Open invitation to tender, deadline 21.06.2011, for construction of Brenner base tunnel exploratory drive in Periadriatic seam and preparatory works for construction of main buildings at adit mouth. Contract duration 890 days. Time limit for accessing documents 01.06.2011. Further information, specs and docs from Dr Johann Hager at BBT in Innsbruck, tel +43 51240-30, fax -30110, e-mail ava@bbt-se.com to whom tenders or requests to participate must be sent. Time limit for4 accessing documents 15.06.2011. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=136261-2011. Bid Code AP118. 18/11.