 Mine operator Energy Fuels insists the mine, operational since January, is safe. But researchers at the University of New Mexico have found drinking water could be at risk. For NPR News, I'm Gabriel Pietrazio in Phoenix. This is NPR. Support comes from Condor Airlines. There's still time to explore Europe this summer. Condor offers nonstop flights from Minneapolis to Frankfurt three times weekly with the onboard comfort on Condor's new striped aircraft. Condor.com.