The community of Greenstone feels it now has a leg up in attracting a Ring of Fire refinery. Consultant George Smitherman says his study shows that the town of Exton should be the top choice for Cliffs Natural Resources when it makes a decision on a smelter location. He says at the heart of the Exton's strength is its proximity to the mine site and its relations with First Nations. Cliffs hopes to make a decision by the end of the year.