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                                                                  EXHIBIT 10.20

                                AMENDMENT TO THE
                       ALLEGHENY TECHNOLOGIES INCORPORATED
                                  PENSION PLAN

         THIS AMENDMENT IS MADE AS OF JANUARY 1, 2003 to the Base Document of
the Allegheny Technologies Incorporated Pension Plan (the "Plan") as a new
Section 5.4 thereof and is recorded in this document to evidence the amendment
as made by the Personnel and Compensation Committee of the Board of Directors of
Allegheny Technologies Corporation at its duly called and held meeting on
December 12, 2002 with a quorum acting throughout.

         5.4 ALTERNATIVE BENEFIT. Notwithstanding any other provision of this
Plan or of this Part, the benefits of the following named individuals shall be
equal to the greater of (i) the benefit accrued by or on behalf of such
individual under the formula applicable to him as of December 31, 2002 and (ii)
the benefit accrued under the service provisions and formula introduced by this
Amendment as set forth below. For purposes of determining actuarial equivalence
for the following benefits, the factors applicable under Part 24, the TDY
Retirement Plan for Salaried Employees ("Part 24") shall be used for the
respective purposes indicated in Part 24.

For purposes of determining Service of the named individuals solely under the
formula introduced by this Amendment, each named individual will be credited
with Service for his employment with Allegheny Technologies Incorporated,
Allegheny Ludlum Corporation and/or Teledyne, Inc. or any member of the
controlled group of corporations that included one or more of those corporations
at the time of the named individual's employment with such entity,
notwithstanding any cessation of service crediting under any one or more parts
of the Plan, but not to exceed 30 years of Service for any of the named
individuals.

The formula introduced by this Amendment (which is the alternative to the
formula applicable to the named individual as of December 31, 2002) calculates
an accrued benefit payable in monthly installments commencing at age 65 in the
normal form of benefit payable under this Plan, but distributable in any
optional form of benefit permitted under Part 24 and subject to the rules
otherwise applicable under Part 24 for early or 30 year retirements, except that
(i) 30 year retirement payments cannot begin until the named individual with
respect to whom the 30 year retirement is payable attains the age of 56 and (ii)
at the earlier of attainment of age 62 or the completion of 30 years of service,
there is no actuarial reduction for commencement prior to normal retirement age.
The formula introduced by this amendment is for the respective named
individuals:

(1) the number of Years of Service determined under the this Amendment
multiplied by (2) the highest rate of monthly Compensation (but not to exceed
the limitations on Compensation set forth in Section 401(a)(17) of the Code and
in this Part 24) paid to the Named Individual in the 60 month period immediately
preceding his retirement multiplied by (3) the factor set forth below as
applicable to the particular named individual.

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The named individuals covered by this Amendment and the factors applicable to
the named individuals are:

         James L. Murdy                     3.5%
         Jack Shilling                      3.2%
         Douglas Kittenbrink                3.2%
         Jon D. Walton                      3.4%
         Richard Harshman                   2.5%
         Dale Reid                          2.5%
         Robert Park                        2.5%

         provided, however, the Plan Administrator shall cause the benefits
determined in accordance with the factors above to be reviewed from time to time
and any accrual or benefit which violates any limit set forth in the Plan or in
the Code shall be reduced to the extent necessary to cause such benefit or
accrual to comply with the applicable provisions of the Plan and the Code.

         Except as set forth in this Amendment the applicable provisions of the
Plan and of Part 24 shall apply in all respects.

         To record the due adoption of this Amendment as of January 1, 2003,
Allegheny Technologies Incorporated has caused this Amendment to be executed by
its authorized officer.

