Coal production
0reported short tons
ACTIVE / OPERATOR PORTFOLIO
Tilden Mining Company, LC.
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA OPERATOR IDL11087
MINE PORTFOLIO
1 of 1 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 |
|---|---|---|---|---|---|---|
| Tilden Mine2000422 · Active6/8 quarters reported | Marquette, MISurface · MSHA: Iron Ore | 0 | 2,869,104 | 484 | 36 | 1,312.0 |
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
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Tilden Mine46.38944, -87.63611Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. All 1 mines listed under this operator were checked; 1 have reports in the available quarters. Totals use current ownership.
Hours worked
2,869,104reported 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 | 478,375 | 0.00 | 801 | 1/1 mines reporting |
| 2025 Q2 | 0 | 479,162 | 0.00 | 790 | 1/1 mines reporting |
| 2025 Q3 | 0 | 460,029 | 0.00 | 776 | 1/1 mines reporting |
| 2025 Q4 | 0 | 470,509 | 0.00 | 789 | 1/1 mines reporting |
| 2026 Q1 | 0 | 500,419 | 0.00 | 860 | 1/1 mines reporting |
| 2026 Q2 | 0 | 480,610 | 0.00 | 884 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
48463 significant & substantial (S&S)
Accident records
360 records classified as fatality
Proposed penalties · USD
706,946.00483 of 484 violations with amounts
On-site inspection hours
1,312.0032 inspections · 32 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 | 76 | 7 | 97,678.00 | 8 | 0 | 3 | 289.5 |
| 2025-Q2 | 76 | 4 | 176,740.00 | 3 | 0 | 3 | 17.3 |
| 2025-Q3 | 10 | 1 | 19,972.00 | 5 | 0 | 5 | 19.8 |
| 2025-Q4 | 55 | 10 | 105,938.00 | 6 | 0 | 5 | 470.0 |
| 2026-Q1 | 112 | 13 | 129,807.00 | 4 | 0 | 8 | 61.8 |
| 2026-Q2 | 155 | 28 | 176,811.00 | 5 | 0 | 4 | 439.3 |
| 2026-Q3 | 0 | 0 | — | 5 | 0 | 3 | 14.5 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 1 | 0.0 |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- Tilden Mine · 2000422
56.11012 · $959.00 proposed
- Tilden Mine · 2000422
47.44(b) · $642.00 proposed
- Tilden Mine · 2000422
56.4201(a)(1) · $288.00 proposed
- Tilden Mine · 2000422
56.20003(a) · $1,126.00 proposed
- Tilden Mine · 2000422
Verbal Hazard Complaint Inspections · 9.5 on-site hours
- Tilden Mine · 2000422
Regular Safety and Health Inspection · 435.5 on-site hours
- Tilden Mine · 2000422
OTHER · INJURIES DUE TO NATURAL CAUSES
Accident narrative
Employee experienced a presumed personal medical emergency at the start of their shift resulting in cardiac arrest. Emergency services responded, however, resuscitation efforts were unsuccessful.
- Tilden Mine · 2000422
Non-Chargeable Accident Investigation · 2.3 on-site hours
- Tilden Mine · 2000422
SLIP OR FALL OF PERSON · DYS AWY FRM WRK & RESTRCTD ACT
Accident narrative
Employee arrived to work for the start of day shift. On their way into the truck shop from their personal vehicle, the employee slipped and fell on ice in the parking lot and broke their hip. Employee was transported to the hospital for medical treatment.
- Tilden Mine · 2000422
HANDLING OF MATERIALS · DYS AWY FRM WRK & RESTRCTD ACT
Accident narrative
Employee was making a shovel cable connection when the cable rolled, pulling the employee's left arm forward. The employee experienced left arm pain and was evaluated at the local ED where images revealed an injury to their left bicep. The employee was prescribed work restrictions and is being accommodated.
- Tilden Mine · 2000422
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was hosing in the crusher bowl when the employee tripped and fell landing on their left knee. Employee continued to work and felt something running down their leg when they observed a cut below the left knee. Employee was evaluated at the ER and received medical treatment (stitches).
- Tilden Mine · 2000422
ENTRAPMENT · ACCIDENT ONLY
Accident narrative
A single miner was involved in an elevator entrapment when an elevator malfunction occurred. Miner was safely removed and the elevator was repaired, inspected and returned to service.
- Tilden Mine · 2000422
103 (g) Written Notification Hazard Complaint Inspectio · 5.0 on-site hours
- Tilden Mine · 2000422
Spot Inspection · 0.0 on-site hours
- Tilden Mine · 2000422
50.10(d) · $226.00 proposed
- Tilden Mine · 2000422
FIRE · ACCIDENT ONLY
Accident narrative
A fire occurred on a Komatsu 930E Surface Mining truck. The area was secured to prevent harm from potential hazards for the duration of the exposure. External fire response agencies were immediately contacted and extinguished the fire when conditions allowed.
- Tilden Mine · 2000422
HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Employee was removing hardware from shovel dipper using a hammer when a piece of the hammer head broke off striking the employee in the left glute. The employee was seen in the ED where they received medical treatment and returned to work.
- Tilden Mine · 2000422
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
An employee attempting to clear a jammed chain for a chain fall sustained a fracture to their left index finger.
- Tilden Mine · 2000422
MACHINERY · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
While positioning a pinion for install for the Pebble Mill, an employee's finger was pinched between the pinion and a liner bolt on the Pebble Mill. The employee sustained a laceration to their left index finger
- Tilden Mine · 2000422
103 (g) Written Notification Hazard Complaint Inspectio · 3.5 on-site hours
- Tilden Mine · 2000422
Compliance Follow-up Inspection · 2.3 on-site hours
- Tilden Mine · 2000422
HANDLING OF MATERIALS · DYS AWY FRM WRK & RESTRCTD ACT
Accident narrative
Employee sustained and unknown injury to the left forearm while manipulating a lifter bar from the inside of the #1 Balling Mill.
- Tilden Mine · 2000422
103 (g) Written Notification Hazard Complaint Inspectio · 13.0 on-site hours
- Tilden Mine · 2000422
56.20003(a) · S&S · $11,450.00 proposed
- Tilden Mine · 2000422
56.20003(a) · $1,037.00 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.