Hydraulic mining of silica sand in pit owned by Standard Silica Corporation, near Ottawa, LaSalle County, Illinois
Looking SW at hydraulic operation, SW of Ottawa. SW/4 NE/4 16-33N-3E, LaSalle County, Illinois;
High-pressure water jets break and disaggreate the porous sandstone. The resultant slurry is pumped to the nearby processing plant.;
1 photograph and negative;
May 11, 1954;
St. Peter Sandstone
Standard Silica Company
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