There were no reported injuries to firefighters or emergency personnel.
Worton Road, which also is state Route 297, was closed to through traffic for a couple of hours.
The employee was able to escape the building and call 911.
Manufacturing started at the Worton site in 1995. Currently there are 35 employees, Toevs said.
The “white line” was not operating Monday and Tuesday due to cleanup.
Also to be calculated is the cost of cleanup.
Deputy Chief State Fire Marshal Matt Stevens said his office was not called out to the incident.