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.
                                          SUBJECT COMPANY SEC FILE NO. 001-14256




The  communication  filed  herewith are fact sheets  issued on April 7, 2004, in
connection  with the merger of  Kerr-McGee  Corporation  and Westport  Resources
Corporation.

                              Kerr-McGee Fact Sheet

Profile
   Kerr-McGee Corporation is a global energy and chemical company with more than
   $10  billion  of  assets.  The  company's  core  businesses  are  oil and gas
   exploration  and  production  and the  production  and  marketing of titanium
   dioxide  pigment.  Founded in 1929,  Kerr-McGee is based in Oklahoma City and
   has been  listed on the New York Stock  Exchange  since 1956 under the ticker
   symbol KMG.

   o  Total LTM sales of $4.2 billion
   o  Total LTM operating cash flow of $1.7 billion
   o  Total 2004 capital budget of $1.015 billion, plus $300 million exploration
      expense
   o  Current annual dividend of $1.80 per share

Exploration & Production
   o  Worldwide net production of 150,000 barrels of oil per day and 726 million
      cubic feet of gas per day - 2003
   o  Worldwide proved reserves of 1,026 MM BOE - as of Dec. 31, 2003
   o  Gross undeveloped lease holdings of 69 million acres - as of Dec. 31, 2003
   o  Oil and gas exploration and production focused in  three countries (U.S. -
      Gulf of Mexico and  Onshore, U.K. North  Sea and China), with  exploration
      efforts  extending to other  international countries  (Australia, Bahamas,
      Benin, Brazil, Gabon, Morocco, Canada, Yemen, and the Danish and Norwegian
      sectors of the North Sea)

                                       2003                             Gross
                                      Proved           2003          Undeveloped
                                     Reserves       Production       Acreage (1)
                                     --------       ----------       -----------
                                     (MM BOE)        (M BOE/D)        (M Acres)

         U.S.                           707             181             4,674
         U.K. North Sea                 280              88               784
         China                           39               2             1,687
         Other International              -               -            61,911
                                      -----             ---            ------
           Total                      1,026             271            69,056
                                      =====             ===            ======
             (1) As of 12/31/03; includes discontinued operations.

   o  LTM sales of $2.9 billion
   o  LTM operating cash flow of $2.1 billion
   o  2004 capital budget of $900 million

Chemical - Titanium Dioxide Pigment
   o  Production capacity of approximately 668,000 metric tons annually - gross
   o  Third-largest worldwide producer and marketer
   o  LTM chemical sales of $1.3 billion
   o  LTM chemical operating cash flow of approximately $200 million
   o  2004 capital budget of $95 million


                          Westport Resources Fact Sheet

Profile
   Westport  Resources  Corporation is an independent  energy company engaged in
   oil and natural gas  production,  exploitation,  acquisition  and exploration
   activities  primarily in the United States. Total assets exceed $2.6 billion.
   Westport  is  based  in  Denver  and has been  listed  on the New York  Stock
   Exchange since 2000 under the ticker symbol WRC.

Exploration & Production
   o  Worldwide net  production of 22,000 barrels of oil per day and 321 million
      cubic feet of gas per day - 2003
   o  Worldwide proved reserves of 297 MM BOE - as of Dec. 31, 2003
   o  Gross undeveloped lease holdings of 1.6 million acres - as of Dec. 31,2003
   o  Top 20 U.S. independent E&P producer
   o  Operations focused in four regions of the U.S. (Northern - Rocky Mountains
      of North Dakota and  Wyoming;  Western - Uintah  County, Utah;  Southern -
      Oklahoma, Texas, Louisiana; and offshore Gulf of Mexico)

                                       2003                             Gross
                                      Proved           2003          Undeveloped
                                     Reserves       Production       Acreage (1)
                                     --------       ----------       -----------
                                     (MM BOE)        (M BOE/D)        (M Acres)

         Northern                        55              18             1,027
         Western                        110              13                79
         Southern                       108              25               182
         Gulf of Mexico                  24              20               288
                                        ---              --             -----
              Total                     297              76             1,576
                                        ===              ==             =====
                  (1) As of 12/31/03

   o  LTM sales of $734 million
   o  LTM operating cash flow of $437 million
   o  2004 capital and exploratory budget of $370 million


