Share repurchase programme

Rio Tinto PLC 08 December 2006 Rio Tinto share repurchase programme Rio Tinto plc ('Rio Tinto') announces that it has commenced a programme to buy back shares during the period which commences on 11 December 2006 and ends on the announcement of Rio Tinto's results on 1 February 2007. The shares will be held in treasury. The buy back programme will be managed by an independent third party, which makes its trading decisions in relation to Rio Tinto's securities independently of, and uninfluenced by, Rio Tinto. Any acquisitions will be effected within certain pre-set parameters, and in accordance with both Rio Tinto's general authority to repurchase shares and Chapter 12 of the Listing Rules which requires that the maximum price paid be limited to no more than 5 per cent above the average market value for the shares as derived from the London Stock Exchange Daily Official List for the five business days immediately prior to such purchase. Rio Tinto confirms that it currently has no unpublished price sensitive information. For further information, please contact: LONDON AUSTRALIA Media Relations Media Relations Nick Cobban Ian Head Office: +44 (0) 20 7753 2305 Office: +61 (0) 3 9283 3620 Mobile: +44 (0) 7920 041 003 Mobile: +61 (0) 408 360 101 Investor Relations Investor Relations Nigel Jones Dave Skinner Office: +44 (0) 20 7753 2401 Office: +61 (0) 3 9283 3628 Mobile: +44 (0) 7917 227 365 Mobile: +61 (0) 408 335 309 David Ovington Susie Creswell Office: +44 (0) 20 7753 2326 Office: +61 (0) 3 9283 3639 Mobile: +44 (0) 7920 010 978 Mobile: +61 (0) 418 933 792 Website: www.riotinto.com High resolution photographs available at: http://www.newscast.co.uk This information is provided by RNS The company news service from the London Stock Exchange

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Rio Tinto (RIO)
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