Open invitation to tender, deadline 25.05.2011, for provision of temporary ventilation facilities during refurbishment of two rail tunnels on Koeln-Rhein/Main high-speed line, Limburger (Hesse - 2.395 km) and Dernbacher (Rhineland-Pfalz - 3.305 km). Contract commences 26.09.2011 for completion 10.12.2011. Further information, specs and docs from Ines Bartl at DB Netz in Berlin, tel +49 3029756887, fax +49 6926521757, e-mail Ines.Bartl@deutschebahn.com to whom tenders or requests to participate must be sent. Time limit for accessing documents 03.05.2011. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=109333-2011. 14/11.