Well, of course….they’re dumping pet coke in Chicago…and Whiting, Indiana….

“Petcoke tends to have higher metal content than coal – like nickel, vanadium and selenium,” added Geertsma. “Coal can have higher mercury content, so they’re both bad in terms of toxic heavy metals content.”

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The report says that Canadian exports of petcoke to the U.S. more than doubled between 2010 and 2012, and BP Whiting’s expansion will triple its petcoke production to 6,000 tons per day.

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And I got my answer to where the petcoke piles were moved to–Ohio.