Fundamentals.- Hydrophobic Agglomeration of Fine Particles.- Electrokinetic Behaviour of Sulphide Minerals: A Contribution to the Chemistry of Flotation.- Bacterial Leaching of Minerals.- Legal Framework for Environmental Protection in Mineral Processing Activities.- Environmental pollution and prevention.- Air-Pollutant Emissions and Imissions from Metallurgical Industry.- Electrochemical Approach to Pollutants Removal and Destruction.- Electrohydrometallurgical Recovery of Cadmium and Nickel from Spent Batteries.- The Treatment of Radioactive Liquid Wastes and the Problems Connected with the Long Term Storage of Radioelements.- Removal and Recovery of Metals from Dilute Solutions: Applications of Flotation Techniques.- Separation processes.- Desulphurization of Coal to Protect the Environment.- Extraction of Priority Pollutants Using Inorganic Ion Exchangers.- Arsenic Removal from Effluents of Copper Plants.- Hydrometallurgy of Precious Metals: Effects on the Environment.- New Developments in the Processing of Chromite Tailings.- Innovative techniques.- Recycling of Plastics: Application of Flotation.- Mineral Processing Technology Applied to the Remediation of Contaminated Soils.- Electroflotation in Waste Water Treatment: Results and Perspectives.- The Biosorption Process: An Innovation in Reclamation of Toxic Metals.- List of Contributors.- List of Participants.