease-back
transaction, without equally and ratably securing the Securities, pursuant to
clauses (a) through (k) inclusive of Section 3.9, or (b) the proceeds of the
sale of the assets to be leased are at least equal to the fair value of such
assets (as determined by the Board of Directors of the Issuer) and the proceeds
are applied to the purchase or acquisition (or, in the case of property, the
construction) of assets or to the retirement (other than at maturity or pursuant
to a mandatory sinking fund or redemption provision) of Senior Funded
Indebtedness. This limitation, however, will not apply if at the time the Issuer
or any Consolidated Subsidiary enters into such sale and lease-back transaction,
and immediately after giving effect thereto, Exempted Debt does not exceed 20%
of Consolidated Net Tangible Assets.

            SECTION 3.11 Limitations on Subsidiary


                                       25
<PAGE>   33
Indebtedness. The Issuer will not permit any Restricted Subsidiary, directly or
indirectly, to create, incur, assume, guarantee, acquire, or become liable,
contingently or otherwise, with respect to, or otherwise become responsible for
payment of (collectively, "incur"), any Indebtedness for money borrowed;
provided, however, that the foregoing limitations will not apply to the
incurrence of any of the following, each of which shall be given independent
effect:

                  (a) Indebtedness outstanding on the date of this Indenture;

                  (b) Indebtedness of a Restricted Subsidiary that represents
            the assumption by such Restricted Subsidiary of Indebtedness of
            another Subsidiary, and Indebtedness owed by any Restricted
            Subsidiary to the Issuer or to another Subsidiary; provided that any
            such Indebtedness shall be at all times held by a Person which is
            either the Issuer or a Subsidiary; and provided, further, that upon
            the transfer or other disposition of any such Indebtedness to a
            Person other than the Issuer or another Subsidiary, the incurrence
            of such Indebtedness shall be deemed to be an incurrence that is not
            permitted by this clause (b);

                  (c) Indebtedness arising from (i) the endorsement of
            negotiable instruments for deposit or collection or similar
            transactions in the ordinary course of business; or (ii) the
            honoring by a bank or other financial institution of a check, draft
            or similar instrument inadvertently (except in the case of daylight
            overdrafts) drawn against insufficient funds in the ordinary course
            of business; provided, however, that such overdraft is extinguished
            within five Business days of incurrence;

                  (d) Indebtedness arising from guarantees of loans and advances
            by third parties to employees and officers of a Restricted
            Subsidiary in the ordinary course of business for bona fide business
            purposes, provided that the aggregate amount of such guarantees by
            all Restricted Subsidiaries does not exceed $1,000,000;

                  (e) Indebtedness incurred by a foreign Restricted Subsidiary
            in the ordinary course of business;


                                       26
<PAGE>   34
                  (f) Indebtedness of any corporation existing at the time such
            corporation becomes a Restricted Subsidiary or is merged into or
            consolidated with a Restricted Subsidiary or at the time of a
            purchase, lease or other acquisition by a Restricted Subsidiary of
            assets of such corporation as an entirety or substantially as an
            entirety;

                  (g) Indebtedness of a Restricted Subsidiary arising from
            agreements providing for indemnification, adjustment of purchase
            price or similar obligations or from guarantees, letters of credit,
            surety bonds or performance bonds securing any obligations of the
            Issuer or any of its Subsidiaries incurred or assumed in connection
            with the disposition of any business, property or Subsidiary, other
            than guarantees or similar credit support by any Restricted
            Subsidiary of Indebtedness incurred by any Person acquiring all or
            any portion of such business, property or Subsidiary for the purpose
            of financing such acquisition;

                  (h) Indebtedness of a Restricted Subsidiary in respect of
            performance, surety and other similar bonds, bankers' acceptances
            and letters of credit provided by such Subsidiary in the ordinary
            course of business;

                  (i) Indebtedness secured by a lien permitted by Section 3.9 or
            arising in respect of a sale and lease-back transaction permitted by
            Section 3.10 or any Indebtedness incurred to finance all or any part
            of the purchase price or cost of construction of improvements in
            respect of property or assets acquired by a Person after the date of
            the Indenture and incurred prior to, at the time of, or within 360
            days after, the acquisition of any such property or assets or the
            completion of any such construction or improvements;

                  (j) Indebtedness that is issued, assumed or guaranteed in
            connection with, or with a view to, compliance by a Restricted
            Subsidiary with the requirements of any program adopted by any
            federal, state or local governmental authority and applicable to
            such Restricted Subsidiary and providing financial or tax benefits
            to such Restricted Subsidiary which are not available directly to
            the Issuer;


                                       27
<PAGE>   35
                  (k) Indebtedness arising from Rate Hedging Obligations
            incurred to limit risks of currency or interest rate fluctuations to
            which a Subsidiary is otherwise subject by virtue of the operations
            of its business, and not for speculative purposes;

                  (l) Indebtedness incurred by any Financing Subsidiary; and

                  (m) Indebtedness incurred in connection with or given in
            exchange for the renewal, extension, substitution, refunding,
            defeasance, refinancing or replacement of any Indebtedness described
            in clauses 9(a), (b), (f), (g)and (i) above ("Refinancing
            Indebtedness"); provided that (i) the principal amount of such
            Refinancing Indebtedness shall not exceed the principal amount of
            the Indebtedness so renewed, extended, substituted, refunded,
            defeased, refinanced or replaced (plus the premiums paid in
            connection therewith (which shall not exceed the stated amount of
            any premium or other payment required to be paid in connection with
            such a refinancing pursuant to the terms of the Indebtedness being
            renewed, extended, substituted, refunded, defeased, refinanced or
            replaced) and the expenses incurred in connection therewith); (ii)
            the Refinancing Indebtedness shall have a weighted average life to
            maturity equal to or greater than the weighted average life to
            maturity of the Indebtedness being renewed, extended, substituted,
            refunded, defeased, refinanced or replaced; and (iii) the
            Refinancing Indebtedness shall rank no more senior, and shall be at
            least as subordinated, in right of payment as the Indebtedness being
            renewed, extended, substituted, refunded, defeased, refinanced or
            replaced.

            Notwithstanding the foregoing restrictions, Restricted Subsidiaries
will be permitted to incur any Indebtedness for money borrowed that would
otherwise be subject to the foregoing restrictions in an aggregate principal
amount which, together with the aggregate principal amount of other such
Indebtedness for money borrowed that is incurred by Restricted Subsidiaries (not
including Indebtedness permitted pursuant to the foregoing paragraphs (a)
through (m)), does not, at the time such Indebtedness is incurred, exceed 20% of
Consolidated Net Tangible Assets.


                                       28
<PAGE>   36
                                  ARTICLE FOUR

                   REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS
                               ON EVENT OF DEFAULT

            SECTION 4.1 Event of Default Defined; Acceleration of Maturity;
Waiver of Default. "Event of Default" with respect to Securities of any series
wherever used herein, means each one of the following events which shall have
occurred and be continuing (whatever the reason for such Event of Default and
whether it shall be voluntary or involuntary or be effected by operation of law
or pursuant to any judgment, decree or order of any court or any order, rule or
regulation of any administrative or governmental body):

            (a) default in the payment of any instalment of interest upon any of
      the Securities of such series as and when the same shall become due and
      payable, and continuance of such default for a period of 30 days; or

            (b) default in the payment of all or any part of the principal, or
      premium, if any, on any of the Securities of such series as and when the
      same shall become due and payable either at maturity, upon redemption, by
      declaration or otherwise; or

            (c) default in the payment of any sinking fund instalment as and
      when the same shall become due and payable by the terms of the Securities
      of such series; or

            (d) failure on the part of the Issuer duly to observe or perform any
      other of the covenants or agreements of the Issuer in respect of the
      Securities of such series (other than a covenant or warranty in respect of
      the Securities of such series a default in whose performance or whose
      breach is elsewhere in this Section specifically dealt with) for a period
      of 90 days after the date on which written notice specifying such failure,
      stating that such notice is a "Notice of Default" hereunder and demanding
      that the Issuer remedy the same, has been given by registered or certified
      mail, return receipt requested, to the Issuer by the Trustee, or to the
      Issuer and the Trustee by the Holders of at least 25% in aggregate
      principal amount of the Outstanding Securities of all series affected
      thereby; or

            (e)  a court having jurisdiction in the premises
      shall enter a decree or order for relief in respect of


                                       29

<PAGE>   37
      the Issuer in an involuntary case under any applicable bankruptcy,
      insolvency or other similar law now or hereafter in effect, or appointing
      a receiver, liquidator, assignee, custodian, trustee or sequestrator (or
      similar official) of the Issuer or for any substantial part of its
      property or ordering the winding up or liquidation of its affairs, and
      such decree or order shall remain unstayed and in effect for a period of
      60 consecutive days; or

            (f) the Issuer shall commence a voluntary case under any applicable
      bankruptcy, insolvency or other similar law now or hereafter in effect, or
      consent to the entry of an order for relief in an involuntary case under
      any such law, or consent to the appointment of or taking possession by a
      receiver, liquidator, assignee, custodian, trustee or sequestrator (or
      similar official) of the Issuer or for any substantial part of its
      property, or make any general assignment for the benefit of creditors; or

            (g) any other Event of Default provided in the supplemental
      indenture or resolution of the Board of Directors under which such series
      of Securities is issued or in the form of Security for such series.

If an Event of Default described in clauses (a), (b), (c), (d) or (g) above (if
the Event of Default under clause (d) or (g) is with respect to less than all
series of Securities then Outstanding) occurs and is continuing, then, and in
each and every such case, unless the principal of all of the Securities of such
series shall have already become due and payable, either the Trustee or the
holders of not less than 25% in aggregate principal amount of the Securities of
such series then Outstanding hereunder (each such series voting as a separate
class) by notice in writing to the Issuer (and to the Trustee if given by
Securityholders), may declare the entire principal (or, if the Securities of
such series are Original Issue Discount Securities, such portion of the
principal amount as may be specified in the terms of such series) of all
Securities of such series and the interest accrued thereon, if any, to be due
and payable immediately, and upon any such declaration the same shall become
immediately due and payable. If an Event of Default described in clause (d) or
(g) (if the Event of Default under clause (d) or (g), as the case may be, is
with respect to all series of Securities then Outstanding) or (e) or (f) occurs
and is continuing, then and in each and every such case, unless the principal of
all the Securities shall have already become due and payable, either the Trustee
or the Holders of not less than 25% in aggregate principal amount of all the


                                       30

<PAGE>   38
Securities then Outstanding hereunder (treated as one class), by notice in
writing to the Issuer (and to the Trustee if given by Securityholders), may
declare the entire principal (or, if any Securities are Original Issue Discount
Securities, such portion of the principal as may be specified in the terms
thereof) of all the Securities then outstanding and interest accrued thereon, if
any, to be due and payable immediately, and upon any such declaration the same
shall become immediately due and payable.

