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.
Norway
The state has large ownership positions in key industrial sectors, such as the strategic petroleum sector (Statoil), hydroelectric energy production (Statkraft), aluminium production (Norsk Hydro), the largest Norwegian bank (DNB), and telecommunication provider (Telenor). Through these big companies, the government controls approximately 30% of the stock values at the Oslo Stock Exchange. When non-listed companies are included, the state has even higher share in ownership (mainly from direct oil licence ownership). Norway is a major shipping nation and has the world's 6th largest merchant fleet, with 1,412 Norwegian-owned merchant vessels.