                                        Allegheny Technologies Incorporated

                                        By: /s/ Jon D. Walton
                                                ------------------------------
                                        Title:  Executive Vice President,
                                                Human Resources, Chief Legal
                                                and Compliance Officer<PAGE>

                                                                EXHIBIT 10.4 (a)

                                    AMENDMENT
                                       TO
                         CB&I DEFERRED COMPENSATION PLAN

         CB&I ("Company"), by a duly authorized officer of the Company and a
Managing Director of CB&I B.V., pursuant to Section 8.7 of the CB&I Deferred
Compensation Plan (the "Plan"), hereby amends Section 4.4 of the Plan to read as
follows:

         4.4      Income (or Loss) on Credits. For purposes of determining
                  income (or loss) on a Participant's Account, the Account
                  shall be deemed invested in such Measurement Funds as the
                  Participant may designate from time to time under procedures
                  established by the Plan Administrator. The designation of
                  Measurement Funds from time to time shall apply to all
                  deferrals (of Salary and bonus) and to the Participant's
                  entire Account, until changed. Designation of Measurement
                  Funds shall be in whole percentages of a participant's
                  deferrals, or of the balance of his or her Account, which
                  percentages shall add up to 100%. If the Participant does not
                  otherwise designate a Measurement Fund under procedures
                  established by the Plan Administrator, his or her Account
                  shall be deemed invested in the Summit Cash Reserve Fund.

                  As of any Change Date, a Participant may change the
                  designation or allocation of Measurement Funds to determine
                  income (or loss) on future credits of deferred compensation,
                  or may change the existing allocation of his or her Account
                  among Measurement Funds, under procedures established by the
                  Plan Administrator to implement such changes.

                  For purposes of determining income (or loss), a Participant's
                  deferred compensation shall be deemed to have been invested in
                  Measurement Funds as soon as reasonably practicable after the
                  date as of which they are credited under Section 4.1, and in
                  all events by the fifteenth (15th) business day of the month
                  after the month in which they are credited under Section 4.1.
                  For purposes of determining income (or loss), a Participant's
                  Account shall be deemed to have been reinvested in the
                  newly-designated Measurement Funds as soon as reasonably
                  practicable under the procedures established by the Plan
                  Administrator to implement such changes.

                                        CB&I

                                        By:   _________________________

                                        Title: ________________________

                                        Date: _________________________<PAGE>

                                                                 Exhibit 10.5(c)

                                 THIRD AMENDMENT
                                       OF
                          CHICAGO BRIDGE & IRON COMPANY
                      MANAGEMENT DEFINED CONTRIBUTION PLAN
              (AS AMENDED AND RESTATED EFFECTIVE SEPTEMBER 1, 1999)

         Chicago Bridge & Iron Company N.V., a Netherlands company, acting by
and through its sole Managing Director, Chicago Bridge & Iron Company B.V., a
Netherlands company, acting and through its duly authorized and acting Managing
Director, pursuant to Article X of the Chicago Bridge & Iron Company Management
Defined Contribution Plan, as amended and restated effective September 1, 1999
and subsequently amended (the "Plan"), hereby amends the Plan, effective as
provided below, as follows:

                                       I.

         Section 6.2 of the Plan is amended to read as follows:

                  Section 6.2 Part B Participants - Glenn. If Gerald M. Glenn
         consents to the application to him of this Section 6.2 and his Stock
         Account is held in Trust B, the Trustee of Trust B shall distribute and
         release to the Committee and the Committee shall distribute to Mr.
         Glenn (or if applicable, his Beneficiary) all vested amount and all
         vested shares of Stock credited to his Stock Account on the earliest to
         occur of (i) the first business day after his Termination of
         Employment, or (ii) a Change of Control; and prior thereto shall
         distribute to Mr. Glenn (or if applicable, his Beneficiary) vested
         amounts and vested shares of Stock credited to his Stock Account, but
         only during the month of December of each year and only to the extent
         that the distributable amount, when added to all Other Compensation
         paid or accrued by the Company as taxable compensation to such Part B
         Participant for the same tax year of the Company, does not exceed the
         maximum amount thereof that is deductible by the Company after applying
         any applicable limitation under Section 162(m) of the Code.

