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How the Earth Was Made - America's Gold

Seizoen: 2 - Aflevering: 13 / 27 - Eerst uitgezonden: 02 maart 2010 - Episode ID: 476367

In the deserts of Nevada, research analysts will examine sedimentary rocks, which have built up over many years, to reveal how extracting several layers of rocks can lead to the discovery of gold residing deep below the surface.