I can practically guarantee that photo has not been edited. I work for a specialist demolition company and we have been involved in similar jobs, but where the machine is sat on the chimney in the above picture we used a radio controlled machine similar to the one in my photo album suspended at the side of the chimney.
Chimneys and the like are often demolished in this way when they are in close proximity to other buildings as above.
I must admit it gets interesting when the wind picks up [:0]
That photo is legit - we got off one of the safety blokes at work a few weeks ago.
I think it's in India or somewhere similar ......... where the health and safety laws are just a little less strict than ours