"Arizona Mining Project Wins Crucial Permit"
"A Canadian mining company has come one step closer to building a mile-wide, half-mile-deep open-pit copper mine on public land 30 miles south of Tucson. On Thursday, Arizona’s Department of Environmental Quality granted Rosemont Copper, a subsidiary of Augusta Resource of Vancouver, a crucial air quality permit, saying emissions from the proposed mine would not violate federal standards for carbon monoxide, nitrogen and sulfur dioxide, or fine and large particles."