It was in Visnes that the copper vein that provided material for the Statue of Liberty was found. The copper at this site was first discovered in 1865. Visnes was the site of one of the most active of the Norwegian copper mines. During the 1870s, it was the largest copper mine in Norway. Up to 70% of Norway's copper export came from Visnes, which at that time was one of northern Europe's largest mines. This mine was in full operation throughout much of the latter half of the 19th century and was not fully closed until 1972. The copper mine has its own museum, Visnes Gruvemuseum.
- "Vigsnes Mining Field". Olavsrosa.no. 2007-07-28. Retrieved 2012-03-19.
- "Discovery of Copper at Visnes in Norway (Visnes Copper Mines)". Park.org. Retrieved 2012-03-19.
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