Officials initially thought they had the fire under control but it has since gotten away from them. Fire fighters say they're going to let the fire burn itself out.
A hazardous materials team is also on the scene. Authorities say there are between 4,000 and 6,000 gallons of oil inside the facility, and there are serious concerns about possible oil leaks.
They have cordoned off a half-mile barrier around the building and restricted air traffic from flying near the site.
Company owner, Albert Couger, says he saw smoke pouring out of the windows when he arrived at the office. The cause of the blaze is still under investigation.