            The foregoing provisions, however, are subject to the condition that
if, at any time after the principal (or, if the Securities are Original Issue
Discount Securities, such portion of the principal as may be specified in the
terms thereof) of the Securities of any series (or of all the Securities, as the
case may be) shall have been so declared due and payable, and before any
judgment or decree for the payment of the moneys due shall have been obtained or
entered as hereinafter provided, the Issuer shall pay or shall deposit with the
Trustee a sum sufficient to pay all matured installments of interest upon all
the Securities of such series (or of all the Securities, as the case may be) and
the principal of any and all Securities of such series (or of all the
Securities, as the case may be) which shall have become due otherwise than by
acceleration (with interest upon such principal and, to the extent that payment
of such interest is enforceable under applicable law, on overdue installments of
interest, at the same rate as the rate of interest or Yield to Maturity (in the
case of Original Issue Discount Securities) specified in the Securities of such
series (or at the respective rates of interest or Yields to Maturity of all the
Securities, as the case may be) to the date of such payment or deposit) and such
amount as shall be sufficient to cover reasonable compensation to the Trustee,
its agents, attorneys and counsel, and all other expenses and liabilities
incurred, and all advances made, by the Trustee except as a result of negligence
or bad faith, and if any and all Events of Default under the Indenture, other
than the non-payment of the principal of Securities which shall have become due
by acceleration, shall have been cured, waived or otherwise remedied as provided
herein--then and in every such case the holders of a majority in aggregate
principal amount of all the Securities of such series, each series voting as a
separate class (or of all the Securities, as the case may be, voting as a single
class), then outstanding, by written notice to the Issuer and to the Trustee,
may waive all defaults with respect to such series (or with respect to all the
Securities, as the case may be) and rescind and annul such declaration and its
consequences, but no such waiver or rescission and annulment shall extend to or
shall affect any


                                       31

<PAGE>   39
subsequent default or shall impair any right consequent thereon.

            For all purposes under this Indenture, if a portion of the principal
of any Original Issue Discount Securities shall have been accelerated and
declared due and payable pursuant to the provisions hereof, then, from and after
such declaration, unless such declaration has been rescinded and annulled, the
principal amount of such Original Issue Discount Securities shall be deemed, for
all purposes hereunder, to be such portion of the principal thereof as shall be
due and payable as a result of such acceleration, and payment of such portion of
the principal thereof as shall be due and payable as a result of such
acceleration, together with interest, if any, thereon and all other amounts
owing thereunder, shall constitute payment in full of such Original Issue
Discount Securities.

            SECTION 4.2 Collection of Indebtedness by Trustee; Trustee May Prove
Debt. The Issuer covenants that (a) in case default shall be made in the payment
of any instalment of interest on any of the Securities of any series when such
interest shall have become due and payable, and such default shall have
continued for a period of 30 days or (b) in case default shall be made in the
payment of all or any part of the principal of any of the Securities of any
series when the same shall have become due and payable, whether upon maturity of
the Securities of such series or upon any redemption or by declaration or
otherwise--then upon demand of the Trustee, the Issuer will pay to the Trustee
for the benefit of the Holders of the Securities of such series the whole amount
that then shall have become due and payable on all Securities of such series for
principal or interest, as the case may be (with interest to the date of such
payment upon the overdue principal and, to the extent that payment of such
interest is enforceable under applicable law, on overdue installments of
interest at the same rate as the rate of interest or Yield to Maturity (in the
case of Original Issue Discount Securities) specified in the Securities of such
series); and in addition thereto, such further amount as shall be sufficient to
cover the costs and expenses of collection, including reasonable compensation to
the Trustee and each predecessor Trustee, their respective agents, attorneys and
counsel, and any expenses and liabilities incurred, and all advances made, by
the Trustee and each predecessor Trustee except as a result of its negligence or
bad faith.

            Until such demand is made by the Trustee, the Issuer may pay the
principal of and interest on the Securities of any series to the registered
holders, whether


                                       32
<PAGE>   40
or not the principal of and interest on the Securities of such series be
overdue.

            In case the Issuer shall fail forthwith to pay such amounts upon
such demand, the Trustee, in its own name and as trustee of an express trust,
shall be entitled and empowered to institute any action or proceedings at law or
in equity for the collection of the sums so due and unpaid, and may prosecute
any such action or proceedings to judgment or final decree, and may enforce any
such judgment or final decree against the Issuer or other obligor upon such
Securities and collect in the manner provided by law out of the property of the
Issuer or other obligor upon such Securities, wherever situated, the moneys
adjudged or decreed to be payable.

            In case there shall be pending proceedings relative to the Issuer or
any other obligor upon the Securities under Title 11 of the United States Code
or any other applicable Federal or state bankruptcy, insolvency or other similar
law, or in case a receiver, assignee or trustee in bankruptcy or reorganization,
liquidator, sequestrator or similar official shall have been appointed for or
taken possession of the Issuer or its property or such other obligor, or in case
of any other comparable judicial proceedings relative to the Issuer or other
obligor upon the Securities of any series, or to the creditors or property of
the Issuer or such other obligor, the Trustee, irrespective of whether the
principal of any Securities shall then be due and payable as therein expressed
or by declaration or otherwise and irrespective of whether the Trustee shall
have made any demand pursuant to the provisions of this Section, shall be
entitled and empowered, by intervention in such proceedings or otherwise:

            (a) to file and prove a claim or claims for the whole amount of
      principal and interest (or, if the Securities of any series are Original
      Issue Discount Securities, such portion of the principal amount as may be
      specified in the terms of such series) owing and unpaid in respect of the
      Securities of any series, and to file such other papers or documents as
      may be necessary or advisable in order to have the claims of the Trustee
      (including any claim for reasonable compensation to the Trustee and each
      predecessor Trustee, and their respective agents, attorneys and counsel,
      and for reimbursement of all expenses and liabilities incurred, and all
      advances made, by the Trustee and each predecessor Trustee, except as a
      result of negligence or bad faith) and of the Securityholders allowed in
      any judicial proceedings


                                       33

<PAGE>   41
      relative to the Issuer or other obligor upon the Securities of any series,
      or to the creditors or property of the Issuer or such other obligor,

            (b) unless prohibited by applicable law and regulations, to vote on
      behalf of the holders of the Securities of any series in any election of a
      trustee or a standby trustee in arrangement, reorganization, liquidation
      or other bankruptcy or insolvency proceedings or person performing similar
      functions in comparable proceedings, and

            (c) to collect and receive any moneys or other property payable or
      deliverable on any such claims, and to distribute all amounts received
      with respect to the claims of the Securityholders and of the Trustee on
      their behalf; and any trustee, receiver, or liquidator, custodian or other
      similar official is hereby authorized by each of the Securityholders to
      make payments to the Trustee, and, in the event that the Trustee shall
      consent to the making of payments directly to the Securityholders, to pay
      to the Trustee such amounts as shall be sufficient to cover reasonable
      compensation to the Trustee, each predecessor Trustee and their respective
      agents, attorneys and counsel, and all other expenses and liabilities
      incurred, and all advances made, by the Trustee and each predecessor
      Trustee except as a result of negligence or bad faith and all other
      amounts due to the Trustee or any predecessor Trustee pursuant to Section
      5.6.

            Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or vote for or accept or adopt on behalf of any
Securityholder any plan of reorganization, arrangement, adjustment or
composition affecting the Securities of any series or the rights of any Holder
thereof, or to authorize the Trustee to vote in respect of the claim of any
Securityholder in any such proceeding except, as aforesaid, to vote for the
election of a trustee in bankruptcy or similar person.

            All rights of action and of asserting claims under this Indenture,
or under any of the Securities, may be enforced by the Trustee without the
possession of any of the Securities or the production thereof on any trial or
other proceedings relative thereto, and any such action or proceedings
instituted by the Trustee shall be brought in its own name as trustee of an
express trust, and any recovery of judgment, subject to the payment of the
expenses, disbursements and compensation of the Trustee, each predecessor
Trustee and their respective agents and


                                   34

<PAGE>   42
attorneys, shall be for the ratable benefit of the holders of the Securities in
respect of which such action was taken.

            In any proceedings brought by the Trustee (and also any proceedings
involving the interpretation of any provision of this Indenture to which the
Trustee shall be a party) the Trustee shall be held to represent all the holders
of the Securities in respect to which such action was taken, and it shall not be
necessary to make any holders of such Securities parties to any such
proceedings.

            SECTION 4.3 Application of Proceeds. Any moneys collected by the
Trustee pursuant to this Article in respect of any series shall be applied in
the following order at the date or dates fixed by the Trustee and, in case of
the distribution of such moneys on account of principal or interest, upon
presentation of the several Securities in respect of which monies have been
collected and stamping (or otherwise noting) thereon the payment, or issuing
Securities of such series in reduced principal amounts in exchange for the
presented Securities of like series if only partially paid, or upon surrender
thereof if fully paid:

            FIRST: To the payment of costs and expenses applicable to such
      series in respect of which monies have been collected, including
      reasonable compensation to the Trustee and each predecessor Trustee and
      their respective agents and attorneys and of all expenses and liabilities
      incurred, and all advances made, by the Trustee and each predecessor
      Trustee except as a result of negligence or bad faith, and all other
      amounts due to the Trustee or any predecessor Trustee pursuant to Section
      5.6;

            SECOND: In case the principal of the Securities of such series in
      respect of which moneys have been collected shall not have become and be
      then due and payable, to the payment of interest on the Securities of such
      series in default in the order of the maturity of the installments of such
      interest, with interest (to the extent that such interest has been
      collected by the Trustee) upon the overdue installments of interest at the
      same rate as the rate of interest or Yield to Maturity (in the case of
      Original Issue Discount Securities) specified in such Securities, such
      payments to be made ratably to the persons entitled thereto, without
      discrimination or preference;

            THIRD: In case the principal of the Securities of such series in
      respect of which moneys have been collected shall have become and shall be
      then due and


                                       35

<PAGE>   43
      payable, to the payment of the whole amount then owing and unpaid upon all
      the Securities of such series for principal and interest, with interest
      upon the overdue principal, and (to the extent that such interest has been
      collected by the Trustee) upon overdue installments of interest at the
      same rate as the rate of interest or Yield to Maturity (in the case of
      Original Issue Discount Securities) specified in the Securities of such
      series; and in case such moneys shall be insufficient to pay in full the
      whole amount so due and unpaid upon the Securities of such series, then to
      the payment of such principal and interest or yield to maturity, without
      preference or priority of principal over interest or yield to maturity, or
      of interest or yield to maturity over principal, or of any instalment of
      interest over any other instalment of interest, or of any Security of such
      series over any other Security of such series, ratably to the aggregate of
      such principal and accrued and unpaid interest or yield to maturity; and

            FOURTH: To the payment of the remainder, if any, to the Issuer or
      any other person lawfully entitled thereto.

            SECTION 4.4 Suits for Enforcement. In case an Event of Default has
occurred, has not been waived and is continuing, the Trustee may in its
discretion proceed to protect and enforce the rights vested in it by this
Indenture by such appropriate judicial proceedings as the Trustee shall deem
most effectual to protect and enforce any of such rights, either at law or in
equity or in bankruptcy or otherwise, whether for the specific enforcement of
any covenant or agreement contained in this Indenture or in aid of the exercise
of any power granted in this Indenture or to enforce any other legal or
equitable right vested in the Trustee by this Indenture or by law.

            SECTION 4.5 Restoration of Rights on Abandonment of Proceedings. In
case the Trustee shall have proceeded to enforce any right under this Indenture
and such proceedings shall have been discontinued or abandoned for any reason,
or shall have been determined adversely to the Trustee, then and in every such
case the Issuer and the Trustee shall be restored respectively to their former
positions and rights hereunder, and all rights, remedies and powers of the
Issuer, the Trustee and the Securityholders shall continue as though no such
proceedings had been taken.

