 However, financial problems made Hellefors forced to be taken over by the government, and the industries in Fredriksberg became state owned.During the 1930s and '40s the factories returned to private ownership and were transformed into a full scale paper mill.As a result of the Swedish neutrality in World War II and the following lack of foreign competition and the Swedish economic boom during the 1940s and '50s the paper mill in Fredriksberg got a stronger economic position.