 The Bremner Historic Mining District embodies its period of twentieth-century mining, illustrating both its mining process and its evolutionary sequence.Unusually complete, it retains virtually all of its historic components, including an important placer site, a camp, four discrete lode mines, a mill, and an associated transportation network.The Golconda Mining Company site, which contains a campsite, an elaborate ditch, and extensive piles of hand-stacked cobble, provides an example of an early placer mining system.