A massive plume of smoke is billowing from the Husky Energy oil refinery in Superior, Wisconsin on Thursday.
An explosion reported at around 10 a.m. led to fires that were initially thought extinguished, only to reignite around noon.
The major emergency incident has seen black smoke erupt from the facility, which can be seen from miles around as well as on weather satellites.
Here's the latest live video from FOX 9.
There have been reports that the sounds of the explosion could be heard as far as 25 miles away, while the incident is clearly visible to those working in downtown Duluth.
Here's a roundup of the videos and images we've seen from the dramatic Thursday incident, including some from the scene showing small explosions continuing at the site.