By popular request, the deadline for abstract submissions for WTC2015 in Croatia has been extended to 01.11.2014. To date, more than 500 abstracts for WTC 2015 have been received, showing a strong interest in the show, which is dedicated to developing the use of underground space in SE Europe. tunnelbuilder is a proud media partner of the international congress, which will be held from 22-28 May, 2015 in Dubrovnik. Further information from http://wtc15.com/ and at ITA Croatia stand (Pad. 19 - A1) in Expotunnel. 43/14.