Qualification system with call for competition for proposed list of construction, equipment and services suppliers. The bid includes construction, refurbishment and maintenance of railway tunnels. Contact Adif, Madrid, tel +34 917674391, fax +34 917674490, e-mail dcompras@adif.es. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=223638-2012. Bid Code n. S-2009/0800/0001. 29/12.
