Minntac Mine
Active
Surface
Metal
Operator: United States Steel Corp-Minnesota Ore Operations
Controller: USX Corp (United States Steel Corp)
Location: MOUNTAIN IRON, St Louis County, MN
Employees: 430
4,279
Violations
831
S&S Violations
331
Accidents
$5.0M
Penalties
Recent Violations
View all 4,279 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 03/02/2026 | 56.12030 | Non-S&S | LowNegligence | $0 |
| 02/25/2026 | 56.14107(a) | Non-S&S | LowNegligence | $0 |
| 02/25/2026 | 56.20003(c) | Non-S&S | LowNegligence | $0 |
| 02/25/2026 | 56.11002 | Non-S&S | LowNegligence | $0 |
| 02/23/2026 | 56.12030 | Non-S&S | LowNegligence | $0 |
| 02/23/2026 | 56.11012 | Non-S&S | LowNegligence | $0 |
| 02/19/2026 | 56.11002 | Non-S&S | LowNegligence | $0 |
| 02/19/2026 | 56.11002 | Non-S&S | LowNegligence | $0 |
| 02/19/2026 | 56.11002 | Non-S&S | LowNegligence | $0 |
| 02/19/2026 | 56.20003(b) | Non-S&S | LowNegligence | $0 |
| 02/19/2026 | 56.20003(a) | S&S | LowNegligence | $0 |
| 02/19/2026 | 56.14109(a) | Non-S&S | LowNegligence | $0 |
| 02/19/2026 | 56.14205 | Non-S&S | LowNegligence | $0 |
| 02/17/2026 | 56.14101(a)(2) | Non-S&S | LowNegligence | $0 |
| 02/17/2026 | 56.14101(a)(2) | Non-S&S | LowNegligence | $0 |
| 02/17/2026 | 56.14207 | Non-S&S | LowNegligence | $0 |
| 02/17/2026 | 56.14207 | Non-S&S | LowNegligence | $0 |
| 02/17/2026 | 56.14207 | Non-S&S | LowNegligence | $0 |
| 02/17/2026 | 56.12004 | Non-S&S | LowNegligence | $0 |
| 02/17/2026 | 56.14101(a)(2) | Non-S&S | LowNegligence | $0 |
Accidents & Injuries
View all 331 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 01/25/2026 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 01/02/2026 | POWERED HAULAGE | DAYS AWAY FROM WORK ONLY | None |
| 12/14/2025 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 15d restricted |
| 12/04/2025 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 38d restricted |
| 11/22/2025 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 26d restricted |
| 10/28/2025 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 10/08/2025 | MACHINERY | DAYS AWAY FROM WORK ONLY | None |
| 09/11/2025 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | None |
| 09/02/2025 | SLIP OR FALL OF PERSON | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 08/21/2025 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
Inspections
View all 241 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 01/12/2026 | 01/12/2026 | 8.00 | 1 |
| 11/25/2025 | 364.75 | 3 | |
| 09/22/2025 | 09/22/2025 | 11.00 | 1 |
| 09/22/2025 | 09/22/2025 | 4.75 | 1 |
| 09/15/2025 | 09/15/2025 | 3.25 | 1 |
| 09/15/2025 | 09/15/2025 | 4.75 | 1 |
| 09/02/2025 | 09/02/2025 | 14.50 | 1 |
| 07/01/2025 | 07/01/2025 | 2.25 | 1 |
| 06/23/2025 | 06/23/2025 | 3.75 | 1 |
| 06/16/2025 | 06/17/2025 | 6.00 | 1 |
Mine Details
MSHA Mine ID2100282
Mine TypeSurface
StatusActive
CommodityMetal
SIC DescriptionIron Ore
Employees430
Days/Week7.0
Hours/Shift8.0
Coordinates47.5325000, -92.6236110
Nearest TownMOUNTAIN IRON
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Frequently Asked Questions
How many MSHA violations does Minntac Mine have?
Minntac Mine has 4279 MSHA violations on record, of which 831 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $5.0M.
What type of mine is Minntac Mine?
Minntac Mine is a Surface mine producing Metal, located in MOUNTAIN IRON, St Louis County, MN. It currently has 430 employees.
Has anyone been injured or killed at Minntac Mine?
According to MSHA records, Minntac Mine has 331 reported accident/injury records and 0 fatalities on file.
Who operates Minntac Mine?
Minntac Mine is operated by United States Steel Corp-Minnesota Ore Operations and controlled by USX Corp (United States Steel Corp). MSHA Mine ID: 2100282.