I do not believe that statement.
A fellow I know has a house in southern NH he paid over a million dollars to have built.
His foundation is cracking horribly.
Over 30 years ago, I did a footing and 8 foot concrete walls in our barn that had no heat until 2 years ago.
I used a LOT of rebar, on 4" centers. One small crack I expected over a ledge all the rest still level and no other cracks.
Maybe the homeowner went down to check his basement and discovered existing cracks, maybe the blast helped reveal them.
Yea I was going to post that. I figure it’s someone who already had a cracked foundation looking for a pay day. Tannerite is a fun little product to have some fun with. A friend blew up an old refrigerator one time. Well it actually only blew the doors off it.
Nope. Utter BS reporting, too.
I don’t either. Lots of times during (or right after) using explosives or other construction people feel the vibrations which can be disturbing.
They start looking around their house and discover cracks and complain. Almost all the time those are old cracks but the owner never looked for them before. Often the “new” cracks even have moss inside of them!
Levels that are disturbing to humans are MUCH less than to a concrete foundation.