File:Miners Operate Hydraulic Sluice, San Francisquito Canyon, LA 1890-1900.jpg
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- 01:48, September 14, 2006 Lordkinbote (357 bytes) (Miners operate a hydraulic sluice in San Francisquito Canyon, Los Angeles County, California between 1890 and 1900. The placer mine machine consists of adobe columns, pulleys, ropes, and wood boxes. Donkeys are loaded with ore bags. {{Denver Public Libr)
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