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  Date 1999
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Hard lessons at Qinling
01 December, 1999
Recent breakthrough of the 18.5km Qinling rail tunnel in the remote north west of China marked a significant stage in building one of the longest rail tunnels in the country, where imported TBM technology was used for the first time by local crews on a major scheme. The project has proved instructive for both client and TBM manufacturer, Wirth. Editor Steve McCormack visited the remote site to see how a combination of TBM and drill+blast technology was employed to complete this impressive drive.