**Exhibit
      24**





**KERR-McGEE
      CORPORATION**








**POWER
      OF ATTORNEY**














**WHEREAS** ,
      Kerr-McGee Corporation, a Delaware corporation ("Company"), intends to file
      with
      the Securities and Exchange Commission ("Commission") under the Securities
      Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the year
      ended December 31, 2005 ("Form 10-K") with such amendment or amendments thereto
      as may be necessary or appropriate from time to time, together with any and
      all
      exhibits and other relevant or associated documents.








**NOW,
      THEREFORE** ,
      the
      undersigned in his capacity as a Director of the Company, does hereby appoint
      Gregory F. Pilcher, John M. Rauh and Robert M. Wohleber, and each of them
      severally, his true and lawful attorneys or attorney-in-fact and agents or
      agent
      with power to act with or without the other and with full power of substitution
      and resubstitution, to execute for him and in his name, place and stead, in
      his
      capacity as a Director of the Company, the Form 10-K and any and all amendments
      thereto, as said attorneys or each of them shall deem necessary or appropriate,
      together with all instruments necessary or incidental in connection therewith,
      and to file the same or cause the same to be filed with the Commission. Each
      of
      said attorneys shall have full power and authority to do and perform in the
      name
      and on behalf of the undersigned, in any and all capacities, each act whatsoever
      necessary or desirable to be done in the premises, as fully and to all intents
      and purposes as the undersigned might or could do in person, the undersigned
      hereby ratifying and approving the acts of said attorney or
      attorneys.








**IN
      WITNESS WHEREOF** ,
      the
      undersigned has executed this instrument effective March 8, 2006.














/s/
      Luke R. Corbett


Luke
      R.
      Corbett,


Chief
      Executive Officer and Director





**KERR-McGEE
      CORPORATION**








**POWER
      OF ATTORNEY**














**WHEREAS** ,
      Kerr-McGee Corporation, a Delaware corporation ("Company"), intends to file
      with
      the Securities and Exchange Commission ("Commission") under the Securities
      Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the year
      ended December 31, 2005 ("Form 10-K") with such amendment or amendments thereto
      as may be necessary or appropriate from time to time, together with any and
      all
      exhibits and other relevant or associated documents.








**NOW,
      THEREFORE** ,
      the
      undersigned in his capacity as a Director of the Company, does hereby appoint
      Luke R. Corbett, Gregory F. Pilcher, John M. Rauh and Robert M. Wohleber, and
      each of them severally, his true and lawful attorneys or attorney-in-fact and
      agents or agent with power to act with or without the other and with full power
      of substitution and resubstitution, to execute for him and in his name, place
      and stead, in his capacity as a Director of the Company, the Form 10-K and
      any
      and all amendments thereto, as said attorneys or each of them shall deem
      necessary or appropriate, together with all instruments necessary or incidental
      in connection therewith, and to file the same or cause the same to be filed
      with
      the Commission. Each of said attorneys shall have full power and authority
      to do
      and perform in the name and on behalf of the undersigned, in any and all
      capacities, each act whatsoever necessary or desirable to be done in the
      premises, as fully and to all intents and purposes as the undersigned might
      or
      could do in person, the undersigned hereby ratifying and approving the acts
      of
      said attorney or attorneys.








**IN
      WITNESS WHEREOF** ,
      the
      undersigned has executed this instrument effective March 8, 2006.














/s/
      William E. Bradford


William
      E. Bradford, Director





**KERR-McGEE
      CORPORATION**








**POWER
      OF ATTORNEY**














**WHEREAS** ,
      Kerr-McGee Corporation, a Delaware corporation ("Company"), intends to file
      with
      the Securities and Exchange Commission ("Commission") under the Securities
      Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the year
      ended December 31, 2005 ("Form 10-K") with such amendment or amendments thereto
      as may be necessary or appropriate from time to time, together with any and
      all
      exhibits and other relevant or associated documents.








**NOW,
      THEREFORE** ,
      the
      undersigned in her capacity as a Director of the Company, does hereby appoint
      Luke R. Corbett, Gregory F. Pilcher, John M. Rauh and Robert M. Wohleber, and
      each of them severally, her true and lawful attorneys or attorney-in-fact and
      agents or agent with power to act with or without the other and with full power
      of substitution and resubstitution, to execute for him and in her name, place
      and stead, in her capacity as a Director of the Company, the Form 10-K and
      any
      and all amendments thereto, as said attorneys or each of them shall deem
      necessary or appropriate, together with all instruments necessary or incidental
      in connection therewith, and to file the same or cause the same to be filed
      with
      the Commission. Each of said attorneys shall have full power and authority
      to do
      and perform in the name and on behalf of the undersigned, in any and all
      capacities, each act whatsoever necessary or desirable to be done in the
      premises, as fully and to all intents and purposes as the undersigned might
      or
      could do in person, the undersigned hereby ratifying and approving the acts
      of
      said attorney or attorneys.








