Mmmm, appreciate it Tortuga, but I'll decline. I don't think a thermal lance is an oxy acetylene torch. It might be lit by one. And I think it can cut steel and concrete, from what I glean from my initial research. Yes, noise will be a problem, but now I'm considering a diamond core driller for the building's footings, then continue with the diamond drill until it can't handle the vault walls. Then, I'll use the thermal lance to complete entry to the vault. Explosives, ChrisK? Maybe, but probably not. I have an actual bank in London and the building next to it. The file gives you some idea of the logistics
The Vault.pdf
The Vault.pdf