system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is the procedure for when a demolition fails?

When a building is demolished and the initial explosives go off but fail to collapse the structure, what happens next? 

Are there secondary explosives? Surely it's not safe to approach the building once those first explosives have been detonated.
gpt
Controlled implosions aren't just about bringing a building down...its about bringing it down so the debris goes where you want it to.

The actual amount of explosive force needed to bring a structure down is actually low (because of gravity) So if there is a screw up in the implosion process, the building is still coming down...just in a really unsafe way.