MILLINGTON, TN-Two employees at Pollution Control Industries were injured Thursday after a fire started at the plant on Victory Lane near Fite Road in Millington.
Both were taken to The Regional Medical Center, one by helicopter.
Just after 4:30 p.m., company officials reported a fire had started in an area where flammable chemicals are stored.
By the time firefighters arrived, thick, black smoke could be seen for several miles.
Shelby County firefighters were assisted by Memphis and Millington Fire Departments.
It took about an hour for firefighters to get the fire under control.
Two firefighters were taken to the hospital and treated for heat exhaustion and one transported for a shoulder injury.
Fire investigators are talking with company officials now to find out what might have led to the blaze.