The gold industry has released new guidelines for bullion miners under pressure to disclose the real economics of producing an ounce of metal, feeding a debate over the sustainability of many gold mines in a sector battered by falling prices.
How Gold Bullion is Made
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Gold alloy bars are seen at Altyntau gold mine extraction factory outside the northern town of Kokshetau in northern Kazakhstan.
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Kazakhstan -- Dump trucks drive along a road at Altyntau open pit gold mine outside northern Kazakhstan's town of Kokshetau, 13Jun2013
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A worker wearing heatproof suit pours molten gold from a crucible into a mould in a workshop of Altyntau gold mine extraction factory.
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A worker wearing heatproof suit takes a gold alloy bar out of mould in a workshop of Altyntau gold mine extraction factory.