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andrewflnr
Air waves having any effect on ground waves boggles my mind. How can they possibly have high enough pressure to matter without apocalyptic intensity?
d-sc
The detectors are extremely sensitive. As the article stated, a cow walking by or leaves rustling in the wind can be picked up.
vondur
Interesting. My parents we born and grew up about 20 miles from Mcalester. My Aunt worked in that munitions plant during WW2.