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.
Solør Line
The density of forest in Hedmark along both the Solør and Røros Lines is amongst the most productive in the country, and these lines see an unprecedented amount of lumber trains compared to elsewhere in the country. Norsenga Lumber Terminal has an annual loading of 536,546 tonnes of lumber in 2013, making it the busiest such terminal in Norway. It was followed by Vestmo, with 470,292 tonnes. Braskereidsfoss is the fifth-busiest, with 66,863 tonnes. Train operators include Hector Rail, TX Logistik and Tågåkeriet i Bergslagen. The largest customer is Stora Enso, which mostly imports the lumber for use at its plant in Karlstad, Sweden. Lesser quantities are transported to Gävle and Sundsvall.