Filed by Goldcorp Inc.
Pursuant to Rule 165 and Rule 425 under the United States Securities Act of 1933, as amended

Subject Company: Wheaton River Minerals Ltd.
Commission File No. 333-121725
Date: January 13, 2005

PRESS RELEASE

Toronto, January 12, 2005 — GOLDCORP INC. (GG:NYSE; G:TSX) is pleased to announce the engagement of Bear, Stearns & Co. Inc. as co-financial advisor with GMP Securities Ltd., to the company in connection with the company’s proposed acquisition of Wheaton River Minerals Ltd., the unsolicited proposal by Glamis Gold Ltd. or other potential transactions.

Goldcorp’s Red Lake Mine is the richest gold mine in the world. The Company is in excellent financial condition: has NO DEBT, a Large Treasury, positive Cash Flow and Earnings and pays a Dividend twelve times a year! GOLDCORP is UNHEDGED and currently withholds one-third of annual gold production in anticipation of higher gold prices. Goldcorp’s shares are listed on the New York and Toronto Stock Exchanges under the trading symbols of GG and G, respectively and its options trade on the American Stock Exchange (AMEX), the Chicago Board of Options Exchange (CBOE) and the Pacific Stock Exchange (PCX) in the United States and on the Montreal Exchange (MX) in Canada.

This press release is neither an offer to purchase securities nor a solicitation of an offer to sell securities. Goldcorp has filed a take-over bid circular with Canadian securities regulatory authorities and a registration statement and prospectus and tender offer statement with the United States Securities and Exchange Commission and Wheaton River has filed a directors’ circular with Canadian securities regulatory authorities and a solicitation/recommendation statement with United States Securities and Exchange Commission with the respect to the offer. Investors and shareholders are strongly advised to read the take-over bid circular and the registration statement and prospectus and tender offer statement (including the offer to purchase, letter of transmittal and related documents) and the related directors’ circular and solicitation/recommendation statement, as well as any amendments and supplements to those documents, because they contain important information. Investors and shareholders may obtain a free copy of the take-over bid circular, the related letter of transmittal and the registration statement and prospectus and tender offer statement and certain other offer documents, as well as the directors’ circular, at www.sedar.com or from the Securities and Exchange Commission’s website at www.sec.gov. Free copies of these documents can also be obtained by directing a request to Goldcorp at the address referred to below. YOU SHOULD READ THE TAKE-OVER BID CIRCULAR AND DIRECTORS’ CIRCULAR CAREFULLY BEFORE MAKING A DECISION CONCERNING THE OFFER.

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