BALL CORPORATION SUPPLEMENTAL
                           EXECUTIVE RETIREMENT PLAN
                   ---------------------------------------


                                   Article I.

        Section 1.01.   "Code" shall mean the Internal Revenue Code of 1986, as
amended from time to time.

        Section 1.02.   "Committee" shall mean the Human Resources Committee of
the Board of Directors of the Company.

        Section 1.03.   "Effective Date" shall mean May 1, 1994.

        Section 1.04. "Participant" shall mean an eligible Salaried Employee who
is an Active Member of the Pension Plan on or after the  Effective  Date and who
qualifies to participate in this Plan as provided in Article II.

        Section 1.05.  "Pension  Plan" shall mean the Ball  Corporation  Pension
Plan for Salaried  Employees or the Ball Corporation  Pension Plan As It Applies
to Certain Salaried Employees of Ball Aerospace Systems Division.

        Section 1.06.  "Plan"  shall  mean  the  Ball  Corporation  Supplemental
Executive Retirement Plan, as from time to time amended or restated, which shall
be a  nonqualified  plan  maintained  primarily  for the  purpose  of  providing
supplemental  retirement  benefits  for a  select  group of  highly  compensated
Salaried Employees.

        Section 1.07.   "Split Dollar Plan" shall mean the Ball Corporation
Split Dollar Life Insurance Plan.

        Section 1.08.  The following  terms shall have the same meanings as they
have under the Pension Plan:  "Accrued  Pension,"  "Active  Member,"  "Actuary,"
"Benefit  Service,"  "Company,"  "Employee,"  "Final  Average  Monthly  Salary,"
"Member,"  "Normal Pension Benefit,"  "Normal  Retirement Date,"  "Participating
Company,"   "Projected  Benefit  Service,"  "Salaried  Employee,"  and  "Vesting
Service."  "Compensation" and "Salary" shall have the same meanings as they have
under the Pension Plan, except that these definitions shall also include amounts
in  excess of the  limitations  imposed  by  Section  401(a)(17)  of the Code on
employee  compensation  which can be taken into account in  determining  pension
benefits under the Pension Plan.


                                   Article II

                                 Participation

        Section 2.01.  Eligibility. The Committee may, at any time and from time
to  time  on or  after  the  Effective  Date,  designate  management  or  highly
compensated  Salaried Employees who are Active Members of the Pension Plan to be
eligible to become  Participants  under this Plan. The Committee shall so notify
each Salaried Employee so designated,  and the Salaried Employee shall thereupon
become a  Participant  and  shall  remain a  Participant  in the Plan  until the
earlier  of (a) the date  that all  benefit  obligations  under  this  Plan with
respect to such Participant have been paid, or (b) the date as of which the Plan
is  terminated  or the  Employee's  rights  to any  benefits  under the Plan are
forfeited as provided in Section 5.01.


                                  Article III

                                    Benefits

        Section 3.01.   Amount of Benefit.

        (a) The  monthly  benefit  under this Plan  payable as a Normal  Pension
Benefit to a  Participant  who  retires on or after his Normal  Retirement  Date
shall be equal to the difference between (1) and (2) where ___

              (1)  is the amount of the normal retirement pension which would be
                   payable to the  Participant  under Section 5.1 of the Pension
                   Plan if Section 5.4 of the Pension  Plan (which  incorporates
                   the Code Section 415  limitations)  were  inapplicable and if
                   the  Participant's  Compensation and Salary under the Pension
                   Plan were not  subject  to the  limitations  imposed  by Code
                   Section 401(a)(17); and

              (2)  is the  amount  of the  normal  retirement  pension  which is
                   payable to the  Participant  under Section 5.1 of the Pension
                   Plan.

        (b) The Committee may, at its discretion,  increase the amount under the
provisions of subparagraph (a)(1) with respect to a Participant by crediting him
with  additional  deemed  Benefit  Service  and/or deemed Salary for a specified
period  between the date of his  retirement  and the date his benefit  commences
under this Plan. The Committee shall notify any Participant  whose benefit is so
increased.

