Fire officials are investigating what caused coal igniting inside a mill at the Essroc Cement plant in Lower Nazareth Township.
The fire ignited on 10 January as 10 employees were working at the plant. It was controlled within minutes by firefighters from the Hecktown Volunteer Fire Company.
Firefighters were at the scene for over two hours ensuring all the electricity had been turned off and the plant was secured.
There were no reported injuries to Essroc employees or firefighters. Officials remained on site the following day estimating how much damage the mill sustained during the blaze.
Edited from sources by Joseph Green. Sources: The Morning Call, LeHigh Valley Live