Crews arrived to find flames shooting out of some tall silos on the plant site on Gazin around 10:30pm. Fire officials tell us the company had some plastic debris burning, but never tapped the debris out. That byproduct then spread to one of the plant's buildings.
"The debris that was outside the building rolled on into the structure and caught part of it on fire," said District Chief Mike Phillips with the Houston Fire Department.
No chemicals were released into the air. Residents in the area were never in any danger.