ArcelorMittal... 24 hours a day, 7 days a week and 365 days a year. Would you expect anything less from the world's largest steel producer? At the East Chicago plant, we see their pair of GP15-1's (#'s 418 and 419) bringing in a string of coke empties, the leader being of former Conrail heritage and the trailer being former SLSF (Frisco). Nestled right on the shores of Lake Michigan, ArcelorMittal has produced 92.5 million metric tonnes of crude steel since 2018.