Underground space utilisation -- Project planning and implementation -- Safety and other operational issues -- Structural health assessment and tunnel refurbishment -- Methods and basic aspects of design and analysis -- Design case studies -- Seismic design and experiences -- TBM performance and wear -- Developments in the technology of mechanized tunnelling -- Developments in monitoring technology -- Developments in concrete and shotcrete linings technology -- Other construction technology developments -- Alptransit tunnels -- Underground construction for hydropower -- Other hydraulic tunnels -- Cases with particularly demanding geological conditions -- Other construction case histories.