EXHIBIT 99.2


KERR-McGEE CORPORATION
Kerr-McGee Center
Oklahoma City, Oklahoma 73125


                    CERTIFICATION OF CHIEF FINANCIAL OFFICER
                      REGARDING PERIODIC REPORT CONTAINING
                              FINANCIAL STATEMENTS


I, Robert M. Wohleber,  the Chief  Financial  Officer of Kerr-McGee  Corporation
(the "Issuer"),  in compliance with 18 U.S.C.  Section 1350, as adopted pursuant
to Section 906 of the  Sarbanes-Oxley  Act of 2002, hereby certify in connection
with the Issuer's  Annual Report on Form 10-K for the period that ended December
31, 2002 as filed with the  Securities  and Exchange  Commission  (the "Report")
that:

     o    the Report fully  complies with the  requirements  of Section 13(a) of
          the Securities Exchange Act of 1934; and

     o    information  contained in the Report fairly presents,  in all material
          respects,  the  financial  condition  and results of operations of the
          Issuer.



/s/ Robert M. Wohleber
______________________

Robert M. Wohleber
Chief Financial Officer
March 26, 2003