Crews are expected to remain on the scene of a Rutherford County concrete facility Friday night after a fire broke out. Upon their arrival around 4 p.m., crews reported the Smyrna Ready Mix, located on Hickory Grove Road, was fully engulfed. Firefighters had a difficult time battling the fire because there was not a close water source and hazardous materials were involved. HAZMAT is expected to visit the site Saturday. A few employees were inside the facility at the time, but all escaped without injury. The cause of the fire was not immediately known.