Marlboro Mine Metal/Non-Metal
Ferroglobe USA Quartz, Inc.
· Surface
Controlled by
Ferroglobe PLC
Wallace,
Marlboro County,
SC
·
Active
MSHA Mine ID: 3800768
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2024
38
citations
6
significant & substantial
$7,022
proposed penalties
$7,022
paid to date
Source: MSHA violations data, updated weekly.
Quarterly safety rates
Citations per million employee-hours, as reported to MSHA
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2025 Q4 | 13,984 | 0 | 0 | 0.0 |
| 2025 Q3 | 10,975 | 0 | 0 | 0.0 |
| 2025 Q2 | 10,332 | 0 | 0 | 0.0 |
| 2025 Q1 | 8,897 | 0 | 0 | 0.0 |
| 2024 Q4 | 8,020 | 20 | 5 | 2493.8 |
| 2024 Q3 | 7,335 | 4 | 0 | 545.3 |
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No reportable incidents on file.
MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.