 According to the Duluth News Tribune, the leak occurred in a pipe that brings wastewater from a coal ash pond to the coal-fired power plant for use as process water. Delegates to the Republican National Convention in Milwaukee will hear from the party's vice presidential nominee tonight. Last night, speakers focused on crime and immigration concerns. Minnesota Congressman Tom Emmer, who is the House majority whip, spoke last night and predicted that Minnesota, which has not elected a Republican president since Nixon, will help elect Donald Trump come November.