Awesome book. Extremely interesting to read parts of our American history that I knew nothing about. Some things I had to shake my head over...events that shouldn't have happened save the arrogance/incompetence of man (Halifax explosion, Teton Dam collapse). I knew about the possibility of a volcanic explosion at Yellowstone, but had no idea of the magnitude possibilities - catastrophic is an understatement. Just a wonderful book that I plan on giving to several relatives who I know will enjoy as much as I did.
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