The U.S. Forest Service has issued its final supplemental environmental impact statement and draft record of decision to allow expansion of the Kensington Mine, about 35 miles south of Haines. The expansion would extend the mine’s life to 2033.
The project would include raising the height of the tailings treatment dam by 36 feet to store more waste rock from the mining operation, and constructing a 40-foot-high back dam between the tailings treatment facility and…