Construction of the first-ever railway line in the oil-producing African nation of Chad is set to start next year. The former French colony signed a $7-billion contract with the China Civil Engineering Construction Corp. in mid-March. Map: Justin Reynolds The new, 1,344-km-long rail line will link landlocked Chad to Cameroon and Sudan. The new, 1,344-kilometer-long railway will link landlocked Chad to its neighbor to the west, Cameroon, and its neighbor to the east, Sudan. The route is expected to facilitate access to the international markets. CCECC President Yuan Li told reporters in N'Djamena during the signing of the construction deal
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.