            SECTION 4.6 Limitations on Suits by Securityholders. No holder of
any Security of any series shall have


                                       36

<PAGE>   44
any right by virtue or by availing of any provision of this Indenture to
institute any action or proceeding at law or in equity or in bankruptcy or
otherwise upon or under or with respect to this Indenture, or for the
appointment of a trustee, receiver, liquidator, custodian or other similar
official or for any other remedy hereunder, unless such holder previously shall
have given to the Trustee written notice of default and of the continuance
thereof, as herein-before provided, and unless also the holders of not less than
25% in aggregate principal amount of the Securities of such series then
outstanding shall have made written request upon the Trustee to institute such
action or proceedings in its own name as trustee hereunder and shall have
offered to the Trustee such reasonable indemnity as it may require against the
costs, expenses and liabilities to be incurred therein or thereby and the
Trustee for 60 days after its receipt of such notice, request and offer of
indemnity shall have failed to institute any such action or proceeding and no
direction inconsistent with such written request shall have been given to the
Trustee pursuant to Section 4.9; it being understood and intended, and being
expressly covenanted by the taker and Holder of every Security with every other
taker and Holder and the Trustee, that no one or more Holders of Securities of
any series shall have any right in any manner whatever by virtue or by availing
of any provision of this Indenture to affect, disturb or prejudice the rights of
any other such Holder of Securities, or to obtain or seek to obtain priority
over or preference to any other such Holder or to enforce any right under this
Indenture, except in the manner herein provided and for the equal, ratable and
common benefit of all Holders of Securities of the applicable series. For the
protection and enforcement of the provisions of this Section, each and every
Securityholder and the Trustee shall be entitled to such relief as can be given
either at law or in equity.

            SECTION 4.7 Unconditional Right of Securityholders to Institute
Certain Suits. Notwithstanding any other provision in this Indenture and any
provision of any Security, the right of any Holder of any Security to receive
payment of the principal of and interest on such Security on or after the
respective due dates expressed in such Security, or to institute suit for the
enforcement of any such payment on or after such respective dates, shall not be
impaired or affected without the consent of such Holder.

            SECTION 4.8 Powers and Remedies Cumulative; Delay or Omission Not
Waiver of Default. Except as provided in Section 4.6, no right or remedy herein
conferred upon or reserved to the Trustee or to the Securityholders is intended
to be exclusive of any other right or remedy, and every


                                       37

<PAGE>   45
right and remedy shall, to the extent permitted by law, be cumulative and in
addition to every other right and remedy given hereunder or now or hereafter
existing at law or in equity or otherwise. The assertion or employment of any
right or remedy hereunder, or otherwise, shall not prevent the concurrent
assertion or employment of any other appropriate right or remedy.

            No delay or omission of the Trustee or of any Securityholder to
exercise any right or power accruing upon any Event of Default occurring and
continuing as aforesaid shall impair any such right or power or shall be
construed to be a waiver of any such Event of Default or an acquiescence
therein; and, subject to Section 4.6, every power and remedy given by this
Indenture or by law to the Trustee or to the Securityholders may be exercised
from time to time, and as often as shall be deemed expedient, by the Trustee or
by the Securityholders.

            SECTION 4.9 Control by Securityholders. The Holders of a majority in
aggregate principal amount of the Securities of each series affected (with each
series voting as a separate class) at the time outstanding shall have the right
to direct the time, method, and place of conducting any proceeding for any
remedy available to the Trustee, or exercising any trust or power conferred on
the Trustee with respect to the Securities of such series by this Indenture;
provided that such direction shall not be otherwise than in accordance with law
and the provisions of this Indenture and provided further that (subject to the
provisions of Section 5.1) the Trustee shall have the right to decline to follow
any such direction if the Trustee, being advised by counsel, shall determine
that the action or proceeding so directed may not lawfully be taken or if the
Trustee in good faith by its board of directors, the executive committee, or a
trust committee of directors or responsible officers of the Trustee shall
determine that the action or proceedings so directed would involve the Trustee
in personal liability or if the Trustee in good faith shall so determine that
the actions or forbearances specified in or pursuant to such direction would be
unduly prejudicial to the interests of Holders of the Securities of all series
so affected not joining in the giving of said direction, it being understood
that (subject to Section 5.1) the Trustee shall have no duty to ascertain
whether or not such actions or forbearances are unduly prejudicial to such
Holders.

            Nothing in this Indenture shall impair the right of the Trustee in
its discretion to take any action deemed proper by the Trustee and which is not
inconsistent with such direction or directions by Securityholders.


                                       38

<PAGE>   46
            SECTION 4.10 Waiver of Past Defaults. Prior to a declaration of the
acceleration of the maturity of the Securities of any series as provided in
Section 4.1, the Holders of a majority in aggregate principal amount of the
Securities of such series at the time Outstanding (each such series voting as a
separate class) may on behalf of the Holders of all the Securities of such
series waive any past default or Event of Default described in clause (d) or (g)
of Section 4.1 which relates to less than all series of Securities then
Outstanding, except a default in respect of a covenant or provision hereof which
cannot be modified or amended without the consent of each Holder affected as
provided in Section 7.2. Prior to a declaration of acceleration of the maturity
of the Securities of any series as provided in Section 4.1, the Holders of
Securities of a majority in principal amount of all the Securities then
Outstanding (voting as one class) may on behalf of all Holders waive any past
default or Event of Default referred to in said clause (d) or (g) which relates
to all series of Securities then Outstanding, or described in clause (e) or (f)
of Section 4.1, except a default in respect of a covenant or provision hereof
which cannot be modified or amended without the consent of the Holder of each
Security affected as provided in Section 7.2. In the case of any such waiver,
the Issuer, the Trustee and the Holders of the Securities of each series
affected shall be restored to their former positions and rights hereunder,
respectively.

            Upon any such waiver, such default shall cease to exist and be
deemed to have been cured and not to have occurred, and any Event of Default
arising therefrom shall be deemed to have been cured, and not to have occurred
for every purpose of this Indenture; but no such waiver shall extend to any
subsequent or other default or Event of Default or impair any right consequent
thereon.

            SECTION 4.11 Trustee to Give Notice of Default, But May Withhold in
Certain Circumstances. The Trustee shall give to the Securityholders of any
series, as the names and addresses of such Holders appear on the registry books,
notice by mail of all defaults known to the Trustee which have occurred with
respect to such series, such notice to be transmitted within 90 days after the
occurrence thereof, unless such defaults shall have been cured before the giving
of such notice (the term "default" or "defaults" for the purposes of this
Section and Section 5.2(h) being hereby defined to mean any event or condition
which is, or with notice or lapse of time or both would become, an Event of
Default); provided that, except in the case of default in the payment of the
principal of or interest on any of the Securities of such series, or in the
payment of any sinking


                                       39

<PAGE>   47
or purchase fund installment with respect to the Securities of such series, the
Trustee shall be protected in withholding such notice if and so long as the
board of directors, the executive committee, or a trust committee of directors
or trustees and/or responsible officers of the Trustee in good faith determines
that the withholding of such notice is in the interests of the Securityholders
of such series.

            SECTION 4.12 Right of Court to Require Filing of Undertaking to Pay
Costs. All parties to this Indenture agree, and each Holder of any Security by
his acceptance thereof shall be deemed to have agreed, that any court may in its
discretion require, in any suit for the enforcement of any right or remedy under
this Indenture or in any suit against the Trustee for any action taken, suffered
or omitted by it as Trustee, the filing by any party litigant in such suit of an
undertaking to pay the costs of such suit, and that such court may in its
discretion assess reasonable costs, including reasonable attorneys' fees,
against any party litigant in such suit, having due regard to the merits and
good faith of the claims or defenses made by such party litigant; but the
provisions of this Section shall not apply to any suit instituted by the
Trustee, to any suit instituted by any Securityholder or group of
Securityholders of any series holding in the aggregate more than 10% in
aggregate principal amount of the Securities of such series, or, in the case of
any suit relating to or arising under clauses (d) or (g) of Section 4.1 (if the
suit relates to Securities of more than one but less than all series), 10% in
aggregate principal amount of Securities Outstanding affected thereby, or in the
case of any suit relating to or arising under clauses (d) or (g) (if the suit
relates to all the Securities then Outstanding), (e) or (f) of Section 4.1, 10%
in aggregate principal amount of all Securities Outstanding, or to any suit
instituted by any Securityholder for the enforcement of the payment of the
principal of or interest on any Security on or after the due date expressed in
such Security.


                                  ARTICLE FIVE

                             CONCERNING THE TRUSTEE

            SECTION 5.1 Duties and Responsibilities of the Trustee; During
Default; Prior to Default. With respect to the Holders of any series of
Securities issued hereunder, the Trustee, prior to the occurrence of an Event of
Default with respect to the Securities of a particular series and after the
curing or waiving of all Events of Default which


                                       40

<PAGE>   48
may have occurred with respect to such series, undertakes to perform such duties
and only such duties as are specifically set forth in this Indenture. In case an
Event of Default with respect to the Securities of a series has occurred (which
has not been cured or waived) the Trustee shall exercise such of the rights and
powers vested in it by this Indenture, and use the same degree of care and skill
in their exercise, as a prudent man would exercise or use under the
circumstances in the conduct of his own affairs.

            No provision of this Indenture shall be construed to relieve the
Trustee from liability for its own negligent action, its own negligent failure
to act or its own wilful misconduct, except that

            (a) prior to the occurrence of an Event of Default with respect to
      the Securities of any series and after the curing or waiving of all such
      Events of Default with respect to such series which may have occurred:

                  (i) the duties and obligations of the Trustee with respect to
            the Securities of any Series shall be determined solely by the
            express provisions of this Indenture, and the Trustee shall not be
            liable except for the performance of such duties and obligations as
            are specifically set forth in this Indenture, and no implied
            covenants or obligations shall be read into this Indenture against
            the Trustee; and

                  (ii) in the absence of bad faith on the part of the Trustee,
            the Trustee may conclusively rely, as to the truth of the statements
            and the correctness of the opinions expressed therein, upon any
            statements, certificates or opinions furnished to the Trustee and
            conforming to the requirements of this Indenture; but in the case of
            any such statements, certificates or opinions which by any provision
            hereof are specifically required to be furnished to the Trustee, the
            Trustee shall be under a duty to examine the same to determine
            whether or not they conform to the requirements of this Indenture;

            (b) the Trustee shall not be liable for any error of judgment made
      in good faith by a Responsible Officer or Responsible Officers of the
      Trustee, unless it shall be proved that the Trustee was negligent in
      ascertaining the pertinent facts; and


                                       41

<PAGE>   49
            (c) the Trustee shall not be liable with respect to any action taken
      or omitted to be taken by it in good faith in accordance with the
      direction of the holders pursuant to Section 4.9 relating to the time,
      method and place of conducting any proceeding for any remedy available to
      the Trustee, or exercising any trust or power conferred upon the Trustee,
      under this Indenture.

            None of the provisions contained in this Indenture shall require the
Trustee to expend or risk its own funds or otherwise incur personal financial
liability in the performance of any of its duties or in the exercise of any of
its rights or powers, if there shall be reasonable ground for believing that the
repayment of such funds or adequate indemnity against such liability is not
reasonably assured to it.

