Iron King
The Iron King, Empire, and Brush Heap were some of the first mines in the area. Most production was within 460 feet of the surface in the supergene zone. Ore minerals included cerargyrite, native silver, polybasite, and argentiferous galena. From 1952 to 1959, 5,689 tons of manganese ore were produced from the Fusselman Dolomite, mainly from the Iron King Mine. Pyrolusite is the main manganese ore mineral.