Dayton: PolyMet must set aside funds for mine cleanup

Dayton overlooking Gilt Edge Mine.
Gov. Mark Dayton stood on a vantage point at Gilt Edge Mine in western South Dakota on Oct. 27, 2015. His visit is one of two trips he's making as he weighs what he pegs as one of the toughest decisions of his two terms as governor. Dayton also plans to travel to a newer mine in Michigan later this week.
Courtesy Governor Dayton's office