$MUX hooks up with Rio Tinto Copper McEwen Copper Completes Oversubscribed US$81.85 Million Offering Including a $25 Million Investment by Nuton, a Rio Tinto Venture https://ih.advfn.com/stock-market/NYSE/mcewen-mining-MUX/stock-news/88957915/mcewen-copper-completes-oversubscribed-us-81-85-mi