Bergslagernas Järnvägar was the largest private railway company of Sweden with a main line from Gothenburg to Falun, in all 478 km. Bergslagernas Järnvägar (BJ) was founded in the 1870s to form a transportation system from Bergslagen, the ore-rich areas in southern Sweden to the port in Gothenburg. It was nationalized and merged into Swedish State Railways in 1948.