What to do... what to do... with the inches deep layer of ultra-rare tritium covering the surface. A critical component for sustained and controlled fusion reactions.
Tritium is easy to come by here on earth. What is available from the moon is He3, which is part of an "easy" to initiate fusion reaction which is aneutronic:
"3He can be used in fusion reactions by either of the reactions 2H + 3He → 4He + 1p + 18.3 MeV, or 3He + 3He → 4He + 2 1p+ 12.86 MeV." (from Wikipedia).