Otis W. Freeman Collection. SPC 988-0293 #D2-21
Glass lantern slides.
Scanned at 600 PPI TIFF format, resized to 72 ppi JPEG format.
Photograph of a placer gold mining operation. Placer is an open pit form of mining using water pressure to extract minerals from the earth without tunneling.
Archives and Special Collections, Eastern Washington University Libraries.
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Geology; Gold mining; Gold mining equipment; Hydraulic mining