SECURITIES AND EXCHANGE COMMISSION


                             WASHINGTON, D.C. 20549



                                    FORM 11-K


                                  ANNUAL REPORT



        Pursuant to Section 15(d) of the Securities Exchange Act of 1934

                      For the Year Ended December 31, 2003

                         Commission File Number 1-16619




                 Kerr-McGee Corporation Savings Investment Plan

                            (full title of the Plan)






                             Kerr-McGee Corporation
                                Kerr-McGee Center
                          Oklahoma City, Oklahoma 73102





             (Name of the issuer of the securities held pursuant to
             the Plan and address of its principal executive office)














                 KERR-McGEE CORPORATION SAVINGS INVESTMENT PLAN

                 FINANCIAL STATEMENTS AND SUPPLEMENTAL SCHEDULES

                           DECEMBER 31, 2003 AND 2002



             Report of Independent Registered Public Accounting Firm


                              Financial Statements


Statement of Net Assets Available for Benefits as of December 31, 2003 and 2002

Statement  of Changes in Net Assets  Available  for  Benefits for the year ended
December 31, 2003

Notes to Financial Statements as of December 31, 2003 and 2002


                             Supplemental Schedules



Schedule H, Line 4i -Schedule of Assets (Held at End of Year)

Schedule H, Line 4j -Schedule of Reportable Transactions


All other schedules  required by the Employee  Retirement Income Security Act of
1974 and the  regulations  promulgated  by the  Department  of Labor  have  been
omitted since they are inapplicable.









             REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


Kerr-McGee Corporation Benefits Committee
Kerr-McGee Corporation Savings Investment Plan


     We have  audited the  accompanying  statement of net assets  available  for
benefits of  Kerr-McGee  Corporation  Savings  Investment  Plan (the Plan) as of
December 31, 2003 and 2002,  and the related  statement of changes in net assets
available  for benefits for the year ended  December 31, 2003.  These  financial
statements are the responsibility of the Plan's  management.  Our responsibility
is to express an opinion on these financial statements based on our audits.

     We  conducted  our audits in  accordance  with the  standards of the Public
Company Accounting Oversight Board (United States). Those standards require that
we plan and perform the audit to obtain  reasonable  assurance about whether the
financial  statements  are free of  material  misstatement.  An  audit  includes
examining,  on a test basis,  evidence supporting the amounts and disclosures in
the  financial  statements.  An audit also  includes  assessing  the  accounting
principles  used  and  significant  estimates  made  by  management,  as well as
evaluating the overall  financial  statement  presentation.  We believe that our
audits provide a reasonable basis for our opinion.

     In our opinion,  the financial statements referred to above present fairly,
in all material  respects,  the net assets available for benefits of the Plan at
December  31,  2003 and 2002,  and the changes in its net assets  available  for
benefits for the year ended December 31, 2003, in conformity with U.S. generally
accepted accounting principles.

     Our  audits  were  performed  for the  purpose of forming an opinion on the
financial statements taken as a whole. The accompanying  supplemental  schedules
of  assets  (held  at end of year)  as of  December  31,  2003,  and  reportable
transactions  for the  year  then  ended,  are  presented  for the  purposes  of
additional analysis and are not a required part of the financial  statements but
are  supplementary  information  required by the Department of Labor's Rules and
Regulations for Reporting and Disclosure  under the Employee  Retirement  Income
Security Act of 1974. These supplemental schedules are the responsibility of the
Plan's  management.  The  supplemental  schedules  have  been  subjected  to the
auditing procedures applied in our audit of the financial statements and, in our
opinion, are fairly stated in all material respects in relation to the financial
statements taken as a whole.





                                                               ERNST & YOUNG LLP


Oklahoma City, Oklahoma
May 28, 2004






                 KERR-McGEE CORPORATION SAVINGS INVESTMENT PLAN

                 STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS
                             (Thousands of dollars)



                                                              December 31,
                                                       -------------------------
                                                         2003             2002
                                                       --------         --------

ASSETS:
    Investments                                        $290,246         $245,200

    Other assets                                             79              415
                                                       --------         --------

NET ASSETS AVAILABLE FOR BENEFITS                      $290,325         $245,615
                                                       ========         ========







The accompanying notes are an integral part of this statement.





