CHICAGO
12/19/2013 05:04 pm ET

Deal Requires Removal Of Chicago 'Petcoke' Piles

ASSOCIATED PRESS

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.

Read more on NBC Chicago

CONVERSATIONS