58 36 25 37 20 24 18 6 12 8 17 23

27 10 16 66 15 26 29 11 28 38 34 13

Carbon Steel Materials 35 64 70 44 Ref Country Site/Asset Description Ownership 51 GEMCO Producer of manganese 60% 21 52 Australia Illawarra Three underground coal mines 100% Offices Coal 41 40 53 Australia Queensland World’s largest supplier of 50–80% 14 Coal high-quality metallurgical coal for Petroleum 50 steel production 19 54 Australia TEMCO Producer of manganese alloys ● 60% Aluminium 51 55 Australia WA Ore Pilbara iron ore mine, rail and port 85–100% 47 operations Base 56 33 68 49 7 31 45 56 Brazil An efficient low-cost producer of iron 50% 55 53 63 ore pellets Carbon Steel Materials 48 22 65 42 59 2 57 South Africa Samancor Integrated producer of manganese ore 60% 57 43 and Specialty Products 60 67 46 61 Manganese (Hotazel Manganese Mines) and alloys 5 69 62 4 (Metalloys) Energy Coal 39 1 52 9 33 Materials 32 30 54 Diamonds and Specialty Products

Ref Country Site/Asset Description Ownership 58 Canada EKATI Mine in the 80% of Canada 59 Mozambique Corridor Sands Titanium minerals project 90% 60 South Africa Richards Bay World’s largest producer of titanium slag 50% BHP Billiton locations Minerals

Offices Petroleum Aluminium Energy Coal

Ref Country Location Ref Country Site/Asset Description Ownership Ref Country Site/Asset Description Ownership Ref Country Site/Asset Description Ownership ♦ Corporate Centres 1 Australia Adelaide ♦ ● 28 Algeria Ohanet Joint operator with Sonatrach 45% 39 Australia Worsley Integrated alumina refinery/ 86% 61 Australia Hunter Valley Mt Arthur Coal 100% ● Marketing Offices ● ▲ of wet gas development bauxite mine Energy Coal 2 Australia Brisbane ▲ Minerals Exploration 29 Algeria ROD Integrated Onshore oil development 36.04% 40 Brazil Alumar Alumina refinery and aluminium 36–40% 62 Australia Illawarra Coal Marketing agent for energy coal output – 3 Australia Melbourne Offices ♦ ● ▲ Development smelter (Global Headquarters) ■ Technology Centres 63 Australia Queensland Coal Marketing agent for energy coal output – 4 Australia Newcastle ■ 30 Australia Bass Strait The Bass Strait operations produce oil, 50% 41 Brazil MRN Bauxite mine 14.8% 64 Colombia Cerrejon Largest coal producer in Colombia 33.3% condensate, LPG, natural gas and ethane 5 Australia ♦ ● ▲ ■ 42 Mozambique Mozal Aluminium smelter 47.1% 65 South Africa Ingwe Largest coal producer in South Africa 100% 31 Australia Griffin Operator of oil and gas project offshore WA 45% 6 Belgium Antwerp ● 43 South Africa Hillside/Bayside Two aluminium smelters 100% 66 US New Mexico Mine-mouth operations 100% 32 Australia Minerva Operator of Minerva gas field 90% 44 Suriname Paranam Alumina refinery and bauxite mines 45% Coal 7 Brazil Rio de Janeiro ● ▲ development in the Otway Basin 8 Canada Vancouver ▲ 33 Australia North West One of Australia’s largest 8.33–16.67% 9 Chile Santiago ♦ ● ▲ Shelf resource projects, producing liquids, LNG and domestic gas 10 China Beijing ● ▲ 34 Pakistan Zamzama Operator of onshore gas development 38.5% 11 China Shanghai ● Base Metals Stainless Steel Materials ● 35 Trinidad Angostura Operator of oil field 45% 12 Germany Essen and Tobago ● ▲ 13 India New Delhi 36 UK Bruce/Keith Oil and gas production in the 16–31.83% Ref Country Site/Asset Description Ownership Ref Country Site/Asset Description Ownership 14 Indonesia Jakarta ● UK North Sea 45 Australia Cannington Silver, lead and zinc mine in 100% 67 Australia West Nickel assets including Mt Keith and 100% 15 Japan Tokyo ● 37 UK Liverpool Bay Operator of oil and gas development 46.1% north-west Queensland Leinster operations, Kalgoorlie nickel smelter and concentrator and Kwinana 16 Korea Seoul ● in the Irish Sea 46 Australia Olympic Dam Large underground /uranium 100% mine in South Australia nickel refinery 17 Mongolia Ulaanbaatar ▲ 38 US Gulf of Mexico Interests in several producing assets, 4.95–100% the Atlantis, Neptune and Shenzi 47 Chile Cerro Colorado Copper mine in northern Chile, 100% 68 Australia QNI Yabulu The Yabulu refinery is one of the world’s 100% 18 Netherlands The Hague ● developments, and a significant producing cathode copper through Refinery major laterite nickel- processing plants 19 Peru Lima ▲ exploration acreage position a SX-EW leach operation 69 Australia Ravensthorpe Ravensthorpe and processing 100% Nickel Project facility (currently in development) 20 Russia Moscow ● ▲ – Various Exploration Exploration interests in Algeria, Australia, – 48 Chile Escondida The world’s largest copper 57.5% Brunei, Maritime Canada, Colombia, mine, located in northern Chile 70 Colombia Cerro Matoso Integrated ferronickel and 99.8% 21 Singapore Singapore ● Namibia, Pakistan, South Africa, Trinidad 49 Chile Spence Open cut copper mine under development 100% smelting complex in north Colombia 22 South Africa Johannesburg ♦ ● ▲ ■ and Tobago, UK, US 50 Peru Antamina Large copper-zinc mine 33.75% 23 Switzerland Baar ● 24 UK London ♦ 25 UK Sheffield ● 26 US Houston ♦ ● 27 US Pittsburgh ●

20 ▲ BHP BILLITON SUSTAINABILITY SUMMARY REPORT 2006