BHP Billiton Group’s copper mine at Escondida, Chile – the world’s largest – is pictured in this undated company photo. Chile and Peru, the combined source of more than a third of the world’s copper, may impose new fees on mining companies such as Billiton, retreating from a low-tax policy designed to spur investment. Source: BHP Billiton Group/via Bloomberg News. BHP TALKS
MINERIA – COBRE – MINA LA ESCONDIDA – VISTA PANORAMICA – YACIMIENTO – ANTOFAGASTA – CHILE