**IN
      WITNESS WHEREOF** ,
      the
      undersigned has executed this instrument effective March 8, 2006.














/s/
      Sylvia A. Earle


Sylvia
      A. Earle, Director





**KERR-McGEE
      CORPORATION**








**POWER
      OF ATTORNEY**














**WHEREAS** ,
      Kerr-McGee Corporation, a Delaware corporation ("Company"), intends to file
      with
      the Securities and Exchange Commission ("Commission") under the Securities
      Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the year
      ended December 31, 2005 ("Form 10-K") with such amendment or amendments thereto
      as may be necessary or appropriate from time to time, together with any and
      all
      exhibits and other relevant or associated documents.








**NOW,
      THEREFORE** ,
      the
      undersigned in his capacity as a Director of the Company, does hereby appoint
      Luke R. Corbett, Gregory F. Pilcher, John M. Rauh and Robert M. Wohleber, and
      each of them severally, his true and lawful attorneys or attorney-in-fact and
      agents or agent with power to act with or without the other and with full power
      of substitution and resubstitution, to execute for him and in his name, place
      and stead, in his capacity as a Director of the Company, the Form 10-K and
      any
      and all amendments thereto, as said attorneys or each of them shall deem
      necessary or appropriate, together with all instruments necessary or incidental
      in connection therewith, and to file the same or cause the same to be filed
      with
      the Commission. Each of said attorneys shall have full power and authority
      to do
      and perform in the name and on behalf of the undersigned, in any and all
      capacities, each act whatsoever necessary or desirable to be done in the
      premises, as fully and to all intents and purposes as the undersigned might
      or
      could do in person, the undersigned hereby ratifying and approving the acts
      of
      said attorney or attorneys.








**IN
      WITNESS WHEREOF** ,
      the
      undersigned has executed this instrument effective March 8, 2006.














/s/
      David C. Genever-Watling


David
      C. Genever-Watling, Director





**KERR-McGEE
      CORPORATION**








**POWER
      OF ATTORNEY**














**WHEREAS** ,
      Kerr-McGee Corporation, a Delaware corporation ("Company"), intends to file
      with
      the Securities and Exchange Commission ("Commission") under the Securities
      Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the year
      ended December 31, 2005 ("Form 10-K") with such amendment or amendments thereto
      as may be necessary or appropriate from time to time, together with any and
      all
      exhibits and other relevant or associated documents.








**NOW,
      THEREFORE** ,
      the
      undersigned in his capacity as a Director of the Company, does hereby appoint
      Luke R. Corbett, Gregory F. Pilcher, John M. Rauh and Robert M. Wohleber, and
      each of them severally, his true and lawful attorneys or attorney-in-fact and
      agents or agent with power to act with or without the other and with full power
      of substitution and resubstitution, to execute for him and in his name, place
      and stead, in his capacity as a Director of the Company, the Form 10-K and
      any
      and all amendments thereto, as said attorneys or each of them shall deem
      necessary or appropriate, together with all instruments necessary or incidental
      in connection therewith, and to file the same or cause the same to be filed
      with
      the Commission. Each of said attorneys shall have full power and authority
      to do
      and perform in the name and on behalf of the undersigned, in any and all
      capacities, each act whatsoever necessary or desirable to be done in the
      premises, as fully and to all intents and purposes as the undersigned might
      or
      could do in person, the undersigned hereby ratifying and approving the acts
      of
      said attorney or attorneys.








**IN
      WITNESS WHEREOF** ,
      the
      undersigned has executed this instrument effective March 8, 2006.














/s/
      Martin C. Jischke


Martin
      C. Jischke, Director





**KERR-McGEE
      CORPORATION**








**POWER
      OF ATTORNEY**














**WHEREAS** ,
      Kerr-McGee Corporation, a Delaware corporation ("Company"), intends to file
      with
      the Securities and Exchange Commission ("Commission") under the Securities
      Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the year
      ended December 31, 2005 ("Form 10-K") with such amendment or amendments thereto
      as may be necessary or appropriate from time to time, together with any and
      all
      exhibits and other relevant or associated documents.








