Norsk Jernverk is a former Norwegian industrial company which was founded in 1946 in Mo i Rana

Mo i Rana

Mo i Rana is a town in the municipality of Rana, Nordland, Norway, located just south of the Arctic Circle and in the region Helgeland. The town is called "Mo i Rana" to distinquish it from other places named Mo - most notably the town of Mosjøen, also in Helgeland - though locally the town is...

, fully owned by the State of Norway. The production started in 1955. In 1985 it acquired the steel company Christiania Spigerverk

Christiania Spigerverk

Christiania Spigerverk is a steel company which was founded in Oslo in 1853, and developed into one of the largest industrial companies in Norway. In 1972 Christiania Spigerverk fusioned with Elkem. It was sold to Norsk Jernverk in 1985, and again split out as a separate company in 1993....

, which was later again sold out as a separate company. Norsk Jernverk was later renamed Norsk Jern Holding, which was made into a private company in the 1990s, and was later taken over by the Finnish company Rautaruukki

Rautaruukki

Rautaruukki Corporation is a Finnish company, headquartered in Helsinki, which manufactures and supplies metal-based components and systems to the construction and engineering industries....

.