At the expense of repeating myself, I say again: I am convinced that the most successful mine closure ever is that of the Cannon Mine near Wenatchee. At this link is a website that tells it all.
I spent two years on site, desinging the facility as we constructed it. Recall that in the early 1980s cash was tight and new mines were far and few. We decided to design as we went.
I was lucky to have as one of my peer reviewers the best dam engineer i have ever been privileged to work with. Syd Hillis had been the chief geotechnical engineer for Revelstoke, the highest earth dam ever, and Tarbela, the largest earth dam ever. He demanded the very highest standard of engineering from me and all those involved in the construction.
I left the site and went on to other things. Great engineers took over. They operated the tailings facility. They raised the embankment. And then they closed the site.
Today the site is closed. It is now the Dry Gulch Riding Stable. Recently the area around the dam was made a preserve for riding. It is a beautiful place to behold.
This one mine proves, in my opinion, that you can open, operate, and close mines close to towns. But it is costly and must be done right.