Division of Economics and Business Professor Graham Davis, who specializes in mineral asset valuation and economic development of mineral-based economies, contributed to the Minnesota Public Radio story, “Environmental lawsuits pile up as PolyMet mine crawls forward.” From the story: Still, litigation can mean delays. Especially lawsuits expected later in the process, when the state Department of Natural Resources makes its decision whether to grant PolyMet a permit to mine. "Delays are never good," said Graham Davis, a professor of mineral economics at the Colorado School of Mines. He said ....