Having read up more on this, it looks like there are 2 active uranium mines in AZ, and one in each of NE, UT, WY. Industry people seem to think leaching is the

Having read up more on this, it looks like there are 2 active uranium mines in AZ, and one in each of NE, UT, WY. Industry people seem to think leaching is the cleanest way to mine uranium. Older techniques created radioactive dust.