[en] This is an autonomous OECD/NEA project relating to the final disposal of highly radioactive waste. Research is being performed in a granite formation 350 m below the ground surface. The first phase consists of three parts, namely hydrogeological and hydrogeochemical investigations in boreholes, tracer migration tests and large-scale tests of the behaviour of backfill material. The second phase includes the following investigations: detection and characterization of fracture zones, sealing of boreholes and shafts, hydrogoelogical characterization of the Stripa site and isotopic characterization of its groundwaters. The estimated cost of both phases is 111 MSEK and they are scheduled for completion in 1986. A summary of the progress of the project phase I and phase II is given in this report. (G.B.)