Organizing committee and list of sponsors. Foreword. List of  contributors. Hydrometallurgy and Sustainable Development: EU  R&D activity and strategy for sustainable development in the mineral  industries; A. Adjemian. Hydrometallurgy - an environmentally  sustainable technology? M.T. Anthony, D. S. Flett. Environmental  impact of increasing production of gold from hydrothermal resources;  A.K. Haines. In-situ leaching recovery of copper: what's next?  J.B. Hiskey. Hydrometallurgical processing of refinery  slimes at Phelps Dodge: theory to practice; J.E. Hoffmann, B.  Wesstrom. Materials production and the environment; R.C. Villas  Bôas. Fundamentals: Reaction of galena in ferric  sulphate-sulphuric acid media; J.E. Dutrizac, T.T. Chen.  Multicomponent equilibrium calculations in process design: study of  some acid digester reactors; P. Koukkari, H. Sippola, A.  Sundquist. Hematite solubility in sulphate process solutions;  V.G. Papangelakis, B.C. Blakey, H. Liao. Hydrothermal  precipitation from aqueous solutions containing iron(III), arsenate  and sulphate; P.M. Swash, A.J. Monhemius. Leaching: Heap  leaching of poor nickel laterites by sulphuric acid at ambient  temperature; S. Agatzini-Leonardou, D. Dimaki.  Mechano-chemical treatment of tetrahedrite as a new non-polluting  method of metals recovery; P. Baláz, et al.  Non-traditional methods of treating high-silicon ores containing rare  elements; S.V. Chizhevskaya, et al. Scope and limitations for  application of selectivity in oxidation potential-controlled leaching  of metal sulphides; N.L. Piret, J.F. Castle. Control of  arsenic and selenium during nickel matte leaching; J.J. Robinson,  K. Barbetti, R.P. Das. Electrochemical study of oxidative  dissolution of syntheticviolarite in aqueous media; T.E.  Wamer, N.M. Rice, N. Taylor. Bioprocessing: Stability of  arsenical bacterial oxidation products; K. Adam, et al. Removal  of iron from kaolin and quartz: dissolution with organic adds; C.F.  Bonney. Bioreduction of gold on algae and with amtino acids;  A.R. Gee, A.W.L. Dudeney. Metal speciation in bioleach  solutions during bacterial dissolution of a complex mineral sulphide  concentrate; M.A. Jordan, C.V. Phillips, D.W. Barr.  Bacterial oxidation of an auriferous arsenical concentrate; C.  Komnitsas, F.D. Pooley. Oxidation of arsenopyrite in bacterial  ferric solutions; C. Komnitsas, F.D. Pooley. Effect of silver  and bismuth on bioleaching of copper sulphide concentrates with  thermophilic microorganisms; J.L. Mier, et al. Dissolved iron  equilibrium in bacterial leaching systems; J.V. Wiertz, I.  Godoy Ríos, B. Escobar Miguel. Influence of substrate  polarization on activity of Thiobacillus ferrooxidans in  bioleaching; J.V. Wiertz, et al. Gold: Pretreatment by  electrolytic or oxidative leaching for recovery of gold and silver  from refractory sulphide concentrates; L.M. Abrantes, M.C. Costa,  A.P. Paiva. Iodide-thiocynate leaching system for gold; O.  Barbosa-Filho, A.J. Monhemius. Leaching and recovery of gold by use  of acidothioureation on copper-mine wastes: laboratory and pilot-plant  tests and process modelling; P.F. Kavanagh, et al. PRISMA  - a hydrometallurgical process simulator: application in gold  extraction from refractory pyrites; A. Kontopoulos, et al.  Interrelationship between lixiviants and galvanic interaction during  dissolution of gold; L. Lorenzen, J.S.J. van Deventer, M.T.  van Meersbergen. Comparative performance of porous adsorbents in  presence of gold cyan