The Sound Democrat Mill is a seven stamp, five concentration table, ore-processing mill built in 1905- 1906, and remodeled in 1909. It is a typical amalgamation and concentration stamp mill built to treat gold and silver-lead ores. Located in an isolated valley at 12,000 feet in the San Juan Mountains, it is the last standing stamp mill in the productive Eureka district, and one of the most complete stamp mills remaining in Colorado.