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Concreting is under way on one of three ventilation shafts being constructed for the Al Azhar road tunnel in Cairo's ancient Islamic district.

Concreting is under way on one of three ventilation shafts being constructed for the Al Azhar road tunnel in Cairo's ancient Islamic district. Egypt's biggest construction firm, Arab Contractors, is working with French company Campenon Bernard on the £90M design and construct contract to build the 2.8km long, 8.35m internal diameter TBM driven tunnel. A second twin tube will begin alongside once this is finished. The tunnel passes close to buildings up to 1000 years old, but so ...

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