Regolith Excavation Challenge Video

I ran across another Regolith Excavation Challenge video at GaiaSelene, in their Moon Colony Videos section. It's very well done, giving a good view of the competitors' machines, and explaining lots of details about the challenge, the rationales for the rules, and the difficulties the challengers face with things like the lunar simulant. It's pretty comprehesive, at about 7.5 minutes.