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Chicago firefighters battled two gas-fed warehouse fires that burned for several hours.
The flames intensified as the gas could not be shut off right away, ABC7 reported.
By Sunday morning, at least two large walls at the metal recycling facility collapsed, making the debris and destruction more visible.
No injuries were reported.
The cause remains under investigation.
Content curated and written by Firehouse editorial staff, including Susan Nicol, Peter Matthews, Ryan Baker and Rich Dzierwa.