COPPERTON, Utah — Utah's famous copper mine is bringing back its underground mining operation, which ended more than 100 years ago when it shifted to an open-pit method. Rio Tinto's Kennecott Copper ...
A court has upheld a ban on open-pit mining in the Philippine province of South Cotabato, home to the largest known untapped deposits of copper and gold in Southeast Asia. The ruling is the latest ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results