The three Chattanooga firefighters who were taken to the hospital after battling a fire at NA Industries near Amnicola Highway have been treated and released.
One firefighter was taken to Erlanger Medical Center due to possible chemical exposure. Another two had minor complaints and were taken to the hospital for observation, fire department spokesman Bruce Garner said.
The fire was out at 11:35 a.m. and the fire department left the scene around 12:45 p.m.
Officials say the blaze was an acrylic acid fire which briefly evacuated the plant.
Chief Danny Hague with fire department said officials do not believe there was any chemical release off site. No plant employees were injured and none were exposed, he said.
Authorities said there appears to be no threat to the public.
NA Industries, which has been located in Chattanooga for 25 years, produces fine chemicals used as detergent additives and to strengthen cement, according to newspaper archives.