State police said 15 people were taken to a hospital after an explosion released a cloud of hydrochloric acid gas at a southern Indiana engine plant.
State police spokesman Chad Dick said the accident was reported about 2:30 p.m. Thursday at the Jasper Engines & Transmissions plant in Carefree, about 35 miles west of Louisville, Kentucky.
No fatalities were reported. The injuries were not life-threatening, Dick said.
Dick said workers were mixing chemicals when a cloud of hydrochloric acid gas was created and people were evacuated from the plant.
A hazardous materials team from Louisville was en route to the scene.
Jasper Engines employs about 1,600 people at locations in Jasper and Crawford County. The company refurbishes engines and transmissions.