Sand from one particular Tennessee mine is the main raw ingredient at this facility. Furnaces must reach temperatures in excess of 4000ºF to melt the sand. Other additives such as sodium oxide, dolomitic limestone, lead and boron are added to this molten silica to produce the three specific types of glass used at this location.
Filtration System Expenditure Results in Payback Measured in Days
It is very likely that every light bulb in your home or office came from one glass plant located in central Kentucky. Nearly 10% of all the glass bulbs used to make incandescent light bulbs in the world are manufactured at this one location. In addition to these bulbs they make borosilicate hard glass for spotlight lenses and reflectors, and lead glass parts used in the manufacture of fluorescent tubes.