Employees smelled an ammonia leak Monday at a Lexington business off Old Frankfort Pike and called firefighters for help, police said.
3M Ceradyne on Laco Drive also has alarms that go off when chemicals are detected, and the alarms worked properly, said plant manager Rob Hoffman and Maj. Rob Larkin, Lexington police special operations commander. Employees evacuated the affected building.
Several fire department units, including hazardous materials specialists, responded.
The leak was found and shut off and the building was ventilated, Larkin said.
There were no injuries, Larkin said. Workers were expected to be able to return to work in the building later Monday.