Tribes seek more details on water use at Arizona copper mine


              FILE - A banner hangs in an encampment belonging to protesters in the Oak Flat area of Superior, Ariz., on June 15, 2015.  A federal agency says an environmental review for a proposed copper mine in Arizona falls short on details about water and the potential impacts of climate change. (AP Photo/Ross D. Franklin, File)
            
              FILE - A view captures the town of Superior, Ariz., with its once-bustling mining operations and derelict smelter tower in the background is pictured on June 15, 2015 . A federal agency says an environmental review for a proposed copper mine in Arizona falls short on details about water and the potential impacts of climate change. (AP Photo/Ross D. Franklin, File)
            
              FILE - Equipment stands around the Resolution Copper Mining area Shaft #9, right, and Shaft #10, left, that awaits the expansion go ahead in Superior, Ariz.,  June 15, 2015. A federal agency says an environmental review for a proposed copper mine in Arizona falls short on details about water and the potential impacts of climate change. (AP Photo/Ross D. Franklin, File)
Tribes seek more details on water use at Arizona copper mine