This is an amazingly bullish outlook for copper. It states that declining ore grades are impacting production at these enormous chilean copper mines. They rank 1,2 and 4 in the world and we don't even need to mention the problems at the number 3. I hope they are correct. The full article is well worth a read

'The start of this year has seen an acceleration of the trend: Chilean copper production was down nearly 8 per cent year on year in January, and by about 20 per cent from December.

That is a shockingly large number. To put it in context: the drop in Chilean production in January is equivalent in terms of its impact on the copper supply-demand equation to a 5 percentage point acceleration in Chinese consumption growth'

Full article

http://www.ft.com/intl/cms/s/0/311b2a3e-6e77-11e1-a82d-00144feab49a.html#axzz1pCluTGTI