Rosemont Copper Mine

A federal appeals court has ruled that regulators were wrong to conclude that parts of Pima County slated for a copper mine are critical to the preservation of endangered jaguars.

A planned bill would essentially counteract the 9th Circuit ruling in an Arizona copper mining case, which blocked the Rosemont copper mine last year because the company hadn't proven it had mineral rights on the adjacent land where the waste rock was to be buried.

Hudbay Minerals Inc. says it may appeal a court ruling against its planned use of forest land to store waste rock from a proposed new copper mine but that it also will continue planning for a nearby related project that would include using private land.

An appeals court Thursday upheld a judge’s ruling overturning a federal agency’s approval of a Toronto-based company’s plan for a new open-pit copper mine in southeastern Arizona.

A Hudbay Minerals Inc. subsidiary plans to begin clearing and grading this month on the southern Arizona site for a planned new mine with five open pits.

The U.S. Forest Service plans to begin a controversial land swap Friday that’ll pave the way for a copper mine in central Arizona that'll be one of the…

A federal judge in Tucson has overturned the U.S. Fish and Wildlife Service’s approval of plans for a new copper mine in southeastern Arizona.The $1.9…

A federal judge has declined to reconsider a ruling barring the construction of an Arizona open-pit copper mine.The Arizona Daily Star reports that U.S.…

Experts say a federal court ruling against a proposed southern Arizona mining project is expected to have national repercussions if upheld by higher…