            The provisions of this Section 5.1 are in furtherance of and subject
to Sections 315 and 316 of the Trust Indenture Act of 1939.

            SECTION 5.2 Certain Rights of the Trustee. In furtherance of and
subject to the Trust Indenture Act of 1939, and subject to Section 5.1:

            (a) the Trustee may rely and shall be protected in acting or
      refraining from acting upon any resolution, Officers' Certificate or any
      other certificate, statement, instrument, opinion, report, notice,
      request, consent, order, bond, debenture, note, coupon, security or other
      paper or document believed by it to be genuine and to have been signed or
      presented by the proper party or parties;

            (b) any request, direction, order or demand of the Issuer mentioned
      herein shall be sufficiently evidenced by an Officers' Certificate (unless
      other evidence in respect thereof be herein specifically prescribed); and
      any resolution of the Board of Directors may be evidenced to the Trustee
      by a copy thereof certified by the secretary or an assistant secretary of
      the Issuer;

            (c) the Trustee may consult with counsel and any advice or Opinion
      of Counsel shall be full and complete authorization and protection in
      respect of any action taken, suffered or omitted to be taken by it
      hereunder in good faith and in accordance with such advice or Opinion of
      Counsel;


                                   42

<PAGE>   50
            (d) the Trustee shall be under no obligation to exercise any of the
      trusts or powers vested in it by this Indenture at the request, order or
      direction of any of the Securityholders pursuant to the provisions of this
      Indenture, unless such Securityholders shall have offered to the Trustee
      reasonable security or indemnity against the costs, expenses and
      liabilities which might be incurred therein or thereby;

            (e) the Trustee shall not be liable for any action taken or omitted
      by it in good faith and believed by it to be authorized or within the
      discretion, rights or powers conferred upon it by this Indenture;

            (f) prior to the occurrence of an Event of Default hereunder and
      after the curing or waiving of all Events of Default, the Trustee shall
      not be bound to make any investigation into the facts or matters stated in
      any resolution, certificate, statement, instrument, opinion, report,
      notice, request, consent, order, approval, appraisal, bond, debenture,
      note, coupon, security, or other paper or document unless requested in
      writing so to do by the holders of not less than a majority in aggregate
      principal amount of the Securities of all series affected then
      outstanding; provided that, if the payment within a reasonable time to the
      Trustee of the costs, expenses or liabilities likely to be incurred by it
      in the making of such investigation is, in the opinion of the Trustee, not
      reasonably assured to the Trustee by the security afforded to it by the
      terms of this Indenture, the Trustee may require reasonable indemnity
      against such expenses or liabilities as a condition to proceeding; the
      reasonable expenses of every such investigation shall be paid by the
      Issuer or, if paid by the Trustee or any predecessor trustee, shall be
      repaid by the Issuer upon demand;

            (g) the Trustee may execute any of the trusts or powers hereunder or
      perform any duties hereunder either directly or by or through agents or
      attorneys not regularly in its employ and the Trustee shall not be
      responsible for any misconduct or negligence on the part of any such agent
      or attorney appointed with due care by it hereunder; and

            (h) except for the defaults set forth in Section 4.1(a), (b) and
      (c), the Trustee will not have knowledge of a default unless notified
      thereof.


                                       43

<PAGE>   51
            SECTION 5.3 Trustee Not Responsible for Recitals, Disposition of
Securities or Application of Proceeds Thereof. The recitals contained herein and
in the Securities, except the Trustee's certificates of authentication, shall be
taken as the statements of the Issuer, and the Trustee assumes no responsibility
for the correctness of the same. The Trustee makes no representation as to the
validity or sufficiency of this Indenture or of the Securities. The Trustee
shall not be accountable for the use or application by the Issuer of any of the
Securities or of the proceeds thereof.

            SECTION 5.4 Trustee and Agents May Hold Securities; Collections,
etc. The Trustee or any agent of the Issuer or the Trustee, in its individual or
any other capacity, may become the owner or pledgee of Securities with the same
rights it would have if it were not the Trustee or such agent and may otherwise
deal with the Issuer and receive, collect, hold and retain collections from the
Issuer with the same rights it would have if it were not the Trustee or such
agent.

            SECTION 5.5 Moneys Held by Trustee. Subject to the provisions of
Section 9.4 hereof, all moneys received by the Trustee shall, until used or
applied as herein provided, be held in trust for the purposes for which they
were received, but need not be segregated from other funds except to the extent
required by mandatory provisions of law. Neither the Trustee nor any agent of
the Issuer or the Trustee shall be under any liability for interest on any
moneys received by it hereunder.

            SECTION 5.6 Compensation and Indemnification of Trustee and Its
Prior Claim. The Issuer covenants and agrees to pay to the Trustee from time to
time, and the Trustee shall be entitled to, reasonable compensation (which shall
not be limited by any provision of law in regard to the compensation of a
trustee of an express trust) and the Issuer covenants and agrees to pay or
reimburse the Trustee and each predecessor Trustee upon its request for all
reasonable expenses, disbursements and advances incurred or made by or on behalf
of it in accordance with any of the provisions of this Indenture (including the
reasonable compensation and the expenses and disbursements of its counsel and of
all agents and other persons not regularly in its employ) except to the extent
any such expense, disbursement or advance may arise from its negligence or bad
faith. The Issuer also covenants to indemnify the Trustee and each predecessor
Trustee for, and to hold it harmless against, any loss, liability or expense
arising out of or in connection with the acceptance or administration of this
Indenture


                                       44

<PAGE>   52
or the trusts hereunder and the performance of its duties hereunder, including
the costs and expenses of defending itself against or investigating any claim of
liability in the premises, except to the extent such loss, liability or expense
is due to the negligence or bad faith of the Trustee or such predecessor
Trustee. The obligations of the Issuer under this Section to compensate and
indemnify the Trustee and each predecessor Trustee and to pay or reimburse the
Trustee and each predecessor Trustee for expenses, disbursements and advances
shall constitute additional indebtedness hereunder and shall survive the
satisfaction and discharge of this Indenture. Such additional indebtedness shall
be a senior claim to that of the Securities upon all property and funds held or
collected by the Trustee as such, except funds held in trust for the benefit of
the holders of particular Securities, and the Securities are hereby subordinated
to such senior claim.

            SECTION 5.7 Right of Trustee to Rely on Officers' Certificate, etc.
Subject to Sections 5.1 and 5.2, whenever in the administration of the trusts of
this Indenture the Trustee shall deem it necessary or desirable that a matter be
proved or established prior to taking or suffering or omitting any action
hereunder, such matter (unless other evidence in respect thereof be herein
specifically prescribed) may, in the absence of negligence or bad faith on the
part of the Trustee, be deemed to be conclusively proved and established by an
Officers' Certificate delivered to the Trustee, and such certificate, in the
absence of negligence or bad faith on the part of the Trustee, shall be full
warrant to the Trustee for any action taken, suffered or omitted by it under the
provisions of this Indenture upon the faith thereof.

            SECTION 5.8 Persons Eligible for Appointment as Trustee. The Trustee
for each series of Securities hereunder shall at all times be a corporation
having a combined capital and surplus of at least $50,000,000, and which is
eligible in accordance with the provisions of Section 310(a) of the Trust
Indenture Act of 1939. If such corporation publishes reports of condition at
least annually, pursuant to law or to the requirements of a Federal, State or
District of Columbia supervising or examining authority, then for the purposes
of this Section, the combined capital and surplus of such corporation shall be
deemed to be its combined capital and surplus as set forth in its most recent
report of condition so published.

            SECTION 5.9 Resignation and Removal; Appointment of Successor
Trustee. (a) The Trustee, or any trustee or trustees hereafter appointed, may at
any time resign with


                                       45

<PAGE>   53
respect to one or more or all series of Securities by giving written notice of
resignation to the Issuer and by mailing notice thereof by first class mail to
Holders of the applicable series of Securities at their last addresses as they
shall appear on the Security register. Upon receiving such notice of
resignation, the Issuer shall promptly appoint a successor trustee or trustees
with respect to the applicable series by written instrument in duplicate,
executed by authority of the Board of Directors, one copy of which instrument
shall be delivered to the resigning Trustee and one copy to the successor
trustee or trustees. If no successor trustee shall have been so appointed with
respect to any series and have accepted appointment within 30 days after the
mailing of such notice of resignation, the resigning trustee may petition any
court of competent jurisdiction for the appointment of a successor trustee, or
any Securityholder who has been a bona fide Holder of a Security or Securities
of the applicable series for at least six months may, subject to the provisions
of Section 4.12, on behalf of himself and all others similarly situated,
petition any such court for the appointment of a successor trustee. Such court
may thereupon, after such notice, if any, as it may deem proper and prescribe,
appoint a successor trustee.

            (b) In case at any time any of the following shall occur:

            (i) the Trustee shall fail to comply with the provisions of Section
      310(b) of the Trust Indenture Act of 1939 with respect to any series of
      Securities after written request therefor by the Issuer or by any
      Securityholder who has been a bona fide Holder of a Security or
      Securities of such series for at least six months; or

            (ii) the Trustee shall cease to be eligible in accordance with the
      provisions of Section 310(a) of the Trust Indenture Act of 1939 and shall
      fail to resign after written request therefor by the Issuer or by any
      Securityholder; or

            (iii) the Trustee shall become incapable of acting with respect to
      any series of Securities, or shall be adjudged a bankrupt or insolvent, or
      a receiver or liquidator of the Trustee or of its property shall be
      appointed, or any public officer shall take charge or control of the
      Trustee or of its property or affairs for the purpose of rehabilitation,
      conservation or liquidation;


                                       46

<PAGE>   54
then, in any such case, the Issuer may remove the Trustee with respect to the
applicable series of Securities and appoint a successor trustee for such series
by written instrument, in duplicate, executed by order of the Board of Directors
of the Issuer, one copy of which instrument shall be delivered to the Trustee so
removed and one copy to the successor trustee, or, subject to Section 315(e) of
the Trust Indenture Act of 1939, any Securityholder who has been a bona fide
Holder of a Security or Securities of such series for at least six months may on
behalf of himself and all others similarly situated, petition any court of
competent jurisdiction for the removal of the Trustee and the appointment of a
successor trustee with respect to such series. Such court may thereupon, after
such notice, if any, as it may deem proper and prescribe, remove the Trustee and
appoint a successor trustee.

            (c) The Holders of a majority in aggregate principal amount of the
Securities of each series at the time outstanding may at any time remove the
Trustee with respect to Securities of such series and appoint a successor
trustee with respect to the Securities of such series by delivering to the
Trustee so removed, to the successor trustee so appointed and to the Issuer the
evidence provided for in Section 6.1 of the action in that regard taken by the
Securityholders.

            (d) Any resignation or removal of the Trustee with respect to any
series and any appointment of a successor trustee with respect to such series
pursuant to any of the provisions of this Section 5.9 shall become effective
upon acceptance of appointment by the successor trustee as provided in Section
5.10.

