Nationally, the Pinto Valley Mine ranked fourth among all releasers, while the Freeport Miami smelter ranked 15th. The other three top-ranked Arizona mines finished in the top 30, nationally.

Storms have helped clear the smoke out of Southern Utah from the Forsyth Fire, which has burned more than 13,400 acres near ...

A week after the Forsyth Fire raged through the Pine Valley community and forced people from their homes, residents got some ...

The fact that the chapel has remained untouched by the fire has reportedly given it a new significance for a community that ...

The battle against the fire on southern Utah's Pine Valley Mountains continues Sunday with 400 firefighters now at the scene.

The MV Optimized FS also features a robust life of mine after-tax NPV (8%) of $2.9 billion for the Mantoverde operation on a 100%-basis based on a long-term copper price of $4.10/lb and gold price ...

In 2019, Jetti began deploying its technology commercially at Capstone Copper’s Pinto Valley mine in Arizona. At leaching sites where the firm’s catalyst is being used, Jetti says it has ...

The Capstone Mining Pinto Valley copper mine is seen in this aerial photo taken March 3, 2021, near Miami, Arizona. Charlie Riedel/AP ...

The U.S. Forest Service and U.S. Fish and Wildlife Service allowed a mining company to pump up to 4,000 gallons of groundwater per minute.

Aerial view of the Pinto Valley copper mine, located on private and U.S. national forest lands in Gila County, Ariz. [Photo: Wild Horizon/Universal Images Group/Getty Images] ...