A sprawling reservation in southern Ohio long associated with the nuclear industry has been selected as the site for construction of Ohio’s third nuclear powerplant. If the project goes forward, it will be one of only a few nuclear plants in the U.S. proposed for a greenfield site. Duke Energy, Charlotte, N.C.; AREVA and USEC Inc., both of Bethesda, Md.; UniStar Nuclear Energy, Baltimore; and the Southern Ohio Diversification Initiative, Piketon, Ohio, have formed an alliance to develop the country’s first so-called Clean Energy Park on the site in Piketon where USEC’s Portsmouth Gaseous-Diffusion Plant enriched uranium for powerplant fuel
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.