claim: Mikhail Prokhorov is the former chairman of Russia's largest gold producer.
evidence: Polyus Gold International is the largest gold producer in Russia and one of the top 10 gold miners globally by ounces produced -LRB- 1.5 million ounces of gold production in 2011 -RRB- .. Russia. Russia. Gold. Gold. As of the third quarter of 2014 , the company was the world 's 8th-largest producer of gold .. The company holds the world 's third largest gold reserves with over 90 million. ounces of proven and probable gold reserves underpinning the Polyus Gold 's sector-leading production growth profile -LRB- 8 % increase in gold production in 2011 -RRB- .. Gold. Gold. Polyus Gold International , the new UK-based holding company for Russia 's biggest gold-miner .. Russia. Russia. Gold. Gold. The company 's principal operations are located in Russia 's most prolific gold mining provinces in Eastern Siberia and the Far East and include 5 operating mines , alluvial operations and several advanced development projects .. Russia. Russia. Polyus Gold International has a premium listing on the London Stock Exchange -LRB- ticker  : PGIL -RRB- and is the largest London-listed gold producer gold output and reserves .. Gold. Gold. Additionally , Polyus Gold International GDRs are traded OTC in the US -LRB- ticker  : PLZLY -RRB- .. Gold. Gold. OTC. Over-the-counter ( finance )