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Base metals ore-grade quality in mines 2004-2009

This statistic shows how ore quality in seleced commodities has declined between 2004 and 2009. In 2004, 2.22 carats were found per ton of diamond, while this figure had dropped to 1.84 in 2009.

Selected base metals ore-grade quality in existing mines from 2004 to 2009

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Sources

Release date

November 2010

Region

Worldwide

Survey time period

2004 to 2009

Supplementary notes

* g/T = grams per ton
** ct/T = carat per ton

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Statistics on "Precious metals"

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