Mining stocks rocked by Dr. Copper’s tumble By: MarketWatch January 14, 2015 at 11:39 AM EST Copper mining shares tumble as worries about a global economic slowdown, particularly in China, send copper prices to five -and-a-half year lows. Read More >> Related Stocks: Bhp Billiton Ltd ADR Freeport-McMoRan Glencore International Plc ADR Southern Copper Corp