            SECTION 5.10 Acceptance of Appointment by Successor Trustee. Any
successor trustee appointed as provided in Section 5.9 shall execute and deliver
to the Issuer and to its predecessor trustee an instrument accepting such
appointment hereunder, and thereupon the resignation or removal of the
predecessor trustee with respect to all or any applicable series shall become
effective and such successor trustee, without any further act, deed or
conveyance, shall become vested with all rights, powers, duties and obligations
with respect to such series of its predecessor hereunder, with like effect as if
originally named as trustee for such series hereunder; but, nevertheless, on the
written request of the Issuer or of the successor trustee, upon payment of its
charges then unpaid, the trustee ceasing to act shall, subject to Section 9.4,
pay over to the successor trustee all moneys at the time held by it hereunder
and shall execute and deliver an


                                       47

<PAGE>   55
instrument transferring to such successor trustee all such rights, powers,
duties and obligations. Upon request of any such successor trustee, the Issuer
shall execute any and all instruments in writing for more fully and certainly
vesting in and confirming to such successor trustee all such rights and powers.
Any trustee ceasing to act shall, nevertheless, retain a prior claim upon all
property or funds held or collected by such trustee to secure any amounts then
due it pursuant to the provisions of Section 5.6.

            If a successor trustee is appointed with respect to the Securities
of one or more (but not all) series, the Issuer, the predecessor Trustee and
each successor trustee with respect to the Securities of any applicable series
shall execute and deliver an indenture supplemental hereto which shall contain
such provisions as shall be deemed necessary or desirable to confirm that all
the rights, powers, trusts and duties of the predecessor Trustee with respect to
the Securities of any series as to which the predecessor Trustee is not retiring
shall continue to be vested in the predecessor Trustee, and shall add to or
change any of the provisions of this Indenture as shall be necessary to provide
for or facilitate the administration of the trusts hereunder by more than one
trustee, it being understood that nothing herein or in such supplemental
indenture shall constitute such trustees co-trustees of the same trust and that
each such trustee shall be trustee of a trust or trusts under separate
indentures.

            Upon acceptance of appointment by any successor trustee as provided
in this Section 5.10, the Issuer shall mail notice thereof by first-class mail
to the Holders of Securities of any series for which such successor trustee is
acting as trustee at their last addresses as they shall appear in the Security
register. If the acceptance of appointment is substantially contemporaneous with
the resignation, then the notice called for by the preceding sentence may be
combined with the notice called for by Section 5.9. If the Issuer fails to mail
such notice within ten days after acceptance of appointment by the successor
trustee, the successor trustee shall cause such notice to be mailed at the
expense of the Issuer.

            SECTION 5.11 Merger, Conversion, Consolidation or Succession to
Business of Trustee. Any corporation into which the Trustee may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which the Trustee shall be a
party, or any corporation succeeding to the corporate trust business of the
Trustee, shall be the successor of the Trustee hereunder, provided that such


                                       48

<PAGE>   56
corporation shall be eligible under the provisions of Section 5.8, without the
execution or filing of any paper or any further act on the part of any of the
parties hereto, anything herein to the contrary notwithstanding.

            In case at the time such successor to the Trustee shall succeed to
the trusts created by this Indenture any of the Securities of any series shall
have been authenticated but not delivered, any such successor to the Trustee may
adopt the certificate of authentication of any predecessor Trustee and deliver
such Securities so authenticated; and, in case at that time any of the
Securities of any series shall not have been authenticated, any successor to the
Trustee may authenticate such Securities either in the name of any predecessor
hereunder or in the name of the successor Trustee; and in all such cases such
certificate shall have the full force which it is anywhere in the Securities of
such series or in this Indenture provided that the certificate of the Trustee
shall have; provided, that the right to adopt the certificate of authentication
of any predecessor Trustee or to authenticate Securities of any series in the
name of any predecessor Trustee shall apply only to its successor or successors
by merger, conversion or consolidation.


                                   ARTICLE SIX

                         CONCERNING THE SECURITYHOLDERS

            SECTION 6.1 Evidence of Action Taken by Securityholders. Any
request, demand, authorization, direction, notice, consent, waiver or other
action provided by this Indenture to be given or taken by a specified percentage
in principal amount of the Securityholders of any or all series may be embodied
in and evidenced by one or more instruments of substantially similar tenor
signed by such specified percentage of Securityholders in person or by agent
duly appointed in writing; and, except as herein otherwise expressly provided,
such action shall become effective when such instrument or instruments are
delivered to the Trustee. Proof of execution of any instrument or of a writing
appointing any such agent shall be sufficient for any purpose of this Indenture
and (subject to Sections 5.1 and 5.2) conclusive in favor of the Trustee and the
Issuer, if made in the manner provided in this Article.

            SECTION 6.2 Proof of Execution of Instruments and of Holding of
Securities; Record Date. Subject to Sections 5.1 and 5.2, the execution of any
instrument by a Securityholder or his agent or proxy may be proved in
accordance


                                       49

<PAGE>   57
with such reasonable rules and regulations as may be prescribed by the Trustee
or in such manner as shall be satisfactory to the Trustee. The holding of
Securities shall be proved by the Security register or by a certificate of the
registrar thereof. The Issuer may set a record date for purposes of determining
the identity of holders of Securities of any series entitled to vote or consent
to any action referred to in Section 6.1, which record date may be set at any
time or from time to time by notice to the Trustee, for any date or dates (in
the case of any adjournment or reconsideration) not more than 60 days nor less
than five days prior to the proposed date of such vote or consent, and
thereafter, notwithstanding any other provisions hereof, only holders of
Securities of such series of record on such record date shall be entitled to so
vote or give such consent or revoke such vote or consent.

            SECTION 6.3 Holders to be Treated as Owners. The Issuer, the Trustee
and any agent of the Issuer or the Trustee may deem and treat the person in
whose name any Security shall be registered upon the Security register for such
series as the absolute owner of such Security (whether or not such Security
shall be overdue and notwithstanding any notation of ownership or other writing
thereon) for the purpose of receiving payment of or on account of the principal
of and, subject to the provisions of this Indenture, interest on such Security
and for all other purposes; and neither the Issuer nor the Trustee nor any agent
of the Issuer or the Trustee shall be affected by any notice to the contrary.
All such payments so made to any such person, or upon his order, shall be valid,
and, to the extent of the sum or sums so paid, effectual to satisfy and
discharge the liability for moneys payable upon any such Security.

            SECTION 6.4 Securities Owned by Issuer Deemed Not Outstanding. In
determining whether the Holders of the requisite aggregate principal amount of
Outstanding Securities of any or all series have concurred in any direction,
consent or waiver under this Indenture, Securities which are owned by the Issuer
or any other obligor on the Securities with respect to which such determination
is being made or by any person directly or indirectly controlling or controlled
by or under direct or indirect common control with the Issuer or any other
obligor on the Securities with respect to which such determination is being made
shall be disregarded and deemed not to be Outstanding for the purpose of any
such determination, except that for the purpose of determining whether the
Trustee shall be protected in relying on any such direction, consent or waiver
only Securities which the Trustee knows are so owned shall be so disregarded.
Securities so owned which have been pledged in


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<PAGE>   58
good faith may be regarded as Outstanding if the pledgee establishes to the
satisfaction of the Trustee the pledgee's right so to act with respect to such
Securities and that the pledgee is not the Issuer or any other obligor upon the
Securities or any person directly or indirectly controlling or controlled by or
under direct or indirect common control with the Issuer or any other obligor on
the Securities. In case of a dispute as to such right, the advice of counsel
shall be full protection in respect of any decision made by the Trustee in
accordance with such advice. Upon request of the Trustee, the Issuer shall
furnish to the Trustee promptly an Officers' Certificate listing and identifying
all Securities, if any, known by the Issuer to be owned or held by or for the
account of any of the above-described persons; and, subject to Sections 5.1 and
5.2, the Trustee shall be entitled to accept such Officers' Certificate as
conclusive evidence of the facts therein set forth and of the fact that all
Securities not listed therein are Outstanding for the purpose of any such
determination.

            SECTION 6.5 Right of Revocation of Action Taken. At any time prior
to (but not after) the evidencing to the Trustee, as provided in Section 6.1, of
the taking of any action by the Holders of the percentage in aggregate principal
amount of the Securities of any or all series, as the case may be, specified in
this Indenture in connection with such action, any Holder of a Security the
serial number of which is shown by the evidence to be included among the serial
numbers of the Securities the Holders of which have consented to such action
may, by filing written notice at the Corporate Trust Office and upon proof of
holding as provided in this Article, revoke such action so far as concerns such
Security. Except as aforesaid any such action taken by the Holder of any
Security shall be conclusive and binding upon such Holder and upon all future
Holders and owners of such Security and of any Securities issued in exchange or
substitution therefor, irrespective of whether or not any notation in regard
thereto is made upon any such Security. Any action taken by the Holders of the
percentage in aggregate principal amount of the Securities of any or all series,
as the case may be, specified in this Indenture in connection with such action
shall be conclusively binding upon the Issuer, the Trustee and the Holders of
all the Securities affected by such action.


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<PAGE>   59
                                  ARTICLE SEVEN

                             SUPPLEMENTAL INDENTURES

            SECTION 7.1 Supplemental Indentures Without Consent of
Securityholders. The Issuer, when authorized by a resolution of its Board of
Directors, and the Trustee may from time to time and at any time enter into an
indenture or indentures supplemental hereto for one or more of the following
purposes:

            (a) to convey, transfer, assign, mortgage or pledge to the Trustee
      as security for the Securities of one or more series any property or
      assets;

            (b) to evidence the succession of another corporation to the Issuer,
      or successive successions, and the assumption by the successor corporation
      of the covenants, agreements and obligations of the Issuer pursuant to
      Article Eight;

            (c) to add to the covenants of the Issuer such further covenants,
      restrictions, conditions or provisions as its Board of Directors and the
      Trustee shall consider to be for the protection of the Holders of
      Securities, and to make the occurrence, or the occurrence and continuance,
      of a default in any such additional covenants, restrictions, conditions or
      provisions an Event of Default permitting the enforcement of all or any of
      the several remedies provided in this Indenture as herein set forth;
      provided, that in respect of any such additional covenant, restriction,
      condition or provision such supplemental indenture may provide for a
      particular period of grace after default (which period may be shorter or
      longer than that allowed in the case of other defaults) or may provide for
      an immediate enforcement upon such an Event of Default or may limit the
      remedies available to the Trustee upon such an Event of Default or may
      limit the right of the Holders of a majority in aggregate principal amount
      of the Securities of such series to waive such an Event of Default;

            (d) to cure any ambiguity or to correct or supplement any provision
      contained herein or in any supplemental indenture which may be defective
      or inconsistent with any other provision contained herein or in any
      supplemental indenture; or to make such other provisions in regard to
      matters or questions arising under this Indenture or under any
      supplemental


                                       52

<PAGE>   60
      indenture as the Board of Directors may deem necessary or desirable and
      which shall not adversely affect the interests of the Holders of the
      Securities in any material respect;

            (e) to establish the form or terms of Securities of any series as
      permitted by Sections 2.1 and 2.3; and

            (f) to evidence and provide for the acceptance of appointment
      hereunder by a successor trustee with respect to the Securities of one or
      more series and to add to or change any of the provisions of this
      Indenture as shall be necessary to provide for or facilitate the
      administration of the trusts hereunder by more than one trustee, pursuant
      to the requirements of Section 5.10.

