The Tunnel Congress organised by the NFF (Norwegian Tunnelling Society) in collaboration with the ITA bore the slogan “Surface Challenges – Underground Solutions”. 52 of the 74 ITA member nations were present in Bergen. This meant that the 70 % attendance figure registered was 8 % lower than last year in the USA (see info box on page 53).
1 2017 World Tunnel Congress
The Congress’s main programme was devoted to 15 topics:
1. Urban tunnelling
2. Mechanized tunnelling in hard rock conditions
3. Innovations in drill & blast tunnelling
4. Tunnelling for energy and environmental purposes