The board of Peruvian copper-zinc producer Minera Antamina has approved a US$1.29bn expansion project, the mine’s owners announced Tuesday. London-listed BHP Billiton and Xstrata and Canada’s Teck separately reported the plan to go ahead with a 38% increase in the processing rate to 130,000t/d. The multinationals own 33.75%, 33.75% and 22.5%, respectively of Antamina. The remaining 10% is held by Japan’s Mitsubishi.
There has been strong local opposition to the expansion.