Mine · Marlboro County, South Carolina, United States
Marlboro Mine
Marlboro Mine is a mine in Marlboro County, South Carolina, United States, owned by Ferroglobe PLC.
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 | Marlboro 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 | quartz crystal (mainly quartz crystal) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Owner | Ferroglobe PLC (controls the operator) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Operator | Ferroglobe USA Quartz, Inc. | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Employees | 15 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 | 34.7308, -79.8322 | 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
Ferroglobe PLC 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% |
| Ferroglobe PLC | 35th | 9 | 0.34% |
Nearby
Within 50 km of this mine: 2 power plants (3,013 MW), measured from the coordinates in the facts above.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| Sherwood H Smith Jr Energy Complex | Power plant | 2,245 MW | Operating | 15 km |
| H B Robinson | Power plant | 769 MW | Operating | 47 km |
Owner, operator and place
More from Ferroglobe PLC
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Other mines in South Carolina
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.