Construction's unemployment rate showed another year-over-year improvement in November, dipping to 18.8% from the November 2009 level of 19.4%, but also was worse than October's 17.3%. The Bureau of Labor Statistics' latest monthly employment report, released on Dec. 3, also shows that construction lost 5,000 jobs in November, on a seasonally adjusted basis, after gaining 3,000 in October. Looking at industry segments, BLS reported that the 6,800 jobs lost in specialty trade contractors last month more than offset gains in the buildings and heavy-civil construction sectors. November was the second-consecutive month in which the construction jobless rate was lower than
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.