History made as Dorothy – HS2’s state-of-the-art tunnel boring machine – completes the project’s first tunnel after 8 months underground

History made as Dorothy – HS2’s state-of-the-art tunnel boring machine – completes the project’s first tunnel after 8 months underground

Dorothy, HS2’s whopping 2000-tonne custom-made tunnel boring machine, has completed her first tunnel breakthrough along the London to Birmingham route     this is the first of 64 miles of intricate tunnels set... Read more »