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                      SECURITIES AND EXCHANGE COMMISSION

                            WASHINGTON, D.C. 20549

                             --------------------

                                  SCHEDULE TO

                              (Amendment No. 15)

           TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1)
                    OF THE SECURITIES EXCHANGE ACT OF 1934


                          WILLAMETTE INDUSTRIES, INC.
                      (Name of Subject Company (Issuer))

                            COMPANY HOLDINGS, INC.
                             WEYERHAEUSER COMPANY
                     (Names of Filing Persons -- Offerors)

                    COMMON STOCK, PAR VALUE $0.50 PER SHARE
                        (Title of Class of Securities)

                                   969133107
                     (CUSIP Number of Class of Securities)

                             Robert A. Dowdy, Esq.
                             Weyerhaeuser Company
                         Federal Way, Washington 98063
                           Telephone: (253) 924-2345

      (Name, Address and Telephone Number of Person Authorized to Receive
            Notices and Communications on Behalf of Filing Persons)

                                   Copy to:

                              Richard Hall, Esq.
                            Cravath, Swaine & Moore
                               825 Eighth Avenue
                           New York, New York 10019
                           Telephone: (212) 474-1000


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                                  SCHEDULE TO

     This Statement amends and supplements the Tender Offer Statement on
Schedule TO filed with the Securities and Exchange Commission on November 29,
2000 (as previously amended, the "Schedule TO"), relating to the offer by
Company Holdings, Inc., a Washington corporation (the "Purchaser") and a
wholly owned subsidiary of Weyerhaeuser Company, a Washington corporation
("Parent"), to purchase (1) all outstanding shares ("Shares") of common stock,
par value $0.50 per share, of Willamette Industries, Inc., an Oregon
corporation (the "Company"), and (2) unless and until validly redeemed by the
Board of Directors of the Company, the related rights to purchase shares of
Series B Junior Participating Preferred Stock, $0.50 par value per share, of
the Company (the "Rights") issued pursuant to the Rights Agreement, dated as
of February 25, 2000 by and between the Company and ChaseMellon Shareholder
Services L.L.C., as Rights Agent, at a price of $48.00 per Share, net to the
seller in cash, without interest, upon the terms and subject to the conditions
set forth in the Offer to Purchase (the "Offer to Purchase"), dated November
29, 2000, and in the related Letter of Transmittal (which, together with any
supplements or amendments, collectively constitute the "Offer"). Unless the
context otherwise requires, all references to the Shares shall be deemed to
include the associated Rights, and all references to the Rights shall be
deemed to include the benefits that may inure to holders of Rights pursuant to
the Rights Agreement.

     Capitalized terms used herein and not defined herein have the respective
meanings assigned such terms in the Offer to Purchase and the Schedule TO.

Item 11. Additional Information.

     Parent and the Purchaser acknowledge that forward-looking statements
made by Parent or the Purchaser in connection with the Offer are not entitled
to the benefit of the safe harbor protections set forth in the Private
Securities Litigation Reform Act of 1995.

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                                  SIGNATURES

     After due inquiry and to the best of their knowledge and belief, the
undersigned hereby certify that the information set forth in this statement is
true, complete and correct.

                                  COMPANY HOLDINGS, INC.,

                                     by

                                       /s/ STEVEN R. ROGEL
                                       -----------------------------
                                       Name:  Steven R. Rogel
                                       Title: President

                                  WEYERHAEUSER COMPANY,

                                     by

                                       /s/ STEVEN R. ROGEL
                                       -----------------------------
                                       Name:  Steven R. Rogel
                                       Title: President and Chief
                                              Executive Officer

           Dated: February 6, 2001


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