It also revised its guidance for 2015 down, saying sales and revenues for the year are now expected to be about $48 billion—$1 billion lower than the previous outlook.
So far, copper prices have failed to react significantly to news of supply disruptions, remaining more responsive to news from China, the world’s largest consumer.
Development of the mine, halted by politics and weak government institutions, reflects the resource curse as Mongolia’s Parliament failed to transfer ownership of the coal mine.