Russia has decided to build a space complex in its far eastern Amur region. The Vostochny Cosmodrome will be located near the town of Ugelgorsk, 100 kilometers from the Chinese border and about 800 km north of Vladivostok. Russia currently uses two launch sites: the Baikonur space center in Kazakhstan, which it has leased since the collapse of the Soviet Union, and the Plesetsk space center in northwest Russia. The Soyuz and Progress spacecraft that service the International Space Station both launch from Baikonur. Vostochny, which eventually will employ between 20,000 and 25,000 workers, will give Russia independence in it’s
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.