Four workers were injured in a Dec. 7 fire at compounder Polymer Partners LLC in Henderson, Ky.
Three of the workers remained hospitalized as of Dec. 9. The other employee was treated and released from an area hospital.
The cause of the fire remains unknown, company officials said in a statement. The fire began around 1:30 p.m. in a work area after a “polymer flash” occurred, according to the statement.
The company has reported the incident to the Kentucky Division of Occupational Safety and Health.
Henderson Fire Chief Danny Froelich said in a Dec. 8 phone interview that three of the workers suffered burn injuries and the fourth needed treatment for smoke inhalation. He added that carbon black — a common plastic colorant — was involved in the fire.
The fire was under control in a little over an hour, Froelich said.
It's the second time in 10 years that workers were injured in a fire at the 70,000-square-foot site. In October 2002, three workers were injured when material overheated in a mixer, and then ignited in an extruder.
Polymer Partners uses carbon black and other additives to make compounds based on a wide variety of commodity and engineering resins.
The 35-employee company has operated in Henderson since 1997.