Pioneering Underground Technologies REFERENCES T UNNELLING REFERENCES EXPLORAT ION REFERENCES MINING CASE ST UDIES Doha Metro Gotthard Base Tunnel Crossrail London Metro Guangzhou Road Tunnels in Shanghai Nant de Drance Pipeline North-South-Route Pearl-River-Delta T unnel boring machine Vict oria being lifted into the Limmo Peninsula launch shaft. Over a distance of 8.2 kilometers it drove beneath Soho, Hyde Park and some of the most expensive re

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