There’s no shortage of work out there, either. China recently completed a 20-kilometer railway tunnel in the Longmen Mountains after a decade of construction. There’s the HS2 rail project in the UK, which will connect London to towns and cities in the north of the country and is set to feature more than 100 kilometers of tunnels along its proposed route. And Peter Vesterbacka, who used to work for Angry Birds developer Rovio, is behind an ambitious plan to build an undersea tunnel between Finland
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