                 KERR-McGEE CORPORATION SAVINGS INVESTMENT PLAN

            STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
                             (Thousands of dollars)


                                                                  Year Ended
                                                               December 31, 2003
                                                               -----------------

Additions:
    Additions to net assets attributed to:
        Investment income:
           Dividends                                                    $  6,372

           Interest                                                          358

           Net appreciation in fair value of investments                  41,183
                                                                        --------
                                                                          47,913

        Employee contributions                                            18,224

        Transfer from ESOP                                                 4,434
                                                                        --------

           Total additions                                                70,571
                                                                        --------

Deductions:
    Deductions from net assets attributed to:

        Distributions to terminating and withdrawing participants         25,861
                                                                        --------
           Total deductions                                               25,861
                                                                        --------


           Net increase                                                   44,710

Net assets available for benefits:
    Beginning of year                                                    245,615
                                                                        --------
    End of year                                                         $290,325
                                                                        ========





The accompanying notes are an integral part of this statement.




                 KERR-McGEE CORPORATION SAVINGS INVESTMENT PLAN


                          NOTES TO FINANCIAL STATEMENTS

                           DECEMBER 31, 2003 AND 2002


(1) DESCRIPTION OF THE PLAN

    General -

    The Kerr-McGee  Corporation  Savings Investment Plan (the Plan) is a defined
    contribution plan in which eligible employees of Kerr-McGee  Corporation and
    its  affiliated  companies  (collectively  referred to as the  Company)  may
    participate.  Employees  are allowed to  participate  in the Plan from their
    initial date of employment.

    The Plan allows participants to defer taxable earnings through contributions
    to the Plan as provided for under  Section  401(k) of the  Internal  Revenue
    Code (the Code), and to borrow from their accounts within the Plan.

    The Plan is administered by the Kerr-McGee  Corporation  Benefits  Committee
    (the  Committee),  which  is  appointed  by the  Board of  Directors  of the
    Company.  Accounting  and  administration  for the Plan are  provided by the
    Company at no cost to the Plan.  In addition,  all expenses of the Trust are
    borne by the Company.

    The Company  intends to continue  the Plan  indefinitely,  but  reserves the
    right to alter, amend, modify, revoke or terminate the Plan at any time upon
    the direction of the Company's Board of Directors. If the Plan is terminated
    for any reason,  the Committee  will direct that the  participants'  account
    balances be distributed as soon as practical.  The Company has no continuing
    liability  under the Plan after the final  disposition  of the assets of the
    Plan.

    Effective January 1, 1990, all employer  matching  contributions are made to
    the Kerr-McGee  Corporation  Employee Stock Ownership Plan (ESOP), which was
    established in September  1989. All matching  contributions  are invested in
    Kerr-McGee  Corporation  common  stock.  The ESOP is not  part of the  Plan;
    therefore,  the employer  contributions  to the ESOP and the ESOP assets and
    earnings are not included in the accompanying Plan financial statements.

    Prior to January 1, 1990, employer matching contributions were made into the
    Plan and invested in Kerr-McGee  Corporation common stock. The 2003 activity
    related to these nonparticipant-directed contributions is shown in Note 4.

    Effective January 1, 2000, eligible  participants in the ESOP have an annual
    option to diversify up to 25% of their year-end  Kerr-McGee stock balance in
    the ESOP into investment  options available in the Plan. This option must be
    exercised by March 31 of each year.  The amount  diversified  during 2003 is
    shown as  Transfer  from ESOP on the  Statement  of  Changes  in Net  Assets
    Available for Benefits.

    The  participants'  contributions to the Plan and earnings thereon are fully
    vested  at all  times.  Each  participant's  account  is  credited  with the
    participant's  contributions  and an allocation of Plan  earnings.  With the
    exception of the  nonparticipant-directed  portion of the  Kerr-McGee  Stock
    Fund,  participants  designate how their balances are invested in any one or
    more of several investment options.

    On termination of service,  including terminations due to death, disability,
    or  retirement,  a participant  or  participant's  beneficiary  may elect to
    receive  an amount  equal to the  value of the  participant's  account.  The
    normal  form of such  distribution  is a single lump sum  payment;  however,
    certain  eligible  members  may elect to have an annuity  purchased  from an
    insurance  company in lieu of a lump sum payment.  Terminating  participants
    with more than $5,000 in the Plan may defer  distribution  until age 70 1/2.
    Investments  relating  to these  participants  remain in the Trust until the
    terminated  participant  requests   distribution.   Participants  who  defer
    distribution continue to share in earnings and losses of the Plan.

