The standard D&D spell to help carry large weights with magic is Tenser's Floating Disk. It wasn't used in either situation, and from the name I think it is wizard-only (i.e. not clerical). Now, I am not well versed in splatbook magic, but D&D is not too expansive in non-fighting spells, in general. Players are more interested in ways to get rid of the monsters guarding the piles of treasure than in the mechanics of moving said treasure afterwards.
Grey Wolf