Wheaton Shareholders Approve Plan of Arrangement to Complete Merger with Goldcorp.

VANCOUVER, British Columbia -- Wheaton River Minerals Ltd. (TSX:WRM)(AMEX:WHT) is pleased to announce that its shareholders approved the proposed plan of arrangement so that Goldcorp Inc. (TSX:G)(NYSE:GG) can acquire all of the outstanding Wheaton shares not tendered to the Goldcorp offer, which expired on February 28, 2005.

The plan of arrangement was approved by 99.9% of the votes cast by shareholders voting and the arrangement is expected to close on April 15, 2005.

It is expected that Wheaton shares and Wheaton warrants will be delisted from the TSX and the AMEX at the end of the day on April 15, 2005. The Goldcorp shares to be issued under the plan of arrangement, replace the Wheaton shares on the basis of 0.25 of a Goldcorp share for each Wheaton share.

Goldcorp Series A, B and C warrants will be issued under the plan of arrangement to replace the existing Wheaton Series A, B and Common Share Purchase warrants, respectively. All three series of warrants are expected to begin trading at market open on the Toronto Stock Exchange, Monday, April 18, 2005, and the Goldcorp Series A and Series C Warrants are expected to begin trading on the NYSE at the same time.

The warrant trading symbols and terms are summarized as follows:

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Former                                 New
Symbols       Terms                    Symbols     Terms
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TSX                                    TSX
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WRM.WT        1 wt + C$1.65,           G.WT.C      4 wts + C$6.60,
               Expiry 5/30/07                       Expiry 5/30/07
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WRM.WT.A      1 wt + C$1.65,           G.WT.A      4 wts + C$6.60,
               Expiry 5/30/07                       Expiry 5/30/07
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WRM.WT.B      1 wt + C$3.10,           G.WT.B      4 wts + C$12.40,
               Expiry 8/25/08                       Expiry 8/25/08
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AMEX                                   NYSE
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WHT.WS        1 wt + C$1.65,           GG.WS.C     4 wts + C$6.60,
               Expiry 5/30/07                       Expiry 5/30/07
-------------------------------------------------------------------
WHT.WS.A      1 wt + C$1.65,           GG.WS.A     4 wts + C$6.60,
               Expiry 5/30/07                       Expiry 5/30/07
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Note: Goldcorp has two existing warrants trading on the Toronto Stock Exchange: G.WT (1 warrant entitles the holder to purchase 2.08 shares of Goldcorp at C$10 per share, until May 13, 2009), and G.WT.U (1 warrant entitles holder to purchase 2.08 shares of Goldcorp at US$12.50 per share, until April 30, 2007).

Goldcorp is the world's lowest cost million ounce gold producer, with 2005 gold production expected to exceed 1.1 million ounces of gold at a cash cost of less than US$60 per ounce. By 2007, gold production is expected to grow to over 1.5 million ounces. The combined company has a strong balance sheet with approximately US$450 million in cash and equivalents, and no debt.

Goldcorp Inc. (TSX:G) (NYSE:GG)

Wheaton River Minerals Ltd. (TSX:WRM) (AMEX:WHT)