1. Introduction. Scope and approach. Advantages in storing waste products at depth in rock. General principles of waste disposal. Long-term function. Example of planning and design of a repository - the Forsmark case. References. 2. Location of Repositories. Major factors. Rock structure. Factors influencing the location of repositories. References. 3. Design of Repositories. Introduction. Major components to be considered in the design. Design concepts. Waste containers. Embedment of containment. The nearfield rock. Repository sealing. 4. Construction. Introduction. Rock excavation techniques and their disturbing effect on the rock. Buffers and backfills. Disposal in deep shafts. Disposal in very deep boreholes - the VDH concept. Special techniques for use in mines. Seals. References. 5. Performance Assessment. Introduction. Normal conditions. Exceptional conditions. Conclusions concerning performance assessment. 6. Disposal of Radioactive Waste. Introduction. Influence of g radiation on canister-embedding clay buffers. Influence of a radiation on canister-embedding clay buffer. Performance. References. 7. Quality Assurance. What needs to be tested and which are the requirements? The host rock. Buffers and backfills. References. 8. Instrumentation and Recording. General. Rock displacements. Temperature recording. Pressure recording. References. 9. Economy. Factors. HLW repositories. Repositories for hazardous chemical waste. References.