The Ottawa Plant, operated by U.S. Silica Company, is a surface quarry located in La Salle County, Illinois, easily accessible from I-80. This professionally managed site produces high-quality ground silica for various industrial applications.
Operator
U. S. Silica Company
Parent Company
USS Holdings Inc
Company Type
Corporation
17
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41.346667, -88.865000
Data Source
Mine Safety and Health Administration (MSHA)
Last updated: 1/30/2026
Intersection of Essington Rd and 135th St., IL
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