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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 SCHEDULE 13D/A
           Under the Securities Exchange Act of 1934 (Amendment No. 7)

                                   ONEOK, INC.
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                     Common Stock, Par Value $0.01 per share
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    68267810
- --------------------------------------------------------------------------------
                                 (CUSIP Number)

                              Larry D. Irick, Esq.
                     Vice President and Corporate Secretary
                             Western Resources, Inc.
                             818 South Kansas Avenue
                              Topeka, Kansas 66612
                                 (785) 575-1625
- --------------------------------------------------------------------------------
           (Name, Address and Telephone Number of Person Authorized to
                      Receive Notices and Communications)

                                  May 30, 2002
- --------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

If a filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following
box:



                                  Page 1 of 9

SCHEDULE 13D CUSIP No. 68267810 - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION No. OF ABOVE PERSON WESTERN RESOURCES, INC.; 48-0290150 - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (A) (B) - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS N/A - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Kansas - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER 0 ----------------------------------------------- 8 SHARED VOTING POWER 4,714,434 NUMBER OF An additional 39,892,896 shares of Common SHARES Stock issuable in certain circumstances in BENEFICIALLY the event of the conversion (the conditions OWNED BY for which are not expected to occur within the EACH next 60 days) of 19,946,448 shares of REPORTING Series A Convertible Preferred Stock. PERSON WITH ----------------------------------------------- 9 SOLE DISPOSITIVE POWER 0 ----------------------------------------------- 10 SHARED DISPOSITIVE POWER 4,714,434 An additional 39,892,896 shares of Common Stock issuable in certain circumstances in the event of the conversion (the conditions for which are not expected to occur within the next 60 days) of 19,946,448 shares of Series A Convertible Preferred Stock. - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,714,434 An additional 39,892,896 shares of Common Stock issuable in certain circumstances in the event of the conversion (the conditions for which are not expected to occur within the next 60 days) of 19,946,448 shares of Series A Convertible Preferred Stock. Page 2 of 9

- -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 7.42% Up to 45.0% of the Common Stock outstanding in the event of conversion (the conditions for which are not expected to occur within the next 60 days) of Series A Convertible Preferred Stock. - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON CO - -------------------------------------------------------------------------------- Page 3 of 9

SCHEDULE 13D - -------------------------------------------------------------------------------- CUSIP No. 68267810 - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION No. OF ABOVE PERSON WESTAR INDUSTRIES, INC. (f/n/a WESTAR CAPITAL, INC.) 48-1092416 - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (A) (B) - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS N/A - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Kansas - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER 0 ----------------------------------------------- 8 SHARED VOTING POWER 4,714,434 NUMBER OF An additional 39,892,896 shares of Common SHARES Stock issuable in certain circumstances in the BENEFICIALLY event of the conversion (the conditions for OWNED BY which are not expected to occur within the EACH next 60 days) of 19,946,448 shares of Series A REPORTING Convertible Preferred Stock. PERSON WITH ----------------------------------------------- 9 SOLE DISPOSITIVE POWER 0 ----------------------------------------------- 10 SHARED DISPOSITIVE POWER 4,714,434 An additional 39,892,896 shares of Common Stock issuable in certain circumstances in the event of the conversion (the conditions for which are not expected to occur within the next 60 days) of 19,946,448 shares of Series A Convertible Preferred Stock. Page 4 of 9

- -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,714,434 An additional 39,892,896 shares of Common Stock issuable in certain circumstances in the event of the conversion (the conditions for which are not expected to occur within the next 60 days) of 19,946,448 shares of Series A Convertible Preferred Stock. - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 7.42% Up to 45.0% of the Common Stock outstanding in the event of conversion (the conditions for which are not expected to occur within the next 60 days) of Series A Convertible Preferred Stock. - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON CO - -------------------------------------------------------------------------------- Item 1. Security and Issuer. This statement on Schedule 13D (the "Statement") is filed by Western Resources, Inc. ("Western") and Westar Industries, Inc. (f/n/a Westar Capital, Inc.), a Kansas corporation and a wholly owned subsidiary of Western ("Westar" and, together with Western, the "Reporting Persons"), and relates to the Common Stock, par value $0.01 per share (the "Common Stock"), of ONEOK, Inc., an Oklahoma corporation (the "Issuer") which Common Stock is held by Westar. This Statement supplements and amends the statement on Schedule 13D originally filed by Western with the Commission on December 5, 1997, as amended by Amendment No. 1, filed with the Commission on November 29, 1999, Amendment No. 2, filed with the Commission on January 27, 2000, Amendment No. 3, filed with the Commission on March 8, 2000, Amendment No. 4 filed with the Commission on April 8, 2002, Amendment No. 5 filed with the Commission on April 26, 2002 and Amendment No. 6 filed with the Commission on May 23, 2002 (as amended, the "Schedule 13D"). The address of the principal executive offices of the Issuer is: ONEOK, Inc., 100 West Fifth Street, Tulsa, Oklahoma 74103. Item 4. Purpose of the Transaction. The last paragraph of Item 4 is deleted and following disclosure is in lieu therof (capitalized terms not otherwise defined herein are used as defined in the Shareholder Agreement filed as Exhibit 3 to this Schedule 13D): Page 5 of 9

