Lions a premus smelter which xstrata seem pretty keen on. Heres one for the more studious.
http://www.pyrometallurgy.co.za/InfaconXI/011.pdf
And
http://www.xstrata.com/our-products/where-we-operate/
the growth projects drop down table has lion ii in execution and lion iii under unapproved but I guess its in their head at least.