Imminent invitation to tender for 800 m-long x 35 sq m single tube extension in loess and marl of line 306 between Hans Bockler Strasse and Sud Ring using traditional shotcrete techniques to start construction October, 2001 on three-year programme. Monitor http://ted.eur-op.eu.int 15/01.Open invitation to tender, deadline 26th June, 2001, for construction of 800 m-long tunnel for BGS. Contact fax +49 234 910 1586. Visit http://ted.eur-op.eu.int 22/01.