Mine · Harford County, Maryland, United States
Havre de Grace Quarry
Havre de Grace Quarry is a mine in Harford County, Maryland, United States, owned by Vulcan Materials Company.
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 |
|---|---|---|
| Name in the source | HAVRE DE GRACE QUARRY | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Location | Harford 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 traprock (mainly crushed traprock) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Owner | Vulcan Materials Company (controls the operator) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Operator | Vulcan Construction Materials, LLC | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Employees | 97 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 | 39.5683, -76.1003 | 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
Vulcan Materials Company owns 28 of the 2,675 mines in the United States in our data with a named owner; 6 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% |
| Vulcan Materials Company | 7th | 28 | 1% |
Nearby
Within 50 km of this mine: 9 power plants (12,003 MW) and 1 data center, measured from the coordinates in the facts above. The table shows the nearest 4, up to 3 per kind.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| Conowingo | Power plant | 531 MW | Operating | 12 km |
| Perryman | Power plant | 492 MW | Operating | 17 km |
| Essential Power Rock Springs LLC | Power plant | 796 MW | Operating | 18 km |
| Johns Hopkins Data Center | Data center | — | — | 49 km |
Owner, operator and place
More from Vulcan Materials Company
- Calera Quarrymine
- West Broadwaymine
- Napa Quarrymine
- Lake Herman Quarrymine
- Pleasanton Plantmine
- Wolmanmine
- Miami Quarrymine
- Keuka Sand Plantmine
Other mines in Maryland
Data on this page
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- MSHA Mines Data Set. MSHA Mines Data Set, Public domain.
- © OpenStreetMap contributors. OpenStreetMap data centers, ODbL 1.0.