The Oyu Tolgoi mine in Mongolia just came on line and shipped the first batch of copper a week or so ago. It is the second largest copper deposit ever found. Currently most of it will be going to China, but I’m sure the mine’s majority owner, Rio Tinto, would be happy to sell to others. So I think any calculations/speculations about copper need to take this new mine into account.
And…as a matter of fact, the link to this article just showed up on my FB feed: http://www.mad-mongolia.com/news/mongolia-news/huge-mongolia-copper-mine-begins-shipments-rio-tinto-14682/