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Report: Wisconsin refinery knew about issues before blast

FILE--In this April 26, 2018, aerial file image shows smoke rising from the Husky Energy oil...
FILE--In this April 26, 2018, aerial file image shows smoke rising from the Husky Energy oil refinery after an explosion at the plant in Superior, Wis. Duluth City Council is taking steps to ensure the safety of its residents following the reconstruction of a refinery that exploded in April in neighboring Superior, Wisconsin. Flying shrapnel in the Husky Energy oil refinery explosion just missed a tank of hydrogen fluoride, which can be deadly if inhaled. The Minnesota Public Radio News reports that the council will vote Monday on a resolution asking the Environmental Protection Agency to examine hydrogen fluoride usage at the rebuilt Husky refinery. (AP, File)(AP)
Published: May. 3, 2022 at 4:49 PM CDT
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SUPERIOR, Wis. (AP) — Wisconsin Public Radio reports that officials at the Superior oil refinery knew about equipment issues years before a 2018 explosion, citing hundreds of pages of documents from the Occupational Safety and Health Administration.

WPR secured nearly 1,300 pages of documents from OSHA that shed new light on what those officials knew in the days leading up to the explosion at the refinery, then owned by Husky Energy Inc., as well as what equipment issues they were aware of years earlier.

They include problems with a critical valve malfunctioning days before the explosion and documented erosion on that key piece of equipment dating back to 2008.

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