This video is from Chicago where shredded rubber tires caught fire Friday afternoon.
Just look at that thick, black smoke filling the air. You can see crews on the scene trying to contain the fire.
The Chicago Fire Department is monitoring the air quality --- which they say is not hazardous right now.
The shredded rubber is stored at the property so it can be be shipped by barges elsewhere and used as solid fuel.
Officials say the material burns strong and quick.
So far, no injuries have been reported.