                  (a)      "Other Compensation" means all other compensation
         (including without limitation dividends payable in respect of
         restricted stock units or shares of restricted stock) previously paid
         or accrued, or which the Company reasonably expects to be paid or
         accrued thereafter under the customary pay practices of the company
         assuming no change such Part B Participant's status or base
         compensation as in effect on the date of the distribution pursuant to
         this Plan, which Other Compensation would be deductible by the Company
         for such Taxable year but for the potential application of Section
         162(m).

<PAGE>

                  (b)      If after receiving a distribution of the Stock
         Account but within the same taxable year of the Company such Part B
         Participant becomes entitled for any reason to receive Other
         Compensation which, when added to such distribution and all Other
         Compensation previously paid or accrued by the Company to such Part B
         Participant for the same taxable year of the company, is in whole or in
         part nondeductible by reason of the application of Section 162(m), such
         Part B Participant shall be deemed to have irrevocably elected to defer
         the receipt of the nondeductible portion of such Other Compensation as
         though such nondeductible portion were an amount distributable from his
         Stock Account.

                                       II.

         The foregoing Amendment shall be effective as of the date of Gerald M.
Glenn's consent thereto.

                                      III.

         Except as provided in this Amendment the Plan shall remain in full
force and effect.

         IN WITNESS WHEREOF, the Company has caused this Amendment to be
executed by its duly authorized officer.

                                   CHICAGO BRIDGE & IRON COMPANY N.V.

                                   By: Chicago Bridge & Iron Company B.V.,
                                       Its sole managing Director

            Date:  May 8, 2003     By: (s) Richard E. Goodrich
                                       -----------------------
                                         its Managing Director

            ATTEST:

            (s) Scott Russell
            -----------------
            Secretary

                                   Consented to by EXECUTIVE

            Date:  May 8, 2003     (s) Gerald M. Glenn
                                   -------------------

<PAGE>
                                    AGREEMENT

         This Agreement dated as of May 8, 2003 is made between Chicago Bridge &
Iron Company, N.V. a Netherlands company (the "Company"), and Gerald M. Glenn, a
Texas resident ("Executive").

                                    RECITALS

         A.       The Company has established for the benefit of certain key
                  employees of the Company and its majority-owned subsidiaries
the Chicago Bridge & Iron Management Defined Contribution Plan, as amended (the
"Plan"). Executive is a participant in the Plan.

         B.       The Company and the Executive have entered into a certain
agreement dated as of September 1, 1999 (the "Plan Agreement"), pursuant to
which among other things the Executive consented to an amendment of the Plan.

         C.       The Company now desired to further amend the Plan and the
Executive desires to consent thereto and the Company and Executive mutually
desire to amend the Plan Agreement.

                                    AGREEMENT

            The Company and Executive agree as follows:

         1.       Executive for himself and his beneficiaries consents to the
Third Amendment to the Plan (the "Plan Amendment") in the form thereof attached
to this Agreement as Exhibit A, and to the application to Executive of Section
6.2 of the Plan as so amended.

         2.       Section 3 of the Plan Agreement is amended by amending clause
(ii) of subsection (a) to read "the first business day after his Termination of
Employment."

         3.       Nothing in this Agreement or in the Plan Amendment shall be
deemed to affect the application of that certain Amendment and Consent Agreement
between the Company and Executive dated as of October 13, 2000, in determining
whether a Change in Control has occurred for purposed of the Plan or the Plan
Agreement.

         IN WITNESS WHEREOF, the Company and Executive have executed this
Agreement as of the date first above written.

                                   CHICAGO BRIDGE & IRON COMPANY N.V.

                                   By: Chicago Bridge & Iron Company B.V.,
                                       Its sole managing Director

            Date:  May 8, 2003     By: (s) Richard E. Goodrich
                                       -----------------------
                                         its Managing Director

<PAGE>

            ATTEST:

            (s) Scott Russell
            -----------------
            Secretary

                                       Consented to by EXECUTIVE

Date:  May 8, 2003                     (s) Gerald M. Glenn
                                       -------------------

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