A federal investigation of impeached ex-Illinois Gov. Rod Blagojevich (D) has resulted on April 2 in six indictments for fraud and extortion that include construction executives. Christopher Kelly, a roofing contractor, and William Cellini, president of the Illinois Asphalt Pavement Association, were indicted along with Blagojevich, his brother, his chief of staff and a lobbyist. Cellini was similarly indicted last October.
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.