The Geological Survey of Norway (NGU), based in Trondheim, is the central national institution for knowledge of the bedrock, mineral resources, surface deposits and groundwater of mainland Norway and of the near-surface geology of the Norwegian continental shelf. The Survey's tasks include geological, geophysical and geochemical mapping, development and maintenance of databases, research, information activities and advice to governmental bodies and industry. The NGU staff of 225 includes representatives of 24 nationalities and 65% of the staff are scientists.