Uranium mining in the United States produced 173,875 pounds (78.9 tonnes) of U3O8 in 2019, 88% lower than the 2018 production of 1,447,945 pounds (656.8 tonnes) of U3O8 and the lowest US annual production since 1948. The 2019 production represents 0.3% of the anticipated uranium fuel requirements of the US's nuclear power reactors for the year. Production came from five in-situ leaching plants in Nebraska and Wyoming (Crow Butte, Lost Creek Project, Ross CPP, North Butte, and Smith Ranch-Highland), and one underground mine.