References
- ICE Railway
Tunnels, Köln - Rhein/Main / Germany
- Hallandsas
Railway Tunnel , Halmstad / Sweden
- Potsdamer
Platz, Berlin / Germany
- Tunnel
Engelberg, Leonberg / Germany
- Dekra,
Stuttgart / Germany
- DaimlerChrysler,
Stuttgart / Germany
- HP Business
Center, Böblingen / Germany
- Tunnel
Waldau, Stuttgart / Germany
- Asia
Center, Budapest / Hungary
- Binzmühle,
Oerlikon - Zürich / Switzerland
- Wankdorf-Stadion,
Bern / Switzerland
- N5 Birchitunnel,
Biberist / Switzerland
- N5 Wititunnel,
Grenchen / Switzerland
- Tunnel
B188, Grosstal Birkental Tirol / Austria
- Lovald
Tunnel / Norway
- Banngelökka
Tunnel / Norway
- Island
Tunnel / Norway
- Tunnel
Ried Kaltenbach B169 / Austria
- Railway
Tunnel / Taiwan
- Pragsattel
Tunnel, Stuttgart / Germany a.s.o.
