Arthur Egbert discovered the Sunset outcrop in June 1897. In the same year the Sunset Copper Company was formed. The mines primary production years were from 1902 to 1949. The sunset mine lead all other mines in the state of
The 250 ton per day mill was constructed in 1919 and used water washed concentrating tables. Smelter returns indicated the mill produced a concentrate of 33 percent copper.
The mines consisted of a total of 5 production levels. Levels 3, 4, and 5 are underwater. Level 5 being the deepest at 335 feet below adit #2.
The mine was a self contained camp which included a bunkhouse, dining hall, assay office, sawmill, concentrator, blacksmith forge and shop. Only the mill foundation remains indicating any structures.
The production value in 2002 metal prices was 11.5 million.
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