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    • Paul K. Madsen

      Ryfast

        Ryfast is a chain of subsea tunnels in the southwest of Norway. Ryfast tunnels connects Stavanger (the fourth largest city in Norway) w...other side of the Boknafjord. Ryfast consists of two tunnels: Ryfylke Tunnel: It lie...

      • Robin McAuley

        Conventional Tunnelling versus Mechanized Tunnelling

          Why choose Mechanized Tunnelling over Mechanized Tunnelling? Or vice versa...entional Tunnelling is, in general, still accepted as the effective method for tunnels shorter than 4 kilometers in...

        • Robin McAuley

          How much does a Tunnel Boring Machine (TBM) cost?

          This is a general guide for how much a Tunnel Boring Machine (TBM) costs. TBM pri...1m. Especially for the large diameter TBMs used for multi-level, multi-lane tunnels, increase per-meter will be m...