    The following is a description of the investment options available under the
    Plan at December 31, 2003:

         Kerr-McGee Stock Fund - common stock of the Company.

         Fidelity  Growth  Company  Fund - invests in common  stock of companies
         believed to have above-average growth potential.

         Fidelity  Balanced Fund - normally  invests 60% of its assets in stocks
         and 40% of its assets in bonds.

         Fidelity Diversified  International Fund - invests primarily in foreign
         securities.

         Fidelity  Dividend  Growth  Fund -  invests  at least  80% of its total
         assets in companies believed to have the potential for dividend growth.

         Fidelity  Mid-Cap  Stock  Fund - invests  at least 80% of its assets in
         common stocks of companies with medium market capitalizations.

         Managed Income Portfolio II - invests in investment contracts issued by
         insurance companies and other financial institutions.

         Spartan U.S.  Equity Index Fund - invests at least 80% of its assets in
         common stocks included in the S&P 500.

         Pimco Total Return Fund - invests in all types of bonds.

         Baron  Growth Fund - invests  primarily  in  small-cap  companies  with
         market values between $100 million and $1.5 billion.

         Oakmark  Select  Fund -  invests  primarily  in  common  stocks of U.S.
         companies.

         Columbia  Small-Cap  Fund - invests  primarily in common stock of small
         companies  believed to be  undervalued  (previously  called the Liberty
         Small-Cap Fund).

         Aim Basic  Value  Fund - invests  65% of assets in  securities  of U.S.
         issuers with market capitalization of greater than $500 million and 35%
         of assets in U.S. issuers with market  capitalization of less than $500
         million.

         Royce  Low-Priced  Stock  Fund - invests in both  small- and  micro-cap
         companies that are trading for less than $20 per share.


    SMART and CAPITAL Savings Programs -

    All participants participate in the Plan under the SMART and CAPITAL Savings
    Programs.  Participants may direct their savings,  up to a maximum of 15% of
    compensation, to be invested in 1% increments among one or more of the funds
    provided for under the Plan.  An unlimited  number of transfers  are allowed
    between funds.

    Contributions  to  the  SMART  Savings  Program  are  from  a  participant's
    compensation,  before income taxes.  The  participant's  income taxes on the
    pre-tax  contributions  are deferred until the contributions are distributed
    after  termination,  at the time of hardship  withdrawal,  or under  minimum
    distribution  rules  at  age  70  1/2.  The  annual  SMART  Savings  Program
    contribution  limitation is subject to annual  adjustments for inflation and
    was $12,000  for 2003 in  accordance  with the  Internal  Revenue  Code (the
    Code).  Under the Code,  participants  aged 50 and over may make  additional
    catch-up  contributions  up to a  maximum  of  $2,000  in 2003.  Participant
    contributions  in excess of amounts  allowable under the Code are considered
    to be contributions to the CAPITAL Savings Program.

    Contributions  to the  CAPITAL  Savings  Program  are  from a  participant's
    compensation,  after income taxes. If a participant has authorized less than
    15% of their  compensation  to be contributed to the SMART Savings  Program,
    they may contribute the remaining whole percentages up to 15% to the CAPITAL
    Savings  Program.  Participant  contributions  may be  invested  in the same
    proportions  and the same  funds as  outlined  above for the  SMART  Savings
    Program.  The maximum  contributions  allowed to each program may be limited
    for  highly   compensated   employees,   depending   upon  the   balance  of
    contributions at all levels.

