[URGENT] BigBrother Chest Contents [URGENT]

How do I check/ is there a way to check WHAT the users are taking out of the chests, not just that they took stuff out of the chests? I'm running the 1000 build of bukkit and the most recent bigbrother.
There were a ton of diamonds and gold ingots taken, along with some coal, and the server is down until I solve this (I don't want whoever did this to run freely). PLEASE help!