            The Trustee is hereby authorized to join with the Issuer in the
execution of any such supplemental indenture, to make any further appropriate
agreements and stipulations which may be therein contained and to accept the
conveyance, transfer, assignment, mortgage or pledge of any property thereunder,
but the Trustee shall not be obligated to enter into any such supplemental
indenture which affects the Trustee's own rights, duties or immunities under
this Indenture or otherwise.

            Any supplemental indenture authorized by the provisions of this
Section may be executed without the consent of the Holders of any of the
Securities at the time outstanding, notwithstanding any of the provisions of
Section 7.2.

            SECTION 7.2 Supplemental Indentures With Consent of Securityholders.
With the consent (evidenced as provided in Article Six) of the Holders of not
less than 66 2/3 percent in aggregate principal amount of the Securities at the
time Outstanding of all series affected by such supplemental indenture (voting
as one class), the Issuer, when authorized by a resolution of its Board of
Directors, and the Trustee may, from time to time and at any time, enter into an
indenture or indentures supplemental hereto for the purpose of adding any
provisions to or changing in any manner or eliminating any of the provisions of
this Indenture or of any supplemental indenture or of modifying in any manner
the rights of the Holders of the Securities of each such series; provided, that
no such supplemental indenture shall (a) extend the final maturity of any
Security, or reduce the principal amount thereof, or reduce the rate or extend
the time of payment of interest thereon, or reduce any amount payable on
redemption thereof or reduce


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<PAGE>   61
the amount of the principal of an Original Issue Discount Security that would be
due and payable upon an acceleration of the maturity thereof pursuant to Section
4.1 or the amount thereof provable in bankruptcy pursuant to Section 4.2, or
impair or affect the right of any Securityholder to institute suit for the
payment thereof or, if the Securities provide therefor, any right of repayment
at the option of the Securityholder without the consent of the Holder of each
Security so affected, or (b) reduce the aforesaid percentage of Securities of
any series, the consent of the Holders of which is required for any such
supplemental indenture, without the consent of the Holders of each Security so
affected.

            Upon the request of the Issuer, accompanied by a copy of a
resolution of the Board of Directors certified by the secretary or an assistant
secretary of the Issuer authorizing the execution of any such supplemental
indenture, and upon the filing with the Trustee of evidence of the consent of
Securityholders as aforesaid and other documents, if any, required by Section
6.1, the Trustee shall join with the Issuer in the execution of such
supplemental indenture unless such supplemental indenture affects the Trustee's
own rights, duties or immunities under this Indenture or otherwise, in which
case the Trustee may in its discretion, but shall not be obligated to, enter
into such supplemental indenture.

            It shall not be necessary for the consent of the Securityholders
under this Section to approve the particular form of any proposed supplemental
indenture, but it shall be sufficient if such consent shall approve the
substance thereof.

            Promptly after the execution by the Issuer and the Trustee of any
supplemental indenture pursuant to the provisions of this Section, the Issuer
shall mail a notice thereof by first class mail to the Holders of Securities of
each series affected thereby at their addresses as they shall appear on the
registry books of the Issuer, setting forth in general terms the substance of
such supplemental indenture. Any failure of the Issuer to mail such notice, or
any defect therein, shall not, however, in any way impair or affect the validity
of any such supplemental indenture.

            SECTION 7.3 Effect of Supplemental Indenture. Upon the execution of
any supplemental indenture pursuant to the provisions hereof, this Indenture
shall be and be deemed to be modified and amended in accordance therewith and
the respective rights, limitations of rights, obligations, duties and immunities
under this Indenture of the Trustee,


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<PAGE>   62
the Issuer and the Holders of Securities of each series affected thereby shall
thereafter be determined, exercised and enforced hereunder subject in all
respects to such modifications and amendments, and all the terms and conditions
of any such supplemental indenture shall be and be deemed to be part of the
terms and conditions of this Indenture for any and all purposes.

            SECTION 7.4 Documents to Be Given to Trustee. The Trustee, subject
to the provisions of Sections 5.1 and 5.2, may receive an Officers' Certificate
and an Opinion of Counsel as conclusive evidence that any supplemental indenture
executed pursuant to this Article Seven complies with the applicable provisions
of this Indenture.

            SECTION 7.5 Notation on Securities in Respect of Supplemental
Indentures. Securities of any series authenticated and delivered after the
execution of any supplemental indenture pursuant to the provisions of this
Article may bear a notation in form approved by the Trustee for such series as
to any matter provided for by such supplemental indenture or as to any action
taken at any such meeting. If the Issuer or the Trustee shall so determine, new
Securities of any series so modified as to conform, in the opinion of the
Trustee and the Board of Directors, to any modification of this Indenture
contained in any such supplemental indenture may be prepared by the Issuer,
authenticated by the Trustee and delivered in exchange for the Securities of
such series then outstanding.


                                  ARTICLE EIGHT

                    CONSOLIDATION, MERGER, SALE OR CONVEYANCE

            SECTION 8.1 Issuer May Consolidate, etc., on Certain Terms. The
Issuer covenants that it will not merge or consolidate with any other
corporation or sell, lease or convey all or substantially all of its assets to
any Person, unless (i) either the Issuer shall be the continuing corporation, or
the successor corporation or the Person which acquires by sale, lease or
conveyance substantially all the assets of the Issuer (if other than the Issuer)
shall be a corporation organized under the laws of the United States of America
or any State thereof or the District of Columbia and shall expressly assume the
due and punctual payment of the principal of and interest on all the Securities,
according to their tenor, and the due and punctual performance and observance of
all of the covenants and conditions of this Indenture to be performed or
observed by the Issuer, by supplemental indenture satisfactory to the


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<PAGE>   63
Trustee, executed and delivered to the Trustee by such corporation, and (ii) the
Issuer or such successor corporation, as the case may be, shall not, immediately
after such merger or consolidation, or such sale, lease or conveyance, be in
default in the performance of any such covenant or condition.

            SECTION 8.2 Successor Corporation Substituted. In case of any such
consolidation, merger, sale or conveyance, and following such an assumption by
the successor corporation, such successor corporation shall succeed to and be
substituted for the Issuer, with the same effect as if it had been named herein.
Such successor corporation may cause to be signed, and may issue either in its
own name or in the name of the Issuer prior to such succession any or all of the
Securities issuable hereunder which theretofore shall not have been signed by
the Issuer and delivered to the Trustee; and, upon the order of such successor
corporation instead of the Issuer and subject to all the terms, conditions and
limitations in this Indenture prescribed, the Trustee shall authenticate and
shall deliver any Securities which previously shall have been signed and
delivered by the officers of the Issuer to the Trustee for authentication, and
any Securities which such successor corporation thereafter shall cause to be
signed and delivered to the Trustee for that purpose. All of the Securities so
issued shall in all respects have the same legal rank and benefit under this
Indenture as the Securities theretofore or thereafter issued in accordance with
the terms of this Indenture as though all of such Securities had been issued at
the date of the execution hereof.

            In case of any such consolidation, merger, sale, lease or conveyance
such changes in phraseology and form (but not in substance) may be made in the
Securities thereafter to be issued as may be appropriate.

            In the event of any such sale or conveyance (other than a conveyance
by way of lease) the Issuer or any successor corporation which shall theretofore
have become such in the manner described in this Article shall be discharged
from all obligations and covenants under this Indenture and the Securities and
may be liquidated and dissolved.

            SECTION 8.3 Opinion of Counsel to Trustee. The Trustee, subject to
the provisions of Sections 5.1 and 5.2, may receive an Opinion of Counsel,
prepared in accordance with Section 10.5, as conclusive evidence that any such
consolidation, merger, sale, lease or conveyance, and any


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<PAGE>   64
such assumption, and any such liquidation or dissolution, complies with the
applicable provisions of this Indenture.


                                  ARTICLE NINE

                    SATISFACTION AND DISCHARGE OF INDENTURE;
                                UNCLAIMED MONEYS.

            SECTION 9.1 Satisfaction and Discharge of Indenture. If at any time
(a) the Issuer shall have paid or caused to be paid the principal of and
interest on all the Securities of any series outstanding hereunder (other than
Securities of such series which have been destroyed, lost or stolen and which
have been replaced or paid as provided in Section 2.9) as and when the same
shall have become due and payable, or (b) the Issuer shall have delivered to the
Trustee for cancellation all securities of any series theretofore authenticated
(other than any Securities of such series which shall have been destroyed, lost
or stolen and which shall have been replaced or paid as provided in Section 2.9)
or (c) (i) all the securities of such series not theretofore delivered to the
Trustee for cancellation shall have become due and payable, or are by their
terms to become due and payable within one year or are to be called for
redemption within one year under arrangements satisfactory to the Trustee for
the giving of notice of redemption, and (ii) the Issuer shall have irrevocably
deposited or caused to be deposited with the Trustee as trust funds the entire
amount in cash (other than moneys repaid by the Trustee or any paying agent to
the Issuer in accordance with Section 9.4) sufficient to pay at maturity or upon
redemption all Securities of such series (other than any Securities of such
series which shall have been destroyed, lost or stolen and which shall have been
replaced or paid as provided in Section 2.9) not theretofore delivered to the
Trustee for cancellation, including principal and interest due or to become due
on or prior to such date of maturity as the case may be, and if, in any such
case, the Issuer shall also pay or cause to be paid all other sums payable
hereunder by the Issuer with respect to Securities of such series, then this
Indenture shall cease to be of further effect with respect to Securities of such
series (except as to (i) rights of registration of transfer and exchange of
securities of such series, and the Issuer's right of optional redemption, if
any, (ii) substitution of mutilated, defaced, destroyed, lost or stolen
Securities, (iii) rights of holders to receive payments of principal thereof and
interest thereon, and remaining rights of the holders to receive mandatory
sinking fund payments, if any, (iv) the rights, obligations and immunities of
the Trustee


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<PAGE>   65
hereunder and (v) the rights of the Securityholders of such series as
beneficiaries hereof with respect to the property so deposited with the Trustee
payable to all or any of them), and the Trustee, on demand of the Issuer
accompanied by an Officers' Certificate and an Opinion of Counsel and at the
cost and expense of the Issuer, shall execute proper instruments acknowledging
such satisfaction of and discharging this Indenture with respect to such series;
provided, that the rights of Holders of the Securities to receive amounts in
respect of principal of and interest on the Securities held by them shall not be
delayed longer than required by then-applicable mandatory rules or policies of
any securities exchange upon which the Securities are listed. The Issuer agrees
to reimburse the Trustee for any costs or expenses thereafter reasonably and
properly incurred and to compensate the Trustee for any services thereafter
reasonably and properly rendered by the Trustee in connection with this
Indenture or the Securities of such series.

            SECTION 9.2 Application by Trustee of Funds Deposited for Payment of
Securities. Subject to Section 9.4, all moneys deposited with the Trustee
pursuant to Section 9.1 shall be held in trust and applied by it to the payment,
either directly or through any paying agent (including the Issuer acting as its
own paying agent), to the Holders of the particular Securities of such series
for the payment or redemption of which such moneys have been deposited with the
Trustee, of all sums due and to become due thereon for principal and interest;
but such money need not be segregated from other funds except to the extent
required by law.

