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LEAD Oklah tornado foreman tell _00022819.jpg
LEAD Oklah tornado foreman tell _00022819.jpg

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    See physics behind why buildings crumble

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See physics behind why buildings crumble

CNN's Tom Foreman explains the strength of the tornado in Oklahoma and why some buildings couldn't withstand the force.

See physics behind why buildings crumble

CNN's Tom Foreman explains the strength of the tornado in Oklahoma and why some buildings couldn't withstand the force.