Listed under Industrial in Alaska, United States.
The Alaska-Juneau Mine, or A-J for short, which operated from 1882 to 1942, was the most productive gold mine in North America for a while. It has been converted into a museum that is heavily patronized by cruise ships doing the Inner Passage, which is how I got to see it. A variety of mine equipment is demonstrated by knowledgeable guides, and you can get right up close to the actual mineralization: gold-bearing quartz in greenschist. You are only seeing a small portion of the mine, however, as Mt. Roberts is riddled with over 100 miles of abandoned passages.
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Greg Brick.
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