Mine · Cook County, Illinois, United States
Thornton Quarry
Thornton Quarry is a mine in Cook County, Illinois, United States, owned by Heidelberg Materials AG.
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | Cook County | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Status | Operating (active) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Commodities | crushed limestone (mainly crushed limestone) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Owner | Heidelberg Materials AG (controls the operator) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Operator | Heidelberg Materials Midwest Agg, Inc. | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Employees | 55 people (annual average, in 2025) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Mine type | Surface | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Coordinates | 41.5658, -87.6136 | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
Research on this mine and its owner.Who owns it up to the parent company, its permits, resources and offtake, and an introduction to the owner.
Request researchHow its owner compares
Heidelberg Materials AG owns 9 of the 2,675 mines in the United States in our data with a named owner; 34 owners have more. Counts cover the mines in our data that name an owner, holder or operator; an asset with several owners counts for each.
| Owner in United States | Rank | Mines | Share |
|---|---|---|---|
| Alpha Metallurgical Resources Inc | 1st | 56 | 2.1% |
| Sev.en Global Investments a.s. | 2nd | 50 | 1.9% |
| Rosebud Mining Company | 3rd | 40 | 1.5% |
| Martin Marietta Materials Inc | 4th | 29 | 1.1% |
| Metinvest B V | 4th | 29 | 1.1% |
| Heidelberg Materials AG | 35th | 9 | 0.34% |
Nearby
Within 50 km of this mine: 20 data centers, 12 power plants (6 operating, 5,011 MW) and 2 AI supercomputers, measured from the coordinates in the facts above. The table shows the nearest 8, up to 3 per kind.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| Whiting Clean Energy | Power plant | 577 MW | Operating | 17 km |
| Digital Crossroad | Data center | — | — | 18 km |
| Southeast Chicago Energy Project | Power plant | 407 MW | Closed | 18 km |
| University Park North | Power plant | 726 MW | Operating | 18 km |
| QTS Chicago | Data center | — | — | 31 km |
| Iron Mountain Data & Record Storage | Data center | — | — | 32 km |
| Argonne NL Polaris | AI supercomputer | 706 H100e | Operating | 35 km |
| Vultr Chicago Cluster | AI supercomputer | 3,964 H100e | Operating | 48 km |
Owner, operator and place
More from Heidelberg Materials AG
- Romeo Quarrymine
- Mitchell Plantmine
- Eagle 1400mine
- Sandusky Quarrymine
- Torrance Mine (UG)mine
- Bridgeport Plantmine
- Servtex Plantmine
- Lake Bridgeport Quarrymine
Other mines in Illinois
Data on this page
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- Epoch AI. Epoch AI supercomputers, CC BY 4.0.
- MSHA Mines Data Set. MSHA Mines Data Set, Public domain.
- © OpenStreetMap contributors. OpenStreetMap data centers, ODbL 1.0.