Data / Mines / Minnesota Mining & Manufacturing Company
Minnesota Mining & Manufacturing Company: 5 open mines
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Minnesota Mining & Manufacturing Company (MSHA controller ID M00221) controls 5 open mines through 1 operator, with 420 employees in 4 states, mostly crushed, broken granite. Since January 1, 2022 MSHA issued 458 citations and orders at those mines with $488,183 in proposed penalties, and operators reported 120 injury or illness cases, 1 of them fatal. Data from MSHA, November 6, 2026.
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- MSHA controller ID
- M00221
- Open mines
- 5
- Operators
- 1
- Employees
- 420
- States
- 4
- Citations and orders since January 1, 2022
- 458
- Significant and substantial
- 117 (25.5%)
- Closure orders
- 6
- High negligence or reckless
- 39
- Proposed penalties
- $488,183
- Amount paid so far
- $384,899
- Inspections
- 101
- Inspector hours on site
- 2,048
- Citations per inspection
- 4.53 (all mines 2.30)
- Accident reports
- 121
- Injury and illness cases
- 120
- Fatalities
- 1
- Latest MSHA record
- October 26, 2026
Operators under Minnesota Mining & Manufacturing Company
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| 3M Company | 5 | 420 | 458 | $488,183 | 120 |
Mines with the most citations
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| 3M Little Rock Industrial Mineral Prod | 3M Company | Pulaski County, AR | Crushed, broken granite | 125 | 258 |
| 3M, Greystone Plant | 3M Company | Marathon County, WI | Crushed, broken granite | 61 | 70 |
| 3M Corona Plant | 3M Company | Riverside County, CA | Crushed, broken stone | 85 | 66 |
| 3M, Downtown Plant | 3M Company | Marathon County, WI | Crushed, broken granite | 114 | 45 |
| 3M Pittsboro | 3M Company | Chatham County, NC | Crushed, broken granite | 35 | 19 |
States
| State | Open mines |
|---|---|
| Wisconsin | 2 |
| Arkansas | 1 |
| California | 1 |
| North Carolina | 1 |
Commodities
| Main commodity | Open mines |
|---|---|
| Crushed, broken granite | 4 |
| Crushed, broken stone | 1 |
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 65 | 17 | $25,100 | 20 |
| 2023 | 66 | 23 | $74,488 | 31 |
| 2024 | 108 | 30 | $171,769 | 30 |
| 2025 | 104 | 27 | $91,074 | 19 |
| 2026 | 115 | 20 | $125,752 | 20 |
Standards cited most at mines controlled by Minnesota Mining & Manufacturing Company
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 112 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 34 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 28 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 25 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 24 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 17 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 14 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.4200 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.4104 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.11003 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.11002 | Surface metal and nonmetal mines | 7 |
Injury and illness cases at mines controlled by Minnesota Mining & Manufacturing Company
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Fatality | 1 |
| Permanent disability | 1 |
| Days away from work or restricted activity | 92 |
| No lost time, or an occupational illness | 26 |
What the accident reports at mines controlled by Minnesota Mining & Manufacturing Company describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 51 |
| Slip or fall of person | 22 |
| Handtools (nonpowered) | 9 |
| Machinery | 8 |
| Powered haulage | 8 |
| Other | 6 |
| Disorders (repeated trauma) | 6 |
| Striking or bumping | 4 |
| Stepping or kneeling on object | 2 |
| Nonpowered haulage | 2 |
Equipment named in accident reports at mines controlled by Minnesota Mining & Manufacturing Company
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 11 |
| Screen | 6 |
| Hand tools (powered) | 3 |
| Forklift | 3 |
| Elevator | 3 |
| Machine | 2 |
| Conveyor | 2 |
| Ore haulage trucks - off highway trucks | 2 |
| Crane | 1 |
| Carriage-mounted drills | 1 |
US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.