The Supreme Court on Monday rejected an Arizona tribe’s request to halt a underground copper mine from polluting an ...

The lawsuit was filed to protect Queen Creek from Resolution Copper’s proposed mine, which would discharge copper and other pollutants into the important desert stream. The mining operation would also ...

SUPERIOR, Ariz.— Conservation groups filed a formal notice of intent to sue the U.S. Environmental Protection Agency today in response to the Arizona Department of Environmental Quality’s decades-long ...