Section headings and selected papers: Preface. Organizing committee. Copper Tankhouse Practice. The Kidd copper refinery, J Laezza et al. Tankhouse modernization at CCR, J Thiriar et al. Mechanization of Inco's copper cliff copper refinery tankhouse, A L Cruthers & E W Hodkin. The design and engineering of copper electrowinning tankhouses, J A Wells & W R Snelgrove. New Developments. Influence of the main parameters on zinc powder electrowinning in caustic soda medium, J Frenay et al. Recent improvements in zinc alkaline hydrometallurgy, D L Piron. Pilot plant studies for the production of electrolytic manganese dioxide and manganese metal, P L Sen Gupta. Fluidized-bed electrodeposition of heavy non-ferrous metals, S L Tsapakah & L V Volkov. Purification and Electrolysis. Effect of organic additives on the kinetics of cobalt purification, G Houlachi et al. Removal of cobalt and manganese from zinc sulphate solutions, J C Fonseca. The production of particulate manganese dioxide during zinc electrowinning, J M S Rodrigues & M J Dry. Operating practice and technical developments in nickel refining and cobalt recovery at Jinchuan non-ferrous metal company, Yang Yuhua & Meng Xianxuan. Modernization, Automation, and Monitoring. Advances in copper tankhouse automation, J Bosscher & W Berends. New cell house operation at CEZ, M J Agnew & G Monteith. Inco copper refinery addition agent monitoring using cyclic voltammetry, B R Conard et al. Morphology modifier monitoring by polarization measurement, R E Alford. Monitoring of organic additives in electrolyte at Cominco's lead/zinc operations, R C Kerby & W A Jankola. Authors index.