Yea, he got a call from me; I just had to know and I just didn't recall that it was that large, too bad they couldn't put some thickness in those walls. There is a 12" French mortar there which is very large and weighs 4,870 old French pounds, (Livres) which are about 1.079 English pounds, so we would say that it weighs 5,255 Lbs. If the blown up one weighs 1,000 Lbs., maybe, with a lot of luck, it would surprise me greatly.
Tracy