If a nuclear waste dump
were found, it should be possible to date both the age of
the fuel and the time that it was discarded. Nuclear
material left on the surface of the moon would eventually
become buried, but for a long time it would still produce a
distinctive signature as a radiation source (assuming it
was unshielded) that could readily be detected from orbit
on a future mission suitably equipped to search for
gamma rays. However, it is unlikely that the LRO could
assist in searching for nuclear waste, even if it is not
buried, given that it would probably be small and
inconspicuous.