CHICAGO

Deal Requires Removal Of Chicago 'Petcoke' Piles

FILE - In this Oct. 25, 2013 file photo, the Willis Tower in downtown Chicago provides a backdrop to a huge mound of petroleu
FILE - In this Oct. 25, 2013 file photo, the Willis Tower in downtown Chicago provides a backdrop to a huge mound of petroleum coke, or petcoke, in the a residential area in the city. Chicago Mayor Rahm Emanuel and Illinois Attorney General Lisa Madigan announced a deal Thursday, Dec. 19, 2013, with an Indiana company that will require it to remove huge black piles of petroleum coke from the city's Southeast Side and accept no other shipments. The material is a powdery byproduct of oil refining that's been accumulating along Midwest shipping channels and sparking health and environmental concerns. (AP Photo/Charles Rex Arbogast, File)

Mayor Rahm Emanuel's office says Chicago and state officials have reached a deal with an Indiana company that will require it to remove huge black piles of petroleum coke from the city's Southeast Side.

Known as "petcoke," the material is a powdery byproduct of oil refining that's been accumulating along Midwest shipping channels and sparking health and environmental concerns.

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