The United States and Canada signed a trade agreement on Feb. 12 that seeks to address concerns over “Buy American” provisions of the American Recovery and Reinvestment Act as well as other long-standing procurement issues between the two nations. U.S. Trade Rep. Ron Kirk says that the deal will result in “tens of billions of dollars” in new job-supporting contracts for U.S. firms. “For years, U.S. firms have sought market access to Canadian provincial procurement under the World Trade Organization Government Procurement Agreement [GPA], which Canada resisted,” Kirk adds. The pact provides permanent U.S. access to Canadian provincial and territorial
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.