worth a read, page-58

Perfectly illustrates my point with base numbers of $12kg production costs and $20kg sale costs if they can find someone in Laos or Vietnam to take all that Y.

Note concentrate production cost $12kg and Y concentrate sale value $9kg and that's from the lower cost open pit mining. The economics obviously get worse with higher cost underground mining.

Now these figures are just taken from one article, and while potentially the Dy is a fantastic resource, there has to be a few queries on the economics of a 60%+ Y concentrate, particularly as we're speculating on REO concentrate prices post 2015.

That's not a downramp, why would you even bother at current prices, but rather an open query on what will drive the SP from these levels.