Open invitation to tender, deadline 21.09.2011, for the construction of 5,369.9 m-long O Canizo tunnel (left tube) section on the Madrid-Galicia high speed line. Contract value EUR75.9 million excluding VAT, duration 35 months. Contact Adif, Madrid, tel +34 917744837, fax +34 917745814, e-mail mjmoro@adif.es. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=249534-2011 and http://prensa.adif.es/ade/u08/GAP/Prensa.nsf/Vo000A/21EF6FA512BB7545C12578D100314910?Opendocument. 35/11.