**NOW,
      THEREFORE** ,
      the
      undersigned in his capacity as a Director of the Company, does hereby appoint
      Luke R. Corbett, Gregory F. Pilcher, John M. Rauh and Robert M. Wohleber, and
      each of them severally, his true and lawful attorneys or attorney-in-fact and
      agents or agent with power to act with or without the other and with full power
      of substitution and resubstitution, to execute for him and in his name, place
      and stead, in his capacity as a Director of the Company, the Form 10-K and
      any
      and all amendments thereto, as said attorneys or each of them shall deem
      necessary or appropriate, together with all instruments necessary or incidental
      in connection therewith, and to file the same or cause the same to be filed
      with
      the Commission. Each of said attorneys shall have full power and authority
      to do
      and perform in the name and on behalf of the undersigned, in any and all
      capacities, each act whatsoever necessary or desirable to be done in the
      premises, as fully and to all intents and purposes as the undersigned might
      or
      could do in person, the undersigned hereby ratifying and approving the acts
      of
      said attorney or attorneys.








**IN
      WITNESS WHEREOF** ,
      the
      undersigned has executed this instrument effective March 8, 2006.














/s/
      Robert O. Lorenz


Robert
      O. Lorenz, Director





**KERR-McGEE
      CORPORATION**








**POWER
      OF ATTORNEY**














**WHEREAS** ,
      Kerr-McGee Corporation, a Delaware corporation ("Company"), intends to file
      with
      the Securities and Exchange Commission ("Commission") under the Securities
      Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the year
      ended December 31, 2005 ("Form 10-K") with such amendment or amendments thereto
      as may be necessary or appropriate from time to time, together with any and
      all
      exhibits and other relevant or associated documents.








**NOW,
      THEREFORE** ,
      the
      undersigned in his capacity as a Director of the Company, does hereby appoint
      Luke R. Corbett, Gregory F. Pilcher, John M. Rauh and Robert M. Wohleber, and
      each of them severally, his true and lawful attorneys or attorney-in-fact and
      agents or agent with power to act with or without the other and with full power
      of substitution and resubstitution, to execute for him and in his name, place
      and stead, in his capacity as a Director of the Company, the Form 10-K and
      any
      and all amendments thereto, as said attorneys or each of them shall deem
      necessary or appropriate, together with all instruments necessary or incidental
      in connection therewith, and to file the same or cause the same to be filed
      with
      the Commission. Each of said attorneys shall have full power and authority
      to do
      and perform in the name and on behalf of the undersigned, in any and all
      capacities, each act whatsoever necessary or desirable to be done in the
      premises, as fully and to all intents and purposes as the undersigned might
      or
      could do in person, the undersigned hereby ratifying and approving the acts
      of
      said attorney or attorneys.








**IN
      WITNESS WHEREOF** ,
      the
      undersigned has executed this instrument effective March 8, 2006.














/s/
      Michael Portillo


Michael
      Portillo, Director





**KERR-McGEE
      CORPORATION**








**POWER
      OF ATTORNEY**














**WHEREAS** ,
      Kerr-McGee Corporation, a Delaware corporation ("Company"), intends to file
      with
      the Securities and Exchange Commission ("Commission") under the Securities
      Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the year
      ended December 31, 2005 ("Form 10-K") with such amendment or amendments thereto
      as may be necessary or appropriate from time to time, together with any and
      all
      exhibits and other relevant or associated documents.








**NOW,
      THEREFORE** ,
      the
      undersigned in his capacity as a Director of the Company, does hereby appoint
      Luke R. Corbett, Gregory F. Pilcher, John M. Rauh and Robert M. Wohleber, and
      each of them severally, his true and lawful attorneys or attorney-in-fact and
      agents or agent with power to act with or without the other and with full power
      of substitution and resubstitution, to execute for him and in his name, place
      and stead, in his capacity as a Director of the Company, the Form 10-K and
      any
      and all amendments thereto, as said attorneys or each of them shall deem
      necessary or appropriate, together with all instruments necessary or incidental
      in connection therewith, and to file the same or cause the same to be filed
      with
      the Commission. Each of said attorneys shall have full power and authority
      to do
      and perform in the name and on behalf of the undersigned, in any and all
      capacities, each act whatsoever necessary or desirable to be done in the
      premises, as fully and to all intents and purposes as the undersigned might
      or
      could do in person, the undersigned hereby ratifying and approving the acts
      of
      said attorney or attorneys.








**IN
      WITNESS WHEREOF** ,
      the
      undersigned has executed this instrument effective March 8, 2006.














/s/
      Leroy C. Richie


Leroy
      C. Richie, Director





**KERR-McGEE
      CORPORATION**








**POWER
      OF ATTORNEY**














**WHEREAS** ,
      Kerr-McGee Corporation, a Delaware corporation ("Company"), intends to file
      with
      the Securities and Exchange Commission ("Commission") under the Securities
      Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the year
      ended December 31, 2005 ("Form 10-K") with such amendment or amendments thereto
      as may be necessary or appropriate from time to time, together with any and
      all
      exhibits and other relevant or associated documents.








