I have a set of permanent, steel bollards set into a small concrete slab that I need to remove, in order make room to build a small structure. The steel is 1/4" thick, and the bollards themselves are open on top and filled to the rim with concrete.
I'm looking for suggestions on the best way (cheapest + quickest) to accomplish this. At the moment, the best idea I have come up with is using a blowtorch and sledgehammer.
For those of you who need a picture, this attached picture is about as close to what I'm dealing with as I can find.
Thanks for your help.