Coal production
0reported short tons
ACTIVE / CONTROLLER PORTFOLIO
Minnesota Mining & Manufacturing Company
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA CONTROLLER IDM00221
MINE PORTFOLIO
3 of 3 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 |
|---|---|---|---|---|---|---|
| 3M CORONA PLANT0400191 · Active6/8 quarters reported | Riverside, CASurface · MSHA: Crushed, Broken Stone NEC | 0 | 295,710 | 35 | 6 | 95.8 |
| 3M Little Rock Industrial Mineral Prod0300426 · Active6/8 quarters reported | Pulaski, ARSurface · MSHA: Crushed, Broken Granite | 0 | 538,191 | 99 | 12 | 210.8 |
| 3M Pittsboro3102153 · Active6/8 quarters reported | Chatham, NCFacility · MSHA: Crushed, Broken Granite | 0 | 225,518 | 6 | 9 | 81.3 |
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
Portfolio map
3 of 3 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- 3M CORONA PLANT33.84833, -117.51194Open map ↗
- 3M Little Rock Industrial Mineral Prod34.69472, -92.29250Open map ↗
- 3M Pittsboro35.66611, -79.17750Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. All 3 mines listed under this controller were checked; 3 have reports in the available quarters. Totals use current ownership.
Hours worked
1,059,419reported 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 | 173,538 | 0.00 | 351 | 3/3 mines reporting |
| 2025 Q2 | 0 | 194,802 | 0.00 | 333 | 3/3 mines reporting |
| 2025 Q3 | 0 | 189,300 | 0.00 | 363 | 3/3 mines reporting |
| 2025 Q4 | 0 | 129,467 | 0.00 | 277 | 3/3 mines reporting |
| 2026 Q1 | 0 | 182,685 | 0.00 | 358 | 3/3 mines reporting |
| 2026 Q2 | 0 | 189,627 | 0.00 | 351 | 3/3 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
14032 significant & substantial (S&S)
Accident records
270 records classified as fatality
Proposed penalties · USD
174,175.00132 of 140 violations with amounts
On-site inspection hours
387.7529 inspections · 29 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 | 14 | 0 | 2,826.00 | 3 | 0 | 3 | 32.0 |
| 2025-Q2 | 45 | 13 | 37,815.00 | 6 | 0 | 4 | 101.5 |
| 2025-Q3 | 7 | 4 | 6,412.00 | 1 | 0 | 5 | 31.3 |
| 2025-Q4 | 7 | 4 | 11,602.00 | 4 | 0 | 4 | 49.5 |
| 2026-Q1 | 35 | 6 | 69,081.00 | 2 | 0 | 5 | 74.3 |
| 2026-Q2 | 7 | 0 | 1,869.00 | 4 | 0 | 3 | 30.3 |
| 2026-Q3 | 25 | 5 | 44,570.00 | 7 | 0 | 5 | 69.0 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- 3M CORONA PLANT · 0400191
56.20003(a) · S&S · $1,968.00 proposed
- 3M CORONA PLANT · 0400191
56.12032 · S&S · $1,968.00 proposed
- 3M CORONA PLANT · 0400191
56.14112(b) · $267.00 proposed
- 3M Little Rock Industrial Mineral Prod · 0300426
MACHINERY · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
On December 28, 2025, Miner was working on the demolition and removal of an existing dryer. Miner attempted to cut an additional rigging point while load was suspended. Miner accidentally cut the supporting rigging causing the load to shift and strike Miner in the abdomen/chest area resulting in a broken rib and internal bruising.
- 3M Pittsboro · 3102153
Regular Safety and Health Inspection · 22.5 on-site hours
- 3M Pittsboro · 3102153
56.12023 · $267.00 proposed
- 3M CORONA PLANT · 0400191
SLIP OR FALL OF PERSON · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
The employee slipped while descending two steps on the north mezzanine floor in Coloring. During the fall, they lost right-hand grip on the handrail, fell backward, and struck the corner of a toe board with the upper left side of their back. The injury resulted in fracture of the left thoracic 8-9 ribs and a bruised lung.
- 3M Pittsboro · 3102153
POWERED HAULAGE · DAYS AWAY FROM WORK ONLY
Accident narrative
A miner was using a stand-on skid steer to perform housekeeping around a transition point of two outdoor conveyors when they struck their hard hat on the end of a pipe. The miner was taken to the emergency room where they were diagnosed with a head and cervical spine injury and prescribed lost time.
- 3M Pittsboro · 3102153
Spot Inspection · 1.8 on-site hours
- 3M Little Rock Industrial Mineral Prod · 0300426
Spot Inspection · 1.8 on-site hours
- 3M CORONA PLANT · 0400191
Spot Inspection · 4.0 on-site hours
- 3M CORONA PLANT · 0400191
56.15014 · S&S · $2,312.00 proposed
- 3M CORONA PLANT · 0400191
56.20003(a) · S&S · $883.00 proposed
- 3M CORONA PLANT · 0400191
56.20003(a) · S&S · $883.00 proposed
- 3M CORONA PLANT · 0400191
56.14107(a) · $592.00 proposed
- 3M CORONA PLANT · 0400191
56.14107(a) · $267.00 proposed
- 3M CORONA PLANT · 0400191
56.20003(a) · S&S · $883.00 proposed
- 3M CORONA PLANT · 0400191
56.14112(b) · $592.00 proposed
- 3M CORONA PLANT · 0400191
103 (g) Written Notification Hazard Complaint Inspectio · 20.8 on-site hours
- 3M Little Rock Industrial Mineral Prod · 0300426
DISORDERS (REPEATED TRAUMA) · OCCUPATNAL ILLNESS NOT DEG 1-6
Accident narrative
During annual hearing testing the employee experienced a standard threshold shift in the right ear.
- 3M Little Rock Industrial Mineral Prod · 0300426
103 (g) Written Notification Hazard Complaint Inspectio · 3.0 on-site hours
- 3M Little Rock Industrial Mineral Prod · 0300426
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Employee strained shoulder while doing rotex screen change
- 3M Little Rock Industrial Mineral Prod · 0300426
Compliance Follow-up Inspection · 0.8 on-site hours
- 3M Little Rock Industrial Mineral Prod · 0300426
56.14112(b) · S&S · $2,712.00 proposed
- 3M Pittsboro · 3102153
SLIP OR FALL OF PERSON · DYS AWY FRM WRK & RESTRCTD ACT
Accident narrative
A miner was performing housekeeping duties by sweeping material between two conveyors into an access hole to a bin. As they backed up and turned to get more material, they stepped into the access hole with their left foot causing their right ankle to bend. The miner was seen at a clinic and given a walking boot and restrictions.
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 operator.
Relationships reflect the selected mine status and current MSHA controller/operator fields.