ST. PAUL, Minn. (AP) — State regulators who three years ago issued an air quality permit for a proposed copper-nickel mine in northwestern Minnesota stood by their decision in a report released Monday that said the mine did not provide misleading information on its plans. The Minnesota Pollution Control Agency report...does not clear the way for construction. Other major permits remain up in the air because of ongoing court cases or administrative work. Even so, PolyMet CEO Jon Cherry said the action on the air permit “moves us one big step closer” to building the estimated $1 billion mine, which...