PEKIN - Part of the Enviro-Safe building came down on Wednesday, but rescue workers are still trying to figure out what led to an explosion.
The blast occurred at the downtown bottling plant around 3:00 P.M.
The explosion knocked out a corner of the brick building, as well as part of the roof.
Residents said it sounded like a huge gust of air, mixed with the sound of a car crash.
Four people were taken to the hospital. Two were sent to the burn unit at Rockford St. Anthony's.
Randy Price, the owner of Enviro-Safe Refrigerants, said, "The people injured are doing fine. The guy who got burnt the worst, he swallowed and slept through the night. The wives say that they are doing well. I'm glad nobody got hurt worse or got killed here or anything."
Price said building experts are determining if the structure is stable enough to rebuild on.
He said the warehouse part of the building is fine and is suitable for employees to work in.