            SECTION 9.3 Repayment of Moneys Held by Paying Agent. In connection
with the satisfaction and discharge of this Indenture with respect to Securities
of any series, all moneys then held by any paying agent under the provisions of
this Indenture with respect to such series of Securities shall, upon demand of
the Issuer, be repaid to it or paid to the Trustee and thereupon such paying
agent shall be released from all further liability with respect to such moneys.

            SECTION 9.4 Return of Moneys Held by Trustee and Paying Agent
Unclaimed for Three Years. Any moneys deposited with or paid to the Trustee or
any paying agent for the payment of the principal of or interest on any Security
of any series and not applied but remaining unclaimed for three years after the
date upon which such principal or interest shall have become due and payable,
shall, upon the written request of the Issuer and unless


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<PAGE>   66
otherwise required by mandatory provisions of applicable escheat or abandoned or
unclaimed property law, be repaid to the Issuer by the Trustee for such series
or such paying agent, and the Holder of the Security of such series shall,
unless otherwise required by mandatory provisions of applicable escheat or
abandoned or unclaimed property laws, thereafter look only to the Issuer for any
payment which such Holder may be entitled to collect, and all liability of the
Trustee or any paying agent with respect to such moneys shall thereupon cease.


                                   ARTICLE TEN

                            MISCELLANEOUS PROVISIONS

            SECTION 10.1 Incorporators, Stockholders, Officers and Directors of
Issuer Exempt from Individual Liability. No recourse under or upon any
obligation, covenant or agreement contained in this Indenture, or in any
Security, or because of any indebtedness evidenced thereby, shall be had against
any incorporator, as such or against any past, present or future stockholder,
officer or director, as such, of the Issuer or of any successor, either directly
or through the Issuer or any successor, under any rule of law, statute or
constitutional provision or by the enforcement of any assessment or by any legal
or equitable proceeding or otherwise, all such liability being expressly waived
and released by the acceptance of the Securities by the holders thereof and as
part of the consideration for the issue of the Securities.

            SECTION 10.2 Provisions of Indenture for the Sole Benefit of Parties
and Securityholders. Nothing in this Indenture or in the Securities, expressed
or implied, shall give or be construed to give to any person, firm or
corporation, other than the parties hereto and their successors and the Holders
of the Securities, any legal or equitable right, remedy or claim under this
Indenture or under any covenant or provision herein contained, all such
covenants and provisions being for the sole benefit of the parties hereto and
their successors and of the Holders of the Securities.

            SECTION 10.3 Successors and Assigns of Issuer Bound by Indenture.
All the covenants, stipulations, promises and agreements in this Indenture
contained by or in behalf of the Issuer shall bind its successors and assigns,
whether so expressed or not.


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<PAGE>   67
            SECTION 10.4 Notices and Demands on Issuer, Trustee and
Securityholders. Any notice or demand which by any provision of this Indenture
is required or permitted to be given or served by the Trustee or by the Holders
of Securities to or on the Issuer may be given or served by being deposited
postage prepaid, first-class mail (except as otherwise specifically provided
herein) addressed (until another address of the Issuer is filed by the Issuer
with the Trustee) to Cardinal Health, Inc., 5555 Glendon Court, Dublin, Ohio
43016, Attention: Chairman. Any notice, direction, request or demand by the
Issuer or any Securityholder to or upon the Trustee shall be deemed to have been
sufficiently given or made, for all purposes, if given or made at the Corporate
Trust Office.

            Where this Indenture provides for notice to Holders, such notice
shall be sufficiently given (unless otherwise herein expressly provided) if in
writing and mailed, first-class postage prepaid, to each Holder entitled
thereto, at his last address as it appears in the Security register. In any case
where notice to Holders is given by mail, neither the failure to mail such
notice, nor any defect in any notice so mailed, to any particular Holder shall
affect the sufficiency of such notice with respect to other Holders. Where this
Indenture provides for notice in any manner, such notice may be waived in
writing by the person entitled to receive such notice, either before or after
the event, and such waiver shall be the equivalent of such notice. Waivers of
notice by Holders shall be filed with the Trustee, but such filing shall not be
a condition precedent to the validity of any action taken in reliance upon such
waiver.

            In case, by reason of the suspension of or irregularities in regular
mail service, it shall be impracticable to mail notice to the Issuer and
Securityholders when such notice is required to be given pursuant to any
provision of this Indenture, then any manner of giving such notice as shall be
satisfactory to the Trustee shall be deemed to be a sufficient giving of such
notice.

            SECTION 10.5 Officers' Certificates and Opinions of Counsel;
Statements to Be Contained Therein. Upon any application or demand by the Issuer
to the Trustee to take any action under any of the provisions of this Indenture,
the Issuer shall furnish to the Trustee an Officers' Certificate stating that
all conditions precedent provided for in this Indenture relating to the proposed
action have been complied with and an Opinion of Counsel stating that in the
opinion of such counsel all such conditions precedent have been complied with,
except that in the case of any such


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<PAGE>   68
application or demand as to which the furnishing of such documents is
specifically required by any provision of this Indenture relating to such
particular application or demand, no additional certificate or opinion need be
furnished.

            Each certificate or opinion provided for in this Indenture and
delivered to the Trustee with respect to compliance with a condition or covenant
provided for in this Indenture shall include (a) a statement that the person
making such certificate or opinion has read such covenant or condition, (b) a
brief statement as to the nature and scope of the examination or investigation
upon which the statements or opinions contained in such certificate or opinion
are based, (c) a statement that, in the opinion of such person, he has made such
examination or investigation as is necessary to enable him to express an
informed opinion as to whether or not such covenant or condition has been
complied with and (d) a statement as to whether or not, in the opinion of such
person, such condition or covenant has been complied with.

            Any certificate, statement or opinion of an officer of the Issuer
may be based, insofar as it relates to legal matters, upon a certificate or
opinion of or representations by counsel, unless such officer knows that the
certificate or opinion or representations with respect to the matters upon which
his certificate, statement or opinion may be based as aforesaid are erroneous,
or in the exercise of reasonable care should know that the same are erroneous.
Any certificate, statement or opinion of counsel may be based, insofar as it
relates to factual matters, information with respect to which is in the
possession of the Issuer, upon the certificate, statement or opinion of or
representations by an officer of officers of the Issuer, unless such counsel
knows that the certificate, statement or opinion or representations with respect
to the matters upon which his certificate, statement or opinion may be based as
aforesaid are erroneous, or in the exercise of reasonable care should know that
the same are erroneous.

            Any certificate, statement or opinion of an officer of the Issuer or
of counsel may be based, insofar as it relates to accounting matters, upon a
certificate or opinion of or representations by an accountant or firm of
accountants in the employ of the Issuer, unless such officer or counsel, as the
case may be, knows that the certificate or opinion or representations with
respect to the accounting matters upon which his certificate, statement or
opinion may be based as aforesaid are erroneous, or in the exercise of
reasonable care should know that the same are erroneous.


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<PAGE>   69
            Any certificate or opinion of any independent firm of public
accountants filed with the Trustee shall contain a statement that such firm is
independent.

            SECTION 10.6 Payments Due on Saturdays, Sundays and Holidays. If the
date of maturity of interest on or principal of the Securities of any series or
the date fixed for redemption or repayment of any such Security shall not be a
Business Day, then payment of interest or principal need not be made on such
date, but may be made on the next succeeding Business Day with the same force
and effect as if made on the date of maturity or the date fixed for redemption,
and no interest shall accrue for the period after such date.

            SECTION 10.7 Conflict of Any Provision of Indenture with Trust
Indenture Act of 1939. If and to the extent that any provision of this Indenture
limits, qualifies or conflicts with another provision included in this Indenture
by operation of Sections 310 to 317, inclusive, of the Trust Indenture Act of
1939 (an "incorporated provision"), such incorporated provision shall control.

            SECTION 10.8 Ohio Law to Govern. This Indenture and each Security
shall be deemed to be a contract under the laws of the State of Ohio, and for
all purposes shall be construed in accordance with the laws of such State,
except as may otherwise be required by mandatory provisions of law.

            SECTION 10.9 Counterparts. This Indenture may be executed in any
number of counterparts, each of which shall be an original; but such
counterparts shall together constitute but one and the same instrument.

            SECTION 10.10 Effect of Headings. The Article and Section headings
herein and the Table of Contents are for convenience only and shall not affect
the construction hereof.


                                 ARTICLE ELEVEN

                   REDEMPTION OF SECURITIES AND SINKING FUNDS

            SECTION 11.1 Applicability of Article. The provisions of this
Article shall be applicable to the Securities of any series which are redeemable
before their maturity or to any sinking fund for the retirement of Securities of
a series except as otherwise specified as contemplated by Section 2.3 for
Securities of such series.


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<PAGE>   70
            SECTION 11.2 Notice of Redemption; Partial Redemptions. Notice of
redemption to the Holders of Securities of any series to be redeemed as a whole
or in part at the option of the Issuer shall be given by mailing notice of such
redemption by first class mail, postage prepaid, at least 30 days and not more
than 60 days prior to the date fixed for redemption to such Holders of
Securities of such series at their last addresses as they shall appear upon the
registry books. Any notice which is mailed in the manner herein provided shall
be conclusively presumed to have been duly given, whether or not the Holder
receives the notice. Failure to give notice by mail, or any defect in the notice
to the Holder of any Security of a series designated for redemption as a whole
or in part shall not affect the validity of the proceedings for the redemption
of any other Security of such series.

            The notice of redemption to each such Holder shall specify the
principal amount of each Security of such series held by such Holder to be
redeemed, the date fixed for redemption, the redemption price, the place or
places of payment, that payment will be made upon presentation and surrender of
such Securities, that such redemption is pursuant to the mandatory or optional
sinking fund, or both, if such be the case, that interest accrued to the date
fixed for redemption will be paid as specified in such notice and that on and
after said date interest thereon or on the portions thereof to be redeemed will
cease to accrue. In case any Security of a series is to be redeemed in part only
the notice of redemption shall state the portion of the principal amount thereof
to be redeemed and shall state that on and after the date fixed for redemption,
upon surrender of such Security, a new Security or Securities of such series in
principal amount equal to the unredeemed portion thereof will be issued.

            The notice of redemption of Securities of any series to be redeemed
at the option of the Issuer shall be given by the Issuer or, at the Issuer's
request, by the Trustee in the name and at the expense of the Issuer.

            At least one Business Day prior to the redemption date specified in
the notice of redemption given as provided in this Section, the Issuer will
deposit with the Trustee or with one or more paying agents (or, if the Issuer is
acting as its own paying agent, set aside, segregate and hold in trust as
provided in Section 3.4) an amount of money sufficient to redeem on the
redemption date all the Securities of such series so called for redemption at
the appropriate redemption price, together with accrued interest to the date
fixed for redemption. If less than all the


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<PAGE>   71
outstanding Securities of a series are to be redeemed, the Issuer will deliver
to the Trustee at least 70 days prior to the date fixed for redemption an
Officers' Certificate stating the aggregate principal amount of Securities to be
redeemed.

            If less than all the Securities of a series are to be redeemed, the
Trustee shall select, in such manner as it shall deem appropriate and fair,
Securities of such Series to be redeemed in whole or in part. Securities may be
redeemed in part in multiples equal to the minimum authorized denomination for
Securities of such series or any multiple thereof. The Trustee shall promptly
notify the Issuer in writing of the Securities of such series selected for
redemption and, in the case of any Securities of such series selected for
partial redemption, the principal amount thereof to be redeemed. For all
purposes of this Indenture, unless the context otherwise requires, all
provisions relating to the redemption of Securities of any series shall relate,
in the case of any Security redeemed or to be redeemed only in part, to the
portion of the principal amount of such Security which has been or is to be
redeemed.

