Federal and state governments are helping Energy Fuels boost its processing of uranium and rare earth elements, but the company has a checkered past with tribes and communities in the Four Corners region.By Wyatt Myskow, Maya McDanielA monitoring well at the site of a uranium mine operating in a national monument nine miles from the Grand Canyon’s south rim has been detecting rising arsenic levels since 2025. Four times, those arsenic levels exceeded the Arizona well’s permitted alert levels.