The Dept. of Energy has announced how it will spend more than $9 billion in federal funds under the recently enacted economic-stimulus measure, with much of the money aimed at construction projects. DOE on March 31 released its plans for the American Recovery and Reinvestment Act's $6 billion to accelerate environmental cleanup work at former nuclear-weapons sites across 12 states around the country. Five days earlier, the agency disclosed its breakdown of $3.2 billion for a new Energy Efficiency and Conservation Block Grant program that the stimulus statute created. Photo: U.S. Dept. of Energy Funds at Hanford will help reduce
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.