U.S. Dept. of Energy laboratories are finishing up work on hundreds of millions of dollars worth of stimulus-funded infrastructure work that could accelerate research for breakthroughs in energy, medicine and other areas. However, transferring that research and development to the marketplace poses challenges. Image courtesy Princeton Plasma Physics Laboratory Electrical upgrades will help power accelerated magnetic fusion experiments at DOE's plasma physics laboratory in Princeton, N.J. The Princeton lab received nearly $14 million in stimulus funding. Photo courtesy of Fermi National Accelerator Laboratory Construction is nearly complete on a research building at DOEs Fermi lab in Illinois that expands R&D
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.