Two more workers injured in an explosion and fire at an insulation fire have died, raising the death toll to six.
Michael Reeves, 41, and Paul Newman, 50 died last week at the University of Kentucky Medical Center. Newman died Wednesday and Reeves died early Saturday, officials with the hospital and the coroner's office said.
Three other workers remain in critical condition after the Feb. 20 explosion at the CTA Acoustics plant in Corbin, which makes insulation for automakers.
Federal investigators have been testing flammable dust found in the plant to determine whether it may have triggered the explosion.