Precious Waters is a 25 minute long overview of the threats proposed sulfide mining operations (that’s mines that use acid to extract minerals like copper, not mining for sulfide) near the Boundary Waters may have on water in and near the park, including the watershed running from the Iron Range into the St. Louis River and from there into the Lake Superior. Additionally, they point out that this sort of thing can be so loud that it could drive away tourists paying for a peaceful environment. Here is the movie.
You can click to watch it full screen using the link to the left of the Vimeo logo on the lower right part of the window.
Schedule some time to watch this during a food coma or as a bowl game halftime show with the relatives.