I don’t think they have an estimate of how much is left, but the USA is the 4th largest gold producing nation. Most of our gold comes from mines in Nevada. New technology has even allowed them to retrieve gold from low-grade deposits.
The US Geological Survey estimates 3000 metric tons of gold reserves in the US, out of 47,000 in the world, plus as much as 18,000 tons of god resources. (Resources are known and unknown deposits that may or may not be or become economic to produce. Reserves are economically producible at the present time.)
Oops, that should read “18,000 tons of gold resources” 🙂
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