Stone & Webster Construction Inc. has agreed to pay $6.2 million to settle a multiyear federal probe into alleged improper recordkeeping of injuries and site safety under a $10-billion long-term contract with the Tennessee Valley Authority for modifications and maintenance work at nuclear plant sites in Tennessee and Alabama. The U.S. Justice Dept. announced the pact on Jan. 22 with Stone & Webster, a unit since 2000 of Baton Rouge-based The Shaw Group. Photo: TVA Stone & Webster understated injuries at TVA nuclear plants. The settlement also requires Stoughton, Mass.-based Stone & Webster to enter into a first-of-its-kind comprehensive two-year
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.