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

Hudbay Minerals Inc. still needs to complete a final feasibility study and find a financial partner before work begins on the $1.3 billion project in the Santa Rita Mountains.

The westbound interstate was closed between Exit 195 for Copper Mountain and Exit 180 for Vail, CDOT officials said, but had ...

If left unchecked, Resolution Copper’s proposed mine at Oak Flat will worsen the degradation of ... director Sierra Club’s Grand Canyon (Arizona) Chapter. “The Arizona Department of Environmental ...

Resolution Copper’s proposed mine would discharge copper and other pollutants into ... director of Sierra Club’s Grand Canyon Arizona Chapter. “We need EPA to act now to protect this important stream ...

The goal of several state and national parks is to conserve, maintain, and highlight the distinctive qualities of the Copper ...

Home to the Grand ... Canyon, Williams, is one of the best desert towns in Arizona. It's surrounded by breathtaking mountain ...