The Supreme Court’s decision to lift campaign-finance restrictions on corporations has sparked mixed reactions in construction circles. Some contractors’ organizations hail the Jan. 21 ruling as a free-speech victory that will give more groups a stronger political voice. But labor unions and non-profit advocacy groups worry the decision will unleash a wave of corporate spending that could sway election results. Campaign finance decision is expected to have a dramatic impact on the political process. The high court’s 5-4 ruling in the case, Citizens United v. Federal Communications Commission, permits corporations to spend unlimited amounts on political advertising 60 days before
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.