One person has been injured following a chemical spill in Mayes County.
It happened just after 3 p.m. Thursday at Pryor Chemical and it has been contained.
Mayes County emergency officials said a mechanic was working when he was hit in the face with anhydrous ammonia.
The area is now blocked off by caution tape.
The company said they're doing an internal investigation into what caused the accident.
Pryor Chemical never evacuated its employees but a large company across the street sent theirs home.
"We were told to go northbound because the prevailing winds were southbound and the ammonia would be collecting in that direction," said Terry Titsworth.
Titsworth said his employer, RAE Corporation, has an emergency response team that's in charge of keeping an eye on emergencies at the fertilizer plant.
"In this case, they determined that it was blowing somewhat towards our direction," said Titsworth.