Coal production
0reported short tons
ACTIVE / OPERATOR PORTFOLIO
Stillwater Mining Company
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA OPERATOR IDL14843
MINE PORTFOLIO
2 of 2 mines and facilities
2025-01-01 – 2026-10-18. Active records; production reporting is not required.
Material, method and type filters apply to this table. The portfolio’s status applies to the entire page. GEM fields describe their own release, not the selected MSHA year.
| Mine | Location / type | Coal · short tons | Hours worked | Violations | Accident records | On-site inspection hours |
|---|---|---|---|---|---|---|
| EAST BOULDER MINE2401879 · Active6/8 quarters reported | Sweet Grass, MTUnderground · MSHA: Platinum Group Ore | 0 | 1,010,167 | 248 | 23 | 1,530.5 |
| STILLWATER MINE2401490 · Active6/8 quarters reported | Stillwater, MTUnderground · MSHA: Platinum Group Ore | 0 | 1,204,815 | 341 | 9 | 1,669.0 |
Production and hours sum available quarterly reports. — means unavailable; zero safety records means none in the selected imported period. Ownership reflects the current MSHA record.
LOCATION
Portfolio map
2 of 2 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- EAST BOULDER MINE45.50361, -110.08583Open map ↗
- STILLWATER MINE45.38389, -109.87278Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. All 2 mines listed under this operator were checked; 2 have reports in the available quarters. Totals use current ownership.
Hours worked
2,214,982reported employee hours
Tons per hour
0.00production ÷ hours worked
Missing values appear as —. Totals use available reports. Tons per hour requires production and hours for the same quarters and a nonzero hours total. * Striped bars mark partial mine coverage or an incomplete quarter. See the table for coverage.
Quarterly data and reporting coverage
| Quarter | Coal (short tons) | Hours worked | Tons / hour | Avg. employees | Coverage |
|---|---|---|---|---|---|
| 2025 Q1 | 0 | 373,457 | 0.00 | 800 | 2/2 mines reporting |
| 2025 Q2 | 0 | 357,838 | 0.00 | 782 | 2/2 mines reporting |
| 2025 Q3 | 0 | 365,393 | 0.00 | 779 | 2/2 mines reporting |
| 2025 Q4 | 0 | 364,747 | 0.00 | 795 | 2/2 mines reporting |
| 2026 Q1 | 0 | 378,918 | 0.00 | 788 | 2/2 mines reporting |
| 2026 Q2 | 0 | 374,629 | 0.00 | 786 | 2/2 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
58979 significant & substantial (S&S)
Accident records
321 records classified as fatality
Proposed penalties · USD
859,369.00581 of 589 violations with amounts
On-site inspection hours
3,199.5058 inspections · 58 with hours
Counts are published records, including contractor records. * The quarter was incomplete at the snapshot date; recent counts may rise as reports arrive. — means no reported amount or hours. Portfolio totals use current membership.
Quarterly safety data
| Quarter | Violations | S&S | Proposed USD | Accident records | Fatality records | Inspections | On-site hours |
|---|---|---|---|---|---|---|---|
| 2025-Q1 | 89 | 10 | 41,547.00 | 2 | 0 | 15 | 429.3 |
| 2025-Q2 | 63 | 12 | 66,164.00 | 10 | 0 | 9 | 470.8 |
| 2025-Q3 | 129 | 7 | 112,762.00 | 6 | 1 | 9 | 586.5 |
| 2025-Q4 | 90 | 13 | 154,769.00 | 4 | 0 | 4 | 406.8 |
| 2026-Q1 | 94 | 8 | 102,824.00 | 1 | 0 | 8 | 488.8 |
| 2026-Q2 | 70 | 14 | 329,615.00 | 5 | 0 | 6 | 373.5 |
| 2026-Q3 | 54 | 15 | 51,688.00 | 4 | 0 | 7 | 444.0 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- STILLWATER MINE · 2401490
57.20011 · $151.00 proposed
- STILLWATER MINE · 2401490
57.3200 · $151.00 proposed
- STILLWATER MINE · 2401490
57.11003 · $177.00 proposed
- STILLWATER MINE · 2401490
57.8528 · $592.00 proposed
- STILLWATER MINE · 2401490
57.14100(b) · $177.00 proposed
- STILLWATER MINE · 2401490
57.12004 · $883.00 proposed
- EAST BOULDER MINE · 2401879
57.4104(b)(1) · $165.00 proposed
- EAST BOULDER MINE · 2401879
57.8528 · $165.00 proposed
- EAST BOULDER MINE · 2401879
57.8528 · $165.00 proposed
- EAST BOULDER MINE · 2401879
57.8528 · $165.00 proposed
- EAST BOULDER MINE · 2401879
Regular Safety and Health Inspection · 217.5 on-site hours
- EAST BOULDER MINE · 2401879
57.14205 · S&S · $2,712.00 proposed
- EAST BOULDER MINE · 2401879
57.15001 · $549.00 proposed
- STILLWATER MINE · 2401490
Regular Safety and Health Inspection · 196.0 on-site hours
- STILLWATER MINE · 2401490
DISORDERS (REPEATED TRAUMA) · OCCUPATNAL ILLNESS NOT DEG 1-6
Accident narrative
On July 2, 2026 An audiologist confirmed and notified operator that an employee had a reportable STS in both their right and left ear after reviewing their original and confirmation hearing tests. Making this an reportable Occupational illness.
- EAST BOULDER MINE · 2401879
DISORDERS (REPEATED TRAUMA) · OCCUPATNAL ILLNESS NOT DEG 1-6
Accident narrative
During a review of audiograms by an audiologist on 6-24-26 it was reported to us that the employee sustained a reportable threshold shift in EE's hearing.
- EAST BOULDER MINE · 2401879
DISORDERS (REPEATED TRAUMA) · OCCUPATNAL ILLNESS NOT DEG 1-6
Accident narrative
During a review of audiograms by an audiologist on 6-24-26 it was reported to us that the employee sustained a reportable threshold shift in EE's hearing.
- EAST BOULDER MINE · 2401879
DISORDERS (REPEATED TRAUMA) · OCCUPATNAL ILLNESS NOT DEG 1-6
Accident narrative
3rd party audiologist confirmed a hearing reportable hearing shift on 6/24/2026
- EAST BOULDER MINE · 2401879
FALL OF ROOF OR BACK · DAYS AWAY FROM WORK ONLY
Accident narrative
Miner was in process of installing collar pipe in drilled holes in mining face when a rock fell and contacted the miner. The rock contacted the employee's head back and ankle as it fell.
- STILLWATER MINE · 2401490
57.12028 · S&S · $15,768.00 proposed
- STILLWATER MINE · 2401490
103 (g) Written Notification Hazard Complaint Inspectio · 16.0 on-site hours
- STILLWATER MINE · 2401490
103 (g) Written Notification Hazard Complaint Inspectio · 3.5 on-site hours
- STILLWATER MINE · 2401490
57.3360
- STILLWATER MINE · 2401490
57.3360
- EAST BOULDER MINE · 2401879
57.8528 · S&S · $642.00 proposed
Safety sources and definitions
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.
Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.
Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.
S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.
Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.
Portfolio totals use current mine membership, including events before the current owner or operator's tenure.
CFR headings link to the current Title 30 index; they are not historical legal determinations.
SELECTED PORTFOLIO
1 linked controller.
Relationships reflect the selected mine status and current MSHA controller/operator fields.