Steven Chu, Nobel laureate and head of the Lawrence Berkeley national laboratory, appears headed for fast Senate approval as energy secretary. At a Jan. 13 hearing, Senate energy committee Chairman Jeff Bingaman (D-N.M.) said he backs Chu. Sen. Lisa Murkowski (R-Alaska) expects Chu to be approved. Chu said he’s committed to defense-site cleanup and that it “makes good sense” to have cleanup aid in a stimulus bill.
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.