Georgia Gov. Nathan Deal (R) signed legislation on May 13 that expands state requirements to use the federal E-Verify system to check the immigration status of employees. It also closes a loophole for project worker identification and sets severe penalties for violations. Building on previous state rules that required public owners and public-works contractors to use E-Verify, the new law expands mandates to all businesses with more than 10 employees. The new rules will take effect on Jan. 1 for employers with 500 or more full-time employees; on July 1, 2012, for those with between 100 and 499 workers; and
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.