Construction’s unemployment rate jumped from 17.4% in June to 18.2% in July, according to the U.S. Bureau of Labor Statistics. The July rate was 10% above a year ago and well above the average July unemployment rate of 6% between 2004 and 2007. July’s unemployment rate represents 1.687 million blue-collar and white-collar workers who are out of work. SOURCE: U.S. Bureau of Labor Statistics. Construction unemployment rate for July
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.