New independent resource estimate for Ivanhoe's Oyu Tolgoi copper/gold project in Mongolia to be discussed during a webcast Tuesday, May 3, 2005 TORONTO, May 2 /PRNewswire-FirstCall/ -- Ivanhoe Mines will host a live webcast on Tuesday, May 3, at 9:00 a.m. Eastern Time (6:00 a.m. Pacific Time) to discuss a new independent estimate of copper and gold resources at the company's Hugo Dummett Deposit and Southern Oyu Deposits at the Oyu Tolgoi Project (Turquoise Hill) in Mongolia. Details of the new resource estimate will be announced in a news release to be issued by Ivanhoe Mines on Tuesday, May 3, prior to the webcast. Once issued, a copy of the release will be available on the company's website at http://www.ivanhoemines.com/. AMEC Americas Limited, of Canada, is preparing the new resource estimate under the direction of Stephen Juras, P.Geo., and Dr. Harry Parker, Ch. P. Geol., in accordance with Canadian regulatory requirements set out in National Instrument 43-101. The webcast will be available at http://www.ivanhoemines.com/ or http://www.ccnmatthews.com/. Ivanhoe shares are listed on the New York and Toronto stock exchanges under the symbol IVN. Information contacts: +1.604.688.5755 - Investors: Bill Trenaman / Media: Bob Williamson DATASOURCE: Ivanhoe Mines Ltd. CONTACT: Information contacts: (604) 688-5755 - Investors: Bill Trenaman; Media: Bob Williamson; To request a free copy of this organization's annual report, please go to http://www.newswire.ca/ and click on reports@cnw.

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