The controversial Kensington gold mine in southeast Alaska has won an important go-ahead from the U.S. Army Corps of Engineers, which approved an amended permit that will allow the mine to dump millions of tons of waste into a nearby lake. The project has been the subject of a national environmental fight over whether navigable lakes and rivers can be used as repositories for toxic mine tailings.
http://latimesblogs.latimes.com/greenspace/2009/08/corps-gives-go-ahead-to-alaskas-kensington-gold-mine.html