[Citroënbender]

I need to add an update, the structure was grossly inconsistent in thickness to a maximum of 700mm reinforced concrete on two sides, and a bare minimum of 200mm. Farmed out the heavy cutting to a sawing company who underestimated it despite an inspection before starting. They had a ring saw with about 320mm cut depth, this was enough when cutting from both sides to crack the remaining small fillet of concrete.

Of course this changed the waste disposal methodology - as I was paying by the metre for contractor cutting, I had it sawn into the biggest chunks we could push over as a team of three with two crowbars. The caper following was endless days on a Kango breaking it into chunks and gravel.