Taconite producers would get additional time to meet certain air quality standards if a request from U.S. Rep. Rick Nolan is honored.
Minnesota Public Radio reports that the Environmental Protection Agency wants Minnesota's taconite plants to install cleaner-burning furnaces over three years. The 8th District Democrat said he's telling the EPA the companies need up to five years to try out the new technologies.
Federal and state scientists said that Iron Range taconite plants contribute to haze over the Boundary Waters Canoe Area Wilderness and Voyageurs National Park.
Environmental groups are criticizing Nolan's position.