Historic Bush Mill was located on the Amos Branch to use mountain stream waterpower. Its foundation and piers were made of dry-laid limestone from Copper Ridge and measured 39'9" x 30'4". The framing was built of hand-hewn oak beams, and the original siding was yellow poplar. The exterior weatherboards were replaced in the 1980s with cedar siding, and the metal roof was replaced in 2012. The original building was destroyed by fire in 1895. Corn and wheat were milled for farms generally within a 1/2 day trip by horse and wagon. The ground cornmeal and flour were used to bake bread and to exchange for other foodstuffs and daily needs. The miller and family lived in the house next to the mill and provided meals and overnight accommodations to farmers who brought their corn and wheat for milling.