    Participants  may borrow from the Plan against  their  contributions  to the
    SMART and CAPITAL  Savings  Programs and against  their  interest in Company
    matching  contributions  held in the Plan.  New loans to  participants  bear
    interest at a fixed rate equal to the U.S.  prime rate (as  published in The
    Wall  Street  Journal),   plus  1.0%.  Such  interest  is  credited  to  the
    participant's  accounts in the Plan when repaid.  The average  interest rate
    for new loans, which is adjusted quarterly,  was 5.19% for 2003. The minimum
    loan amount,  determined periodically by the Committee, is currently $1,000.
    The  maximum  amount  of all loans to a  participant  under the Plan and any
    other  plans of any  employer  may not  exceed  the  lesser of (a)  $50,000,
    reduced by an amount equal to the difference  between (i) the  participant's
    highest loan balance under the Plan during the one-year period ending on the
    day before the date on which such loan is made and (ii) the outstanding loan
    balance of the participant under the Plan on the date on which such loan was
    made or (b)  one-half  the current  value of the  participant's  interest in
    their accounts. Loans must be repaid within five years from the initial date
    of  the  loan,  with  certain  special  provisions  available  for  military
    reservists   called  to  active  duty.  In  the  event  of  a  participant's
    termination  of  employment   and  subsequent   default  on  the  loan,  any
    outstanding balance will be considered a distribution and will be taxable to
    the participant as prescribed by the Code.


(2) SIGNIFICANT ACCOUNTING POLICIES

    Basis of  Accounting  - The  financial  statements  of the Plan are prepared
    under the accrual  method of accounting in  accordance  with U.S.  generally
    accepted accounting principles.

    Use of Estimates - The  preparation  of financial  statements  in conformity
    with U.S. generally accepted  accounting  principles  requires management to
    make  estimates  and  assumptions  that affect the  reported  amounts of net
    assets  available  for benefits and changes  therein.  Actual  results could
    differ from those estimates.

    Investment  Risk - The Plan provides for  investments in various  investment
    securities, which in general, are exposed to various risks, such as interest
    rate, credit and overall market volatility risks.  Further, due to the level
    of risk  associated  with  certain  investment  securities,  it is at  least
    reasonably possible that changes in the values of investment securities will
    occur in the near term and that such  changes  could  materially  effect the
    amounts reported in the statements of net assets available for benefits.

    Investment  Valuation and Income  Recognition - The Plan's  investments  are
    stated at fair value. Shares of registered  investment  companies and common
    collective  trusts are valued at quoted market prices,  which  represent the
    net asset value of shares held by the Plan at year-end. The Company stock is
    valued at its quoted market price.  Loans to participants are valued at cost
    which  approximates  fair  value.  Purchases  and  sales of  securities  are
    recorded on a trade-date  basis.  Interest income is recorded on the accrual
    basis. Dividends are recorded on the ex-dividend date.

    Payment  of  Benefits  -   Distributions   to  terminating  and  withdrawing
    participants are recorded when paid.


(3) LOANS TO PARTICIPANTS

    Loan activity during 2003 and 2002 is set forth below:

    (Thousands of dollars)                              2003             2002
                                                       -------          -------

    Balance at beginning of year                       $ 6,707          $ 7,148

      New loans                                          3,048            2,506

      Principal repayments                              (2,975)          (3,037)

      Loans included as distributions
        to terminated participants                        (437)            (292)

      Transfer from prior trustee                            -              382
                                                       -------          -------

    Balance at end of year                             $ 6,343          $ 6,707
                                                       =======          =======

    Interest income applicable to these loans during 2003 was $358,000.


(4) NONPARTICIPANT-DIRECTED INVESTMENTS

    The   Kerr-McGee   Stock   Fund  is  the  only  fund   consisting   of  both
    participant-directed   contributions  and  nonparticipant-directed   Company
    matching contributions. Information about the net assets and the significant
    components    of   the    changes   in   net   assets    relating   to   the
    nonparticipant-directed investments, is as follows:

                                                              December 31,
                                                        ------------------------
    (Thousands of dollars)                               2003             2002
                                                        -------          -------

    Net Assets:
      Common stock                                      $10,127          $10,454
                                                        =======          =======


                                                               Year ended
                                                            December 31, 2003
                                                            -----------------

    Changes in Net Assets:
      Dividends                                                   $   414
      Net appreciation                                                503
      Distributions                                                (1,244)
                                                                  -------
                                                                  $  (327)
                                                                  =======



(5) INVESTMENTS

    The following presents  investments of the Plan's net assets at December 31,
    2003 and 2002.

