Selected papers: The ABB dry ash concept: INRECTM (A. Selinger, V. Schmidt). Evaluation of treatment of gas cleaning from MSWI with chemical agents (S. Mizutani et al.). Recycling for road improvement (Ch. J. Nemmers). Quarries reinforcement with stabilised bottom ashes (A. Bouchelaghem et al.). Study of cement-based mortars containing Spanish ground sewage sludge ash (J. Monzo et al.). Fly ash -- useful material for preventing concrete corrosion (S. Mileti et al.). Low lime binders based on fluidized bed ash (J. Drottner, J. Havlica). The use of MSWI bottom ash in hollow construction materials (E. Jansegers). Using chemfronts, a geochemical transport program, to simulate leaching from waste materials (C. Bäverman et al.). The application of incinerator bottom ash in road construction (K.A. Phil). Utilisation of flue gas desulphurisation by-products in the cellular concrete technology (W. Brylicki, A. Lagosz). Influence of the Ca content on the coal fly ash features in some innovative applications (P. Catalfamo et al.). Investigation strategies for contaminated soils in Finland (H.L. Järvinen). Quality assurance in the laboratory analysis of contaminated soils (L. Heasman).