Congratulations Are Being Heard Throughout the Black Hills! The "Uranium Mining is a Nuisance" initiative in Fall River County is working. One Company Down, One to Go. On December 3, Pegasus Resources Inc., a Canadian company, that wanted to mine uranium in the southern Black Hills ended its agreement with Cowboy Exploration and Development. This … Continue reading Uranium Mining Company Retreats from Fall River County. One Company Down, One to Go!