Minnesota Mining & Manufacturing Company safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Hoisting
3M Pittsboro · 3102153Days restricted activity 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.
Handling of materials
3M Little Rock Industrial Mineral Prod · 0300426Days 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.
Machinery
3M Pittsboro · 3102153Days 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.
Handling of materials
3M CORONA PLANT · 0400191Days 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.
Compliance Follow-up Inspection
3M CORONA PLANT · 04001912.5 on-site hours reported
Slip or fall of person
3M CORONA PLANT · 0400191Days 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.
Handling of materials
3M Pittsboro · 3102153Days 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.
Regular Safety and Health Inspection
3M Pittsboro · 310215319.8 on-site hours reported
Safety defects; examination, correction and records.
3M CORONA PLANT · 040019130 CFR 56.14100(b) · $209.00 proposed penalty
Horns and backup alarms.
3M CORONA PLANT · 040019130 CFR 56.14132(a) · $209.00 proposed penalty
Horns and backup alarms.
3M CORONA PLANT · 040019130 CFR 56.14132(b)(1)(i) · $209.00 proposed penalty
Safety defects; examination, correction and records.
3M CORONA PLANT · 040019130 CFR 56.14100(b) · $465.00 proposed penalty
Parking procedures for unattended equipment.
3M CORONA PLANT · 040019130 CFR 56.14207 · $313.00 proposed penalty
Parking procedures for unattended equipment.
3M CORONA PLANT · 040019130 CFR 56.14207 · $313.00 proposed penalty
Grounding circuit enclosures.
3M Pittsboro · 310215330 CFR 56.12025 · $151.00 proposed penalty
Regular Safety and Health Inspection
3M CORONA PLANT · 04001918.0 on-site hours reported
Spot Inspection
3M Pittsboro · 31021530.5 on-site hours reported
Compliance Follow-up Inspection
3M CORONA PLANT · 04001912.0 on-site hours reported
Examination of working places.
3M CORONA PLANT · 040019130 CFR 56.18002(a) · $398.00 proposed penalty
Housekeeping.
3M CORONA PLANT · 040019130 CFR 56.20003(a) · $398.00 proposed penalty
First-aid materials.
3M CORONA PLANT · 040019130 CFR 56.15001 · $398.00 proposed penalty
General requirements.
3M CORONA PLANT · 040019130 CFR 56.4200(b)(2) · $592.00 proposed penalty
Housekeeping.
3M CORONA PLANT · 040019130 CFR 56.20003(a) · $398.00 proposed penalty
103 (g) Written Notification Hazard Complaint Inspectio
3M Little Rock Industrial Mineral Prod · 03004268.0 on-site hours reported
103 (g) Written Notification Hazard Complaint Inspectio
3M CORONA PLANT · 040019110.0 on-site hours reported
Sources and definitions
MSHA Violations (issue date), Accidents (accident date) and Inspections (begin date).
Violation titles use current CFR headings to identify the cited rule; they are not the inspector’s account of what happened.
Status is from the current MSHA Mines snapshot, not the selected reporting period. Closed records can retain their last reported controller/operator.
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.