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More than 40 million troy ounces have been mined in Colorado since its discovery there. Current mines are producing up to 200,000 troy oz. per year. Prices have risen to about $1,000/ troy oz. up from $300/troy oz, ten years ago. Natural silver nugget. Silver has been worth as much as $49.45 /troy ounce (Aug 1980) and is currently at $12/troy oz. ................
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