At least nine Dragon (or Snake) Kilns were once found along the 13th to 18th Milestones of Jurong Road, attracted by the availability of Jurong White Clay - ideal material for clay latex cups. The cups were fired by the kilns to feed a huge demand from the rubber estates in the area. Over the years, most of the kiln closed due to the vanishing demand as the estates gave way to urban development. Only two, both of which have stopped operating commercially, have survived. The area the two, the Jalan Bahar and Thow Kwang kilns, are in is slated for development as a CleanTech Park, and the future for these kilns now looks bleak.