In Austria, the first basic technological and economic examinations of bulk-waste landfills with the purpose to recover secondary raw materials have been carried out by the 'LAMIS - Landfill Mining Österreich' pilot project. A main focus of its research, and the subject of this PhD, was the first conceptual design of a holistic assessment process for landfill mining plans, including not only monetary factors (like costs and proceeds) but also non-monetary ones, like concerns of adjoining owners or environmental impact. Detailed reviews of references, the identification of influences and system boundaries to be included in planning landfill mining, several expert workshops and talks with landfill operators have been performed followed by a division of the whole assessment process into preliminary and main assessment. Preliminary assessment is carried out with standardized questions to rate juridical feasibility, the risk and the expenditure of an landfill mining project. The results of this preliminary assessment are compiled in a portfolio chart that is used to recommend or not to recommend further assessment. If a detailed main assessment is recommended, defined economic criteria are rated by net present value calculations while ecological and socioeconomic criteria are examined in a utility analysis and then transferred into a utility-net present value chart. If this chart does not support making a definite statement on the feasibility of the project, the results must be further examined in a cost-effectiveness analysis. Here, the benefit of the particular landfill mining project per capital unit (utility-net present value ratio) is determined to make a final distinct statement on the general benefit of an landfill mining project.