A gold and antimony mine approved in eastern Valley County is well-positioned for future expansion, according to executives for the mining company.  On Wednesday, Perpetua Resources outlined preliminary plans for a possible expansion of its Stibnite mine, which was approved earlier this year following an eight-year review by the Payette National Forest.  Marcelo Kim, who … Continue reading ‘Not blue sky prospects’: Perpetua eyes potential Stibnite expansion