On March 24, the grand jury indicted Matthew D. Correll, who was on the staff of a subcontractor of Bechtel Group Inc. at the $2.5-billion Watts Bar Unit 2 nuclear powerplant expansion site in Rhea County, Tenn. Correll was charged with falsely indicating last August that he had measured and inspected cables that were to supply energy to safety systems in the unit’s nuclear reactor containment structure. In a March 25 statement, the subcontractor, Williams Specialty Services LLC, Tucker, Ga., said Correll’s employment ended last September. The firm is a wholly-owned subsidiary of Williams Industrial Services Group LLC, which ranks
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.