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 U.S. district judge on Friday denied the latest request by a Native American tribe, environmentalists and other plaintiffs to stop the federal government from transferring land in Arizona for a ...

Mitsubishi is shelling out nearly $600 million as a joint venture partner for an expanded copper mine project in Arizona. The Copper World mine – a project from Toronto-based Hudbay Minerals – is an ...

To continue reading this content, please enable JavaScript in your browser settings and refresh this page. Preview this article 1 min Mitsubishi is putting up nearly ...

Alternatively, home sales over $1 million increased 10% year-over-year, according to Sindy Ready, past president of Arizona Realtors. Kylee looks at the housing market. Mesa could be the first city in ...

TUCSON, AZ (AZFamily) — Copper mining firm Rio Tinto is partnering with Amazon to provide copper from a southern Arizona mine for the tech giant’s next wave of U.S. data centers. Rio Tinto explained ...

Amazon Web Services is the first customer for a re-opened mine in Arizona powered by microorganisms. Amazon Web Services is the first customer for a re-opened mine in Arizona powered by ...

Amazon’s push to build massive artificial-intelligence data centers is now extending into Arizona, where a recently restarted copper mine is supplying industrial metal seen as increasingly critical to ...

Arizona Sonoran Copper said it plans to begin talks with Rio Tinto-backed Nuton to end a partnership agreement early and fully take on the project in Arizona. Arizona Sonoran said Monday that it plans ...

The president exempted a copper smelter in Arizona from air-quality rules. An E.P.A. official guided the company that sought the exemption, emails show. The president exempted a copper smelter in ...

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The decade-long legal saga over Resolution Copper’s planned copper mine in Superior has a new twist with involvement from an Arizona politician. Arizona’s newest member of Congress, Rep. Adelita ...