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So there's an inactive gold & silver mine called Minnesota Mine...but it's in Colorado. New research on acid mine drainage, from @USGS_CO via #springerlink: https://t.co/Eb4UmfabOx
So there's an inactive gold & silver mine called Minnesota Mine...but it's in Colorado. New research on acid mine drainage, from @USGS_CO via #springerlink: https://t.co/Eb4UmfabOx