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Tunnels

Tunnels

Tunnels Tunnels is a nearly horizontal underground passage which is open at both ends to the ground surface. Tunnels are constructed below cities, rivers and through mountains for carrying railways, rocks, canals water supply and sewerage. In majority of cases, the location and alignment of tunnels and size of the bore are established prior to the geological survey. Before starting the geological investigation, photo-geologic interpretation should be done along ... Read More »

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