Offer Price for Comalco is Final

Rio Tinto PLC 5 May 2000 The following was released earlier today by Rio Tinto Limited in Australia. Rio Tinto says offer price for Comalco is final Rio Tinto notes the view of the Independent Directors contained in Comalco's Target's Statement released today that the best interest of, at least, most of the minority shareholders will lie in acceptance of Rio Tinto's offer, via acceptance of the alternative seen as best suited to the particular shareholder, and the Independent Directors' recommendation that shareholders act accordingly. Rio Tinto has declared today that its offer terms of A$9.50 cash for each Comalco share, or one ordinary share of Rio Tinto Limited or one ordinary share of Rio Tinto plc for every three shares of Comalco, are final and will not be increased. The offer remains subject to the conditions contained in the Bidder's Statement. For further information, please contact: Media Relations Investor Relations John Hughes Peter Jarvis + 44 20 7753 2331 + 44 20 7753 2401 Website: www.riotinto.com Note to Editors: Rio Tinto owns 72.4 per cent of Comalco

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