Lihir Gold Limited Share Allocation on Merger

Rio Tinto PLC 8 February 2000 The following was released earlier today in Australia by Lihir Gold Limited and Niugini Mining Limited. Share Allocation on Merger by Scheme of Arrangement Lihir Gold Limited ('Lihir') and Niugini Mining Limited ('Niugini Mining') are pleased to announce that, following approval on 1 February 2000 by the PNG National Court of the merger of the two companies by Scheme of Arrangement, the final share exchange ratio has now been determined, enabling the merger to be completed. Niugini Mining's Net Cash, as defined in the Merger Implementation Agreement, was US$54.617 million. Based on the agreed Lihir share price of A$1.45 per share, being the price at which Lihir made its private placement with institutions on 7 October 1999 when the merger was announced, and the applicable exchange rate of A$/US$ 0.6371, the consideration for Niugini Mining's Net Cash will be 59.12 million Lihir shares. When added to the 1 for 1 consideration for Niugini Mining's holding of 161.53 million shares in Lihir, Lihir will issue a total of 220.65 million shares to Niugini Mining shareholders. Niugini Mining has 117.57 million shares on issue and accordingly Lihir will issue 1.8768 Lihir shares to Niugini Mining shareholders in exchange for each Niugini Mining share. Following completion of the merger, Lihir's issued share capital will comprise 1,142.33 million shares, excluding 161.53 million shares held by Niugini Mining, which is now a wholly-owned subsidiary of Lihir. Lihir will actively pursue the cancellation the Lihir shares held by Niugini Mining as soon as possible. The timetable for completing the merger is as follows: - Merger Record Date 8 February 2000 New Lihir Gold Shares traded on Deferred Settlement basis 10 February 2000 New Lihir Shares issued 14 February 2000 Holding Statements mailed 16 February 2000 New Lihir Shares traded on Non Deferred Settlement basis 17 February 2000 Niugini Mining shareholders may contact the Lihir Share registrar, Computershare Registry Services, for details of their new Lihir Shares on 61-7-3237-2100. For further information, please contact: Media Relations Investor Relations John Hughes Peter Jarvis Tel: +44 207 753 2331 Tel: +44 207 753 2401 Website: www.riotinto.com Note to Editors: Following the merger between Lihir Gold Limited and Niugini Mining Limited, Rio Tinto's holding in Lihir Gold Limited will become 16.3%.

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