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Sangaredi Refinery Project Briefing Paper

Number 14/07

BHP Billiton today announced the acquisition of a 33.3 per cent interest in Global Alumina’s Sangaredi Refinery Project in Guinea, West Africa, for a consideration of US$140 million.

The project comprises the design, construction and operation of a 3Mtpa alumina refinery, 9Mtpa bauxite mine, and associated infrastructure. A mining concession covering 690km² has been secured and a mineral resource of 233 million tonnes bauxite (@ 39% Available Alumina and 1% Reactive Silica) has been reported. This is considered sufficient to support the development, but further exploration work is underway to increase the resource size.

The proposed refinery site is approximately 100km inland from Kamsar and has the benefit of access to existing rail infrastructure linking it to the Port of Kamsar, where dedicated facilities are already under construction.

"This project provides the Joint Venture partners with access to a long life, low cost, world class resource base and represents an excellent opportunity for BHP Billiton to continue to grow its business in a value accretive manner" commented Graeme Hunt, President Aluminium for BHP Billiton.

"In view of BHP Billiton’s other exploration interests in Guinea, this project also offers us valuable experience of operating in this first tier minerals province," he added.

As part of the agreement, BHP Billiton will appoint the Chief Executive Officer and Chief Financial Officer of the Joint Venture Company (JVC) and will enter into a services agreement with the JVC for the development, construction and operation of the project, which will be operated in accordance with BHP Billiton standards.

Global Alumina will now hold a 33.3 per cent equity interest in the Sangaredi Refinery Project, Dubai Aluminium Company Limited a 25 per cent interest and Mubadala Development Company PJSC 8.3 per cent.

I, Dominique Louis Butty, a director of Butty Herinckx & Partners geological and mining consultants, am a member of the European Federation of Geologists and have sufficient experience which is relevant to the Sangaredi Refinery Project style of mineralisation and type of deposit and to the estimation of Mineral Resources and Ore Reserves to qualify as a Competent Person as defined in the 2004 Edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves'. I, Dominique Louis Butty consent to the inclusion of the Sangaredi Refinery Project Mineral Resources in the BHP Billiton Global Alumina press release, in the form and context in which it appears.

For further information please contact:

Samantha Evans, Media Relations
Tel: +61 3 9609 2898  Mobile: +61 400 693 915

Jane Belcher, Investor Relations
Tel: +61 3 9609 3952  Mobile: +61 417 031 653

United Kingdom
Mark Lidiard, Investor & Media Relations
Tel: +44 20 7802 4156  Mobile: +44 7769 934 942

Illtud Harri, Media Relations
Tel: +44 20 7802 4195  Mobile: +44 7920 237 246

United States
Tracey Whitehead, Investor & Media Relations
Tel: US +1 713 599 6100 or UK +44 20 7802 4031
Mobile: +44 7917 648 093

South Africa 
Alison Gilbert, Investor Relations
Tel: SA +27 11 376 2121 or UK +44 20 7802 4183
Mobile: +44 7769 936 227


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