Taconite plants on Minnesota’s Iron Range will now get two extra years to comply with a rule that would have forced them to cut how much mercury they release into the air. A proclamation signed by ...

DULUTH — President Donald Trump is giving Minnesota’s taconite iron ore mines two more years to comply with a U.S. Environmental Protection Agency mandate to reduce their mercury emissions — a rule ...

DULUTH — Federal regulators and the state’s two taconite mining and processing companies have agreed on limits for a pair of pollutants causing haze in the region’s national parks and wilderness areas ...