The LTV taconite mine closed in 2001. PolyMet Mining wants to convert it to a copper-nickel mine. Minnesota has no experience with this type of mining, but other such mines around the world have caused serious damage to water systems. (Photo Courtesy of PolyMet Mining)

“Mining companies hoping to tap Northern Minnesota’s non-iron metal deposits have set up camp in the metro area.They’ll spend hundreds of millions of dollars and create hundreds of jobs in the Duluth region if their proposed mining operations win regulatory approval. In the meantime, these metro miners are already writing checks in the Twin Cities,”

via Business Journal.