Sale of Pinto Valley BHP Billiton NEWS RELEASE Release Time IMMEDIATE Date 29 April 2013 Number 11/13 SALE OF PINTO VALLEY BHP Billiton has signed a definitive agreement to sell its Pinto Valley mining operation (Pinto Valley) and the associated San Manuel Arizona Railroad Company (SMARRCO) to Capstone Mining Corp. (Capstone) for an aggregate cash consideration of US$650 million. The transaction is subject to regulatory approval, and other customary conditions, and is expected to be completed in the second half of the 2013 calendar year. Under the terms of the agreement, Capstone will assume the business’s environmental liabilities. BHP Billiton employees working at Pinto Valley and SMARRCO will become employees of Capstone as part of the transaction. BHP Billiton President Copper, Peter Beaven, said: “The sale of Pinto Valley is an excellent outcome for BHP Billiton shareholders. It is consistent with our strategy and it takes the transaction value of divestments announced over the last 12 months to US$5.0 billion. We are pleased to have reached agreement with Capstone, particularly given their commitment to maintain our environmental and safety standards." Further information on BHP Billiton can be found at: www.bhpbilliton.com. About Pinto Valley and SMARRCO BHP Billiton currently has a 100% ownership interest in both Pinto Valley and SMARRCO. Pinto Valley is an open-pit copper mining operation located east of Phoenix in the Globe- Miami district of Arizona. SMARRCO owns and operates a 47 km railway from San Manuel to Hayden, Arizona. Media Relations Investor Relations Australia Australia Gabrielle Notley James Agar Tel: +61 3 9609 3830 Mobile: +61 477 325 803 Tel: +61 3 9609 2222 Mobile: +61 467 807 064 email: Gabrielle.Notley@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: +61 402 087 354 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 Jennifer White email: Brendan.Harris@bhpbilliton.com Tel: +44 20 7802 7462 Mobile: +44 7827 253 764 email: Jennifer.White@bhpbilliton.com Matt Chism Tel: +1 71 359 96158 Mobile: +1 281 782 2238 email: Matt.E.Chism@bhpbilliton.com Americas Jaryl Strong Tel: +1 713 499 5548 Mobile: +1 281 222 6627 email: Jaryl.Strong@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 Sponsor: Absa Capital (the investment banking division of Absa Bank Limited, affiliated with Barclays) Date: 29/04/2013 07:05:00 Produced by the JSE SENS Department. The SENS service is an information dissemination service administered by the JSE Limited ('JSE'). The JSE does not, whether expressly, tacitly or implicitly, represent, warrant or in any way guarantee the truth, accuracy or completeness of the information published on SENS. The JSE, their officers, employees and agents accept no liability for (or in respect of) any direct, indirect, incidental or consequential loss or damage of any kind or nature, howsoever arising, from the use of SENS or the use of, or reliance on, information disseminated through SENS.