Open invitation to tender, deadline 10.05.2013, for ventilation equipment in 735 m-long Wahnscheid and 570 m-long Dickheck tunnels on Koeln-Rhein/Main high-speed line. Contract commences 02.09.2013 for completion 28.09.2013. Contact Ines Bartl at DB Netz in Berlin, tel +49 3029756887, fax +49 6926521757, e-mail Ines.Bartl@deutschebahn.com. Time limit for requests for documents 19.04.2013. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=090759-2013. 12/13.