Twin Metals is a joint venture between Duluth Metals, which owns 60 percent, and Chilean mining company Antofagasta PLC, which owns 40 percent.Another company, PolyMet Mining Corp., which is developing an open pit mine for the same metals mine near Hoyt Lakes, is further along in the planning and regulatory process, but Twin Metals would be a much larger project.
Twin Metals Mine Estimate Boosted 19 Percent
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