/emerson-exchange/b/weblog/posts/building-a-world-class-control-system-one-step-at-a-timeSince it opened in the mid-1970s, Ergon, Inc.’s refinery in Vicksburg, Mississippi, has expanded from a single sweet crude processing unit into a versatile facility capable of producing 25,000 barrels a day of naphtha, diesel, and petrochemical...en-USTelligent Community 13