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  Quarterly  Report on Form 10-Q for the period that ended June
30, 2002 as filed with the  Securities  and Exchange  Commission  (the "Report")
that:

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

      *  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
                                                  August 9, 2002