Freeport-McMoRan, Rio Tinto and BHP are among the miners testing sulfide leaching as tariff threats send copper prices ...

“It’s certainly better to not have the light at all, especially during peak migration times ... public land to Resolution ...

Australian minerals exploration company Helix Resources has entered conditional binding agreements with Centric Minerals Management and White Hills Exploration (vendors) to acquire the White Hills ...

TUCSON, Ariz.— Environmental and community groups have appealed the Arizona Department of Environmental Quality’s decision to grant an air pollution permit to the Copper World mine, the final permit ...

TUSCON, Ariz.— Following a petition and legal action from the Center for Biological Diversity, the U.S. Fish and Wildlife Service announced today that Bartram’s stonecrop, a succulent found in ...

Redhawk Copper wants to mine extra copper from an area near the San Pedro River, a project that would include six open pit mines and operate for 32 years. One of the areas that could be affected ...