Within the framework of the project "Development of a waste prevention and recycling strategy for the Austrian Federal Waste Management Plan 2006", a certain information deficit has been identified with regard to waste prevention and waste recycling options for the waste streams "ashes, slags, dusts". Also, an examination of Ńashes, slags, dustsń was prompted by the requirement of the Landfill Directive for carbon-rich wastes (like the light fraction from the automotive shredder) to be treated before landfilled, as well as by the fact that new waste incineration plants went into operation and the quantity of incineration residues increased. In order to provide the technical expertise for the development of a waste prevention and recycling strategy, the present report has been produced, which examines the avoidance of wastes and/or the reduction of hazardous substances in wastes and, where necessary, the further treatment of wastes in the following plants: .. waste incineration plants (i. e. municipal solid waste incineration plants), .. combustion plants where wastes are co-incinerated, .. power plants and biomass combustion plants, .. plants for metal production (iron and steel and non ferrous metals), .. cement plants.