MARTINTON, Ill. -- Dramatic video showed people running away as a concrete grain bin full of soybeans collapsed Wednesday in Martinton, Illinois, about 65 miles south of Chicago.

The collapse brought down power lines and sent sparks flying.

Emergency crews said they had just cleared the area after someone spotted a crack in the structure in Iroquois County.

No one was hurt, but dozens of homes were left without power, officials said.

The entire power line system must be rebuilt.

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