Sale of Diamonds Business BHP Billiton NEWS RELEASE Release Time IMMEDIATE Date 13 November 2012 Number 27/12 SALE OF DIAMONDS BUSINESS BHP Billiton has signed definitive agreements to sell its diamonds business, comprising its interests in the EKATI Diamond Mine and Diamonds Marketing operations, to Harry Winston Diamond Mines Ltd. (Harry Winston) for an aggregate cash consideration of US$500 million. The transactions are subject to regulatory approval and other customary conditions. Completion is expected in the first quarter of calendar year 2013. Under the terms of the agreements, Harry Winston will assume all of BHP Billiton’s obligations under EKATI’s Environmental Agreement with the Government of Canada and the Northwest Territories, Socio-Economic Agreement with the Government of the Northwest Territories, Impact and Benefit Agreements with Aboriginal Groups and pension liabilities linked to the mine’s defined benefit scheme. Harry Winston is also committed to maintaining EKATI’s environmental standards and will continue to work with local businesses and communities in the Canadian North. All BHP Billiton employees working at EKATI, in Yellowknife and in Diamonds Marketing in Antwerp will become employees of Harry Winston as part of the transaction. BHP Billiton Diamonds & Specialty Products President Tim Cutt said: “We are very proud of EKATI’s track record and the substantial value it has created for the region and our shareholders. The mine’s success is a credit to the people who work there, at Yellowknife and with the marketing team in Antwerp. Harry Winston has long experience in the Canadian diamond industry and their commitment to study further development at EKATI could help extend the mine’s contribution to Northern Canada for many years to come.” BHP Billiton Chief Executive Non-Ferrous Andrew Mackenzie said: “The divestment of EKATI is consistent with our focus on large, long-life, low-cost, expandable, upstream assets and, together with the recent sale of our interests in Richards Bay Minerals and Yeelirrie, reflects our ongoing pursuit of a simpler business.” The EKATI joint venture parties holding the minority interests in the EKATI mine hold pre- emptive rights to purchase BHP Billiton's interests and have 60 days from the date they are provided with notice to exercise such rights. Harry Winston's agreements to purchase BHP Billiton's EKATI interests are subject to the expiration or waiver of these pre-emptive rights and other customary regulatory and closing conditions. The divestment of EKATI will result in an impairment of approximately US$200 million (post tax) to the carrying value of the asset which will be reflected as an exceptional item in BHP Billiton’s financial results. About EKATI EKATI is located 310 kilometres northeast of Yellowknife and 200 kilometres south of the Arctic Circle. It was Canada’s first diamond mine. BHP Billiton’s interest in EKATI consists of an 80 per cent interest in the Core Zone Joint Venture, comprising existing operations and a 58.8 per cent interest in the Buffer Zone Joint Venture, primarily focusing on exploration targets. Further information on BHP Billiton can be found at: www.bhpbilliton.com. Sponsor: Absa Capital (the investment banking division of Absa Bank Limited, affiliated with Barclays) Media Relations Investor Relations Australia Australia Antonios Papaspiropoulos James Agar Tel: +61 3 9609 3830 Mobile: +61 477 325 803 Tel: +61 3 9609 2222 Mobile: +61 467 807 064 email: Antonios.Papaspiropoulos@bhpbilliton.com email: James.Agar@bhpbilliton.com Fiona Hadley Andrew Gunn Tel: +61 3 9609 2211 Mobile: +61 427 777 908 Tel: +61 3 9609 3575 Mobile: +61 439 558 454 email: Fiona.Hadley@bhpbilliton.com email: Andrew.Gunn@bhpbilliton.com Eleanor Nichols United Kingdom and South Africa Tel: +61 3 9609 2360 Mobile: +61 407 064 748 email: Eleanor.Nichols@bhpbilliton.com Tara Dines Tel : +44 20 7802 7113 Mobile : +44 7825 342 232 United Kingdom Email : Tara.Dines@bhpbilliton.com Ruban Yogarajah Americas Tel: +44 20 7802 4033 Mobile: +44 7827 082 022 email: Ruban.Yogarajah@bhpbilliton.com Brendan Harris Tel: +44 20 7802 4131 Mobile: +44 7990 527 726 Americas email: Brendan.Harris@bhpbilliton.com Jaryl Strong Matt Chism Tel: +1 713 499 5548 Mobile: +1 281 222 6627 Tel: +1 71 359 96158 Mobile: +1 281 782 2238 email: Jaryl.Strong@bhpbilliton.com email: Matt.E.Chism@bhpbilliton.com BHP Billiton Limited ABN 49 004 028 077 BHP Billiton Plc Registration number 3196209 Registered in Australia Registered in England and Wales Registered Office: 180 Lonsdale Street Registered Office: Neathouse Place Melbourne Victoria 3000 Australia London SW1V 1BH United Kingdom Tel +61 1300 55 4757 Fax +61 3 9609 3015 Tel +44 20 7802 4000 Fax +44 20 7802 4111 Members of the BHP Billiton Group which is headquartered in Australia Date: 13/11/2012 04:16:00 Produced by the JSE SENS Department. 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