Keen to reduce their region’s growing energy reliance on Russia, European financial institutions have thrown their weight behind the $10.3-billion Nabucco gas pipeline through Turkey. Map: Walter Kornegay And Sue Pearsall For ENR Nabucco pipeline would provide gas delivery route that avoids Russia. Russia is fighting back with two rival projects, the first already well into construction. Together, the three pipelines could pump 149 billion cu meters of gas per year into the continent. The 3,300-kilometer-long Nabucco pipeline will cross Turkey, continue through Bulgaria, Romania and Hungary, and terminate some 50 km inside Austria at Baumgarten. It is planned to
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.