Here's the reactor. It's got a lot of graphite in the core. The green fluid is the fuel salt. So this is the material that's undergoing nuclear fission. The uranium in this is undergoing nuclear fission and generating energy. As you can see the two regions here, there's the fuel salt region and surrounding it and kind of the turquoise blue is the blanket salt region. In the blanket salt, protectinium is formed from neutron absorption and thorium in the blanket. That blanket salt proceeds to a reductive extraction column where it's contacted with metallic business that will remove protectinium in any uranium that's present there and return cleaned up blanket salt back to the reactor vessel. That metallic business stream then proceeds through a series of additional reductive extraction cells and electrolytic cells before ending up in a decay tank. In the decay tank, we give the protectinium time to decay to uranium 233 and actually there's several other protectinium isotopes in there as well, 231 and 232. 232 will also decay to uranium 232. So uranium 232 is still present, even the decay tank here because of its formation in the blanket. So, protectinium goes into the decay salt, decayed uranium comes out and this is also where we add thorium tetrafluid as a makeup material. This is where thorium actually enters the chemical processing system. As uranium begins to grow in in the in the decay salt though, it is removed through fluorination and then it's added to a stream and let me pick up from the fuel salt's perspective. Fuel salt is taken out and it is fluorinated also to remove uranium and other gaseous hexafluoride products. Those two streams are joined at that point. The remaining fuel salt now stripped of its uranium goes to another reductive extraction column where metallic bismuth is used to remove lanthanides and long-leaf-vision products. And then that stream is returned to a reductive extraction unit where the UF6, the fuel salt, and hydrogen gas is used to reduce UF6 back to UF4 bringing it back into solution and essentially refueling the fuel salt and sending it back to the reactor vessel. The HF that is produced by this reaction goes to an electrolytic cell where it is split back into H2 which is used again for the reduction and F2 which is used for the fluorination steps. To all of this forms a close cycle.