2012 Half Year Results Presentation - Antofagasta plc

Operations and projectsLos Pelambres• Open pit operation located in Chile’s Coquimbo Region, producingcopper and molybdenum concentrates since 2000• 2012 HY production and costso Copper – 197,200 tonneso Molybdenum – 6,500 tonneso Net cash costs 77.3 c/lb – pre-credit costs 137.2 c/lb• 2012 FY forecast production and costso Copper – 390,000 tonneso Molybdenum – 11,000 tonneso Net cash costs 90.0 c/lb – pre-credit costs 140 c/lb• Significant resource base could further enhance mine plan in thefuture40