A U.S. district judge in Arizona has opened the door for the next round of legal wrangling as environmentalists and some ...

A legal battle over the controversial Copper World Mine has reignited concern among residents of Sycamore Canyon, a ...

A federal judge laid out a timeline for the government to advance a contentious land exchange and copper mine but didn't halt ...

A sacred Apache site east of Phoenix may soon be turned into a two-mile crater to make way for mining of $150 billion worth ...

The opponents of Resolution Copper's plans for a massive mine on land sacred to Apache tribal members have a two-month ...

Miami lies about 125 miles north of Tucson. Eight of Arizona’s top 10 ranked releases in 2018 came from copper mines and smelters. They include Asarco’s Mission Mine complex in Sahuarita ...

Rio Tinto and BHP has taken a major step in developing one of the world’s largest undeveloped copper mines after receiving ...

U.S. Department of Agriculture Secretary Brooke L. Rollins announced the U.S. Forest Service has posted the final ...

Last time this column covered Arizona’s “Five Cs” that underpin our economy. The first, biggest, and most important of the Cs ...

Resolution Copper, a joint venture between the two mining giants, had been in limbo after the Biden administration rescinded ...

The US Forest Service was temporarily barred from transferring land to Rio Tinto Corp. for a copper mine in Arizona Monday ...

The Arizona Department of Environmental Quality will monitor four new water pollutants and enforce stricter limits on three ...