Rio Tinto Kennecott, the world's largest open-pit mine, is now open for visits for the 2025 season. Operating since 1903, ...

A sump at the Cobre Panama copper open-pit mine during ... Court ruled that the mining concession was unconstitutional, in Donoso, Panama, Friday, March 21, 2025. (AP Photo/Matias Delacroix) ...

But 40 years of satellite photos ... mining in Bingham Canyon was underground, although the vast majority of ore has come from more than a century of digging what was once the world’s largest ...

The newspapers both quoted a local journalist as saying the mine wall that collapsed was approximately 115 feet tall. Photos posted to social media from the scene showed a large, open pit of clay ...

The new open pit mine will operate above and around the site of Vale’s old Stobie Mine, which ceased operations in 2017 and was mostly demolished in 2020. (Supplied/Concrete Pictures Inc ...

HELENA — The Montana House on Thursday endorsed a bill that would allow cyanide leaching of ore from new open-pit gold or silver mines in the state, and thus amend a 1998 voter-passed initiative ...

A copper mining company hopes to explore a site near Boise River headwaters for an open-pit mine north of Idaho City, but environmental groups say the project would threaten water quality and ...