                           Combined Company Fact Sheet

   o  Equity market capitalization of approximately $7.7 billion
   o  Total enterprise value of approximately $11.7 billion
   o  Combined LTM operating cash flow of approximately $2.2 billion
   o  Worldwide proved reserves of approximately 1.3 B BOE - as of Dec. 31, 2003
   o  Gross undeveloped lease holdings of 71 million acres
   o  5th largest independent U.S. oil and gas producer
   o  Largest independent holder of deepwater blocks in the Gulf of Mexico
   o  Kerr-McGee annual dividend of $1.80 per share
   o  2003 Proved Reserves (MM BOE):
         As of December 31, 2003               KMG           WRC        Combined
                                               ---           ---        --------
           North American Onshore              351           273           624
           Gulf of Mexico                      356            24           380
           U.K. North Sea                      280             -           280
           China                                39             -            39
                                             -----           ---         -----
              Total                          1,026           297         1,323
                                             =====           ===         =====


                 [GRAPHIC OMITTED]                 [GRAPHIC OMITTED]
                Reserves by Product               Reserves by Location
                -------------------               --------------------
                Gas - 57%                         NA Onshore -     47%
                Oil - 43%                         Gulf of Mexico - 29%
                                                  UK North Sea -   21%
                                                  China -           3%


                               Transaction Summary


Exchange Ratio:              .71 Kerr-McGee shares for each outstanding Westport
                             share

Resulting Equity Split:      Current Kerr-McGee shareholders: approximately 67%
                             Current Westport shareholders: approximately 33%

Newly Issued Shares:         Approximately 49.4 million  shares (includes option
                             shares) of  Kerr-McGee Common  Stock (brings  total
                             shares outstanding to approximately 149 million)

Merged Company Name:         Kerr-McGee Corporation

Stock Exchange Listing:      NYSE - Ticker KMG

Principal Offices:           Oklahoma City - Headquarters
                             Houston - Exploration & Production

Accounting Treatment:        Purchase

Production Hedged:           Westport production volumes 90% hedged, second half
                             of 2004 through 2006

Merger Agreement:            Voting Agreement
                             ----------------
                             Westport's major shareholders holding more than 42%
                             of the outstanding  shares have  agreed to  vote in
                             favor of the merger

                             Conditions
                             ----------
                             The  conditions to  completing  the Merger  include
                             shareholder approvals and  expiration of  the Hart-
                             Scott-Rodino waiting period

                             Termination
                             -----------
                             The agreement  provides for a $90 million  termina-
                             tion fee plus up to $10 million  in expenses to  be
                             paid upon the occurrence of certain events

Timing:                      Expect to close during the third quarter of 2004



                                  Defined Terms

BOE:                   Barrel of oil equivalent: 6,000 cubic feet of gas : 1
                         barrel of oil
B BOE:                 Billion barrels of oil equivalent
EBITDA:                Earnings before interest, taxes, depreciation and
                         amortization
EBITDX:                Earnings before interest, taxes, depreciation,
                         amortization and exploration expense
Operating Cash Flow:   Cash flow from operations plus cash exploration expense
LTM:                   Last twelve months
M BOE/D:               Thousands of barrels of oil equivalent per day
MM BOE:                Millions of barrels of oil equivalent
TCFe:                  Trillion cubic feet of natural gas equivalent


                           IMPORTANT LEGAL INFORMATION

THIS FACT SHEET IS NOT AN OFFER TO SELL THE SECURITIES OF KERR-McGEE CORPORATION
AND IT IS NOT SOLICITING AN OFFER TO BUY THESE SECURITIES.

INVESTOR   AND   SECURITY   HOLDERS   ARE   URGED  TO  READ  THE   JOINT   PROXY
STATEMENT/PROSPECTUS   REGARDING  THE  PROPOSED   TRANSACTION  WHEN  IT  BECOMES
AVAILABLE BECAUSE IT WILL CONTAIN IMPORTANT INFORMATION.