            SECTION 11.3 Payment of Securities Called for Redemption. If notice
of redemption has been given as above provided, the Securities or portions of
Securities specified in such notice shall become due and payable on the date and
at the place stated in such notice at the applicable redemption price, together
with interest accrued to the date fixed for redemption, and on and after said
date (unless the Issuer shall default in the payment of such Securities at the
redemption price, together with interest accrued to said date) interest on the
Securities or portions of Securities so called for redemption shall cease to
accrue and, except as provided in Sections 5.5 and 9.4, such Securities shall
cease from and after the date fixed for redemption to be entitled to any benefit
or security under this Indenture, and the Holders thereof shall have no right in
respect of such Securities except the right to receive the redemption price
thereof and unpaid interest to the date fixed for redemption. On presentation
and surrender of such Securities at a place of payment specified in said notice,
said Securities or the specified portions thereof shall be paid and redeemed by
the Issuer at the applicable redemption price, together with interest accrued
thereon to the date fixed for redemption; provided that any semiannual payment
of interest becoming due on the date fixed for redemption shall be payable to
the Holders of such Securities registered as such on the relevant record date
subject to the terms and provisions of Section 2.4 hereof.


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<PAGE>   72
            If any Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal shall, until paid or duly
provided for, bear interest from the date fixed for redemption at the rate of
interest or Yield to Maturity (in the case of an Original Issue Discount
Security) borne by the Security.

            Upon presentation of any Security redeemed in part only, the Issuer
shall execute and the Trustee shall authenticate and deliver to or on the order
of the Holder thereof, at the expense of the Issuer, a new Security or
Securities of such series, of authorized denominations, in principal amount
equal to the unredeemed portion of the Security so presented.

            SECTION 11.4 Exclusion of Certain Securities from Eligibility for
Selection for Redemption. Securities shall be excluded from eligibility for
selection for redemption if they are identified by registration and certificate
number in a written statement signed by an authorized officer of the Issuer and
delivered to the Trustee at least 40 days prior to the last date on which notice
of redemption may be given as being owned of record and beneficially by, and not
pledged or hypothecated by either (a) the Issuer or (b) an entity specifically
identified in such written statement directly or indirectly controlling or
controlled by or under direct or indirect common control with the Issuer.

            SECTION 11.5 Mandatory and Optional Sinking Funds. The minimum
amount of any sinking fund payment provided for by the terms of Securities of
any series is herein referred to as a "mandatory sinking fund payment", and any
payment in excess of such minimum amount provided for by the terms of Securities
of any series is herein referred to as an "optional sinking fund payment". The
date on which a sinking fund payment is to be made is herein referred to as the
"sinking fund payment date".

            In lieu of making all or any part of any mandatory sinking fund
payment with respect to any series of Securities in cash, the Issuer may at its
option (a) deliver to the Trustee Securities of such series theretofore
purchased or otherwise acquired (except upon redemption pursuant to the
mandatory sinking fund) by the Issuer or receive credit for Securities of such
series (not previously so credited) theretofore purchased or otherwise acquired
(except as aforesaid) by the Issuer and delivered to the Trustee for
cancellation pursuant to Section 2.7, (b) receive credit for optional sinking
fund payments (not previously so credited) made pursuant to this Section, or (c)
receive credit for Securities of such series (not


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<PAGE>   73
previously so credited) redeemed by the Issuer through any optional redemption
provision contained in the terms of such series. Securities so delivered or
credited shall be received or credited by the Trustee at the sinking fund
redemption price specified in such Securities.

            On or before the sixtieth day next preceding each sinking fund
payment date for any series, the Issuer will deliver to the Trustee a written
statement (which need not contain the statements required by Section 10.5)
signed by an authorized officer of the Issuer (a) specifying the portion of the
mandatory sinking fund payment to be satisfied by payment of cash and the
portion to be satisfied by credit of Securities of such series, (b) stating that
none of the Securities of such series has theretofore been so credited, (c)
stating that no defaults in the payment of interest or Events of Default with
respect to such series have occurred (which have not been waived or cured) and
are continuing and (d) stating whether or not the Issuer intends to exercise its
right to make an optional sinking fund payment with respect to such series and,
if so, specifying the amount of such optional sinking fund payment which the
Issuer intends to pay on or before the next succeeding sinking fund payment
date. Any Securities of such series to be credited and required to be delivered
to the Trustee in order for the Issuer to be entitled to credit therefor as
aforesaid which have not theretofore been delivered to the Trustee shall be
delivered for cancellation pursuant to Section 2.10 to the Trustee with such
written statement (or reasonably promptly thereafter if acceptable to the
Trustee). Such written statement shall be irrevocable and upon its receipt by
the Trustee the Issuer shall become unconditionally obligated to make all the
cash payments or payments therein referred to, if any, on or before the next
succeeding sinking fund payment date. Failure of the Issuer, on or before any
such sixtieth day, to deliver such written statement and Securities specified in
this paragraph, if any, shall not constitute a default but shall constitute, on
and as of such date, the irrevocable election of the Issuer (i) that the
mandatory sinking fund payment for such series due on the next succeeding
sinking fund payment date shall be paid entirely in cash without the option to
deliver or credit Securities of such series in respect thereof and (ii) that the
Issuer will make no optional sinking fund payment with respect to such series as
provided in this Section.

            If the sinking fund payment or payments (mandatory or optional or
both) to be made in cash on the next succeeding sinking fund payment date plus
any unused balance of any preceding sinking fund payments made in cash shall


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<PAGE>   74
exceed $50,000 (or a lesser sum if the Issuer shall so request) with respect to
the Securities of any particular series, such cash shall be applied on the next
succeeding sinking fund payment date to the redemption of Securities of such
series at the sinking fund redemption price together with accrued interest to
the date fixed for redemption. If such amount shall be $50,000 or less and the
Issuer makes no such request then it shall be carried over until a sum in excess
of $50,000 is available. The Trustee shall select, in the manner provided in
Section 11.2, for redemption on such sinking fund payment date a sufficient
principal amount of Securities of such series to absorb said cash, as nearly as
may be, and shall (if requested in writing by the Issuer) inform the Issuer of
the serial numbers of the Securities of such series (or portions thereof) so
selected. Securities of any series which are (a) owned by the Issuer or an
entity known by the Trustee to be directly or indirectly controlling or
controlled by or under direct or indirect common control with the Issuer, as
shown by the Security register, and not known to the Trustee to have been
pledged or hypothecated by the Issuer or any such entity or (b) identified in an
Officers' Certificate at least 60 days prior to the sinking fund payment date as
being beneficially owned by, and not pledged or hypothecated by, the Issuer or
an entity directly or indirectly controlling or controlled by or under direct or
indirect common control with the Issuer shall be excluded from Securities of
such series eligible for selection for redemption. The Trustee, in the name and
at the expense of the Issuer (or the Issuer, if it shall so request the Trustee
in writing) shall cause notice of redemption of the Securities of such series to
be given in substantially the manner provided in Section 11.2 (and with the
effect provided in Section 11.3) for the redemption of Securities of such series
in part at the option of the Issuer. The amount of any sinking fund payments not
so applied or allocated to the redemption of Securities of such series shall be
added to the next cash sinking fund payment for such series and, together with
such payment, shall be applied in accordance with the provisions of this
Section. Any and all sinking fund moneys held on the stated maturity date of the
Securities of any particular series (or earlier, if such maturity is
accelerated), which are not held for the payment or redemption of particular
Securities of such series shall be applied, together with other moneys, if
necessary, sufficient for the purpose, to the payment of the principal of, and
interest on, the Securities of such series at maturity.

            At least one Business Day before each sinking fund payment date, the
Issuer shall pay to the Trustee in cash or shall otherwise provide for the
payment of all interest


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<PAGE>   75
accrued to the date fixed for redemption on Securities to be redeemed on the
next following sinking fund payment date.

            The Trustee shall not redeem or cause to be redeemed any Securities
of a series with sinking fund moneys or mail any notice of redemption of
Securities for such series by operation of the sinking fund during the
continuance of a default in payment of interest on such Securities or of any
Event of Default except that, where the mailing of notice of redemption of any
Securities shall theretofore have been made, the Trustee shall redeem or cause
to be redeemed such Securities, provided that it shall have received from the
Issuer a sum sufficient for such redemption. Except as aforesaid, any moneys in
the sinking fund for such series at the time when any such default or Event of
Default shall occur, and any moneys thereafter paid into the sinking fund,
shall, during the continuance of such default or Event of Default, be deemed to
have been collected under Article Four and held for the payment of all such
Securities. In case such Event of Default shall have been waived as provided in
Section 4.9 or the default cured on or before the sixtieth day preceding the
sinking fund payment date in any year, such moneys shall thereafter be applied
on the next succeeding sinking fund payment date in accordance with this Section
to the redemption of such Securities.


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<PAGE>   76
            IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed and attested, all as of April 18, 1997.


                                  CARDINAL HEALTH, INC.


                                  By  /s/ David Bearman
                                     ------------------------
                                     Executive Vice President &
                                     CFO


Attest:


By  /s/ George H. Bennett, Jr.
  ---------------------------
  Secretary

                                  BANK ONE, COLUMBUS, NA


                                  By  /s/ Ted Kravits
                                    ------------------------
                                    Assistant Vice President

[CORPORATE SEAL]


Attest:

By /s/ Victoria Pavlick
  ------------------------
  Vice President
                                       69

<PAGE>   77


STATE OF OHIO           )
                        ) ss.:
COUNTY OF FRANKLIN      )



            On this 18th day of April, 1997 before me personally came
David Bearman to me personally known, who, being by me duly sworn, did depose
and say that he resides at Columbus, Ohio, that he is an Executive Vice
President & Chief Financial Officer of CARDINAL HEALTH, INC., one of the
corporations described in and which executed the above instrument; and that he
signed his name thereto by authority of the Board of Directors of said
corporation.


[NOTARIAL SEAL]


                                          /s/ Sandra M. Stein
                                          -------------------------
                                              Notary Public

                                              Sandra M. Stein  
                                              Notary Public - State of Ohio 
                                              My commission expires 1/13/2001

                                       70

<PAGE>   78


STATE OF OHIO             )
                          ) ss.:
COUNTY OF FRANKLIN        )


            On this 18th day of April, 1997 before me personally came Ted
Kravits to me personally known, who, being by me duly sworn, did depose and say
that he resides at Columbus, Ohio that he is an Assistant Vice President of BANK
ONE, COLUMBUS, NA, one of the corporations described in and which executed the
above instrument; that he knows the corporate seal of said corporation; that the
seal affixed to said instrument is such corporate seal; that it was so affixed
by authority of the Board of Directors of said corporation, and that he signed
his name thereto by like authority.


[NOTARIAL SEAL]

                                          /s/ Kimberly G. Adkins 
                                          -------------------------
                                                 Notary Public
                                          Kimberly G. Adkins
                                          Notary Public, State of Ohio
                                          My Commission expires April 10, 2001

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