I don't know. I would imagine banks, like the casinos, took their cash, but I don't know how many people would have thought to go clear their safety deposit boxes.... when they only had a few hours to batten down the house and pack up and head out.
Harrah's said on CNBC that they took all their money away.
Bank vaults, especially in larger downtown branches that are older, are pretty significant things and don't yeild to a mob armed with bats and 9mm handguns. A large oxy/acetelene rig, maybe. These idiots couldn't light one.