U.S. civilian nuclear power reactors purchased a total of 57 million pounds of uranium in 2013 at a weighted-average price of $51.99 per pound, but only about 9.7 million pounds of that was sourced domestically. However, uranium produced domestically has been getting higher prices at $56.37 per pound compared to $51.13 per pound for foreign material. And Wyoming is the top producer of uranium in the country with the largest known reserves in the U.S.