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.
Aitik
The Aitik copper mine is owned by Boliden AB and situated outside the town of Gällivare in northern Sweden. It is one of Europe's largest open pit copper mines. Associated with the copper, some quantities of gold, silver are produced alongside the main production.