Tilden Mine
Active
Surface
Metal
Operator: Tilden Mining Company, LC.
Controller: Cleveland-Cliffs Inc
Location: Ishpeming, MI, Marquette County, MI
Employees: 860
7,307
Violations
1,079
S&S Violations
773
Accidents
$9.3M
Penalties
Recent Violations
View all 7,307 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 03/04/2026 | 56.14112(b) | Non-S&S | LowNegligence | $0 |
| 03/04/2026 | 56.14112(b) | Non-S&S | LowNegligence | $0 |
| 03/03/2026 | 56.11002 | Non-S&S | LowNegligence | $0 |
| 03/03/2026 | 56.14107(a) | Non-S&S | LowNegligence | $0 |
| 03/03/2026 | 56.12028 | Non-S&S | LowNegligence | $0 |
| 03/03/2026 | 56.12018 | Non-S&S | LowNegligence | $0 |
| 03/03/2026 | 56.20003(a) | S&S | LowNegligence | $0 |
| 02/24/2026 | 56.16006 | Non-S&S | LowNegligence | $0 |
| 02/24/2026 | 56.12028 | Non-S&S | LowNegligence | $0 |
| 02/24/2026 | 56.20011 | Non-S&S | LowNegligence | $0 |
| 02/24/2026 | 56.12032 | Non-S&S | LowNegligence | $0 |
| 02/24/2026 | 56.20003(a) | Non-S&S | LowNegligence | $0 |
| 02/24/2026 | 56.14107(a) | Non-S&S | LowNegligence | $0 |
| 02/24/2026 | 56.12028 | Non-S&S | LowNegligence | $0 |
| 02/24/2026 | 56.11016 | Non-S&S | LowNegligence | $0 |
| 02/24/2026 | 56.16005 | Non-S&S | LowNegligence | $0 |
| 02/23/2026 | 56.9100(a) | S&S | LowNegligence | $0 |
| 02/19/2026 | 56.14112(b) | Non-S&S | ModNegligence | $0 |
| 02/19/2026 | 56.11012 | Non-S&S | LowNegligence | $0 |
| 02/19/2026 | 56.12019 | Non-S&S | LowNegligence | $0 |
Accidents & Injuries
View all 773 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 02/06/2026 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 6d restricted |
| 01/25/2026 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | None |
| 11/29/2025 | OTHER | INJURIES DUE TO NATURAL CAUSES | None |
| 11/27/2025 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | None |
| 11/11/2025 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | None |
| 11/03/2025 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 2d lost |
| 10/09/2025 | ENTRAPMENT | ACCIDENT ONLY | None |
| 09/12/2025 | FIRE | ACCIDENT ONLY | None |
| 09/05/2025 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 08/26/2025 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
Inspections
View all 349 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 02/25/2026 | 21.00 | 2 | |
| 02/23/2026 | 02/24/2026 | 11.25 | 1 |
| 01/30/2026 | 02/02/2026 | 10.25 | 1 |
| 01/20/2026 | 01/20/2026 | 10.00 | 1 |
| 12/31/2025 | 01/06/2026 | 21.00 | 2 |
| 12/08/2025 | 560.00 | 6 | |
| 12/08/2025 | 12/09/2025 | 12.75 | 1 |
| 11/29/2025 | 01/12/2026 | 4.25 | 1 |
| 10/08/2025 | 10/08/2025 | 8.50 | 1 |
| 09/15/2025 | 09/17/2025 | 1.50 | 1 |
Mine Details
MSHA Mine ID2000422
Mine TypeSurface
StatusActive
CommodityMetal
SIC DescriptionIron Ore
Employees860
Days/Week7.0
Hours/Shift12.0
Coordinates46.3894440, -87.6361110
Nearest TownIshpeming, MI
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Frequently Asked Questions
How many MSHA violations does Tilden Mine have?
Tilden Mine has 7307 MSHA violations on record, of which 1079 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $9.3M.
What type of mine is Tilden Mine?
Tilden Mine is a Surface mine producing Metal, located in Ishpeming, MI, Marquette County, MI. It currently has 860 employees.
Has anyone been injured or killed at Tilden Mine?
According to MSHA records, Tilden Mine has 773 reported accident/injury records and 1 fatalities on file.
Who operates Tilden Mine?
Tilden Mine is operated by Tilden Mining Company, LC. and controlled by Cleveland-Cliffs Inc. MSHA Mine ID: 2000422.