Yes, but that was purely a Warden training camp. Basing it off of what we know of Camp Kaboom I doubt there were any of what we would consider civilian wizards there so I didn't include it in my death toll guesstimations.

@Aekiel: As fuubar said, it was DB. It was mentioned in Mac's tavern I believe. That scene where Dresden kept thinking of that bottle caps saying.

 

Yeah, I remember it now. Couldn't recall whether it was mentioned there or in Proven Guilty.