Related Links: First Report of the Jefferson County Sewer System Receiver Officials of Jefferson County, Ala., and the state are negotiating with creditors for another week while they try to avoid a $4.1-billion bankruptcy filing. All it took to reach this point is bad spending on a sewer system overhaul, bad financing and changing of the county's debt structure. If county officials decide to seek protection from creditors, it may become the biggest municipal bankruptcy ever. Jefferson County includes Birmingham, Alabama's biggest city.The Jefferson County Commission and creditors agreed July 28 to postpone until Aug. 4 a decision on filing after creditors
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.