Excavation begins for HS2’s first ‘barn design’ tunnel vent shaft
Work has now begun to excavate the first of five shafts that will provide ventilation and emergency access to HS2’s ten-mile long tunnels under the Chiltern Hills. The structure was designed by HS2 Ltd’s main works contractor Align JV, made up of Bouygues Travaux Publics, Sir Robert McAlpine, and VolkerFitzpatrick Read more…