The Antamina mine is a large copper and zinc mine, loed in the Andes mountain range, 270 kilometres north of Lima, Peru. The deposit is loed at an average elevation of 4,200 metres. We have a 22.5% interest in the mine. Our partners are BHP Billiton plc (33.75%), Glencore plc (33.75%) and Mitsubishi Corporation (10%).. The mine is an open pit, truck/shovel operation.