Jim Paine, the Mayor of Superior, Wis., says all indications are that the refinery site is safe and stable, and that the air quality is normal.
All patients have been released, except one listed in good condition Friday morning. The weather service said winds were expected to weaken Thursday evening and eventually shift toward Lake Superior.
An evacuation order remains in Superior, WI following a fire at the Husky Energy refinery caused by an explosion at the plant on Thursday.
It was unclear how severe the reported injuries were and exactly how many of those people were transported to the hospital for treatment. Two fires actually broke out at the facility, and there were about a dozen explosions.
The Chicago Tribune reports that the Superior refinery had been fined by federal authorities three years ago, when it was still owned by Calumet Specialty Products Partners, which Husky Energy bought it from in 2017 for US$490 million.
The EPA's air monitoring program hasn't turned up anything more than trace amounts of toxic chemicals, the EPA's Morrison said.
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Panger said the fire was out by 11:20 a.m., although smoke could still be seen rising from the plant.
In a Friday press conference, Paine said the fire is under control and the air quality is being monitored but poses no threat as of now to residents.
"I was sitting right here", said Bill Clark, a cafe regular seated at the counter, "when that thing went ka-boom". "That was the nature of the evacuation, ultimately". If you were here, you saw the gridlock throughout the city of Superior.
"So while we were trying to be transparent, we were trying to truly protect the public as well", Paine said.
The fire was contained Thursday at 6:42 p.m. "So yes, it was important to be transparent about the risk to the public and what we were dealing with, but public safety comes first", he said. There are no deaths reported, and all workers have been accounted for.
Husky Energy has set up a hotline to offer assistance for anyone affected by the fire at the refinery, whether they need a place to stay, or help with food, transportation, or other evacuation issues or concerns. Refinery manager Kollin Schade said the smoke was from burning asphalt that was so hot that firefighters were unable to attack the fire to try to put it out.