The congressionally authorized Special Inspector General for Iraq Reconstruction on Jan. 13 released a final audit of southern Iraqi oil-sector reconstruction by Kellogg Brown & Root Services Inc. for the U.S. Army Corps of Engineers. KBR was working under a competitive, $1.2-billion-maximum contract awarded in January 2004. Due to modifications, often for government convenience, the end cost was $722.3 million. The audit says a lack of security, as well as poor pre-war maintenance by the Iraqis, drove up task-order costs. It says although the Iraqi government now has better facilities than before the war, “it is likely” the value of
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.