                                                         December 31,
                                                    ----------------------
    (Thousands of dollars)                            2003           2002
                                                    -------        -------

    Kerr-McGee Corporation Common Stock -
      1,099,106 shares in 2003 and 1,146,575
      shares in 2002                               $ 51,097(a)(b) $ 50,793(a)(b)

    Fidelity Growth Company Fund - 324,179 shares
      in 2003 and 305,832 shares in 2002             16,232(b)      10,833

    Fidelity Balanced Fund - 1,709,993 shares in
      2003 and 1,610,966 shares in 2002              28,642(b)      21,410(b)

    Fidelity Diversified International Fund -
    608,105 shares in 2003 and 571,602 shares
    in 2002                                          14,668(b)       9,809

    Fidelity Dividend Growth Fund - 88,377 shares
      in 2003 and 34,372 shares in 2002               2,413            767

    Fidelity Mid-Cap Stock Fund - 1,060,114 shares
      in 2003 and 1,106,759 shares in 2002           22,867(b)      17,996(b)

    Managed Income Portfolio II - 61,397,521
      shares in 2003 and 63,798,267 shares
      in 2002                                        61,398(b)      63,798(b)

    Spartan U.S. Equity Index Fund - 586,802
      shares in 2003 and 516,889 shares in 2002      23,126(b)      16,101(b)

    Pimco Total Return - 1,019,349 shares in 2003
      and 872,644 shares in 2002                     10,917          9,311

    Baron Growth Fund - 49,811 shares in 2003
      and 22,753 shares in 2002                       1,765            612

    Oakmark Select Fund - 141,060 shares in 2003
      and 111,076 shares in 2002                      4,319          2,646

    Columbia Small-Cap Fund - 147,395 shares in
      2003 and 119,783 shares in 2002                 2,520          1,515

    AIM Basic Value Fund - 1,397,793 shares in
      2003 and 1,443,679 shares in 2002              40,872(b)      31,559(b)

    Royce Low-Priced Stock Fund - 219,406 shares
      in 2003 and 137,770 shares in 2002              3,067          1,343

    Participant Loans                                 6,343          6,707
                                                   --------        -------

    Total Investments                              $290,246       $245,200
                                                   ========       ========

    (a) A portion of this amount is nonparticipant-directed (see Note 4).

    (b) Asset represents 5% or more of the Plan's net assets as of the indicated
        year end.


    During  2003,  the  Plan's  investments   (including  gains  and  losses  on
    investments bought and sold, as well as held during the year) appreciated in
    value by $41,183,000 as follows:

                 (Thousands of dollars)

    Kerr-McGee Corporation Common stock                    $ 2,537
    Registered Investment Companies and
      Common Collective Trusts                              38,646
                                                           -------
                                                           $41,183
                                                           =======


(6) TAX STATUS

    The Plan obtained its latest  determination letter dated September 18, 2003,
    in which the Internal  Revenue  Service  stated that the Plan is a qualified
    plan under  provisions of Section  401(a) and is exempt from Federal  Income
    taxes under  provisions  of Section  501(a) of the Code.  Subsequent to this
    determination  by the  Internal  Revenue  Service,  the Plan was  amended to
    incorporate   the  final  IRS   regulations   governing   minimum   required
    distributions  under  Internal  Revenue  Code  Section  401  (a)  (9).  Once
    qualified,  the Plan is required to operate in  conformity  with the Code to
    maintain  its  qualification.  The  Committee  believes  the  Plan is  being
    operated in compliance  with the  applicable  requirements  of the Code and,
    therefore,  believes that the Plan, as amended, is qualified and the related
    trust is tax exempt.

    Taxes  on  any  income  earned  on  investment  assets  attributable  to the
    participants  are deferred until the receipt of a  distribution  pursuant to
    the  terms  of  the  Plan.   Prior   Company   contributions   and  employee
    contributions  to the  SMART  Savings  Program  are  also  not  taxed to the
    participants until the receipt of a distribution.



(7) SUBSEQUENT EVENT

    On April 7, 2004, the company and Westport Resources Corporation  (Westport)
    announced  that  their  Boards  of  Directors  had  unanimously  approved  a
    strategic  merger.  In connection  with the merger,  the Company  expects to
    issue  approximately  49  million  shares  of  common  stock  to  Westport's
    stockholders.  The transaction is subject to approval by the stockholders of
    both companies,  as well as customary closing conditions.  If approved,  the
    transaction  is expected to be  consummated  in the second  quarter of 2004,
    shortly after the companies' respective shareholders meetings, which will be
    held on June 25,  2004.  The  effect  of the  merger on the Plan and its net
    assets,  including  the  effect on the fair  value of the  Company's  common
    stock, if any, is not currently known.






