President Obama has signed legislation that aims to help pension plans cope with losses they sustained when financial markets tumbled in 2008 and 2009. Lawmakers removed the pension provisions from a package of tax-break extensions and attached them to a measure that temporarily cancels a looming cut in Medicare payments to physicians. The Medicare-pensions measure gained final congressional approval when the House passed it on June 24. Obama signed the bill the following day. The measure has relief for single-employer and multi-employer, defined-benefit plans. For multi-employer plans, which affect unionized workers and employers in construction and certain other industries, enactment
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.