ACTIVE / CONTROLLER PORTFOLIO
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MINE PORTFOLIO
2025-01-01 – 2026-10-17. 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 |
|---|---|---|---|---|---|---|
| Big Horn Basin Mines4800974 · Active | Big Horn, WYSurface · MSHA: Bentonite | — | — | 5 | 0 | 35.3 |
| Lucerne Mill4801191 · Active | Hot Springs, WYSurface · MSHA: Bentonite | — | — | 2 | 4 | 13.5 |
| Magnet Cove Mill4800602 · Active | Big Horn, WYFacility · MSHA: Bentonite | — | — | 7 | 3 | 26.3 |
| Magnet Cove Mine4800603 · Active | Big Horn, WYSurface · MSHA: Bentonite | — | — | 7 | 2 | 28.0 |
| Sage Creek Mill4800612 · Active | Big Horn, WYFacility · MSHA: Bentonite | — | — | 1 | 4 | 17.5 |
| Stucco Mill4800611 · Active | Big Horn, WYFacility · MSHA: Bentonite | — | — | 2 | 3 | 34.0 |
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
6 of 6 mines with usable MSHA coordinates. Select a marker to open a mine.
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-17. All 6 mines listed under this controller were checked; 0 have reports in the available quarters. Totals use current ownership.
reported short tons
reported employee hours
production ÷ 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.
| Quarter | Coal (short tons) | Hours worked | Tons / hour | Avg. employees | Coverage |
|---|---|---|---|---|---|
| 2025 Q1 | — | — | — | — | No report |
| 2025 Q2 | — | — | — | — | No report |
| 2025 Q3 | — | — | — | — | No report |
| 2025 Q4 | — | — | — | — | No report |
| 2026 Q1 | — | — | — | — | No report |
| 2026 Q2 | — | — | — | — | No report |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
2025-01-01 – 2026-10-17
0 significant & substantial (S&S)
0 records classified as fatality
21 of 24 violations with amounts
22 inspections · 22 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.
| Quarter | Violations | S&S | Proposed USD | Accident records | Fatality records | Inspections | On-site hours |
|---|---|---|---|---|---|---|---|
| 2025-Q1 | 0 | 0 | — | 4 | 0 | 2 | 2.3 |
| 2025-Q2 | 0 | 0 | — | 1 | 0 | 1 | 4.5 |
| 2025-Q3 | 6 | 0 | 906.00 | 3 | 0 | 5 | 40.8 |
| 2025-Q4 | 6 | 0 | 906.00 | 1 | 0 | 6 | 49.5 |
| 2026-Q1 | 0 | 0 | — | 1 | 0 | 0 | — |
| 2026-Q2 | 0 | 0 | — | 4 | 0 | 2 | 13.5 |
| 2026-Q3 | 12 | 0 | 1,359.00 | 2 | 0 | 6 | 44.0 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
All violations issued in the selected period. Counts combine subsections.
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
EE was experiencing back pain that EE believed may have occurred from opening a door. EE left work early and saw a medical provider. The medical provider administered a muscle relaxer and EE was put on restrictive duty.
Regular Safety and Health Inspection · 8.0 on-site hours
56.4200(b)(2)
56.4200(b)(2)
Regular Safety and Health Inspection · 9.0 on-site hours
56.12028 · $151.00 proposed
56.12032 · $151.00 proposed
56.12018 · $151.00 proposed
Regular Safety and Health Inspection · 9.0 on-site hours
56.14100(a)
56.14100(b) · $151.00 proposed
56.14207 · $151.00 proposed
Regular Safety and Health Inspection · 18.0 on-site hours
56.14115(b) · $151.00 proposed
56.14100(b) · $151.00 proposed
Compliance Follow-up Inspection · 0.0 on-site hours
50.20-1 · $151.00 proposed
POWERED HAULAGE · NO DYS AWY FRM WRK,NO RSTR ACT
EE went to a chiropractor with lower back pain on 7/30/26. EE was treated by the chiropractor for the lower back pain. The chiropractor diagnosed the EE with lower back pain due to a repetitive injury from operation of a forklift truck.
Compliance Follow-up Inspection · 0.0 on-site hours
50.20-1 · $151.00 proposed
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Employee was performing maintenance on the skid steer. The cab of the skid steer was raised. The door was left open when raising the cab. The door closed on the employee's finger. The tip of finger was lacerated and the fingernail came off the finger.
POWERED HAULAGE · DAYS RESTRICTED ACTIVITY ONLY
Material from a broken bag was on the conveyor line. The employee stopped the conveyor and was pushing material down between two conveyors. The employee turned on the conveyor while EE's hand was still in the material. The employee's hand and arm were caught in the conveyor. The employee's hand and arm sustained swelling, bruising, and an abrasion.
Regular Safety and Health Inspection · 4.0 on-site hours
Regular Safety and Health Inspection · 9.5 on-site hours
HANDLING OF MATERIALS · DYS AWY FRM WRK & RESTRCTD ACT
Employee reached across the bag sealer to adjust the sealer height. The employee had their arm extended while operating the adjustment handle. While operating the adjustment handle the employee felt something pull or tear in their right arm. The employee was diagnosed with a torn bicep.
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-17.
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
Relationships reflect the selected mine status and current MSHA controller/operator fields.