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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 ...

(RTTNews) - Anglo-Australian mining giant Rio Tinto Plc (RTNTF, RIO, RIO.L, RTPPF) Tuesday said it has approved a $55 million investment in development capital to start underground mining and expand ...

GALLERY: Underground mining to resume at Kennecott 100+ years after it was halted The Bingham Canyon Mine -- also known as Kennecott -- is recognizable from miles away due to the giant divot in the ...

SALT LAKE CITY – A landslide expected to cut production by half inside a major U.S. copper mine this year will set back the Utah economy, an expert said last week. The effects already are being felt ...

SALT LAKE CITY The landslide at a copper mining pit that loosened enough material to fill two-thirds of the Panama Canal could lower tax revenue, especially for local schools and a fire district, ...