It seems like to do anything with Uranium 238 you have to combine it with the Tiny Pile of Uranium to get Enriched Uranium Nuclear Fuel. You do this by combining 6 Uranium 238 with 3 Tiny PIles of Uranium. That's a 2:1 ratio. But when you put this stuff through the ore washer and centrifuge you get 5 Uranium 238 and 2 Tiny Piles of Uranium. This isn't a 2:1 ratio. This results in piles of Uranium 238 that I have nothing to do with. And that seems to be the only way to get Tiny PIles.
Am I missing something here or is there some other use for 238 besides the Enriched Uranium Nuclear Fuel recipe?