Spanning over 60,000 acres, the Morenci copper mine in eastern Arizona — one of the largest-open-pit mines in the world — produces hundreds of millions of tons of copper ore each year. But the steep ...

One person is dead after an accident at a mine in southeastern Arizona on July 6, according to federal mine safety officials. At about 9:10 a.m., the incident occurred during surface copper mining ...

Injection wells are essential in mining copper for electronics, attempting carbon capture, and managing Arizona's water supplies.

Preview this article 1 min The expansion by Freeport-McMoRan would increase copper production by 200 to 250 million pounds per year. A final investment decision is expected by year-end. 40 Under 40 ...

Add Yahoo as a preferred source to see more of our stories on Google. Mine shafts nine, right, and 10, left, tower over the Resolution Copper Mining Company facility, on June 9, 2023, in Miami, Ariz.

Add Yahoo as a preferred source to see more of our stories on Google. A rainbow arches over Oak Flat, an Apache site, in October 2023. (Molly Peters) President Trump this week threw his full support ...

BHP (BHP) said Friday it signed a non-binding letter of intent with Faraday Copper (CPPKF) to evaluate restarting the San Manuel copper mine in Arizona and combining it with Faraday's nearby Copper ...

Twenty-one of Arizona's 22 tribes oppose Resolution Copper. Here's why the Oak Flat mine will harm Arizona's water, land and future for generations.

Arizona Sonoran Copper shares surged Monday morning after Hudbay Minerals said it would acquire the company in full. Shares of Arizona Sonoran rose 21% to 8.69 Canadian dollars ($6.37), hitting a ...