Europe’s largest energy project, Nord Stream, this month received vital approvals from Sweden and Finland when they gave their OKs for the twin underwater pipelines to pass through their exclusive economic zones in the Baltic Sea. + Image Image: Nord Stream AG The natural gas pipeline across the Baltic sea Nord Stream will carry natural gas 1,220 km, from Vyborg, Russia, near St. Petersburg, to Greifsburg, Germany. It will cross the territories of four other nations: Sweden, Finland, Denmark and Poland. Only Russia and Germany still have to approve the project, but that is considered a formality. The 1,220-km offshore
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.