Photo Courtesy of Hank's Truckforum Great Lakes Concrete truck delivers a load; firm and CEO pleaded guilty to price-fixing. A federal antitrust probe has snagged a handful of Iowa ready-mix firms in a price-fixing scheme spanning more than three years.Great Lakes Concrete Inc., Spencer, violated federal antitrust law, which carries up to $100 million in fines, for bid-rigging and price-fixing ready-mix sales in northern Iowa, the U.S. Justice Dept. says. The firm pleaded guilty to one felony count on Aug. 24. The company plea follows a similar plea last year by its president, Kent R. Stewart. He was sentenced in
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.