Photo courtesy Duke Energy Duke Energy's board initiated its own study of the problems at Crystal River prior to the closing of the merger with Progress Energy. Results from that confidential study boosted the board's concerns about Bill Johnson's leadership. Related Links: Florida, Progress Energy Reach Fix Plan for Crystal River Fla. Public Counsel Calls Botched Repair at Crystal River 'A Huge Construction Negligence Case' Progress Energy: No Way to Predict Nuke Plant Cracking As the state of North Carolina widens its probe into utility Duke Energy’s surprise ouster of its just-named CEO, officials there and in Florida are increasing
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.