The Resolution Copper mine in Arizona plans to use a large amount of groundwater, potentially jeopardizing the planned Superstition Vistas development and its water supply. Arizona law allows mining ...

President Donald Trump’s plan to slap a 50% tariff on copper imports is exposing the tangled web of regulations that have long stifled America’s ability to mine and refine its critical minerals. While ...

HOUSTON, March 24 (Reuters) - Rio Tinto aims to open Arizona's Resolution Copper mine ⁠by ⁠the mid-2030s but may need to export some of ⁠its copper concentrate due to the challenging economics of ...

The spokesperson for Resolution Copper argued an independent review of the project by the U.S. Forest Service "included extensive consultation and collaboration with numerous Native American Tribes, ...

In a news release issued March 16, the U.S. Department of Agriculture’s Forest Service says it has completed the Southeast Arizona Land Exchange and issued the final record of decision for the ...

TUCSON, Ariz.— A new public opinion poll released today by the Center for Biological Diversity shows that 67% of likely Arizona voters oppose the proposed Resolution Copper mine, which would destroy ...

A U.S. appeals court has temporarily blocked the transfer of federal forest land in Arizona to a pair of international companies that plan to mine one of the largest copper deposits in North America.

A federal judge will hear arguments in a case over a disputed land exchange that would allow construction of a huge copper mine.

Arizona is running out of water, yet we’re preparing to hand over hundreds of billions of gallons to a single foreign-owned copper mine. The proposed Resolution Copper project, a joint venture of ...