Austrilia is #1 by reserves, Kazakhstan is #2 and Canada is #3. US as of 2012 buys about 25% of it from Canada and the rest from a variety of places. https://

Austrilia is #1 by reserves, Kazakhstan is #2 and Canada is #3. US as of 2012 buys about 25% of it from Canada and the rest from a variety of places. https://en.wikipedia.org/wiki/Nuclear_power_in_the_United_States#/media/File:US_Uranium_Imports_2012.png https://en.wikipedia.org/wiki/Nuclear_power_in_the_United_St... https://en.wikipedia.org/wiki/List_of_countries_by_uranium_reserves https://en.wikipedia.org/wiki/List_of_countries_by_uranium_r...