 In 1938, 20 families lived in the workers' quarters, who were "Gastarbeiter" from Kirchen, 50 miles to the south east where the Jung family had their first mill, Spinnerei Jungenthal, established in 1799.This is the same family that operated the Jung Jungenthal locomotive works.The highway interchange "Sonnborner Kreuz" highway interchange has transformed 24 ha of the Sonnborn end of Wuppertal.