On May 30, 2002, notice was given pursuant to Section 3.4(b) of the Shareholder Agreement with ONEOK, Inc. ("ONEOK") of the intention of Westar Industries, Inc. ("Westar Industries") to sell all of the common stock and preferred stock of ONEOK owned by Westar Industries to a third person. As a result of this notice having been given, ONEOK or its designee has the right to purchase the common stock and preferred stock at a cash sales price of $21.77 per share for a period ending on the later of 90 days after May 30, 2002 and 30 days from the date of receipt of all necessary regulatory approvals, but in no event later than 180 days after May 30, 2002. If ONEOK does not purchase the stock during such period, the Company may sell the stock to a third person within a 16 month period thereafter. A copy of the Sale Notice sent to ONEOK is attached as an exhibit hereto. The Reporting Persons have engaged JPMorgan to advise them with respect to this matter. Item 7. Material to be Filed as Exhibits. The following is added as an exhibit to this Schedule 13D: Exhibit 5 - Sale Notice dated May 30, 2002 addressed to ONEOK, Inc. from Western Resources, Inc. and Westar Industries, Inc. Page 6 of 9

Signature After reasonable inquiry and to the best of our knowledge and belief, the undersigned certify that the information set forth in this statement is true, complete and correct. Dated: May 30, 2002 WESTERN RESOURCES, INC. By: /s/ Larry D. Irick ______________________________________________ Name: Larry D. Irick, Esq. Title: Vice President and Corporate Secretary WESTAR INDUSTRIES, INC. By: /s/ Paul R. Geist ______________________________________________ Name: Paul R. Geist Title: President Page 7 of 9

Exhibit 5 May 30, 2002 ONEOK, Inc. 100 W. Fifth Street Tulsa, OK 74103-4398 Attn: Mr. David L. Kyle, President and Chief Executive Officer Re: Shareholder Agreement dated as of November 26, 1997 between WAI, Inc. (now ONEOK, Inc.) and Western Resources, Inc.: Section 3.4(b) Sale Notice Dear Sirs: Notice is hereby given pursuant to Section 3.4(b) of the above referenced Shareholder Agreement of the intention of the undersigned to sell 4,714,434 shares of Common Stock, par value $.01 per share (the "Common Stock") of ONEOK, Inc. (the "Company"), and 19,946,448 shares of Series A Convertible Preferred Stock, par value $.01 per share of the Company, (collectively with the Common Stock, the "Sale Securities") representing all of the Common Stock and Preferred Stock of the Company beneficially owned by us through our wholly owned subsidiary Westar Industries, Inc., to a purchaser who is not an Affiliate of the undersigned. Such a proposed transfer would represent upon Transfer Voting Power of more than 5% of the Company. Therefore, the procedures pursuant to Section 3.4(b) are hereby invoked. The cash price per share at which the Company or its designee may purchase the Sale Securities within the Sale Period specified in Section 3.4 (b) is $21.77 per share (equal to 98.5% of the Market Price of the Sale Securities determined as of the date of this notice.) We look forward to hearing from the Company within the Sale Period so that we know how to proceed in connection with our proposed sale of the Sale Securities. This Sale Notice is given by Western Resources, Inc. on behalf of itself and on behalf of Westar Industries, Inc., as Seller. Page 8 of 9

Capitalized terms not defined herein are used as defined in the Shareholder Agreement. Very truly yours, WESTERN RESOURCES, INC. By: /s/ David C. Wittig ______________________________________________ Name: David c. Wittig Title: Chairman, President and Chief Executive Officer WESTAR INDUSTRIES, INC. By: /s/ Paul R. Geist ______________________________________________ Name: Paul R. Geist Title: President cc: Gable Gotwals Mock Schwabe Kihle 100 W. 5th Street Suite 1000 Tulsa, OK 74103 Attn: Donald A. Kihle, Esq. Fax No. 918-588-7873 Page 9 of 9