CHICAGO (AP) — A company involved in legal skirmishes last year over piles of petroleum coke in Chicago has sold its facility, and a second company has been fined $50,000 for violating an order to stop handling coke and coal products, city officials said Thursday.

Indiana-based Beemsterboer Slag Corp. sold its site on the city’s southeast side earlier this month, company President Alan Beemsterboer said. The company in December agreed to remove piles of petcoke, a powdery black byproduct of oil refining, after the state sued the company for air quality and permit violations.