Negotiated invitation to tender, deadline 12.06.2013, for underground work for the metro Line 4 extension (lot T1) at Bagneux. Duration of contract 60 months after award. Contact Jean-Philippe Da Costa, RATP, Paris, tel +33 158770350, e-mail jean-philippe.da-costa@ratp.fr. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=142853-2013. Bid Code n. MOP13-0040. 18/13.