San Manuel Mine was once the world’s largest underground copper mining operation in size of ore body, production capacity and infrastructure.

The northeastern slope of the Santa Catalina Mountains, north of Tucson, has a long history of sporadic gold production.

Historic mining area Pegasus Gold Corp. excavated the southwestern face of the Little Rockies in Phillips County from 1979 to 1996 using cyanide heap leaching to extract small amounts of gold from ...

Historic Jeddah represents this cultural world that thrived, thanks to international sea trade; possessed a shared geographical, cultural and religious background; and built settlements with specific ...