Calumet River

August 19, 2016, 5am PDT
Chicago Mayor Rah Emanuel and the Metropolitan Planning Council announced the "Our Great Rivers" plan this week.
Chicago Tribune
December 28, 2013, 11am PST
Petroleum coke or petcoke, similar to coal, is a nasty though salable byproduct of the oil refining process. Produced from refining tar sands crude in Indiana refineries, it is stored in huge piles in Chicago, blowing dust in the Southeast Side.
NPR Morning Edition