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.
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Employee was walking from the dryer area to the main office when EE tripped over a constructed metal ledge leaving the dryer area.
MACHINERY · DAYS AWAY FROM WORK ONLY
Employee was getting out of the blade when EE felt pain in EE's upper right arm.
SLIP OR FALL OF PERSON · DYS AWY FRM WRK & RESTRCTD ACT
Employee was on a work platform prepping bags for the packer. An airline came off the packer placer arm. The employee saw the adverse condition and quickly came down the three steps from the work platform. The right gastrocnemius muscle ruptured when the employee stepped down onto the cement floor.
56.12006 · $151.00 proposed
Regular Safety and Health Inspection · 8.5 on-site hours
Regular Safety and Health Inspection · 14.0 on-site hours
56.14207 · $151.00 proposed
Regular Safety and Health Inspection · 6.8 on-site hours
56.12028 · $151.00 proposed
Regular Safety and Health Inspection · 9.8 on-site hours
47.41(a) · $151.00 proposed
Regular Safety and Health Inspection · 5.5 on-site hours
Regular Safety and Health Inspection · 5.0 on-site hours
56.14132(b)(2) · $151.00 proposed
56.15001 · $151.00 proposed
OTHER · DYS AWY FRM WRK & RESTRCTD ACT
EE knelt down to adjust hooder film. EE went to stand up and their right knee starting hurting. Their knee continued to hurt throughout the shift and the following days. EE called in sick their next shift to allow their knee to rest. EE saw a medical professional on 9/18/25 and was put on restricted duty.
SLIP OR FALL OF PERSON · DYS AWY FRM WRK & RESTRCTD ACT
Slick conditions on railcars because of the dew. EE was closing lids on top of the bulk car. EE was wearing fall protection. EE slipped and fell while closing lids. EE slipped and fell on top of the bulk car. EE broke their wrist while putting their hand down to catch themselves.
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
EE dumped a portable dumping hopper. EE was returning the dumping hopper to its upright position. EE had hand in a pinch area. While pushing down on the top edge of the hopper EE's hand/fingers were pinched between hopper and forklift load backrest . X-ray was negative. EE was put on restrictive duty by medical professional.
Regular Safety and Health Inspection · 2.5 on-site hours
56.15001 · $151.00 proposed
56.14132 · $151.00 proposed
Regular Safety and Health Inspection · 7.5 on-site hours
Regular Safety and Health Inspection · 11.0 on-site hours
Regular Safety and Health Inspection · 12.3 on-site hours
56.12008 · $151.00 proposed
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.