Boke interest sold

Rio Tinto PLC
28 June 2004



Comalco sells Boke bauxite project interest


Comalco (Rio Tinto 100 per cent) has sold its four per cent interest in Halco
(Mining) Inc, the 51 per cent shareholder in the Boke bauxite project in Guinea,
west Africa known as Compagnie des Bauxites de Guinee, to subsidiaries of
existing Halco participants Alcan Inc. and Alcoa Inc. for US$11.75 million.



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