Firefighters were sent this morning to the Consol Energy plant in East Finley Township, Washington County.
In a social media post, the Claysville Volunteer Fire Department says it's a chemical fire at the Bailey Omni Plant in the 300 block of Enon Church Road.
The fire broke out around 6:20 a.m. and fire crews expect to be on scene for an extended period.
Traffic in the area is expected to remain disrupted.