                 KERR-McGEE CORPORATION SAVINGS INVESTMENT PLAN

         SCHEDULE H, LINE 4i - SCHEDULE OF ASSETS (HELD AT END OF YEAR)

                   (Employer Identification Number 73-1612389)
                                (Plan Number 007)

                                DECEMBER 31, 2003
                             (Thousands of dollars)




                 (b)                                             (c)                                                    (e)
(a)*   Identity of issue, borrower,        Description of investment including maturity date,            (d)          Current
       lessor or similar party             rate of interest, collateral, par or maturity value           Cost          Value
----   ------------------------------      ---------------------------------------------------         -------       --------
                                                                                                         
 *     Kerr-McGee Corporation              Common Stock - 1,099,106 shares                             $51,085       $ 51,097
 *     Fidelity Investments                Fidelity Growth Company Fund - 324,179 shares                    nr         16,232
 *     Fidelity Investments                Fidelity Balanced Fund - 1,709,993 shares                        nr         28,642
 *     Fidelity Investments                Fidelity Diversified Int'l Fund - 608,105 shares                 nr         14,668
 *     Fidelity Investments                Fidelity Dividend Growth Fund - 88,377 shares                    nr          2,413
 *     Fidelity Investments                Fidelity Mid-Cap Stock Fund - 1,060,114 shares                   nr         22,867
 *     Fidelity Investments                Managed Income Portfolio II - 61,397,521 shares                  nr         61,398
 *     Fidelity Investments                Spartan U.S. Equity Index Fund - 586,802 shares                  nr         23,126
       Pacific Investment Management
         Company                           Pimco Total Return Fund- 1,019,349 shares                        nr         10,917
       BAMCO, Inc.                         Baron Growth Fund - 49,811 shares                                nr          1,765
       Harris Associates L.P.              Oakmark Select Fund - 141,060 shares                             nr          4,319
       Fleet Investment Advisors Inc.      Columbia Small-Cap Fund - 147,395 shares                         nr          2,520
       AIM Advisors, Inc.                  AIM Basic Value Fund - 1,397,793 shares                          nr         40,872
       Royce & Associates, LLC.            Royce Low-Priced Stock Fund - 219,406 shares                     nr          3,067
 *     Various Participants                Participant loans - interest rates from 5% to 11.5%              nr          6,343
                                                                                                                     --------
                                                                                                                     $290,246
                                                                                                                     ========



 *Party-in-interest

 nr - not required for participant-directed investments





                 KERR-McGEE CORPORATION SAVINGS INVESTMENT PLAN

            SCHEDULE H, LINE 4j- SCHEDULE OF REPORTABLE TRANSACTIONS

                   (Employer Identification Number 73-1612389)
                                (Plan Number 007)

                      FOR THE YEAR ENDED DECEMBER 31, 2003
                             (Thousands of dollars)


                                                                                                         (h)
                                                                                                       Current
                                                                                                        value
                                                              (c)             (d)          (g)       of asset on        (i)
          (a)                           (b)                Purchase        Selling       Cost of     transaction     Net gain
Identity of party involved     Description of asset          price          price         asset          date        or (loss)
--------------------------     --------------------        --------        -------       -------     -----------     ---------
Category (iii) - Series of transactions in excess of 5% of the Plan Assets:
---------------------------------------------------------------------------
                                                                                                     

*Kerr-McGee Corporation             Common Stock             $9,172        $     -       $ 9,172       $ 9,172         $   -

*Kerr-McGee Corporation             Common Stock             $    -        $11,412       $11,729       $11,412         $(317)




There were no category (i), (ii) or (iv) reportable transactions during the year
ended December 31, 2003.

Columns (e) and (f) are not applicable.



*Includes both participant-directed and nonparticipant-directed portions.




                                   SIGNATURES


     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
Kerr-McGee  Corporation Benefits Committee has duly caused this annual report to
be signed by the undersigned thereunto duly authorized.

                 KERR-McGEE CORPORATION SAVINGS INVESTMENT PLAN





                                    By              (Robert M. Wohleber)
                                          --------------------------------------
                                                     Robert M. Wohleber
                                          Chairman of the Kerr-McGee Corporation
                                                     Benefits Committee




Date:  June 18, 2004