        (c)  Notwithstanding  the foregoing  provisions  of this  Section,  if a
Participant  also  participates  in the Split Dollar Plan, no benefits  shall be
payable under this Plan beginning thirty (30) days following the event described
in Section 7.04a of the Split Dollar Plan.

        Section 3.02. Actuarial Adjustments. If a Participant's pension payments
commence under the Pension Plan at a time other than his Normal  Retirement Date
or in a form of payment other than a Normal Pension  Benefit,  the amount of the
benefit payable under this Plan shall be the amount specified in Section 3.01 of
this Plan,  adjusted using the same factors and assumptions (except as otherwise
provided  in  Section  3.03)  used  to  calculate  the  pension  payable  to the
Participant under the Pension Plan.

        Section 3.03. Form of Payment. The benefit payable under this Plan shall
be paid in the same form as the  pension  payable to the  Participant  under the
Pension Plan.  However,  the Committee may, in its sole  discretion,  direct the
payment of such benefit due a Participant, spouse or beneficiary under this Plan
in the form of an  actuarial  equivalent  lump sum.  The payment of the lump sum
shall  be  in  full  discharge  of  the  Company's  or  Participating  Company's
obligations  under  this Plan to the  Participant,  spouse or  beneficiary.  For
purposes of this Section,  "actuarial  equivalent" means a benefit of equivalent
value,  calculated by the Actuary on the basis of the mortality table used under
the Pension Plan and an interest  rate equal to the rate on five  (5)-year  U.S.
Treasury  Notes as determined by the Federal  Reserve Board and published in the
Wall Street  Journal on December 31st (or the last day of the calendar year said
newspaper is published) immediately prior to the date of the calculation.

        Section 3.04.  Commencement Date.  The benefit  payable  under this Plan
shall commence on or about the same date that the Participant's pension payments
commence under the Pension Plan.

        Section 3.05.   Death Benefit.

        (a) If a  Participant  also  participates  in the Split Dollar Plan,  no
death benefit shall be paid with respect to such Participant under this Plan.

        (b) If a Participant  does not  participate  in the Split Dollar Plan, a
death  benefit  shall  be  paid  to  a  surviving  spouse  or  other  designated
beneficiary of the Participant only if a death benefit is payable to such spouse
or beneficiary under the terms of the Pension Plan. Such death benefit,  if any,
shall be calculated using the same factors and assumptions used to calculate the
applicable  death  benefit  under the Pension Plan and shall be paid in the same
form as such death benefit  (unless  otherwise  provided in Section 3.03 of this
Plan),  except that the amount of the death  benefit  shall be  calculated  with
respect to the amount of the benefit the Participant accrues under this Plan.



                                   Article IV

                           Administration of the Plan

        Section 4.01.  Administrator.  The  Plan  shall be  administered  by the
Committee,  which shall have sole  authority to construe and  interpret the Plan
and issue such regulations as it deems appropriate. The Committee shall have the
duty and  responsibility of deciding  questions of eligibility,  determining the
amount,  manner and time of payment of any benefits hereunder,  and distributing
the benefits to Participants,  spouses and/or beneficiaries;  provided, however,
the Committee may appoint or employ  individuals to assist in the administration
of the  Plan and any  other  agents  it deems  advisable,  including  legal  and
actuarial counsel. The Committee's interpretations,  determinations, regulations
and  calculations  shall  be  final  and  binding  on all  persons  and  parties
concerned.  If a Participant desires a review of any benefit  determination made
by the  Committee,  he shall  follow the claims  review  procedure  described in
Section  9.4 of the  Pension  Plan  (except  that  such  appeal  shall be to the
Committee responsible for administering this Plan rather than the Pension Plan).

