article_snippet.sent: A fire department spokesperson said that building caught on fire contained plastics .
article_snippet.sent: Louisville Fire Department spokesman Sal Melendez said that building caught on fire made plastic products.
article_snippet.sent: Pieces of ash (pictured) as large as lunch boxes were found in the building area and ash was found on planes at Louisville International Airport .
article_snippet.sent: Pieces of ash as large as lunch boxes were reported in the building area and ash on planes was reported at Louisville International Airport.