Looking to see old mine maps? Penn State’s Pennsylvania Mine Map Atlas can help you search your address and see maps of ...

Archaeologists recently unearthed an impressive mining complex dating back 3,000 years, which had been used to extract gold and pulverize and filter quartz.

Deep in the Mojave National Preserve lies an old open pit mine where workers dug and drilled for gold and silver from the late 1800s to the 1990s. Miners are back at the Colosseum Mine today ...