Kongsberg Silver Mines
The silver mines of Kongsberg, in Buskerud county in Norway, constitute the largest mining field in Norway, with over 80 different mines. It was the largest pre-industrial working place in Norway, with over 4,000 workers at its peak in the 1770s and supplied over 10% of the gross national product of the Danish–Norwegian union during its 335-year-long history: over 450,000 man-years were expended in the production.
Economy of Norway
The state has large ownership positions in key industrial sectors, such as the strategic petroleum sector (Equinor), hydroelectric energy production (Statkraft), aluminum production (Norsk Hydro), the largest Norwegian bank (DNB) and telecommunication provider (Telenor). The government controls 31.6% of publicly listed companies. When non-listed companies are included the state has an even higher share in ownership (mainly from direct oil license ownership).