More top federal posts are being filled. The Senate on May 21 confirmed Maryland Dept. of Transportation Secretary John Porcari as deputy U.S.DOT secretary; Senate appropriations staffer Peter Rogoff as Federal Transit Administration chief; and Michael Connor, a Senate energy committee aide, to lead the Bureau of Reclamation. Long-time Dept. of Energy official Ines Triay was approved on May 20 as DOE assistant secretary for environmental management.
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.