International smelting technology symposium (Incorporating the 6th Advances in Sulfide Smelting Symposium) ; Proceedings of a symposium sponsored by The Metallurgy and Materials Society of CIM and the Pyrometallurgy Committee of the Extraction and Processing Division of TMS (The Minerals, Metals & Materials Society) : held during the TMS 2012 annual meeting & exhibition, Orlando, Florida, USA, March 11-15, 2012 /