Through the Alps at 1.4 metres a day

Implenia is building Lot 3 of the Mont-Cenis Base Tunnel for TELT Lyon Turin. The base tunnel, which will be 57.5 kilometres long overall, forms part of the Lyon-Turin railway line. We find out why the site has no tunnel boring machine, but does have, for example, the concrete spraying robots used in conventional tunnelling; and we see just what an important role sustainability plays here.

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