http://business.financialpost.com/2013/01/08/goldcorp-adopts-all-in-cost-measure-to-address-transparency-valuation-issues/
http://en.wikipedia.org/wiki/Largest_gold_companies
http://business.financialpost.com/2013/01/08/goldcorp-adopts-all-in-cost-measure-to-address-transparency-valuation-issues/
http://en.wikipedia.org/wiki/Largest_gold_companies