Spotlight on American Rare Earths, page-2531

Sanderson: It’s a wonderful time for us because a few months back, we issued an initial resource evaluation of our primary opportunity in Halleck Creek, Wyoming. And that deposit is truly a strategic asset for the United States of America. It’s huge. It’s 1.4 billion tons of total rare earth, and that equates down to after processing and separation, more or less, a million tons of that neodymium and praseodymium that we were discussing earlier, so two of the key materials necessary. We’ve just completed a new round of drilling to take our exploration even deeper because one of the wonderful things about this deposit is it’s very consistent in the distribution of the rare earths to depth, as far down as we went on our first drilling round, which was 150 meters. So this drilling round, we’re going down to 300 meters, and we’re eager to see the returns from that.“Ultrasound separation is one that would use essentially the same technology that is used in a doctor’s office... to essentially excite the desired molecules to drop out of a solution.”—Melissa Sanderson, American Rare EarthsThe other thing that is highly prospective about this deposit is it has virtually none of those two penalty elements, uranium and thorium, which means that in some ways, it’s a lot easier to process and certainly will be less costly because we won’t have to engage in having separate storage facilities to handle those materials. And we also, on the permitting side, probably will not need to get a permit from the nuclear regulatory agency so long as when we go through our processing, we don’t find that the materials concentrate. And at the moment, they are not. So those are huge benefits for us. QUOTE
We are very lucky to have Melissa Sanderson on our board to guide us through all the US Government initiatives ahead IMO

https://spectrum.ieee.org/rare-earth-elements-2666461932