Seven contractors are suing Husky Energy Inc. following an April 26 explosion and fire that occurred at the company's 50,000 barrel-per-day Superior Refinery, according to a Sept. 5 report from the Twin Cities Pioneer Press.
The lawsuit, filed in Wisconsin's Douglas County Circuit Court, alleges the contractors were told to return to work after hearing a "strange knocking noise" and seeing "plaintiffs and other employees [rushing] out of the Refinery, fearing that the refinery was unsafe."
The explosion followed 30 to 40 minutes after the contractors returned to work, leading 36 people to seek medical attention, including 11 workers that sustained injuries reportable to the U.S. Occupational Safety and Health Administration.
A U.S. government investigation of the disaster has narrowed to the refinery's fluid catalytic cracking unit.
Husky Energy told the Pioneer Press, "We are cooperating fully with those agencies investigating the incident," but declined to comment on the ongoing litigation.
In addition to Husky Energy, the lawsuit also names refinery manager Kollin Schade and safety and security manager John O'Brien, who were overseeing the contractors' work at the time of the disaster, as defendants, as well as former refinery owner Calumet Specialty Products Partners LP.