In December, the Environmental Protection Agency warned that a uranium mill in southern Utah was in violation of environmental guidelines.
Conservationists have found little has changed since then.
The EPA found that the mill operator had failed to cover a tailings cell with enough water, which helps reduce radon emissions into the atmosphere.
The agency wrote that the condition was unacceptable. Last week, representatives from the Grand Canyon Trust and Ute Mountain Ute Tribe found even less water in the impoundment...