The Obama administration has extended the deadline until June 30 for implementation of mandatory E-Verify use by federal contractors to determine employment eligibility of their new hires. The policy was set to go into effect on Jan. 15. “The extension provides the administration an adequate opportunity to review the entire rule prior to its applicability to federal contractors and subcontractors,” says the Dept. of Homeland Security.
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.