allowing engineers to tunnel through a wide variety of terrains. However, the equipment is not only a feat of engineering but also combines high-end technology from electronics, information ...

Road construction in Limoges uncovered a ventilation shaft and underground tunnels built by the ancient Romans as an aqueduct. Photo from F. Devevey and Inrap During construction work in a city of ...

Ancient masters of engineering, aqueduct builders created ... and examples abound of tunnels, drainage systems, and cisterns, sometimes of considerable size. Yet although the water management ...