zn market charts

Here are some interesting graphs from a recent Boliden preso, sourced from Brook hunt.

http://vp134.alertir.com/sites/default/files/event/boliden_cmd_2011_group_update_lennart_evrell.pdf

Overland's pittable deposit supposedly also has good metallurgy and metals recovery going for it that should see it in production with a low relative cost, not that you would know that by looking at the chart the Paradigm investors have painstakingly been 'drawing' for us..

I have been scratching around to little avail for a recent graph of Zn (or other BM) industry C1 cost and capex growth, which I am sure must be rising faster than in the past due to monetary inflation.

Can anyone point me to one?