In the 21st century, the mill is usually called the Crystal Mill or the Old Crystal Mill. Many decades ago, when the mill was still in use, it was called the Sheep Mountain Power House[2] at the Lost Horse Millsite, or simply the Lost Horse Mill. The building is built on a mining claim named "Lost Horse".[3] The site is referred to as a "mill" because there was a 3-stamp mill for crushing ore, in a building directly adjacent to the south of the surviving structure.[2][3]
History
The mill was constructed in 1893 by George C. Eaton and B.S. Phillips, promoters of the Sheep Mountain Tunnel and Mining Company.[2] It was built as a power plant for the Sheep Mountain Tunnel.[2] Originally it had a horizontal waterwheel that generated compressed air for miners in the nearby silver mines.[2] It fell into disuse in 1917 when the Sheep Mountain Tunnel mine closed. The mill was placed on the National Register of Historic Places on July 5, 1985.[2]