Frejus Survey – Frejus Tunnel Monitoring Inspection and monitoring support for the Frejus Tunnel and its underground duct system. Opened in 1980, the Frejus Tunnel extends for over 12 kilometers. In compliance with EU safety regulations for tunnels within the TEN-T...
TMB Survey – Mont Blanc Tunnel Monitoring Inspection support for the Mont Blanc Tunnel and its underground duct system. Opened in 1965, the Mont Blanc Tunnel stretches over 11 kilometers and was, for many years, the longest road tunnel in the world. Today, it remains...
