Ottawa Silica Company.
Near Ottawa, SE/4 9-33N-3E, LaSalle County, Illinois;
Pit in St. Peter Sandstone. Hydraulic mining of silica sand showing monitor directing water stream against blasted sand;
1 photograph and negative;
St. Peter Sandstone--LaSalle County
Ottawa Silica Company
Manuscripts, maps, fieldnotes, and photographs may be viewed in-house only. Please contact the ISGS Special Collections Curator, Anne Huber, for an appointment at 217-300-0005 or email email@example.com Monday thru Friday, 8am-noon or 1pm-5pm.