RNS Number : 1773Q

Rio Tinto PLC

29 July 2010

Rio Tinto plc

Transaction in Own Shares

29 July 2010

Rio Tinto plc announces that it transferred to participants in its employee share schemes the following number of its ordinary shares of 10p each, which were previously held as treasury shares.

Ordinary Shares

Date of transfer:	26 July 2010
Number of ordinary shares transferred:	100
Highest transfer price per share:	10.979
Lowest transfer price per share:	10.979

Following the above purchase, Rio Tinto plc holds 3,055,836 ordinary shares as

treasury shares. The total number of ordinary shares in issue (excluding shares

held as treasury shares) is 1,525,948,035.

For further information, please contact:

Secretarial Department

Pat Sims

Office: +44 (0) 20 7781 1910

Website: www.riotinto.com

This information is provided by RNS

The company news service from the London Stock Exchange

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