MMC Norilsk Nickel ("Group"), the largest mining company in Russia, produces four main metals - nickel, copper, palladium, and platinum and a variety of by-products, such as cobalt, rhodium, silver, gold, tellurium, selenium, iridium, and ruthenium. The Group is involved in prospecting, exploration, extraction, refining, and metallurgical processing of minerals and production, marketing, and sale of base and precious metals.