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  is a memo  issued  on  April  7,  2004,  in
connection  with the merger of  Kerr-McGee  Corporation  and Westport  Resources
Corporation.

[GRAPHIC OMITTED][GRAPHIC OMITTED]

To:       All Employees

From:     Luke Corbett, Chairman and Chief Executive Officer

Date:     April 7, 2004

     This morning,  Kerr-McGee and Westport Resources  announced a merger valued
at approximately  $3.4 billion.  The company will retain the Kerr-McGee name and
will be based in Oklahoma  City.  There are numerous  strategic  benefits to our
company from this merger.

     Westport's  strong base of U.S. onshore natural gas assets  complements our
existing  property  base.  These new assets,  particularly  the Greater  Natural
Buttes  area in the Uinta  basin in Utah,  contain  an  extensive  inventory  of
low-risk  exploitation  opportunities similar to our Wattenberg field outside of
Denver.  We  believe  that  we  will be  able  to  capitalize  on our  tight-gas
development  expertise  learned at  Wattenberg in this area.  Likewise,  we also
believe that we will benefit from the  knowledge  base that  Westport  brings to
Kerr-McGee.

     The nature of the opportunities that these new properties offer complements
our  high-potential  deepwater  exploratory  program and will reduce the overall
risk profile  associated with achieving our annual production  replacement.  Our
combined  reserves,  which will increase nearly 30% to approximately 1.3 billion
barrels of oil equivalent,  will be better balanced with high-value  natural gas
assets  predominantly  in the U.S.  onshore and Gulf of Mexico regions and crude
oil in the gulf and internationally.

     In addition,  this  transaction  will enhance the financial  flexibility of
Kerr-McGee.  Our net debt as a percent of total  capitalization  will decline to
approximately 42% and annual free cash flow is expected to increase by more than
$150 million.  Part of this increased cash flow is attributable to expected cost
savings of approximately $40 million annually. Obviously, a portion of this will
come from staff reductions associated with duplicate positions.

     The Kerr-McGee  and Westport  employees are critical to the success of this
merger.  We want to select the most  qualified  employees for the positions that
will be available whether it is a Kerr-McGee employee or a Westport employee. We
will work very hard to go through the staffing  process in a timely manner.  The
majority of the employees are in the oil and gas corporation; however, there are
some employees that will be in our shared services  organization.  The employees
of Kerr-McGee and Westport will be the ones who make this merger a success.

     These are exciting  times for Kerr-McGee  and Westport.  Employee  meetings
will begin on Thursday to discuss this transaction in greater detail.  Thank you
for your continued commitment and contributions to our success.


                           IMPORTANT LEGAL INFORMATION

THIS MEMO 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 memo  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.