The Kilns were built in 1886 by Warren King of Butte, Montana. They are made from clay said to be from deposits along Jump Creek on the east side of the valley. Each is about 20 feet in height and diameter, and produce about 1,500 bushels of charcoal per load of wood (30 to 40 cords). Together they produce 44-50,000 bushels of charcoal per month.
In the summer of 2000, the remaining Kilns under went restoration to preserve them for future generations to enjoy.