Gold and Silver Companies with the Potential to Move the Needle By: TalkMarkets May 06, 2016 at 05:01 AM EDT The two times mining companies add the most value are upon first discovery and when they are nearing development and production. Read More >> Related Stocks: Coeur Mining Inc Fresnillo Plc MAG Silver Corp Pershing Gold Pretium Res Inc SPDR GOLD Silver Trust Ishares