Chicago police and fire responded Tuesday to a partial building collapse at a Morton Salt storage facility on 1301 N. Elston. A wall of the building collapsed, and a mountain of salt poured onto several nearby vehicles. Fire officials said workers at the facility apparently piled the salt higher than they were supposed to, and the resulting pressure caused the south wall to collapse. The building was last inspected by the city in March of 2014. It has an outstanding violation for failure to maintain the roof in sound condition. There were no reported injuries. The salt buried at least 11 cars next door in a McGrath Acura dealership lot. Click here for a photo gallery of the collapse.