Sometime before 1894, Al Tingman ("The Father of Indio") and Ed Holland (of Lost Horse Mine fame) staked claims on some rich gold ore outcrops high above Pleasant Valley. They sold the mine to Bill and John Garrison, who formed the Hexahedron Mining Company. The Company dug a well but found little water. They also built a five-stamp mill called the Hexie mill, which wasn’t very successful either, probably due to the lack of water. This caused most of the ore from the mine to be hauled to the mill at the New El Dorado Mine on the other side of the mountain. A road once connected them through Fried Liver Wash. The Hexie stamp mill was dismantled by 1929.
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