HeavyDSparks travels deep into Utah's remote mountains to recover two massive machines abandoned at a former gold mining ...

Layers of people certify that gold is free from rights abuses and criminality. Nobody makes them leave their desks.

An ABC News investigation found abandoned underground mines across the country.

California officials have identified at least 47,000 abandoned mine sites statewide, but many more may remain undocumented, creating ongoing risks for residents, visitors and emergency responders.

ABC News investigates cases of dangerous sinkholes caused by abandoned mines.

The transformation of former mining sites into sanctuaries for bats and diverse wildlife plays a critical role in ecological ...