A mining truck of the National Radioactive Waste Depository moves in the main tunnel of the Bataapati low and intermediate level waste depository in southern Hungary, in advance of its official opening this month. Checks of groundwater levels are important to the final preparations of the two access tunnels and the vault, which was excavated by drill and blast in fractured granite with low infiltration approximately 250m below ground level and lined with sprayed concrete, ribs and bolts. The depository will take drums of waste from the operation and decommissioning of the Paks power plant, pack them over with concrete and then backfill the drifts with a mixture of granite and bentonite.