Oberhausen-Osterfeld Süd–Hamm railway
The Oberhausen-Osterfeld Süd–Hamm railway , also called the Hamm-Osterfeld line , is a 76-kilometre long double-track electrified main line railway at the northern edge of the Ruhr in the German state of North Rhine-Westphalia . 
<triplet> Oberhausen-Osterfeld Süd–Hamm railway <subj> North Rhine-Westphalia <obj> located in the administrative territorial entity <triplet> Ruhr <subj> North Rhine-Westphalia <obj> located in the administrative territorial entity