Metal ores like gold and silver were the driving force behind this period's mining boom. In 1859, there was a Gold Rush in Colorado.
The Pike's Peak Gold Rush, also known as the Colorado Gold Rush, was a period of intense gold prospecting and mining in western Kansas Territory and southwestern Nebraska Territory of the United States that started in July 1858 and lasted until roughly the day Colorado Territory was established on February 28, 1861. One of the biggest gold rushes in North American history involved an estimated 100,000 prospectors.
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