A ready-mix concrete company in Iowa has pleaded guilty to anti-trust charges. According to the May 18 complaint, GCC Alliance Concrete Inc., Orange City, Iowa, conspired with other competitors to fix prices and rig bids between January 2008 and August 2009. Sentencing is pending. The plea bargain comes after GCC’s former sales manager Steven VandeBrake was sentenced in February to serve 48 months in prison and a criminal fine of $829,715.
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.