reacting spent nuclear fuel in a voloxidation vessel with {HEAD ~ an oxidizing gas} comprising {TAIL ~ nitrogen dioxide} and oxygen for a period sufficient to generate a solid oxidation product of said spent nuclear fuel, wherein said reacting step comprises: 
reacting spent nuclear fuel in a voloxidation vessel with { HEAD ~ an oxidizing gas } comprising { TAIL ~ nitrogen dioxide } and oxygen for a period sufficient to generate a solid oxidation product of said spent nuclear fuel , wherein said reacting step comprises :
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH