One of the charges was deemed "very serious," the highest of three offense levels, for noncompliance dating back to a 2014 ...

A planned copper mine could alter Tucson's natural skyline, but in the 'Copper State,' mining interests still hold sway.

Nearly 20 years after it was first proposed to state and federal regulators, the project formerly known as PolyMet Mining — ...

A landmark project to extract valuable copper from massive stockpiles of tailings — a legacy of state-owned Oman Mining ...

Cloncurry’s mayor has warned his region has been impacted by a total 400 jobs after three separate junior copper mines in ...

The Michigan Senate has adjourned for the year without taking action on a proposed $50 million grant for the controversial Copperwood mining project in Gogebic County just outside Porcupine Mountains ...

With a personal investment of $225 million on the line, much is at stake for Rob McEwen with the success of McEwen Copper’s ...

Members of the House Appropriations Committee faced an uproar Wednesday after voting to approve subsidies for a bundle of ...

This is the second story in a three-part series about the proposed expansion of the Copper Mountain Mine. Part one can be found here.

Facing questions from sm?lqmíx community members about mine contamination in a Similkameen Valley creek, a senior ...

Chile’s environmental regulator SMA has filed four charges against the Los Bronces copper mine, controlled by Anglo American, ...