**NOW,
      THEREFORE** ,
      the
      undersigned in his capacity as a Director of the Company, does hereby appoint
      Luke R. Corbett, Gregory F. Pilcher, John M. Rauh and Robert M. Wohleber, and
      each of them severally, his true and lawful attorneys or attorney-in-fact and
      agents or agent with power to act with or without the other and with full power
      of substitution and resubstitution, to execute for him and in his name, place
      and stead, in his capacity as a Director of the Company, the Form 10-K and
      any
      and all amendments thereto, as said attorneys or each of them shall deem
      necessary or appropriate, together with all instruments necessary or incidental
      in connection therewith, and to file the same or cause the same to be filed
      with
      the Commission. Each of said attorneys shall have full power and authority
      to do
      and perform in the name and on behalf of the undersigned, in any and all
      capacities, each act whatsoever necessary or desirable to be done in the
      premises, as fully and to all intents and purposes as the undersigned might
      or
      could do in person, the undersigned hereby ratifying and approving the acts
      of
      said attorney or attorneys.








**IN
      WITNESS WHEREOF** ,
      the
      undersigned has executed this instrument effective March 8, 2006.














/s/
      William F. Wallace


William
      F. Wallace, Director





**KERR-McGEE
      CORPORATION**








**POWER
      OF ATTORNEY**














**WHEREAS** ,
      Kerr-McGee Corporation, a Delaware corporation ("Company"), intends to file
      with
      the Securities and Exchange Commission ("Commission") under the Securities
      Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the year
      ended December 31, 2005 ("Form 10-K") with such amendment or amendments thereto
      as may be necessary or appropriate from time to time, together with any and
      all
      exhibits and other relevant or associated documents.








**NOW,
      THEREFORE** ,
      the
      undersigned in her capacity as a Director of the Company, does hereby appoint
      Luke R. Corbett, Gregory F. Pilcher, John M. Rauh and Robert M. Wohleber, and
      each of them severally, her true and lawful attorneys or attorney-in-fact and
      agents or agent with power to act with or without the other and with full power
      of substitution and resubstitution, to execute for him and in her name, place
      and stead, in her capacity as a Director of the Company, the Form 10-K and
      any
      and all amendments thereto, as said attorneys or each of them shall deem
      necessary or appropriate, together with all instruments necessary or incidental
      in connection therewith, and to file the same or cause the same to be filed
      with
      the Commission. Each of said attorneys shall have full power and authority
      to do
      and perform in the name and on behalf of the undersigned, in any and all
      capacities, each act whatsoever necessary or desirable to be done in the
      premises, as fully and to all intents and purposes as the undersigned might
      or
      could do in person, the undersigned hereby ratifying and approving the acts
      of
      said attorney or attorneys.








**IN
      WITNESS WHEREOF** ,
      the
      undersigned has executed this instrument effective March 8, 2006.














/s/
      Farah M. Walters


Farah
      M. Walters, Director





**KERR-McGEE
      CORPORATION**








**POWER
      OF ATTORNEY**














**WHEREAS** ,
      Kerr-McGee Corporation, a Delaware corporation ("Company"), intends to file
      with
      the Securities and Exchange Commission ("Commission") under the Securities
      Exchange Act of 1934, as amended, an Annual Report on Form 10-K for the year
      ended December 31, 2005 ("Form 10-K") with such amendment or amendments thereto
      as may be necessary or appropriate from time to time, together with any and
      all
      exhibits and other relevant or associated documents.








**NOW,
      THEREFORE** ,
      the
      undersigned in his capacity as a Director of the Company, does hereby appoint
      Luke R. Corbett, Gregory F. Pilcher, John M. Rauh and Robert M. Wohleber, and
      each of them severally, his true and lawful attorneys or attorney-in-fact and
      agents or agent with power to act with or without the other and with full power
      of substitution and resubstitution, to execute for him and in his name, place
      and stead, in his capacity as a Director of the Company, the Form 10-K and
      any
      and all amendments thereto, as said attorneys or each of them shall deem
      necessary or appropriate, together with all instruments necessary or incidental
      in connection therewith, and to file the same or cause the same to be filed
      with
      the Commission. Each of said attorneys shall have full power and authority
      to do
      and perform in the name and on behalf of the undersigned, in any and all
      capacities, each act whatsoever necessary or desirable to be done in the
      premises, as fully and to all intents and purposes as the undersigned might
      or
      could do in person, the undersigned hereby ratifying and approving the acts
      of
      said attorney or attorneys.








**IN
      WITNESS WHEREOF** ,
      the
      undersigned has executed this instrument effective March 8, 2006.














/s/
      Ian
      L. White-Thomson


Ian
      L.
      White-Thomson, Director