FILED BY KERR-MCGEE CORPORATION
                                                  PURSUANT TO RULE 425 UNDER THE
                                         SECURITIES ACT OF 1933 AND DEEMED FILED
                                               PURSUANT TO RULE 14A-12 UNDER THE
                                                 SECURITIES EXCHANGE ACT OF 1934

                                      SUBJECT COMPANY:  WESTPORT RESOURCES CORP.
                                              SECURITIES ACT FILE NO. 333-114886





A production  guidance table, which includes the expected oil and gas production
of  Kerr-McGee  Corporation  and Westport  Resources  Corporation,  was filed by
Kerr-McGee  Corporation  under  cover of Form 8-K today and is  incorporated  by
reference into this filing.



                          IMPORTANT LEGAL INFORMATION

THE TABLE IS NOT AN OFFER TO SELL THE SECURITIES OF KERR-MCGEE  CORPORATION  AND
IT IS NOT SOLICITING AN OFFER TO BUY THESE SECURITIES.

INVESTORS  AND  SECURITY  HOLDERS ARE URGED TO READ THE  DEFINITIVE  JOINT PROXY
STATEMENT/PROSPECTUS  REGARDING  THE  PROPOSED  TRANSACTION  BECAUSE IT CONTAINS
IMPORTANT INFORMATION.

     Kerr-McGee  Corporation  has filed a  Registration  Statement on Form S-4/A
with the U.S.  Securities and Exchange  Commission (SEC) containing a definitive
joint proxy  statement/prospectus  regarding  the proposed  transaction  between
Kerr-McGee  Corporation  and  Westport  Resources  Corporation.   Investors  and
security  holders  may  obtain  a  free  copy  of  the  definitive  joint  proxy
statement/prospectus  and other  documents  filed or furnished by  Kerr-McGee or
Westport  with  the  SEC  at  the  SEC's  website,  www.sec.gov.  Copies  of the
definitive  joint  proxy  statement/prospectus  and  other  documents  filed  or
furnished by Kerr-McGee or Westport may also be obtained for free by directing a
request to Kerr-McGee  Corporation,  Attn: Corporate Secretary,  P.O. Box 25861,
Oklahoma  City,  Oklahoma  73125 or to  Westport  Resources  Corporation,  Attn:
Investor Relations, 1670 Broadway, Suite 2800, Denver, Colorado 80202.

     Kerr-McGee,  Westport and their  respective  directors  and officers may be
deemed to be  participants  in the  solicitation  of proxies with respect to the
proposed transaction  involving Kerr-McGee and Westport.  Information  regarding
Kerr-McGee's and Westport's  respective directors and officers and a description
of their direct and indirect  interests,  by security holdings or otherwise,  is
available in the definitive  joint proxy  statement/prospectus  contained in the
above referenced  Registration Statement on Form S-4/A filed with the SEC on May
18, 2004.