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.
Longyearbyen
The only mining still taking place in Longyearbyen is at Mine 7, located up Adventdalen. It produces of coal annually, of which is used to fuel Longyear Power Station, Norway's only coal-fueled power station. Most of Store Norske's production is done at Sveagruva, located on Van Mijenfjorden, south of Longyearbyen. No roads connect the communities; instead, workers live in dormitories in Svea. Seventy percent commute home to the mainland while thirty percent commute to Longyearbyen. Mining has not been profitable and Store Norske relies on state subsidies to retain production.