A record deposit of 80 million ounces of gold and silver and 12 million tons of copper has been discovered in the Argentine ...

Mining continues at the Continental Pit. Nearby is the Berkeley Pit, a site for acid mine drainage that poses an opportunity ...

Comprehensive surface sampling program: The program consisted of 2,263 soil and 303 rock samples over a 20 km² area around the Yuma King Mine and represents the first systematic property-scale soil ...