Statement re Comalco

Rio Tinto PLC 6 June 2002 Comalco increases stake in Boyne Smelters Limited Comalco, a wholly-owned subsidiary of Rio Tinto, has signed an agreement with Kobe Steel, Ltd. to purchase Kobe's interest in the Boyne Smelters Limited aluminium smelter at Gladstone, Australia. Kobe has a 9.5 per cent interest in reduction lines 1 and 2 at the Boyne Island smelter (and nil interest in reduction line 3). The value of the transaction is approximately US$78.5 million. The transaction will increase Comalco's total shareholding in the Boyne Island smelter from 54.19 per cent to 59.39 per cent. The transaction is subject to certain approvals, including the Foreign Investment Review Board, and the consent of the other Boyne Smelters Participants. For further information, please contact: LONDON AUSTRALIA Media Relations Media Relations John Hughes Ian Head + 44 (0) 20 7753 2331 +61 (0) 3 9283 3620 Investor Relations Investor Relations Peter Cunningham Dave Skinner + 44 (0) 20 7753 2401 +61 (0) 3 9283 3628 Richard Brimelow Daphne Morros + 44 (0) 20 7753 2326 +61 (0) 3 9283 3639 Website: www.riotinto.com Note to Editors Following completion of the transaction, expected in the third quarter of 2002, the new ownership structure of Boyne Smelters Limited and interest in reduction lines 1 and 2, and reduction line 3 will become: Shareholding in Boyne Interest in reduction lines Interest in reduction line 3 Smelters Limited 1 and 2 % % % Comalco 59.39 59.5 59.25 SLM Australia 9.29 17.0 - SLMA No. 2 7.71 - 17.0 Ryowa Development 5.19 9.5 - Ryowa Development II 6.46 - 14.25 YKK Aluminium 9.5 9.5 9.5 Sumitomo Chemical 2.46 4.5 - SLM Australia and SLMA No. 2 are owned by Sumitomo Light Metal Industries, Marubeni and Sumitomo Corporation. Ryowa Development is owned by Mitsubishi Corporation and Mitsubishi Australia. Ryowa Development II is owned by Mitsubishi Corporation and Mitsubishi Materials Corporation. This information is provided by RNS The company news service from the London Stock Exchange

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