        Section 4.02.  Amendment and Termination.   The  Company  may  amend  or
terminate the Plan at any time,  and a  Participating  Company may terminate its
participation;  provided,  however,  that (subject to the  provisions of Section
5.01) no such  amendment or  termination  shall operate  retroactively  so as to
reduce  the  accrued  benefit  to  which  a  Participant,  surviving  spouse  or
beneficiary  may be entitled under Article III as in effect prior to the date of
such  amendment or  termination,  unless such  reduction is  attributable  to an
increase  in the level of pension  benefits  permitted  by law to be paid to the
Participant,  spouse or beneficiary  from the Pension Plan. For purposes of this
Section,  a  Participant's  "accrued  benefit"  is the amount  payable as of his
Normal  Retirement  Date equal to his  benefit  determined  in  accordance  with
Section 3.01,  based on his Final Average  Monthly Salary and Benefit Service as
of the date the computation is made.

        Section 4.03.  Payments.  The Company or Participating  Company will pay
all benefits to which its Salaried  Employees are entitled  under this Plan, and
all costs,  charges and expenses relating thereto.  The Company or Participating
Company shall not be required to reserve,  or otherwise set aside, funds for the
payment of their  obligations  hereunder.  To the extent the  Participant or any
other person  acquires a right to receive  benefits under this Plan,  such right
(and his claim against the Company's or Participating Company's assets) shall be
no greater  than the right or claim of any  unsecured  general  creditor  of the
Company or Participating Company.



                                   Article V

                                 Miscellaneous

        Section 5.01.  Forfeiture Provisions.  All of a Participant's  rights to
any benefits  under this Plan shall be forfeited if any of the following  events
occur:

         (a)  the Participant  ceases to be an Active Member of the Pension Plan
              before  completing at least 5 years of Vesting  Service or is, for
              any other  reason,  not  entitled to a pension  benefit  under the
              Pension Plan;

         (b)  the Participant  dies before his pension  payments  commence under
              the Pension Plan (unless a death  benefit is payable in accordance
              with Section 3.05 of this Plan); or

         (c)  the Company or Participating  Company terminates the Participant's
              employment  for  any  act of  misfeasance  or  nonfeasance  in the
              performance of his duties.

        Section 5.02.   Non-assignability of Benefits.   The  benefits   payable
hereunder  or the right to  receive  future  benefits  under the Plan may not be
anticipated, alienated, pledged, encumbered, or subjected to any charge or legal
process,  and if any  attempt  is made to do so,  or a person  eligible  for any
benefits  becomes  bankrupt,  the interest under the Plan of the person affected
may be terminated by the Committee which, in its sole discretion,  may cause the
same to be held or applied for the benefit of one or more of the  dependents  of
such  person  or make  any  other  disposition  of such  benefits  that it deems
appropriate.

        Section 5.03. Nonguarantee of Employment. Nothing contained in this Plan
shall  be  construed  as  a  contract  of  employment  between  the  Company  or
Participating  Company and any Participant,  or as a right of any Participant to
be continued in employment with the Company or  Participating  Company,  or as a
limitation on the right of the Company or Participating Company to discharge any
of its Employees, with or without cause.

        Section 5.04. Facility of Payment. Whenever, in the Committee's opinion,
a person  entitled to receive any payment or benefit  under this Plan is under a
legal disability or is incapacitated in any way so as to be unable to manage his
financial  affairs,  the  Committee may determine  that benefit  payments  shall
either (a) be made directly to such person, (b) be made directly to a person who
has assumed the care of such person to be used for the support,  maintenance  or
education of such person or otherwise for the benefit of such person,  or (c) be
made to the duly  appointed  guardian or other  representative,  if any, of such
person.  The  Committee  and the Company or  Participating  Company shall not be
required  to see to the  application  by any third  party of any  payments  made
pursuant to this Section.

        Section 5.05.  Gender and Number.  Whenever  appropriate,  the masculine
gender  may be  read as the  feminine  gender  or as the  neuter  gender,  and a
singular number may be read as the plural and a plural number as the singular.

        Section 5.06.   Applicable Law.   All   questions   pertaining   to  the
construction,  validity and effect of the Plan shall be determined in accordance
with the laws of the United  States  and, to the extent not  pre-empted  by such
laws, by the laws of the State of Indiana.

        Executed  pursuant to  authorization of the Company's Board of Directors
this 15th day of August, 1994.


                                     BALL CORPORATION

                                     By:

                                     Title:


Attest: