The "Hard Shock:" The New Madrid Earthquakes.
https://www.youtube.com/watch?v=nj-cYe9yMNU&list=TLPQMTQxMDIwMjPo9RVavlGTAQ&index=19
https://www.youtube.com/watch?v=nj-cYe9yMNU&list=TLPQMTQxMDIwMjPo9RVavlGTAQ&index=19
The "Hard Shock:" The New Madrid Earthquakes.
https://www.youtube.com/watch?v=nj-cYe9yMNU&list=TLPQMTQxMDIwMjPo9RVavlGTAQ&index=19
![](https://i.ytimg.com/vi/nj-cYe9yMNU/hqdefault.jpg)
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