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People who like reply on India announces an Int'l tender for a sub-sea 21 km long twin-bore rail tunnel (TBM & NATM)
Heiko vd Berg on India announces an Int'l tender for a sub-sea 21 km long twin-bore rail tunnel (TBM & NATM) (): It seems a pretty bold project. 21 km under the sea twin tunnels...
cover tunnel photo by: Matt Brown from London, England / CC BY
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