8/2/2018
Superior, Wisconsin, August 2, 2018: Today the U.S. Chemical Safety Board (CSB) released a factual update into its ongoing investigation of the April 26, 2018, explosion and subsequent fires at the Husky Superior Refinery in Superior, Wisconsin. The initial explosion occurred in the refinery’s Fluid Catalytic Cracking Unit (FCCU) at approximately 10:00 am while the refinery was shutting down the FCCU for periodic maintenance and inspection.
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