In the early morning of December 30, local time, a freight train belonging to the US rail transport company CSX derailed near the border between Kentucky and Tennessee in the US. About 30 cars derailed. One section of the car containing molten sulfur caught fire, causing the local area to issue a local safe-haven order at one point. The accident occurred in a rural area near Trenton, Kentucky. The emergency department said the burning sulfur released toxic smoke, and firefighters then brought the fire under control. Authorities have confirmed that the air quality has been restored to safety and that safe-haven measures have been lifted. Currently, the cause of the accident is still under investigation, and there are no reports of casualties.

In the early morning of December 30, local time, a freight train belonging to the US rail transport company CSX derailed near the border between Kentucky and Tennessee in the US. About 30 cars derailed. One section of the car containing molten sulfur caught fire, causing the local area to issue a local safe-haven order at one point. The accident occurred in a rural area near Trenton, Kentucky. The emergency department said the burning sulfur released toxic smoke, and firefighters then brought the fire under control. Authorities have confirmed that the air quality has been restored to safety and that safe-haven measures have been lifted. Currently, the cause of the accident is still under investigation, and there are no reports of casualties.