Hunters and anglers applauded a proposal Thursday from federal agencies that would protect the nation’s most visited wilderness, the Boundary Waters Canoe Area Wilderness in northeastern Minnesota. A long-awaited analysis from the U.S. Forest Service shows that copper-nickel mining poses a major risk to the BWCA, and the USFS draft environmental assessment proposes a 20-year ban on copper-nickel mining on federal lands in the watershed.