The Senate at press time was nearing a vote on extensions and expansions of American Recovery and Reinvestment Act tax and benefit provisions. Advocates won a procedural vote on Nov. 2, moving the bill closer to final action. The measure would extend ARRA’s $8,000 first-time homebuyers’ tax credit to contracts through April 30. It also would give a $6,500 credit to those who owned and lived in their present house for five years and seek to buy a new home. The bill would widen ARRA’s small-business five-year operating-loss carry-back to cover all companies. It extends unemployment benefits for 14 weeks,
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.