The joint proxy  statement/prospectus will be filed with the U.S. Securities and
Exchange Commission (SEC) by Kerr-McGee Corporation and Westport Resources Corp.
Investors  and  security  holders  may  obtain a free  copy of the  joint  proxy
statement/prospectus  when it becomes  available  and other  documents  filed or
furnished by Kerr-McGee  Corporation or Westport Resources Corp. with the SEC at
the SEC's website at www.sec.gov. The joint proxy statement/prospectus and other
documents  filed or furnished by Kerr-McGee  Corporation  or Westport  Resources
Corporation  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 Resources and their respective  directors and officers may
be deemed to be participants in the  solicitation of proxies with respect to the
transactions  contemplated  by  the  merger  agreement.   Information  regarding
Kerr-McGee's  directors and officers is available in the Proxy Statement for its
2004 Annual Meeting of Stockholders,  filed March 26, 2004 with the SEC, and its
Annual  Report on Form  10-K,  filed  March 12,  2004 with the SEC.  Information
regarding Westport  Resources'  directors and officers is available in the Proxy
Statement for its 2003 Annual Meeting of Stockholders, filed April 21, 2003 with
the SEC. Other  information  about the participants in the solicitation  will be
set forth in the Joint Proxy  Statement/Prospectus  and other relevant materials
to be filed with the SEC.

Safe Harbor Language on Forward Looking Statements:

(Statements  in  this  fact  sheet   regarding  the  company's  or  management's
intentions,  beliefs or expectations,  or that otherwise speak to future events,
including resource estimates,  production rate estimates,  development  schedule
and cost estimates,  are "forward-looking  statements" within the meaning of the
U.S. Private  Securities  Litigation  Reform Act of 1995. These  forward-looking
statements  include those statements  preceded by, followed by or that otherwise
include the words "believes," "expects,"  "anticipates," "intends," "estimates,"
"projects,"  "target,"  "budget,"  "goal,"  "plans,"   "objective,"   "outlook,"
"should," or similar  words.  These  "forward-looking"  statements  also include
statements  relating  to (1)  the  impact  the  companies  expect  the  proposed
transaction to have on the combined entity's  operations,  financial  condition,
and financial  results,  (2) the companies'  expectations about their ability to
successfully  integrate the combined businesses,  (3) the amount of cost savings
and overall operational efficiencies the companies expect to realize as a result
of the proposed transaction, (4) when the companies expect to close the proposed
transaction,  (5) anticipated drilling and development opportunities and (6) the
ability of the companies to meet their stated financial goals. In addition,  any
statements  regarding  possible   commerciality,   development  plans,  capacity
expansions,  drilling of new wells, ultimate recoverability of reserves,  future
production  rates,  future  cash flows and changes in any of the  foregoing  are
forward-looking statements.

Matters discussed in these statements involve risks and uncertainties  which may
cause results to differ materially from those set forth in these statements. The
following factors, among others, could cause actual results to differ from those
set  forth  in  these   forward-looking   statements:   the  ability  to  obtain
governmental  approvals of the merger on the proposed  terms and  schedule;  the
failure of Kerr-McGee or Westport Resources  stockholders to approve the merger;
the risk that the businesses will not be integrated successfully;  the risk that
the cost savings and any synergies  from the merger may not be fully realized or
may take longer to realize than expected;  disruption  from the merger making it
more difficult to maintain relationships with customers, employees or suppliers;
the accuracy of the assumptions that underlie the statements, the success of the
oil and gas  exploration  and  production  program,  the  price  of oil and gas,
drilling risks,  uncertainties  in  interpreting  engineering  data,  demand for
consumer  products  for which  Kerr-McGee's  oil and gas  business  supplies raw
materials,  the  financial  resources  of  competitors,   changes  in  laws  and
regulations,  the ability to respond to  challenges  in  international  markets,
including changes in currency exchange rates,  political or economic  conditions
in areas  where  Kerr-McGee  operates,  trade and  regulatory  matters,  general
economic conditions,  and other factors and risks identified in the Risk Factors
sections of  Kerr-McGee's  Annual  Report on Form 10-K and  Westport  Resources'
Annual Report on Form 10-K as well as other of their SEC filings.)