The Sunflower Mine was discovered in 1911 by E.H. Bowman. Bowman intending to find gold instead discovered a rich vein of cinnabar. Cinnabar, an ore of mercury, was used in the amalgation of gold and was an essential part of gold mining. The mine was later purchased by the Sunflower Mining Company. A large processing facility was built onsite (as per this pic) to break down the ore into mercury whereby it was shipped by wagon and eventually truck. The workings consist of impressively sized open cuts, tunnels and underground stoping. From 1913 to 1965, an estimated 3,973 flasks of mercury were produced and 2,140 pounds of copper. Also very notable was 764 ounces of gold and 1,095 ounces of silver;