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 Little Rock Industrial Mineral Prod · 0300426
50.30(a)
- 3M Little Rock Industrial Mineral Prod · 0300426
50.30(a)
- 3M Little Rock Industrial Mineral Prod · 0300426
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
EE was carrying a 12-foot pipe down to the Line 3 cooler. The EE stated that they misstepped and felt pain in their back.
- 3M CORONA PLANT · 0400191
Verbal Hazard Complaint Inspections · 5.0 on-site hours
- 3M Little Rock Industrial Mineral Prod · 0300426
Spot Inspection · 0.0 on-site hours
- 3M Little Rock Industrial Mineral Prod · 0300426
50.20-1 · $151.00 proposed
- 3M Little Rock Industrial Mineral Prod · 0300426
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
While a production employee was connecting a water hose to a slurry meter some remaining slurry discharged from the slurry meter connection point and splashed into a second production employee's face that was standing nearby. The employee flushed EE's eyes and washed EE's face. Due to eye irritation EE visited the local medical facility and received some medicated eye drops.
- 3M Little Rock Industrial Mineral Prod · 0300426
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
Crushing and Screening employee reported soreness in their right shoulder area after shoveling at 2 elevator tail-pulley. Site nursed managed with first aid and employee visited with ART representative. EE requested to be seen by a physician on 9/9/26.
- 3M Little Rock Industrial Mineral Prod · 0300426
Spot Inspection · 0.0 on-site hours
- 3M CORONA PLANT · 0400191
STRIKING OR BUMPING · DAYS AWAY FROM WORK ONLY
Accident narrative
While cleaning pile in walkway between conveyor and elevator, the employee's left knee made contact with a machine guard on conveyor tail pulley. Upon contact, employee felt pain in left knee and was taken to the ER. Employee was given work restrictions and lost time.
- 3M Pittsboro · 3102153
HOISTING · DAYS AWAY FROM WORK ONLY
Accident narrative
A miner was closing an access door to a bucket elevator when they crushed their left index finger between the door and flange of the door opening. First aid was administered and when the injury did not improve the miner was sent to an occupational clinic on 7/21/2026. The miner was diagnosed with a hairline fracture and was prescribed restrictions and a finger splint.
- 3M Little Rock Industrial Mineral Prod · 0300426
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee reported on Monday, 7/13/26, that on Friday, 7/10/26, they believe they injured their back while opening and closing rail car hatches and assisting with troubleshooting a clogged chute. The employee was advised to seek additional medical attention and subsequently went to clinic, where they received an injection and were placed on work restrictions.
- 3M Pittsboro · 3102153
MACHINERY · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
A miner was bolting a grate on the bottom side using an impact wrench while holding the other side with their other hand. The impact wrench jerked causing their wrist to twist. On 7/23/2026, the injury had not improved and the miner went to an occupational clinic for evaluation where they received restrictions and a wrap for the injured wrist.
- 3M CORONA PLANT · 0400191
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
A mechanic was working on a jam of an elevator flop gate. While attempting to remove the jam, the flop gate shifted under pressure and caught the mechanic's wrist. The mechanic sustained a fracture to the right wrist and possible ligament damage. The mechanic was prescribed medication and lost time.
- 3M CORONA PLANT · 0400191
Compliance Follow-up Inspection · 2.5 on-site hours
- 3M CORONA PLANT · 0400191
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
A miner was working from a ladder while applying a patch to a screener feed box. While reaching, the ladder slid, causing the miner to fall onto the ladder. The miner sustained a laceration to the right knee and a fracture of the right patella. The miner was prescribed medication and lost time.
- 3M Pittsboro · 3102153
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
A miner was lifting bearing parts onto a pallet to be removed from the area when they felt discomfort in their left shoulder. The miner did not report the injury to their supervisor until after they went to see a doctor on 04/24/2026. The miner was diagnosed with a left shoulder strain and received work restrictions.
- 3M Pittsboro · 3102153
Regular Safety and Health Inspection · 19.8 on-site hours
- 3M CORONA PLANT · 0400191
56.14100(b) · $209.00 proposed
- 3M CORONA PLANT · 0400191
56.14132(a) · $209.00 proposed
- 3M CORONA PLANT · 0400191
56.14132(b)(1)(i) · $209.00 proposed
- 3M CORONA PLANT · 0400191
56.14100(b) · $465.00 proposed
- 3M CORONA PLANT · 0400191
56.14207 · $313.00 proposed
- 3M CORONA PLANT · 0400191
56.14207 · $313.00 proposed
- 3M Pittsboro · 3102153
56.12025 · $151.00 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 operator.
Relationships reflect the selected mine status and current MSHA controller/operator fields.