Invitation to tender using negotiated procedure, deadline 05.02.2013, for supply and installation of ventilation equipment for section Wolframstrasse to junction with Tuerlenstrasse in Wagenladungsstrasse tunnel. Further information, specs and docs from Hans Kammerer at DB AG in Stuttgart, tel +49 7112092-1297, fax –3690, e-mail hans.kammerer@deutschebahn.com, to whom tenders or requests to participate must be sent. Visit http://ted.europa.eu/udl?request=Seek-deliver&language=en&docid=019702-2013. 04/13.