Hubbardston Iron Mine
The Hubbardston Iron Mine is near Hubbardston, Massachusetts. The Hubbardston Iron Mine was closed at the time of data entry with no known plans to re-open. The New England Upland Section of the Appalachian Highlands characterize the geomorphology of the surrounding area.
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** The mine central point is based on an average of the mine's bounding box(es) and does not necessarily fall on the claim itself.
1 World-class significance is determined by total endowment of the contained commodity. This includes all past production and remaining reserves. Each commodity is considered separately and commodities cannot be combined to arrive at a significant size. The tonnage thresholds are from the mine model grade-tonnage studies. As of June 2008, many entries were classified as significant under less strict rules.
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