Copper Miners Surge Amid Glencore Production Decline By: TalkMarkets February 04, 2020 at 14:20 PM EST Shares of copper miners Glencore and Freeport-McMoRan are rallying on Tuesday after Glencore reported a 2019 shortfall in copper output. Read More >> Related Stocks: Barrick Gold Corp Freeport-McMoRan Glencore International Plc ADR Southern Copper Corp Turquoise Hill Resources Ltd