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Originally posted by Foxe
Devised an idea.
Laid on table for those whom want to try.
No legality to my name for just idea posts.
Seismic Guns fired into the ground. P and S waves bounce off the bunkers or any deep foundations. Triangulation would bring forth aproximated depth, size, and strength of these assumed bunkers.
This is a doable and not out-landish idea, and can be done on public property.
To quote 'privacy law', if you are on public property, the Government can NOT order you to cease filming, recording, or the likes. This can be done on public property...