Thornton Quarry, operated by Heidelberg Materials Midwest Agg, Inc., produces high-quality crushed and broken limestone NEC, suitable for a wide range of construction and infrastructure projects. Strategically located in Thornton, Cook County, IL, this surface mine provides convenient access to major markets and transportation networks within the region. With 49 employees and backed by the resources of Heidelberg Materials AG, Thornton Quarry ensures reliable supply and consistent material quality.
Operator
Heidelberg Materials Midwest Agg, Inc.
Parent Company
Heidelberg Materials AG
Company Type
Corporation
65
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41.565833, -87.613611
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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