780Cm0902: Motor and device for silt sampling experiments
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Apparatus used as part of a series of silt sampling experiments by Ralph Parshall and Carl Rohwer. For more information see "88. Sand and Silt Sampler, Bellvue Laboratory, 1929" in the Irrigation Research Papers, Water Resources Archive, CSU Archives and Special Collections. Note brick wall and electrical outlet behind apparatus and rolled paper hanging from table.