Reuters: U.S. environmental regulators laid out proposed protections for Alaska's Bristol Bay watershed on Friday that would effectively block the development of the Pebble deposit, which could be one of the world's largest copper mines.
In a 214-page document posted to its website, the Environmental Protection Agency (EPA) proposed to restrict the use of certain waters in the region for disposal of dredged or fill material associated with mining the Pebble deposit.
It is the latest step by the agency...