Just some information on input amounts for some key products:
1) Uranium fuel cell: (Approx 125 uranium ore + 41 Fluorite) OR 1.08 Used Mox Fuel Cells
2) Mox fuel cell: Approx 1.7k Uranium Ore + (1.4 Used Mox fuel cells OR 7 Used Uranium Fuel Cells)
3) Uranium-235: Approx 2.5k Uranium Ore
